阅读说明：本技术 具有被***在鞋帮和舒适鞋底之间的壳体的运动鞋 (Sports shoe with shell interposed between upper and comfort sole ) 是由 B·盖斯 W·圣庆 于 2018-12-06 设计创作，主要内容包括：一种运动鞋,其在鞋尖(1)和鞋跟(3)之间延伸并且包括经由舒适鞋底(9)连接到外底(7)的鞋帮(5)。根据本发明,运动鞋包括由塑料或复合材料制成的壳体(13),该壳体插入在鞋帮(5)和舒适鞋底(9)之间,并且在鞋跟(1)处与其附接到。(An athletic shoe extends between a toe (1) and a heel (3) and comprises an upper (5) connected to an outsole (7) via a comfort sole (9). According to the invention, the sports shoe comprises a shell (13) made of plastic or composite material, which is inserted between the upper (5) and the comfort sole (9) and is attached thereto at the heel (1).)

1. Sports shoe extending between a toe (1) and a heel (3) and comprising an upper (5) attached to an outsole (7) via a comfort sole (9), and a shell (13), which shell (13) is made of plastic or composite material and is inserted between the upper (5) and the comfort sole (9) and is attached at the heel (3) up to the toe (1) by a shell bottom (23) and shell sides (25), characterized in that the shell sides (25) form an edge around the shell bottom (23) and have a recess (27) provided at a front section (19) of the shell (13).

2. Sports shoe according to claim 1, wherein said bottom shell (23) is perforated.

3. Sports shoe according to claim 1, wherein said comfort sole (9) has a radius of curvature (Rl, R2) at any point (Pl, P2) on the line (L) from the heel (3) to the toe (1) and forms an interface with the outsole (7).

Technical Field

The present invention relates to a sports shoe, in particular consisting of an upper attached to an outsole via a comfortable sole.

Background

Shoes of this type are known from document EP 3114955. From the heel to the toe of the shoe, a rubber outsole is attached to a first comfort sole made of expanded polyurethane. The second Ethylene Vinyl Acetate (EVA) comfort sole is perforated such that the upper is attached to the first and second comfort soles. The expanded polyurethane increases the cushioning effect of the first comfort sole.

Document FR2898252 also describes sports shoes of the type indicated in the introduction, but characterised in that a two-piece composite insert is attached to the outsole and the comfort sole at the heel and to the comfort sole and the upper at the toe. This portion of the composite insert increases the flexibility of the toe cap.

According to this prior art, it was found that at the heel, the upper is in direct contact with the comfort sole. The object of the present invention is to improve the prior art in order to better control the support phase of the sports shoe.

Disclosure of Invention

To this end, the subject of the invention is a sports shoe, of the type indicated in the introduction, characterized in that it comprises a shell made of plastic or composite material, which is inserted between the upper and the comfort sole and is attached thereto at the heel.

The shell, made of plastic or composite material, gives the upper torsional and bending rigidity to counteract the displacement of the foot during the impact between the heel of the shoe and the ground and thus contributes to the stability of the support. By elastic deformation, it also allows to recover a portion of the energy released by the impact during relaxation by reducing a portion of the energy dissipated by the comfort sole.

Preferably, a shell of plastic or composite material is inserted and attached to the upper and the comfort sole up to the toe cap. With this arrangement, the shell is elastically deformed from the heel to the toe of the shoe during the entire stride and provides a stimulating effect to the foot enclosed by the upper by transferring back the stored energy.

It is also preferred that the plastic shell or composite material is inserted and attached to the upper and the comfort sole via the shell bottom and the shell sides.

In one aspect, the shell sides form a rim around the shell bottom to allow the shell to stabilize the foot relative to the ground during a stride. Thus, the foot enclosed by the upper remains aligned with the shoe upon heel-to-ground impact. On the other hand, the edges of the sides of the housing increase the bending and torsional rigidity of the housing. This arrangement is more particularly suitable for road running.

In one embodiment, the shell sides surround a portion of the shell bottom corresponding to the heel and are broken along a portion of the shell bottom corresponding to the toe box.

The breaking of the sides of the shell gives the toe of the shoe flexibility while maintaining the rigidity of the heel. This arrangement is more particularly suitable for track running.

In another embodiment, the housing sides form a rim around the bottom of the housing.

In one aspect, the shell sides form a rim around the shell bottom to allow the shell to stabilize the foot relative to the ground during a stride. Thus, the foot enclosed by the upper remains aligned with the shoe upon heel-to-ground impact. On the other hand, the edges of the sides of the housing increase the bending and torsional rigidity of the housing. This arrangement is more particularly suitable for road running.

Preferably, the housing sides are provided with recesses.

This arrangement makes it possible to vary the rigidity of the housing by defining rigid sections of the sides of the housing, between which sections flexibility is created due to the recesses. It is particularly suitable for mountain running, known as "cross-country running".

Furthermore, preferably, the bottom of the housing is perforated.

The perforated bottom of the housing makes it possible to reduce the weight of the housing while maintaining the rigidity provided by the sides of the housing.

Advantageously, the comfort sole has a radius of curvature at all points of the line from the heel to the toe and forms an interface with the outsole.

The bending of the comfort sole eliminates the overlapping effect of the initial impact felt by a comfort sole without bending. The transition between the strike and the rolling of the foot is instantaneous. In combination with the stiffness of the composite shell, the bending of the comfort sole facilitates the return of energy, allowing a faster and therefore more powerful stride.

Further advantages of the invention will appear from the description of the embodiments shown by the figures.

Drawings

Fig. 1 is a side view of a first embodiment of the present invention.

Fig. 2 is an enlarged view of fig. 1.

Fig. 3 is a view along the section a-a' of fig. 1.

Fig. 4 is a side view of a second embodiment of the invention.

Figure 5 is an enlarged view of figure 4,

fig. 6 is a view along the section B-B' of fig. 4.

Fig. 7 is a side view of a first variation of the second embodiment of the present invention.

Fig. 8 is a view of a housing of the first modification shown in fig. 7.

Fig. 9 is a side view of a second variation of the second embodiment of the present invention.

Fig. 10 is a view of a housing of the second modification shown in fig. 9.

Detailed Description

According to a first embodiment of the invention, as shown in fig. 1 to 3, the sports shoe extends between a toe cap 1 and a heel 3 and comprises an upper 5 attached to an outsole 7 via a comfort sole 9.

The outsole 7 is made of an adhesive material, such as rubber, and is intended to provide good grip and good wear resistance. The comfort sole 9 acts as a shock absorber and absorbs shocks during contact of the shoe with the ground, in particular through the heel 3. It also has controlled torsional and bending stiffness characteristics. The upper 5 is intended to keep the foot enclosed in the shoe and, for this purpose, it is provided with a closing system 11 using laces or quick-fastening straps. The outsole 7 and the comfort sole 9 are connected to each other from the toe 1 to the heel 3, for example by gluing. The outsole 7 may be equipped with a tip 71 at the toe 1.

According to the invention, the sports shoe comprises a shell 13 made of plastic or composite material, which is inserted between the upper 5 and the comfort sole 9 and which is attached to the heel 3. The rear part 51 of the upper 5 is for example glued to the rear part 17 of the shell 13, corresponding to the heel 3 of the shoe, and likewise said rear part 17 is glued to the rear part 91 of the comfort sole 9. Gluing may be replaced by gluing.

In the embodiment shown in fig. 1 to 3, the housing 13 extends from a rear portion 17 corresponding to the heel 3 to a front portion 19 corresponding to the toe 1, however, the housing 13 may only extend a distance less than the distance between the heel 3 and the toe 1. Reference numeral 21 has a broken line which shows an end of the front portion 19 of the housing 13 which is at a smaller distance from the rear portion 17 than the distance between the heel 3 and the toe 1 of the shoe. In this case, the upper 5 is in direct contact with the comfort sole 9 in the part of the toe 1 of the shoe that is not inserted into the shell 13.

The shell 13 is inserted between the upper 5 and the comfort sole 9 and is attached to these two elements by the heel 3, so as to impart on the one hand torsional and bending stiffness to the upper.

During the impact between the heel 3 of the shoe and the ground, the shell 13 counteracts the displacement of the foot enclosed in the upper 5, thus contributing to the stability of the support. On the other hand, the shell is made of plastic or composite material to allow a portion of the energy released by the impact to be recovered during relaxation by reducing a portion of the energy dissipated by the comfort sole.

The shell 13 is attached to the upper 5 and the comfort sole 9 via the shell bottom 23 and the shell sides 25.

In this first embodiment, the shell sides surround the bottom shell 23 along the rear portion 17 of the shell 13 corresponding to the heel 1 and are interrupted along the shell bottom 23 in the front portion 19 of the shell 13 corresponding to the toe 1.

As described above, the breaking of the shell sides 25 provides flexibility to the toe cap 1 while maintaining rigidity of the heel 3. This arrangement is more particularly suitable for runway running.

The second embodiment shown in fig. 4 to 6 differs from the previous embodiments in that here the housing side 25 forms an edge around the housing bottom 23.

As mentioned above, the shell sides 25 form an edge around the shell bottom 23 on the one hand to allow the shell 13 to stabilize the foot relative to the ground during a stride. Thus, the foot enclosed by the upper 5 remains aligned with the shoe when the heel 3 strikes the ground. On the other hand, the periphery of the housing sides 25 increases the bending and torsional rigidity of the housing 13. This arrangement is more particularly suitable for road running.

As mentioned above, this arrangement makes it possible to vary the stiffness of the housing 13 by defining rigid sections of the housing sides 25, thereby creating flexibility between these sections due to the notches. The recess 27 is arranged in the front part 19 of the housing 13 along the periphery of the housing bottom 13. They correspond, for example, to the position of the joints between the metatarsals (metasal bone) and the phalanges of the foot and between the phalanges (pharange) and the toe (toe). This embodiment variant is particularly suitable for mountain running, known as "off-road running".

According to a second variant of the second embodiment, fig. 9 and 10, the bottom shell 23 is perforated. The cavity 29 reduces the weight of the housing 13 while maintaining the rigidity provided by the housing sides 25.

In the first or second embodiment, the comfort sole 9 has a radius of curvature R at any point P on a line L from the heel 3 to the toe 1. In fig. 1 and 4, points Pl and P2 of line L have radii of curvature Rl and R2.

As mentioned above, the curvature of the comfort sole 9 eliminates the overlapping effect of the initial impact felt by a comfort sole without curvature. The transition between the strike and the rolling of the foot is instantaneous. In combination with the stiffness of the composite shell 13, the bending of the comfort sole 9 promotes a return of energy, allowing a faster and therefore more powerful stride.

The housing is preferably made of a polymer resin impregnated with glass fibers or carbon fibers. It may also be manufactured by injection of thermoplastic or thermosetting materials. For a given material, the torsional and bending stiffness will be adjusted according to its thickness and its geometry, in particular the height of the sides of the housing. The comfort layer is preferably made of EVA, but it may also be made of a viscoelastic material or a polyurethane foam.

The shoe construction according to the invention is based on the concept that each element of the sole performs a different function, according to which the modulation of each element of the sole can be used in response to different sports exercises, whether on the road, on a runway or on a mountain. It helps to hold the foot in place and guide it, and combines cushioning and stride recovery.