EP3415026A1 - Sport shoe intended to be connected to a sport device - Google Patents

Abstract

Sports shoe (1) intended to be mechanically connected to a sports machine comprising: - A shell (20) monobloc, rigid material, composed ~ A plate (21) delimited by an upper surface (211) and a lower surface (212), the upper surface being intended to cover the sole of the user's foot, the plate comprising a front portion (21a) extending from the front end of the plate a quarter of its total length (L21) and a rear portion (21b) extending from the rear end of the plate over one half of its length Total, ~ A side wall (22) and a medial wall (23), each wall extending from the side of the upper surface of the plate, in the rear part of the plate, since, respectively, a side edge (215) and medial (216) of the plate, each wall (22, 23) being delimited by an inner surface (221, 231) and an outer surface (222, 232), ~ No wall extending from the side of the upper surface of the plate from an edge of the plate in its front part, - A rod (2) comprising a flexible panel (30) for covering at least a portion of the top of the user's foot, the flexible panel being attached to the shell. The flexible panel covers a peripheral band (2121) of the lower surface of the front portion of the plate, a portion (25) of the outer surface of the side wall, and a portion (25) of the outer surface of the medial wall.

Description

The invention relates to a sports shoe intended to be mechanically connected to a sports machine, including a gliding device. It relates more particularly to a shoe allowing a good unwinding of the foot, especially in the metatarsal area.

The invention will find particularly advantageous for cross-country skiing, a sport in which the mobility of the foot must make it possible to perform an alternative step, a skater's step or skating. The invention is also applicable to ski touring, skiing on the road or the practice of snowshoeing.

For the practice of these winter sports, the shoe must meet many requirements. In particular, the shoe must be able to flex at the level of the metatarsal area to facilitate the actions of the skier during the pushing phases, especially when performing alternative steps. Furthermore, in order to be effective, such a shoe must be lightweight and must be worn for several hours without harming or annoying the user.

Conventionally, a bottom shoe comprises a sole and a rod. Usually, for this type of shoe, the sole comprises several layers, and in particular, a first flat mounting, covering a outsole. In many constructions, flaps of the rod are inserted between the first mounting and the outsole, at the peripheral level of these two layers. The flaps are then glued on the underside of the first mounting. The first mounting is therefore used to maintain the flaps in position to ensure a sealed continuity between the sole and the rod.

This structure is, for example, described in the application EP2060196 . In the document the bottom shoe further comprises a shell formed of a plate and a peripheral wall at the heel so as to form a buttress. In this example, the shell is interposed between, on the one hand, the outsole and, on the other hand, the flaps of flexible walls constituting the rod and a first mounting. The "sole" then comprises the following successive layers, from the ground to the foot: the outsole, the plate of the shell, the flaps (locally), the first assembly. On the other hand, the "stem" comprises the following successive layers, from the outside to the foot: the peripheral wall of the shell (locally), flexible walls. Thus, the foot is never in contact with the hull. There is always an element, the first of assembly or a flexible wall, fixed, indemontably, on the hull. This construction comprises a multitude of elements to assemble which makes its manufacture complex. In addition, the use of a multitude of elements is a determining factor for the weight of the shoe. On the other hand, by fixing the flexible walls inside the peripheral wall of the shell, the upper edge of the peripheral wall of the shell forms a flange conducive to the accumulation of water or snow at the the junction between the shell and the flexible walls. This water retention can penalize the waterproofness of the shoe, water can seep between the shell and the flexible walls.

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

An object of the invention is to provide a lightweight shoe.

One goal is to offer an economical shoe, easy to achieve.

Another goal is to provide a shoe with a good seal.

• une coque monobloc, en matériau rigide, composée
  • ∘ d'une plaque délimitée par une surface supérieure et une surface inférieure, la surface supérieure étant destinée à couvrir la plante du pied de l'utilisateur, la plaque comprenant une partie avant s'étendant, depuis l'extrémité avant de la plaque, sur un quart de sa longueur totale et, une partie arrière s'étendant, depuis l'extrémité arrière de la plaque, sur une moitié de sa longueur totale,
  • ∘ d'une paroi latérale et d'une paroi médiale, chaque paroi s'étendant du côté de la surface supérieure de la plaque, dans la partie arrière de la plaque, depuis, respectivement, un bord latéral et médial de la plaque, chaque paroi étant délimitée par une surface interne et une surface externe,
  • ∘ d'aucune paroi s'étendant du côté de la surface supérieure de la plaque depuis un bord de la plaque dans sa partie avant,
• une tige comprenant un panneau souple destiné à couvrir au moins une partie du dessus du pied de l'utilisateur, le panneau souple étant fixé à la coque.

For this, the invention relates to a sports shoe intended to be mechanically connected to a sports machine comprising:

• a one-piece shell, made of rigid material, composed of
  • ∘ a plate delimited by an upper surface and a lower surface, the upper surface being intended to cover the soles of the user's foot, the plate comprising a front part extending from the front end of the plate, over a quarter of its total length and a rear portion extending from the rear end of the plate over one half of its total length,
  • ∘ of a lateral wall and a medial wall, each wall extending from the side of the upper surface of the plate, in the rear part of the plate, from, respectively, a lateral and medial edge of the plate, each wall being delimited by an inner surface and an outer surface,
  • ∘ no wall extending from the side of the upper surface of the plate from an edge of the plate in its front part,
• a rod comprising a flexible panel for covering at least a portion of the top of the user's foot, the flexible panel being attached to the shell.

The flexible panel covers a peripheral band of the lower surface of the front portion of the plate and a portion of the outer surface of the lateral and medial walls of the shell.

Thus, with this construction, the first mounting is no longer necessary because it is performed directly by the hull plate, in particular, at its front portion. At this point, the flexible panel is attached to the peripheral strip of the lower surface of the front portion of the plate. By removing the first assembly, then lightens the shoe. In addition, at the side and medial walls of the shell, the flexible panel covers a portion of the outer surface of these walls. This means that the flexible panel is not superimposed entirely on the hull in its rear part. Consequently, this makes it possible to use a smaller area of flexible panel and thus to lighten the structure further. Furthermore, by fixing the flexible wall on the outside of the shell, this improves the waterproofness of the shoe. Indeed, it removes any edge likely to be a source of water retention.

• le panneau souple comprend plusieurs pièces assemblées pour former une enveloppe destinée à couvrir le dessus du pied et la cheville de l'utilisateur,
• le panneau souple est constitué d'une toile, d'un tissu ou d'un film,
• le panneau souple comprend un revêtement complémentaire au niveau de l'extrémité avant de la chaussure,
• la coque comprend également une paroi arrière s'étendant du côté de la surface supérieure de la plaque depuis un bord arrière de la plaque et reliant la paroi latérale à la paroi médiale, selon un mode de réalisation, la paroi arrière est moins haute que les parois latérale et médiale.
• le panneau souple est collé uniquement sur la coque,
• la chaussure comprend un chausson amovible destinée à se loger entre la coque et le panneau souple,
• l'épaisseur de la partie avant de la plaque est inférieure à 2,5 millimètres,
• la coque est réalisée en matériau rigide ayant un module d'élasticité supérieur à 2 GPa,
• la plaque composant la coque est galbée uniquement selon une direction longitudinale,
• la chaussure comprend une semelle d'usure fixée sur la surface inférieure de la plaque de la coque et/ou une partie du panneau souple recouvrant la bande périphérique de la surface inférieure de la partie avant de la plaque,
• la semelle d'usure comprend :
  • ∘ un élément d'accroché apte à coopérer avec un mécanisme de fixation porté par un engin de sport afin de solidariser la chaussure avec l'engin de sport tout en permettant la rotation de la chaussure, par rapport à l'engin de sport, autour d'un axe transversal à l'avant de la chaussure, le mécanisme de fixation permettant la désolidarisation de la chaussure avec l'engin de sport et,
  • ∘ des moyens de guidage, positionnés sous la plaque de la coque, aptes à coopérer avec un guide porté par l'engin de sport afin de limiter uniquement le déplacement transversal du talon de la chaussure,
• l'élément d'accroché est réalisé par un arbre porté s'étendant transversalement à la chaussure,
• la chaussure comprend une entretoise destinée à s'intercaler entre la surface inférieure de la partie avant de la coque et une surface supérieure de la partie avant de la semelle d'usure.

Optionally, the invention may have any of the following optional features taken alone or in combination:

• the flexible panel comprises several pieces assembled to form an envelope intended to cover the top of the foot and the user's ankle,
• the flexible panel consists of a fabric, a fabric or a film,
• the flexible panel comprises a complementary coating at the front end of the shoe,
• the shell also includes a rear wall extending on the side of the upper surface of the plate from a rear edge of the plate and connecting the side wall to the medial wall, according to one embodiment, the rear wall is lower than the lateral and medial walls.
• the flexible panel is stuck only on the hull,
• the shoe includes a removable boot designed to fit between the shell and the flexible panel,
• the thickness of the front part of the plate is less than 2.5 millimeters,
• the shell is made of rigid material having a modulus of elasticity greater than 2 GPa,
• the plate composing the shell is curved only in a longitudinal direction,
• the shoe comprises a sole plate attached to the lower surface of the shell plate and / or a portion of the flexible panel covering the peripheral strip of the lower surface of the front portion of the plate,
• the outsole includes:
  • ∘ a hooked element adapted to cooperate with a fastening mechanism carried by a sports machine to secure the shoe with the sports machine while allowing the rotation of the shoe, compared to the sports machine, around a transverse axis at the front of the shoe, the fastening mechanism for separating the shoe with the sports gear and,
  • Guide means, positioned under the hull plate, adapted to cooperate with a guide carried by the sports machine to limit only the transverse displacement of the heel of the shoe,
• the hooked element is made by a carried shaft extending transversely to the shoe,
• the shoe includes a spacer for interposing between the lower surface of the front portion of the shell and an upper surface of the front portion of the outsole.

• la figure 1 est une vue en perspective d'un mode de réalisation d'une chaussure de sport selon l'invention, la perspective étant prise du dessus et depuis le côté médial de la chaussure ;
• la figure 2 est une vue de côté (côté médial) de la chaussure illustrée à la figure 1;
• la figure 3 est une vue éclatée des composants de la chaussure illustrée à la figure 1, les composants étant représentés de manière simplifiée ;
• la figure 4 est une vue de dessous de la coque de la chaussure illustrée à la figure 1 ;
• la figure 5 est une vue de côté de la coque de la figure 4 ;
• la figure 6 est une vue de dessus de la coque de la figure 4 ;
• la figure 7 est une vue en coupe longitudinale partielle, de la partie avant de la chaussure illustrée à la figure 1, selon VII-VII de la figure 8 ;
• la figure 8 est une vue en coupe selon VIII-VIII de la figure 7.

Embodiments of the invention will now be described, by way of nonlimiting examples, with reference to the accompanying drawings, in which:

• the figure 1 is a perspective view of an embodiment of a sports shoe according to the invention, the perspective being taken from above and from the medial side of the shoe;
• the figure 2 is a side view (medial side) of the shoe shown in figure 1 ;
• the figure 3 is an exploded view of the components of the shoe shown in the figure 1 the components being represented in a simplified manner;
• the figure 4 is a bottom view of the shell of the shoe shown in the figure 1 ;
• the figure 5 is a side view of the hull of the figure 4 ;
• the figure 6 is a top view of the hull of the figure 4 ;
• the figure 7 is a partial longitudinal sectional view of the front part of the shoe illustrated in FIG. figure 1 , according to VII-VII of the figure 8 ;
• the figure 8 is a sectional view according to VIII-VIII of the figure 7 .

In the rest of the description, terms such as "superior", "lower", "up", "down", "forward" and "backward" will be used. These terms must be interpreted in relation to the position that the shoe occupies the foot of a user in normal posture, and the normal direction of advancement of a user.

The terms "lateral" and "medial" conventionally mean that they are turned outward and inward, respectively. Thus, the medial side of a foot or shoe is turned to the medial side of the other foot or the other shoe of the user.

The term "longitudinal" refers to a heel-toe direction while the term "transverse" refers to a lateral-medial direction and therefore substantially perpendicular to the longitudinal direction.

In the description, the "shoe" is defined by a "sole" and a "stem". The Figures 7 and 8 present the distinction between these two parts of the shoe. The "sole" is the lower part of the shoe between the foot and the ground. The "stem" is the upper part of the shoe wrapping the foot and possibly part of the ankle. The rod is secured to the peripheral edge of the sole. Note that some elements of the shoe can form both a part of the sole and a part of the stem.

An embodiment will now be described with reference to Figures 1 to 8 .

These figures illustrate a sport shoe 1 for right foot. The shoe 1 comprises, in a conventional manner, a rod 2 and a sole assembly 3.

More specifically, and as illustrated in figure 3 , the sports shoe 1 comprises a outsole 10, a shell 20, a composite flexible panel 30, a spacer 40 and a removable boot 50. Thus, for this construction, the sole assembly 3 is defined by the elements intended to be positioned under the sole of the foot, namely, the outsole 10, a portion 21 of the shell 20, the spacer 40, flaps 33 bordering the lower front portion of the flexible panel 30 and the bottom wall 52 of the liner 50 Furthermore, the rod is defined by parts 22, 23, 24 of the shell, most of the flexible panel 30 and the envelope 51 of the liner 50 with the exception of the bottom wall 52.

According to this embodiment, the outsole 10 is delimited vertically by a lower face 12, intended to be in contact with the ground or a sports machine, and an upper face 11, opposite to the lower face, and intended for be in contact with another element of the assembly that will be described later. The outsole 10 is provided with at least one hooking element 13 and, on the side of the lower face 12, lateral reliefs 14 defining a central groove 15 extending longitudinally to the shoe. The hook member 13 is adapted to cooperate with a fastening mechanism carried by a sports machine such as a ski, for example, a cross-country ski or a ski touring, or such as a snowshoe. For this type of practice, this cooperation makes it possible to secure the shoe with the sports apparatus while allowing the shoe to rotate relative to the sports apparatus, around a transverse axis Y1 to the shoe, positioned at the level of the body. from the front of the shoe. The fixing mechanism allows the separation of the shoe with the sports gear. Such a mechanism is, for example, described in the document FR2638974 .

In this example, the hooking element 13 is made by a shaft borne by two lateral reliefs 14 of the anterior part of the outsole 10 and extending transversely to the boot, at the level of the central groove 15 of the the outsole 10 delimited by the two lateral reliefs 14. Other hooking elements can be envisaged as soon as they define a pivot axis of the shoe. For example, the outsole may comprise, on each side, lateral / medial, its anterior portion, an outer recess for receiving a lateral pivot, respectively right and left, of a fastening mechanism. Thus, the two lateral pivots of the mechanism define the transverse axis of rotation of the shoe when they are engaged with the outer recesses of the sole. These external recesses can be made in an insert attached to the sole.

In this example, the central groove 15 delimited by the lateral reliefs 14 adapted to cooperate with a guide carried by the sports machine to limit only the transverse displacement of the heel of the shoe. This cooperation occurs when the shoe is in a configuration where the outsole, and more particularly the lower face 12, bears, directly or indirectly, on the sports machine. In this configuration, the skier can then better guide the trajectory of his ski. The groove 15 bordered by the lateral reliefs 14 thus define guiding means, positioned under the foot. The guide is for example a guide edge. Alternatively, it is possible to envisage other guiding means. For example, the outsole may include a plurality of longitudinal grooves instead of a single central longitudinal groove. In this case, these longitudinal grooves are able to cooperate respectively with as many guide edges provided on the top of the ski. Reverse construction can also be considered. One or more grooves are provided on the top of the ski so as to receive guide edges formed on the underside of the outsole.

According to one variant, the outsole may be composed of two distinct inserts, for example a front insert carrying the hooking element 13 and a rear insert incorporating the guiding means such as a longitudinal central groove intended to cooperate with each other. with a guide edge carried by the sports machine.

According to the invention, the shell 20 has specific characteristics, as illustrated in the Figures 4 to 6 .

The shell 20 is in one piece and is made of rigid material. For the purposes of the invention, a rigid material is a material having sufficient stiffness to obtain a self-supporting shell structure. Generally, the modulus of elasticity of a rigid material is greater than 2 GPa. Such a material may be a composite material comprising fibers of synthetic and / or natural materials embedded in a matrix. Alternatively, such a material may be a plastic material, such as a polymer, optionally filled with particles and / or cut fibers. However, fabrics, fabrics or films are not considered as rigid materials because they do not have sufficient strength to be self-supporting without exerting a specific maintenance effort on these fabrics, fabrics or films.

• d'une plaque 21 délimitée par une surface supérieure 211 et une surface inférieure 212, la surface supérieure 211 étant destinée à couvrir la plante du pied de l'utilisateur, la plaque 21 comprenant une partie avant 21a s'étendant, depuis l'extrémité avant de la plaque, sur un quart de sa longueur totale L21 et, une partie arrière 21b s'étendant, depuis l'extrémité arrière de la plaque, sur une moitié de sa longueur totale L21,
• d'une paroi latérale 22 et d'une paroi médiale 23, chaque paroi 22, 23 s'étendant du côté de la surface supérieure 211 de la plaque 21, dans la partie arrière 21b de la plaque, depuis, respectivement, un bord latéral 215 et médial 216 de la plaque 21, chaque paroi 22, 23 étant délimitée par une surface interne 221, 231 et une surface externe 222, 232,
• d'aucune paroi s'étendant du côté de la surface supérieure 211 de la plaque 21 depuis un bord de la plaque dans sa partie avant 21a.

The hull 20 is composed of:

• a plate 21 delimited by an upper surface 211 and a lower surface 212, the upper surface 211 being intended to cover the sole of the user's foot, the plate 21 comprising a front portion 21a extending from the end before the plate, on a quarter of its total length L21 and a rear portion 21b extending from the rear end of the plate, on one half of its total length L21,
• a side wall 22 and a medial wall 23, each wall 22, 23 extending on the side of the upper surface 211 of the plate 21, in the rear part 21b of the plate, since, respectively, a lateral edge 215 and medial 216 of the plate 21, each wall 22, 23 being delimited by an inner surface 221, 231 and an outer surface 222, 232,
• no wall extending from the side of the upper surface 211 of the plate 21 from an edge of the plate in its front portion 21a.

The plate 21 is thus delimited, in width, by a medial peripheral edge 216 and a lateral peripheral edge 215, and in length, by a peripheral edge before 213 and a rear peripheral edge 214. It extends over a total length L21. It comprises an average thickness e21 which is preferably less than 2.5 mm in order to facilitate the bending of the plate. The plate 21 is not necessarily flat, it is advantageously curved. In order not to penalize the bending of the plate around a transverse axis, especially at the metatarsals, the plate is preferably curved only in a longitudinal direction. In other words, for each of its length portions, the plate has a substantially linear width. In its front portion 21a, the lower surface 212 comprises a lower peripheral band 2121 along the peripheral edge of the plate 21a, namely, a portion of the medial edge 216, the front edge 213 and a portion of the lateral edge 215. The lower peripheral band 2121 is not necessarily marked, it can be fictitious.

As previously described, the shell 20 comprises two upwardly extending walls from the rear portion 21b of the plate 21. A first side wall 22 extends from the side edge 215 in a direction normal to the upper surface 211 of the plate 21. It is defined by an outer surface 222 and an inner surface 221, these surfaces determining an average thickness e22 which is preferably less than 2.5 mm. A second medial wall 23 extends from the lateral edge 215, in a direction normal to the upper surface 211 of the plate 21. It is defined by an outer surface 232 and an inner surface 231, these surfaces determining an average thickness e23 which is preferably less than 2.5 mm. These two walls allow a good transverse support of the foot. With these walls, the user can maintain a foot position allowing effective transmission of effort to the sports machine. This is particularly the case when the skier takes a skater step. Preferably, the two walls are curved to match the lateral and medial morphology of the foot and, for some shoes, the lateral and medial malleolus. These left-handed shapes make it possible to improve the comfort of footwear, in particular by avoiding point contacts with the foot that can cause painful local pressure. The walls can also protect the malleolus against possible blows. In the example described, the walls are provided with means for fixing a collar 60, rotatable about a transverse axis positioned substantially at the axis of the malleoli. Alternatively, the shoe does not include a collar. The lateral and medial walls may be lower and may not cover the malleolus. Indeed, for certain sports practices, for example alternative skiing, the transverse support of the foot is less useful and does not require less lateral and medial recovery.

In this example, the shell also comprises a third rear wall 24, connecting the first side wall 22 to the second medial wall 23, in the rear part of the shell. The third rear wall 24 extends from the rear edge 214, in a direction normal to the upper surface 211 of the plate 21. Thus, the first side wall 22, the second medial wall 23 and the third rear wall 24 form a wall continue to the back of the hull. This continuous wall is intended to substantially surround the back of the foot, at the heel. This continuity, via the third rear wall 24, improves the rigidity of the first and second walls, which limits their bending. The third rear wall 24 is lower than the side walls 22 and medial 23. This notch allows not to cover the Achilles tendon. Thus, the foot can freely rotate around a transverse axis at the level of its malleoli without the shell comes in contact with the Achilles tendon. The comfort of use is then improved by avoiding a painful point contact in this sensitive area.

The first 22, second 23 walls and / or the third wall 24 comprise, on their outer surface 222, 232, an outer peripheral band 25 along the peripheral edge higher of these walls. This external peripheral band 25 is illustrated on the figure 3 . The outer peripheral band 25 is not necessarily marked, it can be fictitious.

According to the invention, no wall extends from the side of the upper surface 211 of the plate 21 from an edge of the plate in its front portion 21a. This means that there are no upwardly extending walls, from the front portion 21a of the plate 21, or from the lateral peripheral 215 and medial edges 216 of the front portion, or from the front peripheral edge 213 of the front part. In other words, the front portion of the shell forms only a plate characterized by an average thickness e21a which is preferably less than 2.5 mm. This plate corresponds to the front portion 21a of the plate. It is sized to position itself vis-à-vis the metatarsals of the foot when it is shod in the hull. The front portion 21a of the plate can be curved, as is the case in this example.

The absence of lateral and medial vertical walls in the front portion 21a of the hull facilitates bending of the hull, about a transverse axis, in the metatarsal area. This flexion is paramount. Indeed, when the user uses a sports machine covered by the invention, it must effectively transmit propulsion efforts. For this, at the end of the movement, its supports are mainly made at the front end of the foot. It is important then that the foot can freely flex at the metatarsals. In addition, the foot must have a good transverse holding in order to have stable supports. Also, the use of a plate allows this double requirement, a bending around a transverse axis and a rigidity about a longitudinal axis. To improve the bending around a transverse axis, it is conceivable to vary the thickness of the plate 21 and, in particular in its front portion 21a. Thus, by locally reducing the thickness e21a of the front part, over the entire width of the plate, it favors the bending of the plate at this area, similarly to a hinge. Another way to improve bending in the metatarsal area is to create a corrugation of the plate, the hollow of a wave extending in a transverse direction.

The absence of a vertical front wall in the front part 21a of the shell makes it possible to greatly facilitate the production of the shell and also makes it possible to lighten the part. Some shoe constructions incorporate a shell incorporating a front reinforcement to protect the toes. Such a construction is illustrated in the document EP2989917 . It turns out that such a shell is complex to achieve. Indeed, the tool to produce such a part is complex and expensive, especially because of the presence of large undercuts. The rate of production is thus limited because of the movements of the mold impressions. By eliminating the front walls of the hull, the invention greatly simplifies the tooling for producing the hull. This allows the use of a tooling comprising simple impression movements, without undercuts or with low undercuts.

The shoe also comprises a flexible panel 30. Within the meaning of the invention, a flexible panel can easily be deformed, in all directions, to conform to the morphology of the foot. The flexible panel, also called applies, is intended to cover at least a portion of the top of the user's foot. The flexible panel is generally composed of several parts assembled together. Each piece is made according to a pattern so that by assembling the pieces together, there is obtained a volume structure forming an envelope for covering the top of the foot and the ankle of the user. The flexible panel can be made from one piece. The component (s) of the flexible panel may be a fabric, a fabric or a film. These parts of the flexible panel may comprise several layers or coatings depending on their location. Other elements may be associated with the flexible panel to form the rod. For example, the upper may include a lacing system to hold the foot by tightening the toe.

In this example, the flexible panel 30 comprises a multilayer film composed of an internal or charming net, a breathable membrane and an outer fabric. This film 35 forms a front portion of the rod intended to cover the top and the front of the foot. At the front end, the flexible panel comprises a complementary coating 36. In this example, this coating comprises a succession of layers. The first layer, covering film 35, is the "hard end". It is a piece thermoformed so as to create a curve, a volume structure. The hard end allows to create the camber of the front of the shoe. It ensures the shaping of the front of the stem and prevents its sagging. The second layer, covering the hard end, is a reinforcement allowing a protection of the toes against blows. A third layer can cover the reinforcement. This third layer can be used to improve the seal or maintain the previous layers. This construction is illustrated in the Figures 7 and 8 .

The flexible panel 30 is delimited by an inner surface 31 and an outer surface 32. In its front part, the flexible panel 30 comprises flaps 33 intended to be positioned vis-à-vis the lower peripheral band 2121 of the lower surface 212 of the front portion 21a of the plate 21, during assembly of the flexible panel with the shell. The flaps 33 are separated by cutouts 331, as seen on the figure 3 , so that the flaps can be pressed correctly on the lower surface 212 of the shell 20 without wrinkles. In its rear part, the inner surface 31 of the flexible panel 30 comprises an inner peripheral band 311, in its lower part, as seen on the figure 3 . The inner peripheral band 311 is not necessarily marked, it can be fictitious. This inner peripheral band 311 is dimensioned so as to be positioned vis-à-vis the outer peripheral band 25 of the shell 20, during assembly of the flexible panel with the shell.

In this example, the shoe comprises a spacer 40 intended to be inserted between the lower surface 212 of the front portion 21a of the shell 20 and the upper surface. 11 of the front part of the outsole 10. This spacer 40 is sized to fit in a space defined by the flaps 33 of the flexible panel when the flexible panel is assembled on the shell.

The embodiment of the shoe according to the invention comprises the following steps.

In a first step, the outsole 10, the shell 20, the flexible panel 30 and the spacer 40 are independently produced. As regards the flexible panel 30, the latter is made by assembling several elements. between them, as we have seen previously.

In a second step, the flexible panel 30, or "applied" is assembled on the shell 20. In this step, the lower edges of the flexible panel 30 are fixed on the peripheral edges of the shell. To connect these two elements, several assembly techniques can be envisaged. According to one embodiment, the flexible panel 30 is glued only on the shell 20. The adhesive layer 4 is represented on the Figures 7 and 8 . The bonding or thermo bonding is an interesting solution because it allows to have a good relative sealing between the two parts. It is also possible to use a stitching / seam connection or else welding, for example, by ultrasound.

A feature of the claimed construction is that the flexible panel 30 covers a lower peripheral band 2121 of the lower surface 212 of the front portion 21a of the plate 21 and a portion 25 of the outer surface 222 of the side wall 22 and a portion 25 of the outer surface 232 of the medial wall 23. Thus, in the rear part of the assembly, it comes to place the inner peripheral band 311 of the inner surface 31 of the rear portion of the flexible panel 30 on the outer peripheral band 25 defined by a portion 25 of the outer surface 222 of the side wall 22, a portion 25 of the outer surface 232 of the medial wall 23 and, in this example, a portion 25 of the outer surface of the rear wall 24. This assembly by covering the flexible wall on the shell, in the rear part of the shoe improves the waterproofness of the shoe. Indeed, it avoids creating an outer rim that can create a retention of water or snow. This retention of water can cause water penetration or infiltration inside the shoe. According to one embodiment, the flexible panel 30 covers the outer surfaces 222, 232 of the side walls 22 and medial 23 on a relatively large surface area, greater than a peripheral band of defined width.

On the other hand, in the front part of the assembly, the flanges 33 are folded so that they overlap the lower peripheral band 2121 of the lower surface 212 of the front portion 21a of the plate 21. also, this overlap assembly improves the waterproofness of the shoe. There is no external rim that can cause water infiltration. With this construction, the covering of the flexible panel on the front part of the shell is formed on a relatively flat surface and relatively large. This improves the quality of adhesion between the two elements, especially when the parts are assembled by gluing. During this stage of solidarization, it is necessary to temporarily maintain contact between the two parts. It is therefore necessary to apply pressure on one element in order to press against the other. This construction makes it possible to control the applied pressure and to obtain a qualitative assembly.

In addition, this construction makes it possible to reduce the number of discontinuities between the overlapping zones. These discontinuities may be more delicate areas to seal. In this example, there are two discontinuities, each at an intersection, lateral and medial, between the lower peripheral band 2121 and the outer peripheral band 25.

In a third step, the outsole 10 is assembled on the assembly composed of the shell 20 and the flexible panel 30, possibly by inserting a spacer 40. This assembly can be done by gluing (glue layer 4 shown in FIGS. Figures 7 and 8 ), by means of screws and insert or by any other appropriate technique. The outsole is attached to the lower surface of the shell plate and / or a portion of the flexible panel covering the peripheral strip of the lower surface of the front portion of the plate.

This produces a lightweight shoe 1, comprising a minimum of components. The peculiarity of this construction is the absence of a traditional assembly first, this being substituted by a portion 21 of the shell 20.

In this example, the shoe 1 also comprises a removable boot 50 formed of a casing 51 and delimited, in its lower part, by a bottom wall 52. The boot 50 is intended to fit inside the assembly of the shell 20 and the flexible panel 30, between the shell and the flexible panel.

This construction is particularly advantageous for removable shoes because it is lightweight while ensuring good transverse support and bending at the metatarsal area.

References

1.

Sports shoe

2.

stem

3.

Shoe base

4.

Glue layer

10.

Outsole
11. Upper face
12. Bottom face
13. Hanging element
14. Lateral relief
15. Central groove

20.

Shell
21. Plate
21a. Front part
21b. Rear part
211. Upper surface
212. Bottom surface
2121. Lower peripheral band
213. Front peripheral edge
214. Rear peripheral edge
215. Lateral peripheral edge
216. Medial peripheral edge
22. Side wall
221. Internal surface
222. External surface
23. Medial wall
231. Internal surface
232. External surface
24. Rear wall
25. External peripheral band

30.

Soft panel
31. Internal surface
311. Internal device band
32. External surface
33. Rabat
331. Cutting
34. Movie
35. Complementary coating

40.

brace

50.

Chausson
51. Envelope
52. Bottom wall

60.

Necklace

Claims (15)

Sports shoe (1) intended to be mechanically connected to a sports machine comprising: - A shell (20) monobloc, rigid material, composed ∘ a plate (21) delimited by an upper surface (211) and a lower surface (212), the upper surface being intended to cover the sole of the user's foot, the plate comprising a front part (21a) s extending from the front end of the plate a quarter of its total length (L21) and a rear portion (21b) extending from the rear end of the plate over one-half of its total length , ∘ a side wall (22) and a medial wall (23), each wall extending on the side of the upper surface of the plate, in the rear part of the plate, from, respectively, a lateral edge ( 215) and medial (216) of the plate, each wall (22, 23) being delimited by an inner surface (221, 231) and an outer surface (222, 232), ∘ no wall extending from the side of the upper surface of the plate from an edge of the plate in its front part, - A rod (2) comprising a flexible panel (30) for covering at least a portion of the top of the user's foot, the flexible panel being attached to the hull characterized in that
the flexible panel covers a peripheral band (2121) of the lower surface of the front portion of the plate, a portion (25) of the outer surface of the side wall and a portion (25) of the outer surface of the medial wall. Sports shoe according to claim 1, characterized in that the flexible panel comprises several parts assembled to form an envelope intended to cover the top of the foot and the user's ankle. Sports shoe according to one of the preceding claims, characterized in that the flexible panel consists of a fabric, a fabric or a film. Sports shoe according to one of the preceding claims, characterized in that the flexible panel comprises a complementary coating (35) at the front end of the boot. Sports shoe according to one of the preceding claims, characterized in that the shell also comprises a rear wall (24) extending on the side of the upper surface of the plate from a rear edge of the plate and connecting the side wall to the medial wall. Sports shoe according to the preceding claim, characterized in that the rear wall (24) is lower than the side walls (22) and medial (23). Sports shoe according to one of the preceding claims, characterized in that the flexible panel is glued only on the shell. Sports shoe according to one of the preceding claims, characterized in that it comprises a removable boot (50) intended to be housed between the shell and the flexible panel. Sports shoe according to one of the preceding claims, characterized in that the thickness (e21a) of the front portion of the plate is less than 2.5 millimeters. Sports shoe according to one of the preceding claims, characterized in that the shell is made of rigid material having a modulus of elasticity greater than 2 GPa. Sports shoe according to one of the preceding claims, characterized in that the plate (21) forming the shell is curved only in a longitudinal direction. Sports shoe according to one of the preceding claims, characterized in that it comprises a wear sole (10) fixed on the lower surface of the shell plate and / or a part of the flexible panel covering the peripheral strip of the lower surface of the front part of the plate. Sports shoe according to the preceding claim, characterized in that the outsole comprises: - An element hooked (13) adapted to cooperate with a fastening mechanism carried by a sports machine to secure the shoe with the sports machine while allowing the rotation of the shoe, compared to the machine of sport, around a transverse axis at the front of the shoe, the fastening mechanism for separating the shoe with the sports gear and, - Guiding means (14, 15), positioned under the shell plate, adapted to cooperate with a guide carried by the sports machine to limit only the transverse displacement of the heel of the shoe. Sports shoe according to the preceding claim, characterized in that the hook element (13) is formed by a supported shaft extending transversely to the shoe. Sports shoe according to one of claims 12 to 14, characterized in that it comprises a spacer (40) intended to be inserted between the lower surface (212) of the front part (21a) of the shell (20) and an upper surface (11) of the front portion of the outsole (10).

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