EP2769755A1 - Front unit with automatic triggering when twisted - Google Patents

Abstract

The toepiece (10) has a mobile part (12) mounted on a fixed part (11) for relative movement with a transverse component. Jaws (13d, 13g) are mounted on the mobile part to pivot about a longitudinal axis. A lever (16) is actuable from outside of the toepiece, and achieves a blocking position in which blocking elements prevent tilting of the jaws to keep the toepiece in a closed configuration. Protrusion and hollow cooperate with the elements such that the movement beyond a preset travel allows the lever to pass automatically to a freeing position in which the elements allow the jaws to tilt. An independent claim is also included for a binding device for securing a boot to a gliding board.

Description

The invention relates to a stop of a device for attaching a boot to a gliding board. This stop is particularly suitable for ski touring. It also relates to a device for attaching a boot to a gliding board and a gliding board as such equipped with such a fixing device and / or such a stop.

The document EP-A1-2353673 describes a stop of a fastening device of a boot on a ski touring. The front binding of the boot rests on two jaws of the abutment hinged along longitudinal axes of pivoting relative to a base of the abutment intended to be fixed on the ski touring. Each jaw comprises retaining elements intended to cooperate with the ski touring boot. The two jaws are articulated by a spring system to occupy a first so-called stable closed position in which the retaining elements cooperate with corresponding hollow portions arranged laterally in the front part of the ski touring boot, in order to fix the shoe allowing only its rotational movement about an axis transverse to the ski, and a second so-called open stable position in which the jaws are spaced apart so that the retaining elements release the shoe that can be separated from the ski touring. Fixing the front part of the boot on a ski touring equipped with such a stop is achieved by positioning the shoe while the two jaws occupy the second open position, then pressing strongly with the sole of the shoe on the system spring-based which allows the passage of articulated jaws to their first closed position in which they are closer to the shoe to position the retaining elements within complementary hollow portions of the shoe.

A disadvantage of such existing stops is their lack of safety in the case of a fall of the skier, particularly in the case of a fall in torsion of the skier in a situation of downhill type alpine skiing, involving a twisting movement of the skier. shoe relative to the ski during which the shoe remains trapped in the abutment, which may induce injury of the skier.

One known way to automatically release the hiking shoe to avoid injury to the skier is to provide a heel associated with such existing stops, for fixing the rear portion of the hiking shoe, configured to release the shoe in the event of a fall, in particular in torsion but also in fall before and / or in fall back. However, such heels are complex, resulting in high cost and heavy weight, and do not meet the safety requirements imposed by the Alpine standard ISO9462. This limits the safety given to the touring skier.

The document EP-B1-1393783 describes another type of abutment comprising jaws also articulated along longitudinal axes on a movable part transversely. The jaws are in contact with a rocker which prevents tilting of the jaws as the displacement stroke of the moving part is less than a given stroke. Then, the jaws rock and release the shoe. However, this solution is complex, cumbersome and cumbersome because of the existence of the rocker.

The document EP-A1-2431080 discloses a stop having a fixed portion and a rotatable portion about a vertical axis. The movable part comprises two jaws classically associated by a lever toggle mechanism, integral with the movable part. Lever varies selectively between a low position placing the stopper in an open position where the jaws are spaced apart to allow the boot of the shoe in the stop, a semi-high position in which the jaws are brought together to place the stopper in a closed position adapted for use in downhill and a high position in which locking elements integral with the lever are in contact with a cam surface secured to the fixed part to block any possibility of return of the lever to the semi-high position and to the low position, which makes it possible to inhibit any triggering of the jaws and freezes the stop in a walking position. In the closed position of the stop, occupied in the semi-high position of the lever, the movable part can pivot on a limited predetermined angular stroke, this pivoting being in opposition to the action of a return spring of the moving part. towards a centered position. In the operating position of the stop, occupied in the high position of the lever, the lever is placed between lateral wings integral with the fixed part, which prohibits the pivoting movement of the movable part relative to the fixed part. In case of a fall, there is initially a release of the heel at the level of the heel. This allows an overall movement of the shoe. During this movement, the boot rotates the moving part relative to the fixed part, until it comes into abutment at the end of its predetermined course. There is then a sudden stop of the moving part. In a second step, the extension of the movement of the shoe due to the fall, while the moving part is in angular abutment, causes a push on one of the jaws which causes the opening of the jaws and the passage of the lever towards his low position, freeing the shoe. Thus, the trigger occurs in two stages: in the first phase, during the rotation of the movable part, the jaws are locked in the closed position and hold the boot in the stop, while in the second time that starts at the entrance in angular stop of the part mobile, the jaws begin to open under the action of the shoe and place the lever in the down position. However, this solution is still complex, cumbersome and cumbersome. The security conferred is unsatisfactory because the trigger requires a very important angular movement of the shoe.

The object of the present invention is to provide a solution for attaching a boot to a gliding board that overcomes the disadvantages listed above.

In particular, a first object of the present invention is to provide a solution for attaching a shoe that is simple, compact, economical and lightweight.

A second object of the present invention is to provide a solution for attaching a boot ensuring optimum safety to the skier in case of a fall and limiting as much as possible the risk of damage to equipment.

In particular, the invention aims to provide an abutment for triggering torsion associated with a heel gear configured to ensure a trigger only in front fall.

The present abutment is intended in particular to respect both the ISO13992 hiking standard and the ISO9462 alpine standard.

These objects can be achieved by means of a stop for a device for attaching a boot to a gliding board, comprising a fixed part intended to be fixed on the gliding board, a movable part mounted on the fixed part with a possibility of relative displacement having at least one transverse component and on which two jaws are mounted to pivot about a substantially longitudinal axis, the stop comprising a lever operable from outside the stop and occupying a locking position in which locking elements integral with the lever prohibit tilting of the jaws to maintain the stop in a closure configuration where the jaws retain the shoe, the stop comprising trigger elements cooperating with the locking elements in such a way that the implementation of said movement of the moving part relative to the fixed part beyond a predetermined stroke causes the automatic passage of the lever, particularly from the locking position, to a release position separate from the locking position and in which the locking elements allow a tilting of the jaws.

• les mâchoires soient mobiles en rotation sur une embase mobile de la partie mobile, dont le déplacement transversal se pratique à l'encontre d'une force d'un premier ressort de rappel, rappelant la partie mobile vers une position de repos,
• les éléments de blocage occupent une première position dans laquelle ils bloquent le pivotement des mâchoires sous l'effet d'un deuxième ressort de rappel distinct du premier ressort de rappel,
• et les éléments déclencheurs coopèrent avec les éléments de blocage d'une manière telle que la mise en oeuvre dudit déplacement transversal au-delà d'une course prédéterminée provoque le passage automatique des éléments de blocage, en s'opposant à l'action du deuxième ressort de rappel, de la première position vers une deuxième position dans laquelle les éléments de blocage autorisent un basculement des mâchoires pour permettre l'ouverture des mâchoires et libérer la chaussure.

In this context, it may be advantageous to provide that:

• the jaws are rotatable on a movable base of the movable part, the transverse displacement is practiced against a force of a first return spring, reminding the moving part to a rest position,
• the locking elements occupy a first position in which they block the pivoting of the jaws under the effect of a second return spring distinct from the first return spring,
• and the trigger elements cooperate with the locking elements in such a way that the implementation of said transverse displacement beyond a predetermined stroke causes the automatic passage of the locking elements, opposing the action of the second return spring, from the first position to a second position in which the locking elements allow tilting of the jaws to allow the opening of the jaws and release the shoe.

Preferably, the mounting system of the mobile part on the fixed part is such that the sliding movement of the movable part relative to the fixed part is carried out in a rectilinear trajectory, in particular substantially oriented in the transverse direction, or in a curvilinear trajectory with at least one component mainly in the transverse direction, in particular substantially or exactly circular delimiting a portion of a circle whose center is intended to be located near the heel of the shoe.

The mounting system of the movable part on the fixed part may comprise slide-type guiding elements ensuring sliding installation by translation of a mobile base of the movable part on a fixed base of the fixed part. Alternatively, the mounting system of the movable part on the fixed part may comprise two rods parallel to each other arranged in the manner of a deformable parallelogram providing a circularly translational mounting of a mobile base of the movable part on a fixed base of the fixed part.

The locking elements may in particular be mounted in an articulated manner, in particular with respect to rotation, relative to the movable part to vary between a first position occupied in the locking position of the lever and in which they block the jaws and the stop in its configuration. closing, and a second position distinct from the first position, occupied in the release position of the lever and in which they allow tilting of the jaws and the trigger elements can cooperate with the elements of such a way that the implementation of said moving the movable portion relative to the fixed portion beyond the predetermined stroke causes the automatic transition of the locking elements from their first position to their second position.

The lever can be hingedly mounted on the movable part.

The stop may comprise a toggle mechanism provided with a release / release spring biasing the lever and configured so that the locking position and the release position are stable positions at the ends of a total lever tilting stroke in which is included an unstable intermediate position of the lever corresponding to a hard point of kink of the toggle.

Preferably, the trigger elements may comprise first and second bearing surfaces respectively secured to the movable and fixed parts, in contact with one another by undergoing relative sliding on one another during the implementation. said displacement of the movable portion, the first and second bearing surfaces being shaped so that this relative sliding causes the passage of the lever from its locking position to its release position.

The first bearing surface can be carried by the blocking elements integral with the lever.

One of the first and second bearing surfaces is preferably constituted by a lug and the other of the first and second bearing surfaces by a recess in which the lug penetrates prior to said displacement of the movable part and conformed so that the lug comes progressively outside the hollow during the relative sliding of the first and second bearing surfaces in a manner creating the passage of the lever from its locking position to its release position.

The hollow may be integral with the lever and the lug is secured to the fixed part, but a reverse arrangement may be provided.

The stop may include a foot pedal secured to the lever and the recess can be formed in the foot pedal.

The stop may comprise at least one trigger spring interposed between the fixed and movable parts and biasing the movable part in a determined rest position relative to the fixed part.

The stop may comprise a means for adjusting the stiffness of the trigger spring.

The locking elements may be biased by a return spring independent of the release spring, and biasing the locking elements to a position, in particular said first position, in which they prohibit the pivoting of the jaws and block the stop in its closed configuration .

The stop may comprise resilient elements urging the jaws in a tilting movement tending to place the stopper in a footwear configuration.

It can be ensured that in the boot configuration, the angular position occupied by the jaws is an intermediate position between the angular positions occupied in the closure and tripping configurations of the stop.

The locking elements may be constituted by lateral flanks of the lever which, in the lever locking position, bear against support surfaces secured to the jaws, in particular on their internal face.

• des mâchoires mobiles en rotation sur une embase mobile de la partie mobile, dont le déplacement transversal se pratique à l'encontre d'une force d'un premier ressort de rappel, rappelant la partie mobile vers une position de repos,
• des éléments de blocage qui occupent une première position dans laquelle ils bloquent le pivotement des mâchoires sous l'effet d'un deuxième ressort de rappel distinct du premier ressort de rappel,
• et des éléments déclencheurs coopérant avec les éléments de blocage d'une manière telle que la mise en oeuvre dudit déplacement transversal au-delà d'une course prédéterminée provoque le passage automatique des éléments de blocage, en s'opposant à l'action du deuxième ressort de rappel, de la première position vers une deuxième position dans laquelle les éléments de blocage autorisent un basculement des mâchoires pour permettre l'ouverture des mâchoires et libérer la chaussure.

These objects can also be achieved by a stop for a device for attaching a boot to a gliding board, comprising a fixed part intended to be fixed on the gliding board, a movable part mounted on the fixed part with a possibility of displacement. relative having at least one transverse component, the abutment comprising:

• jaws movable in rotation on a movable base of the movable part, the transverse displacement is practiced against a force of a first return spring, reminding the moving part to a rest position,
• locking elements which occupy a first position in which they block the pivoting of the jaws under the effect of a second return spring distinct from the first return spring,
• and trigger elements cooperating with the locking elements in such a manner that the implementation of said transverse displacement beyond a predetermined stroke causes the automatic passage of the locking elements, opposing the action of the second return spring, from the first position to a second position in which the locking elements allow tilting of the jaws to allow the opening of the jaws and release the shoe.

The mounting system of the mobile part on the fixed part may be such that the sliding movement of the movable part relative to the fixed part is practiced in a rectilinear trajectory, in particular substantially oriented in the transverse direction, or in a curvilinear trajectory with at least one component mainly in the transverse direction, in particular substantially or exactly circular delimiting a portion of a circle whose center is intended to be located near the heel of the shoe.

The locking elements may be mounted in an articulated manner, in particular with respect to rotation, with respect to the mobile part so that the passage of the locking elements from the first position to the second position and vice versa is practiced by a displacement of the blocking elements by pivoting relative to the movable portion along an axis directed in the transverse direction.

The trigger elements may comprise first and second bearing surfaces respectively secured to the movable and fixed parts, in contact with one another by undergoing relative sliding on one another during the implementation of said displacement of the movable part, the first and second bearing surfaces being shaped so that this relative sliding causes the passage of the locking elements from their first position to their second position.

A device for attaching a boot to a gliding board may comprise, on the one hand, such an abutment intended to secure a front part of the boot, and on the other hand a heel piece intended to secure the binding of a boot. a rear part of the boot on the gliding board, the heelpiece being configured to release the boot only in the event of a skier's front fall, the release of the boot from the fastening device in the event of a fall in torsion being realized only by the stop.

Finally, a gliding board, particularly ski touring, may include such a stop and / or such a fastening device.

• les figures 1 à 9 illustrent un premier mode de réalisation d'une butée selon l'invention dans une configuration de fermeture,
• les figures 10 à 13 illustrent la butée des figures précédentes dans une configuration de chaussage,
• les figures 14 à 16 illustrent la butée des figures précédentes durant le passage de la configuration de fermeture vers une configuration de déclenchement en torsion,
• les figures 17 à 19 illustrent la butée des figures précédentes dans la configuration de déclenchement en torsion,
• les figures 20 à 23 illustrent un deuxième mode de réalisation d'une butée selon l'invention, dans sa configuration de fermeture,
• les figures 24 et 25 illustrent la butée des figures 20 à 23 dans sa configuration de chaussage,
• les figures 26 à 28 représentent le système de montage de la partie mobile sur la partie fixe de la butée selon le deuxième mode de réalisation,
• et la figure 29 représente le système de déclenchement interposé entre les parties mobile et fixe de la butée selon le deuxième mode de réalisation.

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 to 9 illustrate a first embodiment of an abutment according to the invention in a closure configuration,
• the Figures 10 to 13 illustrate the abutment of the preceding figures in a boot configuration,
• the Figures 14 to 16 illustrate the abutment of the preceding figures during the transition from the closure configuration to a torsional release configuration,
• the Figures 17 to 19 illustrate the abutment of the preceding figures in the torsional release configuration,
• the Figures 20 to 23 illustrate a second embodiment of an abutment according to the invention, in its closure configuration,
• the Figures 24 and 25 illustrate the stop Figures 20 to 23 in its boot configuration,
• the Figures 26 to 28 represent the mounting system of the moving part on the fixed part of the abutment according to the second embodiment,
• and the figure 29 represents the trigger system interposed between the movable and fixed portions of the stop according to the second embodiment.

The following description relates to an abutment 10 of a device for attaching a boot to a gliding board (not shown). This stop 10 ensures the attachment of the front part of the shoe and is particularly suitable for the practice of ski touring, but does not exclude use in the context of alpine skiing and / or cross-country skiing. More generally, the abutment 10 participates in the constitution of the fastening device of the boot on the gliding board, in combination with a rear heel (not shown) ensuring the attachment of the rear part of the shoe. The Figures 1 to 19 illustrate a first embodiment of such a stop. Figures 20 to 29 illustrate a second embodiment of such a stop 10. For reasons of simplification, the numerical references are preserved from one embodiment to another for the functional elements having the same function in the two embodiments.

To facilitate the understanding of the following description, an orthonormal reference is associated with the stop 10, the longitudinal direction X of the stop 10 being the horizontal direction oriented from the rear to the front of the stop 10. Its transverse direction Y corresponds to the horizontal direction perpendicular to the X direction and oriented from the right to the left of the stop 10. The vertical direction Z is perpendicular to the horizontal plane defined by the X and Y directions and is directed towards the top of the stop .

By "stop", it should be understood that this is the front part of the fastening device of the boot on the gliding board, this front part cooperating with the front zone of the boot to ensure its retention, that this is or not with a possibility of angular pivoting of the shoe around an axis directed in the transverse direction.

The stop, which therefore belongs to the attachment device of the boot on the gliding board, comprises a fixed part 11 intended to be fixed on the gliding board (for example by means of fixing screws 15), a part mobile 12 mounted on the fixed part 11 with a possibility of relative displacement having at least one transverse component. It may especially be a possibility of sliding movement or translation of the movable portion 12 relative to the fixed portion 11 in a rectilinear path (marked "T" on the figure 2 ), in particular substantially oriented in the Y direction, or along a curvilinear path (marked "C" on the figure 21 ) with at least one component mainly in the direction Y. In particular, it may be a substantially or exactly circular path defining a portion of a circle whose center is intended to be located near the heel of the shoe. In each of the first and second embodiments, the mounting system of the movable portion 12 on the fixed portion 11 is configured to allow these movements of movements of the movable portion 12 along the trajectories T or C. It is well understood here that the nature of these displacement possibilities is different from a circular pivoting movement.

In the first embodiment, to constitute the mounting system of the mobile part 12 on the fixed part 11, a mobile base 26 of the movable part 12 is slidably mounted relative to a fixed base 27 of the fixed part 11 by intermediate slide-type guiding elements providing a translational possibility, for example rectilinear shape, directed transversely. These guide elements may be in the form of complementary shaped elements carried by the fixed and mobile bases respectively.

The figures 7 , 16 and 19 are cross-sectional views of the abutment 10 along a cutting plane AA oriented in the directions Y, Z, passing through the two jaws 13d, 13g and visible on the figure 6 which is a left side view (along Y) of the stop 10. The figure 8 is a sectional view of the abutment 10 according to a sectional plane BB oriented in the directions Y, Z passing through a trigger spring 14 evoked further and visible on the figures 4 and 9 which are respectively top views along Z of the abutment 10 and bottom Z along the fixed part 11.

The abutment 10 comprises two rigid jaws 13d, 13g, respectively left and right, offset in the Y direction relative to each other. As the abutment 10 is generally symmetrical on either side of a median plane of symmetry (X, Z), indices "d" and "g" are affixed to the references of certain elements respectively of the right part and the part left of the abutment 10. The jaws 13g, 13d comprise retaining elements 20d, 20g for securing the boot when the stop is in a closed configuration detailed below. These retaining elements 20d, 20g are for example in the form of pins intended to engage in lateral openings in the shoe. The jaws are mounted to pivot about substantially horizontal axes Ad, Ag respectively (see figure 2 ) oriented substantially in the longitudinal direction X of the abutment 10. Each of the jaws 13d, 13g is included in the plane of its displacement by tilting, the planes of movement of the two jaws 13d, 13g being further merged into a single oriented plane, in particular in the directions Y and Z. The pivot axis Ad, Ag of each of the jaws 13d, 13g is fixed in a frame linked to the movable portion 12 of the abutment 10, so that the pivot axes of the jaws are movable relative to the gliding board in the same way as the movable part 12, in particular in the directions Y and possibly Z and / or X. Each pivot axis Ad, Ag may be parallel to the longitudinal direction X or included in a plane (X, Z) at an angle of plus or minus 10 degrees to the horizontal. Each axis Ad, Ag can notably be advantageously inclined downwards along Z in going towards the rear of the abutment 10 along X, in order to favor the exit of the boot after the release explained later in a triggering configuration. in detailed torsion further.

As a result, each jaw 13d, 13g can swing, in its plane of displacement, on a total angular stroke respectively marked αd, αg on the figure 16 , between a closed position (for example illustrated on the figure 7 for each of the two jaws 13d, 13g) corresponding to a position of the jaw as close as possible to the other jaw on this total angular stroke, and an open position (for example illustrated on the figures 19 and 16 for each of the two jaws 13d, 13g) corresponding to a position of the jaw spaced as far as possible from the other jaw on this total angular stroke. The two jaws 13d, 13g are independent so that each of the jaws can adopt its open or closed position independently of the position adopted by the other jaw. The passage from one position to the other is achieved by a tilting of the jaw 13g, 13d around its pivot axis Ag, Ad over the entire angular stroke which is advantageously greater than 30 degrees, especially greater than 40 degrees, to provide an opportunity for triggering torsion of the shoe in case of high transverse forces applied by the shoe on at least one of the jaws, especially in the event of a fall involving a twisting movement of the shoe, to allow the release of the shoe on the left or right side of the stop 10.

• une position de blocage (figure 3), ou verrouillage, dans laquelle il interdit un basculement des mâchoires 13d, 13g autour des axes Ad, Ag pour maintenir la butée 10 dans la configuration de fermeture (figures 1 à 9) dans laquelle les mâchoires 13d, 13g sont en position de fermeture et retiennent la chaussure grâce aux éléments de retenue 20d, 20g,
• et une position de libération (figure 12), ou déverrouillage, dans laquelle le levier 16 et les éléments de retenue 20d, 20g sont dégagés de la chaussure afin d'autoriser un basculement des mâchoires 13d, 13g vers la position d'ouverture autour des axes Ad, Ag.

The stop 10 comprises a lever 16 operable manually or with a stick, from the outside of the abutment 10, between:

• a blocking position ( figure 3 ), or locking, in which it prohibits a tilting of the jaws 13d, 13g around the axes Ad, Ag to maintain the stop 10 in the closed configuration ( Figures 1 to 9 ) in which the jaws 13d, 13g are in the closed position and retain the boot thanks to the retaining elements 20d, 20g,
• and a release position ( figure 12 ), or unlocking, in which the lever 16 and the retaining elements 20d, 20g are disengaged from the boot in order to allow tilting of the jaws 13d, 13g towards the open position about the axes Ad, Ag.

In the locked position occupied by the lever 16 on the Figures 1 to 9 and on figures 14 and 15 , the lever 16 prohibits the tilting movement of the two jaws 13d, 13g to their open positions and on the contrary blocks them in their closed positions. On the other hand, when he is in a position of liberation, which is the case Figures 10 to 13 after a voluntary action of the user at an actuating element 17 detailed below or after an automatic action via triggering elements after a sufficient movement of the movable portion 12 relative to the fixed part, the lever 16 allows the passage of the two jaws 13d, 13g from their closed positions to their open positions, and vice versa.

Each jaw 13d, 13g comprises for this purpose a bearing surface, respectively 18d, 18g, located in the lower part of the corresponding jaw, in particular below the axis of pivot Ad, Ag corresponding to this jaw and on their faces. internal. These bearing spans are visible on the figure 7 , are facing in the transverse direction and are intended to cooperate by contact with integral blocking elements of the lever 16. The locking elements are for example formed respectively by two lateral flanks 25d, 25g, for example formed in the lever 16 being delimited by the lever 16 itself. The locking elements and the bearing surfaces are shaped in such a way that the bearing surfaces 18d, 18g are in contact against the sides 25d, 25g of the lever 16 when it occupies the locking position in order to prohibit the tilting of the jaws 13d, 13g to the open position. This is the situation represented on the figures 7 and 23 . On the other hand, the contact between the bearing surfaces 18d, 18g and the lateral flanks 25d, 25g of the lever 16 constituting the blocking elements integral with the lever 16 is eliminated when the lever 16 occupies its release position, which makes it possible to allow tilting of each jaw 13d, 13g from the closed position to the open position or reciprocally from the open position to the closed position. These bearing surfaces 18d, 18g may be substantially vertical, and advantageously have a slight transverse inclination along Y towards the outside of the abutment 10 while going upwards along Z. The angle of inclination between the bearing surface 18d, 18g and the vertical direction Z can be of the order of 5 degrees. This makes it possible to reduce the mechanical friction between the lateral flanks 25d, 25g of the lever 16 and the bearing surfaces 18d, 18g of the jaws during the passage of the lever 16 towards its release position. This also allows to automatically adjust the vertical position occupied by the lever 16 when in its locked position, depending on the height and / or the actual width of the sole of the shoe.

The nature of the blocking elements may, however, be different from that mentioned above, since the blocking function described is fulfilled, in particular as a function of the nature of the mounting of the jaws on the mobile part 12.

In both embodiments, the locking elements 25d, 25g are said to be integral with the lever 16 in that they are integral with the rest of the lever so as to form a monoblock lever or they are mounted on the lever. 16 fixedly or with a possible possibility of movement relative to the rest of the lever 16, for example by articulation, as required.

The stop 10 comprises trigger elements, detailed below, cooperating with the blocking elements, that is to say here the lateral flanks 25d, 25g, in such a way that the implementation of the at least transverse displacement of the movable portion 12 relative to the fixed portion 11 beyond a predetermined stroke causes the automatic passage of the lever 16 to the release position. In other words, the implementation of the displacement of the movable portion 12 relative to the fixed portion 11 beyond this predetermined stroke, this displacement resulting from the application of torsional triggering forces by the shoe on at least l one of the jaws 13d, 13g has the effect of causing the passage of the lever 16 from its locking position to its release position. By against this, below this predetermined stroke, the lever 16 remains in its locking position and keeps the jaws 13d, 13g in their closed positions which continue to retain the front portion of the shoe. The predetermined stroke is in particular between 5 and 15 mm, and is notably substantially equal to about 10 mm.

In addition, the abutment 10 is configured so that the tilting of at least one of the jaws 13d, 13g, this tilting being authorized by the locking elements in the release position of the lever 16 which is automatically occupied as a result of the displacement at least transverse of the movable portion 12, causes the passage of the stop 10 to the so-called torsional release configuration. In this torsional release configuration, the abutment is such that the boot is released from the jaws 13d, 13g, under the effect of the application of torsional release forces by the boot on said jaw 13d, 13g. In other words, a tilting of at least one of the jaws 13d, 13g consecutive to the displacement of the movable portion 12 relative to the fixed portion 11 beyond the predetermined stroke allows the passage of the stop 10 of the configuration of closing towards the torsional release configuration, automatically releasing the shoe from the jaws in the event of application of torsional triggering forces by the shoe on at least one of the jaws. The position adopted by said at least one jaw having tilted in the trigger configuration corresponds to the opening position defined above.

Furthermore, a tilting of the jaws 13d, 13g consecutive to a voluntary actuation of the lever 16 by the user from its blocking position to its release position, by manual application of forces by the latter at the level of the element of actuation 17 of the lever 16, allows the passage of the stopper 10 of the closure configuration to a so-called boot configuration allowing placement of the shoe between the jaws 13d, 13g. The position adopted by the jaws in the boot configuration may be the open position or an intermediate angular position between the opening and closing end positions defined above. Thus, in the boot configuration, the angular position occupied by the jaws can therefore be an intermediate position between the angular positions occupied in the closing and tripping configurations of the abutment 10, avoiding the need to move the jaws beyond the needs for the establishment of the shoe between them.

• soit au moyen d'une application volontaire de la part de l'utilisateur d'efforts sur le levier 16 au niveau de l'élément d'actionnement 17, afin de placer la butée 10 dans la configuration de chaussage pour laquelle aucun déplacement de la partie mobile 12 n'est nécessaire (il s'agit alors de la configuration représentée sur les figures 10 à 13),
• soit lorsque la partie mobile 12 est déplacée le long de la trajectoire T sur une course supérieure à la course prédéterminée précédemment évoquée par rapport à la partie fixe 11, sous l'effet de l'application par la chaussure d'efforts transversaux sur au moins l'une des mâchoires durant une chute impliquant une torsion de la chaussure : la butée 10 est alors automatiquement mise dans la configuration de déclenchement en torsion, de la manière représentée sur les figures 17 à 19.

In other words, when the lever 16 is in the locking position as illustrated at least on the Figures 1 to 9 in order to lock the abutment 10 in its closed configuration, it can then be placed in its release position:

• either by means of a voluntary application by the user of efforts on the lever 16 at the level of the actuating element 17, in order to place the abutment 10 in the footwear configuration for which no displacement of the mobile part 12 is necessary (it is then the configuration represented on the Figures 10 to 13 )
• either when the mobile part 12 is moved along the path T on a stroke greater than the predetermined stroke previously mentioned relative to the fixed part 11, under the effect of the application by the shoe of transverse forces on at least one of the jaws during a fall involving a twisting of the boot: the stop 10 is then automatically put in the torsional release configuration, as shown on the Figures 17 to 19 .

The figures 14 and 15 represent the stop 10 during the transition to the torsional release configuration before the lever 16 has released the jaws 13d, 13g and therefore before they have begun to tilt, while the figure 16 represents the stop 10 during the transition to the torsional release configuration when the lever 16 began to release the jaws 13d, 13g and thus when they began to tilt, but before the lever 16 has reached its position of liberation.

Specifically, the closure configuration of the stop 10 corresponds to a state thereof in which each of the two jaws 13d, 13g is placed in its closed position.

Thus, the torsional release configuration is automatically occupied in the event of a fall in torsion, whether of pure torsion type or not, that is to say possibly combined with the fall before and / or the the skier's fall.

The foregoing description of the torsional release configuration shall be interpreted as implying that the angular tilting of at least one jaw 13d, 13g between the closure configuration and the torsional release configuration of the abutment 10 is such that the boot can escape from the space between the jaws 13d, 13g by a movement of the shoe having at least one component in the transverse direction Y, possibly associated with a vertical component according to Z directed upwards. This angular tilting stroke may advantageously be greater than about 30 degrees, in particular greater than 45 degrees, for example substantially equal to 55 degrees, so that in the torsional release configuration, the shoe can escape freely from the space between the jaws 13d, 13g by a substantially horizontal movement of the boot along the longitudinal X and transverse Y directions, passing over at least one jaw 13d, 13g, in particular over the tilted jaw in the open position under the effect of torsional forces of torsion by the shoe after the passage of the lever 16 to the release position caused automatically by the displacement of the movable portion 12 relative to the fixed portion 11.

• d'un effet de gravité appliqué aux mâchoires pour le passage vers la configuration de déclenchement de torsion ou vers la configuration de chaussage,
• et/ou de l'effet des efforts transversaux appliqués par la chaussure durant un déplacement transversal de celle-ci pour le passage vers la configuration de déclenchement de torsion,
• et/ou de l'effet des efforts transversaux appliqués par la chaussure durant un déplacement vertical de celle-ci pour le passage vers la configuration de chaussage.

The abutment 10 may comprise, in each of its first and second embodiments, resilient elements (not shown) urging the jaws 13d, 13g in a tilting movement tending to place the abutment 10 in the footwear configuration. Each elastic element may in particular take the form of a torsion spring urging the jaws 13d, 13g in a tilting movement tending to move them away from the closure configuration of the abutment 10. In other words, each elastic element associated with a given jaw tends to urge this jaw in a tilting movement in a pivoting direction from the closed position to the jaw opening position. However, these provisions are only optional in the sense that such an elastic element can be absent. The abutment 10 can in fact be configured so that the passage of each jaw from its closed position to its open position can result:

• a gravity effect applied to the jaws for passage to the torsion trigger configuration or to the boot configuration,
• and / or the effect of the transverse forces applied by the boot during a transverse displacement thereof for passage to the torsion-triggering configuration,
• and / or the effect of the transverse forces applied by the boot during a vertical displacement thereof for the passage to the boot configuration.

In the latter variants, the lever 16 opposes any tilting of the jaws 13d, 13g towards their open positions likely to appear under the effect of gravity and / or under the effect of transverse forces applied by the shoe during its vertical movement during the boot of the boot in the abutment and / or under the effect of transverse forces applied by the boot during the transverse displacement of the movable part 12 during a fall in torsion and / or under the effect of elastic elements mentioned above. This locking action of the lever 16 is performed by its blocking elements constituted here by the lateral flanks 25d, 25g which bear against the bearing surfaces 18d, 18g, as the lever 16 is in the locking position. The lever 16 then authorizes this tilting of the jaws under the effect of these different types of forces as soon as it comes to occupy the release position accompanied by the separation of the contact between the bearing surfaces 18d, 18g and the elements blocking integral with the lever 16.

The lever 16 is hingedly mounted on the movable part 12 and is for example articulated in front of the jaws 13d, 13g in the longitudinal direction X and is configured so as to vary position by a tilting movement about an axis of pivoting marked "D", for example oriented parallel to the transverse direction Y. However, it remains conceivable that the lever 16 is mounted, particularly in an articulated manner, on the fixed part of the abutment 10.

The lever 16 may include a foot pedal 19, a rear side with respect to the axis D, configured to form a support for the shoe in the vertical direction Z such that a displacement of the shoe directed downwards direction of the fixed part 11 and therefore in the direction of the gliding board in the vertical direction Z, in particular during the boot of the shoe in the retaining elements 20d, 20g integral with the jaws, causes a tilting of the lever 16 to the position in which it holds the abutment 10 in its closed configuration due to its locking action of the jaws 13d, 13g in their closed positions at their bearing surfaces 18d, 18g thanks to the locking elements formed in this example by the side flanks 25d, 25g of the lever. This tilting movement of the lever 16 towards the locking position automatically causes the return of each jaw towards its closed position. In other words, the blocking elements 25d, 25g are constituted by lateral flanks of the lever 16 which, in the locking position of the lever 16, bear against bearing surfaces 18d, 18g integral with the jaws 13d, 13g, in particular on their inner side.

The foot pedal 19 is furthermore configured so as to form a support along Z such that a tilting of the lever 16 towards its release position resulting from the passage of the abutment 10 from the closure configuration to the torsional release configuration causes a lifting of the boot by the foot pedal 19 in the vertical direction Z upwards in a direction opposite to the gliding board in order to facilitate the interruption of the cooperation between the boot and the retainers 20d, 20g worn by the jaws 13d, 13g. The bearing surface 18d, 18g carried by any jaw which tilts during the passage towards the torsion release configuration under the effect of the transverse forces applied by the boot on this jaw during a transverse displacement of the boot and the moving part 12 participates, because of its contact with the lever 16, the tilting of the lever 16 to its release position.

On the other hand, the lever 16 comprises the aforementioned actuating element 17, arranged on a front side with respect to the axis D and intended to allow the application on the lever 16 of forces mainly oriented according to the direction Z. It is manual or applied by means of a stick. The arrangement of the actuating element 17 is such that the application of these forces causes the lever 16 to tilt towards the release position in which it allows the stop 10 to pass to its boot configuration and thus the tilting jaws 13d, 13g towards their open positions, in particular the passage of the jaws 13d, 13g towards their intermediate position between the angular positions occupied in the closing and tripping configurations of the abutment 10.

In general, the trigger elements comprise first and second bearing surfaces respectively integral with the movable part 12 and the fixed part 11. The first and second bearing surfaces are in contact with one another and undergo a relative sliding on one another during the implementation of the displacement of the movable portion 12 from its rest position along the trajectory T when transverse forces are applied by the shoe on a jaw during a transverse displacement of the shoe during a fall of the skier involving a twisting of the shoe. The first and second bearing surfaces are shaped so that this relative sliding causes the passage of the lever 16 from its locking position to its release position.

In the illustrated embodiment which has the advantage of its simplicity, one of the first and second bearing surfaces is constituted by a lug 21 and the other of the first and second bearing surfaces is constituted by a hollow 22 in which penetrates the lug 21 prior to the displacement of the movable part 12 from its rest position and shaped so that the lug 21 comes gradually outside the hollow 22 during the relative sliding of the first and second bearing surfaces in a manner creating the passage of the lever 16 from its locking position to its release position.

In the two illustrated embodiments where the lever 16 is secured to the movable portion 12, the recess 22 is secured to the lever 16, in particular by being formed in the foot pedal 19 itself secured to the lever 16 in the case of the first embodiment, while the lug 21 is secured to the fixed part 11.

These provisions are visible on the figures 7 , 16 and 19 . On the figure 7 , the lug 21 enters the recess 22 when the displacement of the movable part 12 has not yet taken place, that is to say as long as the abutment 10 is in its closed configuration and in its fitting configuration . The hollow 22 and the lug 21 are shaped so that the lug 21 is gradually outside the recess 22 during the relative sliding of the lug 21 relative to the recess 22 in a manner creating the passage of the lever 16 from its blocking position to its position of release. On the figure 16 , the lug 21 has already slid relative to the recess 22 and is very close to its peripheral edge. The lever 16 has not yet tilted towards its release position, it has just undergone a tilting around the axis D resulting from the lifting effect applied by the lug 21. On the other hand, on the figure 19 , the lug 21 has come to the outside of the recess 22 by crossing the peripheral edge of the recess 22, this movement having caused the lever 16 to pivot, from its position of the figure 16 , towards his position of liberation.

An inverted organization is quite possible in which the lug 21 is secured to the movable portion 12 while the recess 22 is formed in the fixed portion 11.

The abutment 10 according to the first embodiment comprises a knee mechanism (visible on the figures 3 and 12 ) biasing the lever 16 and configured so that the locking position and the releasing position are stable positions at the ends of a total lever tilting stroke in which is included an unstable intermediate position of the lever corresponding to a hard point of cusp. The term "stable" means that it is a position adopted naturally in the absence of external forces applied to the lever at the foot pedal 19 and at the actuating element 17. This The toggle mechanism comprises, for example, a boot / release spring 23 whose ends are mounted articulated along axes C, E respectively on the lever 16 and on the movable part 12. The hard crawl point corresponds to an organization not shown in which the axes C, D and E are aligned in which the compression of the spring boot / heave 23 is maximum. On the other hand, the stable positions of blocking and release respectively represented on the figures 3 and 12 correspond to an organization in which the axes C, D and E are not aligned (the axis C being respectively at the top or bottom of the line passing through the axes E and D) and in which the compression of the boot / release spring 23 is minimal.

The first and second bearing surfaces, that is to say here the pin 21 and the recess 22, are shaped so that their relative sliding during the displacement of the movable part 12 has the effect of causing a tilting of the lever 16 on an angular stroke from the stable locking position to a position between the cusp hard point and the stable release position. Thus, following the displacement of the movable portion 12 beyond the predetermined stroke that has the effect of causing the lever 16 to tilt to the unstable intermediate position, it is the action of the toggle mechanism on the lever 16 which causes the tilting thereof from the unstable intermediate position to the stable release position, in order to place the stopper 10 in its torsional release configuration.

The recess 22 may have any shape as long as it is adapted to provide an operation as developed above. In the variant shown, the recess 22 has a profile, seen in section (Y, Z), in the form of an arc of a circle, giving a progressivity of the movement of the lever 16 during the displacement of the movable part 12 and contributes to an effect of recentering the movable portion 12 to its rest position explained below. However, in its central part, the profile of the recess 22 seen in section (Y, Z) may be different, for example in the form of a horizontal flat Y. This ensures that when the lug 21 is in support at the level of said flat, the lever 16 is not biased towards its release position.

The first and second bearing surfaces, that is to say here the lug 21 and the recess 22, could however be shaped so that their Relative sliding during the displacement of the movable portion 12 has the effect of causing a tilting of the lever 16 on its total angular travel from the stable locking position to its stable release position.

As indicated above, the stop 10 comprises a trigger spring 14 interposed between the movable and fixed parts 12, 11 and biasing the mobile part 12 in a determined rest position with respect to the fixed part 11. The triggering spring 14 is extends, in the first embodiment, along an axis oriented substantially in the transverse direction Y of the abutment which also comprises an adjusting means 24 ( figure 5 ) of the stiffness of the trigger spring 14, for example by means of a screw-nut system accessible in a transverse direction Y from one of the sides of the abutment 10. The boot configuration of the abutment 10 corresponds to an arrangement of the stop 10 in which the movable portion 12 is in its rest position and the jaws are at the same time in their open positions. On the other hand, the transverse displacement of the movable part 12 from its rest position during the passage of the stop 10 towards the torsional release configuration, under the effect of the transverse forces applied by the boot on one of the jaws during a transverse displacement of the boot in case of skier's fall with a twisting movement, is accompanied by a progressive compression of the trigger spring 14 which tends to return the movable portion 12 to its rest position as soon as these efforts cease.

At the time of donning and removal by voluntary action of the user on the lever 16, only the spring 23 of the toggle mechanism is biased. The forces required for this action are advantageously low, especially less than about 110 N and constant regardless of the setting of the binding according to the Alpine standard ISO9462. They are in particular independent of the adjustment of the stiffness of the trigger spring 14. During the automatic return phase of the movable part 12 towards its rest position following a triggering configuration, only the stiffness of the triggering spring 14 comes into play. due to the fact that the spring 23 of the toggle mechanism is then very little or not solicited. During the trip, as the movable portion 12 moves and the lever 16 toggles, the two springs 14 and 23 are biased and participate in the definition of the trigger force threshold of the stop.

Finally, as indicated above, the device for attaching the boot to the gliding board comprises on the one hand such a stop 10 intended to secure the front part of the boot, on the other hand a not shown heel for to ensure the attachment of a rear portion of the shoe on the gliding board. Thanks to the arrangement of a stop 10 as described above, the release of the boot from the fastener in the event of torsion drop can advantageously be achieved only by the stop 10. The heel can therefore be configured to produce a triggering of the boot only in the event of a fall before the skier, and not to perform the trigger in torsion. Even in the context of the practice of ski touring, the use of a simple heel is possible, which results in a lower cost and a lower weight of the fixing device compared to the prior art. This favors the performance of ski touring for which the overall weight is currently an essential criterion.

The second embodiment is illustrated on the figures 20 and following.

A first difference concerns the nature of the mounting system of the mobile part 12 on the fixed part 11 of the abutment 10. In the second embodiment, to constitute the mounting system of the movable part 12 on the fixed part 11, mobile base 26 of the movable part 12 is mounted in a circular translation relative to the fixed base 27 of the fixed part 11 by means of two links 28 parallel to each other arranged in the manner of a deformable parallelogram. Each link 28 comprises a first end 28a hinged to the fixed base 27 and a second end 28b, opposite the first end 28a, hinged to the movable base 26. The hinge movement of the two links 28 relative to the mobile bases and fixed confers a possibility of curvilinear translation, in particular circular, directed transversely. The trajectory of the moving part is marked C on the figure 21 .

A second difference is based on the removal of the foot pedal 19 and the toggle mechanism used in the first embodiment. The lever 16 and its operating principle relative to the groove elements 25d, 25g and the jaws 13d, 13g are retained but the nature of its mounting on the rest of the movable portion 12 is different. A return spring 32 constantly urges the lever 16 towards its locking position in which the locking elements 25d, 25g integral with the lever 16 prevent tilting of the jaws 13d, 13g, by their contact against the bearing surfaces 18d, 18g . The return spring 32 ( figure 21 ) is constituted for example by at least one torsion spring having at least one first tab connected to the lever 16, in particular with a possibility of relative sliding of the first tab relative to the body of the lever 16, and at least one second tab linked to the movable base 26 of the movable part 12. To allow the lever 16 to be tilted towards its release position from the locking position, for example at the time of fitting, it should be pressed on the actuating element 17 by hand, with a shoe or with his stick. By coming to occupy the release position, the lever 16 moves the locking elements 25d, 25g to a position in which they allow the jaws 13d, 13g to pivot. Thus, this voluntary pivoting of the lever 16 places the abutment 10 in its boot configuration, the jaws being sufficiently open towards the outside of the abutment to allow the establishment of the shoe between the retaining elements 20d, 20g. It should therefore be specified that, unlike the operation provided by the toggle mechanism in the first embodiment, the release position of the lever 16 in the second embodiment is an unstable position. The booting operation is very easy to perform without significant effort to overcome the fact that the user goes against the weak force of the return spring 32 urging the lever 16. In the second embodiment, only the locking position of the lever 16 is a stable position, being continuously biased towards this position by the return spring 32, which can also be of any other nature than that described above when the desired function is fulfilled.

With reference to Figures 26 to 29 , a third difference is based on the organization of the trigger spring 14 which is different in nature from that used in the first embodiment. As indicated above, the stopper 10 comprises at least one triggering spring 14. In the particular example illustrated, two such springs 14 are interposed between the movable and fixed parts 12, 11 and urge the movable part 12 into a determined rest position. relative to the fixed part 11. The two release springs 14 are parallel and extend, in the second embodiment, along an axis oriented substantially in the longitudinal direction X of the abutment 10. The two springs 14, secured to the mobile part 12, solicit longitudinally a piston 29 belonging to the movable portion and movable in the longitudinal direction X relative to the movable base. The piston 29, arranged on the front side of the abutment 10 along X while the trigger elements are arranged on the rear side of the next abutment X, has a first convex surface 30 convex, domed for example. The first bearing surface 30 is in permanent contact with a second bearing surface 31 carried by the fixed part 11, but with a possibility of relative sliding between the bearing surfaces 30, 31 in the transverse direction Y. The shape the second bearing surface 31 is concave and substantially complementary to that of the first bearing surface 30. The shape of these surfaces 30, 31, for example in the form of ramps, on either side of the median longitudinal axis in the transverse direction to adjust the recentering of the movable portion 12 of the abutment 10 transversely and the shape of the trigger curve of the stop 10. The rest position of the movable part 12 corresponds to the adopted position by the movable portion 12 when the first bearing surface 30 is housed and centered transversely in the bottom of the cavity defined by the second bearing surface 31. This is the position normally adopted outside of the situa transverse displacement of the movable part 12 and automatic release of the abutment 10.

The boot configuration of the stop 10 corresponds to an organization of the stop 10 in which the movable portion 12 is in its rest position above and the jaws are at the same time in their open positions. It is adopted by lowering the lever 16 towards its release position. On the other hand, the transverse displacement of the movable part 12 from its rest position during the passage of the stop 10 towards the torsional release configuration, under the effect of the transverse forces applied by the boot on one of the jaws during a transverse displacement of the shoe in case of falling of the skier with a torsion movement, is accompanied by a relative sliding of the surfaces 30, 31 and a progressive compression in the longitudinal direction X of the two release springs 14 via the piston 29, which tend to return the moving part 12 to its rest position as soon as these efforts cease. The second embodiment always comprises a means 24 for adjusting the stiffness of the two release springs 14 ( figure 29 ).

The stop 10 according to the second embodiment comprises trigger elements of the same nature and the same function as those described in relation to the first embodiment.

On the figure 23 , the fixed base 27 is absent to facilitate the understanding of the assembly. The lug 21 integral with the fixed part 11 is in contact with the hollow 22 carried by the lever 16 belonging to the mobile part 12. The lever 16 is in the locking position, the actuating element 17 being tilted upwards , and the locking elements 25d, 25g bear against the bearing surfaces 18d, 18g of the jaws to prevent any pivotal movement relative to the mobile base 26.

Finally, the invention relates to the gliding board itself which comprises such a stop and / or such a fixing device. Advantageously, the gliding board makes it possible to constitute a ski touring.

• la fourniture d'une solution de fixation d'une chaussure qui soit simple, peu encombrante, économique et légère,
• la fourniture d'une solution de fixation d'une chaussure qui garantisse une sécurité optimale au skieur en cas de chute permettant de respecter la norme alpine ISO9462,
• la fourniture d'une butée permettant un déclenchement en torsion associée à une talonnière configurée pour assurer un déclenchement uniquement en chute avant,
• permettre de respecter également la norme randonnée ISO13992,
• permet une utilisation en randonnée, grâce à une possibilité de pivotement de la chaussure vers le haut autour des éléments de retenue 20d, 20g, dans le cas où la talonnière ne retient plus le talon de la chaussure,
• la fourniture d'une butée présentant un effort de chaussage et de déchaussage faible et constant quel que soit le réglage du seuil d'effort de déclenchement choisi par le skieur.

The advantages of the solution described above are:

• the provision of a solution for attaching a shoe which is simple, compact, economical and light,
• the provision of a shoe attachment solution that guarantees the skier optimal safety in the event of a fall, which complies with the alpine standard ISO9462,
• the provision of an abutment allowing a torsion release associated with a heel piece configured to ensure a trigger only in front fall,
• allow to also respect the ISO13992 hiking standard,
• allows use in hiking, thanks to a possibility of pivoting of the shoe upwards around the retaining elements 20d, 20g, in the case where the heel does not retain the heel of the shoe,
• the provision of an abutment having a foot force and low heave constant regardless of the setting of the trigger force threshold chosen by the skier.

• la fonction de chaussage-déchaussage,
• une fonction supplémentaire de déclenchement en torsion,
• une fonction de blocage des mâchoires active tant qu'un déclenchement n'est pas nécessaire.

An additional advantage is that the abutment 10 previously described gives the lever 16 two distinct functions:

• the boot-heave function,
• an additional function of trigger in torsion,
• a jaw lock feature activates as long as a trigger is not needed.

• ladite position de blocage dans laquelle les éléments de blocage solidaires du levier 16 occupent une première position dans laquelle ils bloquent les mâchoires 13d, 13g dans leurs positions de fermeture et bloquent la butée 10 dans sa configuration de fermeture,
• ladite position de libération dans laquelle les éléments de blocage solidaires du levier 16 occupent une deuxième position distincte de la première position et dans laquelle ils autorisent un basculement des mâchoires 13d, 13g.

In summary, the principle is identical in the first and second embodiments and is as follows. The lever 16 is pivotally mounted, in particular on the mobile part 12, so as to vary between:

• said locking position in which the blocking elements integral with the lever 16 occupy a first position in which they block the jaws 13d, 13g in their closed positions and block the abutment 10 in its closed configuration,
• said release position in which the locking elements integral with the lever 16 occupy a second position distinct from the first position and in which they allow a tilting of the jaws 13d, 13g.

The passage of the locking elements from the first position to the second position and reciprocally is practiced by a displacement of the locking elements by pivoting relative to the movable portion 12 along an axis directed in the transverse direction: the locking elements are mounted from articulated manner, including rotation along this axis, relative to the movable portion 12.

In their first position, the locking elements extend between the jaws 13d, 13g and bear against the bearing surfaces 18d, 18g of the jaws 13d, 13g. In particular in the second embodiment, the locking elements 25d, 25g are held in their first position as defined above, by the action of the return spring 32.

The trigger elements 21, 22 cooperate with the locking elements in such a way that the implementation of said displacement of the mobile part 12 with respect to the fixed part 11 beyond the predetermined stroke causes the automatic passage of the elements of the blocking their first position to their second position.

It also emerges from all the foregoing that the mobile part 12, in particular the mobile base 26, is biased by a first spring constituted by the trigger spring 14 oriented transversely or longitudinally while the locking elements 25d, 25g are solicited by a second return spring independent of said first spring and urging the locking elements 25d, 25g to a position in which they prohibit the pivoting of the jaws 13d, 13g and block the abutment 10 in its closed configuration. In the first embodiment, said second return spring is formed by the boot / release spring 23. In the second embodiment, said second return spring is formed by the return spring 32.

As previously indicated, in each of the first and second embodiments, the first and second bearing surfaces 22, 21 are shaped so that their relative sliding causes the lever 16 to move from its locking position to its release position. And concomitantly the passage of the locking elements 25d, 25g from their first position to their second position.

• des mâchoires 13d, 13g mobiles en rotation sur une embase mobile 26 de la partie mobile 12, dont le déplacement transversal se pratique à l'encontre d'une force d'un premier ressort de rappel, notamment formé par le ressort de déclenchement 14 rappelant la partie mobile 12 vers une position de repos,
• des éléments de blocage 25d, 25g qui occupent une première position dans laquelle ils bloquent le pivotement des mâchoires sous l'effet d'un deuxième ressort de rappel distinct du premier ressort de rappel,
• et des éléments déclencheurs 21, 22 coopérant avec les éléments de blocage 25d, 25g d'une manière telle que la mise en oeuvre dudit déplacement transversal au-delà d'une course prédéterminée provoque le passage automatique des éléments de blocage, en s'opposant à l'action du deuxième ressort de rappel, de la première position vers une deuxième position dans laquelle les éléments de blocage 25d, 25g autorisent un basculement des mâchoires 13d, 13g pour permettre l'ouverture des mâchoires 13d, 13g et libérer la chaussure.

In each of the first and second embodiments, the stop 10 comprises:

• jaws 13d, 13g movable in rotation on a movable base 26 of the movable portion 12, the transverse displacement is practiced against a force of a first return spring, in particular formed by the triggering spring 14 reminding the moving part 12 to a rest position,
• locking members 25d, 25g which occupy a first position in which they block the pivoting of the jaws under the effect of a second return spring distinct from the first return spring,
• and trigger elements 21, 22 cooperating with the locking elements 25d, 25g in such a manner that the implementation of said transverse displacement beyond a predetermined stroke causes the automatic passage of the locking elements, by opposing the action of the second return spring, the first position to a second position in which the locking elements 25d, 25g allow tilting of the jaws 13d, 13g to allow the opening of the jaws 13d, 13g and release the shoe.

Once again, in the first embodiment, said second return spring is formed by the boot / release spring 23 while in the second embodiment, said second return spring is formed by the return spring 32.

Claims (21)

Stopper (10) for a device for attaching a boot to a gliding board, comprising a fixed part (11) intended to be fixed on the gliding board, a movable part (12) mounted on the fixed part with a possibility of relative displacement (T) having at least one transverse component and on which two jaws (13d, 13g) are mounted to pivot about a substantially longitudinal axis (Ag, Ad), the stop (10) comprising a lever (16) operable since outside the stop (10) and occupying a locking position in which locking elements (25d, 25g) integral with the lever (16) prohibit tilting of the jaws (13d, 13g) to maintain the stop (10) in a closure configuration in which the jaws (13d, 13g) retain the boot, characterized in that it comprises trigger elements (21, 22) cooperating with the locking elements (25d, 25g) in such a way that the setting implementation of the aforesaid cementing the movable part (12) relative to the fixed part (11) beyond a predetermined stroke causes the lever (16) to be automatically moved, in particular from the blocking position, to a position of release distinct from the blocking position and in which the locking elements (25d, 25g) allow tilting of the jaws (13d, 13g). Stopper (10) according to claim 1, characterized in that the mounting system of the movable part (12) on the fixed part (11) is such that the sliding movement of the movable part (12) relative to the part fixed (11) is made in a rectilinear trajectory, in particular substantially oriented in the transverse direction (Y), or in a curvilinear trajectory with at least one component mainly in the transverse direction (Y), in particular substantially or exactly circular delimiting a portion of a circle whose center is intended to be located near the heel of the shoe. Stopper (10) according to claim 2, characterized in that the mounting system of the movable part (12) on the fixed part (11) comprises slide-type guiding elements ensuring sliding installation by translation of a base mobile (26) of the movable part (12) on a fixed base (27) of the fixed part (11). Stopper (10) according to claim 2, characterized in that the mounting system of the movable part (12) on the fixed part (11) comprises two rods (28) parallel to each other arranged in the manner of a deformable parallelogram ensuring a circularly translational mounting of a movable base (26) of the movable part (12) on a fixed base (27) of the fixed part (11). Stopper (10) according to one of claims 1 to 4, characterized in that the locking elements (25d, 25g) are mounted in an articulated manner, in particular with respect to rotation, relative to the movable part (12) to vary between a first position occupied in the locking position of the lever (16) and in which they block the jaws (13d, 13g) and the stop (10) in its closed configuration, and a second position distinct from the first position, occupied in the position of release of the lever (16) and in which they allow tilting of the jaws (13d, 13g) and in that the trigger elements (21, 22) cooperate with the locking elements (25d, 25g) in such a way that the implementation of said displacement of the movable part (12) relative to the fixed part (11) beyond the predetermined stroke causes the automatic passage of the locking elements (25d, 25g) from their first position to their second position. position. Stop (10) according to any one of claims 1 to 5, characterized in that the lever (16) is hingedly mounted on the movable part (12). Stopper (10) according to one of claims 1 to 6, characterized in that the stop comprises a toggle mechanism provided with a spring boot / release (23) biasing the lever (16) and configured so that the position locking and release position are stable positions at the ends of a total tilting stroke of the lever (16) in which there is included an unstable intermediate position of the lever (16) corresponding to a hard point of the toggle of the toggle. Stopper according to one of claims 1 to 7, characterized in that the trigger elements (21, 22) comprise first and second bearing surfaces (22, 21) respectively integral with the movable and fixed parts (12, 11), in contact with each other by undergoing relative sliding on one another during the implementation of said displacement of the movable part (12), the first and second bearing surfaces being shaped so that relative sliding causes the lever (16) to move from its locking position to its release position. Stopper (10) according to claim 8, characterized in that the first bearing surface (22) is carried by the locking elements (25d, 25g) integral with the lever (16). Stopper (10) according to one of claims 8 or 9, characterized in that one of the first and second bearing surfaces is constituted by a lug (21) and the other of the first and second bearing surfaces is formed by a recess (22) in which the pin (21) penetrates before said displacement of the movable part (12) and shaped so that the pin (21) comes gradually outside the recess (22) during the relative sliding of the first and second bearing surfaces in a manner creating the passage of the lever (16) from its locking position to its release position. Stopper (10) according to claim 10, characterized in that the recess (22) is integral with the lever (21) and the lug (21) is integral with the fixed part (11). Stop (10) according to one of claims 1 to 11, characterized in that the stop comprises at least one tripping spring (14) interposed between the fixed and movable parts (11, 12) and urging the movable part (12) in a position of rest determined with respect to the fixed part (11). Stopper (10) according to claim 12, characterized in that it comprises a means (24) for adjusting the stiffness of the release spring (14). Stopper (10) according to one of claims 12 or 13, characterized in that the locking elements (25d, 25g) are biased by a return spring (23, 32) independent of the release spring (14), and biasing the locking elements (25d, 25g) to a position, in particular said first position, in which they prohibit the pivoting of the jaws (13d, 13g) and block the stop (10) in its closed configuration. Stopper (10) according to one of claims 1 to 14, characterized in that the locking elements (25d, 25g) consist of lateral flanks of the lever (16) which, in the locking position of the lever (16) are in abutment against bearing surfaces (18d, 18g) integral with the jaws (13d, 13g), in particular on their internal face. Stopper (10) for a device for attaching a boot to a gliding board, comprising a fixed part (11) intended to be fixed on the gliding board, a movable part (12) mounted on the fixed part with a possibility of relative displacement (T) having at least one transverse component, the abutment (10) comprising: jaws (13d, 13g) movable in rotation on a movable base (26) of the movable part (12), whose transverse displacement is practiced against a force of a first return spring (14) , recalling the mobile part (12) towards a rest position, - locking elements (25d, 25g) which occupy a first position in which they block the pivoting of the jaws under the effect of a second return spring (23, 32) separate from the first return spring (14), and triggering elements (21, 22) cooperating with the blocking elements (25d, 25g) in such a way that the implementation of said transverse displacement beyond a predetermined stroke causes the automatic passage of the blocking elements. (25d, 25g), opposing the action of the second return spring (23, 32), from the first position to a second position in which the locking elements (25d, 25g) allow the jaws to tilt ( 13d, 13g) to allow the opening of the jaws (13d, 13g) and release the shoe. Stopper (10) according to claim 16, characterized in that the mounting system of the movable part (12) on the fixed part (11) is such that the sliding movement of the movable part (12) with respect to the fixed part (11) takes place in a rectilinear path, in particular substantially oriented in the transverse direction (Y), or along a curvilinear trajectory with at least one component principally in the transverse direction (Y), in particular substantially or exactly circular delimiting a portion of a circle whose center is intended to be located near the heel of the shoe. Stopper (10) according to one of claims 16 or 17, characterized in that the locking elements (25d, 25g) are mounted in an articulated manner, in particular with respect to rotation, with respect to the movable part (12) so that the passage of the locking elements (25d, 25g) from the first position to the second position and reciprocally occurs by a displacement of the locking elements (25d, 25g) by pivoting relative to the movable part (12) along an axis directed according to the transverse direction (Y). Stopper according to one of claims 16 to 18, characterized in that the trigger elements (21, 22) comprise first and second bearing surfaces (22, 21) respectively integral with the movable and fixed parts (12, 11), in contact with each other by undergoing relative sliding on one another during the implementation of said displacement of the movable part (12), the first and second bearing surfaces being shaped so that relative sliding causes the locking elements to move from their first position to their second position. Device for attaching a boot to a gliding board, comprising on the one hand a stop (10) according to any one of the preceding claims intended to ensure the attachment of a part before the boot, on the other hand a heel for fixing a rear portion of the boot on the gliding board, the heel being configured to trigger the boot only in case of fall before the skier, the release of the boot from the fastening device in the event of a fall in torsion being achieved solely by the stop. Gliding board, especially ski touring, comprising a stop (10) according to any one of claims 1 to 19 and / or a fastening device according to claim 20.

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