EP2132998A1 - Innerboot for a sports shoe - Google Patents

Innerboot for a sports shoe Download PDF

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Publication number
EP2132998A1
EP2132998A1 EP08425417A EP08425417A EP2132998A1 EP 2132998 A1 EP2132998 A1 EP 2132998A1 EP 08425417 A EP08425417 A EP 08425417A EP 08425417 A EP08425417 A EP 08425417A EP 2132998 A1 EP2132998 A1 EP 2132998A1
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EP
European Patent Office
Prior art keywords
edge
boot
liner
elements
wall
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.)
Withdrawn
Application number
EP08425417A
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German (de)
French (fr)
Inventor
Roberto Perizzolo
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.)
Rossignol Lange SRL
Original Assignee
Rossignol Lange SRL
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 Rossignol Lange SRL filed Critical Rossignol Lange SRL
Priority to EP08425417A priority Critical patent/EP2132998A1/en
Priority to US12/481,170 priority patent/US20090307930A1/en
Publication of EP2132998A1 publication Critical patent/EP2132998A1/en
Withdrawn legal-status Critical Current

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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
    • A43B5/0405—Linings, paddings or insertions; Inner boots
    • 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
    • A43B9/00—Footwear characterised by the assembling of the individual parts
    • A43B9/02—Footwear stitched or nailed through

Definitions

  • the invention relates to a removable boot for sports shoes, particularly suitable for shoes for boards such as skiing, surfing or skating shoes. It also relates to the method of manufacturing the upper of such a shoe and the method of manufacturing such a shoe.
  • the slippers for ski boots of the state of the art comprise a rod or uppers extending vertically above a horizontal sole.
  • a first method of manufacturing such a liner is to make a flat blank of a plastic material and then to shape it to obtain a three-dimensional vamp.
  • a comfort foam is generally added to the inner portion of the vamp wall and a sole is secured in its lower region to form the final liner.
  • This method has the advantage of great simplicity and low cost. Its disadvantage is that it forms a slipper structure uniform little suited to the anatomy of the foot.
  • the plastic material forming the boot is necessarily rigid so that the boot as a whole retains a satisfactory performance when donning. However, this rigidity is useless, degrades the comfort of the boot in certain areas such as the front part of the upper.
  • a “composite” slipper comprising the combination of several distinct foam elements and different properties on the flat blank of the upper, in order to obtain a more precise result. comfortable because closer to the anatomy of the foot.
  • These different foam elements can be juxtaposed within the wall of the liner and / or Bunk.
  • rigid wall elements may be superimposed on the rest of the wall, on its outer face, and fixed by any known means, to stiffen the wall in certain areas.
  • a rigid element is added in the rear part of the boot, especially around the heel, to enable it to achieve a satisfactory performance when donning.
  • a first disadvantage of such a solution is its high cost because it requires the superposition of several layers of materials which leads to a significant consumption of materials and the fact of shaping all the independent parts that constitute the liner.
  • a second disadvantage is that it does not allow to obtain a very satisfactory structure, the positioning of the various foam elements is for example very imprecise.
  • a final disadvantage is that it causes extra thicknesses in the superposition of certain elements, which can lead to painful hard points at the boundaries between several superimposed rigid elements.
  • an object of the present invention is to provide a removable shoe solution for comfortable sports shoe and whose manufacturing process remains economical.
  • the removable liner for a sports shoe has a wall comprising a rear portion that is stiffer than a front portion, characterized in that the wall of the liner comprises at least one layer comprising in its rigid rear part a first element juxtaposed to a second, softer element of its part front, these two elements being fixed together by a seam edge to edge
  • the invention relates to the structure of the wall of a shoe.
  • the outside surface of the end surface of the liner in contact with the outside, intended to come into contact with the inner face of a rigid shoe shank in which the removable liner will be inserted, in opposition to the inner surface of the liner.
  • slipper which is the surface intended to come into contact with the foot of a user.
  • the liner wall seen in cross section that is to say in a direction perpendicular to the surface of the liner and from the outside to the inside of the liner, generally consists of several elements thus forming several layers superimposed and fixed together inseparably. We will therefore use the term "superposition" for these elements positioned one on the other in a direction transverse to the wall of the liner.
  • the wall of the liner seen in section through a plane parallel to the wall of the liner, perpendicular to a transverse sectional plane shows the structure of a layer of the wall of the liner, within a certain thickness its wall, and possibly to show different elements positioned juxtaposed in this same layer of the wall of the liner.
  • Juxtaposition for these different elements positioned within the same layer.
  • two distinct elements of the wall of a liner can be both superimposed in some parts of the wall of the liner and juxtaposed in other parts of the liner.
  • the upper of the comfort liner comprises a wall comprising a greater rigidity at the level of its rear part with respect to its front part, in order to provide both a good support at the heel of the user, and a better comfort at the level of the anterior part of the foot.
  • This property is obtained by producing at least one layer of the wall of the upper comprising two juxtaposed elements of different rigidity fixed together by an edge-to-edge stitching.
  • This edge-to-edge seam allows these two elements to be perfectly juxtaposed and not superimposed, which has the advantage of avoiding the hard points that can be painful that would be obtained if these two elements were partially superimposed on their attachment.
  • a sealing element for example adhesive, may be disposed on the inner or outer face of the layer comprising the edge-to-edge seam so as to improve the waterproofness of the slipper at this edge-to-edge stitching.
  • the figure 1 illustrates such a boot, thus comprising a upper 1 and a sole 2, the upper comprising a rear portion 3 more rigid than a front portion 4.
  • the wall of the upper comprises an outer layer in contact with the exterior comprising a first element in its rear part 3 and a second element more flexible in its front part 4, these two elements being juxtaposed in the outer layer of the wall of the liner and connected by an edge-to-edge seam.
  • this wall of the upper of the liner can be supplemented by other superimposed layers comprising other elements such as a foam and an inner comfort fabric, according to any technique of the state of the art.
  • the border comprising the edge-to-edge stitching between the two rear and front portions 4 may form a substantially vertical line, as illustrated in FIG. figure 1 , or alternatively, any other form, possibly curved, such as that illustrated for example in FIG. figure 2 .
  • These different embodiments represent different surfaces of rigid material in the rear part of the heel which correspond to different compromises between the comfort of the boot and its performance. Indeed, the comfort is more important if the surface of the front part is more flexible flexible as possible. In contrast, the performance of the slipper for the practice of sport is greater if the surface of the rear part is more rigid rigid as possible because the wall is more rigid able to transmit the forces exerted by its user. Thus, it is possible to imagine a beginner's boot in which the surface of the rear part would be very small, in order to privilege comfort, and at the opposite extreme, a slipper of competition in which the surface of the rear part would be very important to achieve the best possible performance.
  • FIGS. 3 and 4 illustrate a method of manufacturing a boot upper according to an advantageous embodiment of the invention.
  • the first step is to cut a flat blank 11 as schematically illustrated on the figure 3 , whose shape allows to obtain, after shaping according to a known method of the state of the art, the desired three-dimensional upper.
  • the formation of this flat blank 11 comprises the combination of three elements by two edge-to-edge seams 15, a central element 13 and two lateral elements 14, this central element 13 having greater rigidity than the two lateral parts 14
  • This blank 11 thus obtained is intended to form an outer layer of the wall of the upper. It may optionally be covered at least partially by another outer layer later, in which case it no longer forms the outer layer of the wall.
  • the seam 15 is visible from the outside of the liner and the two elements 13, 14 fixed between they by this seam can be chosen different color to increase the aesthetic character of the set obtained and highlight the technical function implemented by this structure of the shoe.
  • the various elements 13, 14 forming this blank 11 may be plastic materials, for example PVC, of different rigidity.
  • the most rigid element 13 may have a thickness between 3 and 3.5 millimeters, be in nylon coupled with polyethylene and EVA, having a rigidity represented by a Shore A value close to 50, preferably between 40 and 70 Shore A.
  • this a more rigid rear member will advantageously have a large thickness, between 2.5 and 4 millimeters, while the softer member 14 will have a usual structure of smaller thickness, for example about 1.5 millimeters.
  • the more rigid material advantageously has sufficient rigidity to fulfill the technical function of holding the liner, that is to say, allow it to maintain its vertical hold during his boot, phase during which the foot of the user tends to crush his structure down.
  • These elements have a thickness of several millimeters and their association by edge-to-edge stitching avoids the hard spots that could cause their attachment by other types of stitching, such as a seam requiring their superposition at least on a band hosting the seam.
  • the second stage of manufacture of the upper consists of the addition of a layer of superimposed foam comfort, intended to lie in the finished liner, in direct or indirect contact, via a fabric inside, with the foot of a user.
  • this foam layer is obtained by a first sub-step of bonding at least one agglomerated type foam, obtained by recycling and grouping different foam elements.
  • the foam can occupy almost the entire surface of the plane blank, either lie superimposed on the central element 13 or extend over all the elements 13, 14.
  • several distinct elements of foam can be fixed on the blank 11, superimposed or juxtaposed.
  • the added foam undergoes a second machining sub-step after its fixation, for example by milling or grinding, in order to obtain different thicknesses according to different areas of the blank 11.
  • This step of machining the foam after it has been fixed on a flat element makes it possible to define with great precision the different zones of different thickness.
  • the layer (s) of foam may be formed by an injection method or by thermocompression.
  • an inner fabric also called inner lining
  • inner lining can be superimposed on the foam to form the future inner layer of the liner, intended to come into contact with the foot of the user.
  • a third step of the method finally consists in shaping the flat blank 11 to give it its three-dimensional shape.
  • the two lateral elements 14 are for example connected to form the front portion 4 of the three-dimensional upper, softer than its rear portion 3.
  • the side corresponding to the inner part of the foot, facing the other foot undergoes more effort than the other side and it is possible to opt for a more rigid material surface on this wall internal side only on the outer side wall, which results in a seam edge to edge generally further forward on the inner wall of the liner.

Abstract

The bootee has a wall including an outer layer comprising a rear portion (3) that is more rigid than a front portion (4). A rigid element of the rear portion is juxtaposed to another rigid element of the front portion, where the two elements are fixed together by an edge-to-edge seam (5). The elements fixed together by the seam are plastic materials of different stiffness. The thickness of the former rigid element of the rear portion is between 2.5 and 4 millimeters. Independent claims are also included for the following: (1) a method for manufacturing a vamp of a bootee of a sports shoe (2) a method for fabricating a bootee.

Description

L'invention concerne un chausson amovible pour chaussure de sport, particulièrement adapté pour les chaussures pour planche de glisse telle que ski, surf ou pour les chaussures de patinage. Elle concerne aussi le procédé de fabrication de l'empeigne d'un tel chausson et le procédé de fabrication d'un tel chausson.The invention relates to a removable boot for sports shoes, particularly suitable for shoes for boards such as skiing, surfing or skating shoes. It also relates to the method of manufacturing the upper of such a shoe and the method of manufacturing such a shoe.

Les chaussons pour chaussures de ski de l'état de la technique comprennent une tige ou empeigne s'étendant verticalement au-dessus d'une semelle horizontale. Un premier procédé de fabrication d'un tel chausson consiste à réaliser une ébauche plate en un matériau plastique puis à la mettre en forme pour obtenir une empeigne tridimensionnelle. Une mousse de confort est en général ajoutée dans la partie intérieure de la paroi de l'empeigne et une semelle est fixée dans sa zone inférieure pour former le chausson final. Ce procédé présente l'avantage d'une grande simplicité et d'un coût réduit. Son inconvénient est qu'il forme un chausson de structure uniforme peu adaptée à l'anatomie du pied. De plus, le matériau plastique formant le chausson est obligatoirement rigide pour que le chausson dans son ensemble conserve une tenue satisfaisante lors de son chaussage. Or, cette rigidité est inutile, dégrade le confort du chausson dans certaines zones comme la partie avant de l'empeigne.The slippers for ski boots of the state of the art comprise a rod or uppers extending vertically above a horizontal sole. A first method of manufacturing such a liner is to make a flat blank of a plastic material and then to shape it to obtain a three-dimensional vamp. A comfort foam is generally added to the inner portion of the vamp wall and a sole is secured in its lower region to form the final liner. This method has the advantage of great simplicity and low cost. Its disadvantage is that it forms a slipper structure uniform little suited to the anatomy of the foot. In addition, the plastic material forming the boot is necessarily rigid so that the boot as a whole retains a satisfactory performance when donning. However, this rigidity is useless, degrades the comfort of the boot in certain areas such as the front part of the upper.

Pour pallier aux inconvénients précédents, un autre procédé consiste à fabriquer un chausson dit « composite », comprenant l'association de plusieurs éléments de mousse distincts et de propriétés différentes sur l'ébauche plate de l'empeigne, afin d'obtenir un résultat plus confortable car plus proche de l'anatomie du pied. Ces différents éléments de mousse peuvent être juxtaposés au sein de la paroi du chausson et/ou superposés. De manière similaire, des éléments de paroi rigide peuvent être superposés sur le reste de la paroi, sur sa face extérieure, et fixés par tout moyen connu, afin de rigidifier la paroi dans certaines zones. En général, un élément rigide est ajouté dans la partie arrière du chausson, notamment autour du talon, pour lui permettre d'atteindre une tenue satisfaisante lors de son chaussage. Un premier inconvénient d'une telle solution est son coût élevé puisqu'elle nécessite la superposition de plusieurs couches de matériaux qui entraîne une consommation importante de matériaux et du fait du façonnage de toutes les parties indépendantes qui constituent le chausson. Un second inconvénient est qu'elle ne permet pas d'obtenir une structure très satisfaisante, le positionnement des différents éléments de mousse est par exemple très imprécis. Enfin, un dernier inconvénient est qu'elle entraîne des surépaisseurs au niveau de la superposition de certains éléments, ce qui peut entraîner des points durs douloureux au niveau des frontières entre plusieurs éléments rigides superposés.To overcome the above drawbacks, another method consists in manufacturing a "composite" slipper, comprising the combination of several distinct foam elements and different properties on the flat blank of the upper, in order to obtain a more precise result. comfortable because closer to the anatomy of the foot. These different foam elements can be juxtaposed within the wall of the liner and / or Bunk. Similarly, rigid wall elements may be superimposed on the rest of the wall, on its outer face, and fixed by any known means, to stiffen the wall in certain areas. In general, a rigid element is added in the rear part of the boot, especially around the heel, to enable it to achieve a satisfactory performance when donning. A first disadvantage of such a solution is its high cost because it requires the superposition of several layers of materials which leads to a significant consumption of materials and the fact of shaping all the independent parts that constitute the liner. A second disadvantage is that it does not allow to obtain a very satisfactory structure, the positioning of the various foam elements is for example very imprecise. Finally, a final disadvantage is that it causes extra thicknesses in the superposition of certain elements, which can lead to painful hard points at the boundaries between several superimposed rigid elements.

Ainsi, il existe un besoin d'une nouvelle structure de chausson pour chaussure de sport qui ne présente pas les inconvénients précédents.Thus, there is a need for a new slipper structure for a sports shoe that does not have the above disadvantages.

Plus précisément, un objet de la présente invention consiste à proposer une solution de chausson amovible pour chaussure de sport confortable et dont le procédé de fabrication reste économique.More specifically, an object of the present invention is to provide a removable shoe solution for comfortable sports shoe and whose manufacturing process remains economical.

Selon le concept de l'invention, le chausson amovible pour chaussure de sport présente une paroi comprenant une partie arrière plus rigide qu'une partie avant, caractérisé en ce que la paroi du chausson comprend au moins une couche comprenant dans sa partie arrière plus rigide un premier élément juxtaposé à un second élément plus souple de sa partie avant, ces deux éléments étant fixés entre eux par une couture bord à bordAccording to the concept of the invention, the removable liner for a sports shoe has a wall comprising a rear portion that is stiffer than a front portion, characterized in that the wall of the liner comprises at least one layer comprising in its rigid rear part a first element juxtaposed to a second, softer element of its part front, these two elements being fixed together by a seam edge to edge

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 d'un mode d'exécution particulier fait à titre non-limitatif en relation avec les figures jointes parmi lesquelles :

  • La figure 1 est une vue en perspective de côté d'un chausson selon un mode d'exécution de l'invention;
  • la figure 2 est une vue en perspective de côté d'un chausson selon une variante du mode d'exécution de l'invention;
  • la figure 3 représente une ébauche plate selon une étape de fabrication d'une empeigne d'un chausson selon le mode d'exécution de l'invention;
  • la figure 4 représente l'ébauche plate recouverte d'une mousse selon une autre étape de fabrication d'une empeigne d'un chausson selon le mode d'exécution de l'invention.
These objects, features and advantages of the present invention will be set forth in detail in the following description of a particular embodiment made in a non-limiting manner in relation to the appended figures among which:
  • The figure 1 is a side perspective view of a liner according to an embodiment of the invention;
  • the figure 2 is a side perspective view of a liner according to a variant of the embodiment of the invention;
  • the figure 3 represents a flat blank according to a step of manufacturing a vamp of a liner according to the embodiment of the invention;
  • the figure 4 represents the flat blank covered with a foam according to another step of manufacturing a vamp of a liner according to the embodiment of the invention.

L'invention porte sur la structure de la paroi d'un chausson. Nous appellerons face extérieure la surface extrême de la paroi du chausson en contact avec l'extérieur, destinée à venir en contact avec la face intérieure d'une tige rigide de chaussure dans laquelle le chausson amovible sera inséré, en opposition avec la surface intérieure du chausson qui est la surface destinée à venir en contact avec le pied d'un utilisateur. De plus, la paroi du chausson vue en coupe transversale, c'est-à-dire selon une direction perpendiculaire à la surface du chausson et allant de l'extérieur vers l'intérieur du chausson, se compose en général de plusieurs éléments formant ainsi plusieurs couches superposées et fixées ensemble de manière indissociable. Nous utiliserons donc le terme de « superposition » pour ces éléments positionnés l'un sur l'autre dans une direction transversale à la paroi du chausson. De plus, la paroi du chausson vue en coupe par un plan parallèle à la paroi du chausson, perpendiculaire à un plan de coupe transversal, permet de montrer la structure d'une couche de la paroi du chausson, au sein d'une certaine épaisseur de sa paroi, et éventuellement de montrer différents éléments positionnés de manière juxtaposée dans cette même couche de la paroi du chausson. Nous utiliserons donc le terme de « juxtaposition » pour ces différents éléments positionnés au sein d'une même couche. En remarque, deux éléments distincts de la paroi d'un chausson peuvent être à la fois superposés dans certaines parties de la paroi du chausson et juxtaposés dans d'autres parties du chausson. Ces définitions vont aider à la clarté de la description suivante de l'invention.The invention relates to the structure of the wall of a shoe. We will call the outside surface of the end surface of the liner in contact with the outside, intended to come into contact with the inner face of a rigid shoe shank in which the removable liner will be inserted, in opposition to the inner surface of the liner. slipper which is the surface intended to come into contact with the foot of a user. In addition, the liner wall seen in cross section, that is to say in a direction perpendicular to the surface of the liner and from the outside to the inside of the liner, generally consists of several elements thus forming several layers superimposed and fixed together inseparably. We will therefore use the term "superposition" for these elements positioned one on the other in a direction transverse to the wall of the liner. In addition, the wall of the liner seen in section through a plane parallel to the wall of the liner, perpendicular to a transverse sectional plane, shows the structure of a layer of the wall of the liner, within a certain thickness its wall, and possibly to show different elements positioned juxtaposed in this same layer of the wall of the liner. We will therefore use the term "juxtaposition" for these different elements positioned within the same layer. In note, two distinct elements of the wall of a liner can be both superimposed in some parts of the wall of the liner and juxtaposed in other parts of the liner. These definitions will help to clarify the following description of the invention.

Selon un élément essentiel de l'invention, l'empeigne du chausson de confort comprend une paroi comprenant une rigidité supérieure au niveau de sa partie arrière par rapport à sa partie avant, afin d'apporter à la fois un bon maintien au niveau du talon de l'utilisateur, et un meilleur confort au niveau de la partie antérieure du pied. Cette propriété est obtenue par la réalisation d'au moins une couche de la paroi de l'empeigne comprenant deux éléments juxtaposés de rigidité différente fixés entre eux par une couture bord à bord. Cette couture bord à bord permet à ces deux éléments d'être parfaitement juxtaposés et non superposés, ce qui présente l'avantage d'éviter les points durs pouvant être douloureux qui seraient obtenu si ces deux éléments étaient partiellement superposés au niveau de leur fixation. Selon une variante possible d'exécution, un élément d'étanchéité, par exemple adhésif, peut être disposé sur la face intérieure ou extérieure de la couche comprenant la couture bord à bord de sorte d'améliorer l'étanchéité du chausson au niveau de cette couture bord à bord.According to an essential element of the invention, the upper of the comfort liner comprises a wall comprising a greater rigidity at the level of its rear part with respect to its front part, in order to provide both a good support at the heel of the user, and a better comfort at the level of the anterior part of the foot. This property is obtained by producing at least one layer of the wall of the upper comprising two juxtaposed elements of different rigidity fixed together by an edge-to-edge stitching. This edge-to-edge seam allows these two elements to be perfectly juxtaposed and not superimposed, which has the advantage of avoiding the hard points that can be painful that would be obtained if these two elements were partially superimposed on their attachment. According to a possible variant embodiment, a sealing element, for example adhesive, may be disposed on the inner or outer face of the layer comprising the edge-to-edge seam so as to improve the waterproofness of the slipper at this edge-to-edge stitching.

La figure 1 illustre un tel chausson, comprenant donc une empeigne 1 et une semelle 2, l'empeigne comprenant une partie arrière 3 plus rigide qu'une partie avant 4. Pour cela, la paroi de l'empeigne comprend une couche extérieure en contact avec l'extérieur comprenant un premier élément dans sa partie arrière 3 et un second élément plus souple dans sa partie avant 4, ces deux éléments étant juxtaposés dans la couche extérieure de la paroi du chausson et reliés par une couture 5 bord à bord. Ensuite, cette paroi de l'empeigne du chausson peut être complétée par d'autres couches superposées comprenant d'autres éléments comme une mousse et un tissu de confort intérieur, selon toute technique de l'état de la technique.The figure 1 illustrates such a boot, thus comprising a upper 1 and a sole 2, the upper comprising a rear portion 3 more rigid than a front portion 4. For this, the wall of the upper comprises an outer layer in contact with the exterior comprising a first element in its rear part 3 and a second element more flexible in its front part 4, these two elements being juxtaposed in the outer layer of the wall of the liner and connected by an edge-to-edge seam. Then, this wall of the upper of the liner can be supplemented by other superimposed layers comprising other elements such as a foam and an inner comfort fabric, according to any technique of the state of the art.

La frontière comprenant la couture bord à bord 5 entre les deux parties arrière 3 et avant 4 peut former une ligne sensiblement verticale, comme illustré sur la figure 1, ou présenter en variante toute autre forme, éventuellement courbée, comme celle par exemple illustrée sur la figure 2. Ces différentes variantes de réalisation représentent des surfaces différentes de matériau rigide dans la partie arrière du talon qui correspondent à des compromis différents entre le confort du chausson et sa performance. En effet, le confort est plus important si la surface de la partie avant plus souple est la plus grande possible. En revanche, la performance du chausson pour la pratique du sport est plus importante si la surface de la partie arrière plus rigide est la plus grande possible puisque la paroi plus rigide est plus apte à la transmission des efforts exercés par son utilisateur. Ainsi, il est possible d'imaginer un chausson pour débutant dans lequel la surface de la partie arrière serait très faible, afin de privilégier le confort, et à l'extrême opposée, un chausson de compétition dans lequel la surface de la partie arrière serait très importante pour atteindre la meilleure performance possible.The border comprising the edge-to-edge stitching between the two rear and front portions 4 may form a substantially vertical line, as illustrated in FIG. figure 1 , or alternatively, any other form, possibly curved, such as that illustrated for example in FIG. figure 2 . These different embodiments represent different surfaces of rigid material in the rear part of the heel which correspond to different compromises between the comfort of the boot and its performance. Indeed, the comfort is more important if the surface of the front part is more flexible flexible as possible. In contrast, the performance of the slipper for the practice of sport is greater if the surface of the rear part is more rigid rigid as possible because the wall is more rigid able to transmit the forces exerted by its user. Thus, it is possible to imagine a beginner's boot in which the surface of the rear part would be very small, in order to privilege comfort, and at the opposite extreme, a slipper of competition in which the surface of the rear part would be very important to achieve the best possible performance.

Les figures 3 et 4 illustrent un procédé de fabrication d'une empeigne de chausson selon un mode d'exécution avantageux de l'invention.The Figures 3 and 4 illustrate a method of manufacturing a boot upper according to an advantageous embodiment of the invention.

La première étape consiste à découper une ébauche plate 11 telle que schématiquement illustrée sur la figure 3, dont la forme permet d'obtenir, après sa mise en forme selon une méthode connue de l'état de la technique, l'empeigne tridimensionnelle recherchée. Selon l'invention, la formation de cette ébauche plate 11 comprend l'association de trois éléments par deux coutures bord à bord 15, un élément central 13 et deux éléments latéraux 14, cet élément central 13 ayant une rigidité supérieure aux deux parties latérales 14. Cette ébauche 11 ainsi obtenue est destinée à former une couche extérieure de la paroi de l'empeigne. Elle peut éventuellement être recouverte au moins partiellement par une autre couche extérieure par la suite, auquel cas elle ne forme plus la couche extérieure de la paroi.The first step is to cut a flat blank 11 as schematically illustrated on the figure 3 , whose shape allows to obtain, after shaping according to a known method of the state of the art, the desired three-dimensional upper. According to the invention, the formation of this flat blank 11 comprises the combination of three elements by two edge-to-edge seams 15, a central element 13 and two lateral elements 14, this central element 13 having greater rigidity than the two lateral parts 14 This blank 11 thus obtained is intended to form an outer layer of the wall of the upper. It may optionally be covered at least partially by another outer layer later, in which case it no longer forms the outer layer of the wall.

Dans le cas où les deux éléments de rigidité différente reliés par une couture bord à bord se retrouve sur la couche extérieure de la paroi de la chaussure, la couture 15 est visible depuis l'extérieur du chausson et les deux éléments 13, 14 fixés entre eux par cette couture peuvent être choisis de couleur différente pour augmenter le caractère esthétique de l'ensemble obtenu et mettre en valeur la fonction technique mise en oeuvre par cette structure du chausson.In the case where the two elements of different rigidity connected by a seam edge to edge is found on the outer layer of the wall of the shoe, the seam 15 is visible from the outside of the liner and the two elements 13, 14 fixed between they by this seam can be chosen different color to increase the aesthetic character of the set obtained and highlight the technical function implemented by this structure of the shoe.

Les différents éléments 13, 14 formant cette ébauche 11 peuvent être des matériaux plastiques, par exemple du PVC, de rigidité différente. A titre d'exemple, l'élément le plus rigide 13 peut présenter une épaisseur comprise entre 3 et 3,5 millimètres, se trouver en nylon couplé avec du polyéthylène et de l'EVA, présentant une rigidité représentée par un shore A de valeur proche de 50, de préférence comprise entre 40 et 70 Shore A. Ainsi, cet élément arrière plus rigide présentera avantageusement une épaisseur importante, comprise entre 2,5 et 4 millimètres, alors que l'élément plus souple 14 présentera une structure habituelle, de plus petite épaisseur, par exemple d'environ 1,5 millimètre. Le matériau plus rigide possède avantageusement une rigidité suffisante pour remplir la fonction technique de tenue du chausson, c'est-à-dire lui permettre de conserver sa tenue verticale lors de son chaussage, phase durant laquelle le pied de l'utilisateur a tendance à écraser sa structure vers le bas. Ces éléments possèdent donc une épaisseur de plusieurs millimètres et leur association par une couture bord à bord évite les points durs que pourrait causer leur fixation par d'autres types de couture, comme une couture nécessitant leur superposition au moins sur une bande accueillant la couture.The various elements 13, 14 forming this blank 11 may be plastic materials, for example PVC, of different rigidity. By way of example, the most rigid element 13 may have a thickness between 3 and 3.5 millimeters, be in nylon coupled with polyethylene and EVA, having a rigidity represented by a Shore A value close to 50, preferably between 40 and 70 Shore A. Thus, this a more rigid rear member will advantageously have a large thickness, between 2.5 and 4 millimeters, while the softer member 14 will have a usual structure of smaller thickness, for example about 1.5 millimeters. The more rigid material advantageously has sufficient rigidity to fulfill the technical function of holding the liner, that is to say, allow it to maintain its vertical hold during his boot, phase during which the foot of the user tends to crush his structure down. These elements have a thickness of several millimeters and their association by edge-to-edge stitching avoids the hard spots that could cause their attachment by other types of stitching, such as a seam requiring their superposition at least on a band hosting the seam.

La seconde étape de fabrication de l'empeigne consiste en l'ajout d'une couche de confort superposée en mousse, destinée à se trouver vers l'intérieur du chausson terminé, au contact direct ou indirect, par l'intermédiaire d'un tissu intérieur, avec le pied d'un utilisateur.The second stage of manufacture of the upper consists of the addition of a layer of superimposed foam comfort, intended to lie in the finished liner, in direct or indirect contact, via a fabric inside, with the foot of a user.

Selon le mode d'exécution avantageux de l'invention, cette couche de mousse est obtenue par une première sous-étape de collage d'au moins une mousse de type agglomérée, obtenue par recyclage et regroupement de différents éléments de mousse. La mousse peut occuper presque toute la surface de l'ébauche plane, soit se trouver superposée à l'élément central 13 soit s'étendre sur tous les éléments 13, 14. En variante, plusieurs éléments distincts de mousse peuvent être fixés sur l'ébauche 11, de manière superposée ou juxtaposée. Ensuite, la mousse ajoutée subit une seconde sous-étape d'usinage après sa fixation, par exemple par fraisage ou meulage, afin d'obtenir des épaisseurs différentes selon différentes zones de l'ébauche 11. Cette étape d'usinage de la mousse après sa fixation sur un élément plat permet de définir avec une grande précision les différentes zones d'épaisseur différente de la mousse, beaucoup plus qu'avec la méthode de l'état de la technique consistant à coller des éléments distincts dont la géométrie finale a été préalablement réalisée séparément. Ainsi, une ébauche ainsi obtenue est illustrée sur la figure 4, qui montre des zones de mousse 16 de grande épaisseur, au sein desquelles sont aménagées des zones légèrement moins épaisses en forme de disque plat 17, correspondant aux emplacements des deux malléoles de l'utilisateur. Ensuite, l'épaisseur de mousse décroît de manière continue en allant vers la périphérie de l'ébauche 11.According to the advantageous embodiment of the invention, this foam layer is obtained by a first sub-step of bonding at least one agglomerated type foam, obtained by recycling and grouping different foam elements. The foam can occupy almost the entire surface of the plane blank, either lie superimposed on the central element 13 or extend over all the elements 13, 14. Alternatively, several distinct elements of foam can be fixed on the blank 11, superimposed or juxtaposed. Then, the added foam undergoes a second machining sub-step after its fixation, for example by milling or grinding, in order to obtain different thicknesses according to different areas of the blank 11. This step of machining the foam after it has been fixed on a flat element makes it possible to define with great precision the different zones of different thickness. foam, much more than with the method of the state of the art of sticking separate elements whose final geometry was previously performed separately. Thus, a draft thus obtained is illustrated on the figure 4 which shows areas of foam 16 of great thickness, within which are arranged slightly thinner areas in the form of flat disk 17, corresponding to the locations of the two malleoli of the user. Then, the foam thickness decreases continuously towards the periphery of the blank 11.

En variante, la ou les couche(s) de mousse pourrai(en)t être formée(s) par un procédé d'injection ou par thermocompression.Alternatively, the layer (s) of foam may be formed by an injection method or by thermocompression.

Enfin, un tissu intérieur, aussi appelé lining intérieur, peut être superposé sur la mousse pour former la future couche intérieure du chausson, destinée à venir en contact avec le pied de l'utilisateur.Finally, an inner fabric, also called inner lining, can be superimposed on the foam to form the future inner layer of the liner, intended to come into contact with the foot of the user.

Une troisième étape du procédé consiste enfin à mettre en forme l'ébauche plate 11 pour lui donner sa forme tridimensionnelle. Les deux éléments latéraux 14 sont par exemple reliés pour former la partie avant 4 de l'empeigne tridimensionnelle, plus souple que sa partie arrière 3.A third step of the method finally consists in shaping the flat blank 11 to give it its three-dimensional shape. The two lateral elements 14 are for example connected to form the front portion 4 of the three-dimensional upper, softer than its rear portion 3.

Enfin, une semelle 2 est fixée à cette empeigne terminée pour obtenir un chausson amovible de chaussure de sport.Finally, a sole 2 is attached to this finished upper to obtain a removable boot of sports shoe.

Bien sûr, des variantes de réalisation peuvent rester dans le concept de l'invention. Ainsi, il est possible d'imaginer une structure de la paroi du chausson comprenant plus de deux ou trois éléments juxtaposés sur une couche de la paroi du chausson et reliés par des coutures bord à bord. De plus, la couture bord à bord entre ces éléments de rigidité différente peut être obtenue au sein d'une autre couche de la paroi de l'empeigne que la couche extérieure. Les coutures bord à bord des deux côtés latéraux du chausson peuvent présenter une géométrie symétrique ou dissymétrique. En effet, le côté correspondant à la partie interne du pied, faisant face à l'autre pied, subit plus d'effort que l'autre côté et il est envisageable d'opter pour une surface de matériau plus rigide plus importante sur cette paroi latérale interne que sur la paroi latérale externe, ce qui se traduit par une couture bord à bord globalement plus en avant sur la paroi interne du chausson.Of course, alternative embodiments may remain in the concept of the invention. Thus, it is possible to imagine a structure of the wall of the slipper comprising more than two or three elements juxtaposed on a layer of the wall of the slipper and connected by seams edge to edge. In addition, the edge-to-edge seam between these elements of different rigidity can be obtained within another layer of the wall of the upper than the outer layer. Seams edge to edge on both sides of the liner may have a symmetrical or asymmetrical geometry. Indeed, the side corresponding to the inner part of the foot, facing the other foot, undergoes more effort than the other side and it is possible to opt for a more rigid material surface on this wall internal side only on the outer side wall, which results in a seam edge to edge generally further forward on the inner wall of the liner.

Claims (12)

Chausson amovible de chaussure de sport dont la paroi comprend une partie arrière (3) plus rigide qu'une partie avant (4), caractérisé en ce que la paroi du chausson comprend au moins une couche comprenant dans sa partie arrière (3) plus rigide un premier élément juxtaposé à un second élément plus souple de sa partie avant (4), ces deux éléments étant fixés entre eux par une couture bord à bord (5).Removable sports shoe liner whose wall comprises a rear part (3) more rigid than a front part (4) , characterized in that the wall of the liner comprises at least one layer comprising in its rear part (3) more rigid a first element juxtaposed with a second softer element of its front part (4), these two elements being fixed to each other by an edge-to-edge seam (5). Chausson de chaussure de sport selon la revendication 1, caractérisé en ce que la couche de la paroi du chausson comprenant les deux éléments fixés entre eux par une couture bord à bord (5) est la couche extérieure de la paroi du chausson.Sports shoe liner according to claim 1, characterized in that the layer of the wall of the liner comprising the two elements fixed together by an edge-to-edge seam (5) is the outer layer of the wall of the liner. Chausson de chaussure de sport selon la revendication 1 ou 2, caractérisé en ce que les deux éléments fixés entre eux par une couture bord à bord sont deux matériaux plastiques de rigidité différente.Sports boot slipper according to claim 1 or 2, characterized in that the two elements which are fastened together by an edge to edge seam are two plastic materials of different rigidity. Chausson de chaussure de sport selon l'une des revendications précédentes, caractérisé en ce que le premier élément plus rigide de la partie arrière présente une épaisseur importante comprise entre 2,5 et 4 millimètres.Sports shoe boot according to one of the preceding claims, characterized in that the first, more rigid element of the rear part has a substantial thickness of between 2.5 and 4 millimeters. Chausson de chaussure de sport selon la revendication précédente, caractérisé en ce que le second élément plus souple de la partie avant présente une épaisseur inférieure à 2 millimètres.Sports shoe boot according to the preceding claim, characterized in that the second softer element of the front portion has a thickness of less than 2 millimeters. Chausson de chaussure de sport selon l'une des revendications précédentes, caractérisé en ce que la couture (5) bord à bord entre les deux éléments est sensiblement verticale ou présente des courbures.Sports shoe boot according to one of the preceding claims, characterized in that the edge-to-edge seam (5) between the two elements is substantially vertical or has curvatures. Chausson de chaussure de sport selon l'une des revendications précédentes, caractérisé en ce que la paroi du chausson comprend de plus une couche de mousse usinée superposée sur au moins une zone d'au moins un des deux éléments juxtaposés de la paroi du chausson fixés entre eux par une couture bord à bord (5).Sports shoe boot according to one of the preceding claims, characterized in that the wall of the liner further comprises a layer of machined foam superimposed on at least one area of at least one of the two juxtaposed elements of the wall of the liner fixed between them by an edge-to-edge seam (5). Procédé de fabrication d'une empeigne de chausson amovible de chaussure de sport selon l'une des revendications précédentes, caractérisé en ce qu'il comprend une étape consistant à former une ébauche plane (11) comprenant la fixation par une couture bord à bord (15) d'au moins deux éléments distincts (13, 14) de rigidité différente, l'élément plus rigide (13) étant destiné à être positionné dans la partie arrière de l'empeigne.A method of manufacturing a removable athletic shoe boot upper according to one of the preceding claims, characterized in that it comprises a step of forming a flat blank (11) comprising fastening by edge-to-edge sewing ( 15) of at least two distinct elements (13, 14) of different rigidity, the more rigid element (13) being intended to be positioned in the rear part of the upper. Procédé de fabrication d'une empeigne (1) de chausson amovible de chaussure de sport selon la revendication précédente, caractérisé en ce qu'il comprend la formation d'une ébauche plane destinée à former une couche extérieure de l'empeigne, cette ébauche plane comprenant un élément central (13) destiné à former la partie arrière de l'empeigne du chausson et deux éléments latéraux (14) plus souples destinés à former la partie avant de l'empeigne du chausson, ces deux éléments latéraux (14) étant fixés à l'élément central (13) par une couture bord à bord (15).A method of manufacturing a vamp (1) of removable boot of sports shoe according to the preceding claim, characterized in that it comprises the formation of a flat blank intended to form an outer layer of the vamp, this flat blank comprising a central member (13) for forming the rear portion of the boot upper and two softer side members (14) for forming the front portion of the boot upper, both of said side members (14) being secured to the central element (13) by an edge-to-edge seam (15). Procédé de fabrication d'une empeigne de chausson amovible de chaussure de sport selon la revendication 8 ou 9, caractérisé en ce qu'il comprend de plus une étape consistant à fixer un élément de mousse sur l'ébauche plane (11) et à usiner cet élément de mousse après sa fixation pour lui donner une forme variée (16, 17) adaptée à l'anatomie d'un pied.A method of manufacturing a removable athletic shoe boot upper according to claim 8 or 9, characterized in that it further comprises a step of attaching a foam member to the planar blank (11) and to be machined this foam element after its attachment to give it a varied shape (16, 17) adapted to the anatomy of a foot. Procédé de fabrication d'une empeigne de chausson amovible de chaussure de sport selon l'une des revendications 8 à 10, caractérisé en ce qu'il comprend une étape de mise en forme de l'ébauche plane (11) pour former l'empeigne (1) tridimensionnelle.A method of manufacturing a removable boot lining of a sports boot according to one of claims 8 to 10, characterized in that it comprises a step of shaping the flat blank (11) to form the vamp (1) three-dimensional. Procédé de fabrication d'un chausson de chaussure de sport, caractérisé en ce qu'il comprend la fabrication d'une empeigne (1) selon la revendication précédente puis une étape de fixation d'une semelle (2) sur l'empeigne.A method of manufacturing a boot of sport shoe, characterized in that it comprises the manufacture of a vamp (1) according to the preceding claim and a step of fixing a sole (2) on the vamp.
EP08425417A 2008-06-12 2008-06-12 Innerboot for a sports shoe Withdrawn EP2132998A1 (en)

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JP6558749B2 (en) * 2014-08-30 2019-08-14 フッド株式会社 Inner boots
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