EP3741436A1 - Binding device for fixing a boot onto a snowboard - Google Patents

Abstract

Fixing device (3) for fixing a boot (4) to a gliding board (2), comprising: - a base (10) intended to be fixed to a gliding board and to at least partially wrap a sole and sides side of a shoe, - at least one lever (201, 301) movable relative to the base, characterized in that the lever is able to cooperate with a retaining element (44A, 44B) connected to a shoe, the lever (201, 301) being movable between a first holding position (P1) and a second clamping position (P2), the lever being able to retain the boot in the base when it is in its first position, the lever being able to transmit a downward force on the retaining element when it is in its second position.

Description

Technical field of the invention

The invention relates to a binding device for attaching a boot to a gliding board, in particular to a board for gliding on snow, in particular to a snowboard. The invention also relates to a shoe intended to be attached to a gliding board. The invention finally relates to a binding system for snowboarding, comprising such a binding device and such a boot.

State of the prior art

The practice of snowboarding, or snowboarding, consists of descending snow-covered slopes by means of a gliding board to which the user's two shoes are attached. To fix a shoe, a fixing device is generally used comprising a support fixed to the gliding board and several flexible straps fixed to the support at their ends and passing over the shoe. The support, usually made of plastic, at least partially envelops the sole, back and sides of the shoe. The binding generally includes two straps, one of which goes over the instep and the other goes over the front of the shoe. These straps are used to firmly press the shoe to the bottom of the support. Each strap is made up of two parts able to cooperate together via a tightening means in order to obtain good support for the foot.

To attach a boot to the gliding board, the user must therefore generally position his foot at the bottom of the support of the binding and then successively tighten the straps of the binding. This operation is tedious and often requires the user to sit in the snow to put on the gliding board. However, this operation must be repeated many times during a day of snowboarding since the use of the ski lifts generally requires that at least one of the two feet be removed. The tightening obtained after each manipulation may be different. The user must therefore get used to snowboarding with a comfort that can be different between each tightening and loosening operation. In addition, the existing straps are made of flexible plastic and can break which can be particularly dangerous when the user is descending a ski slope at full speed.

We know thanks to the patent EP0885036 , bindings commonly known as "step-in", able to cooperate with a binding device integrated under the sole of the shoe. These bindings offer faster entry when the sole is not clogged with snow. However, when snow or ice sticks to the binding device under the sole, the putting on operation may become more difficult or even impossible. It is therefore often necessary to carefully clean the sole in order to secure the boot on the gliding board. In addition, such a binding system provides support for the foot through the sole and not through the top of the foot or the instep as in conventional binding systems and users do not appreciate the sensations. created by this type of solidarity. Indeed, the transmission of forces from the foot to the gliding board is less precise and the sensations perceived by the user are degraded. The comfort provided by such bindings can also be impaired by compression points due to the binding mechanism, arranged under the user's foot.

Presentation of the invention

The aim of the invention is to provide a binding system for attaching a boot to a gliding board overcoming the above drawbacks and improving the binding systems known from the prior art.

More specifically, a first object of the invention is a binding device that is practical to use and makes it possible to easily and quickly attach or release a boot from a gliding board.

A second object of the invention is a fixing device allowing optimum transmission of the impulses of a user to a gliding board in order to control its movement.

A third object of the invention is a comfortable fixing device for the user's foot.

A fourth object of the invention is an automatic binding device which can be used even when snow is liable to accumulate under the sole of a shoe.

Summary of the invention

• une embase destinée à être fixée à une planche de glisse et à envelopper au moins partiellement une semelle et des côtés latéraux d'une chaussure,
• au moins un levier mobile par rapport à l'embase,

le levier étant apte à coopérer avec un élément de retenue relié à une chaussure, le levier étant mobile entre une première position de maintien et une deuxième position de serrage, le levier étant apte à retenir la chaussure dans l'embase lorsqu'il est dans sa première position, le levier étant apte à transmettre un effort vers le bas sur l'élément de retenue lorsqu'il est dans sa deuxième position.The invention relates to a binding device for attaching a boot to a gliding board, the binding device comprising:

• a base intended to be fixed to a gliding board and to at least partially envelop a sole and the lateral sides of a shoe,
• at least one lever movable relative to the base,

the lever being able to cooperate with a retaining element connected to a shoe, the lever being movable between a first holding position and a second clamping position, the lever being able to retain the shoe in the base when it is in its first position, the lever being able to transmit a downward force on the retaining element when it is in its second position.

The lever may include a gripping element for moving the lever from its first position to its second position in the direction of tightening.

The lever can be arranged along a lateral side of the base, and the lever can be adapted to cooperate with a retaining element extending laterally from the boot.

The lever may comprise a first bearing surface capable of vertically retaining the lateral retaining element and the first bearing surface may be in the form of a cam.

The first bearing surface may comprise a first portion intended to bear against the retaining element when the lever is in its first position, the first bearing surface comprising a second portion intended to bear against the retaining element. when the lever is in its second position, the second portion being separate from the first portion.

The lever may be movable in rotation about an axis of rotation, the axis of rotation extending parallel to a transverse axis of the fixing device, the distance separating said first portion from the axis of rotation being strictly greater than the distance separating said second portion from the axis of rotation.

The lever may comprise an opening, an edge of the opening forming said first bearing surface.

The first bearing surface of the lever may comprise the shape of an arc of a circle eccentric with respect to the axis of rotation.

The first bearing surface of the lever may comprise a row of notches, each notch defining a stable clamping position of the lever.

The base may include a lateral side provided with a guide groove oriented and open towards the front and upwards.

The lever may include a second bearing surface forming a boot ramp, the second bearing surface being intended to cooperate with the retaining element to move the lever from an initial position to a third retracted position.

The fixing device may include a return means, the return means exerting a force on the lever tending to move it from its third retracted position to its initial position.

The lever may include a release handle, a downward force on the release handle tending to move the lever to its third retracted position.

The base may include a stop means positioned at the front of the base, the stop means being able to cooperate with a mating element of the boot.

The fixing device may comprise a first lever movable relative to the base and a second lever movable relative to the base, the first lever being able to cooperate with a first retaining element connected to a shoe, the second lever being able to cooperate with a second retaining element connected to a shoe, the first lever being movable between a first holding position and a second clamping position, the second lever being movable between a first position of maintenance and a second clamping position, the first lever and the second lever being able to retain the boot in the base when they are in their first position, the first lever and the second lever being able to transmit a downward force respectively on the first retaining element and on the second retaining element when they are in their second position.

The first lever may be integral with the second lever, and the first lever and the second lever may be movable in rotation about the same axis of rotation, said axis of rotation being oriented parallel to a transverse axis of the fixing device, said axis being arranged at the rear of a base of the base.

The invention also relates to a sports shoe comprising a slidably assembled strap, the strap enveloping an instep of the shoe, the strap comprising a first free end, extending from a first side of the neck. -foot, and a second free end, extending on the other side of the instep, the first end comprising a first lateral retaining element intended to cooperate with a first lever of a fixing device as defined previously and the second end comprising a second lateral retaining element intended to cooperate with a second lever of the binding device to tighten the boot against the binding device.

The first retaining element may extend transversely in an area of the shoe delimited by a rear end of the shoe, a lower edge of the shoe and a point of the shoe intended to be positioned at most approximately 20mm from a malleolus. internal of a user, and / or in the second retaining element may comprise transversely in a zone of the shoe delimited by a rear end of the shoe, a lower edge of the shoe and a point of the shoe intended to be positioned at most approximately 20mm from a user's external malleolus.

The invention also relates to a binding system comprising a binding device as defined above and a sports shoe as defined above.

Presentation of figures

• [Fig. 1] La figure 1 est une vue schématique d'un équipement pour la pratique du snowboard selon un mode de réalisation de l'invention.
• [Fig. 2] La figure 2 est une vue de côté d'une chaussure et d'un dispositif de fixation selon un premier mode de réalisation de l'invention, la chaussure s'apprêtant à être fixée au dispositif de fixation.
• [Fig. 3] La figure 3 est une vue en coupe de la chaussure et du dispositif de fixation selon le premier mode de réalisation, la coupe étant réalisée parallèlement à un plan dans lequel s'étend la sangle de la chaussure.
• [Fig. 4] La figure 4 est une vue en perspective du dispositif de fixation selon le premier mode de réalisation.
• [Fig. 5] La figure 5 est une vue de côté d'un levier du dispositif de fixation selon le premier mode de réalisation, du côté interne du levier.
• [Fig. 6] La figure 6 est une vue arrière du levier du dispositif de fixation selon le premier mode de réalisation.
• [Fig. 7] La figure 7 est une première vue en perspective du levier du dispositif de fixation selon le premier mode de réalisation.
• [Fig. 8] La figure 8 est une vue de côté de la chaussure et du dispositif de fixation selon le premier mode de réalisation, la chaussure étant retenue verticalement contre une embase du dispositif de fixation, le levier étant dans une première position, dite de maintien.
• [Fig. 9] La figure 9 est une vue de côté de la chaussure et du dispositif de fixation selon le premier mode de réalisation, la chaussure étant retenue verticalement et serrée contre l'embase, le levier étant dans une deuxième position, dite de serrage.
• [Fig. 10] La figure 10 est une vue de côté et en transparence de la chaussure et du dispositif de fixation selon le premier mode de réalisation, la chaussure étant en position déchaussée et s'apprêtant à être fixée au dispositif de fixation.
• [Fig. 11] La figure 11 est une vue de côté de la chaussure et du dispositif de fixation selon le premier mode de réalisation, l'avant de la chaussure étant engagé dans le dispositif de fixation.
• [Fig. 12] La figure 12 est une vue partielle, de côté et en transparence de la chaussure et d'un dispositif de fixation selon un deuxième mode de réalisation de l'invention, le levier étant dans la première position, dite de maintien.
• [Fig. 13] La figure 13 est une vue partielle, de côté et en transparence de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation, le levier étant dans une troisième position, dite escamotée.
• [Fig. 14] La figure 14 est une vue arrière de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation.
• [Fig. 15] La figure 15 est une vue de côté et en transparence de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation, la chaussure étant retenue verticalement et le levier étant dans sa première position, dite de maintien.
• [Fig. 16] La figure 16 est une vue en perspective de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation dans la configuration de la figure 15.
• [Fig. 17] La figure 17 est une vue en perspective de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation, le levier étant dans sa deuxième position, dite de serrage.
• [Fig. 18] La figure 18 est une vue en perspective de la chaussure et du dispositif de fixation selon le deuxième mode de réalisation, le levier étant dans sa troisième position, dite escamotée.
• [Fig. 19] La figure 19 est une en vue en perspective d'un dispositif de fixation selon une première variante de réalisation de l'invention.
• [Fig. 20] La figure 20 est une vue de côté et de la chaussure et d'un dispositif de fixation selon une deuxième variante de réalisation de l'invention.

These objects, characteristics and advantages of the present invention will be explained in detail in the following description of a particular embodiment made without limitation in relation to the accompanying figures, among which:

• [ Fig. 1 ] The figure 1 is a schematic view of equipment for snowboarding according to one embodiment of the invention.
• [ Fig. 2 ] The figure 2 is a side view of a shoe and of a binding device according to a first embodiment of the invention, the boot preparing to be attached to the binding device.
• [ Fig. 3 ] The figure 3 is a sectional view of the boot and of the binding device according to the first embodiment, the section being made parallel to a plane in which the strap of the boot extends.
• [ Fig. 4 ] The figure 4 is a perspective view of the fixing device according to the first embodiment.
• [ Fig. 5 ] The figure 5 is a side view of a lever of the fixing device according to the first embodiment, from the internal side of the lever.
• [ Fig. 6 ] The figure 6 is a rear view of the lever of the fixing device according to the first embodiment.
• [ Fig. 7 ] The figure 7 is a first perspective view of the lever of the fixing device according to the first embodiment.
• [ Fig. 8 ] The figure 8 is a side view of the boot and of the binding device according to the first embodiment, the boot being retained vertically against a base of the fixing device, the lever being in a first position, called the holding position.
• [ Fig. 9 ] The figure 9 is a side view of the boot and of the binding device according to the first embodiment, the boot being held vertically and clamped against the base, the lever being in a second position, called the clamping position.
• [ Fig. 10 ] The figure 10 is a side view and in transparency of the boot and of the binding device according to the first embodiment, the boot being in the open position and preparing to be attached to the binding device.
• [ Fig. 11 ] The figure 11 is a side view of the boot and of the binding device according to the first embodiment, the front of the boot being engaged in the binding device.
• [ Fig. 12 ] The figure 12 is a partial view, from the side and in transparency, of the boot and of a binding device according to a second embodiment of the invention, the lever being in the first position, called the holding position.
• [ Fig. 13 ] The figure 13 is a partial view, from the side and in transparency, of the boot and of the binding device according to the second embodiment, the lever being in a third position, called retracted.
• [ Fig. 14 ] The figure 14 is a rear view of the boot and of the binding device according to the second embodiment.
• [ Fig. 15 ] The figure 15 is a side view and in transparency of the boot and of the binding device according to the second embodiment, the boot being held vertically and the lever being in its first position, called the holding position.
• [ Fig. 16 ] The figure 16 is a perspective view of the boot and the binding device according to the second embodiment in the configuration of the figure 15 .
• [ Fig. 17 ] The figure 17 is a perspective view of the boot and of the binding device according to the second embodiment, the lever being in its second position, called the tightening position.
• [ Fig. 18 ] The figure 18 is a perspective view of the boot and of the binding device according to the second embodiment, the lever being in its third position, called retracted.
• [ Fig. 19 ] The figure 19 is a perspective view of a fixing device according to a first variant embodiment of the invention.
• [ Fig. 20 ] The figure 20 is a side view of the boot and of a binding device according to a second variant embodiment of the invention.

detailed description

The figure 1 schematically illustrates an equipment 1 for the practice of snowboarding according to one embodiment of the invention. The equipment 1 comprises a gliding board 2, two fixing devices 3 according to one embodiment of the invention and a pair of shoes 4 according to one embodiment of the invention. The gliding board has an elongated shape, extends generally in a plane and has raised front and rear ends. A first face of the gliding board or lower face is intended to come into contact with a snow-covered surface while the two fixing devices are fixed on the other face of the gliding board, that is to say on the upper face. The two fixing devices serve to fix the two shoes 4 of a user to the gliding board 2. The two fixing devices and therefore the two shoes are fixed substantially perpendicular to the axis along which the gliding board extends. . As a variant and most commonly, the binding devices can be attached differently: for example, they can be attached so that the binding devices and therefore the two shoes form an angle other than a right angle with the axis in which the board extends. It is also possible for the user to adjust the orientation of each binding device on the board. Alternatively, the binding devices could be attached side by side as for a monoski or one behind the other as for a skwal board. According to a still different variant, the two fixing devices could each be fixed to a separate gliding board as for skiing. The equipment could include only one binding device according to the invention, the other boot could then be attached to the gliding board via a binding device according to the state of the art. Hereinafter, we will attempt to describe a particular binding device cooperating with a shoe. This shoe can be either a left shoe or a right shoe.

In this document, the longitudinal axis X of the binding device is defined as the axis in which the user's foot extends from the heel towards the toes when the user's foot is in place in the device. fixation. The terms "front" and "rear" are defined in relation to the longitudinal axis X, the rear designating the heel side and the front designating the toe side. The transverse Y axis denotes an axis perpendicular to the X axis and oriented from left to right according to the user's point of view. It is assumed for the purposes of the description that the device is mounted on a gliding board which rests on a horizontal ground. The X axis and the Y axis therefore define a horizontal plane. The Z axis is the vertical axis, perpendicular to the X and Y axes. The Z axis is oriented from bottom to top. The X, Y and Z axes form an orthogonal coordinate system.

With reference to the figure 2 , shoe 4 is a high top shoe. It wraps around the user's foot, ankle and lower leg. In particular, the shoe 4 envelops the instep of the user, that is to say the upper part of the foot above the ankle joint. The instep 41 of the shoe designates the part of the shoe covering the instep of the user, that is to say a part of the anatomy of curved shape, positioned in the area of the ankle joint between the foot and the lower leg. The shoe 4 comprises a strap 42, or thong or even "strap", slidably assembled with respect to the rest of the shoe and surrounding from left to right the instep 41 of the shoe. In particular, the strap is sliding relative to an upper of the shoe, that is to say an outer part of the shoe which covers the foot. This strap 42 covers the instep 41 of the shoe. It is linked and integral with the shoe. However, it would not be departing from the scope of the invention if this strap were attached to a boot initially not provided with a strap and secured to this boot for example by a harness supporting the strap.

The figure 3 shows a sectional view of the boot 4 and of the binding device 3 along a plane PC1 parallel to a median plane of the strap. This PC1 plan is notably indicated on the figure 8 . The strap 42 may be generally U-shaped, so as to wrap the instep 41 well. It includes a first free end 43A extending from a first side of the instep to a lateral side of the instep. the shoe and a second free end 43B extending on the other side of the instep, on the other lateral side of the shoe. The ends 43A, 43B can be substantially positioned at the level of the internal and external malleoli of the user's foot, these ends being substantially oriented towards a lower rear corner of the shoe, at the interface between the sole and the vertical part along of the heel. The plane PC1 forms with the horizontal plane an angle A1 which may be for example between 30 ° and 70 °, in particular between 40 ° and 60 °, preferably about 50 °.

The first end 43A is provided with a first lateral retaining element 44A. The second end 43B is provided with a second lateral retaining element 44B. The two side retainers 44A, 44B are therefore substantially positioned in a zone ZR (shown in figure 10 ) of the shoe delimited by the rear end of the shoe, the lower edge of the shoe and two points of the shoe positioned respectively substantially vis-à-vis the internal malleolus and the external malleolus of the user's foot or possibly advanced by at most 20mm in relation to the malleoli. In other words, the zone ZR extends laterally substantially on either side of the heel of the shoe, in a zone extending in the rear third of the shoe, defined with respect to the total length of the sole of the shoe. . More particularly, the first lateral retaining element 44A and the second lateral retaining element 44B may be in the form of a lug extending transversely to the strap 42 from one side of the boot, towards the outside of the boot. The lug may in particular have a cylindrical shape, the axis of revolution of which is substantially parallel to the Y axis. As a variant, the lateral retaining element could have a different shape, for example a mushroom shape. The strap 42 is able to slide parallel to the direction in which it extends. The strap is forced to move at least according to this sliding movement. For example, its sliding can be guided by loops 45 covering it locally, for example two in number and each positioned on the lateral sides of the boot. Thus, the strap can rise slightly upward and forward when the shoe is not secured to the binding device so as not to interfere with walking, but can slide downward and backward when the strap is secured to the device. of fixation. The strap 42 is then tightened by this fixing device so as to come to rest against the upper part of the boot, at the instep. In addition, these loops prevent the strap from twisting on itself. The loops can be elements attached to the shoe or be formed by the upper of the shoe. It will not be departing from the scope of the invention if other means for sliding and guiding the strap on or in the boot are chosen. In As a variant, the boot could be designed differently: for example, the lateral retaining elements 44A, 44B could not be attached directly to a strap but directly to the boot and then be connected to the strap by means of a cable, these lateral retaining elements also exhibiting a sliding movement relative to the boot.

The translational sliding of the strap 42 can allow the boot to have a slight rolling movement from left to right around the X axis, when the boot is secured to the binding device. In addition, the strap 42 may also have an additional degree of freedom of movement, for example a front-to-back rotation or vice versa to facilitate the rolling movement of the boot secured to the binding device.

According to an alternative embodiment not shown, the retaining elements 44A, 44B could not be attached to a strap of the shoe but directly to an upper of the shoe, to a sole of the shoe or even to any other part of the shoe. , and in particular on a reinforcement surrounding the heel. The retaining elements would then be movable relative to the rest of the boot only within the limits of the flexibility of the materials used to make the boot. The boot could possibly include reinforcements to limit the movement of the retaining elements. According to this variant embodiment, the retaining elements may have a shape and / or a location substantially identical to the shape and / or location of the retaining elements integral with the strap presented above.

The fixing device 3 is in particular illustrated in perspective on the figure 4 . It comprises a base 10, a first lever 201 and a second lever 301, separate from the first lever. The first lever 201 is able to cooperate with the first lateral retaining element 44A and the second lever 301 is able to cooperate with the second lateral retaining element 44B to tighten the boot against the base, in particular to tighten the strap 42 on the instep 41 of the shoe. The first lever 201 forms a hooking means for the first retaining element 44A and the second lever 301 forms a hooking means for the second retaining element 44B.

The base 10 is fixed to the gliding board, for example by means of screws aimed at the thickness of the gliding board, or by any other rapid locking-unlocking means known from the prior art. In particular, the base 10 or more precisely the lower plate of the base or base 11 may be provided with a circular opening (not shown), intended to receive a circular disc for retaining the base 10 on the board. slips. The base 10 can also in a known manner be easily positioned angularly with respect to the board. The base 10 at least partially envelops a sole, a rear part and the lateral sides of the boot 4. For this purpose, the base 10 comprises a base 11 intended to receive the support of the lower face of the sole of the shoe. shoe 4. The base extends parallel to the gliding board and is positioned resting on the latter. The base 10 also comprises two lateral flanks 12A, 12B or lateral sides 12A, 12B extending on either side of the base 11, each in a plane parallel to the X and Z axes. The lateral flanks make it possible to block the side laterally. shoe. The two lateral flanks are spaced from one another so as to be able to accommodate the sole of the boot. The lateral flanks may be of sufficient height to rest on the sides of the sole of the boot. In particular, they can have an increasing height from the front to the rear. They are connected to one another at the rear by an arch 13 in the form of an arc of a circle raised relative to the base 11. The arch 13 is intended to accommodate the rear of the boot and can be positioned substantially at the height of an Achilles tendon of the user. The arch 13 forms a rear stop for the boot. As a variant, the binding device could comprise any other type of rear stop means to prevent rearward displacement of the boot. A rear opening is defined at the rear of the base by a lower contour of the hoop, the two lateral sides and the base. When the boot is in place in the binding device, the heel of the boot may possibly come out through this rear opening. The arch 13 can be surmounted by a vertical reinforcement or spoiler (not shown), extending at the rear of the boot substantially along the Z axis, allowing the boot to find support towards the rear of the shoe. base.

The first lever 201 is arranged along a lateral side (in this case the right lateral side) of the base 10 and towards the rear of the base. On the figure 4 , it is observed that the first lever 201 is arranged at the rear of the lateral flank 12A of the base and on the outer side thereof. The lateral flank 12A is therefore interposed between the lever 201 and the boot 4. Likewise, the second lever 301 is arranged symmetrically towards the rear and along an opposite lateral side of the base, that is to say. say along the lateral flank 12B of the base (in this case the left lateral side). Preferably, the first lever 201 and the second lever 301 can be positioned in a rear half of the binding device so as to be able to cooperate with the retaining elements 44A, 44B themselves arranged in the zone ZR of the boot.

The two levers 201, 301 are movable between an initial position P0, a first position P1 and a second position P2. In the different variants illustrated, the initial position P0 for putting on or ready to put on and the first so-called support position P1 are identical but they could also be different. In particular, the lever 201 and the lever 301 are movable in rotation about the same axis of rotation 14. The axis of rotation 14 is oriented parallel to the transverse axis Y. The axis of rotation 14 is arranged at the rear of the base 11 of the 'base, in the lower part of the base, so as to pass below the sole of the boot when the latter is supported on the base 11. The axis of rotation 14 can be guided in rotation by means of openings forming bearings in the base 10. The lever 201 is integral with the lever 301 via the axis of rotation 14. More precisely, the lever 201 is integral with the axis of rotation 14 via a first end 14A of the axis of rotation 14 and the lever 301 is integral with the axis of rotation 14 via a second end 14B of the axis of rotation 14. The axis of rotation 14 therefore forms a connecting means between the two levers 201, 301. Thus, a movement of the lever 201 causes an identical movement of the lever 301 and vice versa. The user can therefore choose to manipulate either the lever 201 or the lever 301 depending on the movement that he deems the most convenient to perform.

Alternatively, the two levers could be independent of each other, i.e. they could be moved between their different positions independently of each other and they would be movable around two distinct transverse axes, oriented along the Y axis and mounted on each of the side blanks 12A, 12B of the base. If the two levers are independent, each foot is then retained to the board by two independent hooking means.

As observable on the figure 4 , the binding device can be symmetrical along a plane of symmetry PS oriented parallel to the longitudinal axis X and to the vertical axis Z. Thus, the same binding device can be used indifferently to attach a left shoe or to attach a right shoe to the gliding board. In other embodiments not shown, the fixing device may not be symmetrical with respect to a median plane and have a shape suitable for a left shoe and another shape suitable for the right foot. We endeavor to describe subsequently only the first lever 201, the second lever 301 being symmetrical to the first lever. To simplify the description, the first lever 201 will simply be referred to as "lever" and the first lateral retaining element 44A will simply be referred to as "retaining element".

Lever 201 is illustrated in more detail on figures 5 to 7 . Advantageously, the lever can be a one-piece element. It can be made of metal to give it strong and constant strength and rigidity over time, but other rigid materials such as fiber-laden plastics could also be used. It extends generally in a plane perpendicular to the Y axis. The lever 201 is movably mounted on the base by the axis of rotation 14. The axis of rotation 14 is fixed to the lever 201 while being engaged in an opening circular 202, located at a lower edge of the lever 201. This circular opening 202 receives the end 14A of the axis of rotation 14. The lever 201 also comprises an opening 203, one of the edges of which forms a first surface support 204 or cam surface, adapted to cooperate with the retaining element 44A. The opening 203 is an opening passing through the thickness of the lever 201 along the transverse axis Y. The edge forming the first bearing surface 204 is an upper edge of the opening 203 of the lever 201. In particular, the element retainer 44A is retained vertically upward when it bears against a portion of the bearing surface 204 forming a cam. This bearing surface 204 is perpendicular to a plane comprising the X axis and the Z axis. The position of the retaining element 44A along the bearing surface 204 is visible from the outside, which allows in particular to easily and quickly check the correct position of the retaining element relative to the bearing surface 204. In addition, the opening 203 facilitates the evacuation of snow or ice that could accumulate at the level of the support surface 204.

The bearing surface 204 is crenellated, that is to say it comprises a row of notches 205A, 205B, 205C, 205D, 205E positioned side by side. Each notch 205A, 205B, 205C, 205D, 205E comprises an arcuate shape, able to match the cylindrical shape of the retaining element 44A. Thus, each notch can define a stable holding and / or clamping position of the lever 201, that is to say that the forces exerted by the retaining element on the lever cannot cause a rotation of the lever causing the lever to rotate. 'opening of the lever in the direction of release D. More precisely, the chosen inclination of the bearing surface 204 which forms a cam surface and its positioning relative to the axis of rotation 14 of the lever 201 allows, when an upward vertical force is applied by the retaining element of the boot when snowboarding on snow, to create a force which tends to turn the lever 201 backwards, that is to say - say in the direction of closing and tightening. According to the illustrated embodiment, the first bearing surface 204 comprises five notches but this number could be different.

We can define two distinct portions 206, 207 of the bearing surface 204. The first portion 206 can be defined as the portion of the bearing surface corresponding to a first notch 205A and the second portion 207 can be defined as the portion of the bearing surface corresponding to a fourth notch 205D. As a variant, the second portion could correspond to the notches 205B, 205C or 205E as well.

The first position P1, said to hold the lever 201, is in particular illustrated on the figure 8 and the second position P2, called lever clamping position, is illustrated in particular on figure 9 . A rearward rotation of the lever allows it to pass from its first position to its second position.

The rotation of the lever in the tightening direction is shown in particular by an arrow S on the figure 9 . The retaining element 44A of the boot bears against the first portion 206 of the first bearing surface 204 when the lever is in its first position P1 and it bears against the second portion 207 when the lever is in its second position P2. When the lever is pivoted from the first position P1 to the second position P2, the bearing zone of the retaining element on the first bearing surface gradually passes from the first portion 206 to the second portion 207, in passing in particular through the notches 205B and 205C.

As shown on the figure 5 , the distance D1 separating the first portion 206 from the axis of rotation 14 is strictly greater than the distance D2 separating the second portion 207 from the axis of rotation of the lever 201. From the first notch of the first portion to the last notch of the second portion, the distances separating these notches from the axis of rotation of the lever 201 decrease, then making it possible to bring the retaining element of the boot closer to the base 11 of the base when the lever is tilted in the tightening direction S , rearward. When the lever is in its first position, called the holding position P1, the retaining element 44A is generally in the first upper notch 206, the lever 201 retains the boot 4 and blocks its movement vertically upwards. This first position P1 is therefore a holding position, that is to say that the shoe is trapped in the binding device but is not yet tight against the base. The sole of the shoe may still have play with the base 11 or at least be only slightly compressed against the base 11. The strap exerts little or no pressure on the instep of the shoe. 'user. This configuration is particularly comfortable but does not have sufficient tightening of the boot by the binding device to allow good guidance of the gliding board on the snow.

When the lever moves from the first position, called the holding position P1 to the second position, called the clamping position P2, the lever 201 and in particular the cam surface 204 exerts a downward and rearward force on the locking element. retainer 44A causing the downward movement, in the direction of the base 11 of the base 10, of this retention element 44A. The retaining element moves in a direction substantially perpendicular to the plane in which extends the gliding board and / or the base 11. The retaining element 44A is itself guided moreover in a guide groove 15 of the base, inclined backwards, as explained below, this retaining element finally moves downwards and backwards during the tightening, during the rearward rotation of the lever 201. Thus, the retaining element 44A approaches the axis of rotation 14. The strap 42 stretches parallel to its sliding direction, that is to say backwards and downwards. The movement of the retaining element therefore causes the strap to be tightened on the instep of the boot towards the base. The shoe is pressed against the base and firmly held thanks to the strap stretched over the instep 41. Advantageously, the lever may be able to move the retaining element downwards, in the vertical direction, a distance greater than or equal to 10 mm, in particular approximately 20 mm when the lever is moved from its first position, called holding P1 to its second position, called clamping P2, the retaining element then approaching the face top of the base and the underside of the sole of the shoe. In a preferred example, when the lever is in its first position, called the holding position P1, the retaining element is approximately 70mm from the lower face of the sole and therefore from the upper face of the base 10. Then, when the lever is in its second position P2, called clamping, the retaining element is then approximately 50mm from the underside of the sole and from the upper face of the base. The central axis of the retainer 44A is then located approximately at a distance of between between 50 and 85mm from the heel, preferably between 70 to 80mm from the heel of the shoe.

As a note, in the particular case where the retaining elements are not attached to a strap of the boot but to any other part such as the upper of the boot, the rearward rotation of the lever results in the transmission of a force towards the low on the rod. This force is transmitted to the sole of the boot which is then compressed against the base 11 of the binding device.

The passage from the holding position P1 to the clamping position P2 is carried out manually by the user by manually actuating the lever. This transition is obtained by moving the lever backwards, in the tightening direction S, as shown in figure 9 . This manual action is in particular carried out by grasping a gripping element 216 for tightening the lever 201. The gripping element 216 forms a handle which can be grasped with the hand. The gripping element 216 is located in the upper front part of the lever. Other actuation means could be considered, such as for example means provided with electronic assistance. Furthermore, in the illustrated embodiments, the gripping element 216 actuating the clamping is integral with the lever 201 carrying the cam surface 204, but it will not be outside the scope of the invention if the gripping element 216 was a separate element of the lever 201, such as for example a second lever mounted on the base and actuating the lever 201 carrying the cam and driving it in the direction of tightening. The two levers 201 and 301 being coupled together by the axis of rotation 14, the manual actuation of the lever 201 by the gripping element 216 therefore automatically causes the simultaneous rotation of the lever 301, and vice versa, in the tightening direction S .

Several tightening positions P2 can be reached depending on the desired tightening on the boot. The more the lever 201, which carries the retaining and clamping cam surface, is tilted backwards, the greater the clamping, i.e. the retaining element of the shoe descends downwards. and approaches the upper surface of the base. Thus, the strap 42 is tighter and tighter against the upper part of the boot in the instep area, the sole then being pressed against the base 11 of the binding element.

According to a second embodiment of the invention, illustrated on figures 12 to 18 , the first bearing surface of the lever does not include a succession of notches but a smooth profile in the form of a circular arc. This circular arc shape is eccentric with respect to the axis of rotation 14 so that distinct portions of the first bearing surface are positioned at different distances from the axis of rotation 14. The surface of support therefore forms a cam on which the retaining element 44A rests. The rotation of the lever from its first position to its second position then causes a gradual and smooth displacement of the retaining element backwards and downwards, causing the strap 42 to be tightened. the arc of a circle forming the first bearing surface is then chosen so that the tension force of the strap does not cause undesired rotation of the lever. The position of the cam surface of the lever 201, 301 is located substantially above the axis of rotation of the lever. It will not be departing from the scope of the invention if the lever carrying the cam surface is rotatably mounted on one of the sides of the base in the upper part and the cam surface is then positioned below the axis lever rotation.

With reference to the figure 10 , the base 10 further comprises two guide grooves 15, or guide slots, emerging, in other words open, upwards, each positioned on each side flank 12A, 12B, of the base, in the rear part of the fixing device. Each guide groove 15 is rectilinear and inclined forward and upward. The guide groove makes it possible to guide the retaining element 44A when the boot is placed in the base, or against the base and imposes a direction of movement backwards and downwards on the strap 42 The guide groove 15 also constrains the movement of the retaining element 44A parallel to the axis in which the guide groove extends when the lever is moved between its first position, called the holding position P1, and its second position, known as P2 clamping. The strap is therefore stretched in the direction of the guide groove 15. It is also avoided that the lever tightening operation, carried out by means of the gripping element 216, transmits forces on the strap perpendicular to its sliding direction. The guide groove 15 is in the form of a cutout made in a rear zone of the lateral flank 12A of the base, and opening out at the level of the upper edge of this lateral flank. The guide groove can be inclined relative to the longitudinal axis X by an angle A2 substantially close to the angle A1 formed by the strap 42 with the longitudinal axis X. The angle A2 can therefore be for example between 30 ° and 70 °, especially between 40 ° and 60 °, preferably about 50 °. The guide groove is long enough so that even in the maximum tightening position, the retaining element 44A or lug does not come into contact with the bottom of the guide groove. In another embodiment not shown, the guide groove 15 could no longer be rectilinear but be curvilinear and in particular be in the form of a circular arc, the center of which would be a front attachment point of the boot 17,18 which will be described later. Preferably, the groove 15 can be dimensioned so as to have a width barely greater than the width of the retaining element, which improves its guiding function.

When the cam-forming lever is in its initial boot position P0, the lever 201 is juxtaposed with the guide groove 15, so that the retaining element cannot be engaged there without movement of the lever 201. In the first so-called position. holding P1 or in the second position, called clamping P2 or in any intermediate position between the first position P1 and the second position P2, the lever is also juxtaposed to the guide groove 15, the retaining element then being engaged in the guide groove 15. Thus the lever 201 forming a cam laterally covers at least part of the guide groove 15 (that is to say it covers at least a part of the guide groove in a transverse projection of the lever 201 on the side wall 12A carrying the guide groove 15). Indeed, the retaining element 44A of the strap 42 extends in the transverse direction beyond the lateral flank of the base and comes into interference with an upper edge of the lever when the latter is in its first position.

To allow the engagement, or in other words the putting on, of the boot in the binding device or the release of the boot from the binding device, the lever is movable towards a third position P3, called retracted position, distinct from the initial position P0 , the first position P1 and the second position P2. This retracted position P3 is particularly illustrated on the figures 13 and 18 . In this position, the lever is offset with respect to the guide groove 15, that is to say that it no longer laterally covers this guide groove 15 and the retaining element can be freely engaged or disengaged therein, without interference with the lever. The boot is therefore able to be engaged against the base to allow the boot to be put on or released from the base, to allow the boot to be taken off, when the lever is in its third position P3, called retracted. As a note, the figures 13 and 18 show a lever equipped with a first bearing surface 204 or cam surface according to the second embodiment of the invention. The same principle applies of course to a lever whose first bearing surface or cam surface includes notches.

The third so-called retracted position P3 of the lever corresponds to a position of the lever pivoted forward from the initial position P0. The initial position of the lever P0 is the position in which the lever is located prior to putting on the boot. According to the embodiment presented, the initial position of the lever P0 is identical to the holding position P1 of the lever. The initial position P0 differs from the holding position P1 by the fact that the lateral retaining element 44A or lug is not engaged in the groove 15 and is therefore not resting against the bearing surface 204 in initial position P0, while it is in the maintaining position P1. In the initial position P0, the boot is still outside the binding device. With respect to the holding position P1 or with respect to the initial position P0, the retracted position P3 is obtained by a rotation of the lever in the direction of rotation of release D, as indicated in figure 13 . Thus, the lever systematically passes through the initial position P0 or through the first position, called holding position P1 when it is manipulated between the second position, called clamping position P2 and the third position, called retracted position P3. Thus, the cam-forming lever is movable in two opposite directions of rotation, one in the tightening direction S and the other in the release direction D. In the proposed embodiment, the first position, known as the holding position P1 also corresponds to the initial position P0 where the binding device is ready to be put on. It will not be outside the scope of the invention if the initial position P0 is different from the holding position P1, in this case the initial position P0 of the lever would preferably be positioned between the retracted position P3 and the holding position P1.

In order to allow rotation of the lever from the initial position P0 to the third position P3, the fixing device being unshipped, the lever 201 forming a cam comprises a second bearing surface 208 or ramp boot, arranged on an upper edge of the lever. The second bearing surface 208 is intended to cooperate with the retaining element 44A of the boot in order to move the lever towards its third position and to allow automatic entry of the boot into the binding device. More particularly, as illustrated on figure 11 , when the boot approaches the binding device, the retaining element 44A comes into contact with the second bearing surface 208 and exerts on the lever a force F1 oriented downward. The point of contact of the retaining element 44A on the bearing surface is positioned in front of the axis of rotation 14. The force F1 therefore causes a forward rotation of the lever, in the direction of release D As the lever pivots forward and the heel of the boot approaches the base of the base, the retainer 44A slides along the second bearing surface 208 or boot ramp, until 'at its rear end 209. The lever is thus tilted sufficiently forward so that the retaining element 44A can enter the guide groove 15 of the base. The lever is then free to return to its first position, called holding position P1, due to the elastic return exerted by a return spring on the lever, the retaining element then being blocked upwards by the cam surface 204 of the lever 201. The return of the lever to this first position is not hampered by the retaining element 44A which protrudes from the outer lateral side of the base, because the lever has a rear opening 210, in particular clearly visible on the figures 6 or 14 . The rear opening 210 is formed by a hollow formed in the thickness of the lever carrying the cam, on its internal face, facing the lateral flank of the base 10. This rear opening of the lever 201 allows the retaining element engaged in the guide groove 15 to slide behind the lever 201 and then come into contact with the first bearing surface 204 or cam surface when the lever has resumed its first holding position P1 and the cam maintains the retainer 44A. The retaining element 44A is therefore trapped in the guide groove 15 and retained vertically by the cam surface or first bearing surface 204. Thus, the boot is then fitted and retained vertically in the binding device. This rear opening 210 is limited by a first arm 211 connecting an upper part of the lever (carrying the first bearing surface 204 and the second bearing surface 208) to a lower part of the lever (bearing in particular the circular opening 202) . The first arm 211 is positioned towards the rear side of the lever. A second arm 215, on the front side of the lever, also connects the upper part of the lever to its lower part. These two arms frame the opening 203 and give the lever greater rigidity. As a variant, one of these two arms 211, 215 could be omitted, for example the arm 211 which is thinner than the arm 215. Thus, the rear opening 210 has a dimension along the transverse axis Y at least equal. to the length of protrusion of the retaining element 44A of the boot beyond the guide groove 15 in the direction Y towards the exterior of the base.

As it appears on the figures 12 and 13 , the fixing device 3 comprises a return means 50 exerting a force on the lever carrying the cam surface and tending to move this lever from its third position, said retracted P3 towards its initial position P0, being a stable position. The return means 50 is in particular in the form of a helical spring 51 but as a variant it could be replaced by any other equivalent return means. The spring 51 is positioned in a housing 212 of the lever. The housing 212 has substantially the shape of an arc of a circle centered on the circular opening 202. The spring 51 is mounted in compression between one end 213 of the housing and a stop 16 integral with the base. When the lever is in its third position, called retracted P3, the spring 51 is in a state of maximum compression. When the lever is in its initial position P0, the spring 51 is in a state of minimal compression. Thus at rest, the lever naturally returns from the third position, called retracted P3 to the position initial P0. When the boot is engaged against the binding device, as soon as the retaining element 44A escapes from the second bearing surface 208 and descends into the guide groove 15, that is to say as soon as it is no longer resting on this bearing surface 208, the return means causes the rearward rotation of the lever, which causes the retaining element to pass through the rear opening 210 and then its setting. bearing against the first bearing surface 204, the lever 201 then taking the first holding position P1.

At rest, when the boot is not engaged in the binding, the lever 201 does not tilt backwards due to the shape and counter-shape practiced respectively on the lever 201 on the internal face and on the side wall of the base on the outside, forming a stopper. When putting on the shoe, the force on putting it on is sufficient to come out of this stopper.

To allow the boot to be released from the binding device, the lever also includes a pedal or release handle 214, to manually tilt the lever to its third position, called retracted P3. This release handle 214 could also be tilted with the foot. The release handle is in the form of a protuberance integral with the body of the lever and extending outward from the fixing device, parallel to the transverse axis Y. It may have a substantially rectangular shape. As shown on the figure 12 , a force F2 oriented downward on the release handle tends to move the lever to its third position, called retracted P3. The release handle 214 can be actuated by the user to release his shoe from the binding device. As a variant, the user could also press on another part of the lever, for example on the second bearing surface 208, to cause it to pivot forward, towards its third position P3. So, when the lever is in the retracted position P3, in the most forward position, the guide groove 15 is completely released and the retaining element 44A of the boot can move upwards and completely come out of the guide groove 15 to allow the boot to be removed from the binding device.

In the illustrated embodiments, the release handle is integral with the lever carrying the cam surface, but it would not be departing from the scope of the invention if this release handle were formed by a separate element of the lever carrying the cam which would cooperate with this lever to drive it in rotation. Furthermore, the gripping element 216 and the release handle 214 or pedal have been presented as two distinct elements. As a variant, these two elements could form one and the same part, for example in the form of a handle extending parallel to the transverse axis Y. The user could then pull upward on this handle to rotate the lever. in the direction of tightening S, or on the contrary, it could push down on this handle to rotate the lever in the direction of release D.

With reference to figures 10 and 15 , the base also comprises a stop means 17 positioned at the front of the base which constitutes a front attachment means of the boot. The stop means 17 is able to cooperate with a conjugate element of the boot. The stop means makes it possible to correctly position the boot during the putting on operation and to retain the front of the boot in the vertical direction of the base, along the Z axis. More precisely, according to the embodiment presented , the stop means 17 is a lug 18 extending transversely towards the inside of the base from a lateral flank of the base. This lug, of generally cylindrical shape, is in particular clearly visible on the figure 4 . The lug is able to cooperate with a notch 47 made in a lateral edge of the sole of the boot. The notch 47 may have an angled profile including a vertically extending engagement portion 47A and a longitudinally extending holding portion 47B. When the lug is in place in the holding part, it can only be detached from the notch according to a very specific movement of the foot. In order to engage the boot in the binding device, the user can first of all advance his boot with the front inclined downwards. He then makes the lug 18 coincide with the notch 47 until the lug reaches the holding part 47B. He can then rotate his foot around a transverse axis AT1 passing through the lug 18 so as to bring his heel towards the base 11. With such a movement, the retaining element 44A located in the rear part of the boot comes into contact against the second bearing surface 208 substantially always at the same point, to allow the boot to be put on in the binding device.

In other embodiments of the invention, the elements of the lug 18 and notch 47 type could be reversed, i.e. the lug could be positioned on the lateral sides of the boot, in its area. front and the notch could be positioned in the front side walls of the fastener. Any other means of attachment of the hook type or form and counter-form could be envisaged to achieve the attachment of the front part of the boot with the binding device, this attachment allowing at least vertical retention of the front part of the boot. shoe. As a note, when the stop means 17 cooperates with the lug 18, the movement of the boot relative to the binding device is guided. In particular, the shoe describes a rotational movement whose axis of rotation corresponds to the axis AT1. Thus, it could be possible to consider the elimination of the guide groove 15 or its widening since the guidance is provided by the cooperation of the stop means 17 with the lug 18.

The figure 19 illustrates an alternative embodiment of the base 11 of the base 10 particularly suited to the tightening device obtained by the cooperation of the strap with the levers described above. The base 11 comprises a middle part 111 and two side parts 112A, 112B extending transversely on either side of the middle part 111. The middle part 111 is more rigid than the two side parts 112A, 112B. For example, the two side parts 112A, 112B can be made of foam or any other equivalent material, covering the base 11 of the base 10, capable of being elastically deformed by a support of the sole of the shoe and therefore the user's foot to provide comfort and / or cushioning. The middle part 111 can be made of plastic. It can form a one-piece assembly with the rest of the base, for example obtained by plastic injection. When the two side parts 112A, 112B are not compressed, they can extend substantially to the same height as the middle part along the vertical axis Z. Advantageously, this height is greater than the height of the axis of rotation 14 this which prevents the sole of the shoe from coming into contact with this axis of rotation and disturbing the rotation of the lever.

As is clearly visible on the figure 19 , the middle part and the two side parts can be interrupted between the front and the rear, in particular to make room for an adjustment mechanism (not shown) for the orientation of the binding device relative to the gliding board around the vertical axis Z. Outside this central zone, the middle part 11 and the two side parts 112A, 112B occupy the entire width of the base between the two side flanks 12A and 12B.

Thus, the presence of side parts 112A, 112B of lower rigidity allows the boot to pivot slightly around a longitudinal axis, in a rolling movement, while remaining generally tight. against the base. Indeed, when the shoe is held and tightened in the binding device, the strap 42 has a fixed position relative to the binding device, due to the attachment with the binding device of the lateral retaining elements 44A, 44B mounted on the strap 42. It is then the rest of the boot, excluding the strap which becomes movable relative to the strap and to the fixing device, in particular movable in rotation, causing a rolling movement around the X axis. This is made possible due to the sliding capacity of the strap 42 relative to the upper of the boot. The user can thus freely modify or adjust his support on the gliding board, while keeping the foot tight. It can thus control its trajectory even more effectively. In particular, the user finds the same sensations that he can have with a conventional binding where the boot is retained only by two straps or two straps fixed to the binding device and independent of the boot, and in particular the binding device according to the invention allows the boot to regain a rolling movement relative to the base, as in the conventional bindings mentioned above.

Thanks to the invention, the user can easily engage his boot on the gliding board so that the gliding board is held at his foot and cannot escape. This operation does not require the use of the user's hands since it suffices for him to engage the lever by bringing his foot closer to the boot ramp as described above. Prior to putting on the boot, the strap is integral only with the boot. After having engaged the boot in the binding device, the strap is secured to the base. Then, a single gesture on the gripping element 216 allows the user to adjust the tightness of his foot against the gliding board. Once the lever is tight, the strap is secured to the fixing device. Depending on the compromise between ease of use and precision, the user will be able to pull more or less on the lever carrying the cam surface, that is to say more or at least switch it from the first position, called the holding position P1, towards the second position, called the clamping position P2. When the first bearing surface is provided with notches of the order of a few units, he can easily identify a level of tightening that suits him by locating on which notch the retaining element of the boot, linked to the strap. He obtains a tightening of his shoe from above, that is to say that the strap exerts a force on the instep of the user to properly press the shoe at the bottom of the binding device. The rigidity of the materials constituting the body of the shoe therefore does not impact the quality of the tightening obtained. It is thus possible to obtain at the same time an automatic fitting system, a particularly comfortable shoe and a precise and efficient clamping of the shoe against the gliding board.

When snow has accumulated under the sole of the boot or on the binding device, the user can still successfully secure their boot to the gliding board without having to remove the accumulated snow. For this, the user manipulates the lever so as to reach a given resistance. Finally, the force produced to manipulate the lever is directly correlated with the force applied by the strap on the instep of the shoe. By habit, the user can therefore easily find the level of tightening that suits him. Later, if the snow interposed between the boot and the binding device were to melt or settle, thus modifying the tightening of the strap, the user can easily adjust the tightening of the lever.

As a note, in the particular case where the retaining elements 44A, 44B are fixed directly to the upper, to the sole or to any other element of the boot, the tightening of the levers makes it possible to more or less compress the sole against the board of slips. A more or less significant compression of the sole makes it possible to adjust the sensations felt by the user at the level of the soles of the feet. In addition, when the elements retainers are attached to a rod of sufficiently flexible material, the rod can be deformed under the effect of the force exerted by each of the levers and a certain tightening of the foot can be obtained. The tightening thus obtained can be modulated by adapting the rigidity of the rod and the position of the retaining elements on the rod. The advantage of being able to simply attach the boot to the binding device without having to remove the snow accumulated between the sole and the binding device is obtained even though the retaining elements are integral with the upper, the sole or any other element of the shoe.

Then to remove the shoe from the binding device or take it off, a single gesture is enough since it suffices to press on the release handle of the lever carrying the cam to rotate it forward, for example by using the handle. release 214. This support can be done manually or for example with the other foot, if the latter is released from its own fixing device. Due to the connection between the two right and left levers, 201 and 301 by means of the link bar 14, a single action on one of the levers makes it possible to simultaneously open the two levers to allow the release of the boot. shoe.

Thus, the lever is made up of a single piece combining the functions of automatic entry, of maintaining the boot loose against the gliding board, of tightening the boot against the gliding board and finally of interface with the user. since the latter directly manipulates the lever for tightening and for dislodging and not another element which would be connected to the lever. According to the embodiment of the invention described, the lever is articulated in rotation on the binding device and comprises a cam surface, a boot ramp, a gripping zone or gripping element allowing the boot to be clamped against the boot. fixing device, in particular the tightening of the strap linked to the shoe, against the instep, and a release handle or release pedal allowing the boot to be released from the binding device.

The lever illustrated in the various embodiments is optimized and simple since it combines all the elements mentioned above which allow all the functions mentioned above. However, it will not be departing from the scope of the invention if the main lever only carries the cam surface and the boot ramp and if the gripping zone and / or the gripping handle are separate elements of this main lever, mounted on the base and which cooperate with this main lever respectively to perform the tightening and / or the release.

Different variant embodiments of the invention will now be described.

As shown on the figure 20 , the lever 201 'previously described could be reversed. The passage from the first position to the second position would not be obtained by pivoting the lever backwards but forwards. Likewise, the passage from the first position to the third position would not be obtained by a pivoting of the lever forwards but backwards. By analogy with the main embodiment described above, the lever would also include a first bearing surface 204 ', a second bearing surface 208', a gripping element 216 'for clamping the lever towards its clamping position, a release handle 214 ′ to tilt the lever towards its retracted position. The shape of the first bearing surface 204 'or cam surface and of the second bearing surface 208' or boot ramp is also adapted to take account of this reverse kinematics.

According to another variant not shown, the fixing device could only include a single lever located at the rear of the fixing device. This lever would include a lever movable around an axis of rotation oriented longitudinally along the X axis, this lever comprising a first bearing surface or cam surface, a second bearing surface or a boot ramp and two boot zones. gripping, one allowing the lever to be actuated in the tightening direction and the other allowing the lever to be actuated in the release direction. The shoe would then further comprise a strap covering the instep of the shoe, the rear ends of which would be interconnected by a link, itself provided with a retaining element located in the rear zone of the shoe and intended to cooperate with the lever and in particular with the cam surface of the lever. This retaining element, by cooperating with the lever, would make it possible to tighten the strap against the instep of the boot towards the base when the lever is moved from its first position, called the holding position, to its second position, called the tightening by action on the gripping clamping element. According to this variant, the vertical rear wall 13 of the base would be provided with a guide groove or substantially vertical slot, emerging and open upwards, intended to receive and guide the retaining element.

As a note, when the fixing device is provided with two levers synchronized by an axis of rotation, as has been described, one of the two levers could be simplified and for example, one of the two levers could then not include the release handle 214.

• de proposer un dispositif de fixation d'une chaussure à chaussage rapide et automatique, qui peut être chaussé sans action manuelle,
• de proposer un dispositif de fixation qui peut être utilisé même lorsqu'il est encombré de neige,
• de proposer une chaussure comportant éventuellement une sangle se déplaçant en coulissement par rapport à celle-ci, le coulissement permettant de serrer la sangle sur le cou-de-pied de la chaussure, lorsque la chaussure est déjà solidarisée à la fixation par action de l'utilisateur sur un levier de préhension du dispositif de fixation qui déplace la came et la sangle dans la direction du serrage en déplaçant l'élément de retenue lié à la sangle,
• d'offrir la possibilité à l'utilisateur d'avoir une position dite de maintien, de confort où son pied n'est pas comprimé et où la chaussure n'est pas serrée par la sangle et une position dite de serrage distincte où le pied est bien maintenu, c'est-à-dire que la sangle est serrée contre le cou-de-pied et le guidage de la planche de glisse est alors performant.

The invention therefore has the following advantages:

• to provide a fast and automatic shoe fastening device, which can be put on without manual action,
• to provide a fastening device that can be used even when it is congested with snow,
• to propose a shoe optionally comprising a strap moving in sliding relative to the latter, the sliding allowing the strap to be tightened on the instep of the shoe, when the shoe is already secured to the binding by the action of the user on a gripping lever of the fastening device which moves the cam and the strap in the direction of tightening by moving the retaining element connected to the strap,
• offer the user the possibility of having a so-called support position, of comfort where his foot is not compressed and where the shoe is not tightened by the strap and a so-called separate clamping position where the foot is well maintained, that is to say that the strap is tight against the instep and the guiding of the gliding board is then efficient.

Claims (17)

Fixing device (3) for fixing a boot (4) to a gliding board (2), comprising: - a base (10) intended to be fixed to a gliding board and to at least partially wrap a sole and the lateral sides of a boot, - at least one lever (201, 301) movable relative to the base, characterized in that the lever is able to cooperate with a retaining element (44A, 44B) connected to a shoe, the lever (201, 301) being movable between a first holding position (P1) and a second position (P2) clamping, the lever being able to retain the boot in the base when it is in its first position, the lever being able to transmit a downward force on the retaining element when it is in its second position. Fixing device (3) according to the preceding claim, characterized in that the lever (201, 301) comprises a gripping element (216) for moving the lever from its first position (P1) to its second position (P2) in the direction of tightening (S). Fixing device (3) according to one of the preceding claims, characterized in that the lever is arranged along a lateral side (12A, 12B) of the base (10), and in that the lever (201 , 301) is able to cooperate with a retaining element (44A, 44B) extending laterally from the boot. Fixing device (3) according to one of the preceding claims, characterized in that the lever (201) comprises a first bearing surface (204) capable of vertically retaining the lateral retaining element (44A), the first surface bearing being in the form of a cam and / or the first bearing surface comprising a first portion (206) intended to bear against the retaining element when the lever is in its first position (P1), the first bearing surface comprising a second portion (207) intended to take bearing against the retaining element when the lever is in its second position (P2), the second portion (207) being separate from the first portion (206). Fixing device (3) according to the preceding claim, characterized in that the lever (201) is movable in rotation about an axis of rotation (14), the axis of rotation extending parallel to a transverse axis (Y ) of the fixing device, the distance (D1) separating said first portion (206) from the axis of rotation (14) being strictly greater than the distance (D2) separating said second portion (207) from the axis of rotation. Fixing device according to one of claims 4 or 5, characterized in that the lever (201, 301) comprises an opening (203), one edge of the opening forming said first bearing surface (204). Fixing device (3) according to claim 5 or 6, characterized in that the first bearing surface (204) of the lever (201) comprises the shape of an arc of a circle eccentric with respect to the axis of rotation (14) ,
and or
in that the first bearing surface (204) of the lever (201) comprises a row of notches (205A, 205B, 205C, 205D, 205E), each notch defining a stable clamping position of the lever. Fixing device (3) according to one of the preceding claims, characterized in that the base (10) comprises a lateral side (12A, 12B) provided with a guide groove (15) oriented and open towards the front and up. Fastening device (3) according to one of the preceding claims, characterized in that the lever (201) comprises a second bearing surface (208) forming a boot ramp, the second bearing surface being intended to cooperate with the retainer (44A) for moving the lever from an initial position (P0) to a third retracted position (P3). Fixing device (3) according to the preceding claim, characterized in that it comprises a return means (50), the return means exerting a force on the lever (201) tending to move it from its third retracted position (P3 ) towards its initial position (P0). Fixing device (3) according to one of claims 8 or 9, characterized in that the lever comprises a release handle (214), a force directed downwards on the release handle tending to move the lever towards its third retracted position (P3). Fixing device (3) according to one of the preceding claims, characterized in that the base (10) comprises a stop means (17) positioned at the front of the base, the stop means being able to cooperate with a conjugate element (47) of the shoe. Fixing device (3) according to one of the preceding claims, characterized in that it comprises a first lever (201) movable relative to the base and a second lever (301) movable relative to the base, the first lever being able to cooperate with a first retaining element (44A) connected to a shoe, the second lever being able to cooperate with a second retaining element (44B) connected to a shoe, the first lever ( 201) being movable between a first holding position (P1) and a second clamping position (P2), the second lever (301) being movable between a first holding position (P1) and a second clamping position (P2), the first lever and the second lever being able to retain the boot in the base when they are in their first position, the first lever and the second lever being able to transmit a downward force respectively on the first retaining element and on the second retainer when they are in their second position. Fixing device (3) according to the preceding claim, characterized in that the first lever (201) is integral with the second lever (301), and in that the first lever and the second lever are movable in rotation around the same axis of rotation (14), said axis of rotation being oriented parallel to a transverse axis (Y) of the fixing device, said axis being arranged at the rear of a base (11) of the base (10). Sports shoe (4), characterized in that it comprises a slidably assembled strap (42), the strap enveloping an instep (41) of the shoe, the strap comprising a free first end (43A), s 'extending from a first side of the instep, and a second free end (43B) extending to the other side of the instep, the first end including a first retainer (44A) side intended to cooperate with a first lever (201) of a fixing device according to one of the preceding claims and the second end comprising a second lateral retainer (44B) intended to cooperate with a second lever (301) of the binding device to tighten the boot against the binding device. Sports shoe (4) according to the preceding claim, characterized in that the first retaining element (44A) extends transversely in a zone (ZR) of the shoe delimited by a rear end of the shoe, a lower edge of the shoe and a point of the shoe intended to be positioned at most approximately 20mm from an internal malleolus of a user,
and / or in that the second retaining element (44B) extends transversely in an area of the boot delimited by a rear end of the boot, a lower edge of the boot and a point of the boot intended to be positioned at the more about 20mm from a user's external malleolus. Fixing system characterized in that it comprises: - a fixing device (3) according to one of claims 1 to 14, and - a sports shoe (4) according to one of claims 15 or 16.

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