EP1844673A1 - Shock-absorber system for a shoe - Google Patents

Abstract

The shoe has an external bottom with dampening support elements (40) constituting a medial support block (41) and two lateral support blocks (42, 43) that are independently deformable from one another. Each block extends in a vertical direction from a higher end to a lower end of the bottom. The bottom has an elastically deformable element (30) with an upper part extending in a transversal direction of the bottom and recovering an upper end of each block, and with buckle straps (34, 35) extending, respectively, laterally and medially to externally cover each block on all heights of the blocks.

Description

The present invention relates to a damping system for a shoe and in particular for a sports shoe such as a walking shoe, running shoe, or other.

There is a huge amount of cushioning for sports shoes, these systems being designed to cushion the reaction forces from the ground during the cycle of walking, running, or traveling.

Traditionally these damping devices are designed to damp the reaction forces occurring mainly perpendicular to the ground surface, that is to say mainly in the vertical direction. Indeed the reaction efforts occurring in this direction are traditionally considered the most important. These vertical reaction forces are therefore generally damped by the mere provision of a block of foam, usually EVA, deformable in the vertical direction. Other means using pockets filled with fluid or gas are also provided.

More recently, we have been interested in the response of the soil occurring not in a vertical direction, but in the plane of the ground, which we will call here horizontal plane.

Depending on the type of sport practiced, these horizontal efforts are more or less important. For example, in sports such as tennis or basketball, where there are many lateral movements, the reaction forces at the ground plane can be very high.

It has also been found that the horizontal reaction forces occurring during running on asphalt are higher because the high coefficient of friction of this material (asphalt) stops any relative horizontal movement of the sole. compared to the ground, which is not the case during the race on soft ground, where relative ground / sole movements can occur.

This finding has resulted in new shoe constructions in which the soles cushioning devices are designed to allow some relative movement of the soleplate relative to the ground, and / or shearing movements within the soleplate. itself, so as to absorb the efforts occurring in an essentially horizontal plane and to reproduce the effects of the race on soft ground.

Such constructions are known for example by the US6,487,796 ; US5,343,639 ; EP 1 402 795 ; US5,224,810 .

These documents usually teach that you only have depreciation in the horizontal plane.

The WO 98/07343 teaches a construction in which fluid-filled bag-shaped elements can deform in the three directions, that is to say both in a horizontal plane and in a vertical direction.

The problem of such a construction is that the deformations in any of the directions are homogeneous. It is therefore not possible to differentiate / dissociate the damping in the vertical direction and in the horizontal direction.

Another general problem that all the damping devices face is to reconcile damping and stability / grip of the foot in the field, these functions being more or less incompatible.

The object of the present invention is to overcome the drawbacks of the prior art and to provide an improved damping device.

One purpose is in particular to provide a damping device in three different directions, that is to say both in a horizontal plane and in a vertical direction.

Another object of the present invention is to provide a damping device compatible with good grip and / or "handling".

This or these goals are achieved in the shoe according to the invention which is of the type comprising a rod, surmounting an outer sole, in that the outer sole comprises at the heel at least two support elements of damping material, disposed respectively side lateral and medial assembly, that each element extends in a vertical direction substantially from an upper end to a lower outer end of the sole, that these support elements are deformable substantially independently of one another, and that the sole external member comprises an elastically deformable element comprising an upper part extending in the transverse direction of the sole assembly and covering the upper end of each of the support elements, and at least two lugs extending laterally and medially respectively and surrounding each of the support elements externally. substantially over the entire height of x thereof.

This construction allows damping in all directions while ensuring good stability and grip of the shoe.

Indeed, in the case of a force directed essentially vertically, the support elements will compress and absorb the energy thus produced. Because of their independence, and in particular because the support elements are not connected at their lower end by a common step sole, as in the known devices, the support elements will also deviate from each other relative to the longitudinal axis of the shoe and thus increase the support polygon. This necessarily results in increased stability of the shoe.

• la figure 1 est une vue en perspective de dessous d'une chaussure comportant un semelage amortissant selon l'invention,
• la figure 2 est une vue en perspective éclatée du semelage selon l'invention, sans la couche de contact,
• la figure 3 est une vue de profil de la partie arrière du semelage de la figure 1,
• les figures 4 et 5 sont des vues schématiques en coupe transversale illustrant le fonctionnement du semelage en cas d'effort vertical,
• la figure 6 est une vue similaire aux figures 4 et 5 illustrant la déformation du semelage en cas d'irrégularité du terrain,
• la figure 6a est une vue de côté de la figure 6,
• la figure 7 est une vue similaire à la figure 2 selon un second mode de réalisation,
• les figures 8 et 9 sont des vues similaires aux figures 3 et 4 concernant le second mode de réalisation,
• la figure 10 est une vue similaire à la figure 2 d'un semelage selon un troisième mode de réalisation,
• la figure 11 est une vue en coupe selon XI-XI de la figure 10,
• la figure 12 est une vue similaire à la figure 4 concernant un quatrième mode de réalisation,
• la figure 13 est une vue similaire à la figure 4 concernant un cinquième mode de réalisation,
• la figure 14 est une vue similaire à la figure 4 concernant un sixième mode de réalisation,
• la figure 15 est une vue similaire à la figure 4 concernant un septième mode de réalisation,
• les figures 16 et 17 sont des vues de dessous d'un semelage selon respectivement un huitième et un neuvième mode de réalisation.

In any case the invention will be better understood and other characteristics thereof will be highlighted with the aid of the description which follows with reference to the appended diagrammatic drawings which represents by way of nonlimiting example several modes of realization and in which:

• FIG. 1 is a perspective view from below of a shoe comprising a damping sole according to the invention,
• FIG. 2 is an exploded perspective view of the assembly according to the invention, without the contact layer,
• FIG. 3 is a side view of the rear part of the sole assembly of FIG. 1,
• Figures 4 and 5 are schematic cross-sectional views illustrating the operation of the sole assembly in case of vertical force,
• FIG. 6 is a view similar to FIGS. 4 and 5 illustrating the deformation of the sole assembly in the event of unevenness of the ground,
• FIG. 6a is a side view of FIG. 6,
• FIG. 7 is a view similar to FIG. 2 according to a second embodiment,
• FIGS. 8 and 9 are views similar to FIGS. 3 and 4 relating to the second embodiment,
• FIG. 10 is a view similar to FIG. 2 of a sole assembly according to a third embodiment,
• FIG. 11 is a sectional view along XI-XI of FIG. 10,
• FIG. 12 is a view similar to FIG. 4 relating to a fourth embodiment,
• FIG. 13 is a view similar to FIG. 4 relating to a fifth embodiment,
• FIG. 14 is a view similar to FIG. 4 relating to a sixth embodiment,
• FIG. 15 is a view similar to FIG. 4 relating to a seventh embodiment,
• Figures 16 and 17 are bottom views of a sole according to respectively an eighth and a ninth embodiment.

Figures 1 to 6 illustrate the construction and operation of a damping sole according to a first embodiment of the invention in a sports shoe 1. The sports shoe 1 shown is a running shoe, but could be a different kind of sports shoe. This shoe 1 is shown in perspective, seen from below in Figure 1. It comprises a rod 2, which overcomes an outer sole 10. The rod 2 will not be described in detail later, the other figures simply representing the sole external.

By outer soleing 10 is meant the sole portion disposed outside the rod 2, this outer sole 10 does not include the soleing parts such as insole, sockliner, or sole or Strobel sole assembly, which are linked to the rod 2 and / or disposed inside thereof. The rod 2 is fixed to the outer sole 10 in any way known per se and in particular by gluing.

As shown more particularly in FIGS. 2 and 3, the outer soleing 10 comprises, from top to bottom, an upper damping layer 20, an elastically deformable element 30, several damping support elements 40 and a contact layer 50 (not shown in FIG. Figure 2 for the sake of clarity).

The upper damping layer 20 extends substantially the entire length of the sole 10, that is to say from the rear end to the front end thereof, and has two parts, respectively before 21 and back 22, of substantially uniform thickness. The front portion 21 has a greater thickness than the rear portion 22, for example of the order of 4 to 15 mm. The rear portion 22 has a thickness for example of the order of 3 to 10 mm. In the example shown, the front portion 21 ends in the direction of the rear by a chevron shaped portion 23, forming a step relative to the rear portion 22 and whose role will be explained later. Of course, instead of the chevron 23, any other form may be provided, for example vague, ... etc. The upper portion 24 of the upper damping layer 20 is substantially flat or adapted to the shape of the rod. It may also have substantially vertical edges 25 intended to go up along the rod 2, these edges 25 are higher in the rear zone, and in particular bead, and the elastically deformable element 30 has at the heel part shaped cup 31, ie a portion having a relatively flat bottom 31 conforming to the shape of the damping upper layer 20 and having edges 31b rising up along the rod or edges 25 of the upper damping layer 20 The cup-shaped portion 31 furthermore has tabs 33, in this case in the example shown two lateral tabs 34, two medial tabs 35 and a rear tab 36 intended to cooperate with the support elements as well as the will see further. Of course the number of legs can be different depending on the desired result.

Each tab 34, 35, 36 extends from the rear bowl 30, downwards and ends with a return respectively 34a, 35a, 36a intended to be interposed between the damping support members 40 and the contact layer 50. returns 34a, 35a, 36a are essentially intended to ensure good bonding between the tabs 34, 35, 36 and the contact layer 50, as well as the support elements 40. These returns can optionally be removed.

In the example shown, the tabs 34, 35, 36 have a relatively flat shape and have a slightly inclined cross-sectional shape in relation to the vertical direction V (see FIG. 4), flaring towards the end of the sole, from top to bottom.

Moreover, as shown in Figures 2 and 3, in the example shown these lugs 34, 35, 36 have a slightly triangular shape tapering downwardly. Other shapes may also be provided depending on the role of the elastic element. Thus these tabs may have a wavy shape, instead of flat, so as to favor damping in the vertical direction. It can also be envisaged that the tabs extend only over part of the height of the blocks.

The elastically deformable element is extended forward by two flat tabs 37 whose operation will be explained later. This element 30 is made of a relatively rigid and elastic material and having in particular a Young's modulus greater than 40 MPa. It can be made of synthetic or composite material, such as TPU, PE, filled or unheated polyamide, polyester elastomer (hytrel), PEBA, composite based on carbon fiber / resin, etc.

The damping upper layer 20 is made of EVA or PU foam with a hardness greater than 20 Asker C.

The damping support elements 40 consist of blocks of damping materials disposed between the elastically deformable element 30 and the contact layer 50.

In the first embodiment, these support elements are independent and are three in number, namely a medial block 41, that is to say placed on one medial side of the shoe, two lateral blocks 42, 43, that is to say placed lateral side of the shoe. The medial block 41 has a slightly arched shape so as to follow the contour of the sole and extends substantially over the entire length of the heel area of the sole. This medial block 41 cooperates with the two medial tabs 35 of the elastically deformable element 30. The most forward side block 42 has a substantially parallelepipedal shape and cooperates with a single lateral tab 34 of the elastically deformable element 30 The rearmost side block 43 extends both from the lateral side and over a portion of the rear of the heel and cooperates with two respectively lateral 34 and rear 36 tabs of the deformable elastic element. Of course, the number of legs can be different for each block.

This lateral block 43 also has an arcuate shape so as to match the contour of the heel.

In the embodiment, the lateral block 43 has substantially the same length as the medial block 41, but it could also be of different length and for example the medial block 41 could be longer. The two lateral blocks 42, 43 are separated by a slot-shaped space 46 substantially perpendicular to the edge of the sole assembly, while the medial 41, lateral 43 blocks are separated by a slot-shaped space 47 also substantially perpendicular to the edge or contour in the area under consideration.

These support blocks 41, 42, 43 are assembled to the elastically deformable element independently of each other by their upper end respectively 41a, 42a, 43a. In the example shown, the medial block 41 extends towards the front of the shoe, that is to say beyond the arch of the foot, by a damping layer 44 of slightly lower thickness and terminating in a shape. triangle or chevron 44d complementary to that of the front portion 21 of the upper damping layer 20 so as to provide a form connection between these two layers. Of course other forms can be provided. The thickness of the layer 44 corresponds to that of the step 23 of the chevron. In practice blocks 41, 42, 43 are made of elastomerized EVA foam, or PU foam of Asker C hardness. Such foams have in fact a damping and elastic behavior. According to the case of the more damping foams, such as non-elastomerized EVA foam may be provided. In the example shown, the blocks have a thickness in the vertical direction of 10 to 30 mm and for example of the order of 20 mm.

The elements 30 and 40 are pre-assembled in a subassembly 60 before assembly to the damping layer 20 to form the sole 10. The arms 37 are housed in the recesses 27 of the layer 20 to consolidate the assembly.

As also well shown in Figure 2, each block 41, 42, 43 is provided with one or two recesses or disbursements respectively 41c, 42c 43c to receive the associated lug 34, 35, 36 of the elastically deformable element 30. Well understood these recesses have forms complementary to those of the associated legs.

According to the embodiment, these recesses could also be removed.

The contact layer 50 consists of elements, respectively rear medial 51, lateral rear 52, 53 and front 54, intended to be fixed on the lower ends respectively 41b, 42b, 43b and 44b of the support blocks respectively 41, 42, 43 and damping layers respectively 44 and 21.

This contact layer 50 is made of a material that is resistant to wear and has adhesion characteristics, such as rubber, TPU, EVA foam with high abrasion resistance, the latter two materials having the advantage of being more light as rubber. Depending on the case and depending on the material used for the support blocks and / or damping layer, this contact layer 50 can be reduced or eliminated.

The combination of an elastically deformable but structurally rigid element and damping support blocks ensures good damping in all directions, i.e., three-dimensional damping, due to the independence of said blocks. damping 40, while ensuring the stability of the assembly through the elastic member 30. Moreover because of the different shapes of the blocks 41, 42, 43 and different numbers / shapes of legs per associated block, the characteristics of damping of the blocks can be dissociated, on the one hand, between blocks and, on the other hand, between vertical and horizontal directions. The operation of the assembly is particularly illustrated in FIGS. 4 to 6.

Figure 4 illustrates the sole assembly 10 according to the invention laid flat on a floor "S", in the absence of any effort. In this configuration the support blocks 40, and in particular 41, 43 define a levitation polygon "P" having a width "1".

When a force "F" is applied on the sole in a substantially vertical direction, the support blocks 40 will deform, move away from each other, by constraining the elastic element 30, and define a new polygon of greater levitation, since of width "L" superior to that "1" of the previous polygon. In other words the perimeter of the support zone is larger and the stability at the level of the soleing is increased.

As soon as the effort "F" is released, the elastically deformable element 30 will exert a return force and tend to bring back the support blocks 40 in the initial position shown in FIG. 4. In practice, during the race c ' is the heel support block 43 which will be first requested, since the first to be in contact with the ground, then following the morphology of the user (pronator, supinator), it will be the lateral block 42 or medial 41, which will enter in contact with the ground, then the opposite block thus causing the blocks 41, 42 to move apart.

Because of their independence, the support blocks 40 can thus deform independently of each other to adapt to the movement of the foot or to the terrain configuration. Thus, in the case of FIGS. 6 and 6a, only the support block 43 and the associated tab 34 deform under the effect of a pebble "P". It will be noted that this isolated deformation of the support block 43 is in this case made possible by the legs that are also deformable independently of one another, of the elastically deformable element 30. The construction according to the invention is therefore particularly advantageous for use in the field. furniture with irregularities.

Figures 7 to 9 illustrate a second embodiment in which similar or identical elements are designated by the same references increased by 100.

In this embodiment, the main difference lies in the fact that the damping support blocks 141, 142, 143 are connected together by a web of material 147. This web of material being very thin of the order of 3 to 10 mm by relative to the support blocks 141, 142, 143, these are always free to move independently of each other. On the other hand, the fact that they are thus united facilitates their assembly.

Furthermore, when a force "F" is exerted on the outer sole 110 and that it crushes under the effect thereof as shown in Figure 9, the web material 147 will be biased in tension, and in return, will also tend to return the sole to its original form as soon as the effort is released.

In order to allow this elastic return effect of the web 147, it is not glued to the elastically deformable element 130 and is instead separated from the latter by a cavity 148.

Another difference between these embodiments is that the damping block 141, 142, 143, 144 forms a single piece.

Finally, the medial support block 141 is made of a material similar to the rest of the assembly 140, for example EVA foam, but of greater hardness between 50 and 65 Asker C for example. It also extends on the part 144 by a portion 144a of the same hardness. It can also be in a different material, the purpose of this block 141 is to be a little harder (therefore less damping compared to other blocks). This function is also related to the pronator / supinator type of the shoe.

In the exemplary embodiment shown in FIGS. 10 and 11, similar or equivalent elements are designated by the same references further increased by 100.

In this case, the damping support elements 241, 242, 243 of the outer sole are also assembled in a single block 240. Compared to the previous cases where the element 40, 140 stopped shortly after the arch, the element 240 extends here into the area of metatarsophalangeal articulation and is therefore longer.

The thickened portion 221 of the damping layer 220 is reduced accordingly and extends only from the front of the sole to the metatarsophalangeal joint area (defined in this case by the step 223). Moreover, the elastically deformable element 230 has two elongated horizontal arms 237 forwards, forming a kind of fork.

These elongate arms 237 thus extend into the region of metatarsophalangeal articulation represented by the boundaries 223, 244d and make it possible to provide additional elastic recovery to the sole assembly in the front zone thereof. Moreover, these arms 237 each comprise a tab 238 similar to the tabs 234, 235, 236 and extending substantially vertically along the front portion 244 of the support block 240.

These vertical tabs 238, like the tabs 234, 235, 236, serve to stabilize the sole assembly.

In the case shown, the arms 237 and lugs 238 of the elastically deformable element 230 are housed in associated recesses 244e, 244f of the support block, these recesses having complementary shapes and being formed respectively on the upper face and the sides of the front portion 244 of said support block 240.

FIGS. 12 to 17 illustrate other embodiments of the invention in which the elements will be designated by the same references each increased by 100.

In these various embodiments the sole assembly always comprises at least two support elements but additional return / stabilization means are also provided.

In the embodiment of FIG. 12, the sole assembly 310 thus comprises at least two independent damping support elements 341, 343 covered externally substantially over their entire height by an elastically deformable element 330 and provided with a tread or contact layer. 350.

As in the embodiment of FIG. 8, the support elements 341, 343, while remaining independent, are connected by a web of material 347 in the same material as the support elements 341, 343, making it easier to assemble the and which also allows some elastic return of the support elements 341, 343, 342 (not visible in the drawing) towards each other after crushing.

In order to reinforce the elastic return effect, the contact layer 350 is also provided so as to connect the various support blocks 341, 342, 343, and thus comprises a web of material 355 connecting these different elements at their lower end. The contact layer 350 being made of a highly elastic material such as rubber or any elastomerized material, allows a return effect of the sole assembly to the very interesting original position.

Such a construction allows an additional stabilizing effect. In practice, this rubber web 355 makes it possible to avoid up to 5 mm of residual spacing of the pads after returning to the original position.

In other words, it avoids almost any residual deformation that would lead to the spacing of the pads. In practice, a residual deformation of 5 to 8 mm over the width of the sole is avoided.

This rubber web 355 (or other material) can be provided alone ie independently of web 347.

Figure 13 illustrates a similar embodiment in which only the rubber web 455 is provided.

In this case the space 460 between two support members 441, 443, 442 (not shown in the drawing) is filled with a material 461 such as EVA, PU, gel, intended to avoid the presence of a hole 455. This space 460 can be filled by localized extensions of smaller section of the material of the support members 441, 442, 443 as defined for example by the branches 355a, 355b, 355c of FIG. FIG. 13 is then considered as a sectional view according to XIII-XIII of FIG. 16), or the branches 355d, 355e of FIG. 17.

In the embodiment of Figure 14, the space 560 between two support members 541, 543, 542 (not shown in the drawing) is filled with a material 561 such as EVA, PU, gel.

However a cavity 548 is formed between the deformable elastic element 530 and said support elements 541, 543, 542, so as to preserve the independence of said support elements and a web of material 547 in the same material as the support elements 542, 543 , 541 subsists between them.

In the embodiment of FIG. 15, an elastic return member 647 extending substantially horizontally is interposed between the support members 641, 643, 642 (not shown in the drawing) in the same way as in the case of FIG. The only difference lies in the fact that this return element 647 is in this case in another material and is for example made of elastomeric rubber. This element is also disposed substantially in the middle part, in the vertical direction of the support blocks.

FIGS. 16 and 17 show various embodiments of the underside of the sole assembly in the case of FIG. 12 (but also FIGS. 13 to 14), that is to say in the case where the contact layer 350 comprises a veil of material 355 between two support blocks 341, 342, 343 to allow an elastic return of these blocks towards each other.

In the case of Figure 16 the material web 355 comprises 3 substantially similar branches respectively 355a, 355b, 355c, each extending from a support block respectively 342, 343, 341 and joining together forming a star.

In the case of Figure 17, the material web 355 has only two branches respectively 355d, 355e each connecting two support blocks together and respectively respectively blocks 342, 341 and blocks 343, 341.

The configuration of FIGS. 16 and 17 can also be applied to the embodiment of FIG. 15, in which case it is the return element 647 which has a shape in three branches 355a, 355b, 355c or in two branches between the support blocks.

Of course, in the various embodiments, the number of branches 355a, 355b, 355c or 355d, 355e, can be modified and be for example four or more, or less.

Of course, the present invention is not limited to the embodiments described above by way of non-limiting examples but encompasses all similar or equivalent embodiments.

Claims (20)

Shoe comprising a upper surmounting an outer sole comprising an upper end and a lower end,
characterized in that the outer sole (10, 110, 210, 310, 410, 510, 610) has at least two support elements at the heel (41, 42, 43, 141, 142, 143, 241, 242, 243). 341, 342, 343, 441, 442, 443, 541, 542, 543, 641, 642, 643) of damping material disposed respectively on the lateral and medial side of the sole assembly,
in that each element (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543; 641, 642, 643); extends in a vertical direction from substantially the upper end to substantially the lower end of the sole assembly,
in that the support members (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543; 641, 642, 643) are deformable substantially independently of one another,
and in that the outer sole (10, 110, 210, 310, 410, 510, 610) comprises an elastically deformable member (30, 130, 230, 300, 430, 530, 630) having an upper portion extending transverse direction of the sole assembly and covering the upper end of each of the support members (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542; 543, 641, 642, 643), and at least two tabs (34, 35, 36, 134, 135, 136, 234, 235, 236) extending laterally and medially respectively from each of the support members (41 , 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543; 641, 642, 643) substantially all the height of these . Shoe according to claim 1, characterized in that the elastically deformable element (30, 130, 230, 300, 430, 530, 630) is integrally joined to each of the support elements (41, 42, 43, 141, 142, 143 241, 242, 243, 341, 342, 343, 441, 442, 443, 541, 542, 543, 641, 642, 643). Shoe according to any one of claims 1 or 2, characterized in that each lug (34, 35, 36; 134, 135; 136; 234, 235, 236; 334, 335, 336; 434, 435, 436; 534; , 535, 536; 634, 635, 636) of the resiliently deformable member (30, 130, 230, 300, 430, 530, 630) is attached at its lower end below the lower end of the associated support member. Shoe according to any one of claims 1 to 3, characterized in that each support member (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543, 641, 642, 643) is provided at its lower end with a contact layer. Footwear according to any one of claims 1 to 4, characterized in that the sole comprises a medial side support member (41, 141, 241, 341, 441, 541, 641) and two lateral side support members (42, 43; 142, 143, 242, 243, 341, 342, 343, 441, 442, 443, 541, 542, 543, 641, 642, 643). Shoe according to claim 5, characterized in that one of the lateral support members (42, 43; 142, 143; 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543; 641; , 642, 643) also extends to the back of the heel. Shoe according to any of claims 1 to 6, characterized in that each support member (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543, 641, 642, 643) is assembled on the elastically deformable element independently by its upper end. Shoe according to any one of claims 1 to 6, characterized in that the support elements (41, 42, 43; 141, 142, 143; 241, 242, 243; 341, 342, 343; 441, 442, 443; 541, 542, 543, 641, 642, 643) are joined at their upper end to the elastically deformable element via a web of material (147). Shoe according to any one of claims 1 to 8, characterized in that the support elements are assembled by a web of elastic material (147, 347, 355, 455, 555, 647). Shoe according to claim 9, characterized in that the web of elastic material (355, 455, 555, 647) is made of a material such as rubber. Shoe according to claim 10, characterized in that the web of elastic material (355, 455, 555) comes from the outsole. Shoe according to any one of claims 9 to 11, characterized in that the elastic material web (355, 455, 555) is arranged at the lower end of the support elements. Shoe according to any one of claims 9 or 10, characterized in that the elastic material web (647) is disposed substantially at mid-height of the support elements. Footwear according to one of claims 1 to 13, characterized in that the medial support element (41, 141, 241, 341, 441, 541, 641) has a greater hardness than the lateral support elements (42, 43; , 143, 242, 243, 341, 342, 343, 441, 442, 443, 541, 542, 543, 641, 642, 643). Shoe according to claim 14, characterized in that the elastically deformable element (30, 130, 230, 300, 430, 530, 630) has at its upper end a bowl portion disposed at the heel. Shoe according to claim 15, characterized in that the bowl portion extends to the level of the plantar arch of the shoe. Shoe according to any one of claims 1 to 16, characterized in that the elastically deformable element (230) is extended towards the front of the shoe by two horizontal arms extending respectively laterally and medially. Shoe according to any one of claims 1 to 17, characterized in that the sole comprises a layer of damping material (20, 120, 220) disposed between the elastically deformable element and the rod. Shoe according to any one of claims 1 to 18, characterized in that the support elements are made of foam of damping material such as EVA, PU. Shoe according to any one of claims 1 to 19, characterized in that the elastically deformable element is made of a material having a Young's modulus of at least 40 MPa.

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