FR3046938A1 - RESTRAINT DEVICE FOR MULTIPURPOSE SKI WITH DEBRAYABLE FASTENING AND SKI SHOE SUITABLE FOR SUCH A SKI. - Google Patents

Abstract

The invention relates to a mechanical retaining device at least partially attached to the second face of the ski, the retaining device having a movable retaining member configured, in mounted condition, for constraining the leg of a skier in at least one position of retainer in which the retainer is in contact with the leg. The invention also relates to a ski boot comprising a front portion shaped to cooperate with the fixing stop of the ski according to the invention.

Description

The present invention relates to the ski field and more particularly to the material for practicing such an activity and in particular skis and ski boots.

There are many different ways of skiing such as cross-country skiing, downhill skiing, Nordic cross-country skiing, alpine skiing, etc.

Cross-country skiing consists of moving on prepared and groomed trails. The skis used are long, narrow and light compared to those for alpine skiing and the shoes are soft and light allowing the flexing of the foot and are fixed only at the front.

Nordic ski touring is practiced with equipment directly derived from the equipment of the ski track: the skis are a little narrower than those of track skis, and are equipped with metal edges. The term "square" means the metal ridge along the sole of the ski allowing said ski to "hang" in the hard and frozen snow. The shoes used in Nordic ski touring also allow foot flexion.

Alpine ski touring usually takes place on virgin snow and untagged wild terrain. The shoes have rigid soles that do not allow flexion of the foot. As for Alpine ski skis, skis have front and rear safety bindings for use in alpine technique and allow climbing. One of the main disadvantages of skiing is the multiplication and specialization of each material for every way of skiing. Thus, a so-called bottom ski will not be suitable for an alpine hike and even a so-called alpine ski will not be suitable for cross-country skiing or for alpine hiking, etc. Thus, a skier adept in many of these activities will necessarily have different equipment dedicated to each of these activities, which is cumbersome, very expensive and impractical. The object of the invention is to remedy all or some of the aforementioned drawbacks. The invention relates to a retaining device configured to be fixed on a ski, and comprising a configured movable retaining member, in mounted condition, for constraining the leg of a skier in at least one retaining position in which the retainer is in contact with the leg, and to release the leg of the skier in at least one folded position in which the retainer is folded.

The retaining device according to the invention has the advantage of being able to be used for the practice of skiing requiring a flexion of the foot and thus a freedom of the skier's leg in a retracted position of the retaining device and also for the practice of the alpine skiing or other activities requiring a restraint of the leg including downhill in a retaining position of the retainer. Thus, the invention allows the skier to move quickly and easily even when climbing. Thus, the use of a versatile ski allows the use of a type of soft and lightweight shoe for flexing the foot, which improves the performance and comfort of the skier regardless of the chosen activity, by making a direct mechanical connection between the skier's leg and the ski. Thanks to this invention, the advantages of the alpine material are also obtained.

In the present application, the term "holding position" will be understood to mean a position in which the ski-restraint device is used.

In the present application, the term "fallback position" means a position in which the restraint is not used.

According to one characteristic of the invention, the retaining device is a mechanical retaining device.

According to a characteristic of the invention, the retaining device is arranged behind the fixing abutment, so as to define with the fixing stop a location for receiving a ski boot.

Alternatively, the ski retaining device is arranged in front of the fixing stop.

According to one characteristic of the invention, the retaining member is rotatably mounted on the ski.

According to a characteristic of the invention, in the retracted position, the retaining member is configured to extend in a plane substantially parallel to that in which the ski extends, preferably the retaining member is plated at least partially against the second face of the ski.

According to one characteristic of the invention, in the retaining position, the retaining member extends in a plane intersecting with the plane in which the ski extends and preferably in a plane substantially perpendicular to the plane in which the ski extends .

According to one characteristic of the invention, the retaining member has at least partially a shape adapted to the shape of the skier's leg.

According to one characteristic of the invention, the retaining member is a tongue articulated on the ski or a hinged bow on the ski.

According to one characteristic of the invention, the retaining member comprises a fastening device intended to grip at least partially the skier's leg.

According to one characteristic of the invention, the attachment device comprises a fastening portion formed on the retaining member or in cooperation with the retaining member.

Preferably, the attachment portion is coincident with the free end of the retaining member.

According to another characteristic of the invention, the attachment portion of the attachment device is independent of the retaining member.

According to another characteristic of the invention, the free end of the retaining member is fixed on the attachment portion.

According to one characteristic of the invention, the attachment portion is shaped to partially grip the skier's leg.

According to one characteristic of the invention, the attachment device comprises at least one leg support intended to be positioned facing the fastening portion of the retaining member or at least one leg support arranged in a position of restraint, on the front of the leg, opposite the attachment portion.

According to a feature of the invention, the leg support and the attachment portion are connected to each other by a connecting member so as to hold the retaining member against the skier's leg.

According to a characteristic of the invention, the connecting element comprises a strap with a clip and / or a passer.

According to another characteristic of the invention, the strap acts as a leg support and is attached to the attachment portion.

Alternatively, the connecting element comprises a rotating drum on which a double cable is wound, the loops of the double cable being passed behind a hook formed on each side of the leg support.

According to one characteristic of the invention, the retaining member is adjustable in height, which makes it possible to adapt the height of the retaining member to the skier.

According to a feature of the invention, the retaining member is removable, which allows to change the retaining member depending on the skier.

According to a feature of the invention, the retaining device comprises a locking mechanism cooperating with the retaining member and configured to lock the retaining member in at least the retaining position and / or the retracted position.

According to a characteristic of the invention, the locking mechanism comprises a tube on which one end of the retaining member is fixed, a first bearing fixed at one end of the tube, and a second bearing arranged at a second opposite end, the tube being attached to the second face of the ski.

According to a characteristic of the invention, the first bearing is fixed.

According to another characteristic of the invention, the second bearing is movable.

According to a characteristic of the invention, each bearing has a plurality of teeth formed on one edge, said toothed edge being intended to cooperate an edge of one end of the tube by complementarity of shape.

According to one characteristic of the invention, the locking mechanism comprises an eccentric arranged to lock the second movable bearing in the position of cooperation with the tube. The subject of the invention is also a ski comprising a first so-called sole face intended to be in contact with snow, a second face opposite to the first face, intended to receive a ski boot, an integral fixing stop on the second face of the ski and shaped to receive a front portion of the ski boot so as to fix the ski boot on the ski, - a retaining device according to the invention, said retaining device being fixed at least partially on the second face of the ski.

According to one characteristic of the invention, the attachment stop is secured to the second face of the ski.

According to a feature of the invention, the fixing stop comprises a receiving base intended to be fixed on the second face of the ski.

According to a feature of the invention, the fixing stop further comprises two lugs each having a housing for receiving a portion of a ski boot engaging device.

According to one characteristic of the invention, each ear has an internal groove shaped to facilitate engagement and disengagement of the engagement device.

According to a characteristic of the invention, the fixing abutment further comprises a disengagement member. Preferably, the disengaging member has a shape adapted to the shape of the portion of the engagement device.

According to the invention, the fixing abutment is preferably used in combination with the retaining device according to the invention but has an independent use to said retaining device. Thus, the attachment stop can be adapted to any ski requiring a front attachment allowing the use of flexible ski boots and allowing flexing of the foot.

According to one characteristic of the invention, the ski comprises at least one centering index positioned on the ski, preferably on the second face of the ski, said centering index being shaped to cooperate with a portion of the ski boot. The invention also relates to a ski boot adapted to cooperate with the ski according to the invention.

According to one characteristic of the invention, the ski boot has a front portion, a sole, an engagement device integrated in the front portion and preferably at the sole.

According to a characteristic of the invention, the engagement device comprises a tube in which a ball is positioned at each end, each ball being held under pressure by a spring.

According to a feature of the invention, the engagement device further comprises a hardness adjusting member.

Advantageously, the hardness adjusting member is arranged between the springs.

According to one characteristic of the invention, the hardness adjusting member is in the form of a truncated cone configured to be rotated so as to vary the pressure of the springs on the balls.

According to one characteristic of the invention, the boot comprises a heel opposite to the front portion, indexing formed at the heel and configured to cooperate with the centering index arranged on the ski, in order to ensure the correct positioning of the shoe. the shoe on the ski. The invention will be better understood, thanks to the following description, which relates to embodiments according to the present invention, given as non-limiting examples and explained with reference to the attached schematic drawings, in which: FIG. 1 is a rear perspective view of the ski according to the invention comprising a retaining device according to a first embodiment; FIG. 2 is a front perspective view of the ski shown in FIG. 1; FIG. in rear perspective of the ski shown in FIG. 1, the retaining element being in the intermediate position, FIG. 4 is a perspective view of the retaining device according to the first embodiment, FIG. 5 is a detailed view of the mechanism. FIG. 6 is a detailed view of the locking mechanism of the holding device shown in FIG. 4 in the position of FIG. 7 is a rear perspective view of the ski according to the invention comprising a retaining device according to a second embodiment in the retaining position, FIG. 8 is a front perspective view of the ski shown in FIG. FIG. 9 is a perspective view of the ski shown in FIG. 7, the retaining member of which is in a retracted position; FIG. 10 is a detailed view of the locking mechanism of the retaining device according to the second or the third embodiment shown in Figures 7 and 11, - Figure 11 is a front perspective view of the ski according to the invention comprising a retaining device according to a third embodiment, - Figure 12 is a front perspective view of the ski according to the invention comprising a retaining device according to a variant of the third embodiment shown in FIG. 11, - FIG. 13 is a side view of the ski according to the invention and as represented in FIG. 12 is a perspective view of a first embodiment of a connecting element referring to any embodiment of the retaining device, FIG. 15 is a detailed view of the first embodiment of the connecting element equipped with a safety device represented in FIG. 14; FIG. 16 is a front perspective view of a second exemplary embodiment of FIG. FIG. 17 is a rear perspective view of the second exemplary embodiment of the connecting element equipped with a safety device shown in FIG. 16, FIG. 18 is a front perspective view of FIG. a third embodiment of the connecting element, - Figure 19 is a rear perspective view of the third embodiment of the connecting element, - Figure 20 is a front perspective view of a variant of the third th example of embodiment of the embodiment element shown in FIGS. 18 and 19; FIG. 21 is a partial side view of the connecting element according to the variant represented in FIG. 20; FIG. 22 is a view of the fixing stop of the ski according to a first embodiment and according to any one of the embodiments of the retaining device, the illustrated fixing stop being in cooperation with a device for engaging a ski boot, - the figure 23 is a perspective view of the fixing abutment according to a third embodiment, - FIG. 24 is a perspective view of the fixing abutment according to a second embodiment, - FIG. 25 is an exploded view of the second embodiment. Embodiment shown in FIG. 24; FIG. 26 is a front perspective view of a ski boot according to the invention; FIG. 27 is a rear perspective view of a ski boot according to FIG. FIG. 28 is a partial view of the ski boot engaging device according to the invention; FIG. 29 is a detailed view of the ski according to the invention having a centering index.

The ski 1 according to the invention will be described below and this, regardless of the embodiment of the retaining device.

The ski 1 comprises a first face 2 called sole intended to be in contact with snow, and a second face 3 opposite to the first face 2, intended to receive a ski boot 50.

The ski 1 further comprises a fastening abutment 4 secured to the second face of the ski 3, illustrated in particular in FIGS. 22 to 25. The fixing abutment 4 is shaped to receive a front portion 51 of the ski boot 50 so as to attaching the ski boot 50 to the ski 1. More particularly, the fixing stopper 4 comprises a receiving base 4a intended to be fixed on the second face of the ski. The fixing abutment further comprises two lugs 4b each having a housing 4c intended to receive a portion of an engagement device 54 of a ski boot 50 according to the invention, which will be described later in the description with reference Figures 26 to 28. The first and second ears 4b are positioned on either side of the receiving base 4a. The first and second ears 4b are symmetrical with respect to the reception base 4a. Each ear 4b extends in a plane substantially perpendicular to the plane in which the receiving base 4a extends. The housing 4c of each ear 4b is a through orifice. The fixing stop 4 further comprises a disengaging member 4d.

In a first embodiment and as illustrated in FIG. 22, the receiving base is also intended to review a front portion of a ski boot, as can be seen in particular in FIGS. 2, 8, 11, 12, 13. 4d disengagement is preferably positioned at one of the ears of the fixing abutment. More specifically, one of the lugs 4b has a hole 4f in the housing 4c and passing through the latter, said hole 4f being formed along axis perpendicular to the axis in which the hole of the housing 4c is made. The hole 4f opening and through is shaped to receive said engagement member 4d at least partially. In this first embodiment, the disengaging member 4d is a spring loaded pusher. Said hole 4f is therefore also shaped to house a spring. The pusher comprises a rod cooperating with the spring at one end and comprises a projecting portion at the other end. The rod of the pusher is shaped to cooperate with the portion of the engagement device 54 housed in the housing 4c of the ear 4b as illustrated in Figure 22 and Figure 28. The disengaging member and preferably the rod has a concavity adapted in the form of the portion of the engagement device 54.

In a second embodiment and as illustrated in FIGS. 24 and 25, the receiving base is also intended to review a front portion of a ski boot, as can be seen in particular in FIGS. 2, 8, 11, 12, 13.L 4d disengagement member is preferably positioned at one of the ears of the fixing stop. More specifically, one of the lugs 4b has a hole 4f in the housing 4c and passing through the latter, said hole 4f being formed along axis perpendicular to the axis in which the hole of the housing 4c is made. The hole 4f opening and through is shaped to receive said engagement member 4d at least partially. In this second embodiment, the disengaging member 4d is a screw or tenon disengaging the hole 4f by an extraction tool such as a screwdriver for example or cooperating a spring in the same manner as for the first embodiment.

In a third embodiment shown in FIG. 23, the reception base 4a is arranged towards the spatula of the ski (towards the front of the ski) and is not intended to be placed under the ski boot 50. The base of 4a reception comprises two movable parts connected to each other by a disengagement member 4d operating as a loosening / clamping system. When it is desired to disengage the engagement device 54 of the ski boot 50, it is actuated by turning the disengagement member 4d so as to move the parts of the receiving base 4a away from each other. Thus, the portions of the engagement device 54 engaged in the housings 4c of each ear 4b are disengaged and the ski boot 50 can be removed.

The ski 1 comprises a retaining device 5 fixed at least partially on the second face 3 of the ski. The retaining device 5 comprises a movable retaining member 6 configured, in mounted condition, to constrain the leg of a skier 101 in at least one retaining position in which the retaining member 6 is in contact with the leg 101, and to release the leg of the skier 101 in at least one folding position in which the retaining member 6 is folded at least partially at the second face of the ski 3.

The retaining device 5 further comprises an attachment device 7 intended to grip at least partially the leg of the skier 101.

The first embodiment will now be described with reference to Figures 1 to 6. The retaining device 5 of the ski according to the first embodiment is arranged behind the fixing stop 4, so as to delimit with the fixing stop 4 a location for receiving a ski boot 50.

As shown in Figures 1 to 4, the retaining member 6 is rotatably mounted on the ski. In the retracted position, the retaining member 6 is configured to extend in a plane substantially parallel to that in which the ski extends, preferably the retaining member 6 is plated at least partially against the second face of the ski 3. In the retaining position, the retaining member 6 extends in a plane intersecting the plane in which the ski 1 extends and preferably in a plane substantially perpendicular to the plane in which the ski 1 extends, in support against the calf of the skier in advanced position. The retaining member 6 is in the form of a tongue shaped to receive the rear of the leg of the skier 101. For this purpose, the retaining member 6 is curved or has a concave shape or a shape adapted to the shape of the skier's leg.

As illustrated in particular in Figures 4 to 6, the retaining device 5 further comprises a locking mechanism 8 configured to lock the retaining member 6 in position or, as shown in Figures 7, 8, 17 in a retaining position, either in a fallback position or in an intermediate position. The locking mechanism 8 comprises a tube 8a held by a first bearing 8b at a first end of the tube 8a, and a second bearing 8c at a second opposite end. The first bearing 8b is fixed. The second bearing 8c is mobile. Each bearing 8b, 8c has a plurality of teeth 8d formed on one edge, said toothed edge being intended to cooperate an edge of one end of the tube 8a by complementary shape. The locking mechanism 8 further comprises a base plate 8f on which is fixed the first fixed bearing 8b. The second bearing 8c is movable in translation along the longitudinal axis of the tube 8a on the base plate 8f so as to disengage the teeth 8d of said second bearing 8c of the teeth of the tube 8a in order to allow the rotation of the retaining member 6 The locking mechanism 8 comprises an eccentric 8g provided on the base plate 8f and arranged to lock the second movable bearing 8c in a position of cooperation with the tube, whatever the position of the retaining member 6 and as illustrated in FIGS. Figures 5 and 6.

In the example illustrated in FIG. 2, the attachment device 7 comprises an attachment portion 7a formed on the retaining member 6 and preferably at the free end of the retaining member 6. The attachment portion 7a is shaped to grip at least partially the leg of the skier 101. The attachment device 7 further comprises at least one leg support 7b intended to be positioned facing the attachment portion 7a of the retaining member 6. The leg support 7b and the attachment portion 7a are connected to each other by a connecting member 9 so as to hold the retaining member 6 against the leg of the skier 101. The leg support 7b is preferably padded for better comfort of the skier 101. The leg support 7b can be integrated into a garment 102 or be independent to the garment 102 of the skier and attached to the latter for example by velcro or by simple contact .

The second embodiment will now be described with reference to FIGS. 7 to 9. As in the first embodiment, the ski retaining device 5 according to the second embodiment is arranged behind the fixing stop 4, and more precisely at the back of the leg of the skier 101.

In the second embodiment, the retaining member 6 is rotatably mounted on the ski. In the retracted position, the retaining member 6 is configured to extend in a plane substantially parallel to that in which the ski extends, preferably the retaining member 6 is plated at least partially against the second face of the ski 3. In the retaining position, the retaining member 6 extends in a plane secant to the plane in which the ski 1 extends and preferably in a plane substantially perpendicular to the plane in which the ski 1 extends.

According to the second embodiment, the retaining member 6 is a hoop 6c articulated on the ski 1. The retaining member 6 has a reinforcing cross member 6d. The retaining member 6 is tubular. The retaining member 6 is preferably of substantially rectangular shape. The retaining device 5 further comprises a tie rod 6f moored at a first end on the reinforcing beam 6d of the retaining member 6 and at a second end on the ski 1, away from the fixing of the retaining member. 6. The second end of the tie rod 6f is equipped with a hooking system 6g shown in FIG. 10. This hooking system 6g is in the form of a hook having a protruding pin 6h mounted on a spring 6i which is intended to to support and secure the tie 6f on a support or a mooring element, in this case, on the ski 1.

According to the second embodiment, the locking mechanism 8 comprises a protruding member 6j, preferably in the form of a hook, shaped to receive the retaining member 6 when said retaining member 6 is in the retaining position, as illustrated in FIGS. and 9. Advantageously, the locking mechanism 8 is formed on the attachment portion 7a.

In the folded position illustrated in FIG. 9, the end of the tie rod 6f attached to the ski 1 is detached, which makes it possible to fold the retaining member 6 on the back of the ski 1, the end of the free tie rod 6f is preferentially magnetized on the ski or clipped.

In FIGS. 7 to 9, the attachment device 7 comprises a fastening portion 7a arranged, in the retaining position, on the rear of the leg 101 and cooperates with the retaining member 6 via the locking mechanism 8. The attachment device 7 further comprises at least one leg support 7b arranged, in the retaining position, on the front of the leg 101, opposite the attachment portion 7a. The attachment portion 7a and the leg support 7b are connected to each other by a connecting member 9 as in the first embodiment and as explained later in the description with reference to Figures 14 to 21. In the second embodiment, the attachment portion of the fastening device is independent of the retaining member.

The third embodiment will now be described with reference to FIG. 11. In contrast to the first and second embodiments, the ski retaining device according to the third embodiment is arranged in front of the fixing stop, and more precisely on the front of the skier's leg.

According to the third embodiment, the retaining member 6 is rotatably mounted on the ski. In the retracted position illustrated in FIG. 13, the retaining member 6 is configured to extend in a plane substantially parallel to that in which the ski extends, preferably the retaining member 6 is partially flattened against the second face 3. In the retaining position, the retaining member 6 extends in a plane intersecting the plane in which the ski 1 extends and preferably in a plane substantially perpendicular to the plane in which the ski 1 extends , the retaining member being preferentially pressed against or in contact with at least partially the skier's leg. The retaining member 6 is tubular and preferably formed of two curved tubes 6k connected to each other by a cross member 61 at least. Each tube 6k is fixed at a first end on the ski 1, and preferably at the level of the receiving base 4a of the fixing abutment 4, as illustrated in FIG. 11 in particular. The second ends of the tubes 6k meet on the attachment portion 7a of the fastening device 7 of the retaining device 5 described below. The retaining device 7 further comprises a tie rod 6f moored at a first end on the reinforcing cross member 61 of the retaining member 6 and at a second end on the ski 1, away from the attachment of the retaining member. 6. The second end of the tie rod 6f is equipped with a hooking system 6g shown in FIG. 10. This hooking system 6g is in the form of a hook having a protruding pin 6h mounted on a spring 6i which is intended to to support and secure the tie f on a support or a mooring element, in this case, on the ski 1.

The attachment device 7 comprises a fastening portion 7a arranged, in the retaining position, on the front of the leg 101 and cooperates with the retaining member 6 via the locking mechanism 8. The fastening device 7 further comprises at least one leg support 7b arranged, in the retaining position, on the rear of the leg 101, opposite the attachment portion 7a. The attachment portion 7a and the leg support 7b are connected to each other by a connecting element 9 as in the first and second embodiments and as explained later in the description with reference to the figures 14 to 21. In the third embodiment, the end of the retaining member 6 is fixed on the attachment portion 7a.

According to the third embodiment, the locking mechanism 8 comprises a housing shaped to receive the second end of each tube 6k. The housing being provided on the fastening portion 7a of the fastening device 7 as visible in FIG. 11.

In the retracted position of the retaining device 7 according to the third embodiment, all the elements of the retaining device 5 lie down towards the front of the ski 1 as illustrated in FIG. 13.

A variant of the third embodiment will now be described with reference to Figures 12 and 13. The variant of the retainer 5 according to a third embodiment differs from the retainer 5 of the third embodiment in that the leg support 7b of the attachment device 7 is included in a garment 102 and has a protruding lug 7c intended to cooperate with the housing provided to accommodate the second end of each tube 6k of the retaining member 6. In folded position, as illustrated in Figure 13, only the protruding lug 7c remains at the leg 101 since it is part of the garment 102, the rest of the retainer 5 is lying on the front of the ski 1. The rest of the characteristics described for the third embodiment is valid for this variant.

According to the invention, there are several embodiments for the connecting element 9 provided for connecting the attachment portion 7a to the leg support 7b of the fastening device 7 of the retaining device 5. The exemplary embodiments described in FIG. 14 to 21 are compatible with any embodiment of the retainer 5 except explicitly formulated exception.

In Figures 14 and 15, a first embodiment of the connecting element 9 is shown. In this first example, using a strap 9a with clip and / or 9b to connect the leg support 7b and the attachment portion 7a. The strap 9a can serve as a leg support 7b and is attached to the attachment portion 7a. As illustrated in Figure 15, the first embodiment of the connecting element is equipped with a safety device comprising two springs on either side of an opening for receiving a projecting portion of clip. The safety device allows to open if a pressure exerted is too strong compared to the resistance of the springs, which makes it possible to avoid accidents.

In Figures 16 and 17, a second embodiment of the connecting element 9 is shown. In this second example, the connecting element 9 comprises a rotating drum 9c on which a double cable 9d is wound, the loops of the double cable 9d being passed behind a hook 9f formed on each of the sides of the leg support 7b. The adjustment and tightening is achieved by turning the drum 9c.

As illustrated in Figure 17, the second embodiment of the connecting element is equipped with a safety device comprising two movable balls (not visible) and retractable in the hook of the locking mechanism. The safety device makes it possible to push the retaining member out of the hook if a pressure exerted on said locking mechanism is too high compared to the resistance of the balls, which makes it possible to avoid accidents.

In Figures 18 and 19, a third embodiment of the connecting element 9 is shown. In this third example, the connecting element 9 comprises a projecting lug 9g cooperating with a housing 9h pivoting quarter turn and shaped to receive said lug protruding 9g. In this third example, the housing 9h is a blind hole in which it returns by force the protruding lug 9g.

In Figures 20 and 21, a variant of the third embodiment is shown. In this variant, the housing 9h is not blind but inverted U-shaped bearing on the protruding lug 9g. The invention also relates to a ski boot 50, having a flexible and lightweight structure in the sense that it has substantially the same properties as a nordic ski touring boot.

The ski boot 50 according to the invention and its characteristics are shown in FIGS. 26, 27, 28 and 29. The ski boot 50 has a front portion 51, a heel 52 opposite the front portion 51, a sealing sole 53. The ski boot 50 according to the invention comprises an engagement device 54 integrated in the front portion 51 and more particularly at the sole 53 as illustrated in particular in FIG. 26. The engagement device 54 is better represented in FIG. The engagement device 54 comprises a tube 54a in which a ball 54b is positioned at each end. Each ball 54b is held under pressure by a helical spring 54c. Between the two springs 54c is arranged a hardness adjusting member 54d. The adjusting member 54d is in the form of a truncated cone configured to be rotated so as to vary the pressure of the springs 54c on the balls 54b. To put on the ski, it is necessary to place the shoe 50 above the fixing stop 4 and to press in said fixing stop 4 so that the protruding balls 54b of the front portion 51 are housed in the housings 4c provided for in FIG. this effect as described above. To remove, a disengaging member 4d is actuated to press or release the ball or balls 54b so as to dislodge the housing 4c of the fixing abutment 4.

The ski boot 50 according to the invention further comprises an indexing 55 formed at the heel 52, which allows, in cooperation with a centering index 10 formed on the ski 1, to ensure the proper centering of the shoe on ski. This feature is visible in Figure 29.

Of course, the invention is not limited to the embodiments described and shown in the accompanying figures. Modifications are possible, particularly from the point of view of the constitution of the various elements or by substitution of technical equivalents, without departing from the scope of protection of the invention.

Claims (10)

A ski retainer characterized in that the retainer is configured to be attached to a ski, and comprising a configured movable retainer, in mounted condition, for constraining a skier's leg in at least one position retainer in which the retainer is in contact with the leg, and to release the leg of the skier in at least one folded position in which the retaining member is folded. 2. Retaining device according to claim 1, wherein the retaining member has at least partially a shape adapted to the shape of the leg of the skier. 3. Restraint device according to any one of claims 1 or 2, wherein the retaining member comprises a fastening device for gripping at least partially the leg of the skier. The retainer of claim 3, wherein the attachment device comprises a fastener portion provided on the retainer or in cooperation with the retainer. 5. Restraint device according to claim 4, wherein the fastening device comprises at least one leg support intended to be positioned opposite the attachment portion of the retaining member. A retainer according to claim 5, wherein, wherein the leg support and the attachment portion are connected to each other by a connecting member so as to hold the retainer against the skier's leg. 7. Restraint device according to any one of claims 1 to 6, comprising a locking mechanism cooperating with the retaining member and configured to lock the retaining member in at least the retaining position and / or the position fallback. 8. Ski comprising: a first face, said sole intended to be in contact with snow, a second face opposite to the first face, intended to receive a ski boot, a fastening abutment secured to the second face of the ski. ski and shaped to receive a front portion of the ski boot so as to attach the ski boot to the ski, - a retainer according to any one of claims 1 to 7, said retainer being fixed at least partially on the second face of the ski. 9. Ski according to claim 8, wherein the fixing stop further comprises two lugs each having a housing for receiving a portion of a ski boot engaging device. 10. Ski boot comprising a front portion comprising an integrated engagement device intended to cooperate with a device for engaging the ski binding stop according to claim 9.