FR3096273A1 - Binding device for attaching a shoe to a sliding board - Google Patents

Abstract

Fixing device for fixing a shoe to a gliding board Fixing device (3) for fixing a shoe (4) to a gliding board (2), comprising: - a base (10) intended to be fixed to a slides and at least partially envelops a sole, a rear part and the lateral sides of a shoe, - at least one attachment means (20, 30) movable relative to the base, characterized in that the means of hook is adapted to cooperate with a retaining element (44A, 44B) connected to a strap of the shoe, the hooking means comprising a lever (201, 301) movable between a first holding position (P1) and a second clamping position (P2), the lever being capable of retaining the boot in the base when it is in its first position, the lever being capable of transmitting a downward force onto the strap when it is in its second position . Figure for abstract: Figure 4

Description

Description Title of the invention: Fixing device for fixing a shoe to a gliding board Technical field

The invention relates to a fixing device for fixing a shoe to a gliding board, in particular to a snow gliding board, 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 equipment for the practice of snowboarding comprising such a binding device and such a boot.

State of the prior art

[0002] 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 fixed.

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 above the shoe.

The support, generally made of plastic, at least partially envelops the sole, pannier and sides of the shoe.

The binding usually 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 press the shoe firmly against the bottom of the support.

Each strap consists of two parts capable of cooperating together via a tightening means in order to obtain good support for the foot.

[0003] To attach a shoe 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 down in the snow to put on the gliding board.

This operation must however be repeated many times during a day of snowboarding since the use of ski lifts generally requires that at least one of the two feet be barefoot.

The tightening obtained after each manipulation may be different.

The user must therefore get used to practicing the snowboard with a comfort which may be different between each tightening and loosening operation.

Moreover, the existing straps are made of flexible plastic and can break, which can be particularly dangerous when the user descends a ski slope at full speed.

[0004] Thanks to patent EP0885036, bindings commonly referred to as "step-in" are known, capable of cooperating with a binding device integrated under the sole of the shoe.

These bindings offer faster entry when the sole is not cluttered with snow.

However, when snow or ice clings to the 2 fixing device under the sole, the fitting operation can. become more difficult or even impossible.

It is therefore often necessary to carefully clean the sole to be able to fix the shoe on the gliding board.

In addition, such a fastening system provides support for the foot via the sole and not via the top of the foot or the instep as with conventional fastening systems and. users do not appreciate the sensations created by this type of connection.

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 foot of the user.

Presentation of the invention

The object of the invention is to provide a dc fixing system for fixing a boot to a gliding board remedying the above drawbacks and improving the fixing systems known from the prior art.

[0006] More specifically, a first object of the invention is a practical fixing device to use and making it possible to fix or release easily and quickly a shoe from a gliding board.

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

[0008] A third object of [the invention is a comfortable binding device for the user's foot.

[0009] A fourth object of the invention is an automatic binding device that can be used even when snow is liable to accumulate under the sole of a shoe.

Summary of the invention 100101 The invention relates to a fixing device for fixing a boot to a gliding board, the fixing device comprising: - a base intended to be fixed to a gliding board and to wrap at least partially a sole, a rear part and lateral sides of a shoe, - at least one attachment means movable with respect to the base, the attachment means being capable of cooperating with a retaining element connected to a strap the shoe, the attachment means comprising a lever movable between a first holding position and a second clamping position, the lever being capable of retaining the shoe in the base when it is in its first position, the lever being capable to transmit a force downwards on the strap when it is in its second position. 3

[0011] The lever may comprise a gripping element for moving the lever from its first position to its second position in the tightening direction.

[0012] The attachment means may be arranged along a lateral side of the base, and the attachment means may be capable of cooperating with a lateral retaining element fixed to the strap of the shoe.

[0013] The lever may comprise a first bearing surface able to retain the lateral retaining element vertically, the first bearing surface being in the form of a cam, and/or the first bearing surface comprising 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 distinct from the first portion.

[0014] The lever can be rotatable around 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.

[0015] The first bearing surface of the lever may comprise an arcuate shape eccentric with respect to the axis of rotation, and/or 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 forwards and upwards.

[0017] The lever may comprise a second support surface forming a ramp, the second support surface being intended to cooperate with the retaining element to move the lever from an initial position to a third retracted position.

[0018] The attachment means may comprise 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.

[0019] The lever may comprise a release handle, a downward effort on the release handle tending to move the lever to its third retracted position.

[0020] The base may include abutment means positioned at the front of the base, the abutment means being capable of cooperating with a mating element of the boot.

[0021] The abutment means may be a lug extending transversely towards the inside of the base from a lateral side of the base, the lug being capable of cooperating with a notch made in a lateral edge of a sole of the shoe.

[0022] The base may comprise a base intended to receive the support of the sole of the shoe, the base comprising a middle part and two lateral parts extending transversely on either side of the middle part, the part middle part being more rigid than the two lateral parts, in particular the two lateral parts being made of foam.

[0023] The fixing device may comprise a first attachment means movable relative to the base and a second attachment means movable relative to the base, the first attachment means being capable of cooperating with a first retaining element connected to a strap of the shoe, the second attachment means being capable of cooperating with a second retaining element connected to a strap of the shoe, the first attachment means comprising a first lever movable between a first position holding position and a second clamping position, the second attachment means comprising a second lever movable between a first holding position and a second clamping position, the first lever and the second lever being suitable for retaining 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 onto the strap when they are in their second position.

The lever of the first attachment means can be integral with the lever of the second attachment means, and the lever of the first attachment means and the lever of the second attachment means can be rotatable around a 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.

[0025] The invention also relates to a shoe adapted to be fixed to a binding device as defined above, the shoe comprising a strap that can slide with respect to the shoe.

[0026] The strap can wrap around an instep of the shoe, the strap comprising a first end extending from one side of the instep, the first end being connected to a retaining element intended to cooperate with a means of hooking the binding device, to tighten the shoe against the binding device.

[0027] The shoe may comprise a sliding assembled strap, the strap enveloping an instep of the shoe, the strap comprising a first end, extending from a first side of the instep, and a second end, extending from the other side of the instep, the first end comprising a first lateral retaining element intended to cooperate with a first attachment means of the binding device, the second end comprising a second lateral retaining element intended to cooperate with a second attachment means of the binding device to tighten the shoe against the binding device.

100281 The retaining element may comprise a lug extending transversely with respect to the side of the boot.

[0029] The invention also relates to a binding system comprising: - a binding device as defined above, and - a boot as defined above.

The invention also relates to equipment for snowboarding comprising a gliding board and at least one attachment device as defined above, in particular two attachment devices as defined above.

Presentation of figures

These objects, characteristics and advantages of the present invention will be set out in detail in the following description of a particular embodiment given on a non-limiting basis in relation to the attached figures, among which:

Figure 1 is a schematic view of equipment for snowboarding according to one embodiment of the invention.

[0033] [fig.2] Figure 2 is a side view of a shoe and a binding device according to a first embodiment of the invention, the shoe about to be attached to the binding device .

[0034] [fig.3] Figure 3 is a sectional view of the shoe and the binding device according to the first embodiment, the section being made parallel to a plane in which extends the strap of the shoe.

[0035] [fig.4] Figure 4 is a perspective view of the fixing device according to the first embodiment.

[0036] [fig.5] Figure 5 is a side view of a lever of the fixing device according to the first embodiment, the inner side of the lever.

[0037] [fig.6] Figure 6 is a rear view of the lever of the fixing device according to the first embodiment.

Figure 7 is a first perspective view of the lever of the fixing device according to the first embodiment.

[0039] [fig.8] Figure 8 is a side view of the shoe and the binding device according to the first embodiment, the shoe being held vertically against a base of the binding device, the lever being in a first position, called maintenance.

[0040] [fig.9] Figure 9 is a side view of the shoe and the binding device according to the first embodiment, the shoe being held vertically and tight against the base, the lever being in a second position , called tightening.

[0041] [fig.10] Figure 10 is a side view and in transparency of the shoe and the binding device according to the first embodiment, the shoe being in 6 barefoot position and preparing to be fixed to the device of fixation.

[0042] [fig.1 1] Figure 11 is a side view of the shoe and the binding device according to the first embodiment, the front of the shoe being engaged in the binding device.

[0043] [fig.12] Figure 12 is a partial view, from the side and in transparency of the shoe and of a fastening device according to a second embodiment of the invention, the lever being in the first position, called maintenance.

[0044] [fig.13] Figure 13 is a partial view, side and in transparency of the shoe and the binding device according to the second embodiment, the lever being in a third position, called retracted.

[0045] [fig.14] Figure 14 is a rear view of the shoe and the binding device according to the second embodiment dc.

[0046] [fig.15] Figure 15 is a side view and transparency of the shoe and the binding device according to the second embodiment, the shoe being retained vertically and the lever being in its first position, called maintenance.

[0047] [fig.16] Figure 16 is a perspective view of the shoe and the binding device according to the second embodiment in the configuration of Figure 16.

[0048] [fig.17] Figure 17 is a perspective view of the shoe and the binding device according to the second embodiment, the lever being in its second position, called clamping.

[0049] [fig.18] Figure 18 is a perspective view of the shoe and the binding device according to the second embodiment, the lever being in its third position, called retracted.

[0050] [fig.19] Figure 19 is a perspective view of a fixing device according to a first embodiment of the invention.

[0051] [fig.20] Figure 20 is a side view and the shoe and a binding device according to a second embodiment of the invention.

Detailed description [00521 Figure 1 schematically illustrates equipment 1 for the practice of snowboarding according to one embodiment of the invention.

The equipment 1 comprises a sliding board 2, two binding 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, generally extends 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 fastening devices are fixed on the other face of the gliding board, that is to say on the upper side.

The two fixing devices are used to fix the two shoes 47 of a user to the gliding board 2.

The two fastening devices and therefore the two boots are fixed substantially perpendicular to the axis along which the gliding board extends.

As a variant and in the most common way, the binding devices can be fixed differently: for example, they can be fixed so that the binding devices and therefore the two shoes form an angle different from 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 bindings could be attached side-by-side as for a monoski or one behind the other as for a skwal board.

According to yet another variant, the two binding devices could each be fixed to a separate gliding board, as for skiing.

The equipment could comprise only one fixing device according to the invention, the other shoe could then be fixed to the gliding board via a fixing device according to the state of the art.

Thereafter, we endeavor 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 to the toes when the user's foot is in place in the fixing device.

The terms "front" and "rear" are defined in relation to the longitudinal axis X, the rear denoting the side of the heel and the front, the side of the toes.

The transverse Y axis designates 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 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 frame.

[0054] Referring to Figure 2, the shoe 4 is a high 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.

The shoe 4 comprises a strap 42, or strap, assembled to slide relative to the shoe and surrounding from left to right the instep 41 of the shoe.

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 shoe initially not provided with a strap and secured to this shoe, for example by a harness supporting the strap.

[0055] Figure 3 shows a sectional view of the shoe 4 and the binding device 8 3 along a plane PC1 parallel to a median plane of the strap.

This plane PC1 is notably indicated in figure 8.

The strap 42 can generally have a U-shape, so as to wrap the instep 41 well.

It comprises a first end 43A extending from a first side of the instep on a lateral side of the shoe and a second end 43B extending from the other side of the instep, on the other lateral side of the shoe.

The ends 43A, 43B can be positioned substantially at the level of the internal and external malleolus 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 from the heel.

The plane PC1 forms with the horizontal plane an angle Al which can be comprised for example between 30' and 70', in particular between 40' and 60', preferably approximately 50'.

The first end 43A is provided with a first lateral retaining element 44A.

The second end 43B is provided with a second lateral dc retaining element 44B.

More particularly the first lateral retaining element 44A and the second lateral retaining element 44B can take the form of a lug extending transversely to the strap 42 from one side of the shoe, towards the outside of the shoe.

The lug may in particular have a cylindrical shape, the axis of revolution of which is substantially parallel to the axis Y.

As a variant, the lateral retaining element could have a different shape such as for example a mushroom shape.

Strap 42 is able to slide parallel to the direction in which it extends.

The strap is constrained 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 shoe.

Thus, the strap can rise slightly upwards and forwards when the shoe is not secured to the fastening device so as not to interfere with walking, but can slide downwards and rearwards when the strap is secured to the device. of fixation.

The strap 42 is then tightened by this fastening device so as to come and press against the upper part of the shoe, at the level of 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 shoe are chosen.

As a variant, the shoe could be designed differently: for example, the lateral retaining elements 44A, 44B could not be fixed directly to a strap but directly to the shoe and then be connected to the strap by means of a cable, these lateral retaining elements also having a sliding movement relative to the shoe.

The sliding in translation of the strap 42 can allow the shoe to have a slight rolling movement from left to right around the X axis, when the shoe is secured to the binding device.

In addition, the strap 42 can also have an additional degree of freedom of movement, for example a rotation from front to back or vice versa to facilitate the rolling movement of the boot secured to the binding device.

The fixing device 3 is particularly illustrated in perspective in Figure 4.11 comprises a base 10, a first attachment means 20 and a second attachment means 30, separate from the first attachment means.

The first attachment means 20 is capable of cooperating with the first lateral retaining element 44A and the second attachment means 30 is capable of cooperating with the second lateral retaining element 44B to tighten the strap 42 on the neck-of- foot 41 of the shoe.

The base 10 is fixed to the gliding board, for example by means of screws screwed into the thickness of the gliding board, or by any other quick 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 can be provided with a circular opening (not shown), intended to receive a circular retaining disk of the base 10 on the board of slip.

The base 10 can also, in 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 shoe 4.

To this end, the base 10 comprises a base 11 intended to receive the support of the lower face of the sole of the shoe 4.

The base extends parallel to the gliding board and is positioned resting thereon.

The base 10 also comprises two lateral flanks 12A, 12B or lateral sides 12A, 12B extending on either side of the base ii, each in a plane parallel to the axes X and Z.

The lateral sides allow the shoe to be blocked laterally.

The two lateral flanks are spaced from each other so as to accommodate the sole of the shoe.

The lateral flanks may have a sufficient height to rest on the sides of the sole of the shoe.

In particular, they may have an increasing height from the front to the rear.

They are connected to each other at the rear by a hoop 13 in the form of an arc of a circle raised with respect to the base 11.

The hoop 13 can be positioned substantially at the height of an Achilles tendon of the user.

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 shoe is in place in the binding device, the heel of the shoe can possibly come out through this rear opening.

The hoop 13 can be surmounted by a vertical reinforcement or spoiler (not shown), extending to the rear of the shoe substantially along the Z axis, allowing the shoe to find support towards the rear of the base.

The first attachment means 20 is arranged along a lateral side (in this case the right lateral side) of the base 10 and towards the rear of the base.

In Figure 4, it is observed that the first hooking means 20 is arranged at the rear of the side flank 12A of the base and on the outside thereof.

The lateral flank 12A is therefore interposed between the attachment means 20 and the shoe 4.

Similarly, the second attachment means 30 is arranged symmetrically towards the rear and along an opposite lateral side of the base, that is to say along the lateral side 12B of the base (in species the left lateral side).

The two attachment means 20 and 30 each comprise a lever 201, 301 movable between an initial position PO, a first position P1 and a second position P2.

In the different variants illustrated, the initial position PO of fitting or ready to fit and the first so-called holding position P1 are identical but they could also be different.

In particular, the lever 201 of the first attachment means 20 and the lever 301 of the second attachment means 30 are rotatable around 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 shoe when the latter is resting on the base. 11.

The axis of rotation 14 can be guided in rotation thanks to openings forming bearings in the base 10.

Lever 201 is integral with lever 301 via axis of rotation 14.

More specifically, 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 turn 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 he deems the most convenient to perform.

Alternatively, the two levers could be independent of each other, that is to say they could be moved between their different positions independently of each other and they would be movable around two separate 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 on the board by two independent attachment means.

As can be seen in FIG. 4, the fixing 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 fixing device can be used either to fix a left shoe or to fix a right shoe to the gliding board.

In other embodiments not shown, the binding device may not be symmetrical with respect to a median plane and have a shape adapted for a left shoe and another shape adapted for the right foot.

We endeavor to describe below only the first attachment means 20, the second attachment means 30 being symmetrical to the first attachment means.

To simplify the description, the first attachment means 20 will be simply called "attachment means" and the first lateral retaining element 44A will be simply called "retaining element".

The lever 201 is illustrated in more detail in Figures 5 to 7.

Advantageously, the lever can be made of metal to give it substantial and constant solidity and rigidity over time, but other rigid materials such as fiber-filled plastics could also be used.

It extends globally 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 by being engaged in a circular opening 202, located at the level of a lower edge of the lever 201.

This circular opening 202 receives the end 14A of the axis of rotation 14.

The axis of rotation 14 also comprises an opening 203, one of the edges of which forms a first bearing surface 204 or cam surface, capable of cooperating with the retaining element 44A.

In particular, the retaining element 44A is retained vertically upwards when it bears against a part 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.

In addition, the support 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 position for maintaining and/or stable clamping of the lever 201, that is to say that the forces exerted by the retaining element on the lever cannot cause rotation of the lever causing the opening of the lever in the direction of release D.

More precisely, the chosen inclination of the support surface 204 which forms a cam surface and its positioning relative to the axis of rotation 24 of the lever 201 allows, when a vertical upward force is applied by the retaining element of the shoe when snowboarding on snow, to create a force which tends to cause the lever 201 to rotate backwards, that is to say in the direction of closing and tightening .

According to the illustrated embodiment, the first support surface 204 comprises five notches but this number could be different.

[0065] Two distinct portions 206, 207 of the support surface 204 can be defined.

The first portion 206 can be defined as the portion of the support surface corresponding to a first notch 205A and the second portion 207 can be defined as the portion of the support surface corresponding to a fourth notch 205D.

As a variant, the second portion could equally well correspond to notches 205B, 205C or 205E.

The first position PI, called holding the lever 201 is illustrated in particular in Figure 8 and the second position P2, called the clamping position of the lever is illustrated in particular in 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 represented in particular by an arrow S in figure 9.

The retaining element 44A of the shoe 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 passes progressively from the first portion 206 to the second portion 207, in passing in particular through notches 205B and 205C.

As indicated in 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 shoe closer to the base 11 of the base when the lever is tilted in the direction of tightening S. backwards.

When the lever is in its first position, called PI holding, the retaining element 44A is generally in the first upper notch 206, the lever 201 retains the boot 4 and blocks its vertical upward movement.

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 user's instep.

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.

[0068] When the lever passes from the first position, called PI holding position to the second position, called P2 clamping position, the lever 201 and in particular the cam surface 204 exerts a downward and rearward force on the retaining element 44A causing the downward movement, in the direction of the base 11 of the base 10, of this retaining element 44A.

The retaining element 44A being itself guided moreover in a guide groove 15 of the base, inclined towards the rear, as explained below, this retaining element finally moves downwards and towards the rear. during tightening, during the rearward rotation of the lever 201.

Thus, the retaining element 44A 13 approaches the axis of rotation 14.

The strap 42 is stretched parallel to its sliding direction, that is to say backwards and downwards.

The movement of the retaining element therefore causes the tightening of the strap on the instep of the shoe towards the base.

The shoe is pressed against the base and held firmly by the strap stretched above the instep 41.

Advantageously, the lever can be adapted to move the retaining element downwards, in the vertical direction, by a distance greater than or equal to 10 mm, in particular approximately 20 mm when the lever is moved from its first position, called maintaining P1 in its second position, called the clamping position P2, the retaining element then approaching the upper face of the base and the lower face of the sole of the shoe.

In a preferred example, when the lever is in its first position, called P1 holding position, the retaining element is about 70mm from the underside of the sole and therefore from the upper side of the base 10.

Then, when the lever is in its second position P2, called clamping position, the retaining element is then approximately 50 mm from the underside of the sole and from the upper face of the base.

The central axis of the retaining element 44A is then located approximately at a distance of between 50 and 85 mm from the heel, preferably between 70 and 80 mm from the heel of the shoe.

[0069] The passage from the holding position P1 to the clamping position P2 is carried out manually by the user by manually actuating the lever backwards, in the clamping direction S, as indicated in FIG. 9.

This manual action is in particular carried out by grasping a gripping element 216 for the sen-age of the lever 201.

Gripper 216 forms a handle that can be grasped with the hand.

The gripping element 216 is located in the upper front part of the lever.

Other actuating means could be envisaged, such as for example means provided with electronic assistance.

Furthermore, in the embodiments illustrated, the gripping element 216 actuating the clamping is integral with the lever 201 bearing the cam surface 204, but it will not be departing from 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 tightening direction.

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 direction of tightening S .

Several tightening positions P2 can be reached depending on the desired tightening on the shoe.

The more the lever 201, which carries the holding and clamping cam surface, is tilted backwards, the higher the clamping, i.e. the shoe retaining element descends downwards and approaches the upper surface of the base.

Thus, the strap 42 is tightened more and more against the upper part of the shoe in the area of the instep, the sole then being pressed against the base 11 of the element of the binding.

According to a second embodiment of the invention, illustrated in Figures 12 to 18, the first bearing surface of the lever does not comprise a succession of notches but a smooth profile in the shape of an arc of a circle.

This circular arc shape is eccentric with respect to the axis of rotation 14 so that distinct portions of the first support surface are positioned at different distances from the axis of rotation 14.

The bearing surface 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 progressive and smooth movement of the retaining element backwards and downwards, causing the tightening of the strap 42.

The position of the center of the arc of a circle forming the first bearing surface is then chosen so that the tensioning 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 rotation of the lever.

[0072] Referring to 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 straight and inclined forwards and upwards.

The guide groove makes it possible to guide the retaining element 44A when the shoe is put in place 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 holding position P1 and its second position, called tightening P2.

The strap is therefore stretched in the direction of the guide groove 15.

It is also avoided that the clamping operation of the lever, carried out by means of the gripping element 216, transmits forces to the strap perpendicular to its direction of sliding.

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 may be inclined with respect to the longitudinal axis X by an angle A2 substantially close to the angle Al formed by the strap 42 with the longitudinal axis X.

The angle A2 can therefore be comprised for example between 30° and 70°, in particular between 40° and 60°, preferably around 50°.

The guide groove is long enough so that even in the maximum sen-age 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 an arc of a circle, the center of which would be a front attachment point of the shoe 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.

[0073] When the cam-forming lever is in its initial boot position PO, the lever 201 is juxtaposed with the guide groove 15, so that the retaining element cannot be engaged therein without moving the lever 201.

In the first so-called holding position P1 or in the second so-called clamping position 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 retainer then being engaged in the guide groove 15.

Thus the lever 201 forming a cam covers laterally at least a part of the guide groove 15 (that is to say it covers at least a part of the guide groove according to a transverse projection of the lever 201 on the lateral flank 12A carrying the guide groove 15).

Indeed, the retaining element 44A of the strap 42 extends in the transverse direction beyond the lateral side of the base and interferes with an upper edge of the lever when the latter is in its first position.

To allow the engagement, or in other words the fitting, of the shoe in the binding device or the release of the shoe from the binding device, the lever is movable towards a third position P3, called retracted position distinct from the initial position PO, the first position PI and the second position P2.

This retracted position P3 is illustrated in particular in 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 capable of being engaged against the base to allow fitting or disengaged from the base, to allow removal, when the lever is in its third position P3, said to be retracted.

As a side note, FIGS. 13 and 18 represent 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 comprises notches.

The third so-called retracted position P3 of the lever corresponds to a position of the lever pivoted forwards from the initial position PO.

The initial position of the lever PO is the position in which the lever is located prior to fitting.

According to the embodiment presented, the initial position of the lever PO is identical to the holding position PI of the lever.

The initial position PO differs from the holding position PI 16 in 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 the initial position PO, while it is in the holding position P1.

In the initial position PO the boot is still outside the binding device.

With respect to the holding position P1 or with respect to the initial position PO, the retracted position P3 is obtained by rotation of the lever in the direction of release rotation D, as shown in figure 13.

Thus, the lever systematically passes through the initial position PO 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 lever forming a cam is movable in two opposite directions of rotation, one in the direction of tightening S and the other in the direction of release D.

In the proposed embodiment, the first position, called holding P1 also corresponds to the initial position PO where the binding device is ready to be put on.

It will not depart from the scope of the invention if the initial position PO is different from the holding position P1, in this case the initial position PO of the lever would preferably be positioned between the retracted position P3 and the holding position PI.

In order to allow rotation of the lever from the initial position PO to the third position P3, the binding device being unshod, the lever 201 forming a cam comprises a second support surface 208 or shoe ramp, arranged on a upper edge of the lever.

The second support surface 208 is intended to cooperate with the retaining element 44A of the boot to move the lever to its third position and allow automatic fitting of the boot into the binding device.

More particularly, as illustrated in FIG. 11, when the shoe approaches the binding device, the retaining element 44A comes into contact with the second bearing surface 208 and exerts on the lever a force Fi oriented towards the bottom.

The point of contact of the retaining element 44A on the support surface is positioned in front of the axis of rotation 14.

The force FI therefore causes a forward rotation of the lever, in the direction of release D.

As the lever pivots forward and the heel of the shoe approaches the base of the base, the retaining element 44A slides along the second support surface 208 or boot ramp, until at its rear end 209.

The lever is thus tilted far enough forwards for the retaining element 44A to be able to enter the guide groove 15 of the base.

The lever is then free to return to its first position, called holding 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 hindered by the retaining element 44A which protrudes from the outer side of the base, because the lever has a rear opening 210, in particular clearly visible in FIGS. 6 or 14.

The rear opening 17 210 is formed by a hollow made in the thickness of the lever carrying the cam, on its internal face, facing the side flank of the base 10.

This rear opening of the lever 201 allows the retaining element engaged in the guide groove 15 to slip behind the lever 201 and then to come into contact with the first support surface 204 or cam surface when the lever has resumed. its first holding position P1 and that the cam holds the retaining element 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 shoe is then put on 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 (bearing 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 eliminated, for example arm 211 which is thinner than arm 215.

Thus, the rear opening 210 has a dimension along the transverse axis Y at least equal to the length by which the retention element 44A of the shoe protrudes beyond the guide groove 15 in the direction Y towards the exterior of the base.

As shown in Figures 12 and 13, the attachment means 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, called retracted P3 towards its initial position PO, 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 a substantially circular arc shape 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 PO, the spring 51 is in a state of minimum compression.

Thus at rest, the lever naturally returns from the third position, called retracted P3 to the initial position PO.

During the engagement of the shoe 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 lever to rotate backwards, which causes the retaining element to pass through the an-st opening 210 then its bearing against the first support surface 204, the lever 201 then taking the first holding position P1.

[0078] At rest, when the shoe is not engaged in the binding, the lever 201 does not tilt backwards due to the shape and counter-shape formed respectively on the lever 201 on the inside face and on the side wall. of the base on the external face, forming a stop.

During fitting, the fitting force is sufficient to exit this stopper.

[0079] To allow the shoe to be released from the binding device, the lever also comprises a release pedal or handle 214, to manually tilt the lever to its third position, called the retracted position P3.

This release handle 214 could also be rocked with the foot.

The release handle is in the form of a protrusion integral with the body of the lever and extending outwards from the binding device, parallel to the transverse axis Y.

It may have a substantially rectangular shape.

As illustrated in FIG. 12, a force F2 directed downwards on the release handle tends to move the lever towards its third position, called retracted position P3.

The heaving 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 support surface 208 to make it pivot forwards, towards its third position P3.

Thus, when the lever is in the retracted position P3, in the most forward position, the guide groove 15 is completely cleared and the retaining element 44A of the shoe can move upwards and come out completely from the groove of the guide. guide 15 to allow the shoe to come off the binding device.

[0080] In the illustrated embodiments, the release handle is integral with the lever carrying the meat surface, but it would not be departing from the scope of the invention if this release handle were formed by an element distinct from the lever carrying the cam which would cooperate with this lever to drive it in rotation.

Furthermore, the gripping element 216 and the heaving handle 214 or pedal have been presented as two distinct elements.

Alternatively, these two elements could form a single piece, for example in the form of a handle extending parallel to the transverse axis Y.

The user could then pull up on this handle to rotate the lever in the direction of tightening S, or on the contrary, he could push down on this handle to rotate the lever in the direction of release D.

[0081] Referring to Figures 10 and 15, the base also includes abutment means 17 positioned at the front of the base which constitutes a front fastening means of the boot.

The abutment means 17 is capable of cooperating with a mating element of the shoe.

The abutment means makes it possible to position the boot correctly during the fitting operation and to retain the front of the boot in the vertical direction of the base, along the Z axis.

More specifically, according to the embodiment presented, the abutment means 17 is a lug 18 extending transversely towards the inside of the base from a side flank of the base.

This lug, of generally cylindrical shape, is particularly clearly visible in Figure 4.

The lug is able to cooperate with a notch 47 made in a side edge of the sole of the shoe.

The notch 47 may have an angled profile comprising a vertically extending engagement part 47A and a longitudinally extending holding part 47B.

When the lug is in place in the holding part, it can only be detached from the notch according to a very particular movement of the foot.

To engage the boot in the binding device, the user can first move his boot forward with the front inclined downwards.

He then causes the lug 18 to coincide with the notch 47 until the lug reaches the holding part 47B.

He can then pivot his foot around a transverse axis AT1 passing through the lug 18 so as to bring his heel back towards the base 11.

With such a movement, the retaining element 44A located in the rear part of the shoe comes into contact against the second support surface 208 substantially always at the same point, to allow the shoe to be put on in the binding device.

[0082] In other embodiments of the invention, the lug 18 and notch 47 type elements could be reversed, i.e. the lug could be positioned on the lateral sides of the shoe, in its front area and the notch could be positioned in the front side walls of the fixing device.

Any other attachment means of the hook or form and counter-form type could be envisaged to effect the attachment of the front part of the shoe with the binding device, this attachment allowing at least a vertical restraint of the front part of the shoe. shoe.

As a side note, when the abutment 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 ATI.

Thus, it could be possible to envisage the elimination of the guide groove 15 or its widening since the guiding is ensured by the cooperation of the abutment means 17 with the lug 18.

[0083] FIG. 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 attachment means described above.

The base 11 comprises a middle part III and two side parts 112A, 112B extending transversely on either side of the middle part III.

The middle part III is more rigid than the two side parts 112A, 112B.

For example, the two lateral parts 112A, 112B can be made of foam or any other equivalent material, covering the base 11 of the base 10, capable of being deformed elastically by a support of the sole of the shoe and therefore the foot of the user to provide comfort and / or damping.

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 lateral parts 112A, 112B are not compressed, they can extend substantially at 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 cc 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 in 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) of the orientation of the binding device with respect 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 lateral parts 112A, 112B of lower rigidity allows the shoe to pivot slightly around a longitudinal axis, according to 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 connection with the binding device of the lateral retaining elements 44A, 44B mounted on strap 42.

It is then the rest of the shoe, excluding the strap, which becomes mobile with respect to the strap and to the fastening device, in particular mobile in rotation by causing a rolling movement around the X axis.

This is made possible due to the ability of the strap 42 to slide relative to the upper of the shoe.

The user can thus freely modify or adjust his support on the gliding board, while keeping his foot well sen-é.

He can thus control his trajectory even more effectively.

In particular, the user finds the same sensations that he can have with a conventional binding where the shoe is retained only by two straps or two straps fixed to the binding device and independent of the shoe, and in particular the binding device according to the invention allows the shoe to regain a rolling movement relative to the base, as in the conventional bindings mentioned above.

[0086] Thanks to the invention, the user can easily engage his shoe 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 he only needs to engage the attachment means by bringing his foot 21 closer to the boot ramp as described above.

Prior to fitting, the strap is secured solely to the shoe.

After having snapped the shoe into 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 tightened, the strap is secured to the fastening device.

Depending on the compromise between ease of use and precision, the user can more or less pull the lever carrying the cam surface, that is to say more or less switch it from the first position, called P1 holding position. to the second position, called clamping P2.

When the first support surface is provided with notches of the order of a few units, he can easily identify a tightening level that suits him by identifying on which notch the retaining element of the shoe, 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 firmly press the shoe against the bottom of the binding device.

The rigidity of the materials constituting the body of the boot therefore does not affect the quality of the tightening obtained.

It is thus possible to obtain both an automatic fitting system, a particularly comfortable boot and a precise and effective clamping of the boot against the gliding board.

[0087] Then to remove the boot from the binding device or to take off, a single gesture is enough since it suffices to press the release handle of the lever carrying the cam to make it pivot forwards, for example by using the release handle 214.

This support can be achieved 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 via the connection bar 14, a single action on one of the levers makes it possible to simultaneously open the two levers to allow the removal of the shoe. shoe.

[0088] Thus, the attachment means comprises a lever consisting of a single piece combining the functions of automatic fitting, of maintaining the loose boot against the gliding board, of tightening the boot against the gliding board and finally interface with the user since it directly manipulates the lever for tightening and for heaving and not another element that would be connected to the lever.

According to the embodiment of the invention described, the lever is articulated in rotation on the fixing device and comprises a cam surface, a shoe ramp, a gripping zone or gripping element allowing the sen-age of the strap linked to the shoe, against the instep, and a release handle or release pedal allowing the release of the shoe from the binding device.

The lever illustrated in the different 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 departed from the scope of the invention if the main lever carries only the cam surface and the step-in ramp and if the grip zone and/or the grip handle are separate elements from this main lever, mounted on the base and which cooperate with this main lever respectively to effect the tightening and/or the heaving.

Different embodiments of the invention will now be described.

As illustrated in Figure 20, the previously described lever 201' could be reversed.

The passage from the first position to the second position would not be obtained by pivoting the lever backwards but forwards.

Similarly, the passage from the first position to the third position would not be obtained by pivoting the lever forwards but backwards.

By analogy with the main embodiment previously described, the lever would also comprise 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 to its retracted position.

The shape of the first support surface 204' or cam surface and of the second support surface 208' or step-in ramp is also adapted to take this reverse kinematics into account.

[0092]According to another variant not shown, the fastening device could comprise only one attachment means located at the rear of the fastening device.

This attachment means would comprise 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 gripping zones, one allowing the lever to be actuated in the direction of tightening and the other allowing the lever to be actuated in the direction of release.

The shoe would then also comprise a strap covering the instep of the shoe, the rear ends of which would be connected to each other by a connection, itself provided with a retaining element located in the rear zone of the shoe and intended to cooperate with the hooking means and in particular with the cam surface of the lever.

This retaining element, by cooperating with the attachment means, would make it possible to tighten the strap against the instep of the shoe towards the base when the lever is moved from its first position, called holding position, to its second position. , called clamping action on the clamping gripping element.

According to this variant, the vertical bitter wall 13 of the base would be provided with a guide groove or substantially vertical opening, emerging and open at the top, intended to receive and guide the retaining element.

[0093] As a side note, when the fixing device is provided with two attachment means synchronized by an axis of rotation, as has been described, one of the two levers 23 could be simplified and for example, one of the two levers could then not include the release handle 214.

[0094] The invention therefore has the following advantages: to propose a device for fixing a shoe with quick and automatic fitting, which can be put on without manual action to propose a shoe comprising a strap which moves slidably with respect to that -here, the sliding allowing the strap to be tightened on the instep of the shoe, when the shoe is already secured to the binding by action of the user on a gripping lever of the binding device which moves the cam and the strap in the direction of tightening by moving the retaining element linked to the strap, to offer the user the possibility of having a so-called position of support, of comfort where his foot is not compressed and where the shoe is not tightened by the strap and a distinct so-called tightening position where the foot is well held, i.e. the strap is tight against the instep and the guide of the gliding board is then efficient.

24 [Claim 1] [Claim 2] [Claim 3] [Claim 4] [Claim 5]

Claims (1)

CLAIMS 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 envelop a sole, a rear and lateral sides of a boot, - at least one attachment means (20, 30) movable relative to the base, characterized in that the attachment means is capable of cooperating with a retaining element ( 44A, 44B) connected to a strap of the shoe, the attachment means comprising a lever (201. 301) movable between a first holding position (P1) and a second clamping position (P2), the lever being able to retaining the boot in the base when it is in its first position, the lever being able to transmit a downward force onto the strap 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 tightening direction (S). Fixing device (3) according to one of the preceding claims, characterized in that the hooking means is arranged along a lateral side (12A, 12B) of the base (10), and in that the hooking means is adapted to cooperate with a lateral retaining element (44A, 44B) fixed to the strap of the shoe. Fixing device (3) according to one of the preceding claims, characterized in that the lever (201) comprises a first bearing surface (204) able to retain the lateral retaining element (44A) vertically, 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 bear against the retaining element when the lever is in its second position (P2), the second portion (207) being distinct from the first portion (206). Fixing device (3) according to the preceding claim, characterized in that the lever (201) is rotatable around 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 spin. [Claim 6] Fastening device (3) according to the preceding claim, characterized in that the first bearing surface (204) of the lever (201) comprises an arcuate shape 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 tightening position of the lever. [Claim 7] 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 forwards and upwards. [Claim 8] Binding device (3) according to one of the preceding claims, characterized in that the lever (201) comprises a second support surface (208) forming a boot ramp, the second support surface support being intended to cooperate with the retaining element (44A) to move the lever from an initial position (P0) to a third retracted position (P3). [Claim 9] Fastening device (3) according to the preceding claims, characterized in that the attachment means (20) 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) to its initial position (PO). [Claim 10] Binding 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).[Claim 11] 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 abutment means being capable of cooperating with a mating element (47) of the boot [Claim 12] Binding device (3) according to the preceding claim, characterized in that the abutment means (17) is a lug (18) extending transversely towards the inside of the base from a lateral side (12A, 12B) of the base, the lug being capable of cooperating with a notch (47 ) 26 [Claim 13] [Claim 14] [Claim 15] [Claim 16] [Claim 17] formed in a side edge of a sole of the shoe. Binding device (3) according to one of the preceding claims, characterized in that the base (10) comprises a base (11) intended to receive the support of the sole of the shoe, the base comprising a median part ( 111) and two side parts (112A, 112B) extending transversely on either side of the middle part, the middle part being more rigid than the two side parts, in particular the two side parts being made of foam. Fastening device (3) according to one of the preceding claims, characterized in that it comprises a first attachment means (20) movable relative to the base and a second attachment means (30) movable relative to the base, the first attachment means being capable of cooperating with a first retaining element (44A) connected to a strap of the shoe, the second attachment means being capable of cooperating with a second retaining element (44B ) connected to a shoe strap, the first attachment means comprising a first lever (201) movable between a first holding position (P1) and a second clamping position (P2), the second attachment means comprising a second lever (301) movable between a first holding position (P1) and a second tightening position (P2), the first lever and the second lever being capable of retaining 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 onto the strap when they are in their second position. Fastening device (3) according to the preceding claim, characterized in that the lever (201) of the first attachment means (20) is integral with the lever (301) of the second attachment means (30), and in that the lever of the first attachment means and the lever of the second attachment means are rotatable around the same axis of rotation (14), said axis of rotation being oriented parallel to a transverse axis (Y) of the device fixing, said axis being arranged at the rear of a base (11) of the base (10). Boot (4) suitable for being fixed to a binding device (3) according to one of Claims 1 to 15, characterized in that it comprises a strap (42) which can slide with respect to the boot. Shoe (4) according to Claim 16, characterized in that the strap (42) envelops an instep (41) of the shoe, the strap comprising a first end (43A) extending from one side of the instep - 27 of the foot, the first end being connected to a retaining element (44A) intended to cooperate with a hooking means (20) of the binding device (3), to clamp the shoe against the binding device. [Claim 18] Shoe (4) according to one of Claims 16 or 17, characterized in that it comprises a strap (42) assembled to slide, the strap enveloping an instep (41) of the shoe, the strap comprising a first end (43A), extending from a first side of the instep, and a second end (43B), extending from the other side of the instep, the first end comprising a first lateral retaining element (44A) intended to cooperate with a first hooking means (20) of the fixing device, the second end comprising a second lateral retaining element (44B) intended to cooperate with a second grip (30) of the binding device to tighten the shoe against the binding device. [Claim 19] Shoe (4) according to one of Claims 17 or 18, characterized in that the retaining element (44A) comprises a lug extending transversely with respect to the side of the shoe. [Claim 20] Binding system characterized in that it comprises: - a binding device (3) according to one of claims 1 to 15, and - a boot (4) according to one of claims 16 to 19. [Claim 21] Equipment (1) for practicing snowboarding comprising a gliding board (2) and at least one fixing device (3) according to one of Claims 1 to 15, in particular two fixing devices according to one of claims 1 to 15.