EP1685771B1 - Bi-layered part of a sports shoe with deformation zone - Google Patents

Bi-layered part of a sports shoe with deformation zone Download PDF

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Publication number
EP1685771B1
EP1685771B1 EP05425031A EP05425031A EP1685771B1 EP 1685771 B1 EP1685771 B1 EP 1685771B1 EP 05425031 A EP05425031 A EP 05425031A EP 05425031 A EP05425031 A EP 05425031A EP 1685771 B1 EP1685771 B1 EP 1685771B1
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EP
European Patent Office
Prior art keywords
axis
layer
boot
recesses
layers
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.)
Expired - Fee Related
Application number
EP05425031A
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German (de)
French (fr)
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EP1685771A1 (en
Inventor
Pascal Roux
Riccardo Perotto
Maurizio Botter
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.)
Lange International SA
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Lange International SA
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 Lange International SA filed Critical Lange International SA
Priority to EP05425031A priority Critical patent/EP1685771B1/en
Priority to DE602005006090T priority patent/DE602005006090T9/en
Priority to US11/338,530 priority patent/US7716854B2/en
Publication of EP1685771A1 publication Critical patent/EP1685771A1/en
Application granted granted Critical
Publication of EP1685771B1 publication Critical patent/EP1685771B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0072—Footwear characterised by the material made at least partially of transparent or translucent materials
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B11/00—Footwear with arrangements to facilitate putting-on or removing, e.g. with straps
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/0476—Front-entry skiboots
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/04—Ski or like boots
    • A43B5/0427—Ski or like boots characterised by type or construction details
    • A43B5/0482—Ski or like boots characterised by type or construction details made from materials with different rigidities
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • A43B5/1625—Skating boots made from materials with different rigidities
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B5/00—Footwear for sporting purposes
    • A43B5/16—Skating boots
    • A43B5/1666—Skating boots characterised by the upper
    • A43B5/1691—Skating boots characterised by the upper characterised by the higher part of the upper, e.g. surrounding the ankle, by the quarter or cuff
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43C—FASTENINGS OR ATTACHMENTS OF FOOTWEAR; LACES IN GENERAL
    • A43C11/00—Other fastenings specially adapted for shoes
    • A43C11/14—Clamp fastenings, e.g. strap fastenings; Clamp-buckle fastenings; Fastenings with toggle levers

Definitions

  • the invention relates to a portion of a sports shoe such as a collar, a shell or a strap as well as the sports shoe itself, and its method of manufacture. It is particularly suitable for boards for gliding such as ski or surf or skating shoes, which are under heavy stress and are used in aggressive environments.
  • a ski boot for example requires on the one hand a significant resistance and on the other hand a high level of comfort. Indeed, such a shoe undergoes many efforts during its use and must therefore be endowed with good resistance. Strong rigidity is also necessary to achieve a good performance of the shoe which, as an intermediary between the skier and the ski, transmits the efforts of the skier to the ski to guide the latter. However, its comfort constraints are also high. In particular, the boot must have sufficient flexibility to allow the skier to open it for putting on and off, allow him to bend his knees forward to ski, and provide him with sufficient comfort despite his use in extreme conditions. of temperature and in a humid and aggressive environment.
  • An object of the present invention is to provide a sports shoe that does not have the disadvantages of the prior art.
  • a first object of the present invention to provide a sports shoe that allows easy donning and removal, while providing good rigidity and therefore achieving good performance.
  • a second object of the invention is to provide a sports shoe whose aesthetics is attractive.
  • a third object of the present invention is to provide a sports shoe whose manufacturing process remains simple and compatible with multi-injection methods.
  • a part of the sports shoe comprises two layers of superimposed plastic materials, a layer of which is present in a small quantity on a deformation axis, via one or more recesses, to define a zone of deformation of the part of the shoe, this deformation having the function of facilitating the boot and / or the heaving.
  • a ski boot comprises a collar 1 incorporating a first embodiment of the invention.
  • the collar 1 is rotatably mounted on a shell 2, around a transverse horizontal axis 3, the assembly incorporating a liner 10.
  • the collar 1 can thus rotate slightly about this axis 3 to allow a necessary flexibility to the skier who flexes his knees when he's skiing.
  • This collar 1 further comprises an opening on the front for easy donning, as is known in the prior art, and clipping elements 6 on either side of the opening to close the collar to ski .
  • Part of the collar 1 comprises a rigid outer layer 4, for example polyurethane or polypropylene hardness of 55 shd, and a softer inner layer 5, for example polyurethane or polypropylene hardness of 45 shd.
  • the outer layer 4 comprises a narrowing zone 7, made by recesses 9 of the layer 4, which forms a substantially vertical lateral axis 8 along which the collar comprises little rigid material.
  • the constriction 7 consists of a height of approximately three centimeters of rigid material, representing approximately one third of the total height of the collar, the other two thirds thus comprising only the softer material of the inner layer 5 of the necklace, the height being understood by the measurement along a vertical axis, as the axis 8.
  • the axis 8 is placed laterally but it could alternatively be placed on the back of the collar.
  • the combination between the two layers 4 and 5 of plastic material makes it possible to define an optimum solution between the desired comfort and the overall rigidity of the collar necessary for the performance of the shoe.
  • the top of the collar 1, which bears on the shin of the skier comprises a zone of low height which comprises only the inner layer of the skier. more flexible 5 not to hurt the skier whose shin pressure is strong in this area during skiing.
  • the rigid material of the collar of the outer layer 4 covers a generally large height of the collar on the front of the leg, greater than 50% of this height with the exception of the narrowing 7 described above, to allow good transmission of the skier's efforts to ski and therefore get a good performance of the shoe.
  • This solution combining two layers makes it possible to achieve a good compromise between comfort and stiffness for the shoe.
  • the narrowing 7 greatly increases the possible deformation of the collar and its release by rotation about the axis 8 when the fastening elements 6 are not closed, which significantly facilitates the boot and heaving of the shoe.
  • This narrowing 7 concerns only a small part of the overall circumference of the collar and has no significant impact on the rigidity of the collar and the performance of the shoe is not changed.
  • the inner layer 5 also has the function of sealing the collar, in particular at the recesses 9 of the layer 4 on the axis 8.
  • the ski boot described above can be manufactured according to a bi-injection manufacturing process of the two layers of plastic material to form the collar.
  • This commonly used method has the advantage of speed and simplicity. It comprises a first step of injection of the inner layer 5 and then a second superinjection stage of the outer layer 4, with the formation of the recesses 9 to form the constriction 7.
  • the ski boot described above can be manufactured by the injection of the outer layer 4 and the mechanical fastening or bonding or welding of the inner layer 5 made separately. This process makes it possible to modify the dimensions of the inner layer without having a new complex whole necklace mold to be developed.
  • FIG. figure 2a schematically illustrates a first embodiment of the invention which corresponds to that implemented on the ski boot described above, shown in FIG. figure 1 , in which the recesses 9 are formed on the ends of the layer 4 to form a narrowing 7 of this layer 4.
  • the figure 2b illustrates a second embodiment of the invention, wherein the axis 8 is oblique by way of example, and wherein the layer 4 comprises a plurality of recesses 9 of small sizes, suggesting the inner layer 5.
  • the Figure 2c illustrates a third embodiment which comprises of course a wide focus 9 on the height of the collar, which defines an oblong opening in the outer layer 4.
  • the recess (s) may not be totally traversing in the outer layer 4.
  • the order of the two layers could be reversed, the inner layer comprising the recess (s) to form the axis of rotation 8.
  • the latter can have any direction that allows the release of a portion of the shoe to facilitate the boot and the heaving of the shoe.
  • the solution can be implemented on the sole circumference of the shoe concerned by the need for opening for the boot, the other part of the circumference, for example the rear, remaining traditional.
  • Both layers can also include both recesses, distributed so as to maintain the tightness of the shoe, for example by their non-overlap.
  • the two layers may have hardnesses different from the example illustrated above without departing from the scope of the invention, from the moment when the overall hardness of the collar is substantially reduced along an axis 8 to allow its deformation on along this axis.
  • the figure 3 illustrates a second example of implementation of the invention on the shell 2 of a sports shoe, more specifically on a portion of the shell forming a flap on an opening of the shell positioned at the instep.
  • This flap is formed of two superimposed layers, the outer layer 4 comprising recesses 9 forming a narrowing 7 of this layer on an axis 8 which defines a deformation axis.
  • the flap thus acquires a greatly increased possibility of disengagement from the zone of the instep of the hull, thus enlarging the opening and facilitating the booting and the loosening of the boot.
  • the figure 4 illustrates a third example of implementation of the invention, on a strap 11 of sports shoe.
  • a strap can for example be used for closing and tightening the sports shoe, by superimposing on the openings of the collar 1 and / or the hull 2 mentioned (s) previously.
  • a strap consists of two layers of material, the layer 4 having recesses 9 to form an axis of rotation 8.
  • the strap may be manufactured such that in the open position of the shoe, it has an angle around the axis 8 which releases it from the opening of the boot and thus naturally facilitates in the rest position the boot and the heaving of the shoe.
  • the user grasps the strap, rotates it about the axis 8 to superpose it on the opening to close, before actuating the usual closing means.
  • the collar and / or the shell of the shoe may have a portion whose rest position has an angle about an axis 8 opposite the rest of the shoe to create an enlargement of the shoe. an opening of the shoe that facilitates its entry and its heaving.
  • the concept of the invention can be carried over on straps placed on certain bindings of gliding shoe, bindings which sometimes include some of the functions of the sports shoes mentioned above.
  • some surf bindings comprise a shoe-shell portion, attached to the surf, including closure straps, in which a relatively soft liner is placed, which is closed and tightened by these straps.
  • the closing and tightening straps of the shoe have been offset on the gliding board.
  • the overall concept of the invention remains the same since it is always easier to position the foot on the gliding board.
  • the invention also applies to all or part of the shoe that is fixed on a gliding machine, such as a skate, a surf ...
  • the concept of the invention also offers increased possibilities in terms of the aesthetic appearance of the shoe. Indeed, it is possible for example to use at least one translucent or transparent layer, positioned for example on the layer with recesses, to allow viewing these recesses while protecting them. In such a case, printing, marking or any intermediate medium, placed between the two layers, can be used to amplify the highlighting of the recesses. In another example, the material of the inner layer, in a case where it is more flexible and of different appearance, can also occupy the volume of the recesses of the upper layer more rigid and thus create an attractive aesthetic effect.

Description

L'invention concerne une partie de chaussure de sport comme un collier, une coque ou une sangle ainsi que la chaussure de sport elle-même, et son procédé de fabrication. Elle est particulièrement adaptée aux chaussures pour planche de glisse telle que ski ou surf ou des chaussures de patinage, qui subissent des efforts importants et sont utilisées dans des environnements agressifs.The invention relates to a portion of a sports shoe such as a collar, a shell or a strap as well as the sports shoe itself, and its method of manufacture. It is particularly suitable for boards for gliding such as ski or surf or skating shoes, which are under heavy stress and are used in aggressive environments.

Une chaussure de ski par exemple exige d'une part une résistance importante et d'autre part un niveau de confort élevé. En effet, une telle chaussure subit de nombreux efforts lors de son utilisation et doit par conséquent être dotée d'une bonne résistance. Une forte rigidité est aussi nécessaire pour atteindre une bonne performance de la chaussure qui, en tant qu'intermédiaire entre le skieur et le ski, transmet les efforts du skieur au ski afin de guider ce dernier. Toutefois, ses contraintes au niveau du confort sont aussi élevées. La chaussure doit notamment posséder une souplesse suffisante pour permettre au skieur de l'ouvrir pour la chausser et l'enlever, lui permettre de fléchir ses genoux vers l'avant pour skier, et lui assurer un confort suffisant malgré son utilisation dans les conditions extrêmes de température et dans un environnement humide et agressif.A ski boot for example requires on the one hand a significant resistance and on the other hand a high level of comfort. Indeed, such a shoe undergoes many efforts during its use and must therefore be endowed with good resistance. Strong rigidity is also necessary to achieve a good performance of the shoe which, as an intermediary between the skier and the ski, transmits the efforts of the skier to the ski to guide the latter. However, its comfort constraints are also high. In particular, the boot must have sufficient flexibility to allow the skier to open it for putting on and off, allow him to bend his knees forward to ski, and provide him with sufficient comfort despite his use in extreme conditions. of temperature and in a humid and aggressive environment.

Pour répondre à ces contraintes élevées et contradictoires, une solution est décrite dans le brevet W003001937 qui repose sur un collier composé d'au moins deux parties distinctes, dont un panneau lié avec le reste du collier par une charnière afin de permettre le dégagement d'une ouverture de taille facilitant grandement le chaussage et le déchaussage du pied. Avec cette solution, un matériau rigide peut être utilisé pour le panneau pour atteindre des bonnes performances de la chaussure. Ce panneau peut aussi être fabriqué dans un matériau différent du reste de la chaussure. Un premier inconvénient de cette solution est qu'elle nécessite la fabrication séparée de plusieurs parties distinctes du collier de la chaussure puis nécessite une étape d'assemblage mécanique complexe de ces parties. Un second inconvénient de la solution est qu'elle entraîne un risque de non-étanchéité au niveau de la charnière. Un troisième inconvénient est qu'elle est peu esthétique. Enfin, elle est peu compatible avec les solutions de fabrication aujourd'hui retenues de multi-injections.To meet these high and contradictory constraints, a solution is described in the patent W003001937 which rests on a collar composed of at least two distinct parts, including a panel linked with the rest of the collar by a hinge to allow the release of a size opening greatly facilitating the donning and removal of the foot. With this solution, a rigid material can be used for the panel to achieve good performance of the shoe. This panel can also be made of a material different from the rest of the shoe. A first disadvantage of this solution is that it requires the separate manufacture of several separate parts of the boot collar and then requires a complex mechanical assembly step of these parts. A second disadvantage of the solution is that it involves a risk of non-sealing at the hinge. A third disadvantage is that it is unattractive. Finally, it is not very compatible with the manufacturing solutions currently used for multi-injection.

Une autre solution est décrite dans le brevet EP0659358 qui repose sur une rainure réalisée sur toute la longueur d'une partie dure de la coque pour faciliter l'ouverture d'un rabat sur le cou de pied lors du chaussage ou déchaussage de la chaussure. L'inconvénient de cette solution est qu'elle complique le procédé de fabrication, puisque la rainure doit être réalisée sur une longueur importante et nécessite un moule avec une contre-dépouille complexes, qu'elle est peu esthétique et peu compatible avec les solutions aujourd'hui utilisées de multi-injections.Another solution is described in the EP0659358 which rests on a groove made over the entire length of a hard part of the shell to facilitate the opening of a flap on the instep when putting on or off the boot. The disadvantage of this solution is that it complicates the manufacturing process, since the groove must be made over a long length and requires a mold with a complex undercut, it is unattractive and not compatible with the solutions today used multi-injections.

Il existe donc un besoin d'une autre solution pour tenter d'atteindre les contraintes de rigidité et de confort rappelées ci-dessus, et plus particulièrement permettre un chaussage et un déchaussage facile d'une chaussure.There is therefore a need for another solution to try to achieve the constraints of rigidity and comfort mentioned above, and more particularly to allow a boot and easy removal of a shoe.

Un objet de la présente invention consiste à proposer une chaussure de sport qui ne présente pas les inconvénients de l'art antérieur.An object of the present invention is to provide a sports shoe that does not have the disadvantages of the prior art.

Plus précisément, un premier objet de la présente invention consiste à proposer une chaussure de sport qui permet son chaussage et son déchaussage facile, tout en offrant une bonne rigidité et donc atteignant une bonne performance.More specifically, a first object of the present invention to provide a sports shoe that allows easy donning and removal, while providing good rigidity and therefore achieving good performance.

Un second objet de l'invention consiste à proposer une chaussure de sport dont l'esthétique est attrayante.A second object of the invention is to provide a sports shoe whose aesthetics is attractive.

Un troisième objet de la présente invention consiste à proposer une chaussure de sport dont le procédé de fabrication reste simple et compatible avec les procédés de multi-injections.A third object of the present invention is to provide a sports shoe whose manufacturing process remains simple and compatible with multi-injection methods.

Selon le concept de l'invention, une partie de la chaussure de sport comprend deux couches de matériaux plastiques superposées dont une couche est présente en faible quantité sur un axe de déformation, par l'intermédiaire d'un ou plusieurs évidements, pour définir une zone de déformation de la partie de la chaussure, cette déformation ayant pour fonction de faciliter le chaussage et/ou le déchaussage.According to the concept of the invention, a part of the sports shoe comprises two layers of superimposed plastic materials, a layer of which is present in a small quantity on a deformation axis, via one or more recesses, to define a zone of deformation of the part of the shoe, this deformation having the function of facilitating the boot and / or the heaving.

L'invention est plus précisément définie par les revendications.The invention is more precisely defined by the claims.

Ces objets, caractéristiques et avantages de la présente invention seront exposés en détail dans la description suivante de modes d'exécution particuliers faits à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 représente une vue en perspective d'une chaussure de ski selon un premier mode d'implémentation de l'invention ;
  • les figures 2a à 2c illustrent schématiquement trois modes d'exécution de l'invention ;
  • la figure 3 représente une coque de chaussure de sport selon un second mode d'implémentation de l'invention ;
  • la figure 4 représente une sangle selon un troisième mode d'implémentation de l'invention.
These objects, features and advantages of the present invention will be set forth in detail in the following description of particular embodiments given in a non-limiting manner in relation to the appended figures among which:
  • The figure 1 represents a perspective view of a ski boot according to a first embodiment of the invention;
  • the Figures 2a to 2c schematically illustrate three embodiments of the invention;
  • the figure 3 represents a sports shoe shell according to a second embodiment of the invention;
  • the figure 4 represents a strap according to a third embodiment of the invention.

Selon un premier mode d'implémentation illustré sur la figure 1, une chaussure de ski comprend un collier 1 intégrant un premier mode d'exécution de l'invention. Le collier 1 est monté mobile en rotation sur une coque 2, autour d'un axe horizontal transversal 3, l'ensemble intégrant un chausson 10. Le collier 1 peut ainsi tourner légèrement autour de cet axe 3 pour permettre une souplesse nécessaire au skieur qui fléchit les genoux quand il skie. Ce collier 1 comprend de plus une ouverture sur l'avant pour faciliter le chaussage, comme cela est connu dans l'art antérieur, et des éléments d'accrochages 6 de part et d'autre de l'ouverture pour fermer le collier pour skier. Une partie du collier 1 comprend une couche extérieure rigide 4, par exemple en polyuréthane ou en polypropylène de dureté de 55 shd, et une couche intérieure plus souple 5, par exemple en polyuréthane ou en polypropylène de dureté de 45 shd. La couche extérieure 4 comprend une zone de rétrécissement 7, réalisée par des évidements 9 de la couche 4, qui forme un axe latéral sensiblement vertical 8 le long duquel le collier comprend peu de matériau rigide. A titre d'exemple, le rétrécissement 7 consiste en une hauteur d'environ trois centimètres de matériau rigide, représentant environ le tiers de la hauteur totale du collier, les deux autres tiers comprenant donc uniquement le matériau plus souple de la couche intérieure 5 du collier, la hauteur s'entendant par la mesure selon un axe vertical, comme l'axe 8.According to a first implementation mode illustrated on the figure 1 , a ski boot comprises a collar 1 incorporating a first embodiment of the invention. The collar 1 is rotatably mounted on a shell 2, around a transverse horizontal axis 3, the assembly incorporating a liner 10. The collar 1 can thus rotate slightly about this axis 3 to allow a necessary flexibility to the skier who flexes his knees when he's skiing. This collar 1 further comprises an opening on the front for easy donning, as is known in the prior art, and clipping elements 6 on either side of the opening to close the collar to ski . Part of the collar 1 comprises a rigid outer layer 4, for example polyurethane or polypropylene hardness of 55 shd, and a softer inner layer 5, for example polyurethane or polypropylene hardness of 45 shd. The outer layer 4 comprises a narrowing zone 7, made by recesses 9 of the layer 4, which forms a substantially vertical lateral axis 8 along which the collar comprises little rigid material. By way of example, the constriction 7 consists of a height of approximately three centimeters of rigid material, representing approximately one third of the total height of the collar, the other two thirds thus comprising only the softer material of the inner layer 5 of the necklace, the height being understood by the measurement along a vertical axis, as the axis 8.

Selon ce mode d'exécution, l'axe 8 est placé latéralement mais il pourrait aussi en variante être placé sur l'arrière du collier.According to this embodiment, the axis 8 is placed laterally but it could alternatively be placed on the back of the collar.

La combinaison entre les deux couches 4 et 5 de matériau plastique permet de définir une solution optimale entre le confort recherché et la rigidité globale du collier nécessaire à la performance de la chaussure. Le haut du collier 1, qui vient en appui sur le tibia du skieur, comprend une zone de faible hauteur qui comprend uniquement la couche intérieure la plus souple 5 pour ne pas blesser le skieur dont la pression du tibia est forte en cette zone pendant le ski. Le matériau rigide du collier de la couche extérieure 4 couvre toutefois une hauteur globalement importante du collier sur le devant de la jambe, supérieure à 50% de cette hauteur à l'exception du rétrécissement 7 décrit ci-dessus, pour permettre une bonne transmission des efforts du skieur au ski et donc obtenir une bonne performance de la chaussure. Cette solution combinant deux couches permet donc d'atteindre un bon compromis entre confort et rigidité pour la chaussure.The combination between the two layers 4 and 5 of plastic material makes it possible to define an optimum solution between the desired comfort and the overall rigidity of the collar necessary for the performance of the shoe. The top of the collar 1, which bears on the shin of the skier, comprises a zone of low height which comprises only the inner layer of the skier. more flexible 5 not to hurt the skier whose shin pressure is strong in this area during skiing. The rigid material of the collar of the outer layer 4, however, covers a generally large height of the collar on the front of the leg, greater than 50% of this height with the exception of the narrowing 7 described above, to allow good transmission of the skier's efforts to ski and therefore get a good performance of the shoe. This solution combining two layers makes it possible to achieve a good compromise between comfort and stiffness for the shoe.

De plus, le rétrécissement 7 permet d'augmenter grandement la déformation possible du collier et son dégagement par rotation autour de l'axe 8 quand les éléments d'accrochage 6 ne sont pas fermés, ce qui facilite de manière significative le chaussage et le déchaussage de la chaussure. Ce rétrécissement 7 ne concerne qu'une faible partie de la circonférence globale du collier et n'a pas d'impact sensible sur la rigidité du collier et la performance de la chaussure n'est pas modifiée. La couche intérieure 5 a aussi pour fonction d'assurer l'étanchéité du collier, notamment au niveau des évidements 9 de la couche 4 sur l'axe 8.In addition, the narrowing 7 greatly increases the possible deformation of the collar and its release by rotation about the axis 8 when the fastening elements 6 are not closed, which significantly facilitates the boot and heaving of the shoe. This narrowing 7 concerns only a small part of the overall circumference of the collar and has no significant impact on the rigidity of the collar and the performance of the shoe is not changed. The inner layer 5 also has the function of sealing the collar, in particular at the recesses 9 of the layer 4 on the axis 8.

Selon un premier mode d'exécution, la chaussure de ski précédemment décrite peut être fabriquée selon un procédé de fabrication de bi-injection des deux couches de matériau plastique pour former le collier. Ce procédé couramment utilisé présente l'avantage de la rapidité et de la simplicité. Il comprend une première étape d'injection de la couche intérieure 5 puis une seconde étape de surinjection de la couche extérieure 4, avec la formation des évidements 9 pour former le rétrécissement 7.According to a first embodiment, the ski boot described above can be manufactured according to a bi-injection manufacturing process of the two layers of plastic material to form the collar. This commonly used method has the advantage of speed and simplicity. It comprises a first step of injection of the inner layer 5 and then a second superinjection stage of the outer layer 4, with the formation of the recesses 9 to form the constriction 7.

Selon un second mode d'exécution, la chaussure de ski précédemment décrite peut être fabriquée par l'injection de la couche extérieure 4 et la fixation mécanique ou par un collage ou une soudure de la couche intérieure 5 fabriquée séparément. Ce procédé permet de pouvoir modifier les dimensions de la couche intérieure sans avoir un nouveau moule complexe de collier entier à élaborer.According to a second embodiment, the ski boot described above can be manufactured by the injection of the outer layer 4 and the mechanical fastening or bonding or welding of the inner layer 5 made separately. This process makes it possible to modify the dimensions of the inner layer without having a new complex whole necklace mold to be developed.

La figure 2a illustre schématiquement un premier mode d'exécution de l'invention qui correspond à celui implémenté sur la chaussure de ski décrite précédemment, représentée en figure 1, dans lequel les évidements 9 sont formés sur les extrémités de la couche 4 pour former un rétrécissement 7 de cette couche 4.The figure 2a schematically illustrates a first embodiment of the invention which corresponds to that implemented on the ski boot described above, shown in FIG. figure 1 , in which the recesses 9 are formed on the ends of the layer 4 to form a narrowing 7 of this layer 4.

La figure 2b illustre un second mode d'exécution de l'invention, dans lequel l'axe 8 est oblique à titre d'exemple, et dans lequel la couche 4 comprend plusieurs évidements 9 de petites tailles, laissant entrevoir la couche intérieure 5.The figure 2b illustrates a second embodiment of the invention, wherein the axis 8 is oblique by way of example, and wherein the layer 4 comprises a plurality of recesses 9 of small sizes, suggesting the inner layer 5.

La figure 2c illustre un troisième mode d'exécution qui comprend un large évidemment 9 centré sur la hauteur du collier, qui définit une ouverture oblongue dans la couche extérieure 4.The Figure 2c illustrates a third embodiment which comprises of course a wide focus 9 on the height of the collar, which defines an oblong opening in the outer layer 4.

Selon des variantes non représentées, le(s) évidement(s) pourrai(en)t ne pas être totalement traversant(s) dans la couche extérieure 4. De plus, l'ordre des deux couches pourrait être inversé, la couche intérieure comportant le(s) évidement(s) pour former l'axe de rotation 8. Ce dernier peut avoir toute direction qui permet le dégagement d'une partie de la chaussure pour faciliter le chaussage et le déchaussage de la chaussure. La solution peut être implémentée sur la seule circonférence de la chaussure concernée par la nécessité d'ouverture pour le chaussage, l'autre partie de la circonférence, par exemple l'arrière, restant traditionnelle. Les deux couches peuvent aussi comprendre toutes deux des évidements, répartis de sorte de conserver l'étanchéité de la chaussure, par exemple par leur non superposition. Enfin, les deux couches peuvent avoir des duretés différentes de l'exemple illustré précédemment sans sortir du cadre de l'invention, à partir du moment où la dureté globale du collier est sensiblement réduite le long d'un axe 8 pour permettre sa déformation le long de cet axe.According to variants not shown, the recess (s) may not be totally traversing in the outer layer 4. In addition, the order of the two layers could be reversed, the inner layer comprising the recess (s) to form the axis of rotation 8. The latter can have any direction that allows the release of a portion of the shoe to facilitate the boot and the heaving of the shoe. The solution can be implemented on the sole circumference of the shoe concerned by the need for opening for the boot, the other part of the circumference, for example the rear, remaining traditional. Both layers can also include both recesses, distributed so as to maintain the tightness of the shoe, for example by their non-overlap. Finally, the two layers may have hardnesses different from the example illustrated above without departing from the scope of the invention, from the moment when the overall hardness of the collar is substantially reduced along an axis 8 to allow its deformation on along this axis.

Le concept de l'invention tel que présenté ci-dessus peut être implémenté sur toute partie de la chaussure de sport, le procédé de fabrication convenant de même pour toute partie.The concept of the invention as presented above can be implemented on any part of the sports shoe, the manufacturing method equally suitable for any part.

La figure 3 illustre un second exemple d'implémentation de l'invention sur la coque 2 d'une chaussure de sport, plus précisément sur une partie de la coque formant un rabat sur une ouverture de la coque positionnée au niveau du cou de pied. Ce rabat est formé de deux couches superposées, la couche extérieure 4 comprenant des évidements 9 formant un rétrécissement 7 de cette couche sur un axe 8 qui définit un axe de déformation. Le rabat acquiert ainsi une possibilité grandement accrue de dégagement de la zone du cou de pied de la coque, agrandissant ainsi l'ouverture et facilitant le chaussage et le déchaussage de la chaussure.The figure 3 illustrates a second example of implementation of the invention on the shell 2 of a sports shoe, more specifically on a portion of the shell forming a flap on an opening of the shell positioned at the instep. This flap is formed of two superimposed layers, the outer layer 4 comprising recesses 9 forming a narrowing 7 of this layer on an axis 8 which defines a deformation axis. The flap thus acquires a greatly increased possibility of disengagement from the zone of the instep of the hull, thus enlarging the opening and facilitating the booting and the loosening of the boot.

La figure 4 illustre un troisième exemple d'implémentation de l'invention, sur une sangle 11 de chaussure de sport. En effet, une telle sangle peut par exemple servir à la fermeture et au serrage de la chaussure de sport, par superposition sur les ouvertures du collier 1 et/ou de la coque 2 mentionné(e)(s) précédemment. Pour faciliter le chaussage et le déchaussage, il est aussi intéressant de pouvoir dégager au maximum cette sangle pour pouvoir agrandir au mieux l'ouverture de la chaussure lors de son chaussage et de son déchaussage. Selon le concept de l'invention, une telle sangle se compose de deux couches de matériaux, la couche 4 possédant des évidements 9 pour former un axe de rotation 8.The figure 4 illustrates a third example of implementation of the invention, on a strap 11 of sports shoe. Indeed, such a strap can for example be used for closing and tightening the sports shoe, by superimposing on the openings of the collar 1 and / or the hull 2 mentioned (s) previously. To facilitate the boot and heaving, it is also interesting to be able to free up the strap to be able to maximize the opening of the boot when donning and heaving. According to the concept of According to the invention, such a strap consists of two layers of material, the layer 4 having recesses 9 to form an axis of rotation 8.

La sangle peut être fabriquée de telle sorte qu'en position ouverte de la chaussure, elle présente un angle autour de l'axe 8 qui la dégage de l'ouverture de la chaussure et facilite ainsi naturellement en position de repos le chaussage et le déchaussage de la chaussure. Pour fermer la chaussure, l'utilisateur saisit la sangle, la fait tourner autour de l'axe 8 pour la superposer à l'ouverture à fermer, avant d'actionner les moyens de fermeture habituels. De même, dans les implémentations précédentes, le collier et/ou la coque de la chaussure peuvent avoir une partie dont la position au repos présente un angle autour d'un axe 8 vis à vis du reste de la chaussure pour créer un agrandissement d'une ouverture de la chaussure qui permet de faciliter son chaussage et son déchaussage.The strap may be manufactured such that in the open position of the shoe, it has an angle around the axis 8 which releases it from the opening of the boot and thus naturally facilitates in the rest position the boot and the heaving of the shoe. To close the shoe, the user grasps the strap, rotates it about the axis 8 to superpose it on the opening to close, before actuating the usual closing means. Similarly, in the previous implementations, the collar and / or the shell of the shoe may have a portion whose rest position has an angle about an axis 8 opposite the rest of the shoe to create an enlargement of the shoe. an opening of the shoe that facilitates its entry and its heaving.

En variante de cette dernière implémentation, le concept de l'invention peut être reporté sur des sangles placées sur certaines fixations de chaussure sur planche de glisse, fixations qui comprennent parfois certaines des fonctions des chaussures de sport mentionnées ci-dessus. Par exemple, certaines fixations de surf comprennent une partie en forme de coque de chaussure, fixée sur le surf, comprenant des sangles de fermeture, dans laquelle on place un chausson relativement souple, qui est fermé et serré par ces sangles. Dans un tel cas, les sangles de fermeture et de serrage de la chaussure ont été déportées sur la planche de glisse. Toutefois, le concept global de l'invention reste le même puisqu'il faut toujours faciliter le positionnement du pied sur la planche de glisse. Ainsi, l'invention s'applique aussi à tout ou partie de chaussure qui est fixe sur un engin de glisse, comme un patin, un surf...As a variant of this latter implementation, the concept of the invention can be carried over on straps placed on certain bindings of gliding shoe, bindings which sometimes include some of the functions of the sports shoes mentioned above. For example, some surf bindings comprise a shoe-shell portion, attached to the surf, including closure straps, in which a relatively soft liner is placed, which is closed and tightened by these straps. In such a case, the closing and tightening straps of the shoe have been offset on the gliding board. However, the overall concept of the invention remains the same since it is always easier to position the foot on the gliding board. Thus, the invention also applies to all or part of the shoe that is fixed on a gliding machine, such as a skate, a surf ...

Le concept de l'invention offre aussi des possibilités accrues au niveau de l'aspect esthétique de la chaussure. En effet, il est possible par exemple d'utiliser au moins une couche translucide ou transparente, positionnée par exemple sur la couche avec évidements, pour permettre de visualiser ces évidements tout en les protégeant. Dans un tel cas, une impression, un marquage ou un support quelconque intermédiaire, disposé entre les deux couches, peut permettre d'amplifier la mise en évidence des évidements. Selon un autre exemple, le matériau de la couche intérieure, dans un cas où il est plus souple et d'aspect différent, peut aussi occuper le volume des évidements de la couche supérieure plus rigide et créer ainsi un effet esthétique attrayant.The concept of the invention also offers increased possibilities in terms of the aesthetic appearance of the shoe. Indeed, it is possible for example to use at least one translucent or transparent layer, positioned for example on the layer with recesses, to allow viewing these recesses while protecting them. In such a case, printing, marking or any intermediate medium, placed between the two layers, can be used to amplify the highlighting of the recesses. In another example, the material of the inner layer, in a case where it is more flexible and of different appearance, can also occupy the volume of the recesses of the upper layer more rigid and thus create an attractive aesthetic effect.

Finalement, la solution atteint bien les objets recherchés et présente les avantages suivants :

  • une partie de la chaussure de sport, comme un collier, une coque ou une sangle, peut permettre de faciliter grandement le chaussage et le déchaussage et donc le confort de la chaussure, tout en conservant une rigidité globale importante ;
  • la combinaison des deux couches, qui peuvent avoir des propriétés mécaniques et des aspects différents, permet d'augmenter le confort de la chaussure, offre des possibilités esthétiques attrayantes et garantit l'étanchéité;
  • la solution peut être facilement obtenue par les procédés de fabrication courants de multi-injections, tout en restant compatible avec des procédés plus anciens.
Finally, the solution achieves the desired objects and has the following advantages:
  • a portion of the sports shoe, such as a collar, a shell or a strap, can greatly facilitate the donning and heaving and therefore the comfort of the shoe, while maintaining a significant overall rigidity;
  • the combination of the two layers, which can have different mechanical properties and different aspects, makes it possible to increase the comfort of the shoe, offers attractive aesthetic possibilities and guarantees the seal;
  • the solution can be easily obtained by the usual manufacturing processes of multi-injections, while remaining compatible with older processes.

Claims (17)

  1. A sports boot lower-leg part comprising a part comprising at least two superposed layers of plastic at least partially surrounding the lower leg and comprising an opening that can be closed by catching means (6) distributed on either side of this opening, the two layers (4, 5) being fixed one against the other, by mechanical fixing, adhesive bonding or welding or further to injection of one layer over the other, wherein one of the layers (4) has one or more recesses (9) lying on an axis (8) in order to define a deformation axis of the lower-leg part, the overall hardness of the lower-leg part is substantially reduced along said axis (8), said deformation axis (8 ) allowing that part of the lower-leg part that is around this axis (8) to move away in order to enlarge the opening and make it easier to put the boot on and to take it off, the other layer (5) guarantying the leaktightness at the said recesses (9).
  2. The sports boot lower-leg part as claimed in the preceding claim, wherein the axis (8) is substantially vertical and wherein, along this deformation axis (8), the meeting of the non-recessed parts of the layer (4) represents a height that is less than one third of the overall height of the lower-leg part on the vertical axis (8).
  3. The sports boot lower-leg part as claimed in one of the preceding claims, wherein the axis (8) is placed laterally.
  4. The sports boot lower-leg part as claimed in one of claims 1 or 2, wherein the axis (8) is placed at the rear of the lower-leg part.
  5. A sports boot shell comprising a part comprising at least two superposed layers of plastic and comprising an opening that can be closed by attaching means distributed on either side of this opening, the two layers (4, 5) being fixed one against the other by mechanical fixing, adhesive bonding or welding or further to injection of one layer over the other, wherein one (4) of the two layers has one or more recesses (9) lying on an axis (8) in order to define a deformation axis of the shell, the overall hardness of the shell is substantially reduced along said axis (8), allowing that part of the shell that lies about this axis (8) to move away in order to enlarge the opening and to make it easier to put the boot on and to take it off, the other layer (5) guarantying the leaktightness at the said recesses (9).
  6. The sports boot shell as claimed in the preceding claim, wherein that part of the shell that can be moved away around the axis (8) in order to make it easier to put the boot on and to take it off is a flap placed over the instep.
  7. A strap for closing and tightening a sports boot comprising a part comprising at least two superposed layers of plastic, wherein the two layers (4, 5) are fixed one against the other by mechanical fixing, adhesive bonding or welding or further to injection of one layer over the other, and wherein one (4) of the two layers has one or more recesses (9) lying on an axis (8) in order to define a deformation axis of the strap, the overall hardness of the strap is substantially reduced along said axis (8), allowing that part of the strap that lies around this axis (8) to move away in order to enlarge an opening and to make it easier to put the boot on and to take it off, the other layer (5) guarantying the leaktightness at the said recesses (9).
  8. A sports boot comprising a part comprising at least two superposed layers of plastic and comprising an opening that can be closed by attaching means distributed on either side of this opening, the two layers (4, 5) being fixed one against the other, by mechanical fixing, adhesive bonding or welding or further to injection of one layer over the other, wherein one of the layers (4) has one or more recesses (9) lying on an axis (8) in order to define a deformation axis of the part of the boot, the overall hardness of the part of the boot is substantially reduced along said axis (8), said deformation axis (8 ) allowing that part of the shell that is around this axis (8) to move away in order to enlarge the opening and make it easier to put the boot on and to take it off, the other layer (5) guarantying the leaktightness at the said recesses (9).
  9. The sports boot as claimed in claim 8, wherein a layer (4) comprises recesses (9) formed on its ends in order to form a narrowing (7) of this layer (4).
  10. The sports boot as claimed in claim 8, wherein a layer (4) comprises at least one recess (9) forming an opening within the layer (4).
  11. The sports boot as claimed in claim 10, wherein the recess (9) is a wide, substantially central opening of oblong shape.
  12. The sports boot as claimed in claim 10, wherein a layer (4) comprises a plurality of small recesses (9) that are substantially in line.
  13. The sports boot as claimed in one of claims 8 to 12, which comprises a rigid layer (4) comprising at least one recess (9) and another, more flexible layer (5).
  14. The sports boot as claimed in one of claims 8 to 13, which comprises at least one transparent or translucent layer.
  15. The sports boot as claimed in claim 14, which comprises an impression between the two layers in order visually to reveal the recesses (9).
  16. A method for manufacturing a sports boot part comprising the production of two layers (4, 5) by means of multiple injection, wherein at least one (4) of the layers is produced with one or more recesses (9) lying on a deformation axis (8), the overall hardness of the part of the boot is substantially reduced along said axis (8), the other layer (5) guarantying the leaktightness at the said recesses (9)
  17. A method for manufacturing a sports boot part comprising the production of a first layer (4; 5) by means of injection and the fixing of a second layer (5; 4) against this first layer (4; 5), wherein one or more recesses (9) are produced on one of the layers (4; 5) in order to form a deformation axis (8), the overall hardness of the part of the boot is substantially reduced along said axis (8), the other layer (5) guarantying the leaktightness at the said recesses (9).
EP05425031A 2005-01-26 2005-01-26 Bi-layered part of a sports shoe with deformation zone Expired - Fee Related EP1685771B1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05425031A EP1685771B1 (en) 2005-01-26 2005-01-26 Bi-layered part of a sports shoe with deformation zone
DE602005006090T DE602005006090T9 (en) 2005-01-26 2005-01-26 Two-layer part of a sports shoe with deformation zone
US11/338,530 US7716854B2 (en) 2005-01-26 2006-01-24 Two-layer sports boot part with deformation zone

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05425031A EP1685771B1 (en) 2005-01-26 2005-01-26 Bi-layered part of a sports shoe with deformation zone

Publications (2)

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EP1685771A1 EP1685771A1 (en) 2006-08-02
EP1685771B1 true EP1685771B1 (en) 2008-04-16

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DE (1) DE602005006090T9 (en)

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Also Published As

Publication number Publication date
DE602005006090D1 (en) 2008-05-29
EP1685771A1 (en) 2006-08-02
DE602005006090T2 (en) 2009-06-04
DE602005006090T9 (en) 2009-09-10
US20060162192A1 (en) 2006-07-27
US7716854B2 (en) 2010-05-18

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