WO1998025493A1 - Sole with air pocket, footwear equipped with such a sole and method for mounting same - Google Patents

Sole with air pocket, footwear equipped with such a sole and method for mounting same Download PDF

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Publication number
WO1998025493A1
WO1998025493A1 PCT/FR1997/002278 FR9702278W WO9825493A1 WO 1998025493 A1 WO1998025493 A1 WO 1998025493A1 FR 9702278 W FR9702278 W FR 9702278W WO 9825493 A1 WO9825493 A1 WO 9825493A1
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WO
WIPO (PCT)
Prior art keywords
sole
base
air pocket
flexible
upper face
Prior art date
Application number
PCT/FR1997/002278
Other languages
French (fr)
Inventor
Nicolas Bourdy
Gérard Grizot
Original Assignee
Etablissements Chupin Batardiere
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 Etablissements Chupin Batardiere filed Critical Etablissements Chupin Batardiere
Priority to EP97951315A priority Critical patent/EP0951221A1/en
Priority to AU54888/98A priority patent/AU5488898A/en
Publication of WO1998025493A1 publication Critical patent/WO1998025493A1/en

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Classifications

    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00—Soles; Sole-and-heel integral units
    • A43B13/14—Soles; Sole-and-heel integral units characterised by the constructive form
    • A43B13/18—Resilient soles
    • A43B13/20—Pneumatic soles filled with a compressible fluid, e.g. air, gas

Definitions

  • the present invention relates to a shoe sole comprising a bottom associated with a shock absorbing air pocket which is arranged on most of the forefoot; it also relates to the shoe fitted with such a sole, as well as the method of mounting this shoe.
  • document US-A-5 245 766 describes a shoe sole consisting of a sole base receiving an added heel and the upper face of which receives a first air cushion on the forefoot area and a second air cushion on the heel section.
  • the two air cushions are prepared in advance and they are positioned on the base of the sole, directly assembled with it or secured by means of complementary structural layers.
  • the present invention provides an air pocket sole of simplified structure allowing the manufacture of a comfortable footwear, in an original way.
  • the air pocket consists of at least one flexible upper in volume, produced by molding an airtight material; this top defines at least one air trapping cell bordered by a peripheral base, which base is secured in leaktight manner with the upper face of a sole base, also made of airtight material, which thus forms the below said air pocket.
  • the upper face of the sole base has a groove for receiving the peripheral base of the flexible top; this feature makes it easier to position and secure this flexible top on the support bottom.
  • the upper face of the bottom of the sole has a slight recess which is delimited by the zone of attachment of the base of the flexible top and which makes it possible to increase the volume of the air pocket.
  • the flexible top of the air pocket is provided with at least one transverse recess which divides the air pocket into at least two cells and which defines a fold line improving the walking comfort.
  • the transverse recess or grooves are extended by an internal base which is tightly secured to the upper face of the sole base, to form a plurality of independent cells.
  • the upper face of the sole base has a projecting rib opposite each base of the recesses of the flexible top, each of said bases being secured to the upper face of a rib of the sole base arranged in correspondence.
  • the sole has an air pocket consisting of a flexible upper in volume which occupies most of the forefoot; this flexible top has three transverse recesses which are distributed in a substantially regular manner over the forefoot and which are oriented according to the morphology of the foot, in order to facilitate the folding of the sole during walking, said transverse recesses defining four cells air juxtaposed.
  • the air pocket follows the outside contour of the sole base at the level of the forefoot, set back with respect to this outside contour to preserve a blank peripheral strip allowing the sticking of the upper.
  • the sole base is provided with a through opening which defines a housing for an insert made of transparent material, the upper face of which comprises a marking which is accessible visually from the lower face of said base of the sole.
  • This transparent insert constitutes a window making it possible to visually access the interior marking in the form of a logo, registered trademark, technical information or the like.
  • the insert of transparent material is housed in an opening which is arranged in the level of the sole zone corresponding to the arch of the foot, behind the bottom portion of the sole which comes into contact with the ground, and the flexible top of the air pocket has a rear extension in the form of a tongue, suitable for cover said insert on the upper face of the base of the sole, to act as a protective element and to promote the visibility of the marking.
  • this footwear also relates to the footwear article provided with the air pocket sole which has just been described.
  • this footwear is of the “female walker” type; it consists of a rod, a first assembly, a first sock and an air pocket sole in accordance with the present invention, the first sock consisting of a flexible front part, made of material such as leather, and a rigid rear part.
  • two thicknesses of foam are interposed between the first of cleanliness and the first of assembly.
  • the assembly process for this footwear consists in preparing a first assembly in two parts, one flexible corresponding to the forefoot part and the other rigid, on the rear, then to sticking a first thickness of foam on said first assembly before mounting the rod on this first assembly by means of an appropriate form; we then assemble the sole to air pocket with said first mounting; and finally assembling the first cleanliness, on the underside of which a second thickness of foam has previously been bonded, with said first thickness of foam secured to the first assembly.
  • FIG. 1 is a sectional view longitudinal of a shoe type "female walker” according to the invention, provided with a cushioning air pocket at the forefoot;
  • - Figure 2 shows the sole with air pocket of the shoe, seen from above;
  • - Figure 3 is a top view of the bottom of the sole used for making the sole of Figure 2;
  • FIG. 4 is a sectional view of the sole base along 4-4;
  • FIG. 5 is a top view which shows the flexible molded top intended to be secured to the bottom of the sole of Figures 3 and 4 to obtain the sole according to the invention illustrated in Figure 2;
  • FIG. 6 is a top view molded in longitudinal section along 6-6.
  • the shoe of the “female walker” type shown in FIG. 1 consists of a rod 1 whose lower edge is pinched between a sole 2 and a first mounting 3.
  • the first mounting 3 is covered with two layers of foam 4 , 5 and a first cleanliness 6 which forms the contact surface with the foot of the user.
  • the rear part of the sole 2 is fitted with an added heel 8.
  • the upper face of the sole 2 includes an air pocket 10 which extends over most of the forefoot area and which forms a cushion for shock absorption related to walking.
  • the sole 2 of this shoe has been shown in isolation in Figure 2.
  • This sole 2 consists of a sole base 12 (visible in isolation in Figures 3 and 4) whose front part forms the underside of the air pocket 10, and an attached flexible part 14 (visible in isolation in FIGS. 5 and 6) which forms the top of said air pocket 10 and which traps a volume of air adapted to the desired damping function.
  • the bottom of the sole 12 is made of an airtight material, for example rubber or of polyurethane type plastic. Its general shape corresponds to the contour of the foot and its thickness can be of the order of a few millimeters.
  • the top 14 is made by molding flexible plastic material, of the polyurethane type for example, airtight. It is preformed in the shape of a slightly curved shell, bordered by a peripheral base 15 whose contour corresponds to the desired damping surface at the level of the forefoot.
  • the base 15 of the flexible top 14 is tightly secured to the upper surface of the sole 12, at the forefoot portion thereof, so as to trap the volume of damping air between said base 12 and said upper 14. This watertight connection is achieved by bonding or by suitable welding of the high frequency, ultrasound, heat, etc. type.
  • the base 15 of the top 14 is preferably inserted in a peripheral groove 16, of generally suitable shape, which is arranged in the upper face of the sole of the sole 12.
  • This groove 16 has a U-shaped section adapted to the shape of section of the base 15 from the top 14; it facilitates positioning from the top 14 on the bottom of the sole 12 and it optimizes the connection between the two structures.
  • the groove 16 follows the external contour of the base of the sole 12, in the front part thereof. This contour follow-up is carried out in withdrawal so as to preserve a virgin peripheral band 17 which is not covered by the air pocket 10 and on which the lower edge of the shoe upper 1 will be able to be fixed.
  • the upper face of the sole 12 has a slight recess 20 over the entire area delimited by the groove 16.
  • This recess 20 makes it possible to increase the volume of the air pocket 10; its depth is limited to maintain a sufficient sole thickness at the forefoot.
  • the flexible shell 14 which forms the top of the air pocket 10 comprises a few transverse recesses 22 which are produced during the preforming of the flexible shell 7 and which define a plurality of cells 24.
  • the base 23 of the recesses 22 is secured to the upper face of the base of the sole 12, to partition the air pocket 10 and obtain independent cells 24.
  • each base 23 is secured to the upper face of a projecting rib 25 arranged in correspondence on the upper face of the sole 12 in the recess 20.
  • the height of the projecting ribs 25 corresponds to the depth of the recess 20.
  • the assembly between the bases 23 and the ribs 25 is carried out at the same time and by the same technique as the assembly of the base 15 with the base of the sole 2.
  • the sole 2 which is illustrated in the various figures comprises an air pocket 10 provided with three recesses 22 which define four cells 24 for imprisonment d air juxtaposed.
  • the three recesses 22 are more or less evenly distributed over the forefoot area; they are straight and oriented according to the morphology of the foot, to facilitate the folding of the sole and the shoe when walking.
  • the sole 12 has a through opening 30, of generally rectangular shape, which is filled in leaktight manner by a transparent insert 31 intended to materialize, from the outside, the presence of the air pocket 10.
  • This transparent insert 31 is made of a material compatible with the nature of the sole of the sole 12. Its shape can be arbitrary (rectangular, square, circular or other, etc.) and it is fixed by any suitable technique of the bonding or welding type (heat, ultrasound, high frequencies, etc.).
  • the insert 31 is preferably placed outside the zone of contact of the sole with the ground, and it is provided in particular at the level of the base sole zone 12 corresponding at the arch of the foot.
  • This insert 31 can also constitute a window allowing visual access to a mark, acronym, logo or other ... affixed on its upper face 32.
  • its nature can be adapted to form a magnifying effect with a view to increase the size of the marking.
  • the insert 31 is situated outside the space requirement of the air pocket 10 and that the flexible top 14 has a rear extension 34, in the form of a tongue, which s' extends up to said transparent insert 31, to cover its upper face 32.
  • This tongue 34 serves as an interface element between the insert 31 and the first mounting 3; it defines a bottom surface capable of improving the visibility of the marking produced on the upper face of the insert 31, which visibility is likely to be affected by the nature and the color of the first mounting 3. It is possible to secure the tongue 34 with the bottom of the sole 12, for example at its contour; but this tongue 34 can also remain free, simply adjoining the top 14, at the level of the sealed edge of the adjacent cell 24.
  • the transparent insert 31 is preferably secured to the base of the sole 12 before installing the flexible top 14 .
  • the comfort aspect linked to the presence of the air pocket 10 can be further improved by providing a first mounting 3 in two parts, one flexible 36 on the front and the other rigid 37 on the rear.
  • the flexible part 36 can be made of leather; it covers the air pocket 10 over the entire forefoot area.
  • the rigid rear part 37 can be made of a material of the cardboard type in which a rigid metal insert 38 is placed.
  • the shoe mounting method shown in Figure 1 consists in preparing the first mounting 3 by joining end to end, by gluing for example, the front flexible part 36 with the rigid rear part 37, then sticking the first thickness of foam 4 over the entire upper surface of said first mounting 3. An assembly is obtained which is sufficiently rigid to allow the mounting of the rod 1 by bonding to said first mounting, conventionally, by means of an appropriate shape.
  • the following operation consists in fixing by gluing the sole with an air pocket 2 on the underside of the first mounting 3, then in fixing the rear heel 8 by gluing and nailing.
  • the underside of the first cleanliness 6, of leather-like material for example, is coated with the second thickness of foam 5 and this bi-layer complex 5-6 is positioned and fixed inside the shoe, both foam layers 4 and 5 then being superimposed, in contact with each other.
  • This shoe structure provides appreciable walking comfort which is particularly suitable for models of the type "Woman walker", but of course, the same cushioning structure can be considered for other types or other models of footwear.
  • the top 14 with the different cells 24 is made in one piece; of course, a similar damping structure, although a little more complicated to achieve, could be obtained by means of several independent juxtaposed tops.

Abstract

The invention concerns a sole comprising a sole base (12) associated with an air pocket (10) arranged over most of the forefoot. The air pocket (10) consists of at least a top (14) flexible in volume, produced by moulding of an airtight material, said flexible top (14) defining at least one cell (24) for trapping air, bordered by a peripheral seat (15), said seat (15) being tightly integral with the upper face of the sole base (12), made of an airtight material, thus forming the bottom of said air pocket. The shoe equipped with such a sole with air pocket (2) preferably comprises an insole (3) in two parts, one flexible (36) on the forefoot and the other rigid (37) on the rear.

Description

SEMELLE A POCHE D'AIR, ARTICLE CHAUSSANT MUNI D'UNE TELLEAIR POCKET SOLE, ARTICLE OF FOOTWEAR PROVIDED WITH SUCH A POCKET
SEMELLE ET SON PROCEDE DE MONTAGESOLE AND MOUNTING METHOD THEREOF
La présente invention concerne une semelle de chaussure comprenant un fond associé â une poche d'air d'amortissement des chocs qui est aménagée sur la majeure partie de l'avant-pied ; elle concerne également la chaussure équipée d'une telle semelle, ainsi que le procédé de montage de cette chaussure.The present invention relates to a shoe sole comprising a bottom associated with a shock absorbing air pocket which is arranged on most of the forefoot; it also relates to the shoe fitted with such a sole, as well as the method of mounting this shoe.
On sait déjà améliorer le confort de la marche en prévoyant des structures d'amortissement des chocs, intégrées dans la semelle de la chaussure ou disposées sur ladite semelle, lesquelles structures d'amortissement se présentent sous la forme de coussins ou de poches contenant de l'air.We already know how to improve walking comfort by providing shock absorbing structures, integrated into the sole of the shoe or arranged on said sole, which damping structures are in the form of cushions or pockets containing l 'air.
Par exemple, le document US-A-5 245 766 décrit une semelle de chaussure constituée d'un fond de semelle recevant un talon rapporté et dont la face supérieure reçoit un premier coussin d'air sur la zone d'avant-pied et un second coussin d'air sur la partie de talon.For example, document US-A-5 245 766 describes a shoe sole consisting of a sole base receiving an added heel and the upper face of which receives a first air cushion on the forefoot area and a second air cushion on the heel section.
Les deux coussins d'air sont préparés à l'avance et Ils sont positionnés sur le fond de semelle, directement assemblés avec celui-ci ou solidarisés par l'intermédiaire de couches structurelles complémentaires.The two air cushions are prepared in advance and they are positioned on the base of the sole, directly assembled with it or secured by means of complementary structural layers.
La présente invention propose une semelle â poche d'air de structure simplifiée permettant la confection d'un article chaussant confortable, d'une manière originale. Dans la semelle de chaussure conforme â l'invention, la poche d'air est constituée d'au moins un dessus souple en volume, réalisé par moulage d'un matériau étanche â l'air ; ce dessus définit au moins une alvéole d'emprisonnement d'air bordée par une embase périphérique, laquelle embase est solidarisée de façon étanche avec la face supérieure d'un fond de semelle, également en matériau étanche à l'air, qui forme ainsi le dessous de ladite poche d'air. De préférence, la face supérieure du fond de semelle comporte une rainure d'accueil de l'embase périphérique du dessus souple ; cette particularité permet de faciliter le positionnement et la solidarisation de ce dessus souple sur le fond support. Selon une autre caractéristique avantageuse, la face supérieure du fond de semelle comporte un léger évidement qui est délimité par la zone de solidarisation de l'embase du dessus souple et qui permet d'augmenter le volume de la poche d'air.The present invention provides an air pocket sole of simplified structure allowing the manufacture of a comfortable footwear, in an original way. In the shoe sole according to the invention, the air pocket consists of at least one flexible upper in volume, produced by molding an airtight material; this top defines at least one air trapping cell bordered by a peripheral base, which base is secured in leaktight manner with the upper face of a sole base, also made of airtight material, which thus forms the below said air pocket. Preferably, the upper face of the sole base has a groove for receiving the peripheral base of the flexible top; this feature makes it easier to position and secure this flexible top on the support bottom. According to another advantageous characteristic, the upper face of the bottom of the sole has a slight recess which is delimited by the zone of attachment of the base of the flexible top and which makes it possible to increase the volume of the air pocket.
Selon une autre particularité, le dessus souple de la poche d'air est muni d'au moins une creusure transversale qui divise la poche d'air en au moins deux alvéoles et qui définit une ligne de pliage améliorant le confort de marche. De préférence, la ou les creusures transversales se prolongent par une embase interne qui est solidarisée de façon étanche avec la face supérieure du fond de semelle, pour former une pluralité d'alvéoles indépendantes.According to another particularity, the flexible top of the air pocket is provided with at least one transverse recess which divides the air pocket into at least two cells and which defines a fold line improving the walking comfort. Preferably, the transverse recess or grooves are extended by an internal base which is tightly secured to the upper face of the sole base, to form a plurality of independent cells.
Selon une autre caractéristique, la face supérieure du fond de semelle comporte une nervure en saillie en regard de chaque embase des creusures du dessus souple, chacune desdites embases étant solidarisée avec la face supérieure d'une nervure du fond de semelle disposée en correspondance.According to another characteristic, the upper face of the sole base has a projecting rib opposite each base of the recesses of the flexible top, each of said bases being secured to the upper face of a rib of the sole base arranged in correspondence.
Selon une forme de réalisation préférée, la semelle comporte une poche d'air constituée d'un dessus souple en volume qui occupe la majeure partie de l'avant-pied ; ce dessus souple comporte trois creusures transversales qui sont réparties de façon sensiblement régulière sur l'avant-pied et qui sont orientées selon la morphologie du pied, en vue de faciliter le pliage de la semelle lors de la marche, lesdites creusures transversales définissant quatre alvéoles d'emprisonnement d'air juxtaposées.According to a preferred embodiment, the sole has an air pocket consisting of a flexible upper in volume which occupies most of the forefoot; this flexible top has three transverse recesses which are distributed in a substantially regular manner over the forefoot and which are oriented according to the morphology of the foot, in order to facilitate the folding of the sole during walking, said transverse recesses defining four cells air juxtaposed.
Toujours selon l'invention, la poche d'air suit le contour extérieur du fond de semelle au niveau de l'avant-pied, en retrait par rapport à ce contour extérieur pour préserver une bande périphérique vierge permettant le collage de la tige. Selon une autre particularité de l'invention, le fond de semelle est muni d'une ouverture traversante qui définit un logement pour un insert en matériau transparent dont la face supérieure comporte un marquage accessible visuellement depuis la face inférieure dudit fond de semelle. Cet insert transparent constitue une fenêtre permettant d'accéder visuellement au marquage intérieur en forme de logo, de marque déposée, d'informations techniques ou autres ... De préférence, l'insert en matériau transparent est logé dans une ouverture qui est aménagée au niveau de la zone de semelle correspondant à la voûte plantaire, en arrière de la partie de fond de semelle qui entre en contact avec le sol, et le dessus souple de la poche d'air comporte un prolongement arrière en forme de languette, apte à venir recouvrir ledit insert sur la face supérieure du fond de semelle, pour faire office d'élément de protection et pour favoriser la visibilité du marquage.Still according to the invention, the air pocket follows the outside contour of the sole base at the level of the forefoot, set back with respect to this outside contour to preserve a blank peripheral strip allowing the sticking of the upper. According to another particular feature of the invention, the sole base is provided with a through opening which defines a housing for an insert made of transparent material, the upper face of which comprises a marking which is accessible visually from the lower face of said base of the sole. This transparent insert constitutes a window making it possible to visually access the interior marking in the form of a logo, registered trademark, technical information or the like. Preferably, the insert of transparent material is housed in an opening which is arranged in the level of the sole zone corresponding to the arch of the foot, behind the bottom portion of the sole which comes into contact with the ground, and the flexible top of the air pocket has a rear extension in the form of a tongue, suitable for cover said insert on the upper face of the base of the sole, to act as a protective element and to promote the visibility of the marking.
L'invention concerne aussi l'article chaussant muni de la semelle à poche d'air qui vient d'être décrite. Selon une forme de réalisation préférée, cet article chaussant est de type « trotteur femme » ; il est constitué d'une tige, d'une première de montage, d'une première de propreté et d'une semelle à poche d'air conforme à la présente invention, la première de propreté étant constituée d'une partie avant souple, en matériau tel que du cuir, et d'une partie arrière rigide.The invention also relates to the footwear article provided with the air pocket sole which has just been described. According to a preferred embodiment, this footwear is of the “female walker” type; it consists of a rod, a first assembly, a first sock and an air pocket sole in accordance with the present invention, the first sock consisting of a flexible front part, made of material such as leather, and a rigid rear part.
Selon une autre caractéristique avantageuse, deux épaisseurs de mousse sont interposées entre la première de propreté et la première de montage.According to another advantageous characteristic, two thicknesses of foam are interposed between the first of cleanliness and the first of assembly.
Le procédé de montage de cet article chaussant consiste à préparer une première de montage en deux parties, l'une souple correspondant â la partie d'avant-pied et l'autre rigide, sur l'arrière, puis â coller une première épaisseur de mousse sur ladite première de montage avant de monter la tige sur cette première de montage au moyen d'une forme appropriée ; on assemble ensuite la semelle à poche d'air avec ladite première de montage ; et on assemble enfin la première de propreté, sur la face inférieure de laquelle on a préalablement collé une seconde épaisseur de mousse, avec ladite première épaisseur de mousse solidarisée avec la première de montage.The assembly process for this footwear consists in preparing a first assembly in two parts, one flexible corresponding to the forefoot part and the other rigid, on the rear, then to sticking a first thickness of foam on said first assembly before mounting the rod on this first assembly by means of an appropriate form; we then assemble the sole to air pocket with said first mounting; and finally assembling the first cleanliness, on the underside of which a second thickness of foam has previously been bonded, with said first thickness of foam secured to the first assembly.
Mais l'invention sera encore illustrée, sans être aucunement limitée, par la description suivante d'un mode de réalisation particulier, donné uniquement à titre d'exemple et représenté sur les dessins annexés dans lesquels : - la figure 1 est une vue en coupe longitudinale d'une chaussure type « trotteur femme » conforme à l'invention, munie d'une poche d'air d'amortissement au niveau de l'avant-pied ;However, the invention will be further illustrated, without being in any way limited, by the following description of a particular embodiment, given solely by way of example and shown in the accompanying drawings in which: - Figure 1 is a sectional view longitudinal of a shoe type "female walker" according to the invention, provided with a cushioning air pocket at the forefoot;
- la figure 2 montre la semelle à poche d'air de la chaussure, en vue de dessus ; - la figure 3 est une vue de dessus du fond de semelle utilisé pour la confection de la semelle de la figure 2 ;- Figure 2 shows the sole with air pocket of the shoe, seen from above; - Figure 3 is a top view of the bottom of the sole used for making the sole of Figure 2;
- la figure 4 est une vue en coupe du fond de semelle selon 4-4 ;- Figure 4 is a sectional view of the sole base along 4-4;
- la figure 5 est une vue de dessus qui montre le dessus souple moulé destiné à être solidarisé avec le fond de semelle des figures 3 et 4 pour obtenir la semelle conforme à l'invention illustrée sur la figure 2 ;- Figure 5 is a top view which shows the flexible molded top intended to be secured to the bottom of the sole of Figures 3 and 4 to obtain the sole according to the invention illustrated in Figure 2;
- la figure 6 est une vue du dessus moulé, en coupe longitudinale selon 6-6.- Figure 6 is a top view molded in longitudinal section along 6-6.
La chaussure de type « trotteur femme » représentée sur la figure 1 est constituée d'une tige 1 dont la bordure inférieure est pincée entre une semelle 2 et une première de montage 3. La première de montage 3 est recouverte de deux épaisseurs de mousse 4, 5 et d'une première de propreté 6 qui forme la surface de contact avec le pied de l'utilisateur. La partie arrière de la semelle 2 est équipée d'un talon rapporté 8. La face supérieure de la semelle 2 comporte une poche d'air 10 qui s'étend sur la majeure partie de la zone d'avant-pied et qui forme un coussin d'amortissement des chocs liés à la marche.The shoe of the “female walker” type shown in FIG. 1 consists of a rod 1 whose lower edge is pinched between a sole 2 and a first mounting 3. The first mounting 3 is covered with two layers of foam 4 , 5 and a first cleanliness 6 which forms the contact surface with the foot of the user. The rear part of the sole 2 is fitted with an added heel 8. The upper face of the sole 2 includes an air pocket 10 which extends over most of the forefoot area and which forms a cushion for shock absorption related to walking.
La semelle 2 de cette chaussure a été représentée isolément sur la figure 2. Cette semelle 2 est constituée d'un fond de semelle 12 (visible isolément sur les figures 3 et 4) dont la partie avant forme le dessous de la poche d'air 10, et d'une partie souple rapportée 14 (visible isolément sur les figures 5 et 6) qui forme le dessus de ladite poche d'air 10 et qui emprisonne un volume d'air adapté à la fonction d'amortissement recherchée.The sole 2 of this shoe has been shown in isolation in Figure 2. This sole 2 consists of a sole base 12 (visible in isolation in Figures 3 and 4) whose front part forms the underside of the air pocket 10, and an attached flexible part 14 (visible in isolation in FIGS. 5 and 6) which forms the top of said air pocket 10 and which traps a volume of air adapted to the desired damping function.
Le fond de semelle 12 est réalisé en un matériau étanche à l'air, par exemple en caoutchouc ou en matière plastique type polyuréthanne. Sa forme générale correspond au contour du pied et son épaisseur peut être de l'ordre de quelques millimètres. Le dessus 14 est réalisé par moulage de matière plastique souple, du type polyuréthanne par exemple, étanche à l'air. Il est préformé en forme de coquille légèrement bombée, bordée par une embase périphérique 15 dont le contour correspond à la surface d'amortissement désirée au niveau de l'avant-pied. L'embase 15 du dessus souple 14 est solidarisée de façon étanche avec la surface supérieure du fond de semelle 12, au niveau de la partie d'avant-pied de celui-ci, de façon â emprisonner le volume d'air d'amortissement entre ledit fond de semelle 12 et ledit dessus 14. Cette solidarisation étanche est réalisée par un collage ou par une soudure appropriée de type hautes fréquences, ultrasons, chaleur ...The bottom of the sole 12 is made of an airtight material, for example rubber or of polyurethane type plastic. Its general shape corresponds to the contour of the foot and its thickness can be of the order of a few millimeters. The top 14 is made by molding flexible plastic material, of the polyurethane type for example, airtight. It is preformed in the shape of a slightly curved shell, bordered by a peripheral base 15 whose contour corresponds to the desired damping surface at the level of the forefoot. The base 15 of the flexible top 14 is tightly secured to the upper surface of the sole 12, at the forefoot portion thereof, so as to trap the volume of damping air between said base 12 and said upper 14. This watertight connection is achieved by bonding or by suitable welding of the high frequency, ultrasound, heat, etc. type.
L'embase 15 du dessus 14 vient de préférence s'insérer dans une rainure périphérique 16, de forme générale adaptée, qui est aménagée dans la face supérieure du fond de semelle 12. Cette rainure 16 a une section en U adaptée â la forme de section de l'embase 15 du dessus 14 ; elle permet de faciliter le positionnement du dessus 14 sur le fond de semelle 12 et elle optimise la solidarisation entre les deux structures.The base 15 of the top 14 is preferably inserted in a peripheral groove 16, of generally suitable shape, which is arranged in the upper face of the sole of the sole 12. This groove 16 has a U-shaped section adapted to the shape of section of the base 15 from the top 14; it facilitates positioning from the top 14 on the bottom of the sole 12 and it optimizes the connection between the two structures.
Sur les figures 2 et 3, on remarque que la rainure 16 suit le contour extérieur du fond de semelle 12, dans la partie avant de celui-ci. Ce suivi de contour s'effectue en retrait de façon â préserver une bande périphérique vierge 17 qui n'est pas recouverte par la poche d'air 10 et sur laquelle va pouvoir être fixée la bordure inférieure de la tige de chaussure 1.In FIGS. 2 and 3, it can be seen that the groove 16 follows the external contour of the base of the sole 12, in the front part thereof. This contour follow-up is carried out in withdrawal so as to preserve a virgin peripheral band 17 which is not covered by the air pocket 10 and on which the lower edge of the shoe upper 1 will be able to be fixed.
De préférence, la face supérieure du fond de semelle 12 comporte un léger évidement 20 sur toute la zone délimitée par la rainure 16. Cet évidement 20 permet d'augmenter le volume de la poche d'air 10 ; sa profondeur est limitée pour conserver une épaisseur de semelle suffisante au niveau de l'avant-pied.Preferably, the upper face of the sole 12 has a slight recess 20 over the entire area delimited by the groove 16. This recess 20 makes it possible to increase the volume of the air pocket 10; its depth is limited to maintain a sufficient sole thickness at the forefoot.
Pour améliorer le confort de marche, la coquille souple 14 qui forme le dessus de la poche d'air 10 comporte quelques creusures transversales 22 qui sont réalisées lors du préformage de la coquille souple 7 et qui définissent une pluralité d'alvéoles 24. De préférence, l'embase 23 des creusures 22 est solidarisée avec la face supérieure du fond de semelle 12, pour cloisonner la poche d'air 10 et obtenir des alvéoles 24 indépendantes.To improve walking comfort, the flexible shell 14 which forms the top of the air pocket 10 comprises a few transverse recesses 22 which are produced during the preforming of the flexible shell 7 and which define a plurality of cells 24. Preferably , the base 23 of the recesses 22 is secured to the upper face of the base of the sole 12, to partition the air pocket 10 and obtain independent cells 24.
En fait, comme on peut le voir sur la figure 1 et sur la figure 4 dans laquelle une partie du dessus 14 a été représentée en pointillés, chaque embase 23 est solidarisée avec la face supérieure d'une nervure en saillie 25 aménagée en correspondance sur la face supérieure du fond de semelle 12, dans l'êvidement 20. La hauteur des nervures en saillie 25 correspond à la profondeur de l'êvidement 20. L'assemblage entre les embases 23 et les nervures 25 est réalisé en même temps et par la même technique que l'assemblage de l'embase 15 avec le fond de semelle 2. La semelle 2 qui est illustrée sur les différentes figures comporte une poche d'air 10 munie de trois creusures 22 qui définissent quatre alvéoles 24 d'emprisonnement d'air juxtaposées. Les trois creusures 22 sont à peu près régulièrement réparties sur la zone d'avant-pied ; elles sont rectilignes et orientées en fonction de la morphologie du pied, pour faciliter le pliage de la semelle et de la chaussure lors de la marche. Sur les figures 1 à 4, on remarque que le fond de semelle 12 comporte une ouverture traversante 30, de forme générale rectangulaire, qui est comblée de façon étanche par un insert transparent 31 destiné à matérialiser, de l'extérieur, la présence de la poche d'air 10. Cet insert transparent 31 est réalisé en un matériau compatible avec la nature du fond de semelle 12. Sa forme peut être quelconque (rectangulaire, carrée, circulaire ou autre ...) et il est fixé par toute technique appropriée du genre collage ou soudure (chaleur, ultrasons, hautes fréquences ...). Pour limiter l'usure de sa face inférieure, l'insert 31 est de préférence disposé en-dehors de la zone de contact de la semelle avec le sol, et on le prévoit en particulier au niveau de la zone de fond de semelle 12 correspondant à la voûte plantaire.In fact, as can be seen in FIG. 1 and in FIG. 4 in which a part of the top 14 has been shown in dotted lines, each base 23 is secured to the upper face of a projecting rib 25 arranged in correspondence on the upper face of the sole 12 in the recess 20. The height of the projecting ribs 25 corresponds to the depth of the recess 20. The assembly between the bases 23 and the ribs 25 is carried out at the same time and by the same technique as the assembly of the base 15 with the base of the sole 2. The sole 2 which is illustrated in the various figures comprises an air pocket 10 provided with three recesses 22 which define four cells 24 for imprisonment d air juxtaposed. The three recesses 22 are more or less evenly distributed over the forefoot area; they are straight and oriented according to the morphology of the foot, to facilitate the folding of the sole and the shoe when walking. In FIGS. 1 to 4, it can be seen that the sole 12 has a through opening 30, of generally rectangular shape, which is filled in leaktight manner by a transparent insert 31 intended to materialize, from the outside, the presence of the air pocket 10. This transparent insert 31 is made of a material compatible with the nature of the sole of the sole 12. Its shape can be arbitrary (rectangular, square, circular or other, etc.) and it is fixed by any suitable technique of the bonding or welding type (heat, ultrasound, high frequencies, etc.). To limit the wear on its underside, the insert 31 is preferably placed outside the zone of contact of the sole with the ground, and it is provided in particular at the level of the base sole zone 12 corresponding at the arch of the foot.
Cet insert 31 peut encore constituer une fenêtre permettant l'accès visuel à une marque, sigle, logo ou autre ... apposé sur sa face supérieure 32. Dans ce cas, sa nature peut être adaptée pour former un effet loupe en vue d'augmenter la taille du marquage.This insert 31 can also constitute a window allowing visual access to a mark, acronym, logo or other ... affixed on its upper face 32. In this case, its nature can be adapted to form a magnifying effect with a view to increase the size of the marking.
Sur les figures 1 à 6, on remarque que l'insert 31 est situé en- dehors de l'encombrement de la poche d'air 10 et que le dessus souple 14 comporte un prolongement arrière 34, en forme de languette, qui s'étend jusqu'audit insert transparent 31, pour venir recouvrir sa face supérieure 32. Cette languette 34 sert d'élément d'interface entre l'insert 31 et la première de montage 3 ; elle définit une surface de fond apte à améliorer la visibilité du marquage réalisé sur la face supérieure de l'insert 31, laquelle visibilité est susceptible d'être affectée par la nature et la couleur de la première de montage 3. Il est possible de solidariser la languette 34 avec le fond de semelle 12, par exemple au niveau de son contour ; mais cette languette 34 peut aussi rester libre, simplement attenante au dessus 14, au niveau de la bordure étanche de l'alvéole adjacente 24. L'insert transparent 31 est de préférence solidarisé avec le fond de semelle 12 avant la pose du dessus souple 14.In FIGS. 1 to 6, it can be seen that the insert 31 is situated outside the space requirement of the air pocket 10 and that the flexible top 14 has a rear extension 34, in the form of a tongue, which s' extends up to said transparent insert 31, to cover its upper face 32. This tongue 34 serves as an interface element between the insert 31 and the first mounting 3; it defines a bottom surface capable of improving the visibility of the marking produced on the upper face of the insert 31, which visibility is likely to be affected by the nature and the color of the first mounting 3. It is possible to secure the tongue 34 with the bottom of the sole 12, for example at its contour; but this tongue 34 can also remain free, simply adjoining the top 14, at the level of the sealed edge of the adjacent cell 24. The transparent insert 31 is preferably secured to the base of the sole 12 before installing the flexible top 14 .
L'aspect confort lié à la présence de la poche d'air 10 peut encore être amélioré en prévoyant une première de montage 3 en deux parties, l'une souple 36 sur l'avant et l'autre rigide 37 sur l'arrière. La partie souple 36 peut être réalisée en cuir ; elle recouvre la poche d'air 10 sur toute la zone d'avant-pied. La partie arrière rigide 37 peut être réalisée en matériau du genre carton dans lequel est placé un insert rigide en métal 38.The comfort aspect linked to the presence of the air pocket 10 can be further improved by providing a first mounting 3 in two parts, one flexible 36 on the front and the other rigid 37 on the rear. The flexible part 36 can be made of leather; it covers the air pocket 10 over the entire forefoot area. The rigid rear part 37 can be made of a material of the cardboard type in which a rigid metal insert 38 is placed.
Le procédé de montage de la chaussure représentée sur la figure 1 consiste â préparer la première de montage 3 en solidarisant bout à bout, par collage par exemple, la partie souple avant 36 avec la partie arrière rigide 37, puis à coller la première épaisseur de mousse 4 sur toute la surface supérieure de ladite première de montage 3. On obtient un ensemble suffisamment rigide pour permettre le montage de la tige 1 par collage sur ladite première de montage, de manière classique, au moyen d'une forme appropriée.The shoe mounting method shown in Figure 1 consists in preparing the first mounting 3 by joining end to end, by gluing for example, the front flexible part 36 with the rigid rear part 37, then sticking the first thickness of foam 4 over the entire upper surface of said first mounting 3. An assembly is obtained which is sufficiently rigid to allow the mounting of the rod 1 by bonding to said first mounting, conventionally, by means of an appropriate shape.
L'opération suivante consiste à fixer par collage la semelle â poche d'air 2 sur la face inférieure de la première de montage 3, puis à fixer le talon arrière 8 par collage et cloutage.The following operation consists in fixing by gluing the sole with an air pocket 2 on the underside of the first mounting 3, then in fixing the rear heel 8 by gluing and nailing.
La face inférieure de la première de propreté 6, en matériau du genre cuir par exemple, est revêtue de la seconde épaisseur de mousse 5 et ce complexe bi-couche 5-6 est positionné et fixé à l'intérieur de la chaussure, les deux couches de mousse 4 et 5 étant alors superposées, en contact l'une avec l'autre.The underside of the first cleanliness 6, of leather-like material for example, is coated with the second thickness of foam 5 and this bi-layer complex 5-6 is positioned and fixed inside the shoe, both foam layers 4 and 5 then being superimposed, in contact with each other.
Cette structure de chaussure confère un confort de marche appréciable qui convient tout particulièrement aux modèles du type « trotteur femme », mais bien entendu, la même structure d'amortissement peut être envisagée pour d'autres types ou d'autres modèles d'articles chaussants.This shoe structure provides appreciable walking comfort which is particularly suitable for models of the type "Woman walker", but of course, the same cushioning structure can be considered for other types or other models of footwear.
Dans le mode de réalisation représenté, le dessus 14 avec les différentes alvéoles 24 est réalisé d'une seule pièce ; bien entendu, une structure d'amortissement similaire, bien qu'un peu plus compliquée à réaliser, pourrait être obtenue au moyen de plusieurs dessus indépendants juxtaposés. In the embodiment shown, the top 14 with the different cells 24 is made in one piece; of course, a similar damping structure, although a little more complicated to achieve, could be obtained by means of several independent juxtaposed tops.

Claims

8/254938/25493
- REVENDICATIONS - 1.- Semelle pour chaussure, comprenant un fond de semelle associé à une poche d'air aménagée sur la majeure partie de l'avant- pied, laquelle poche d'air définit une structure d'amortissement permettant d'absorber les chocs liés à la marche, caractérisée en ce qu'elle comporte une poche d'air (10) constituée d'au moins un dessus souple (14) en volume, réalisé par moulage d'un matériau étanche à l'air, lequel dessus (14) définit au moins une alvéole (24) d'emprisonnement d'air bordée par une embase périphérique (15), laquelle embase (15) est solidarisée de façon étanche avec la face supérieure du fond de semelle (12) réalisé en matériau étanche â l'air, lequel fond de semelle forme ainsi le dessous de ladite poche d'air (10).- CLAIMS - 1.- Sole for shoe, comprising a bottom of sole associated with an air pocket arranged on the major part of the forefoot, which air pocket defines a damping structure making it possible to absorb the impact related to walking, characterized in that it comprises an air pocket (10) consisting of at least one flexible top (14) in volume, produced by molding an airtight material, which top (14) defines at least one air confinement cell (24) bordered by a peripheral base (15), which base (15) is tightly secured to the upper face of the sole base (12) made of material airtight, which sole base thus forms the underside of said air pocket (10).
2.- Semelle selon la revendication 1, caractérisée en ce qu'elle comporte un fond de semelle (12) dont la face supérieure comporte une rainure (16) d'accueil de l'embase périphérique (15) du dessus (14).2.- sole according to claim 1, characterized in that it comprises a sole bottom (12) whose upper face has a groove (16) for receiving the peripheral base (15) from above (14).
3.- Semelle selon l'une quelconque des revendications 1 ou 2, caractérisée en ce qu'elle comporte un fond de semelle (12) dont la face supérieure comporte un léger évidement (20) délimité par la zone de solidarisation de l'embase (15) du dessus souple (14), lequel évidement permet d'augmenter le volume de la poche d'air (10).3.- sole according to any one of claims 1 or 2, characterized in that it comprises a sole base (12) whose upper face has a slight recess (20) delimited by the zone for securing the base (15) of the flexible top (14), which recess makes it possible to increase the volume of the air pocket (10).
4.- Semelle selon l'une quelconque des revendications 1 â 3, caractérisée en ce qu'elle comporte une poche d'air (10) dont le dessus souple (14) est muni d'au moins une creusure transversale (22) la divisant en au moins deux alvéoles (24) et définissant une ligne de pliage améliorant le confort de marche.4. Sole according to any one of claims 1 to 3, characterized in that it comprises an air pocket (10) whose flexible top (14) is provided with at least one transverse recess (22) the dividing into at least two cells (24) and defining a fold line improving walking comfort.
5.- Semelle selon la revendication 4, caractérisée en ce qu'elle comporte une poche d'air (10) dont le dessus souple (14) est muni d'au moins une creusure transversale (22) qui se prolonge par une embase interne (23), laquelle embase (23) est solidarisée de façon 8/254935.- sole according to claim 4, characterized in that it comprises an air pocket (10) whose flexible top (14) is provided with at least one transverse recess (22) which is extended by an internal base (23), which base (23) is integral so 8/25493
étanche avec la face supérieure du fond de semelle (12) pour former au moins deux alvéoles (24) indépendantes.sealed with the upper face of the sole base (12) to form at least two independent cells (24).
6.- Semelle selon la revendication 5, caractérisée en ce qu'elle comporte un fond de semelle (12) muni d'une nervure en saillie (25) en regard de l'embase (23) de chaque creusure (22) du dessus souple6. Sole according to claim 5, characterized in that it comprises a sole base (12) provided with a projecting rib (25) facing the base (23) of each recess (22) from above. flexible
(14), chaque embase (23) étant solidarisée avec la face supérieure d'une nervure (25) disposée en correspondance.(14), each base (23) being secured to the upper face of a rib (25) arranged in correspondence.
7.- Semelle selon l'une quelconque des revendications 5 ou 6, caractérisée en ce qu'elle comporte une poche d'air (10) constituée d'un dessus souple en volume (14) qui occupe la majeure partie de l'avant-pied, lequel dessus (14) comporte trois creusures transversales (22) réparties de façon sensiblement régulière sur l'avant-pied et orientées selon la morphologie du pied, en vue de faciliter le pliage de la semelle lors de la marche, lesdites creusures (22) définissant quatre alvéoles (24) d'emprisonnement d'air juxtaposées.7.- Sole according to any one of claims 5 or 6, characterized in that it comprises an air pocket (10) consisting of a flexible top in volume (14) which occupies most of the front -foot, which top (14) comprises three transverse recesses (22) distributed in a substantially regular manner on the forefoot and oriented according to the morphology of the foot, in order to facilitate the folding of the sole during walking, said recesses (22) defining four cells (24) trapped air juxtaposed.
8.- Semelle selon l'une quelconque des revendications 1 â 7, caractérisée en ce qu'elle comporte une poche d'air (10) qui suit le contour extérieur du fond de semelle (12) au niveau de l'avant-pied, en retrait par rapport à ce contour extérieur, pour préserver une bande périphérique vierge (17) permettant le collage de la tige (1). 8.- Sole according to any one of claims 1 to 7, characterized in that it comprises an air pocket (10) which follows the outer contour of the sole base (12) at the forefoot , set back from this outer contour, to preserve a blank peripheral strip (17) allowing the sticking of the rod (1).
9.- Semelle selon l'une quelconque des revendications 1 â 8, caractérisée en ce qu'elle comporte un fond de semelle (12) muni d'une ouverture traversante (30) qui définit un logement pour un insert (31) en matériau transparent dont la face supérieure (32) comporte un marquage accessible visuellement depuis la face inférieure dudit fond de semelle (12).9. Sole according to any one of claims 1 to 8, characterized in that it comprises a sole base (12) provided with a through opening (30) which defines a housing for an insert (31) made of material. transparent, the upper face (32) of which is marked visually accessible from the underside of said sole base (12).
10.- Semelle selon la revendication 9, caractérisée en ce qu'elle comporte un insert (31) en matériau transparent logé dans une ouverture (30) aménagée au niveau de la zone de semelle (2) correspondant à la voûte plantaire, en arrière de la partie de fond de semelle (12) qui entre en contact avec le sol, le dessus souple (14) de la poche d'air (10) comportant un prolongement arrière en forme de languette (34) apte à venir recouvrir ledit insert (31) sur la face supérieure dudit fond de semelle (12).10.- Sole according to claim 9, characterized in that it comprises an insert (31) of transparent material housed in an opening (30) arranged at the level of the sole zone (2) corresponding to the arch of the foot, behind the bottom part of the sole (12) which comes into contact with the ground, the flexible upper (14) the air pocket (10) comprising a rear tongue-shaped extension (34) capable of coming to cover said insert (31) on the upper face of said sole base (12).
11.- Article chaussant muni d'une semelle à poche d'air selon l'une quelconque des revendications 1 â 10.11. An article of footwear provided with an air pocket sole according to any one of claims 1 to 10.
12.- Article chaussant selon la revendication 11 , caractérisé en ce qu'il est constitué d'une tige (1), d'une première de montage (3), d'une première de propreté (6) et d'une semelle (2) selon l'une quelconque des revendications 1 à 10, la première de montage (3) étant constituée d'une partie avant souple (36), en matériau tel que du cuir, et d'une partie arrière rigide (37).12.- footwear according to claim 11, characterized in that it consists of a rod (1), a first mounting (3), a first of cleanliness (6) and a sole (2) according to any one of claims 1 to 10, the first mounting (3) consisting of a flexible front part (36), made of material such as leather, and a rigid rear part (37) .
13.- Article chaussant la revendication 12, caractérisé en ce qu'il comporte deux épaisseurs de mousse (4 et 5), entre la première de propreté (6) et la première de montage (3). 13.- footwear article of claim 12, characterized in that it comprises two thicknesses of foam (4 and 5), between the first of cleanliness (6) and the first of assembly (3).
14.- Procédé de montage d'un article chaussant selon la revendication 13, lequel procédé consiste :14.- A method of fitting an article of footwear according to claim 13, which method consists:
- à préparer une première de montage (3) en deux parties, l'une souple (36) correspondant à la partie d'avant-pied et l'autre rigide (37), sur l'arrière, - à coller une première épaisseur de mousse (4) sur ladite première de montage (3),- to prepare a first assembly (3) in two parts, one flexible (36) corresponding to the forefoot part and the other rigid (37), on the rear, - to bond a first thickness foam (4) on said first mounting (3),
- â monter la tige (1) sur ladite première de montage (3), au moyen d'une forme appropriée,- to mount the rod (1) on said first mounting (3), by means of an appropriate form,
- à assembler la semelle (2) à poche d'air (10) avec ladite première de montage (3),- assembling the sole (2) with an air pocket (10) with said first mounting (3),
- â assembler la première de propreté (6) sur la face inférieure de laquelle est collée une seconde épaisseur de mousse (5), avec ladite première épaisseur de mousse (4). - To assemble the first cleanliness (6) on the underside of which is bonded a second thickness of foam (5), with said first thickness of foam (4).
PCT/FR1997/002278 1996-12-12 1997-12-11 Sole with air pocket, footwear equipped with such a sole and method for mounting same WO1998025493A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP97951315A EP0951221A1 (en) 1996-12-12 1997-12-11 Sole with air pocket, footwear equipped with such a sole and method for mounting same
AU54888/98A AU5488898A (en) 1996-12-12 1997-12-11 Sole with air pocket, footwear equipped with such a sole and method for mountingsame

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR96/15467 1996-12-12
FR9615467A FR2757025B1 (en) 1996-12-12 1996-12-12 IMPROVEMENT ON FOOTWEAR

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AU (1) AU5488898A (en)
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EP0951221A1 (en) 1999-10-27
FR2757025A1 (en) 1998-06-19
AU5488898A (en) 1998-07-03
FR2757025B1 (en) 1999-03-05

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