EP1428447B1 - Shoe sole - Google Patents

Shoe sole Download PDF

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Publication number
EP1428447B1
EP1428447B1 EP20030023098 EP03023098A EP1428447B1 EP 1428447 B1 EP1428447 B1 EP 1428447B1 EP 20030023098 EP20030023098 EP 20030023098 EP 03023098 A EP03023098 A EP 03023098A EP 1428447 B1 EP1428447 B1 EP 1428447B1
Authority
EP
European Patent Office
Prior art keywords
reinforcing
characterized
element
sole
upper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP20030023098
Other languages
German (de)
French (fr)
Other versions
EP1428447A1 (en
Inventor
Frederic Cretinon
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.)
Salomon SAS
Original Assignee
Salomon SAS
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
Priority to FR0216239 priority Critical
Priority to FR0216239A priority patent/FR2848389B1/en
Application filed by Salomon SAS filed Critical Salomon SAS
Publication of EP1428447A1 publication Critical patent/EP1428447A1/en
Application granted granted Critical
Publication of EP1428447B1 publication Critical patent/EP1428447B1/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/02Soles; Sole and heel units characterised by the material
    • A43B13/026Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/02Soles; Sole and heel units characterised by the material
    • A43B13/12Soles with several layers of different materials
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B13/00Soles; Sole and heel units
    • A43B13/14Soles; Sole and heel units characterised by the constructive form
    • A43B13/141Soles; Sole and heel units characterised by the constructive form with a part of the sole being flexible, e.g. permitting articulation or torsion
    • AHUMAN NECESSITIES
    • A43FOOTWEAR
    • A43BCHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B23/00Uppers; Boot legs; Stiffeners; Other single parts of footwear
    • A43B23/08Heel stiffeners; Toe stiffeners
    • A43B23/16Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like
    • A43B23/17Heel stiffeners; Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics

Description

  • The present invention relates to shoes whose sole assembly is carried out according to a laminated structure having several layers or elements fulfilling distinct functions and relates in particular to the coupling of a reinforcing element of the rod with one of the elements of the sole assembly.
  • Speak US 6,000,148 a has been proposed a shoe construction comprising, on the one hand, a sole comprising a outsole and a sole reinforcement element, and secondly, a rod reinforcement element which is coupled to the reinforcing element. a sole, a cushioning and elastic reinforcing layer of the sole assembly being interposed between the rod and said sole reinforcing element.
  • Another construction was proposed by WO 02/07555 .
  • The coupling of the rod reinforcement elements and the sole reinforcement allows optimum transmission of the movements of the foot to the sole.
  • Such a construction is particularly interesting for walking or running on uneven ground because it improves the stability of the foot, the precision of the supports in the interface sole / soil while allowing the unfolding of the foot.
  • Such a shoe construction is therefore particularly suitable for "raid" type applications, that is to say involving running in rugged terrain.
  • Although very satisfactory and providing excellent strength and stability in the transverse direction, such a shoe construction is however too rigid, especially in the transverse direction for some users favoring the racing aspect and / or having lower requirements with regard to relates to the transverse stability aspect.
  • The object of the present invention is to overcome these disadvantages and to improve a shoe of the aforementioned type.
  • This object is achieved in the shoe according to claim 1.
  • Indeed, the flexible coupling in the transverse direction of the sole reinforcing element and the stem reinforcing element makes it possible to soften the boot for a race application while maintaining excellent transmission of the movements of the foot to the sole via the stem.
  • Such a construction is therefore always suitable for use in rough terrain, while being more optimized for a race application.
  • The coupling of the sole reinforcing member and the stem reinforcing member is effected via a damping midsole.
  • Anyway, the invention will be better understood and other characteristics thereof will be highlighted with the aid of the description which follows with reference to the schematic drawing annexed, illustrating by way of nonlimiting examples several embodiments and in which:
    • the figure 1 is a front perspective view of a shoe comprising a rod and sole reinforcement according to the invention,
    • the figure 2 is a bottom view of the sole reinforcement / midsole assembly,
    • the figure 3 is an exploded perspective view of the complete assembly before assembly,
    • the figure 4 is a sectional view along IV-IV of the figure 2 ,
    • the figure 5 is a sectional view according to VV of the figure 2 ,
    • the figure 6 is a perspective view of a reinforcing element of the sole and rod according to a second embodiment.
  • The shoe 1 represented by way of non-limiting example on the figure 1 comprises a rod 10 provided with a rod reinforcement 20 and a sole assembly 30 comprising a laminated structure described hereinafter with reference to Figures 2 to 5 .
  • As shown more particularly by the figure 3 , the sole 30 consists, from bottom to top, of a wear sole 40, a sole reinforcing element 50 and a midsole 60.
  • The outsole 40, also called outsole is made of an adherent material and resistant to wear such as preferably rubber, but also polyurethane or polymer on thermoplastic base.
  • The midsole 60 is made of a damping material such as EVA, polyurethane or thermosetting polymer alloy.
  • It is fixed directly on the upper 10 of the boot and extends over the entire surface of the sole. The soleing reinforcing element 50 is constituted by a plate of relatively rigid material and preferably having elastic characteristics, such as polyamide, polyurethane, PEBE, PEBA, PBT.
  • It may also consist of a textile insert that is preferably inextensible and resistant to abrasion, such as polyester, polyamide, stiffened with glue, such as polyurethane, hot melt or neoprene glue.
  • Each of the elements 40, 50, 60 forming the sole formation forms a layer extending substantially over the entire surface of said sole and / or the foot of the user. In particular, the reinforcing element 50 extends over substantially the entire length of the sole assembly corresponding to that of the user's foot, and includes cutouts for softening said reinforcement in the transverse and / or longitudinal direction so as to allow a better progress of the foot, and more sensations in transverse direction.
  • Thus, the reinforcing element 50 has at the front slits 51 in the form of chevrons and extending to the medial edge of the reinforcing element 50. Each slot 51 comprises a large branch 52 oriented substantially along the axis of metatarsophalangeal articulation of the foot and extending over approximately half of the transverse surface of the reinforcing element 50.
  • These slots 52 are intended to facilitate the bending of said reinforcing element 50, in the direction of the axis of metatarsophalangeal articulation, and thus to facilitate the unwinding of the foot.
  • Each large branch 52 of each slot 51 extends to the medial edge of the reinforcing element 50 by a small branch 53 extending substantially 90 ° to the direction of said major branch 52.
  • The purpose of the small branches or slots 53 is to soften the reinforcing element 50 on the medial edge for better feeling of the ground.
  • Small slots 54 oriented in the extension of the slots 52 and therefore symmetrically to the slots 53 with respect to the longitudinal axis L of the reinforcing element 50, extend as for them to the lateral edge of the reinforcing element 50, so as to soften this side edge of the reinforcing element for better feeling of the ground.
  • At the level of the heel, the reinforcing element 50 is subdivided into two branches, respectively medial 55 and lateral 56, so as to soften the reinforcing element 50 in the transverse direction and to provide better sensations, from a medial edge to the other side of the sole and vice versa. At the level of the arch, the reinforcing element is thinned and has straight or slightly concave edges 58.
  • Of course, the form described above of the reinforcing element may be different depending on the desired effects. The form described above is designed specifically for a race application, hence the flexibility in unwinding and cutting to promote sensations.
  • The outsole 40 extends essentially over the entire surface of the sole and has cutouts 41 intended essentially to visualize the reinforcing element 50.
  • The rod reinforcement element 20 is constituted in this case by a substantially U-shaped three-dimensional element 21, comprising at each of its ends a return 22.
  • The U-shaped portion 21 of the rod reinforcing member 20 is intended to surround the heel portion of the midsole 60 and the upper 10 of the shoe, and to be fixed by gluing.
  • Each of the returns 22 of the reinforcing member 20 extends transversely inwardly with respect to the U-shaped portion, so as to abut against the edges 58 of the sole reinforcing member 50 at level of the arch area while leaving a clearance of between 0 and 5mm approximately.
  • The coupling of the reinforcing element 20 to the reinforcing element 50 is effected via the midsole 60 on which these two elements are fixed, for example by gluing.
  • Preferably, the EVA sole includes an indentation corresponding to the profile / contour of the two reinforcing elements 20, 50 and whose depth corresponds to the thickness of said reinforcing elements.
  • During the mounting of the shoe, the two reinforcing elements 20, 50 are put in place in the associated footprints of the midsole 60 and assembled to the latter by gluing. The outsole 40 is also glued to the assembly and the sole 30 thus formed is assembled by gluing to the upper 10 of the boot, the upper part of the U 21 of the reinforcing element 20 being also glued to the upper. .
  • By this construction, via bonding on the midsole 60, a flexible coupling of the stem reinforcing member 30 with the soleing reinforcing member 50 is achieved. In fact, the stem reinforcing member 20 is both a rod reinforcement element 20 and a reinforcement of the sole assembly 30.
  • This flexible coupling of the two types of reinforcements 20, 50 makes it possible to reconcile the contradictory requirements of rigidity, lateral resistance of the foot on uneven ground and flexibility related to the requirements of running.
  • The figure 6 discloses another embodiment in which the rod and sole reinforcement elements are integrated medial and lateral side. In this case, the soleing reinforcing element 150 consists of two medial portions 160, 170 and 180, 190. The medial portion comprises a substantially flat elongate portion 160 extending over half a half, in the longitudinal direction. , sole, and a branch 170 half surrounding the heel medial side. The branch 170 has a vertical tab 171 rising from the flat portion 160 at the area of the arch and rounding with a leg 172 half U around a first half of the heel, medial side. The other portion 180, 190 of the reinforcing member symmetrically comprises a substantially flat elongated portion 180 and extending for half a half, longitudinally, of the sole, and a branch 190 half-circling the side heel. lateral by a vertical leg 192 and a leg in half U 192.
  • The two flat portions 160, 180 have transverse tabs respectively 161, 181, nested one inside the other.
  • The coupling of the two medial and lateral reinforcement portions is carried out as previously via the gluing of each of these two parts on the midsole at their flat portions 160, 180, and at the stem via their branches 170, 190.
  • The coupling is therefore essentially in the longitudinal direction, with an effect at the transverse level according to the length of the transverse tabs 161, 181.
  • This embodiment has the advantage of allowing different stiffnesses of the reinforcing elements 160, 170, and 180, 190, and therefore of providing asymmetrical stiffness / reinforcement on the medial and lateral side depending on the desired effect.

Claims (13)

  1. Shoe comprising:
    - a wear sole (40),
    - a shock absorbing intermediary sole (60),
    - an upper (10),
    - at least one element (20, 170, 190) for reinforcing the upper,
    - at least one element (50, 160, 180) for reinforcing the bottom assembly, characterized in that
    the reinforcing elements are mutually coupled by a flexible coupling at least in the transverse direction via the intermediary sole,
    in that the coupling of the reinforcing elements (50, 160, 180; 20, 170, 190) is carried out substantially in a same plane of the intermediary sole,
    and in that the coupling edges (22, 58; 161, 181) of the reinforcing elements (20, 50; 160, 180), respectively, extend substantially edge to edge.
  2. Shoe according to claim 1, characterized in that each element for reinforcing the bottom assembly and the upper is glued to the intermediary sole (60).
  3. Shoe according to one of claims 1 or 2, characterized in that the intermediary sole (60) is made of EVA.
  4. Shoe according to one of claims 1-3, characterized in that each element (20, 170, 190) for reinforcing the upper is also coupled to the upper.
  5. Shoe according to one of claims 1-4, characterized in that each element for reinforcing the upper comprises at least one arm (21, 172, 192) that at least partially surrounds the rear region of the user's foot.
  6. Shoe according to one of claims 4 or 5, characterized in that the element for reinforcing the upper comprises two arms, the one medial (170), the other lateral (190), each surrounding a medial side and a lateral side, respectively, of the rear region of the user's foot.
  7. Shoe according to claim 6, characterized in that the medial and lateral arms (170, 190), respectively, of the element for reinforcing the upper are associated with a medial and lateral portion (160, 180), respectively, of the element for reinforcing the bottom assembly.
  8. Shoe according to one of claims 6 or 7, characterized in that the mechanical properties of the elements (170, 190) for reinforcing the upper and of the elements (160, 180) for reinforcing the bottom assembly are asymmetrical on the medial and lateral sides, respectively.
  9. Shoe according to one of claims 7 or 8, characterized in that the portions (160, 180), respectively, of the element for reinforcing the bottom assembly comprise transverse lugs (161, 181), respectively, that are nested in one another.
  10. Shoe according to one of claims 1 to 9, characterized in that the coupling edges (22, 58; 161, 181) of the reinforcing elements are spaced apart by a clearance comprised approximately between 0 and 5 mm.
  11. Shoe according to any of claims 1 to 10, characterized in that the intermediary sole comprises a recessed imprint corresponding to the contour profile of the two reinforcing elements (20, 50).
  12. Shoe according to claim 11, characterized in that the depth of the imprint of the intermediary sole corresponds to the thickness of the reinforcing elements (20, 50).
  13. Bottom assembly for a shoe, characterized in that it comprises a wear sole (40), at least one element (50, 160, 180) for reinforcing the bottom assembly, a shock absorbing intermediary sole (60), and at least one element (20, 170, 190) for reinforcing the upper according to any of claims 1 to 12.
EP20030023098 2002-12-11 2003-10-15 Shoe sole Expired - Fee Related EP1428447B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR0216239 2002-12-11
FR0216239A FR2848389B1 (en) 2002-12-11 2002-12-11 Shoe week

Publications (2)

Publication Number Publication Date
EP1428447A1 EP1428447A1 (en) 2004-06-16
EP1428447B1 true EP1428447B1 (en) 2008-08-20

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030023098 Expired - Fee Related EP1428447B1 (en) 2002-12-11 2003-10-15 Shoe sole

Country Status (6)

Country Link
US (1) US7082702B2 (en)
EP (1) EP1428447B1 (en)
AT (1) AT405185T (en)
DE (1) DE60323041D1 (en)
ES (1) ES2312707T3 (en)
FR (1) FR2848389B1 (en)

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Also Published As

Publication number Publication date
FR2848389B1 (en) 2006-02-10
US7082702B2 (en) 2006-08-01
ES2312707T3 (en) 2009-03-01
AT405185T (en) 2008-09-15
FR2848389A1 (en) 2004-06-18
DE60323041D1 (en) 2008-10-02
EP1428447A1 (en) 2004-06-16
US20040111920A1 (en) 2004-06-17

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