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EP0469138A1 - Inner sole for footwear. - Google Patents

Inner sole for footwear.

Info

Publication number
EP0469138A1
EP0469138A1 EP91905407A EP91905407A EP0469138A1 EP 0469138 A1 EP0469138 A1 EP 0469138A1 EP 91905407 A EP91905407 A EP 91905407A EP 91905407 A EP91905407 A EP 91905407A EP 0469138 A1 EP0469138 A1 EP 0469138A1
Authority
EP
European Patent Office
Prior art keywords
sole
suspended
foot
sole according
zone
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP91905407A
Other languages
German (de)
French (fr)
Other versions
EP0469138B1 (en
Inventor
Loic David
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Societe dImportation de Diffusion ou Distribution dArticles de Sport SIDAS SAS
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP0469138A1 publication Critical patent/EP0469138A1/en
Application granted granted Critical
Publication of EP0469138B1 publication Critical patent/EP0469138B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • A43B7/1415—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 characterised by the location under the foot
    • A43B7/142—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 characterised by the location under the foot situated under the medial arch, i.e. under the navicular or cuneiform bones
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/02—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined wedge-like or resilient
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B17/00—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined
    • A43B17/14—Insoles for insertion, e.g. footbeds or inlays, for attachment to the shoe after the upper has been joined made of sponge, rubber, or plastic materials
    • 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
    • A43B7/1415—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 characterised by the location under the foot
    • A43B7/144—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 characterised by the location under the foot situated under the heel, i.e. the calcaneus bone
    • 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
    • A43B7/1415—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 characterised by the location under the foot
    • A43B7/1445—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 characterised by the location under the foot situated under the midfoot, i.e. the second, third or fourth metatarsal
    • 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
    • A43B7/1415—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 characterised by the location under the foot
    • A43B7/145—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 characterised by the location under the foot situated under the toes, i.e. the phalanges
    • 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
    • A43B7/28—Adapting the inner sole or the side of the upper of the shoe to the sole of the foot

Definitions

  • the present invention relates to an insole of chaus ⁇ sure.
  • the foot has, in its bone conformation more or less arcuate, • 5 a bottom surface that does not rely on the floor uniformly and the different parts are unevenly stretched.
  • the arch is suspended in the manner of a marquee and is supported by muscles, which gives it relative flexibility allowing it to absorb the different pressures applied by the weight of the body on the lower surface of the foot during standing, walking, running or carrying heavy loads, and to build up a shock absorber of this weight.
  • the heel, the metatarsal heads, and in particular the first and the fifth, as well as the big toe are the most stressed bearing surfaces.
  • insoles molded to the shape 0 of the lower surface of the foot of the user and which espouse it perfectly. These soles provide good arch support, but cannot be produced industrially, and are reserved for specific jobs by people with the skills and equipment necessary to carry them out, such as podiatrists or orthopedists. 5
  • the object of the invention is to provide a sole which is produced industrially, and which nevertheless has capacities for immediate adaptation to the shape of the user's foot, without requiring the setting using complex means.
  • Another object of the invention is to provide a sole adapted to the shape of the user's foot, that is to say providing precise anatomical support, but nevertheless elastic, to fulfill the physiological function of shock absorber and ensure good comfort.
  • the sole it relates to is made of a semi-rigid thermoformable material and is obtained by molding so as to have a profile corresponding to the general shape of the lower surface of a standard foot, the outer edge of which is intended, in its central part, to bear against the upper of the shoe substantially perpendicular thereto, and whose inner edge, intended to bear against the inner wall of the central area of the upper substantially tangential thereto , is raised relative to the lower part of the sole, so that the zone which it delimits forms a suspended zone rising regularly from the lower part of the sole, substantially from the center line thereof.
  • the suspended area of the sole being arranged so that, after putting the sole in the shoe, it adapts to the particular shape of the foot of the u iliator under the action of the weight thereof, by sliding along the upper of the sole area in tangential support against the latter.
  • this sole although produced industrially, can acquire the shape corresponding to the exact anatomy of the foot of the user, thanks to the blocking of the outer edge against the upper, and to the possibility of sliding of the inner edge taking tangential support against the rod, accompanied by a deformation of the suspended area depending on the shape of the user's foot.
  • the sole providing, permanently, a bearing base to the entire foot, increasing the stability of the latter and avoiding the twists of the ankles implied by certain characteristic morphologies.
  • the circulation of blood in the foot is stimulated by "pump effect", due to the suspended area which flexes elastically when the foot is pressed on the ground.
  • the suspended area is mechanically deformable.
  • the hanging area has slots, recesses or notches opening into the inner edge delimiting the suspen ⁇ due area.
  • the sole is thus self-adaptable to the foot while possessing the qualities of elasticity necessary for the movements of the feet during certain activities, in particular sports.
  • the suspended area is made of a thermoformable material at a temperature below 100 ° C.
  • the sole is heatable, using simple means, such as a hair dryer to soften the sole and make it malleable before introducing it into a shoe and shaping it by pressing a foot of the user, which allows adaptation to the morphological cases of extremely arched or flat feet, and for which the amplitude of mechanical deformation of the sole is not sufficient.
  • the heel of the sole is delimited by a raised edge intended to take a tangential support against the upper, and delimiting a suspended area.
  • This suspended zone also ensures self-adaptation of the rear part of the sole to the shape of the user's heel, and stabilizes the heel laterally when it comes into contact with the ground.
  • the sole is produced by thermoforming, on a corresponding shape, of at least two layers of materials assembled together, at least one of which is semi-rigid, these layers being able to be formed, for example, by crosslinked polyethylene or non-crosslinked, a thermoformable elastomer, supports coated with polyisoprene or polycaprolactone derivatives. These materials have a certain rigidity allowing an effective hold and support for the foot.
  • the sole is produced by injection, the materials used can be of polyvinyl chloride, polyurethane, or ABS (Acrylonitrile - Butadiene - Styrene) type.
  • the shape, the orientation and the number of these notches, slots or recesses make it possible to adapt the elasticity of the sole and the progressiveness of its flexibility as a function of the desired support of the arch and the desired performance.
  • the layers of semi-rigid thermomouldable material comprise notches.
  • the flexibility of the sole is increased.
  • the sole includes cushioning parts and support parts arranged in the impact zones.
  • the layers of semi-rigid material include cutouts covered by the outer layers.
  • shock absorbing mattresses are produced, the cavities delimited by the cutouts possibly containing air, a fluid or a shock absorbing material.
  • Figure 1 is a perspective view
  • Figure 2 is a bottom view
  • Figure 3 is a side view
  • Figure 4 is a sectional view along IV-IV of Figure 2;
  • Figure 5 is a cross-sectional view of a shoe fitted with this sole;
  • Figures 6,7 and 8 are bottom views of three different embodiments of this sole
  • Figure 9 is a sectional view along IX-IX of Figure 7.
  • Figure 1 shows a sole 2 having a profile correspon ⁇ dant to the general shape of the lower surface of the foot and which is molded in a thermoformable material at low temperature , that is to say between 65 and 100 ° C.
  • the edge 2a located on the inner side of the foot is raised so that the zone 2c of the sole 2 which it delimits forms a suspended arch 3 substantially from the center line of the sole 2, this suspended zone tangentially connecting with the bottom of the shoe.
  • the rear part of the sole 2 includes a raised edge 2d delimiting a bowl.
  • the edge 2b located on the outer side of the foot is intended to bear against the upper 5 of the shoe 6 substantially perpendicular thereto, while the edge 2a located on the inner side of the foot is intended to bear against the internal wall of the central zone 5a of the rod 5, substantially tangential to it.
  • the edge 2d is also intended to bear substantially tangentially to the rod 5.
  • the sole is stabilized by pressing its edges 2a and 2b against the rod 5.
  • the foot is supported on it in order to make it acquire the shape corresponding to the exact anatomy of its lower surface.
  • the arch 3 defines a void 10 between the sole 2 and the first 7 at the bottom of the shoe 6, allowing, when the arch of the foot is in abutment against the zone 2c of the sole 2, to make this zone 2c elastically deformable so as to what it can sink when the foot exerts pressure on it and resume its initial shape when this pressure is released.
  • the self-adaptation of the sole 2 to the particular shape of this foot is achieved by sliding along the upper 5 under the action of the pressure thereof when the shoe 6 is closed, areas in tangential support.
  • Figures 2 to 'i show from different angles an improved embodiment of this sole in which the same elements are designated by the same references as above.
  • the sole 20 which they represent is produced by thermoforming on a corresponding shape and assembly between them of two layers 21 and 22, the semi-rigid layer 21 being constituted by cross-linked polyethylene and the layer 22 by an elastic foam. comfort, such as polyurethane.
  • the part 20c forming the arch 3 comprises slots 25 and notches 26 opening into the edge 20a of the sole 20, formed substantially transversely relative to the longitudinal axis of the latter, and making it possible to modulate its elasticity and the progressiveness of its flexibility.
  • the sole 20 comprises zones 30 of lesser thickness constituted by cutouts made in the layer 21 and which make it possible to increase its flexibility at the level of the most stressed support surfaces of the foot, that is to say ie the big toe, the heads metatarsals and the heel.
  • Figures 6 to 8 show, seen from below, soles 201, 202 and 203 comprising a layer 221 of cross-linked polyethylene and a layer 222 of elastic comfort polyurethane foam.
  • the layer 221 includes indentations 226 in the metatarsal areas, increasing its flexibility there.
  • the sole 201 further comprises a piece 223 of polyurethane foam interposed between the layers 221 and 222 increasing the damping of its front part, and a piece 22 of the heel support in shock absorbing foam, such as neoprene, polyurethane foam or expanded polyvinyl chloride.
  • the layer 221 comprises a circular cut 230 at the heel, as can be seen in FIG. 9.
  • the layer 222 and the part 224 cover this cut 230, which makes it possible to form an increasing air mattress the comfort and flexibility of the sole 202.
  • the sole 203 includes slots 225 increasing the flexibility of its raised part 203c.
  • the flexibility of the sole according to the invention can be adapted to different morphologies.
  • the invention is naturally not limited to the various embodiments described above by way of examples. On the contrary, it embraces all the variant embodiments and one would not depart from the framework of the invention by using other materials such as thermoformable elastomer, supports coated with de-poiyisoprene or derivatives polycaprolactone, or by making the sole by injection of polyvinyl chloride, polyurethane or ABS materials.

Landscapes

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

Abstract

The disclosed sole is made of a semi-rigid heat-shapable material and is obtained by moulding so as to present a profile corresponding to the general shape of the lower surface of a standard foot, of which the external edge (2b) is intended, in its central portion, to bear against the upper (5) of the shoe (6) substantially perpendicularly thereto, and of which the inner edge (2a), intended to bear against the internal wall of the central area (5a) of the upper (5) substantially tangentially thereto, is raised with respect to the low portion of the sole so that the area (2c) which it delimits forms a suspended zone rising progressively from the low portion of the sole, substantially from the median line thereof up to the raised inner edge (2a), the suspended zone (2c) of the sole being arranged so that, after setting the sole in the shoe, it adapts itself to the particular shape of the user's foot under the effect of the user's weight, by sliding along the upper of the sole region abutting tangentially there against.

Description

SEMELLE INTERIEURE DE CHAUSSURE SHOE INSOLE
La présente invention concerne une semelle intérieure de chaus¬ sure.The present invention relates to an insole of chaus¬ sure.
Le pied a, par sa conformation osseuse plus ou moins arquée, •5 une surface inférieure qui ne s'appuie pas sur le sol de manière uniforme et dont les différentes parties sont inégalement sollicitées.The foot has, in its bone conformation more or less arcuate, • 5 a bottom surface that does not rely on the floor uniformly and the different parts are unevenly stretched.
La voûte plantaire est suspendue à la manière d'un chapiteau et est soutenue musculairement, ce qui lui donne une relative flexibilité lui permettant d'absorber les différentes pressions appliquées par le i n poids du corps sur la surface inférieure du pied pendant la station debout, la marche, la course ou le port de charges lourdes, et de constituer un amortisseur de ce poids.The arch is suspended in the manner of a marquee and is supported by muscles, which gives it relative flexibility allowing it to absorb the different pressures applied by the weight of the body on the lower surface of the foot during standing, walking, running or carrying heavy loads, and to build up a shock absorber of this weight.
Le talon, les têtes métatarsiennes, et notamment la première et la cinquième, ainsi que le gros orteil sont les surfaces d'appui les 15 plus sollicitées.The heel, the metatarsal heads, and in particular the first and the fifth, as well as the big toe are the most stressed bearing surfaces.
Pour soutenir le pied et répartir son appui sur le sol, il existe actuellement de nombreuses semelles offrant un profil anatomique, pouvant être regroupées en deux types principaux :To support the foot and distribute its support on the ground, there are currently many soles offering an anatomical profile, which can be grouped into two main types:
- d'une part, celles réalisées industriellement, qui ont un profil 0 correspondant à la forme générale de la surface inférieure du pied et qui peuvent comprendre des matières de rembourrage souples ou amortis¬ santes sur tout ou partie de leur surface et en particulier au niveau des parties du pied soumises à des appuis importants voire à des chocs. Ces semelles présentent l'inconvénient de ne pas assurer un soutien efficace du pied puisqu'elles ne sont pas adaptées à la morphologie de la voûte plantaire de chaque utilisateur, qui est très variable suivant les individus ; il en résulte une sollicitation douloureuse du muscle soute¬ nant la voûte plantaire, pouvant entraîner des crampes ;- On the one hand, those produced industrially, which have a profile 0 corresponding to the general shape of the lower surface of the foot and which may include flexible or cushioning materials for health over all or part of their surface and in particular at level of the parts of the foot subjected to significant supports or even to shocks. These soles have the disadvantage of not ensuring effective support for the foot since they are not adapted to the morphology of the arch of each user, which is very variable depending on the individual; this results in painful solicitation of the muscle supporting the arch of the foot, which can cause cramps;
- d'autre part, des semelles intérieures moulées à la forme 0 de la surface inférieure du pied de l'utilisateur et qui l'épousent parfaite¬ ment. Ces semelles assurent un bon soutien de la voûte plantaire, mais ne peuvent être réalisées industriellement, et sont réservées à des emplois particuliers par des personnes ayant les compétences et le matériel nécessaires à leur réalisation, tel que des podologues ou des orthopédistes. 5 Le but de l'invention est de fournir une semelle qui soit réalisée industriellement, et qui possède néanmoins des capacités d'adaptation immédiate à la forme du pied de l'utilisateur, sans nécessiter la mise en oeuvre de moyens complexes. Un autre but de l'invention est de fournir une semelle adaptée à la forme du pied de l'utilisateur, c'est-à- dire assurant un soutien anatomique précis, mais néanmoins élastique, pour remplir la fonction physiologique d'amortisseur et assurer un bon confort.- On the other hand, insoles molded to the shape 0 of the lower surface of the foot of the user and which espouse it perfectly. These soles provide good arch support, but cannot be produced industrially, and are reserved for specific jobs by people with the skills and equipment necessary to carry them out, such as podiatrists or orthopedists. 5 The object of the invention is to provide a sole which is produced industrially, and which nevertheless has capacities for immediate adaptation to the shape of the user's foot, without requiring the setting using complex means. Another object of the invention is to provide a sole adapted to the shape of the user's foot, that is to say providing precise anatomical support, but nevertheless elastic, to fulfill the physiological function of shock absorber and ensure good comfort.
A cet effet, la semelle qu'elle concerne est réalisée en un matériau thermoformable semi-rigide et est obtenue par moulage de façon à présenter un profil correspondant à la forme générale de la surface inférieure d'un pied standard, dont le bord extérieur est destiné, dans sa partie centrale, à prendre appui contre la tige de la chaussure sensiblement perpendiculairement à celle-ci, et dont le bord intérieur, destiné à prendre appui contre la paroi interne de la zone centrale de la tige sensiblement tangentiellement à celle-ci, est surélevé par rapport à la partie basse de la semelle, de telle sorte que la zone qu'il délimite forme une zone suspendue s'élevant régulièrement à partir de la partie basse de la semelle, sensiblement depuis la ligne médiane de celle-ci jusqu'au bord intérieur surélevé, la zone suspendue de la semelle étant agencée pour que, après mise de la semelle dans la chaussure, elle s'a¬ dapte à la forme particulière du pied de l'utilisateur sous l'action du poids de celui-ci, par glissement le long de la tige de la zone de la semelle en appui tangentiel contre celle-ci.To this end, the sole it relates to is made of a semi-rigid thermoformable material and is obtained by molding so as to have a profile corresponding to the general shape of the lower surface of a standard foot, the outer edge of which is intended, in its central part, to bear against the upper of the shoe substantially perpendicular thereto, and whose inner edge, intended to bear against the inner wall of the central area of the upper substantially tangential thereto , is raised relative to the lower part of the sole, so that the zone which it delimits forms a suspended zone rising regularly from the lower part of the sole, substantially from the center line thereof. up to the raised inner edge, the suspended area of the sole being arranged so that, after putting the sole in the shoe, it adapts to the particular shape of the foot of the u iliator under the action of the weight thereof, by sliding along the upper of the sole area in tangential support against the latter.
Ainsi, cette semelle, quoique réalisée industriellement, peut acquérir la forme correspondant à l'anatomie exacte du pied de l'utilisa¬ teur, grâce au blocage du bord extérieur contre la tige, et à la possibilité de glissement du bord intérieur prenant appui tangentiellement contre la tige, accompagné d'une déformation de la zone suspendue en fonction de la forme du pied de l'utilisateur.Thus, this sole, although produced industrially, can acquire the shape corresponding to the exact anatomy of the foot of the user, thanks to the blocking of the outer edge against the upper, and to the possibility of sliding of the inner edge taking tangential support against the rod, accompanied by a deformation of the suspended area depending on the shape of the user's foot.
Le soutien de la voûte plantaire est parfaitement assuré, la semelle offrant, en permanence, une base portante a l'ensemble du pied, augmentant la stabilité de celui-ci et évitant les torsions des chevilles qu'impliquent certaines morphologies caractéristiques. De plus, la circula¬ tion du sang dans le pied est stimulée par "effet de pompe", dû à la zone suspendue qui fléchit élastiquement lors de l'appui du pied sur le sol. Selon une première forme d'exécution de cette semelle, la zone suspendue est déformable mécaniquement.The support of the arch of the foot is perfectly ensured, the sole providing, permanently, a bearing base to the entire foot, increasing the stability of the latter and avoiding the twists of the ankles implied by certain characteristic morphologies. In addition, the circulation of blood in the foot is stimulated by "pump effect", due to the suspended area which flexes elastically when the foot is pressed on the ground. According to a first embodiment of this sole, the suspended area is mechanically deformable.
A cet effet, la zone suspendue comporte des fentes, évidements ou encoches débouchant dans le bord intérieur délimitant la zone suspen¬ due.For this purpose, the hanging area has slots, recesses or notches opening into the inner edge delimiting the suspen¬ due area.
La semelle est ainsi auto-adaptable au pied tout en possédant des qualités d'élasticité nécessaires aux mouvements des pieds pendant certaines activités, notamment sportives.The sole is thus self-adaptable to the foot while possessing the qualities of elasticity necessary for the movements of the feet during certain activities, in particular sports.
La forme, l'orientation et le nombre de ces encoches, fentes ou évidements permettent d'adapter l'élasticité de la semelle et la pro¬ gressivité de sa flexibilité en fonction du soutien désiré de la voûte plantaire et des performances recherchées. Selon une autre caractéristique de l'invention, la zone suspendue est réalisée en un matériau thermoformable à une température inférieure à 100°C.The shape, the orientation and the number of these notches, slots or recesses make it possible to adapt the elasticity of the sole and the progressiveness of its flexibility as a function of the desired support of the arch and the desired performance. According to another characteristic of the invention, the suspended area is made of a thermoformable material at a temperature below 100 ° C.
Il est ainsi possible de chauffer la semelle, à l'aide de moyens simples, tels qu'un sèche-cheveux pour ramollir la semelle et la rendre malléable avant de l'introduire dans une chaussure et la mettre en forme par appui d'un pied de l'utilisateur, ce qui permet une adaptation aux cas morphologiques de pieds extrêmement cambrés ou plats, et pour lesquels l'amplitude de déformation mécanique de la semelle n'est pas suffisante. Avantageusement, le talon de la semelle est délimité par un bord relevé destiné à prendre un appui tangentiel contre la tige, et délimitant une zone suspendue.It is thus possible to heat the sole, using simple means, such as a hair dryer to soften the sole and make it malleable before introducing it into a shoe and shaping it by pressing a foot of the user, which allows adaptation to the morphological cases of extremely arched or flat feet, and for which the amplitude of mechanical deformation of the sole is not sufficient. Advantageously, the heel of the sole is delimited by a raised edge intended to take a tangential support against the upper, and delimiting a suspended area.
Cette zone suspendue assure également une auto-adaptation de la partie arrière de la semelle à la forme du talon de l'utilisateur, et stabilise latéralement le talon lors de sa prise de contact avec le sol.This suspended zone also ensures self-adaptation of the rear part of the sole to the shape of the user's heel, and stabilizes the heel laterally when it comes into contact with the ground.
Suivant une première possibilité, la semelle est réalisée par thermoformage, sur une forme correspondante, d'au moins deux couches de matériaux assemblés entre elles dont au moins une est semi-rigide, ces couches pouvant être constituées, par exemple, par du polyéthylène réticulé ou non réticulé, un élastomère thermoformable, des supports enduits de polyisoprène ou de dérivés de polycaprolactone. Ces matériaux ont une certaine rigidité permettant une tenue et un soutien efficace pour le pied. Suivant une deuxième possibilité, la semelle est réalisée par injection, les matériaux employés pouvant être de type polychlorure de vinyle, polyuréthane, ou ABS (Acrylonitrile - Butadiène - Styrène). La forme, l'orientation et le nombre de ces encoches, fentes ou évidements permettent d'adapter l'élasticité de la semelle et la pro¬ gressivité de sa flexibilité en fonction du soutien désiré de la voûte plantaire et des performances recherchées. De préférence, dans les zones métatarsiennes, les couches en matériau thermomalléable semi-rigide comprennent des échancrures. Ainsi, dans ces zones très sollicitées, la souplesse de la semelle est augmentée.According to a first possibility, the sole is produced by thermoforming, on a corresponding shape, of at least two layers of materials assembled together, at least one of which is semi-rigid, these layers being able to be formed, for example, by crosslinked polyethylene or non-crosslinked, a thermoformable elastomer, supports coated with polyisoprene or polycaprolactone derivatives. These materials have a certain rigidity allowing an effective hold and support for the foot. According to a second possibility, the sole is produced by injection, the materials used can be of polyvinyl chloride, polyurethane, or ABS (Acrylonitrile - Butadiene - Styrene) type. The shape, the orientation and the number of these notches, slots or recesses make it possible to adapt the elasticity of the sole and the progressiveness of its flexibility as a function of the desired support of the arch and the desired performance. Preferably, in the metatarsal zones, the layers of semi-rigid thermomouldable material comprise notches. Thus, in these very stressed areas, the flexibility of the sole is increased.
Pour un confort parfait, la semelle comprend des pièces amortis- santés et des pièces de soutien disposées dans les zones d'impact.For perfect comfort, the sole includes cushioning parts and support parts arranged in the impact zones.
Avantageusement, dans le cas où la semelle est réalisée par thermoformage de- plusieurs couches de matériaux assemblées entre elles, les couches en matériau semi-rigide comportent des découpes recouvertes par les couches extérieures. Ainsi, des matelas amortissants sont réalisés, les cavités délimitées par les découpes pouvant contenir de l'air, un fluide ou un matériau amortissant.Advantageously, in the case where the sole is produced by thermoforming of several layers of material assembled together, the layers of semi-rigid material include cutouts covered by the outer layers. Thus, shock absorbing mattresses are produced, the cavities delimited by the cutouts possibly containing air, a fluid or a shock absorbing material.
De toute façon, l'invention sera bien comprise à l'aide de la description qui suit, en référence au dessin schématique annexé représen¬ tant, à titre d'exemples non limitatifs, plusieurs formes de réalisation d'une semelle intérieure selon l'invention.In any case, the invention will be better understood with the aid of the description which follows, with reference to the appended schematic drawing representing, as non-limiting examples, several embodiments of an insole according to the invention.
Figure 1 en est une vue en perspective ; Figure 2 en est une vue de dessous ; Figure 3 en est une vue de côté ;Figure 1 is a perspective view; Figure 2 is a bottom view; Figure 3 is a side view;
Figure 4 en est une vue en coupe selon IV-IV de figure 2 ; Figure 5 est une vue en coupe transversale d'une chaussure équipée de cette semelle ;Figure 4 is a sectional view along IV-IV of Figure 2; Figure 5 is a cross-sectional view of a shoe fitted with this sole;
Figures 6,7 et 8 sont des vues de dessous de trois formes de réalisation différentes de cette semelle ;Figures 6,7 and 8 are bottom views of three different embodiments of this sole;
Figure 9 en est une vue en coupe selon IX-IX de figure 7. La figure 1 représente une semelle 2 ayant un profil correspon¬ dant à la forme générale de la surface inférieure du pied et qui est moulée en un matériau thermoformable à basse température, c'est-à-dire entre 65 et 100°C.Figure 9 is a sectional view along IX-IX of Figure 7. Figure 1 shows a sole 2 having a profile correspon¬ dant to the general shape of the lower surface of the foot and which is molded in a thermoformable material at low temperature , that is to say between 65 and 100 ° C.
Le bord 2a situé du côté intérieur du pied est surélevé de façon à ce que la zone 2c de la semelle 2 qu'il délimite forme une voûte sus¬ pendue 3 sensiblement à partir de la ligne médiane de la semelle 2, cette zone suspendue se raccordant tangentiellement avec le fond de la chaussure. La partie arrière de la semelle 2 comprend un bord relevé 2d délimitant une cuvette .The edge 2a located on the inner side of the foot is raised so that the zone 2c of the sole 2 which it delimits forms a suspended arch 3 substantially from the center line of the sole 2, this suspended zone tangentially connecting with the bottom of the shoe. The rear part of the sole 2 includes a raised edge 2d delimiting a bowl.
Comme le montre la figure 5, le bord 2b situé du côté extérieur du pied est destiné à prendre appui contre la tige 5 de la chaussure 6 sensiblement perpendiculairement à celle-ci, tandis que le bord 2a situé du côté intérieur du pied est destiné à prendre appui contre la paroi interne de la zone centrale 5a de la tige 5, sensiblement tangentiel¬ lement à celle-ci. Le bord 2d est également destiné à prendre appui sensiblement tangentiellement à la tige 5. La semelle est stabilisée par l'appui de ses bords 2a et 2b contre la tige 5. Le pied est mis en appui sur elle afin de lui faire acquérir la forme correspondant à l'anatomie exacte de sa surface inférieure. La voûte 3 délimite un vide 10 entre la semelle 2 et la première 7 au fond de la chaussure 6, permettant, lorsque la voûte plantaire est en appui contre la zone 2c de la semelle 2, de rendre cette zone 2c élastiquement déformable de manière à ce qu'elle puisse s'enfoncer lorsque le pied exerce une pression sur elle et reprendre sa forme initiale lorsque cette pression se relâche. Ainsi, l'auto-adaptation de la semelle 2 à la forme particulière de ce pied est réalisée, par glissement le long de la tige 5 sous l'action de la pression de celle-ci lorsque la chaussure 6 est fermée, des zones en appui tangentiel.As shown in Figure 5, the edge 2b located on the outer side of the foot is intended to bear against the upper 5 of the shoe 6 substantially perpendicular thereto, while the edge 2a located on the inner side of the foot is intended to bear against the internal wall of the central zone 5a of the rod 5, substantially tangential to it. The edge 2d is also intended to bear substantially tangentially to the rod 5. The sole is stabilized by pressing its edges 2a and 2b against the rod 5. The foot is supported on it in order to make it acquire the shape corresponding to the exact anatomy of its lower surface. The arch 3 defines a void 10 between the sole 2 and the first 7 at the bottom of the shoe 6, allowing, when the arch of the foot is in abutment against the zone 2c of the sole 2, to make this zone 2c elastically deformable so as to what it can sink when the foot exerts pressure on it and resume its initial shape when this pressure is released. Thus, the self-adaptation of the sole 2 to the particular shape of this foot is achieved by sliding along the upper 5 under the action of the pressure thereof when the shoe 6 is closed, areas in tangential support.
Les figures 2 à 'i représentent sous différents angles une forme de réalisation perfectionnée de cette semelle dans laquelle les mêmes éléments sont désignés par les mêmes références que précédemment. La semelle 20 qu'elles représentent est réalisée par thermofor¬ mage sur une forme correspondante et assemblage entre elles de deux couches 21 et 22, la couche semi-rigide 21 étant constituée par du poly- éthylène réticulé et la couche 22 par une mousse élastique de confort, telle que du polyuréthane. La partie 20c formant la voûte 3 comprend des fentes 25 et des encoches 26 débouchant dans le bord 20a de la semelle 20, ménagées sensiblement transversalement par rapport à l'axe longitudinal de cette dernière, et permettant de moduler son élasticité et la progressivité de sa flexibilité. En outre, la semelle 20 comprend des zones 30 d'épais- seur moindre constituées par des découpes ménagées dans la couche 21 et qui permettent d'augmenter sa souplesse au niveau des surfaces d'appui du pied les plus sollicités, c'est-à-dire le gros orteil, les têtes métatarsiennes et le talon.Figures 2 to 'i show from different angles an improved embodiment of this sole in which the same elements are designated by the same references as above. The sole 20 which they represent is produced by thermoforming on a corresponding shape and assembly between them of two layers 21 and 22, the semi-rigid layer 21 being constituted by cross-linked polyethylene and the layer 22 by an elastic foam. comfort, such as polyurethane. The part 20c forming the arch 3 comprises slots 25 and notches 26 opening into the edge 20a of the sole 20, formed substantially transversely relative to the longitudinal axis of the latter, and making it possible to modulate its elasticity and the progressiveness of its flexibility. In addition, the sole 20 comprises zones 30 of lesser thickness constituted by cutouts made in the layer 21 and which make it possible to increase its flexibility at the level of the most stressed support surfaces of the foot, that is to say ie the big toe, the heads metatarsals and the heel.
Les figures 6 à 8 représentent, vues de dessous, des semelles 201,202 et 203 comprenant une couche 221 de polyethylene réticulé et une couche 222 de mousse de polyurethane élastique de confort. La couche 221 comprend des échancrures 226 dans les zones métatar¬ siennes, augmentant sa souplesse à cet endroit.Figures 6 to 8 show, seen from below, soles 201, 202 and 203 comprising a layer 221 of cross-linked polyethylene and a layer 222 of elastic comfort polyurethane foam. The layer 221 includes indentations 226 in the metatarsal areas, increasing its flexibility there.
La semelle 201 comprend en outre une pièce 223 en mousse de polyurethane interposée entre les couches 221 et 222 augmentant l'amortissement de sa partie avant, et une pièce 22 de soutien du talon en mousse amortissante, telle que néoprène, mousse de polyurethane ou de polychlorure de vinyle expansé.The sole 201 further comprises a piece 223 of polyurethane foam interposed between the layers 221 and 222 increasing the damping of its front part, and a piece 22 of the heel support in shock absorbing foam, such as neoprene, polyurethane foam or expanded polyvinyl chloride.
Dans la semelle 202, la couche 221 comprend une découpe circulaire 230 au niveau du talon, comme cela est visible sur la figure 9. La couche 222 et la pièce 224 recouvrent cette découpe 230, ce qui permet de constituer un matelas d'air augmentant le confort et la souples¬ se de la semelle 202.In the sole 202, the layer 221 comprises a circular cut 230 at the heel, as can be seen in FIG. 9. The layer 222 and the part 224 cover this cut 230, which makes it possible to form an increasing air mattress the comfort and flexibility of the sole 202.
La semelle 203 comprend des fentes 225 augmentant la souplesse de sa partie surélevée 203c.The sole 203 includes slots 225 increasing the flexibility of its raised part 203c.
Grâce à la conformation des différentes couches ou pièces et à leur positionnement, la souplesse de la semelle selon l'invention peut être adaptée aux différentes morphologies.Thanks to the conformation of the different layers or parts and to their positioning, the flexibility of the sole according to the invention can be adapted to different morphologies.
L'invention n'est naturellement pas limitée aux différentes formes de réalisation décrites ci-dessus à titre d'exemples. Elle en embras¬ se au contraire toutes les variantes de réalisation et l'on ne s'éloignerait pas du cadre de l'invention en employant d'autres matériaux tels que de l'élastomère thermoformable, des supports enduits de- poiyisoprène ou de dérivés de polycaprolactone, ou en réalisant la semelle par injection de matériaux de type polychlorure de vinyle, polyurethane ou ABS. The invention is naturally not limited to the various embodiments described above by way of examples. On the contrary, it embraces all the variant embodiments and one would not depart from the framework of the invention by using other materials such as thermoformable elastomer, supports coated with de-poiyisoprene or derivatives polycaprolactone, or by making the sole by injection of polyvinyl chloride, polyurethane or ABS materials.

Claims

REVENDICATIONS
1.- Semelle intérieure de chaussure, caractérisée en ce qu'elle est réalisée en un matériau thermoformable semi-rigide et est obtenue par moulage de façon à présenter un profil correspondant à la forme générale de la surface inférieure d'un pied standard, dont le bord exté¬ rieure (2b) est destiné, dans sa partie centrale, à prendre* appui contre la tige (5) de la chaussure (6) sensiblement perpendiculairement à celle-ci, et dont le bord intérieur (2a), destiné à prendre appui contre la paroi interne de la zone centrale (5a) de la tige (5) sensiblement tangentielle¬ 0 ment à celle-ci, est surélevé par rapport à la partie basse de la« semelle, de telle sorte que la zone (2c) qu'il délimite forme une zone suspendue s'élevant régulièrement à partir de la partie basse de la semelle, sensible¬ ment depuis la ligne médiane de celle-ci jusqu'au bord intérieur (2a) surélevé, la zone (2c) suspendue de la semelle étant agencée pour que, -5 après mise de la semelle dans la chaussure, elle s'adapte à la forme particulière du pied de l'utilisateur sous l'action du poids de celui-ci, par glissement le long de la tige de la zone de la semelle en appui tangen- tiel contre celle-ci.1.- shoe insole, characterized in that it is made of a semi-rigid thermoformable material and is obtained by molding so as to have a profile corresponding to the general shape of the lower surface of a standard foot, of which the outer edge (2b) is intended, in its central part, to rest * against the upper (5) of the shoe (6) substantially perpendicular to the latter, and whose inner edge (2a), intended to bear against the inner wall of the central zone (5a) of the rod (5) substantially tangential to it, is raised relative to the lower part of the "sole, so that the zone (2c ) that it delimits forms a suspended zone rising regularly from the lower part of the sole, substantially from the median line thereof to the raised inner edge (2a), the suspended zone (2c) of the sole being arranged so that, -5 after putting the a sole in the shoe, it adapts to the particular shape of the user's foot under the action of its weight, by sliding along the upper of the area of the sole in tangential support against this one.
2.- Semelle selon la revendication 1, caractérisée en ce que 0 la zone suspendue (2c) est deformable mécaniquement.2.- sole according to claim 1, characterized in that 0 the suspended area (2c) is mechanically deformable.
3.- Semelle selon la revendication 1, caractérisée en ce que la zone suspendue (2c) comporte des fentes (25, 225), évidements ou encoches (26) débouchant dans le bord intérieur (2c, 20c) délimitant la zone suspendue. ._ Semelle selon l'une quelconque des revendications 1 à 3, caractérisée en ce que la zone suspendue (2c) est réalisée en un matériau thermoformable à une température inférieure à 100°C, et est deformable mécaniquement après élévation de sa température.3.- sole according to claim 1, characterized in that the suspended area (2c) has slots (25, 225), recesses or notches (26) opening into the inner edge (2c, 20c) delimiting the suspended area. ._ Sole according to any one of claims 1 to 3, characterized in that the suspended zone (2c) is made of a thermoformable material at a temperature below 100 ° C, and is mechanically deformable after raising its temperature.
5.- Semelle selon l'une quelconque des revendications 1 à , 0 caractérisée en ce que son talon est délimité par un bord relevé (2d) destiné à prendre un appui tangentiel contre la tige, et délimitant une zone suspendue.5.- Sole according to any one of claims 1 to, 0 characterized in that its heel is delimited by a raised edge (2d) intended to take a tangential support against the rod, and delimiting a suspended area.
6.- Semelle selon l'une quelconque des revendications 1 à 5, caractérisée en ce qu'elle comprend au moins deux couches de matériaux, 5 assemblées l'une à l'autre, dont au moins une est semi-rigide.6. Sole according to any one of claims 1 to 5, characterized in that it comprises at least two layers of material, 5 joined to one another, at least one of which is semi-rigid.
7.- Semelle selon la revendication 6, caractérisée en ce que, dans les zones métatarsiennes, les couches (21, 221) en matériau thermo- formable comportant des echancrures (226), recouvertes par la matière des couches extérieures (222, 224).7. Sole according to claim 6, characterized in that, in the metatarsal areas, the layers (21, 221) made of thermo-material formable comprising notches (226), covered by the material of the outer layers (222, 224).
S.- Semelle selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la semelle (2) est obtenue par injection. 9.- Semelle selon l'une quelconque des revendications 1 à 7, caractérisée en ce que la semelle (2) est obtenue par thermoformage sur une forme.S.- Sole according to any one of claims 1 to 7, characterized in that the sole (2) is obtained by injection. 9. A sole according to any one of claims 1 to 7, characterized in that the sole (2) is obtained by thermoforming on a form.
10.- Semelle selon l'une quelconque des revendications 1 à10.- Sole according to any one of claims 1 to
9, caractérisée en ce qu'elle comporte des pièces amortissantes (223) et des pièces de soutien (224) disposées dans les zones d'impact. * 9, characterized in that it comprises damping parts (223) and support parts (224) arranged in the impact zones. *
EP91905407A 1990-02-20 1991-02-20 Inner sole for footwear Expired - Lifetime EP0469138B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9002819A FR2658397B1 (en) 1990-02-20 1990-02-20 PROCESS FOR PRODUCING AN INNER SOLE OF A SHOE AND INNER SOLE OBTAINED BY THIS PROCESS.
FR9002819 1990-02-20
PCT/FR1991/000137 WO1991012740A1 (en) 1990-02-20 1991-02-20 Inner sole for footwear

Publications (2)

Publication Number Publication Date
EP0469138A1 true EP0469138A1 (en) 1992-02-05
EP0469138B1 EP0469138B1 (en) 1994-07-20

Family

ID=9394427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91905407A Expired - Lifetime EP0469138B1 (en) 1990-02-20 1991-02-20 Inner sole for footwear

Country Status (7)

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EP (1) EP0469138B1 (en)
JP (1) JPH0698053B2 (en)
AT (1) ATE108622T1 (en)
CA (1) CA2050299C (en)
DE (1) DE69102951T2 (en)
FR (1) FR2658397B1 (en)
WO (1) WO1991012740A1 (en)

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US5915820A (en) 1996-08-20 1999-06-29 Adidas A G Shoe having an internal chassis
CN1520761A (en) * 1996-10-02 2004-08-18 HBNЬҵ�������ι�˾ Improved shoe construction and method of making same
US6151803A (en) * 1997-04-22 2000-11-28 Charles; Nathaniel O. Puncture resistant insole
DE29713351U1 (en) * 1997-07-26 1997-10-09 Lunge Lauf- und Sportschuhe GmbH, 22305 Hamburg Shoe insert
BR9805490C1 (en) * 1998-11-23 2004-08-10 Boxflex Texton Componentes Par Improvement in coextruded thermoplastic structural material for footwear
IT1310325B1 (en) * 1999-01-22 2002-02-13 Testoni A Spa METHOD FOR THE REALIZATION OF FOOTWEAR AND FOOTWEAR SO REALIZED.
ES2207610T3 (en) * 2000-03-28 2004-06-01 Helmut Mayer PALMILLA DE CALZADO AND USING THE SAME FOR THE MANUFACTURE OF A FOOTWEAR.
AUPQ837800A0 (en) * 2000-06-23 2000-07-20 5Th Floor Pty Ltd Flexible orthotic device
FR2843856B1 (en) * 2002-09-02 2005-03-04 Rossignol Sa INSOLE FOR SPORT SHOES
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IT201900014082A1 (en) * 2019-08-05 2021-02-05 Selle Royal Spa SPORTS FOOTWEAR, IN PARTICULAR CYCLING FOOTWEAR
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Also Published As

Publication number Publication date
DE69102951D1 (en) 1994-08-25
FR2658397A1 (en) 1991-08-23
JPH04503626A (en) 1992-07-02
EP0469138B1 (en) 1994-07-20
CA2050299C (en) 1997-07-01
JPH0698053B2 (en) 1994-12-07
DE69102951T2 (en) 1994-11-03
WO1991012740A1 (en) 1991-09-05
ATE108622T1 (en) 1994-08-15
FR2658397B1 (en) 1994-09-23

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