EP2769755B1 - Front unit with automatic triggering when twisted - Google Patents

Description

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

The document EP-A1-2353673 describes a stop of a device for fixing a boot on a ski touring. The front binding of the boot rests on two jaws of the stop articulated along longitudinal pivot axes relative to a base of the stop 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 in order to occupy a first stable position known as closed in which the retaining elements cooperate with corresponding hollow parts arranged laterally in the front part of the ski touring boot, in order to fix the boot allowing only its rotational movement about an axis transverse to the ski, and a second stable position called open in which the jaws are separated so that the retaining elements release the boot which can be separated from the ski touring. The front part of the boot is attached to a ski touring ski equipped with such a stopper is positioned by positioning the boot while the two jaws occupy the second open position, then pressing strongly with the sole of the boot on the system spring-based which allows the passage of the articulated jaws towards their first closed position in which they approach the shoe in order to position the retaining elements within complementary hollow parts of the shoe.

A drawback of such existing stops is their lack of security in the event of a fall of the skier, in particular in the case of a torsional fall of the skier in a downhill situation of the alpine ski type, implying a torsional movement of the boot relative to the ski during which the boot remains trapped in the stop, which risks inducing injuries to the skier.

A known way to automatically release the hiking shoe to avoid injury to the skier is to provide a heel associated with such existing stops, intended for fixing the rear part of the hiking shoe, configured so as to be able to release the shoe in the event of a fall, especially in torsion but also in front fall and / or rear fall. However, such heel pieces are complex, which involves a high cost and a significant weight, and do not meet the safety criteria imposed by the alpine standard ISO9462. This limits the security conferred on the touring skier.

The document EP-B1-1393783 describes another type of stop comprising jaws also articulated along longitudinal axes on a transversely movable part. The jaws are in contact with a rocker which prevents the jaws from tilting as long as the displacement travel of the movable part is less than a given travel. Then the jaws tip and release the shoe. However, this solution is complex, bulky and cumbersome due to the existence of the rocker.

The document EP-A1-2431080 describes a stop having a fixed part and a part which can be moved by rotation about a vertical axis. The mobile part comprises two jaws conventionally associated by a toggle mechanism with a lever, integral with the mobile part. Leverage varies selectively between a low position placing the stopper in an open position where the jaws are separated to allow the shoe to be put in the stopper, a semi-high position in which the jaws are brought together to place the stopper in a closed position suitable for downhill use and a high position in which locking elements integral with the lever are in contact with a cam surface integral with the fixed part to block any possibility of the lever returning 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 running position. In the closed position of the stop, occupied in the semi-high position of the lever, the mobile part can pivot on a predetermined limited angular travel, this pivoting being in opposition to the action of a return spring of the mobile part. towards a centered position. In the operating position of the stop, occupied in the high position of the lever, the lever comes to be placed between lateral wings integral with the fixed part, which prohibits the pivoting movement of the mobile part relative to the fixed part. In the event of a fall, a heel trigger occurs at first in the heel area. This allows an overall movement of the shoe. During this movement, the shoe rotates the movable part relative to the fixed part, until it abuts at the end of its predetermined travel. There is then an abrupt stop of the moving part. In a second step, the extension of the movement of the shoe due to the fall, while the movable 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 its low position, releasing the shoe. Thus, the triggering occurs in two stages: in the first stage, during the rotation of the mobile part, the jaws are locked in the closed position and hold the shoe in the stop, while in the second stage which begins 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 low position. However, this solution is still complex, bulky and cumbersome. The security conferred is unsatisfactory because the trigger requires a very large angular movement of the shoe.

The purpose of the present invention is to provide a solution for fixing a shoe on a gliding board which overcomes the drawbacks listed above.

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

A second object of the present invention is to provide a solution for attaching a boot guaranteeing optimum safety for the skier in the event of a fall and limiting as much as possible the risks of material deterioration.

In particular, the invention aims to propose a stop allowing triggering in torsion associated with a heel piece configured to ensure triggering only in forward fall.

This stop is intended in particular to comply with both the ISO13992 hiking standard and the ISO9462 alpine standard.

These aims can be achieved by means of a stop for a device for fixing a boot on a sliding board, comprising a fixed part intended to be fixed on the sliding 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 pivotally mounted on 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 prevent tilting of the jaws to maintain the stop in a closed configuration where the jaws hold the shoe, the stop comprising trigger elements cooperating with the locking elements in such a way that the implementation of said movement of the movable part relative to the fixed part beyond d 'A predetermined stroke causes the automatic passage of the lever, in particular from the locking position, to a release position distinct from the locking position and in which the locking elements allow the jaws to tilt.

• 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 movable in rotation on a movable base of the movable part, the transverse displacement of which takes place against a force of a first return spring, recalling the movable part towards 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, by opposing the action of the second return spring, from the first position to a second position in which the locking elements allow the jaws to tilt to allow the jaws to open and release the shoe.

Preferably, the system for mounting the mobile part on the fixed part is such that the sliding movement of the mobile part relative to the fixed part takes place along a rectilinear trajectory, in particular substantially oriented in the transverse direction, or according to 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 system for mounting the movable part on the fixed part can comprise guide elements of the slide type ensuring sliding mounting by translation of a movable base of the movable part on a fixed base of the fixed part. Alternatively, the system for mounting the mobile part on the fixed part can comprise two parallel rods arranged between them in the manner of a deformable parallelogram ensuring a circular translation mounting of a mobile base of the mobile part on a fixed base of the fixed part.

The locking elements can in particular be mounted in an articulated manner, in particular in rotation, relative to the movable part in order to vary between a first position occupied in the locking position of the lever and in which they block the jaws and the stopper in its configuration of closure, and a second position distinct from the first position, occupied in the release position of the lever and in which they allow the jaws to tilt and the trigger elements can cooperate with the elements in such a way that the implementation of said displacement of the movable part relative to the fixed part beyond the predetermined stroke causes the automatic passage of the locking elements from their first position to their second position.

The lever can be hinged on the movable part.

The stop may include a toggle mechanism provided with a boot / 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 tilting stroke of the lever in which is included an unstable intermediate position of the lever corresponding to a hard cusp of the knee lifter.

Preferably, the triggering elements may comprise first and second bearing surfaces respectively integral with the movable and fixed parts, in contact with one another by undergoing a relative sliding one on the other during the implementation. of said displacement of the mobile part, the first and second bearing surfaces being shaped so that this relative sliding causes the lever to pass from its blocking position to its release position.

The first bearing surface can be carried by the locking 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 into which the lug penetrates prior to said movement of the movable part and shaped so that the lug comes gradually 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 can be secured to the lever and the lug is secured to the fixed part, but a reverse arrangement can be provided.

The stop may include a foot pedal integral with the lever and the recess may be formed in the foot pedal.

The stop may include at least one trigger spring interposed between the fixed and mobile parts and urging the mobile part into a rest position determined relative to the fixed part.

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

The locking elements can be biased by a return spring independent of the trigger spring, and biasing the locking elements towards a position, in particular said first position, in which they prevent the jaws from pivoting and block the stop in its closed configuration. .

The stop may include elastic elements urging the jaws in a tilting movement tending to place the stop in a fitting configuration.

It can be made so that in the fitting configuration, the angular position occupied by the jaws is an intermediate position between the angular positions occupied in the closing and triggering configurations of the stop.

The locking elements consist of lateral sides of the lever which, in the lever locking position, are supported against the bearing surfaces integral with the jaws, 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 œuvre 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 goals can also be achieved by a stop for a device for fixing a shoe on a sliding board, comprising a fixed part intended to be fixed on the sliding board, a mobile part mounted on the fixed part with the possibility of displacement. relative having at least one transverse component, the stop comprising:

• jaws movable in rotation on a movable base of the movable part, the transverse displacement of which takes place against a force of a first return spring, recalling the movable part towards a rest position,
• blocking 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 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 the jaws to tilt to allow the jaws to open and release the shoe.

The system for mounting the mobile part on the fixed part can be such that the sliding movement of the mobile part relative to the fixed part takes place along a rectilinear trajectory, in particular substantially oriented in the transverse direction, or according to 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 can be mounted in an articulated manner, in particular in rotation, relative to the movable part so that the passage of the locking elements from the first position to the second position and vice versa is effected by a displacement of the locking elements by pivoting with respect to the movable part along an axis directed in the transverse direction.

The triggering elements may comprise first and second bearing surfaces respectively integral with the mobile and fixed parts, in contact with one another while undergoing a relative sliding one on the other 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 fixing a shoe on a gliding board, may comprise on the one hand such a stop intended to ensure the fixing of a front part of the shoe, on the other hand a heel piece intended to ensure the fixing of a rear part of the boot on the gliding board, the heel being configured to trigger the boot only in the event of the skier falling before, the boot triggering out of the binding device in the event of a torsional fall being achieved only by the stop.

Finally, a gliding board, in particular ski touring, may include such a stop and / or such a fixing 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 characteristics will emerge more clearly from the description which follows of particular embodiments of the invention given by way of nonlimiting examples and represented in the appended drawings, in which:

• the Figures 1 to 9 illustrate a first embodiment of a stop according to the invention in a closed configuration,
• the figures 10 to 13 illustrate the stop of the previous figures in a fitting configuration,
• the figures 14 to 16 illustrate the stop of the previous figures during the transition from the closing configuration to a torsional tripping configuration,
• the figures 17 to 19 illustrate the stop of the previous figures in the torsional release configuration,
• the figures 20 to 23 illustrate a second embodiment of a stop according to the invention, in its closed configuration,
• the figures 24 and 25 illustrate the stop of figures 20 to 23 in its shoe configuration,
• the figures 26 to 28 represent the system for mounting the mobile part on the fixed part of the stop according to the second embodiment,
• and the figure 29 shows the trigger system interposed between the movable and fixed parts of the stop according to the second embodiment.

The following description relates to a stop 10 of a device for fixing a boot on a gliding board (not shown). This stop 10 secures the front part of the boot 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 stopper 10 contributes to the constitution of the device for fixing the boot on the gliding board, in combination with a rear heel (not shown) securing the rear part of the shoe. The Figures 1 to 19 illustrate a first embodiment of such a stop 10. The figures 20 to 29 illustrate a second embodiment of such a stop 10. For reasons of simplification, the reference numbers are kept from one embodiment to another for the functional elements having the same function in the two embodiments.

To facilitate understanding of the rest of the description, an orthonormal reference frame is associated with the stop 10, the longitudinal direction X of the stop 10 being the horizontal direction oriented from the rear towards 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 directions X and Y and is oriented towards the top of the stop 10 .

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

The stop, 10 which therefore belongs to the device for fixing the boot on the sliding board, comprises a fixed part 11 intended to be fixed on the sliding board (for example by means of fixing screws 15), a part mobile 12 mounted on the fixed part 11 with a possibility of relative movement having at least one transverse component. It may in particular be a possibility of sliding or translational movement of the mobile part 12 relative to the fixed part 11 along a rectilinear trajectory (marked “T” on the figure 2 ), notably substantially oriented in the Y direction, or along a curvilinear trajectory (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 trajectory delimiting 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 system for mounting the mobile part 12 on the fixed part 11 is configured so as to allow these movements of movement of the mobile part 12, along the paths T or C. It is indeed understood here that the nature of these displacement possibilities is different from a circular pivoting movement.

In the first embodiment, to constitute the system for mounting the mobile part 12 on the fixed part 11, a mobile base 26 of the mobile part 12 is slidably mounted relative to a fixed base 27 of the fixed part 11 by by means of guide elements of the slide type ensuring a possibility of translation, for example of rectilinear shape, directed transversely. These guide elements can be in the form of elements of complementary shape carried by the fixed and mobile bases respectively.

The figures 7 , 16 and 19 are sectional views of the stop 10 along a section 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 stopper 10. The figure 8 is a sectional view of the stop 10 along a cutting plane BB oriented in the directions Y, Z passing through a trigger spring 14 mentioned later and visible on the figures 4 and 9 which are respectively views from above along Z of the stop 10 and from below along Z of the fixed part 11.

The stop 10 comprises two rigid jaws 13d, 13g, respectively left and right, offset in the direction Y relative to each other. The stop 10 being 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 of the part left of the stopper 10. The jaws 13g, 13d include retaining elements 20d, 20g intended to ensure the retention of the shoe when the stopper is in a closing configuration detailed below. These retaining elements 20d, 20g are for example in the form of pins intended to engage in lateral openings formed in the shoe. The jaws are pivotally mounted around substantially horizontal axes Ad, Ag respectively (see figure 2 ) oriented substantially in the longitudinal direction X of the stop 10. Each of the jaws 13d, 13g is included in the plane of its displacement by tilting, the displacement planes of the two jaws 13d, 13g being moreover merged into a single oriented plane, in particular along directions Y and Z. The pivot axis Ad, Ag of each of the jaws 13d, 13g is fixed in a frame of reference linked to the movable part 12 of the stop 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 can be parallel to the longitudinal direction X or included in a plane (X, Z) by forming an angle of plus or minus 10 degrees from the horizontal. Each axis Ad, Ag can in particular be advantageously inclined downward along Z in the direction of the rear of the stopper 10 along X, this in order to promote the release of the shoe after the release explained below in a triggering configuration in torsion detailed below.

It follows that each jaw 13d, 13g can tilt, in its plane of movement, on a total angular travel respectively marked ad, ag 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 travel, 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 travel. 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 transition from one position to the other is achieved by tilting the jaw 13g, 13d around its pivot axis Ag, Ad over the entire angular travel which is advantageously greater than 30 degrees, in particular greater than 40 degrees, to provide an opportunity for triggering the shoe in torsion in the event of high transverse forces applied by the shoe to at least one of the jaws, in particular in the event of a fall involving a torsional movement of the shoe, to allow the release of the shoe on the left or right side of the stopper 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 which can be actuated manually or with a stick, from the outside of the stop 10, between:

• a locking position ( figure 3 ), or locking, in which it prohibits tilting of the jaws 13d, 13g about 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 shoe 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 released from the boot in order to allow the jaws 13d, 13g to tilt towards the open position around the axes Ad, Ag.

In the locking 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 towards their open positions and on the contrary blocks them in their closed positions. On the other hand, when it is in the release position, which is the case on the figures 10 to 13 after a voluntary action of the user at the level of an actuating element 17 detailed below or after an automatic action via triggering elements after sufficient movement of the movable part 12 relative to the fixed part, the lever 16 authorizes the passage of the two jaws 13d, 13g from their closed positions to their open positions, and vice versa.

Each jaw 13d, 13g for this purpose comprises a bearing surface, respectively 18d, 18g, located in the lower part of the corresponding jaw, in particular below the pivot axis Ad, Ag corresponding to this jaw and on their faces internal. These bearing surfaces are visible on the figure 7 , face each other in the transverse direction and are intended to cooperate by contact with locking elements integral with the lever 16. The locking elements are formed respectively by two lateral flanks 25d, 25g, for example formed in the lever 16 being delimited by 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 flanks 25d, 25g of the lever 16 when it occupies the locking position in order to prevent the tilting of the jaws 13d, 13g towards 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 locking elements integral with the lever 16 is eliminated when the lever 16 occupies its release position, which makes it possible to authorize the tilting of each jaw 13d, 13g from the closed position to the open position or vice versa from the open position to the closed position. These bearing surfaces 18d, 18g can be substantially vertical, and advantageously have a slight transverse inclination along Y towards the outside of the stop 10 going upwards along Z. The angle of inclination between the bearing surface 18d, 18g and the vertical direction Z can be around 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 makes it possible to automatically adapt the vertical position occupied by the lever 16 when it is in its locking position, as a function of the actual height and / or width of the sole of the shoe.

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

In the two embodiments, the locking elements 25d, 25g are said to be integral with the lever 16 in the sense that they come integrally with the rest of the lever so as to form a monobloc lever or that they are mounted on the lever 16 in a fixed manner or with a possible possibility of displacement 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 locking 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 part 12 relative to the fixed part 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 mobile part 12 relative to the fixed part 11 beyond this predetermined stroke, this displacement resulting from the application of torsional tripping 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 cons, below this predetermined stroke, the lever 16 remains in its locked position and keeps the jaws 13d, 13g in their closed positions which continue to retain the front part of the shoe. The predetermined stroke is in particular between 5 and 15 mm approximately, and is in particular substantially equal to approximately 10 mm.

In addition, the stop 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 occupied automatically following the displacement at least transverse of the movable part 12, causes the passage of the stop 10 towards the configuration known as torsional triggering. In this torsional trigger configuration, the stop is such that the shoe is released from the jaws 13d, 13g, under the effect of the application of torsional trigger forces by the shoe on said jaw 13d, 13g. In other words, a tilting of at least one of the jaws 13d, 13g consecutive to the movement of the mobile part 12 relative to the fixed part 11 beyond the predetermined stroke allows the stop 10 of the configuration to pass. closing towards torsional release configuration, automatically releasing the shoe from the jaws when torsional release forces are applied by the shoe to at least one of the jaws. The position adopted by said at least one jaw having tilted in the triggering 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 locking position to its release position, by manual application of forces by the latter at the level of the element actuation 17 of the lever 16, allows the passage of the stop 10 from the closed configuration to a so-called boot configuration allowing a fitting of the shoe between the jaws 13d, 13g. The position adopted by the jaws in the fitting configuration can be the open position or an intermediate angular position between the extreme open and closed positions defined above. Thus in the fitting configuration, the angular position occupied by the jaws can therefore be an intermediate position between the angular positions occupied in the closing and triggering configurations of the stopper 10, avoiding the need for jaw spacing beyond the needs for the installation 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 block the stop 10 in its closed configuration, it can then be placed in its release position:

• either by means of a voluntary application on the part of the user of efforts on the lever 16 at the level of the actuating element 17, in order to place the stopper 10 in the fitting configuration for which no movement of the mobile part 12 is necessary (this is then the configuration shown on the figures 10 to 13 ),
• either when the movable part 12 is moved along the path T over a stroke greater than the predetermined stroke mentioned above with respect 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 shoe: the stop 10 is then automatically put into the configuration for triggering in torsion, in the manner shown on the figures 17 to 19 .

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

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

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

The previous description of the torsional release configuration should be interpreted as implying that the travel of angular tilting of at least one jaw 13d, 13g between the closed configuration and the torsional triggering configuration of the stopper 10 is such that the shoe 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 along Z directed upwards. This angular tilting stroke can advantageously be greater than approximately 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 freely escape from space between the jaws 13d, 13g by a substantially horizontal movement of the shoe in the longitudinal X and transverse Y directions, passing over at least one jaw 13d, 13g, in particular over the jaw tilted in the open position under the effect of transverse torsional forces by the shoe after passage of the lever 16 towards the release position caused automatically by the movement of the movable part 12 relative to the fixed part 11.

The stop 10 may include, in each of its first and second embodiments, elastic elements (not shown) urging the jaws 13d, 13g in a tilting movement tending to place the stop 10 in the fitting 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 closing configuration of the stopper 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 open position of the jaw.

• 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.

However, these provisions are only optional in the sense that such an elastic element may be absent. The stop 10 can indeed 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 the transition to the torsional release configuration or to the boot configuration,
• and / or the effect of the transverse forces applied by the shoe during a transverse displacement of the latter for the passage to the configuration for triggering torsion,
• and / or the effect of the transverse forces applied by the shoe during a vertical displacement of the latter for the passage to the fitting configuration.

In these 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 displacement during the putting on of the shoe in the stop and / or under the effect of the transverse forces applied by the shoe 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 blocking action of the lever 16 is carried out by its blocking elements constituted here by the lateral flanks 25d, 25g which are in abutment against the bearing surfaces 18d, 18g, as long as the lever 16 is in the blocking position. The lever 16 then authorizes this tilting of the jaws under the effect of these different types of force 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 locking integral with the lever 16.

The lever 16 is articulated 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 in position by a tilting movement around an axis of pivoting marked “D”, for example oriented parallel to the transverse direction Y. However, it remains possible that the lever 16 is mounted, in particular in an articulated manner, on the fixed part of the stop 10.

The lever 16 may comprise a foot pedal 19, on 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 movement of the shoe directed downward in direction of the fixed part 11 and therefore towards the gliding board in the vertical direction Z, in particular when putting the shoe on in the retaining elements 20d, 20g integral with the jaws, causes the lever 16 to tilt towards the position blocking in which it maintains the stop 10 in its closed configuration due to its action of blocking the jaws 13d, 13g in their closed positions at their bearing surfaces 18d, 18g thanks to the blocking elements formed in this example by the lateral flanks 25d, 25g of the lever. This tilting movement of the lever 16 towards the blocking position automatically causes each jaw to return to its closed position. In other words, the blocking elements 25d, 25g consist of lateral sides of the lever 16 which, in the blocking position of the lever 16, are in abutment against bearing surfaces 18d, 18g integral with the jaws 13d, 13g, in particular on their inner side.

The foot pedal 19 is further configured so as to form a support along Z such that the lever 16 switches to its release position resulting from the passage of the stop 10 from the closed configuration to the configuration for triggering in torsion causes a lifting of the shoe 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 shoe and the retaining elements 20d, 20g carried by the jaws 13d, 13g. The bearing surface 18d, 18g carried by any jaw which rocks during the passage towards the configuration of triggering of torsion under the effect of the transverse forces applied by the shoe on this jaw during a transverse displacement of the shoe and the movable part 12 participates, due to its contact with the lever 16, in the tilting of the lever 16 towards its release position.

On the other hand, the lever 16 comprises the previously mentioned actuating element 17, arranged on a front side with respect to the axis D and intended to allow the application to the lever 16 of forces mainly oriented according to the Z direction. These are manual or applied efforts using 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 into its fitting configuration and therefore the tilting jaws 13d, 13g in the direction of 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 triggering configurations of the stop 10.

Generally, the triggering 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 one on the other during the implementation of the movement of the movable part 12 from its rest position along of the trajectory T when transverse forces are applied by the shoe to a jaw during a transverse movement of the shoe during a fall of the skier involving a twist of the shoe. The first and second bearing surfaces are shaped so that this relative sliding causes the lever 16 to pass from its blocking 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 recess 22 in which the lug 21 penetrates before the movement of the movable part 12 from its rest position and shaped so that the lug 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 locked position to its release position.

In the two illustrated embodiments where the lever 16 is secured to the movable part 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 integral with the fixed part 11.

These provisions are visible on the figures 7 , 16 and 19 . On the figure 7 , the lug 21 enters the hollow 22 when the movement of the movable part 12 has not yet taken place, that is to say as long as the stop 10 is in its closed configuration and in its fitting configuration . The recess 22 and the lug 21 are shaped so that the lug 21 comes 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 slipped relative to the hollow 22 and is very close to its peripheral edge. The lever 16 has not yet tilted to 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 outside the recess 22 by crossing the peripheral edge of the recess 22, this movement having caused the lever 16 to tilt, from its position of the figure 16 , towards its liberation position.

An inverted organization is entirely possible in which the lug 21 is integral with the movable part 12 while the recess 22 is formed in the fixed part 11.

The stop 10 according to the first embodiment comprises a toggle mechanism (visible on the figures 3 and 12 ) biasing the lever 16 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 cusp. The term “stable” means that it is a position adopted naturally in the absence of external forces applied to the lever at the level of the foot pedal 19 and at the level of the actuating element 17. This toggle mechanism includes for example a shoeing / heaving spring 23 whose ends are mounted articulated along axes C, E respectively on the lever 16 and on the movable part 12. The hard cusp point corresponds to an organization not shown in which the axes C, D and E are aligned in which the compression of the boot / release shoe spring 23 is maximum. On the other hand, the stable blocking and release positions represented respectively 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 shoe / shoeing spring 23 is minimal.

The first and second bearing surfaces, that is to say here the lug 21 and the recess 22, are shaped so that their relative sliding during the movement of the movable part 12 has the effect of causing the tilting of the lever 16 on an angular stroke going from the stable blocking position to a position located between the hard cusp and the stable release position. Thus, following the movement of the mobile part 12 beyond the predetermined stroke which has the effect of causing the lever 16 to tilt towards the unstable intermediate position, it is the action of the toggle mechanism on the lever 16 which causes the tilting of the latter from the unstable intermediate position to the stable release position, in order to place the stop 10 in its torsional tripping configuration.

The recess 22 can have any shape as long as it is suitable for providing an operation as developed above. In the variant shown, the hollow 22 has a profile, seen in section (Y, Z), in the form of an arc of a circle conferring a progressive movement of the lever 16 during the movement of the movable part 12 and participates in an effect of refocusing of the mobile part 12 towards its rest position explained below. However, in its central part, the profile of the hollow 22 seen in section (Y, Z) may be different, for example in the form of a horizontal flat along Y. This makes it possible to guarantee that when the lug 21 is in support at 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 movement of the movable part 12 has the effect of causing the lever 16 to tilt over its total angular travel going from the stable blocking 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 urging the movable part 12 in a determined rest position relative to the fixed part 11. The trigger spring 14 s' extends, in the first embodiment, along an axis oriented substantially in the transverse direction Y of the stop which also includes an adjustment means 24 ( figure 5 ) of the stiffness of the trigger spring 14, for example using a screw-nut system accessible in a transverse direction Y from one of the sides of the stopper 10. The fitting configuration of the stopper 10 corresponds to an organization of the stop 10 in which the movable part 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 mobile part 12 from its rest position during the passage of the stop 10 towards the torsional triggering configuration, under the effect of the transverse forces applied by the shoe on one of the jaws during a transverse movement of the boot in the event of a fall of the skier with a twisting movement, is accompanied by a progressive compression of the trigger spring 14 which tends to return the movable part 12 to its rest position as soon as these efforts cease.

When putting on and taking off by the voluntary action of the user on the lever 16, only the spring 23 of the toggle mechanism is stressed. The forces necessary for this action are advantageously low, in particular less than approximately 110 N and constant whatever 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 phase of automatic return of the movable part 12 to its rest position following a trigger configuration, only the stiffness of the trigger spring 14 intervenes. due to the fact that the spring 23 of the toggle mechanism is then very little or not stressed. During triggering, as the movable part 12 moves and the lever 16 switches, the two springs 14 and 23 are stressed and participate in the definition of the threshold for triggering force of the stop.

Finally, as indicated above, the device for fixing the boot on the gliding board, comprises on the one hand such a stop 10 intended to ensure the fixing of the front part of the boot, on the other hand a heel not shown intended for securing a rear part of the boot on the gliding board. Thanks to the arrangement of a stop 10 as previously described, the triggering of the shoe outside the fastening device in the event of a torsional fall can advantageously be achieved only by the stop 10. The heel piece can therefore be configured to achieve a triggering of the boot only in the event of the skier falling before, and not for triggering the torsion. Even in the context of ski touring, the use of a single heel becomes possible, which results in a lower cost and a lower weight of the binding device compared to the prior art. This promotes 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 relates to the nature of the system for mounting the mobile part 12 on the fixed part 11 of the stop 10. In the second embodiment, to constitute the system for mounting the mobile part 12 on the fixed part 11, l movable base 26 of the mobile part 12 is mounted in circular translation relative to the fixed base 27 of the fixed part 11 by means of two rods 28 parallel to one another arranged in the manner of a deformable parallelogram. Each link 28 comprises a first end 28a articulated on the fixed base 27 and a second end 28b, opposite the first end 28a, articulated on the mobile base 26. The articulation movement of the two links 28 relative to the mobile bases and fixed gives 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 elimination of the foot pedal 19 and the toggle mechanism used in the first embodiment. The lever 16 and its operating principle with respect to the blocking elements 25d, 25g and the jaws 13d, 13g are retained but the nature of its mounting on the rest of the movable part 12 is different. A return spring 32 permanently biases the lever 16 towards its blocking position in which the blocking elements 25d, 25g integral with the lever 16 prevent tilting of the jaws 13d, 13g, by their contact against the bearing surfaces 18d, 18g . Return spring 32 ( figure 21 ) is for example constituted by at least one torsion spring having at least one first tab linked 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 enable the lever 16 to be tilted towards its release position from the blocking position, for example when putting on shoes, it should be pressed on the actuating element 17 by hand, with a shoe or with his stick. Coming to occupy the release position, the lever 16 makes it possible to move 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 stopper 10 in its fitting configuration, the jaws being sufficiently open towards the outside of the stopper to allow the fitting of the shoe between the retaining elements 20d, 20g. It should therefore be specified that, unlike the operation conferred by the toggle mechanism in the first embodiment, the release position of the lever 16 in the second embodiment is an unstable position. The fitting operation is very easy to perform without significant effort to overcome because the user goes against the weak force of the return spring 32 biasing the lever 16. In the second embodiment, only the lever locking position 16 is a stable position, being continuously urged towards this position by the return spring 32, which can moreover be of any other nature than that described above as soon as 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 implemented in the first embodiment. As indicated previously, the stop 10 comprises at least one trigger spring 14. In the particular example illustrated, two such springs 14 are interposed between the mobile and fixed parts 12, 11 and urge the mobile part 12 in a determined rest position relative to the fixed part 11. The two trigger springs 14 are parallel and extend, in the second embodiment, along an axis oriented substantially in the longitudinal direction X of the stop 10. The two springs 14, integral with the movable part 12, stress longitudinally a piston 29 belonging to the movable part and movable in the longitudinal direction X relative to the movable base. The piston 29, arranged on the front side of the stop 10 along X while the triggering elements are arranged on the rear side of the stop along X, has a first convex bearing surface 30, in the form of a dome for example. The first bearing surface 30 is in permanent contact against 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 of 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 makes it possible to adjust the refocusing of the mobile part 12 of the stop 10 transversely as well as the shape of the release curve of the stop 10. The rest position of the mobile part 12 corresponds to the adopted position by the movable part 12 when the first bearing surface 30 is housed and centered transversely in the bottom of the cavity delimited by the second bearing surface 31. This is the position normally adopted outside of displacement situations t ransversal of the mobile part 12 and automatic release of the stop 10.

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

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

On the figure 23 , the fixed base 27 is absent to facilitate understanding of the assembly. The lug 21 integral with the fixed part 11 is in contact with the recess 22 carried by the lever 16 belonging to the movable 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 pivoting movement relative to the movable base 26.

Finally, the invention relates to the gliding board as such 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 supply of a shoe fixing solution which is simple, compact, economical and light,
• the provision of a shoe binding solution which guarantees optimal safety for the skier in the event of a fall, making it possible to comply with the ISO9462 alpine standard,
• the provision of a stop allowing a triggering in torsion associated with a heel piece configured to ensure a triggering only in forward fall,
• also allow compliance with the ISO13992 hiking standard,
• allows use in hiking, thanks to a possibility of pivoting the shoe upwards around the retaining elements 20d, 20g, in the case where the heel piece no longer retains the heel of the shoe,
• the provision of a stop having a low and constant shoeing and heaving effort regardless of the setting of the triggering effort 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 stop 10 described previously gives the lever 16 two distinct functions:

• the shoe-taking-off function,
• an additional torsional release function,
• a jaw blocking function active as long as a trigger is not necessary.

• 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 blocking 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 stop 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 tilting of the jaws 13d, 13g.

The passage of the locking elements from the first position to the second position and vice versa is effected by a displacement of the locking elements by pivoting relative to the movable part 12 along an axis directed in the transverse direction: the locking elements are mounted from articulated manner, in particular in rotation about this axis, relative to the movable part 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 triggering elements 21, 22 cooperate with the locking elements in such a way that the implementation of said movement of the movable part 12 relative to the fixed part 11 beyond the predetermined stroke causes the automatic passage of the blocking from their first position to their second position.

It also emerges from all of the above 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 biased by a second return spring independent of said first spring and urging the locking elements 25d, 25g towards a position in which they prohibit the pivoting of the jaws 13d, 13g and block the stop 10 in its closed configuration. In the first embodiment, said second return spring is formed by the shoe / shoe release spring 23. In the second embodiment, said second return spring is formed by return spring 32.

As indicated above, 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 pass from its blocking 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 œuvre 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 part 12, the transverse displacement of which takes place against a force of a first return spring, in particular formed by the trigger spring 14 recalling the movable part 12 towards a rest position,
• blocking 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 distinct from the first return spring,
• and trigger elements 21, 22 cooperating with the locking elements 25d, 25g in such a way that the implementation of said transverse movement beyond a predetermined stroke causes the automatic passage of the locking elements, by opposing by the action of the second return spring, from the first position to a second position in which the locking elements 25d, 25g allow the jaws 13d, 13g to tilt to allow the jaws 13d, 13g to open and release the shoe.

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

Claims (20)

1. End stop (10) for a binding device for securing a boot to a gliding board, comprising a fixed part (11) which is intended to be secured to the gliding board, and a mobile part (12) which is mounted on the fixed part with a possibility of relative movement (T) with at least one transverse component and on which two jaws (13d, 13g) are mounted so as to pivot about a substantially longitudinal axis (Ag, Ad), the end stop (10) comprising a lever (16) that is actuable from the outside of the end stop (10) and takes up a blocking position in which blocking elements (25d, 25g) that are integral with the lever (16) prevent the jaws (13d, 13g) from tilting so as to keep the end stop (10) in a closed configuration in which the jaws (13d, 13g) retain the boot, releasing elements (21, 22) engaging with the blocking elements (25d, 25g) such that the execution of said movement of the mobile part (12) beyond a predetermined travel with respect to the fixed part (11) causes the lever (16) to pass automatically, in particular from the blocking position, towards a freeing position which is different from the blocking position and in which the blocking elements (25d, 25g) allow the jaws (13d, 13g) to tilt, characterized in that these blocking elements (25d, 25g) are formed by lateral flanks of the lever (16) which, in the blocking position of the lever (16), bear against bearing surfaces (18d, 18g) that are integral with the jaws (13d, 13g), on their inner face.
2. End stop (10) according to Claim 1, characterized in that the system for mounting the mobile part (12) on the fixed part (11) is such that the sliding movement of the mobile part (12) with respect to the fixed part (11) takes place along a rectilinear path, which is in particular oriented substantially in the transverse direction (Y), or along a curvilinear path with at least one component mainly in the transverse direction (Y), said curvilinear path being in particular approximately or exactly circular, delimiting a portion of a circle, the centre of which is intended to be located close to the heel of the boot.
3. End stop (10) according to Claim 2, characterized in that the system for mounting the mobile part (12) on the fixed part (11) comprises guiding elements of the slide type that ensure that a mobile base (26) of the mobile part (12) is mounted on a fixed base (27) of the fixed part (11) so as to slide by translation.
4. End stop (10) according to Claim 2, characterized in that the system for mounting the mobile part (12) on the fixed part (11) comprises two mutually parallel links (28) that are arranged in the manner of a deformable parallelogram ensuring that a mobile base (26) of the mobile part (12) is mounted on a fixed base (27) of the fixed part (11) so as to move in circular translation.
5. End stop (10) according to one of Claims 1 to 4, characterized in that the blocking elements (25d, 25g) are mounted in an articulated manner, in particular a rotary manner, with respect to the mobile part (12) in order to change between a first position, which is taken up in the blocking position of the lever (16) and in which they block the jaws (13d, 13g) and the end stop (10) in its closed configuration, and a second position, different from the first position, which is taken up in the freeing position of the lever (16) and in which they allow the jaws (13d, 13g) to tilt, and in that the releasing elements (21, 22) engage with the blocking elements (25d, 25g) such that the execution of said movement of the mobile part (12) beyond the predetermined travel with respect to the fixed part (11) causes the blocking elements (25d, 25g) to pass automatically from their first position to their second position.
6. End stop (10) according to any one of Claims 1 to 5, characterized in that the lever (16) is mounted in an articulated manner on the mobile part (12).
7. End stop (10) according to any one of Claims 1 to 6, characterized in that the end stop comprises a toggle mechanism provided with a fitting/removal spring (23) that acts on the lever (16) and is configured such that the blocking position and the freeing position are stable positions at the ends of an overall tilting travel of the lever (16), said travel including an unstable intermediate position of the lever (16) corresponding to a hard point of inflection of the toggle.
8. End stop according to one of Claims 1 to 7, characterized in that the releasing elements (21, 22) comprise first and second bearing surfaces (22, 21), which are respectively integral with the mobile and fixed parts (12, 11), one in contact with the other, undergoing relative sliding one on the other during the execution of said movement of the mobile part (12), the first and second bearing surfaces being shaped such that this relative sliding causes the lever (16) to pass from its blocking position towards its freeing position.
9. End stop (10) according to Claim 8, characterized in that the first bearing surface (22) is carried by the blocking elements (25d, 25g) that are integral with the lever (16).
10. End stop (10) according to either of Claims 8 and 9, characterized in that one of the first and second bearing surfaces is formed by a protrusion (21) and the other of the first and second bearing surfaces is formed by a hollow (22) into which the protrusion (21) penetrates prior to said movement of the mobile part (12) and which is shaped such that the protrusion (21) moves progressively out of the hollow (22) during the relative sliding of the first and second bearing surfaces, such that the lever (16) passes from its blocking position towards its freeing position.
11. End stop (10) according to Claim 10, characterized in that the hollow (22) is integral with the lever (16) and the protrusion (21) is integral with the fixed part (11).
12. End stop (10) according to one of Claims 1 to 11, characterized in that the end stop comprises at least one releasing spring (14) which is interposed between the fixed and mobile parts (11, 12) and urges the mobile part (12) into a determined rest position with respect to the fixed part (11).
13. End stop (10) according to Claim 12, characterized in that it comprises a means (24) for setting the stiffness of the releasing spring (14).
14. End stop (10) according to either of Claims 12 and 13, characterized in that the blocking elements (25d, 25g) are acted upon by a return spring (23, 32) which is independent of the releasing spring (14) and urges the blocking elements (25d, 25g) towards a position, in particular said first position, in which they prevent the jaws (13d, 13g) from pivoting and block the end stop (10) in its closed configuration.
15. End stop (10) according to one of Claims 1 to 14, characterized in that the jaws (13d, 13g) are able to rotate on a mobile base (26) of the mobile part (12), the transverse movement of which takes place counter to a force of a first return spring (14), returning the mobile part (12) towards a rest position, in that the blocking elements (25d, 25g) take up a first position in which they prevent the jaws from pivoting under the effect of a second return spring (23, 32) different from the first return spring (14), and in that the releasing elements (21, 22) engage with the blocking elements (25d, 25g) such that the execution of said transverse movement beyond a predetermined travel causes the blocking elements (25d, 25g) to automatically pass, counter to the action of the second return spring (23, 32), from the first position towards a second position in which the blocking elements (25d, 25g) allow the jaws (13d, 13g) to pivot so as to allow the jaws (13d, 13g) to open and to free the boot.
16. End stop (10) according to Claim 15, characterized in that the system for mounting the mobile part (12) on the fixed part (11) is such that the sliding movement of the mobile part (12) with respect to the fixed part (11) takes place along a rectilinear path, which is in particular oriented substantially in the transverse direction (Y), or along a curvilinear path having at least one component mainly in the transverse direction (Y), said curvilinear path being in particular approximately or exactly circular, delimiting a portion of a circle, the centre of which is intended to be located close to the heel of the boot.
17. End stop (10) according to either of Claims 15 and 16, characterized in that the blocking elements (25d, 25g) are mounted in an articulated manner, in particular a rotary manner, with respect to the mobile part (12) such that the blocking elements (25d, 25g) pass from the first position to the second position and vice versa by the blocking elements (25d, 25g) pivoting with respect to the mobile part (12) about an axis directed in the transverse direction (Y).
18. End stop according to one of Claims 15 to 17, characterized in that the releasing elements (21, 22) comprise first and second bearing surfaces (22, 21), which are respectively integral with the mobile and fixed parts (12, 11), one in contact with the other, undergoing relative sliding one on the other during the execution of said movement of the mobile part (12), the first and second bearing surfaces being shaped such that this relative sliding causes the blocking elements to pass from their first position towards their second position.
19. Binding device for securing a boot to a gliding board, comprising an end stop (10) according to any one of the preceding claims, which is intended to secure a front part of the boot, and also a heel piece which is intended to secure a rear part of the boot to the gliding board, the heel piece being designed to release the boot only in the case of a forward fall of the skier, the boot being released from the binding device in the case of a twisting fall only by way of the end stop.
20. Gliding board, in particular touring ski, comprising an end stop (10) according to any one of Claims 1 to 18 and/or a binding device according to Claim 19.

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