Classifications

• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1455—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties
  • A43B7/1464—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties with adjustable pads to allow custom fit
  • A43B7/1469—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties with adjustable pads to allow custom fit adjustable by selectively fastening or securing into multiple available positions
• • A—HUMAN NECESSITIES
  • A43—FOOTWEAR
  • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
  • A43B7/00—Footwear with health or hygienic arrangements
  • A43B7/14—Footwear with health or hygienic arrangements with foot-supporting parts
  • A43B7/1405—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form
  • A43B7/1455—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties
  • A43B7/1464—Footwear with health or hygienic arrangements with foot-supporting parts with pads or holes on one or more locations, or having an anatomical or curved form with special properties with adjustable pads to allow custom fit

Definitions

• the present invention relates to a sole for a shoe, in particular a sports shoe as well as a shoe equipped with such a sole.
• a sole for a shoe in particular a sports shoe as well as a shoe equipped with such a sole.
• the individual's foot undergoes anatomical changes which are due to the joints existing between the twenty-six bones making up the human foot and grouped into four functional groups, namely the posterior tarsus, the anterior tarsus, metatarsals and phalanges.
• the movements of the different parts of the foot were studied during each phase of a running or walking cycle.
• the foot is in slight dorsal flexion, inverted, with external tibial rotation.
• the foot pronates at the same time as a knee flexion and an internal leg rotation are performed.
• the caicalean eversion unblocks the arch of the foot and the foot can adapt to the terrain and absorb the shock wave.
• the foot is then flat on the ground, supporting the total load of the individual, in eversion and abduction while the opposite member performs a pendulum movement from back to front.
• the propulsion phase which begins from the moment the heel takes off from the ground and lasts until the end of the support.
• the relief of the heel and the increasing tension of the sural triceps and plantar fascia trigger an inversion of the foot, plantar flexion and adduction.
• shoes equipped with such soles cannot provide the user with all the desirable comfort since the relative deformation of the front part with respect to the rear part of the shoe is always caused by the application of the foot. which abuts on the upper of the shoe.
• the comfort of the user is significantly improved compared to the shoe whose sole is not at all deformable.
• there remains the drawback of friction between the foot and the upper in particular when it comes to sports shoes, in particular long-distance runners or walkers.
• the object of the present invention is to provide a shoe sole which overcomes the aforementioned drawback.
• the shoe sole of the invention which comprises, in a known manner, a front part and a rear part intended to receive the forefoot and the heel respectively and an intermediate part of reduced width between the front parts and back.
• this sole further comprises a vaulted part which is intended to be in contact with the internal arch of the user, arched part which is in progressive elevation from the intermediate, front and rear parts to a given height h , above the plane of the lower faces of said parts.
• arched and intermediate parts are made of deformable materials so that a crushing of the arched part, reducing the height of the elevation of this, causes an external pivoting of the front part and an elongation of the sole and that an internal pivoting of the front part causes an elevation of the arched part and a shortening of the sole.
• the arched part of the sole constitutes a sort of bellows which is constantly in contact with the arch of the user and which is able to follow the movements in height thereof, said movements correlatively causing the internal and external pivoting of the front part relative to the rear part, along a pivot axis which is at the level of the intermediate part and which is therefore offset laterally relative to the longitudinal axis of the sole; it is this offset of the axis which is at the origin of the elongation of the sole during the external pivoting and of its shortening during the internal pivoting.
• the sole according to the present invention plays an active role in the relative mobility of the front and rear parts thanks to the action of the arch on the deformable arched part of the sole.
• the difference in height of the arched part between the external pivoting and the internal pivoting is of the order of 15mm.
• the vaulted part is either a microcellular foam of density between 0.15 and 1, 3, for example made of polyurethane, ethyl vinyl acetate or rubber.
• the sole has a wear pad which is attached at least under the front and rear parts and preferably under only the front, rear and intermediate parts.
• wear flanges for the protection of the vaulted part, on the underside of the latter can be arranged wear flanges, in particular in the same deformable material.
• the front, rear, intermediate and arched parts of the sole form an assembly monobloc made of the same deformable material.
• this one-piece assembly comprises under the arched part notches in relief constituting the protective wear flanges.
• a shoe has already been proposed, in particular in document WO.95 / 06419, comprising a sole, the front part of which has a certain degree of mobility relative to the rear part and which comprises a stiffening element for this sole.
• this stiffening element is shaped so as to allow the pivoting of the front part relative to the rear part around a vertical axis located substantially at the level of the calcaneo-cuboid joint, while preventing or limiting the front - rear bending of the sole as well as the torsion of its front part with respect to its rear part. According to the indications given in this document, it is under these conditions that the shoe provides the user with the best comfort while respecting the natural movements of the foot when walking, running or jumping.
• the stiffening element is a flat, rigid element, having a narrowed shape in the central part and flared at its ends, having a longitudinal axis of symmetry, said stiffening element being arranged, thanks to a flexible housing , in a cavity in the sole.
• This cavity has a shape similar to that of the stiffening element, with a longitudinal axis of symmetry which is arranged along the longitudinal axis of the heel, when the shoe is at rest.
• the narrowed central part of the stiffening element is relatively adjusted inside the housing while on either side of the flared ends are reserved free spaces allowing the pivoting of the front and rear parts of the sole relative to the stiffening element.
• the sole of the invention may include a stiffening element, flat and rigid, having a narrowed shape in the central part and flared at its ends and housed in a cavity dug in the sole.
• the central part of the stiffening element is disposed at the level of the intermediate part of reduced width of the sole; more the stiffening element and the cavity which serves as its housing have an asymmetrical shape with a flared end which extends widely in the rear part of the sole, a side wall of the cavity substantially along the contour of the arched part of the sole.
• the flared end disposed in the rear part of the sole is perfectly adjusted in the cavity, so that free spaces are formed on either side of the stiffening element only in the end flared from the cavity at the front of the sole.
• Either the cavity is closed by a wear pad, which is attached under the front, rear and intermediate parts of the sole, in which case the stiffening element is not visible.
• the cavity is closed by a transparent plastic and the wear pad has a window at said plastic.
• the stiffening element can itself be housed in a plastic, transparent and deformable case, having the shape of the cavity and housed in an adjusted manner therein.
• the sole may include a wear pad made up of two separate parts, reported respectively under the front part and the rear part, each partially covering the plastic casing so as to leave visible in part the stiffening element.
• the purpose of these bellows is to absorb the effects of pivoting of the upper caused by the corresponding pivoting of the sole.
• Figure 1 is a bottom view of the sole
• Figure 2 is a side view of the sole of Figure 1
• Figure 3 is a sectional view of the sole of Figure 1 along the axis III-
• FIG. 4,5 and 6 are bottom plan views illustrating the movements of the sole during use
• Figures 7,8 and 9 are side views of the soles illustrated in Figures 4, 5 and 6 respectively
• FIG. 10 is a perspective view of a shoe fitted with a sole of the invention.
• the sole 1 for shoe and in particular for sports shoe which is the subject of the invention is characterized in that it comprises a vaulted part 2 which is intended to be in contact with the arch of the user and which is in a deformable material capable of allowing this arch to substantially match the different configurations taken by the arch during different movements of the foot during the different phases of walking, running or jumping and to cause correlatively the external and internal pivoting of the front part of the sole relative to its rear part.
• the arched part is arranged between the front part 3 and the rear part 4 of the sole 1 intended to receive the forefoot and the heel of respectively. the user; she is also on the side of the party intermediate 5 which is the part of reduced width I between the front part 3 and the rear part 4 of the sole 1.
• the arched part is in progressive elevation from the front, rear and intermediate parts to a determined height h above the plane formed by the lower faces 3a, 4a and 5a of the front 3, rear 4 and intermediate 5 parts of the sole. 1.
• the whole of the sole 1, constituted by the arched part 2, the front part 3, the rear part 4 and the intermediate part 5 is a monobloc assembly formed in a deformable material, for example a micro-cellular foam preferably having a density between
• the microcellular foam constituting the entire sole 1 was an EVA foam (ethyl vinyl acetate) or possibly made of polyurethane.
• the sole 1 is provided with a wear pad 7 covering the lower faces 3a, 4a and 5a of the front 3, rear 4 and intermediate parts 5, but not covering the lower face 2a of the part vaulted 2.
• the wear pad could possibly also cover the underside of the arched part, provided that it does not substantially alter the deformability properties which are required in the context of the present invention.
• This wear pad 7 is, conventionally, in particular made of rubber.
• the protection of the lower face 2a of the vaulted part 2 can be obtained by forming therein protective tubes 8 which consist of notches formed in the material of this vaulted part 2.
• the part intermediate 5 has a width which is variable in the thickness of the sole, being the smallest (I) at the level of the lower face 5a of the sole. This arrangement appears clearly in FIG. 3.
• the rounding of the upright 21 opposite the arched part 2 makes it possible to avoid the phenomena of buckling of the material constituting the intermediate part 5 during pivoting along the axis 6.
• the sole 1 In order to provide the sole 1 with relative rigidity in front and rear bending, that is to say along a horizontal transverse axis 9, and in torsion of its front part 3 relative to its rear part 4, c that is to say around a longitudinal axis 10, the sole 1 is equipped with a stiffening element 11 which is housed in a cavity 12 formed in the lower face of the intermediate part 5 and partially of the front parts 3 and rear 4.
• the stiffening element 11 is a flat, rigid element, which has a narrowed shape in its central part 13 and which widens towards its ends respectively 14 and 15 in the front 3 and rear 4 parts of the sole.
• the cavity 12 has a side wall 12a which runs along and is substantially parallel to the edge 2a of connection of the arched part 2 with the front 3, intermediate 5 and rear 4 parts.
• the walls ends 12b of the cavity 12, corresponding to the flared ends of the latter are curved, with a concave shape of constant curve, substantially centered on the pivot axis 6.
• this pivot axis 6 is located along the narrowest width I of the intermediate part 5 of the sole 1. Taking into account the presence of the arched part 2 and the offset positioning of the pivot axis 6, the cavity 12 and the element of stiffening 11 are asymmetrical, with their flared ends which are not arranged in the extension of one another but which extend in the front 3 and rear 4 parts so as to occupy a large portion of the width thereof. ci, which favors the torsional rigidity of the sole 1.
• the stiffening element 11 is in the example illustrated, adjusted exactly in the cavity 12 at its central part 13 and its flared end 15 opening into the rear part 4 of the sole 1.
• its flared part 14 opening in the front part 3 of the sole 1 has a less pronounced flaring than that of the cavity so that there are free spaces 16 and 17 on either side of the stiffening element 11 in the end of the cavity 12 formed in the front part 3 of the sole 1.
• Figures 4 to 9 illustrate the behavior of the sole 1 which has just been described during natural movements of the foot during the various phases of walking, running or jumping.
• Figures 5 and 8 the arrangement which had been illustrated in Figures 1 and 2, when the user is at rest, with his feet which rest naturally on all of the parts of the two soles 1.
• This phase is characterized by a elevation of the arched part 2 by a height h and the existence of the free spaces 16, 17 on either side of the flared end 14 of the stiffening element 11.
• Figures 4 and 7 show the configuration of the sole 1 after the impact of the heel on the ground, when the foot is flat with the full load of the weight of the individual distributed only on this foot, while the opposite member performs his pendulum movement from back to front.
• there is a crushing of the arch of the foot which correlatively causes the crushing of the arched part 2 of the sole. 1, reducing the elevation thereof to a height l ⁇ .
• the flattening of the arched part 2 causes at the same time a relative elongation of the sole 1 whose length L 0 is greater than the length L of the sole at rest illustrated in FIGS. 5 and 8.
• Figures 6 and 9 illustrate the movement of the foot during the propulsion phase, that is to say when the heel takes off from the ground until the end of the support and entry into the phase air itself. During this phase, there is a plantar flexion, the arch of the foot deepening.
• the heightening of the arched part 2 also leads to a reduction in the length L of the sole which is then less than the length L of the sole at rest. This decrease is consistent with the natural configuration of the foot during this phase.
• the arch on the arched part of the sole 1 and the deformability of the intermediate part 5 allowing the external and internal pivoting of the front 3 and rear 4 parts relative to the axis 6, a sole which is able to perfectly fit the configuration of the foot during the various movements of the latter during walking, running or jumping, without particular friction or friction.
• the elevation difference between the crushing and the elevation of the arched part is of the order of 15mm.
• the shoe 18 which is equipped with such a sole 1 comprises a rod 19 which covers the foot proper from the outline of the sole 1. So that the rod 19 is not an obstacle to the relative movement of the front parts 3 and rear 4 of the sole 1, it is provided that said rod 19 is equipped with bellows 20, in particular elastic, capable of absorbing the effects of pivoting according to the arrows F and G of the rod 19 caused by the corresponding pivotings of the sole 1
• bellows 20 in particular elastic, capable of absorbing the effects of pivoting according to the arrows F and G of the rod 19 caused by the corresponding pivotings of the sole 1
• the cavity 12 has been closed thanks to the application of the wear pad 7 on the front 3, rear 4 and intermediate 5 parts of the sole 1.
• This pad wear being generally rubber is not transparent or translucent and read the stiffening element 11 is therefore not visible.
• a transparent plastic plate If it is desired to make it visible to the user, it is possible to close the cavity 12 with a transparent plastic plate and create a window to the right of the said plate, either by using a one-piece wear pad. having a recessed opening acting as a window either by using a wear pad in two parts, one covering the front part and the other the rear part of the sole, the interval between the two parts forming the shoe d wear acting as a window.
• a transparent and deformable plastic housing which is fitted in the cavity 12, as taught in the prior document WO.95 / 06419. The above window will allow the stiffening element to be seen through one face of the case in question.
• the present invention is not limited to the embodiment which has just been described by way of non-exhaustive example.
• the deformable sole with arched portion can be implemented with or without a stiffening element.
• the conformation and the function of the stiffening element may also be different from those which have just been described.

Landscapes

• Health & Medical Sciences (AREA)
• Epidemiology (AREA)
• General Health & Medical Sciences (AREA)
• Public Health (AREA)
• Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Priority Applications (1)

Applications Claiming Priority (2)

Publications (1)

Family

ID=9490884

Family Applications (1)

Country Status (12)

Families Citing this family (2)

Citations (3)

• 1996
  • 1996-03-29 FR FR9604205A patent/FR2746605B1/fr not_active Expired - Lifetime
• 1997
  • 1997-03-20 ES ES97490005T patent/ES2152641T3/es not_active Expired - Lifetime
  • 1997-03-20 AT AT97490005T patent/ATE196833T1/de not_active IP Right Cessation
  • 1997-03-20 DE DE69703262T patent/DE69703262D1/de not_active Expired - Lifetime
  • 1997-03-20 EP EP97490005A patent/EP0797937B1/fr not_active Expired - Lifetime
  • 1997-03-24 AR ARP970101172A patent/AR006368A1/es unknown
  • 1997-03-25 WO PCT/FR1997/000530 patent/WO1997036509A1/fr not_active Application Discontinuation
  • 1997-03-25 HU HU9902422A patent/HUP9902422A2/hu unknown
  • 1997-03-25 CZ CZ983134A patent/CZ313498A3/cs unknown
  • 1997-03-25 BR BR9708467A patent/BR9708467A/pt not_active Application Discontinuation
  • 1997-03-25 PL PL97329131A patent/PL329131A1/xx unknown
  • 1997-03-25 CN CN97193524A patent/CN1215313A/zh active Pending

Patent Citations (4)

Non-Patent Citations (2)

Also Published As

Similar Documents

Legal Events