EP1247468A1 - Walking shoe with removable upper reinforcement and reinforcement for such a shoe - Google Patents

Walking shoe with removable upper reinforcement and reinforcement for such a shoe Download PDF

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Publication number
EP1247468A1
EP1247468A1 EP02004841A EP02004841A EP1247468A1 EP 1247468 A1 EP1247468 A1 EP 1247468A1 EP 02004841 A EP02004841 A EP 02004841A EP 02004841 A EP02004841 A EP 02004841A EP 1247468 A1 EP1247468 A1 EP 1247468A1
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EP
European Patent Office
Prior art keywords
tongue
reinforcement
shoe
branches
shoe according
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.)
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Application number
EP02004841A
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German (de)
French (fr)
Inventor
Yves Farys
Alois Badegruber
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Salomon SAS
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Salomon SAS
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Publication of EP1247468A1 publication Critical patent/EP1247468A1/en
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    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00—Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/26—Tongues for shoes

Definitions

  • the invention is intended for walking shoes, and more particularly for shoes Mountaineering.
  • walking shoes and in particular mountaineering shoes, have a sole on which is mounted a relatively high rod, that is to say a rod which extends above the user's ankle.
  • a relatively high rod that is to say a rod which extends above the user's ankle.
  • the upper of such shoes is most often made of thick textile or leather. so as to ensure a fairly good rigidity, therefore a good hold of the foot.
  • the user is brought to meet various terrains. So during the approach, the mountaineer most often walks on terrain that does not present major difficulties for progression, especially paths or trails where the risk of slipping or getting hurt are weak. To progress in these relatively easy terrains, it is advantageous that the shoes have a certain flexibility to allow good clearance the ankle joint and ensure good walking comfort.
  • the need for a very good hold of the foot is then preponderant. Indeed, in this type of ground, the foot is often only supported on the ground by a part of the sole, often because that the bearing surfaces offered by the ground are very small. It is therefore essential that the foot is well held so that the walker is not destabilized, even if he rests on the ground by an eccentric part of the sole.
  • the ideal shoe should then have a good rigidity, including at the ankle joint.
  • cleat plates are preferably used with shoes with rigid soles, i.e. soles that do not bend practically not under the weight of the user.
  • Such cleat plates allow especially to progress on very stiff icy walls, even almost vertical during the progression in ice cascades where, in climb, the user does not lean on the wall only by front studs which protrude from the front of the shoe, almost horizontally. In this situation, the weight of the user is exerted at the rear of the shoe, directly above the heel, while the sole support of the shoe on the wall is at the front end of the shoe.
  • the object of the invention is therefore to propose a walking shoe with a high upper or a mountaineering boot that allows you to progress in the best conditions on the different types of terrain that can be encountered during the same mountain race.
  • the invention provides a walking shoe with a high upper, of the type comprising a tongue composed of two corresponding lower and upper portions respectively at the instep and at the bottom of the leg of a user wearing the shoe, characterized in that the tongue comprises means for attaching a tongue reinforcement which extends along at least part of the two portions of the tongue to increase the rigidity thereof.
  • FIG. 1 Illustrated in Figures 1 and 2 a walking shoe 10 with a particularly tall upper adapted to mountaineering, and even more particularly adapted to the cascade progression of ice cream.
  • the shoe has a sole 12 which is surmounted by a rod 14 in which one will distinguish a lower part 16, below the ankle area, and a high part 18 which extends around and above the ankle.
  • the shoe also has a tongue 20 which extends under the upper 14, below the lacing 22 allowing the footwear volume to be adapted the shoe at the foot of the user.
  • the tongue 20 thus comprises a lower part 24 which extends from the front to the rear of the shoe, in a substantially inclined direction upwards and backwards along the lower part 16 of the rod 14, and which is intended to come to bear essentially on the instep of the user.
  • the tongue 20 comprises another upper part 26 which extends the lower part 24 vertically upwards along the upper part 18 of the rod 14 and which is intended to bear against the front of the lower leg of the user, i.e. against the bottom of the tibia.
  • the tongue 20 is a soft padded tongue.
  • the upper 14 of the shoe is made with materials with a certain flexibility such as fabrics, leather, non-woven synthetic materials (PVC), possibly by combining several of these materials. It may also include, for example at the heel or toes, stiffer reinforcements, for example plastic or composite material.
  • this rod 14 cannot be assimilated to a rigid shell.
  • the sole 12 is a rigid sole, that is to say a sole which does not deform, or very little, under the effect of user weight.
  • the sole 12 comprises, at front and rear, grooves 30, 32 for fixing a studded plate 31 allowing progression in icy terrain and even allowing the climbing of ice waterfalls.
  • the upper part 18 and the lower part 16 of the rod 14 are separated by an intermediate zone 28 which is relatively more flexible than the upper and lower parts.
  • the shoe is allowed to present a greater flexibility around the ankle compared to a conventional upper construction high in which the two parts are arranged in continuity with each other.
  • this greater flexibility manifests itself as well in the direction of bending around an axis longitudinal only in the direction of bending around a transverse axis to allow support in multiple orientations.
  • the tongue 20 comprises means attachment of a removable tongue reinforcement 34 which is intended to reinforce the rigidity of the tongue 20 in flexion around a transverse axis corresponding substantially to the axis main ankle joint.
  • this reinforcement 34 is in the form of a bracket comprising a lower branch 36 and an upper branch 38 intended for extend respectively against the lower part 24 and the upper part 26 of the tongue 20.
  • these two branches 36, 38 form between them an angle substantially equivalent to that formed between the lower and upper parts of the tongue 20.
  • each of the two branches 36, 38 has, in section transverse, a curved profile so as to match the profile of either the instep or the tibia.
  • the lower branch 36 of the reinforcement 34 has, starting from the zone junction 40 of the two branches, a transverse width which tends to decrease as and as we progress towards the front end of the lower branch 36.
  • the transverse width of the branch upper tends to increase as one progresses towards the upper end of branch 38.
  • the lateral edges of each of the branches 36, 38 respectively are flexible enough not to risk creating hard spots that could cause lack of comfort or even an injury.
  • the side edges of the branches 36, 38 are formed by softened wings 42, 44 which have a thickness reduced compared to the thickness of a central portion 46, 48 of the branches 36, 38.
  • the central portion 46, 48 of the branches 36, 38 is intended to give the reinforcement 34 a certain resistance to bending, in particular to bending around a transverse axis parallel to the junction area 40 of the two branches.
  • the curved profile of branches 36, 38 and the junction zone 40 reinforces the stiffness in bending of the reinforcement.
  • the junction zone 40 has, in the example illustrated, three transverse grooves 50. These grooves 50 make the junction area 40 a preferred bending area which allows good control the bending deformation of the reinforcement
  • the reinforcement 34 is intended to be fixed on the outer face of the tongue 20 by the free ends of its lower 36 and upper 38 branches.
  • the tongue 20 has two gussets 52, 54 blind sewn on the outer face of the tongue 20.
  • the upper gusset 54 is produced under the shape of a flexible strip having substantially the same transverse width as the upper end of the upper part 26 of the tongue 20 and a height of the order of 2 to 4 centimeters.
  • the edges of the strip 54 are sewn on the tongue, except for its lower transverse edge 56 so as to form a blind gusset open downwards.
  • the lower gusset 52 is produced in the form of a strip sewn by its edges, except for the rear edge 58, on the lower part 24 of the tongue 20, to form a blind gusset open towards the rear.
  • the lower gusset 52 is not arranged at the front end of the tongue 20, but substantially in the middle of the lower part 24 thereof. This zone corresponds substantially to the front of the instep of the user wearing the shoe.
  • the position of the gussets 52, 54 is such that the developed length of the tongue between the bottom of the two gussets is substantially equal to the developed length of the reinforcement 34.
  • the shoe according to the invention can be used without reinforcement. It therefore has maximum flexibility which provides it with good comfort, by example for performing an approach walk.
  • the rigidity of the tongue 22, and therefore of the upper part of the upper of the shoe, is is therefore increased. Indeed, when the user flexes his leg forward relative to at the foot, the bottom of his shin comes to rest on the upper part of the tongue, therefore, indirectly, on the upper branch 38 of the reinforcement 34 which is biased forward. However, the lower branch 36 of the reinforcement is then supported on the instep of the user, with the interposition of the lower part of the tongue of course. So the two branches are bent towards one another but the stiffness of the reinforcement 34 is opposed to this flexing movement of the ankle.
  • transverse grooves 50 Thanks to the presence of transverse grooves 50, the bending of the reinforcement is concentrated in the predetermined junction area 40 which is located opposite the flexion zone of the user's foot, so that the reinforcement 34, even flexed, does not risk creating overpressure on the foot of the user.
  • the reinforcement is interposed between the lacing 22 and the foot of the user so that it also plays a role in distributing the pressure generated by the the cage.
  • the geometry of the reinforcement 34, and in particular the curved nature of the branches 36, 38, allows to increase the overall resistance of the reinforcement to bending, without the branches being too rigid. These therefore retain an ability to locally conform to the morphology of the foot during lacing, in particular at the level of the softened lateral wings 42, 44. Similarly, the overall stiffness of the reinforcement attached to the rod is increased by the fact that the ends of its branches 36, 38 are blocked longitudinally at the bottom of the corresponding gusset 52, 54. In effect, when the reinforcement bends forward, a bracing effect occurs opposes this bending.
  • the overall stiffness of the shoe will depend on the stiffness of the upper and that reinforcement.
  • the same pair of shoes could possibly be delivered with several reinforcements of different stiffness.
  • the reinforcement 34 may be made of plastic, for example by molding by injection or compression molding. It can thus be made of material thermoplastic, possibly loaded with mineral fibers such as glass fibers. For get a more rigid reinforcement, we can choose to make it with a composite material comprising sheets of glass fibers, aramid or carbon, woven or not, impregnated with a thermosetting resin, for example an epoxy resin.

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  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Abstract

The walking boot has a removable reinforcement (34) which fits over the tongue (20). This is held in place by gussets (52). An Independent claim is included for the reinforcement.

Description

L'invention est destinée aux chaussures de marche, et plus particulièrement aux chaussures d'alpinisme.The invention is intended for walking shoes, and more particularly for shoes Mountaineering.

De manière connue les chaussures de marche, et notamment d'alpinisme, comportent une semelle sur laquelle est montée une tige relativement haute, c'est-à-dire une tige qui s'étend au-dessus de la cheville de l'utilisateur. L'intérêt des chaussures à tige haute réside notamment dans une bonne tenue du pied et dans une bonne protection de la cheville.In known manner, walking shoes, and in particular mountaineering shoes, have a sole on which is mounted a relatively high rod, that is to say a rod which extends above the user's ankle. The advantage of high-toe shoes is especially in good foot hold and good ankle protection.

La tige de telles chaussures est le plus souvent réalisée en textile épais ou en cuir de manière à assurer une assez bonne rigidité, donc une bonne tenue du pied.The upper of such shoes is most often made of thick textile or leather. so as to ensure a fairly good rigidity, therefore a good hold of the foot.

Cependant, au cours d'une marche, notamment au cours de l'ascension d'une montagne, l'utilisateur est amené à rencontrer des terrains variés. Ainsi, au cours de l'approche, l'alpiniste marche le plus souvent sur des terrains qui ne présentent pas de difficultés majeures pour la progression, notamment des chemins ou des sentiers où les risques de glisser ou de se blesser sont faibles. Pour progresser dans ces terrains relativement faciles, il est avantageux que les chaussures présentent une certaine flexibilité pour permettre un bon débattement de l'articulation de la cheville et assurer un bon confort de marche.However, during a walk, especially during the ascent of a mountain, the user is brought to meet various terrains. So during the approach, the mountaineer most often walks on terrain that does not present major difficulties for progression, especially paths or trails where the risk of slipping or getting hurt are weak. To progress in these relatively easy terrains, it is advantageous that the shoes have a certain flexibility to allow good clearance the ankle joint and ensure good walking comfort.

Lorsque le terrain se fait plus accidenté, par exemple lors de la progression en rochers, le besoin d'une très bonne tenue du pied se fait alors prépondérant. En effet, dans ce type de terrain, le pied n'est souvent en appui sur le sol que par une partie de la semelle, souvent parce que les surfaces d'appui offertes par le terrain sont de très petite taille. Il est alors essentiel que le pied soit bien tenu pour que le marcheur ne soit pas déstabilisé, même s'il prend appui sur le sol par une partie excentrée de la semelle. La chaussure idéale doit alors présenter une bonne rigidité, y compris au niveau de l'articulation de la cheville.When the ground becomes more uneven, for example during the progression in rocks, the need for a very good hold of the foot is then preponderant. Indeed, in this type of ground, the foot is often only supported on the ground by a part of the sole, often because that the bearing surfaces offered by the ground are very small. It is therefore essential that the foot is well held so that the walker is not destabilized, even if he rests on the ground by an eccentric part of the sole. The ideal shoe should then have a good rigidity, including at the ankle joint.

Enfin, notamment lors de la pratique de l'alpinisme, il arrive que l'utilisateur doive fixer, sous ses semelles, des plaques à crampons à glace. Ces plaques à crampons sont de préférence utilisées avec des chaussures à semelles rigides, c'est-à-dire des semelles qui ne se courbent pratiquement pas sous le poids de l'utilisateur. De telles plaques à crampons permettent notamment de progresser sur des parois verglacées très raides, voire même quasi-verticales lors de la progression en cascades de glace où, en montée, l'utilisateur ne s'appuie sur la paroi que par des crampons avant qui font saillie à l'avant de la chaussure, presque horizontalement. Dans cette situation, le poids de l'utilisateur s'exerce à l'arrière de la chaussure, à l'aplomb du talon, tandis que le seul appui de la chaussure sur la paroi se fait à l'extrémité avant de la chaussure. Il y a donc un grand porte-à-faux entre le poids et l'appui, que l'utilisateur doit compenser par l'action musculaire du mollet notamment. On comprend qu'il est alors intéressant que la chaussure soit relativement rigide au niveau de la cheville pour qu'une partie des efforts de flexion soit répartie au niveau du reste du pied, la chaussure formant une sorte d'équerre. Finally, especially when practicing mountaineering, it sometimes happens that the user has to fix, under his soles, ice cleats. These cleat plates are preferably used with shoes with rigid soles, i.e. soles that do not bend practically not under the weight of the user. Such cleat plates allow especially to progress on very stiff icy walls, even almost vertical during the progression in ice cascades where, in climb, the user does not lean on the wall only by front studs which protrude from the front of the shoe, almost horizontally. In this situation, the weight of the user is exerted at the rear of the shoe, directly above the heel, while the sole support of the shoe on the wall is at the front end of the shoe. There is therefore a large overhang between the weight and the support, which the user must compensate by the muscular action of the calf in particular. We understand that it is then interesting that the shoe is relatively rigid at the ankle so that a part of the bending forces is distributed at the level of the rest of the foot, the shoe forming a sort of square.

L'invention a donc pour but de proposer une chaussure de marche à tige haute ou une chaussure d'alpinisme qui permette de progresser dans les meilleures conditions sur les différents types de terrains que l'on peut rencontrer au cours d'une même course en montagne.The object of the invention is therefore to propose a walking shoe with a high upper or a mountaineering boot that allows you to progress in the best conditions on the different types of terrain that can be encountered during the same mountain race.

Dans ce but, l'invention propose une chaussure de marche à tige haute, du type comportant une languette composée de deux portions inférieure et supérieure correspondant respectivement au cou-de-pied et au bas de la jambe d'un utilisateur portant la chaussure, caractérisée en ce que la languette comporte des moyens d'attache d'un renfort de languette qui s'étend le long d'une partie au moins des deux portions de la languette pour augmenter la rigidité de celle-ci.To this end, the invention provides a walking shoe with a high upper, of the type comprising a tongue composed of two corresponding lower and upper portions respectively at the instep and at the bottom of the leg of a user wearing the shoe, characterized in that the tongue comprises means for attaching a tongue reinforcement which extends along at least part of the two portions of the tongue to increase the rigidity thereof.

D'autres caractéristiques et avantages de l'invention apparaítront à la lecture de la description détaillée qui suit et qui sera mieux comprise en se reportant aux dessins annexés dans lesquels :

  • la figure 1 est une vue en perspective d'une chaussure selon l'invention dans laquelle le renfort de languette est illustré avant son attache sur la languette ;
  • la figure 2 est une vue similaire à celle de la figure 1 dans laquelle le renfort est illustré attaché sur la languette ;
  • la figure 3 est une vue de détail en coupe longitudinale de la languette munie de son renfort ;
  • la figure 4 est une vue schématique illustrant l'utilisation d'une chaussure selon l'invention, munie d'une plaque à crampons rapportée, lors d'une progression en cascade de glace ;
  • les figures 5 et 6 sont des vues en section transversale du renfort selon les lignes 5-5 et 6-6 de la figure 1.
Other characteristics and advantages of the invention will appear on reading the detailed description which follows and which will be better understood by referring to the appended drawings in which:
  • Figure 1 is a perspective view of a shoe according to the invention in which the tongue reinforcement is illustrated before its attachment to the tongue;
  • Figure 2 is a view similar to that of Figure 1 in which the reinforcement is illustrated attached to the tongue;
  • Figure 3 is a detail view in longitudinal section of the tongue provided with its reinforcement;
  • Figure 4 is a schematic view illustrating the use of a shoe according to the invention, provided with an attached studded plate, during a progression in ice cascade;
  • Figures 5 and 6 are cross-sectional views of the reinforcement along lines 5-5 and 6-6 of Figure 1.

On a illustré sur les figures 1 et 2 une chaussure de marche 10 à tige haute particulièrement adaptée à l'alpinisme, et encore plus particulièrement adaptée à la progression en cascade de glace.Illustrated in Figures 1 and 2 a walking shoe 10 with a particularly tall upper adapted to mountaineering, and even more particularly adapted to the cascade progression of ice cream.

La chaussure comporte une semelle 12 qui est surmontée d'une tige 14 dans laquelle on distinguera une partie basse 16, en dessous de la zone de la cheville, et une partie haute 18 qui s'étend autour et au-dessus de la cheville. La chaussure comporte aussi une languette 20 qui s'étend sous la tige 14, en dessous du laçage 22 permettant d'adapter le volume chaussant de la chaussure au pied de l'utilisateur. La languette 20 comporte ainsi une partie inférieure 24 qui s'étend de l'avant vers l'arrière de la chaussure, selon une direction sensiblement inclinée vers le haut et vers l'arrière le long de la partie basse 16 de la tige 14, et qui est destinée à venir en appui essentiellement sur le cou-de-pied de l'utilisateur. La languette 20 comporte encore une partie supérieure 26 qui prolonge la partie inférieure 24 verticalement vers le haut le long de la partie haute 18 de la tige 14 et qui est destinée à venir en appui contre l'avant du bas de la jambe de l'utilisateur, c'est-à-dire contre le bas du tibia. Comme on peut le voir sur la figure 3, la languette 20 est une languette souple rembourrée. La tige 14 de la chaussure est réalisée avec des matériaux présentant une certaine souplesse tels que les tissus, le cuir, les matières synthétiques non tissées (PVC), éventuellement en combinant plusieurs de ces matériaux. Elle pourra aussi comporter, par exemple au niveau du talon ou des orteils, des renforts plus rigides, par exemple en matière plastique ou en matériau composite. Toutefois, cette tige 14 ne pourra pas être assimilée à une coque rigide.The shoe has a sole 12 which is surmounted by a rod 14 in which one will distinguish a lower part 16, below the ankle area, and a high part 18 which extends around and above the ankle. The shoe also has a tongue 20 which extends under the upper 14, below the lacing 22 allowing the footwear volume to be adapted the shoe at the foot of the user. The tongue 20 thus comprises a lower part 24 which extends from the front to the rear of the shoe, in a substantially inclined direction upwards and backwards along the lower part 16 of the rod 14, and which is intended to come to bear essentially on the instep of the user. The tongue 20 comprises another upper part 26 which extends the lower part 24 vertically upwards along the upper part 18 of the rod 14 and which is intended to bear against the front of the lower leg of the user, i.e. against the bottom of the tibia. As we can see on Figure 3, the tongue 20 is a soft padded tongue. The upper 14 of the shoe is made with materials with a certain flexibility such as fabrics, leather, non-woven synthetic materials (PVC), possibly by combining several of these materials. It may also include, for example at the heel or toes, stiffer reinforcements, for example plastic or composite material. However, this rod 14 cannot be assimilated to a rigid shell.

Au contraire, dans l'exemple de réalisation illustré sur les figures, la semelle 12 est une semelle rigide, c'est-à-dire une semelle qui ne se déforme pas, ou très peu, sous l'effet du poids de l'utilisateur. De plus, comme on peut le voir à la figure 4, la semelle 12 comporte, à l'avant et à l'arrière, des gorges 30, 32 pour la fixation d'une plaque à crampons 31 permettant la progression en terrain verglacé et permettant même l'escalade de cascades de glace.On the contrary, in the embodiment illustrated in the figures, the sole 12 is a rigid sole, that is to say a sole which does not deform, or very little, under the effect of user weight. In addition, as can be seen in Figure 4, the sole 12 comprises, at front and rear, grooves 30, 32 for fixing a studded plate 31 allowing progression in icy terrain and even allowing the climbing of ice waterfalls.

Dans l'exemple de chaussure illustré, on peut voir que la partie haute 18 et la partie basse 16 de la tige 14 sont séparées par une zone intermédiaire 28 qui est relativement plus souple que les parties haute et basse. Par cette construction, on permet à la chaussure de présenter une plus grande flexibilité autour de la cheville par rapport à une construction classique de tige haute dans laquelle les deux parties sont agencées dans la continuité l'une de l'autre. Dans l'exemple illustré, plus particulièrement optimisé pour la progression en cascades de glace, cette plus grande souplesse se manifeste aussi bien dans le sens d'une flexion autour d'un axe longitudinal que dans le sens d'une flexion autour d'un axe transversal pour autoriser des prises d'appui dans de multiples orientations. Toutefois, dans le cadre d'une chaussure d'alpinisme plus particulièrement optimisée pour la progression en rochers et en pentes verglacées, on pourra prévoir de conserver un maximum de rigidité en flexion de la cheville autour d'un axe longitudinal et de donner une plus grande souplesse en flexion autour d'un axe transversal pour faciliter la progression en marche d'approche.In the example of shoe illustrated, it can be seen that the upper part 18 and the lower part 16 of the rod 14 are separated by an intermediate zone 28 which is relatively more flexible than the upper and lower parts. By this construction, the shoe is allowed to present a greater flexibility around the ankle compared to a conventional upper construction high in which the two parts are arranged in continuity with each other. In the illustrated example, more particularly optimized for the progression in ice cascades, this greater flexibility manifests itself as well in the direction of bending around an axis longitudinal only in the direction of bending around a transverse axis to allow support in multiple orientations. However, as part of a shoe mountaineering more particularly optimized for the progression in rocks and slopes icy, we can plan to keep a maximum of flexural rigidity of the ankle around a longitudinal axis and give more flexibility in bending around a transverse axis to facilitate progression in approach.

Conformément aux enseignements de l'invention, la languette 20 comporte des moyens d'attache d'un renfort de languette amovible 34 qui est destiné à renforcer la rigidité de la languette 20 en flexion autour d'un axe transversal correspondant sensiblement à l'axe principal d'articulation de la cheville.In accordance with the teachings of the invention, the tongue 20 comprises means attachment of a removable tongue reinforcement 34 which is intended to reinforce the rigidity of the tongue 20 in flexion around a transverse axis corresponding substantially to the axis main ankle joint.

Comme on peut le voir sur les figures, ce renfort 34 se présente sous la forme d'une équerre comportant une branche inférieure 36 et une branche supérieure 38 destinées à s'étendre respectivement contre la partie inférieure 24 et la partie supérieure 26 de la languette 20. A l'état libre, ces deux branches 36, 38 forment entre elles un angle sensiblement équivalent à celui formé entre les parties inférieure et supérieure de la languette 20.As can be seen in the figures, this reinforcement 34 is in the form of a bracket comprising a lower branch 36 and an upper branch 38 intended for extend respectively against the lower part 24 and the upper part 26 of the tongue 20. In the free state, these two branches 36, 38 form between them an angle substantially equivalent to that formed between the lower and upper parts of the tongue 20.

Tel qu'illustré aux figures 5 et 6, chacune des deux branches 36, 38 présente, en section transversale, un profil courbe de manière à épouser le profil soit du cou-de-pied soit du tibia.As illustrated in FIGS. 5 and 6, each of the two branches 36, 38 has, in section transverse, a curved profile so as to match the profile of either the instep or the tibia.

Plus particulièrement, la branche inférieure 36 du renfort 34 présente, en partant de la zone de jonction 40 des deux branches, une largeur transversale qui tend à décroítre au fur et à mesure que l'on progresse vers l'extrémité avant de la branche inférieure 36.More particularly, the lower branch 36 of the reinforcement 34 has, starting from the zone junction 40 of the two branches, a transverse width which tends to decrease as and as we progress towards the front end of the lower branch 36.

Au contraire, en partant de la zone de jonction 40, la largeur transversale de la branche supérieure tend à augmenter au fur et à mesure que l'on progresse vers l'extrémité supérieure de la branche 38. On the contrary, starting from the junction zone 40, the transverse width of the branch upper tends to increase as one progresses towards the upper end of branch 38.

De préférence, les bords latéraux de chacune des branches respectivement 36, 38 sont suffisamment souples pour ne pas risquer de créer des points durs susceptibles d'entraíner un manque de confort, voire même une blessure. Dans cet exemple, les bords latéraux des branches 36, 38 sont formés par des ailes assouplies 42, 44 qui présentent une épaisseur réduite par rapport à l'épaisseur d'une portion centrale 46, 48 des branches 36, 38.Preferably, the lateral edges of each of the branches 36, 38 respectively are flexible enough not to risk creating hard spots that could cause lack of comfort or even an injury. In this example, the side edges of the branches 36, 38 are formed by softened wings 42, 44 which have a thickness reduced compared to the thickness of a central portion 46, 48 of the branches 36, 38.

En effet, la portion centrale 46, 48 des branches 36, 38 est destinée à conférer au renfort 34 une certaine résistance à la flexion, notamment à la flexion autour d'un axe transversal parallèle à la zone de jonction 40 des deux branches. On notera que le profil courbe des branches 36, 38 et de la zone de jonction 40 renforce la raideur à la flexion du renfort.Indeed, the central portion 46, 48 of the branches 36, 38 is intended to give the reinforcement 34 a certain resistance to bending, in particular to bending around a transverse axis parallel to the junction area 40 of the two branches. Note that the curved profile of branches 36, 38 and the junction zone 40 reinforces the stiffness in bending of the reinforcement.

La zone de jonction 40 présente dans l'exemple illustré trois rainures transversales 50. Ces rainures 50 font de la zone de jonction 40 une zone privilégiée de flexion qui permet de bien maítriser la déformation en flexion du renfortThe junction zone 40 has, in the example illustrated, three transverse grooves 50. These grooves 50 make the junction area 40 a preferred bending area which allows good control the bending deformation of the reinforcement

En effet, le renfort 34 est destiné à être fixé sur la face extérieure de la languette 20 par les extrémités libres de ses branches inférieure 36 et supérieure 38.Indeed, the reinforcement 34 is intended to be fixed on the outer face of the tongue 20 by the free ends of its lower 36 and upper 38 branches.

Pour ce faire, on peut voir que la languette 20 comporte deux goussets 52, 54 borgnes cousus sur la face extérieure de la languette 20. Le gousset supérieur 54 est réalisé sous la forme d'un bandeau souple présentant sensiblement la même largeur transversale que l'extrémité supérieure de la partie supérieure 26 de la languette 20 et une hauteur de l'ordre de 2 à 4 centimètres. Les bords du bandeau 54 sont cousus sur la languette, à l'exception de son bord transversal inférieur 56 de manière à former un gousset borgne ouvert vers le bas.To do this, we can see that the tongue 20 has two gussets 52, 54 blind sewn on the outer face of the tongue 20. The upper gusset 54 is produced under the shape of a flexible strip having substantially the same transverse width as the upper end of the upper part 26 of the tongue 20 and a height of the order of 2 to 4 centimeters. The edges of the strip 54 are sewn on the tongue, except for its lower transverse edge 56 so as to form a blind gusset open downwards.

De manière comparable, le gousset inférieur 52 est réalisé sous la forme d'un bandeau cousu par ses bords, à l'exception du bord arrière 58, sur la partie inférieure 24 de la languette 20, pour former un gousset borgne ouvert vers l'arrière. Toutefois, le gousset inférieur 52 n'est pas agencé à l'extrémité avant de la languette 20, mais sensiblement au milieu de la partie inférieure 24 de celle-ci. Cette zone correspond sensiblement à l'avant du cou-de-pied de l'utilisateur qui porte la chaussure.Similarly, the lower gusset 52 is produced in the form of a strip sewn by its edges, except for the rear edge 58, on the lower part 24 of the tongue 20, to form a blind gusset open towards the rear. However, the lower gusset 52 is not arranged at the front end of the tongue 20, but substantially in the middle of the lower part 24 thereof. This zone corresponds substantially to the front of the instep of the user wearing the shoe.

La position des goussets 52, 54 est telle que la longueur développée de la languette entre le fond des deux goussets est sensiblement égale à la longueur développée du renfort 34.The position of the gussets 52, 54 is such that the developed length of the tongue between the bottom of the two gussets is substantially equal to the developed length of the reinforcement 34.

Comme on peut le voir sur la figure 1, la chaussure selon l'invention peut être utilisée sans le renfort. Elle présente alors une souplesse maximale qui lui assure un bon confort, par exemple pour effectuer une marche d'approche.As can be seen in Figure 1, the shoe according to the invention can be used without reinforcement. It therefore has maximum flexibility which provides it with good comfort, by example for performing an approach walk.

Lorsque l'utilisateur souhaite disposer d'une chaussure plus rigide, il lui suffit d'enfiler les extrémités libres des branches 36, 38 du renfort 34 dans les goussets 52, 54 correspondants. Il lui faut bien sûr pour cela déformer la languette et/ou le renfort. Une fois installé, le renfort est calé transversalement et il est bloqué longitudinalement sur la languette à ses deux extrémités.When the user wishes to have a more rigid shoe, it suffices to put on the free ends of the branches 36, 38 of the reinforcement 34 in the corresponding gussets 52, 54. he it must of course deform the tongue and / or the reinforcement. Once installed, the reinforcement is wedged transversely and it is locked longitudinally on the tongue at its two ends.

La rigidité de la languette 22, et donc de la partie supérieure de la tige de la chaussure, se trouve donc augmentée. En effet, lorsque l'utilisateur fléchit sa jambe vers l'avant par rapport au pied, le bas de son tibia vient en appui sur la partie supérieure de la languette, donc, indirectement, sur la branche supérieure 38 du renfort 34 qui se trouve sollicitée vers l'avant. Or, la branche inférieure 36 du renfort se trouve alors en appui sur le cou-de-pied de l'utilisateur, avec interposition de la partie basse de la languette bien entendu. Ainsi, les deux branches sont sollicitées en flexion l'une vers l'autre mais la raideur du renfort 34 s'oppose à ce mouvement de fléchissement de la cheville. Grâce à la présence des rainures transversales 50, la flexion du renfort se trouve concentrée dans la zone prédéterminée de jonction 40 qui se trouve en regard de la zone de flexion du pied de l'utilisateur, de sorte que le renfort 34, même fléchi, ne risque pas de créer de surpression sur le pied de l'utilisateur.The rigidity of the tongue 22, and therefore of the upper part of the upper of the shoe, is is therefore increased. Indeed, when the user flexes his leg forward relative to at the foot, the bottom of his shin comes to rest on the upper part of the tongue, therefore, indirectly, on the upper branch 38 of the reinforcement 34 which is biased forward. However, the lower branch 36 of the reinforcement is then supported on the instep of the user, with the interposition of the lower part of the tongue of course. So the two branches are bent towards one another but the stiffness of the reinforcement 34 is opposed to this flexing movement of the ankle. Thanks to the presence of transverse grooves 50, the bending of the reinforcement is concentrated in the predetermined junction area 40 which is located opposite the flexion zone of the user's foot, so that the reinforcement 34, even flexed, does not risk creating overpressure on the foot of the user.

A ce sujet, on remarquera que le renfort se trouve intercalé entre le laçage 22 et le pied de l'utilisateur de sorte qu'il joue aussi un rôle de répartition de la pression engendrée par le laçage.In this regard, it will be noted that the reinforcement is interposed between the lacing 22 and the foot of the user so that it also plays a role in distributing the pressure generated by the the cage.

La géométrie du renfort 34, et notamment le caractère incurvé des branches 36, 38, permet d'augmenter la résistance globale du renfort à la flexion, sans que les branches ne soient trop rigides. Celles-ci conservent donc une capacité de se conformer localement à la morphologie du pied lors du laçage, notamment au niveau des ailes latérales assouplies 42, 44. De même, la raideur globale du renfort attaché sur la tige est augmentée par le fait que les extrémités de ses branches 36, 38 sont bloquées longitudinalement au fond du gousset 52, 54 correspondant. En effet, il se produit, lors de la flexion du renfort vers l'avant, un effet d'arc-boutement qui s'oppose à cette flexion.The geometry of the reinforcement 34, and in particular the curved nature of the branches 36, 38, allows to increase the overall resistance of the reinforcement to bending, without the branches being too rigid. These therefore retain an ability to locally conform to the morphology of the foot during lacing, in particular at the level of the softened lateral wings 42, 44. Similarly, the overall stiffness of the reinforcement attached to the rod is increased by the fact that the ends of its branches 36, 38 are blocked longitudinally at the bottom of the corresponding gusset 52, 54. In effect, when the reinforcement bends forward, a bracing effect occurs opposes this bending.

Bien entendu, la rigidité globale de la chaussure dépendra de la rigidité de la tige et de celle du renfort. Une même paire de chaussures pourra éventuellement être livrée avec plusieurs renforts de raideurs différentes.Of course, the overall stiffness of the shoe will depend on the stiffness of the upper and that reinforcement. The same pair of shoes could possibly be delivered with several reinforcements of different stiffness.

Le renfort 34 pourra être réalisé en matière plastique, par exemple par moulage par injection ou par moulage par compression. Il pourra ainsi être réalisé en matériau thermoplastique, éventuellement chargé en fibres minérales telles que des fibres de verre. Pour obtenir un renfort plus rigide, on pourra choisir de le réaliser avec un matériau composite comportant des nappes de fibres de verre, d'aramide ou de carbone, tissées ou non, imprégnées d'une résine thermodurcissable, par exemple une résine époxy.The reinforcement 34 may be made of plastic, for example by molding by injection or compression molding. It can thus be made of material thermoplastic, possibly loaded with mineral fibers such as glass fibers. For get a more rigid reinforcement, we can choose to make it with a composite material comprising sheets of glass fibers, aramid or carbon, woven or not, impregnated with a thermosetting resin, for example an epoxy resin.

Claims (17)

Chaussure de marche à tige haute, du type comportant une languette (20) composée de deux portions inférieure (24) et supérieure (26) correspondant respectivement au cou-de-pied et au bas de la jambe d'un utilisateur portant la chaussure, caractérisée en ce que la languette (20) comporte des moyens d'attache (52, 54) d'un renfort (34) de languette amovible qui s'étend le long d'une partie au moins des deux portions (24, 26) de la languette (20) pour augmenter la rigidité de celle-ci.Walking shoe with high upper, of the type comprising a tongue (20) composed of two lower (24) and upper (26) portions corresponding respectively to the instep and to the bottom of the leg of a user wearing the shoe, characterized in that the tongue (20) comprises means of attachment (52, 54) of a reinforcement (34) of removable tongue which extends along at least part of the two portions (24, 26) of the tongue (20) to increase the rigidity thereof. Chaussure selon la revendication 1, caractérisée en ce que le renfort de languette (34) se présente sous la forme d'une équerre dont chacune des deux branches (36, 38) s'étend le long d'une des portions (24, 26) de la languette (20).Shoe according to claim 1, characterized in that the tongue reinforcement (34) is in the form of a square, each of the two branches (36, 38) of which extends along one of the portions (24, 26 ) of the tongue (20). Chaussure selon la revendication 2, caractérisée en ce que le renfort de languette (34) est attaché sur la languette (20) au niveau des extrémités libre de chacune de ses branches (36, 38).Shoe according to claim 2, characterized in that the tongue reinforcement (34) is attached to the tongue (20) at the free ends of each of its branches (36, 38). Chaussure selon l'une des revendications 2 ou 3, caractérisée en ce que le renfort de languette (34) comporte, au niveau de la jonction (40) de ses deux branches (36, 38), une zone privilégiée de flexion autour d'un axe transversal.Shoe according to one of claims 2 or 3, characterized in that the tongue reinforcement (34) comprises, at the junction (40) of its two branches (36, 38), a privileged zone of flexion around a transverse axis. Chaussure selon l'une quelconque des revendications 2 à 4, caractérisée en ce que le renfort de languette (34) comporte, sur l'une au moins de ses deux branches (36, 38), des ailes latérales assouplies (42, 44).Shoe according to any one of claims 2 to 4, characterized in that the tongue reinforcement (34) comprises, on at least one of its two branches (36, 38), softened lateral wings (42, 44) . Chaussure selon l'une quelconque des revendications 3 à 5, caractérisée en ce que les moyens d'attache du renfort (34) sur la languette (20) sont constitués de deux goussets (52, 54) dans lesquels sont enfilées les deux extrémités libres des branches (36, 38) du renfort (34).Shoe according to any one of claims 3 to 5, characterized in that the means of attachment of the reinforcement (34) on the tongue (20) consist of two gussets (52, 54) in which the two free ends are threaded branches (36, 38) of the reinforcement (34). Chaussure selon la revendication 6, caractérisée en ce que les extrémités libres des branches (36, 38) du renfort (34) sont reçues chacune au fond du gousset (52, 54) correspondant de la languette (20).Shoe according to claim 6, characterized in that the free ends of the branches (36, 38) of the reinforcement (34) are each received at the bottom of the gusset (52, 54) corresponding to the tongue (20). Chaussure selon l'une quelconque des revendications précédentes, caractérisée en ce que les moyens d'attache (52, 54) sont disposés sur la face externe de la languette (20).Shoe according to any one of the preceding claims, characterized in that the attachment means (52, 54) are arranged on the external face of the tongue (20). Chaussure selon l'une quelconque des revendications précédentes, caractérisée en ce que le renfort (34) s'étend jusqu'à l'extrémité supérieure de la languette (20).Shoe according to any one of the preceding claims, characterized in that the reinforcement (34) extends to the upper end of the tongue (20). Chaussure selon l'une quelconque des revendications précédentes, caractérisée en ce que la partie haute de la tige de la chaussure est de construction plus souple que la partie basse de la tige.Shoe according to any one of the preceding claims, characterized in that the upper part of the upper of the shoe is of more flexible construction than the lower part of the upper. Chaussure selon l'une quelconque des revendications 1 à 9, caractérisée en ce que la tige (14) comporte, entre une partie basse (16) et une partie haute (18), une zone (28) de plus grande souplesse favorisant la flexion du pied au niveau de la cheville.Shoe according to any one of claims 1 to 9, characterized in that the upper (14) comprises, between a lower part (16) and an upper part (18), a zone (28) of greater flexibility promoting flexion from the foot to the ankle. Chaussure selon l'une quelconque des revendications précédentes, caractérisée en ce que la chaussure comporte une semelle (12) rigide.Shoe according to any one of the preceding claims, characterized in that the shoe comprises a rigid sole (12). Chaussure selon la revendication 12, caractérisée en ce que la semelle (12) de la chaussure est apte à recevoir des crampons à glace. Shoe according to claim 12, characterized in that the sole (12) of the shoe is capable of receiving ice spikes. Renfort de languette amovible pour une chaussure de marche à tige haute, caractérisé en ce qu'il se présente sous la forme d'une équerre dont chacune des deux branches (36, 38) présente des extrémités libres des branches (36, 38) qui sont prévues pour coopérer avec des moyens d'attache (52, 54) correspondant de la languette (20) de la chaussure.Removable tongue reinforcement for a walking shoe with high upper, characterized in that it is in the form of a square, each of the two branches (36, 38) of which has free ends of the branches (36, 38) which are provided to cooperate with attachment means (52, 54) corresponding to the tongue (20) of the shoe. Renfort de languette selon la revendication 14, caractérisé en ce qu'il comporte, au niveau de la jonction (40) de ses deux branches (36, 38), une zone privilégiée de flexion autour d'un axe transversal.Tongue reinforcement according to claim 14, characterized in that it comprises, at the junction (40) of its two branches (36, 38), a privileged zone of bending around a transverse axis. Renfort de languette selon l'une des revendications 14 ou 15, caractérisé en ce qu'il comporte, sur l'une au moins de ses deux branches (36, 38), des ailes latérales assouplies (42, 44).Tongue reinforcement according to one of claims 14 or 15, characterized in that it has, on at least one of its two branches (36, 38), softened lateral wings (42, 44). Renfort de languette selon l'une quelconque des revendications 14 à 16, caractérisé en ce que l'une au moins des deux branches 36, 38 présente, en section transversale, un profil courbe.Tongue reinforcement according to any one of claims 14 to 16, characterized in that at least one of the two branches 36, 38 has, in cross section, a curved profile.
EP02004841A 2001-04-06 2002-03-04 Walking shoe with removable upper reinforcement and reinforcement for such a shoe Withdrawn EP1247468A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0104909 2001-04-06
FR0104909A FR2823077B1 (en) 2001-04-06 2001-04-06 STEP SHOE COMPRISING A REMOVABLE UPPER OF ROD, AND REINFORCEMENT FOR SUCH A SHOE

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EP (1) EP1247468A1 (en)
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FR2823077A1 (en) 2002-10-11
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Effective date: 20050208