FR3062288A1 - SPORTS SHOE - Google Patents

Abstract

The present invention relates to a shoe (10) sport intended to be connected to a gliding machine, the shoe (10) comprising: - a sole (100) comprising at least one attachment element (111) intended to cooperate with a mechanism carried by the gliding apparatus so as to allow rotation of the shoe (X10) about a transverse axis (Y10), - a rod (200) comprising: • a buttress (210) aft, • a lateral arm (221a) and a medial arm (221b), each rotatably mounted on the buttress (210), respectively; • a clamping band (230) connecting upper ends (2212a, 2212b) of the arms (221a, 221b) so as to cover a lower back and / or front of the leg. The clamping band (230) is rotatably mounted on the arms (221a, 221b) about an axis substantially parallel to the transverse axis (2).

Description

Holder (s): folded.

SALOMON SAS simO joint-stock company Request (s) for extension:

(® Agent (s): SALOMON SA.

FR 3 062 288 - A1 ® SPORTS SHOE.

@) The present invention relates to a sport shoe (10) intended to be connected to a sliding device, the shoe (10) comprising:

- a sole assembly (100) comprising at least one attachment element (111) intended to cooperate with a mechanism carried by the sliding device so as to allow rotation of the boot (X10) around a transverse axis (Y10 ),

- a rod (200) comprising:

a rear buttress (210), a lateral arm (221a) and a medial arm (221b), each mounted in rotation on the buttress respectively (210), a tightening band (230) connecting upper ends (2212a, 2212b) of the arms (221a, 221 b) so as to cover a lower rear and / or front part of the leg.

The tightening band (230) is rotatably mounted on the arms (221 a, 221 b) around an axis substantially parallel to the transverse axis (2).

SPORTS SHOE

TECHNICAL FIELD OF THE INVENTION

The invention relates to a sports shoe intended to be mechanically connected to a sliding device. It relates more particularly to a shoe for sliding sports allowing a good unrolling of the foot, especially in the metatarsal area.

The invention will find particularly advantageous application cross-country skiing, a sport in which the mobility of the foot must make it possible to perform an alternative step, a step of the skater or skating.

STATE OF THE ART

Sliding sports, such as cross-country skiing, place many demands on the shoe. In particular, the shoe must allow good mobility in the sagittal plane, for example to perform an alternate step or a skater's step, while providing firm support for the ankle, in the frontal plane, in order to limit:

the outward rotation of the foot relative to the leg, at the ankle, around the longitudinal axis of the foot, a movement also known as supination, and / or

- the inward rotation of the foot relative to the leg, a movement also known as pronation.

Furthermore, in order to be effective, such a shoe must be light and must be able to be worn for several hours without injuring or annoying the user.

Known shoes do not make it possible to meet these objectives in a truly satisfactory manner.

Indeed, document EP-A-0 416 437 describes a cross-country ski boot integrating a collar articulated on a rear reinforcement covering the heel of the user. This construction thus allows good mobility in the sagittal plane while retaining good lateral support of the ankle. However, this solution turns out in practice not to be sufficiently comfortable.

Other existing shoes have acceptable mobility of the foot in the sagittal plane but they do not offer sufficient lateral support of the ankle, except to negatively impact their weight and / or comfort.

Consequently, there is a need consisting in proposing a solution which reduces or even eliminates at least some of the disadvantages of known shoes.

The object of the invention is to provide an improved sports shoe.

An object of the invention is to provide a shoe having good lateral support for the foot, in particular at the ankle, and good mobility of the foot, in the sagittal plane.

One goal is to offer a comfortable shoe, especially in dynamics, when the user practices his sport.

Another object is to propose a shoe making it possible to maintain a tightening zone adapted to the morphology of the leg during the practice of the sport.

SUMMARY OF THE INVENTION

To achieve these objectives, one aspect of the present invention relates to a sports shoe intended to be connected to a sliding device, the sports shoe comprising: a sole assembly comprising at least one attachment element preferably in its front part, the the attachment element being intended to cooperate with a mechanism carried by the gliding device so as to allow rotation of the boot around a transverse axis which is perpendicular to a longitudinal axis along which the sole assembly mainly extends, a rod comprising at least:

• a rear buttress, • a lateral arm and a medial arm, each arm comprising a lower end, an upper end and a connecting portion connecting the lower and upper ends, the lateral arm and the medial arm each being mounted, at their lower end, in rotation on respectively a lateral edge and a medial edge, preferably lower, of the rear buttress, and extending upwards so as to move away from the sole assembly up to their upper end, • at least one tightening band connecting the upper ends of the arms so as to cover a rear and / or front part of the user's leg.

The tightening band is rotatably mounted on the upper ends of the arms around an axis substantially parallel to the transverse axis.

Thus, the tightening band and the two arms provide reinforced lateral support of the foot, and more particularly of the ankle, while allowing flexions of the foot around a transverse axis at the ankle passing through the medial and lateral malleoli. , this without significantly impacting the weight of the shoe.

Note that lateral support of the foot improves the skier's proprioception. He will then have better control of his movements and better sensations.

Furthermore, the shoe according to the invention has the advantage of being particularly comfortable. Indeed, thanks to the rotational mobility of the tightening band with respect to the arms, the tightening band remains relatively fixed with respect to the leg during the relative movement of the foot with respect to the leg. The friction between the tightening band and the leg is thus reduced, or even entirely eliminated.

However, in the context of the development of the present invention, it has been found that with the shoes according to the prior art, this friction is a significant source of discomfort and discomfort.

Optionally, the shoe according to the invention may have at least any of the following optional characteristics which can be taken separately or in combination.

According to one embodiment, the two arms are connected by at least one rear arch configured to cover a rear portion of the user's leg, preferably a portion of the user's leg located above the malleoli and in below the middle of the tibia. Preferably, the roll bar is configured to cover a lower rear portion of the user's leg, at the level of the lower part of the calf.

This allows the two arms to be joined and therefore considerably increases the rigidity of the rod in lateral bending. The lateral support of the foot is improved which limits pronation and supination movements. In addition, this strengthening of lateral support allows better gestural control and better proprioception.

According to one embodiment, the arms and the hoop form a unitary unitary piece. This allows in particular to effectively strengthen the stiffness of the upper without significantly increasing the weight and cost of the shoe.

According to one embodiment, the tightening band comprises a device for adjusting the length of the portion of the tightening band located between the upper ends of the arms and positioned so as to cover at least, and preferably only, one face front of said lower leg. This ensures good leg hold in relation to the tightening band. This therefore effectively maintains the foot in the shoe, while avoiding friction of the lower part of the leg. This finally allows to better adapt to the different leg morphologies of the users. Tightening is thus effective because it is adapted to the morphology of the user.

According to one embodiment, the tightening band comprises at least:

a first strip configured to cover in particular a front face of the leg and

- A second strip separate from the first strip and configured to cover in particular a rear face of the leg.

Each of the bands has two ends, each of the ends being rotatably mounted on an arm of the rod. This allows the tightening band to accompany the user's leg during relative movement of the foot with respect to the leg, without generating friction.

According to one embodiment, the tightening band forms a loop intended to completely surround said lower part of the user's leg. This allows for continuous contact between the tightening band and the leg which is more pleasant for the user.

According to one embodiment, the strip is composed of several sections assembled. This makes it possible to obtain locally adapted sections according to need. For example, you can have a reinforced section at the band joint to reduce the risk of wear. One can also have a more elastic and / or softer section in the sensitive areas of the leg, for example, at the level of the calf.

According to one embodiment, the tightening band comprises a damping element, facing the leg, and arranged at at least one of:

a portion of strip configured to cover in particular a rear face of the leg,

- the upper ends of the arms.

This improves comfort by providing a softer grip.

According to one embodiment, the damping element forms a damping layer. It is thus possible to obtain a comfortable strip with a reduced thickness.

According to one embodiment, the tightening strip is flexible, at least at the level of a portion of strip configured to cover a rear face of the leg. By being flexible, the band adapts better to the morphology of the leg, which improves shoe comfort. This is all the more important in sensitive areas of the leg such as the calf where the band squeezes against a muscle.

According to one embodiment, the tightening band is flexible enough to be deformed by the user's leg during operation.

According to one embodiment, the shoe comprises at least two pivot junctions, each pivot junction being configured to ensure the rotation of the tightening band on one of the arms. The shoe is configured to allow height and / or horizontal adjustment of the position of at least one of the pivot junctions with respect to at least one of the two arms.

Thus, the shoe allows an adjustment of the vertical and / or horizontal position of the tightening band relative to the arm and therefore to the sole assembly. The shoe thus makes it easy to adapt to the morphology of the user. This also allows you to configure a desired foot tilt.

BRIEF DESCRIPTION OF THE FIGURES

The aims, as well as the characteristics and advantages of the invention will emerge more clearly from the detailed description of embodiments of the latter which are illustrated by the following accompanying drawings in which:

- Figure 1 is a side view (lateral side) of an example of a shoe according to a non-limiting embodiment of the invention.

- Figure 2 is a view of the rear of the shoe illustrated in Figure 1.

- Figure 3 is a first perspective view of the shoe illustrated in Figure 1, the perspective being mainly taken from above and from the medial side of the shoe.

- Figure 4 is a second perspective view of the shoe illustrated in Figure 1, the perspective being mainly taken from above and from the lateral side of the shoe.

- Figures 5a to 5c are three diagrams each illustrating a top view of an embodiment of a shoe holding device according to the invention.

The diagrams are given by way of examples and are not limitative of the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily on the scale of practical applications. In particular, the dimensions of the different parts of the holding device are not representative of reality.

DETAILED DESCRIPTION OF THE INVENTION

In the following description, use will be made of terms such as "upper", "lower", "high", "low", "front" and "rear". These terms must be interpreted in relation to the position that the shoe occupies on the foot of a user in normal posture, and the normal direction of advancement of a user.

The terms "longitudinal" and "transverse" are defined in relation to the limb concerned (foot, leg).

In the description, we consider the anatomical sense of the "leg", that is to say, the member extending from the knee to the ankle. The foot extends from the ankle to the ends of the toes. The ankle defines the joint between the leg and the foot. The ankle includes the medial and lateral malleoli.

In the present invention, when speaking of an element located above the malleolus, unless otherwise indicated, it is the highest malleolus, generally the medial or internal malleolus. When it comes to the malleoli, it is the medial and lateral malleoli of the same foot.

The sagittal plane corresponds to a plane passing through the longitudinal axis of the foot and the longitudinal axis of the leg.

The frontal plane corresponds to a plane perpendicular to the longitudinal axis of the foot.

The terms "lateral" and "medial", conventionally, are understood to mean respectively outward and inward. Thus, the medial side of a foot or a shoe is turned towards the medial side of the user's other foot or other shoe. To make the figures and the description easier to read, the reference “a” is assigned to the elements positioned on the lateral side and the reference “b” is assigned to the elements positioned on the medial side.

Note that the reference to "lateral support" of the foot or ankle means support in the frontal plane of the anatomical part concerned. The foot is then limited in its rotation around its longitudinal axis. Pronation and supination movements of the foot relative to the leg are thus limited.

In the description, the "shoe" is defined by a "sole" and a "upper". The "sole" is the lower part of the shoe between the foot and the ground. The "upper" is the upper part of the shoe enveloping the foot and possibly part of the ankle. The rod is secured to the peripheral edge of the sole assembly. Note that some elements of the shoe can form both part of the sole and part of the upper.

In the description, reference is made to positioning a first axis “substantially” parallel to a second axis, this means that the first axis is included in a 30 ° cone defined by an axis parallel to the second axis.

An embodiment will now be described with reference to FIGS. 1 to 4.

These figures illustrate a shoe 1 for the left foot. The shoe 1 comprises, in a conventional manner, a sole assembly 100 and a upper 200.

The sole 100 includes, in its lower part, a outsole 110. In this example, the outsole 110 is provided with at least one attachment element, not shown in the figures, and with reliefs 111.

The attachment element is configured to cooperate with a mechanism carried by a gliding device such as a ski, for example, a cross-country ski or a ski touring. For this type of practice, this cooperation allows rotation of the shoe relative to the sliding device about a transverse axis Y10 to the shoe, positioned at the front of the shoe. The transverse axis Y10 is perpendicular to the longitudinal axis X10 along which the foot mainly extends. In this example, the attachment element is produced by a shaft 20 carried by two lateral reliefs of the front part of the outsole 110 and extending transversely to the shoe, at the level of the central recess of the outsole 110 delimited by the two lateral reliefs.

The reliefs 111 allow better grip with the ground when the skier walks without his skis, especially in snow. In addition, these reliefs can also allow the shoe to be joined laterally with the sliding device when the shoe is positioned so as to cooperate with part of the binding mounted on the sliding device. In this configuration, the skier can then better guide the trajectory of his ski.

In this example, the rod 200 comprises an envelope 250 covering the foot and the ankle.

The envelope 250 has a lower portion 201 for covering the foot, from the heel to the toes. This lower portion 201 includes a vamp, quarter (s) and a rear buttress 210 of the rod 200. The casing 250 also includes an upper portion 202 for covering the ankle. This upper portion 202 therefore extends beyond the lower portion 201, to cover the malleolus 3 and go up along a lower part of the leg.

In the context of the present invention, the term “lower part of the leg” is understood to mean a part which extends from the ankle and which rises along the leg, stopping before or at the level of the middle of the tibia.

The upper 200 conventionally comprises an upper opening 203 for the insertion of the foot into the shoe. To facilitate this insertion of the foot, the rod 200 preferably comprises a cutout of the casing 250 extending from the opening 203 and over a central part of the kick, possibly being closed by a closing device 204, shown , in this nonlimiting example, by a zipper.

As described above, the rod 200 also includes a rear buttress 210, forming an element of the lower portion 201 of the casing 250. It has a lateral edge 211a facing outwards, and a medial edge 211b facing towards the other user's foot.

Advantageously, the buttress 210 has a rigidity greater than the other elements of the lower portion 201. According to one embodiment, it also has a rigidity greater than the upper portion 202 of the casing 250.

According to one embodiment, the lower portion 201 of the envelope 250 forms, with the exception of the buttress 210, a fabric, a canvas or a flexible film, this makes it possible to improve comfort. This lower portion can be made with one of the following materials: PA, PVC or PU.

According to one embodiment, the upper portion 202 of the envelope 250 forms a fabric, a canvas or a flexible film, this makes it possible to improve comfort. This upper portion can also be made with one of the following materials: PA, PVC or PU.

The lower portion 201 and / or the upper portion 202 may be composite by being made of several elements assembled together. Furthermore, an element of the lower portion 201 can also compose a part of the upper portion 202, the element then being astride between the two portions.

According to one embodiment, the rear buttress 210 is made rigid by its material. According to one embodiment, it is made of plastic or composite material such as a carbon weave.

Combined or alternatively, the buttress 210 can be made rigid by a reinforcing structure such as a stack of layers.

In this example, the rear buttress 210 extends from the sole assembly 100. Preferably, but not limited to, the rear buttress 210 is interrupted below the malleoli 3, this in order not to impede the mobility of the foot and do not put uncomfortable pressure on the malleoli. Likewise, the rear buttress 210 includes a clearance in its posterior upper part in order to limit the overlap of the Achilles tendon and bring more comfort.

The shoe 10 also includes a holding device 220, configured to provide reinforced lateral support for the foot, and more particularly for the ankle, while allowing flexions of the foot around a transverse axis at the ankle passing through the malleoli. medial and lateral. In other words, the holding device makes it possible to limit the movements of the foot in the frontal plane (pronation and supination movements) while allowing its movement in the sagittal plane.

The holding device 220 comprises at least one lateral arm 221a and at least one medial arm 221b. Each arm 221a, 221b comprises a lower end 2211a, 2211b articulated in rotation on the rear buttress 210, preferably on a lower part of the rear buttress 210. More precisely:

- The lateral arm 221a is articulated in rotation, preferably at its end 2211a on the lateral edge 211a of the rear buttress 210, around an axis Y224a. This axis Y224a is substantially parallel to the transverse axis Y10 of rotation of the foot during an unwound movement of the foot, in the sagittal plane,

- The medial arm 221b is articulated in rotation, preferably at its end 2211b on the medial edge 211b of the rear buttress 210, around an axis Y224b. This axis Y224b is substantially parallel to the transverse axis Y10 of rotation of the foot during an unwound movement of the foot, in the sagittal plane,

The axes Y224a and Y224b are substantially horizontal. They are referenced in Figures 1, 2 and 4.

In this example, the axes Y224a and Y224b are aligned to define an axis of articulation Y224 of the arms 221a, 221b relative to the rear buttress 210, substantially horizontal and parallel to the transverse axis Y10.

Each of the arms 221a, 221b also comprises an upper end 2212a, 2212b and a connecting portion 2213a, 2213b extending between the lower ends 2211a, 2211b and upper 2212a, 2212b.

The upper ends 2212a, 2212b are located vertically higher than the lower ends 2211a, 2211b.

A tightening band 230 is rotatably mounted at each upper end 2212a, 2212b.

This tightening strip 230 connects the lateral arms 221a and medial 221b.

This tightening strip 230 is preferably located in a lower part of the leg.

The tightening band 230 covers at least a portion of the leg. It can cover the front and back of the leg as shown in Figures 1 to 5c. Alternatively, this tightening strip 230 can cover or be applied only on the front or rear or only on the front or rear and a lateral or medial part of the leg, this without covering the entire periphery of the leg. Thus, in this embodiment (not illustrated) the tightening strip 230 does not have a closed periphery around the leg.

The tightening band is articulated in rotation at the upper ends 2212a, 2212b of the arms 221a, 221b, around axes Y225a, Y225b substantially horizontal. These axes Y225a, Y225b are substantially parallel to the transverse axis Y10 of rotation of the foot during the unwinding of the foot, that is to say a rotation which takes place in the sagittal plane.

The axes Y225a and Y225b are referenced in Figures 1, 3, 4 and 5a to 5c.

In this example, the axes Y225a and Y225b are aligned to define an axis of articulation Y225 of the tightening band 230 relative to the arms 221a, 221b, substantially horizontal and parallel to the transverse axis Y10.

The axes Y224a, Y224b, Y225a, Y225b are substantially parallel. When the foot flexes relative to the leg in the sagittal plane, the arms 221 a, 221 b tilt and carry with them the tightening band 230 which accompanies the lower part of the leg. The tightening band 230 pivots relative to the arms 221a, 221b to maintain itself in the same tightening zone on the leg. The friction between the tightening strip 230 and the lower part of the leg is limited, even harmful.

The shoe thus provides improved support and comfort.

The distance D between one of the axes of rotation Y224a, Y224b and one of the axes of rotation Y225a, Y225b of the upper end is between 6 and 20 cm. This allows sufficient movement of the leg tightening zone when the foot is unwound.

The holding device 220 is configured so that the arms 221a, 221b are slightly deformable in the frontal plane, that is to say that they are slightly deformable under the effect of a transverse force in a direction Y. In particular, their lower ends 2211a, 2211b have little or no play transversely. They are articulated with only one degree of rotation on the rear buttress 210. However, in this example, the latter is relatively rigid and forms a rear part of the sole assembly 100.

Thus, a force applied transversely by the leg to the tightening band 230 is transmitted with little or no deformation up to the sole assembly 100, even up to the sliding device on which the shoe 1 is fixed.

Consequently, the foot is held firmly in the gliding device in its pronation and supination movements. This allows better lateral control of the guidance of the sliding device via shoe 10 as well as better proprioception.

Preferably, the rigidity of the arms 221a, 221b is defined by at least one of the following characteristics:

- a choice of materials. For example, we will choose a material with a modulus of elasticity greater than 150 MPa,

a thickness ep of between 0.4 and 5 mm (10 ^-3 meters), the thickness ep being taken in a direction substantially parallel to the transverse axis Y of the shoe,

- a height H of between 60 and 200 mm (10 ³ meters), the height H being taken in a vertical direction Z,

- a width L of between 10 and 50 mm (10 ^-3 meters), the width being taken in a longitudinal direction X,

- shapes whose curvatures increase rigidity.

This arm dimensioning makes it possible to increase the rigidity of the holding device 220 while retaining a very limited weight.

According to one embodiment, the arms are made of plastic or a composite material such as a carbon weave.

According to an embodiment such as that illustrated, the holding device 220 comprises a reinforcing arch 222.

This arch 222 connects the arms 221a, 221b. It is separate from the tightening strip 230. It is rigid. For each of the arms 221a, 221b, the junction between the arch 222 and an arm is positioned between the upper end 2212a, 2212b of this arm and an axis parallel to the transverse axis Y10 passing through the malleolus 3 with regard to this arms.

Advantageously, the arch 222 connects the two arms 221a, 221b at their upper portion, that is to say at their portion located between their upper end 2212a, 2212b and halfway between their upper ends 2212a , 2212b and below 2211a, 2211b. This further strengthens the rigidity of the holding device 220.

The arch 222 is shaped so as to come opposite the rear of the leg, more precisely the lower rear part of the leg. Thus the arch 222 covers at least part of the leg which is turned towards the rear. Preferably, the arch 222 covers the rear part of the leg, at an angle of at least 160 °.

According to the illustrated embodiment, the hoop 222 has a central portion 2221 between the two arms 221a, 221b and ends 2222a, 2222b which connect the central portion 2221 to each of the arms 221a, 221b. As illustrated, the hoop 222 can have two or more ends 2222a, 2222b for each of the arms 221a, 221b. The lateral ends 2222a define between them at least one opening 223a. Likewise, the medial ends 2222b define between them at least one opening 223b. This configuration of the hoop 222 and these openings 223a, 223b makes it possible to increase the rigidity of the holding device 220 while presenting a limited weight.

Alternatively, the shoe can include several parallel arches.

According to one embodiment, the arms 221a, 221b and the hoop 222 form a unitary piece. Preferably, it is obtained by injection or molding. It can thus have a high rigidity while presenting a reduced cost.

Preferably, the arms and the arch form a sufficiently rigid piece to prevent a user from bending his foot in a frontal plane (movements of supination and pronation) or at least to limit the amplitude of such a movement, at least when the foot is lifted off the ground. Preferably, the arms and the hoop form a piece that is rigid enough to prevent or limit the amplitude of such a movement even when the foot is on the ground and the user applies part or all of his weight to his foot.

Preferably, in order to improve the comfort of the user, the upper portion 202 of the casing 250 extends higher than the tightening band 230.

According to one embodiment, the tightening band 230 extends higher than the arch 222 and the arms 221a, 221b, this making it possible to prevent the leg from coming into contact with rigid parts which would adversely affect comfort.

With reference to FIGS. 5a to 5c, several embodiments of the tightening band

230 will now be described.

In the embodiments of FIGS. 5a and 5b, the tightening band 230 comprises:

a first strip 231 intended to cover a front part of the leg,

- A second strip 238 intended to cover a rear part of the leg.

According to these nonlimiting embodiments, these first 231 and second 238 bands are distinct. They are each articulated, preferably at each of their two ends, in rotation on the lateral arm 221a and the medial arm 221b. Preferably, they are articulated in rotation around the same axes Y225a, Y225b by pivot junctions 240a, 240b.

Thus, the pivot junction 240a allows the rotation of one end of the first strip 231 relative to the lateral arm 221a, and the rotation of one end of the second strip 238 relative to the lateral arm 221a.

Similarly, the pivot junction 240b allows the rotation of one end of the first strip

231 relative to the medial arm 221b, and the rotation of one end of the second band 238 relative to the medial arm 221b.

Preferably, the lateral pivot junction 240a is formed by a shaft and two stops materialized for example by a shaft 241a of the rivet and two heads 242a of the rivet.

If it is preferably the same for the medial pivot junction 240b.

Other pivot joints are naturally possible, such as a screw / nut assembly.

Advantageously, the internal part of the pivot junctions 240a, 240b is as fine as possible so as not to create a relief, oriented towards the leg, which can generate a hard point located on the leg. This punctual contact is likely to create discomfort to the user.

According to one embodiment, at least one of the two bands 231,238 is flexible for more comfort. At least one of these two bands can have a certain elasticity without this being essential.

According to one embodiment, the first strip 231 is more flexible than the second strip 238. This makes it possible to form a firm support at the rear face of the leg, thus offering good reactivity of the shoe 10 during the movements of the leg and foot. Furthermore, the first strip 231 offers improved support at the level of the tibia. However, it is often at the level of the tibia that users can encounter comfort problems.

According to one embodiment, the tightening strip 230 comprises a device for adjusting its length. In this example, the adjustment device makes it possible to adjust the length of the first strip 231 situated opposite the front part of the leg, that is to say between the two arms 221a, 221b.

As in the example illustrated in FIGS. 1 to 4 or in FIGS. 5a to 5c, the first strip 231 comprises:

a fastener 235 supporting a loop 234, the fastener being mounted articulated on the medial arm 221b around the axis of rotation Y225b,

a link 232 mounted articulated on the lateral arm 221a around the axis of rotation Y225a,

The adjustment device comprises the loop 234 allowing the link 232 of the band 5 231 to pass through this loop 234 to define:

an internal portion 233a of the link 232 coming to be placed facing the leg and

- An external portion 233b of the link 232 facing outwards and which thus forms a free strand for attachment, this free strand being able to be placed in contact with the portion 233a.

These two portions 233a and 233b of tape can be fixed to each other to maintain the desired tightening. For this, provision is made to cover their opposite faces with complementary surfaces which together form a hooking interface 237: for example hook-and-loop surfaces of the hook / loop or Velcro® type, adhesive strips or any other means allowing a removable connection.

In this example, these two portions 233a and 233b overlap over the entire length 15 of the outer portion.

In the illustrated embodiments, the loop 234 is turned inward, that is to say that it is positioned on the medial side of the shoe 10. Thus, to obtain the desired tightening, the user pulls the portion external 233b of link 232 to the outside. This tightening gesture is natural and ergonomic.

This arrangement is not limiting. For example, the buckle can be placed on the lateral side of the shoe 10. This makes it possible to prevent the buckle 234 or the free strand formed by the external grip portion 233b from coming into contact with the other shoe, which could cause unintentional loosening.

According to one embodiment, a comfort element 239 is provided positioned between the tightening strip 230 and the user's leg. This comfort element 239 is carried by the second band 238 and / or the first band 231.

Its function is to improve the comfort of the leg / tightening band contact 230. This is all the more advantageous since the comfort element 239 is associated with a flexible but non-elastic tightening band 230, this in order to provide a good leg support and good morphological adaptation.

According to an embodiment illustrated in FIG. 5a, this comfort element 239 is shown on the second strip 238 only, without this being limiting.

More generally, whatever the configuration of the tightening strip 230, it is advantageous to place at least part of the comfort element 239 on a portion 35 236 located opposite the rear face of the leg.

According to an embodiment such as, for example, that illustrated in FIG. 5a, the comfort element 239 covers at least one of the heads 242a, 242b with rivets turned towards the leg, this for more comfort and to smooth the possible projection formed by this head 242a, 242b.

The comfort element 239 is for example formed from foam, whether or not covered with a layer of fabric. Thus, it forms a shock absorbing layer. Preferably it is intended to come into direct contact with the user's leg or the clothes that the latter is wearing.

FIGS. 5a and 5b propose two variants concerning the relative arrangement of the first strip 231 and the second strip 238.

In FIG. 5a, the second strip 238 covering the rear of the leg is assembled, at the junctions 240a, 240b, on the internal face of the arms 221a, 221b, that is to say, the face oriented towards the leg, while the first strip 231 is assembled, at these junctions 240a, 240b, on the external face of the arms 221a, 221b, that is to say, the face facing outward, opposite the face internal.

More precisely, starting from the leg and moving transversely from the latter, we meet at the lateral pivot 240a and medial 240b junctions:

- the end of the second strip 238,

- the lateral arm 221a or medial 221b,

- the end of the first strip 231.

This configuration makes it possible to position a part of the second strip 238, that covering the rear part of the leg, between the arms and the leg. However, this part can more easily carry a comfort element 239 because there is no length adjustment system. Consequently, the addition of a cushioning layer intermediate between the tab and the leg improves the carrying comfort by eliminating contact of the leg with a rigid part that constitutes the arms.

Figure 5b illustrates an alternative inverse solution. In this case, it is the first strip 231 which is located further inside than the second strip 238 at the pivot junctions 240a, 240b. The second strip 238 covering the rear of the leg is assembled, at the junctions 240a, 240b, on the external face of the arms 221a, 221b, while the first strip 231 is assembled, at the junctions 240a, 240b, on the internal face of the arms 221a, 221b.

Thus, starting from the leg and moving outwards, we meet at the level of the lateral pivot 240a and medial 240b junctions:

- the end of the first strip 231,

- the lateral arm 221 a or medial arm 221 b,

- the end of the second strip 238.

This construction allows more effective tightening because the first band 231 ensuring the length adjustment of the tightening band 230 is positioned as close as possible to the leg. In addition, it exerts no force on the arms 221a, 221b tending to press the arms 221a, 221b on the leg, which reduces the pressure exerted on the leg by the arms 221a, 221b.

FIG. 5c illustrates another embodiment in which the tightening band 230 does not consist of several separate parts each articulated on the arms 210a, 210b.

In this alternative embodiment, the tightening strip 230 is continuous and covers the entire periphery of the lower part of the leg. It is rotatably mounted on the arms 221a, 221b around the axes Y225a, Y225b. For this, provision is made, as for the embodiments illustrated in FIG. 5a, 5b, of the pivot junctions 240a, 240b.

It can be made of a single piece strip. Alternatively and as illustrated in FIG. 5c, it is formed of several sections 231 ’, 231”, 231 ”’ assembled for example by sewing.

In this example, the continuous tightening strip 230 is placed between the arms 221a, 221 b and the user's leg.

In each of the embodiments described above, the tightening strip 230 is preferably flexible and preferably non-elastic.

Preferably, it is mounted entirely removable on each of the arms, so that it can be replaced or adapted according to the morphology of the leg. In this case, the pivot junctions 240a, 240b are preferably removable to facilitate this replacement. It is then possible to replace the tightening strip 230 or a portion thereof by another tightening strip or another portion more suited to the morphology of the user's leg.

In particular, it is desirable that at least the portion of tightening band 230 integrating the tightening adjustment device is removable.

According to one embodiment, the vertical position of the pivot junction 240a, 240b on the arms 221a, 221b is adjustable.

In the embodiments of FIGS. 5a and 5b, at least one of the bands 231, 238 and preferably the two bands 231, 238 are adjustable in height relative to the arms 221a, 221b. This allows to adapt to the morphology of the user. For example, provision may be made for the junction 240a, 240b to have a shaft 241a, 241b which can translate into a vertical slot made on the arm 221a, 221b.

Combined or alternatively, it can also be provided that the horizontal position of the pivot junction 240a, 240b on the arms 221a, 221b is adjustable.

In view of the above description, it is clear that the invention provides a robust and effective solution for improving the comfort and the weight of the shoe while effectively keeping the foot in the frontal plane and retaining good mobility in the plane. sagittal.

According to another aspect, the invention relates to an assembly comprising a shoe according to the invention and a sliding device comprising a mechanism configured to cooperate with the shoe so as to allow rotation of the shoe around said transverse axis.

The invention is not limited to the embodiments previously described and extends to all the embodiments covered by the claims.

REFERENCES

Malleolus

10. Shoe

100. Sole

110. Outsole

111. Reliefs

200. Stem

201 Lower portion

202 Upper portion

203 Upper opening

204 Closing device

210. Rear buttress

211a. Side edge of rear buttress

211 b. Medial edge of the rear buttress

220. Holding device

221a. Side arm

2211a. Lower end of side arm

2212a. Upper end of side arm

2213a. Side arm connection portion

221b. Medial arm

2211 b. Lower end of the medial arm

2212b. Upper end of the medial arm

2213b. Connection portion of the medial arm

222. Roll bar

2221. Central portion of the hoop

2222a Lateral ends of the hoop

2222b Medial ends of the arch

223a Side opening

223b Medial opening

230. Clamping band

231. first strip

232 link

233a internal portion of the link

233b external portion of the link

237. teaser interface

234 loop

235 buckle clip

238. second tape

239. damping element

236 portion of tape opposite a rear leg 230 ’, 230’, 230 ’’ sections of tightening tape

240a. Lateral pivot joint

241a. Side rivet shaft

242a. Lateral rivet head

240b. Medial pivot junction

241a. Medial rivet tree

242a. Medial rivet head

250. Envelope

Claims (10)

1. Sports shoe (10) intended to be mechanically connected to a sliding device, the shoe (10) comprising: - a sole assembly (100) comprising at least one attachment element (111) intended to cooperate with a mechanism carried by the sliding device so as to allow rotation of the boot (10) around a transverse axis (Y10 ) which is perpendicular to a longitudinal axis (X10) along which the sole assembly mainly extends, - a rod (200) comprising at least: • a rear buttress (210), • a lateral arm (221a) and a medial arm (221b), each arm (221a, 221b) comprising a lower end (2211a, 2211b), an upper end (2212a, 2212b) and a connecting portion (2213a, 2213b) connecting the lower (2211a, 2211b) and upper (2212a, 2212b) ends, the lateral arm and the medial arm (221a, 221b) being each mounted at their lower end (2211a, 2211b), in rotation respectively on a lateral edge (211a) and a medial edge (211b) of the rear buttress (210), and extending upwards so as to move away from the sole assembly (100) up to their end upper (2212a, 2212b), • at least one tightening band (230) connecting the upper ends (2212a, 2212b) of the arms (221a, 221b) and configured so as to cover a rear and / or front part of the leg the user, characterized in that the clamping band (230) is rotatably mounted on the upper ends (2212a, 2212b) of the arms (221a, 221b) around an axis substantially parallel to the transverse axis (Y10). 2. Shoe (10) according to the preceding claim, wherein the upper comprises at least one hoop (222) connecting the arms (221a, 221b) so as to cover a rear portion of the user's leg. 3. Shoe (10) according to any one of the two preceding claims, wherein the arms (221a, 221b) and the hoop (222) form a unitary piece. 4. Shoe (10) according to any one of the preceding claims, in which the tightening band (230) comprises a device for adjusting the length of the portion (233a) of the band which is situated between the upper ends ( 2212a, 2212b) of the arms (221a, 221b) and which is positioned so as to cover at least one front face of the leg. 5. Shoe (10) according to any one of the preceding claims, in which the tightening strip (230) comprises at least a first strip (231) configured to cover a front face of the leg and a second strip (238) which is distinct from the first band (231) and which is configured to cover a rear face of the leg, each of the first and second bands (231, 238) having two ends, each of the ends being rotatably mounted on an arm (221a, 221b ) of the rod (200). 6. Shoe (10) according to any one of claims 1 to 4, wherein the tightening band (230) forms a loop intended to completely surround said lower part of the user's leg. 7. Shoe (10) according to the preceding claim, wherein the tightening band (230) is composed of several sections (230 ’, 230”, 230 ’”) assembled. 8. Shoe (10) according to any one of the preceding claims, in which the tightening band (230) comprises a damping element (239), turned towards the leg and arranged at at least one of : a portion (236) of strip configured to cover in particular a rear face of the leg, - the upper ends (2212a, 2212b) of the arms (221 a, 221b). 9. Shoe (10) according to any one of the preceding claims, in which the tightening strip (230) is flexible, at least at the level of a portion (236) of strip configured to cover a rear face of the leg. 10. Shoe (10) according to any one of the preceding claims, comprising at least two pivot junctions (240a, 240b), each pivot junction (240a, 240b) being configured to ensure the rotation of the tightening band (230) on one of the arms (221a, 221b), the shoe (10) being further configured to allow height and / or horizontal adjustment of the position of at least one of the pivot junctions (240a, 240b) relative to to the arm (221a, 221b) associated therewith. 1/6 ο ο CM