EP1972224A1 - Shoe and its bottom assembly - Google Patents

Shoe and its bottom assembly Download PDF

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Publication number
EP1972224A1
EP1972224A1 EP20070005560 EP07005560A EP1972224A1 EP 1972224 A1 EP1972224 A1 EP 1972224A1 EP 20070005560 EP20070005560 EP 20070005560 EP 07005560 A EP07005560 A EP 07005560A EP 1972224 A1 EP1972224 A1 EP 1972224A1
Authority
EP
European Patent Office
Prior art keywords
insert
shoe
characterized
front
layer
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Withdrawn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
EP20070005560
Other languages
German (de)
French (fr)
Inventor
Jean-Michel Challe
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
Application filed by Salomon SAS filed Critical Salomon SAS
Priority to EP20070005560 priority Critical patent/EP1972224A1/en
Publication of EP1972224A1 publication Critical patent/EP1972224A1/en
Application status is Withdrawn legal-status Critical

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Classifications

    • 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
    • A43B23/081Toe stiffeners
    • A43B23/086Toe stiffeners made of impregnated fabrics, plastics or the like
    • A43B23/087Toe stiffeners made of impregnated fabrics, plastics or the like made of plastics

Abstract

The shoe has a rod (10) and an outer bottom assembly (20), where the rod is surmounted above the assembly. An insert having rigidity characteristics is in contact with a top surface of a contact layer or an outer sole (21), where the outer sole or the contact layer is made up of rubber material. A top layer of a comfort layer (22) is arranged under the rod. The insert includes a front portion (33) with a front lift (35) that is placed along the top layer of the comfort layer, where the comfort layer is made up of viscoelastic material such as polyurethrene foam.

Description

  • The invention relates to a shoe including a sport comprising a shaft surmounting an outer soleing made according to a laminated profile in several layers fulfilling distinct functions.
  • Such a shoe is known by the FR 2,685,173 concerning a modular assembly structure comprising from bottom to top:
    • a so-called contact outer layer, made of an adherent material such as rubber or the like, which is intended to provide a good grip on the ground and good resistance to abrasion,
    • an intermediate layer, called "nerve", arranged directly in contact with the upper face of the contact layer, which exhibits controlled characteristics of torsional and flexural rigidity,
    • a so-called comfort upper layer of cushioning material which is disposed directly under the upper, that is to say closer to the foot and which has damping characteristics and / or elasticity with respect to shocks . This last layer is assembled directly on the upper of the shoe.
  • Such a shoe construction and especially its sole provides a modular concept of sole in which each layer performs very distinct functions, the modulation of which provides shoes to meet the different needs to be filled according to the particular sport to the practice of which the shoe is intended.
  • The FR 2,777,429 also discloses a shoe provided with a three-layered sole in which the intermediate layer, called "nerve", has transverse recesses of particular shape intended to provide a stable and stable support of the shoe, and in particular to provide a support in ""edgecatch", that is to say, increased grip in the land in reverse.
  • The object of the present invention is to provide an improvement to the outer sole constructions of the type mentioned above.
  • An object of the present invention is in particular to provide a sole construction which provides a stimulus effect. Such a stimulus effect is interesting for use in running, but also depending on the case for use walk or otherwise.
  • This or these objects are achieved in the shoe according to the invention, which is of the type comprising a rod surmounting an outer sole, comprising from the bottom upwards an outer sole having adhesion characteristics, an insert having controlled characteristics of rigidity, and a top layer of comfort damping material and / or viscoelastic, in that the insert has a front portion up along the upper comfort layer.
  • When walking, running, the insert comes by its front part to compress, or prevent deformation, the comfort layer in the phases of flexion of the foot, because of the additional energy is stored by the layer comfort, this energy being restored during the next phase of relaxation of the foot.
  • The rise of the insert thus makes it possible to obtain, by compressing the comfort layer, an additional stimulus effect, which is added to the stimulus effect associated with the more or less rigid material constituting said insert.
  • In any case the invention will be better understood and other characteristics thereof will be highlighted with the aid of the following description with reference to the attached schematic drawing illustrating by way of nonlimiting example several embodiments. and wherein:
    • the figure 1 is a perspective view of a shoe according to the invention,
    • the figure 2 is an exploded perspective view of the shoe of the figure 1 ,
    • the figure 3 is a perspective bottom view of the shoe from the figure 1 before assembly of the outsole,
    • the figure 4 is a perspective bottom view illustrating the final assembly of the sole assembly,
    • the figure 5 is a view similar to the figure 2 according to a second embodiment,
    • the figure 6 is a perspective bottom view illustrating the final assembly of the sole.
  • The figure 1 represents a shoe 1 according to the invention consisting of a rod 10 and an outer sole 20 surmounted by said rod.
  • In the example shown, the shoe 1 is a shoe intended for running, particularly on uneven ground, and therefore has a relatively low shaft 10 and an outer sole 20 that dampens but is nevertheless low enough so as not to damage the stability of the foot. on uneven ground or on slopes.
  • The rod 10 is provided, in a manner known per se, with a lacing system 11 and a front end 12.
  • The sole assembly 20 comprises, in a manner known per se, an outsole 21 or contact layer of adherent and wear-resistant material such as rubber, an insert 30 constituted in this case by two parts respectively before 33 and rear 31 , and a so-called upper comfort layer 22 which is of damping material such as EVA.
  • This comfort layer 22 may also be made of a viscoelastic material such as elastomer, PU foam.
  • The insert 30 is, in the example shown, consisting of two respectively rear and front portions 31 and 33, but it could obviously be in one part.
  • The rear portion 31 of the insert is not described in detail. In the example shown, this rear portion 31 has a vault shape extending as far as the edges of the outer sole 21 and defining tabs 32 surrounding this outer sole as described in FIG. EP 1 447 019 , this construction being advantageous for hanging on non-flat terrain.
  • In this embodiment a shim 50 of damping material such as EVA, PU foam is interposed between the rear portion 31 of the insert and the contact layer 21 (cf. figure 3 ), this shim 50 could be removed so as to have a direct contact of 31 and 21.
  • Of course, this rear portion 31 of the insert could have a completely different shape / construction depending on the desired result and / or type of shoe.
  • The insert 30 is preferably made of an elastically deformable material, that is to say a relatively rigid material and having controlled torsional and flexural stiffness characteristics, and having a Young's modulus E greater than 40 MPa.
  • The preferred materials for this insert are:
    • polyurethane (PUR, TPU) loaded or not loaded with Young's modulus E greater than 40 MPa,
    • polyamide (PA) loaded or unloaded,
    • polyethylene and generally all synthetic materials having a Young's modulus E greater than 40 MPa.
  • "Composite" materials, for example based on fiberglass / carbon and synthetic resin having a Young's modulus E greater than 50 MPa are also conceivable.
  • It is also possible to envisage the use of metallic materials and, for example, aluminum alloys for certain parts of the insert 30.
  • For each insert 30 or insert portion 31, 33, the thickness will be a function of the desired degree of elasticity and the Young's modulus of the selected material.
  • Depending on the desired applications the two insert parts 30, 31 may have similar or different stiffnesses, in the latter case the insert portion 30 may be chosen steeper than the insert portion 31, or vice versa.
  • In the case shown and as shown particularly by figures 3 and 4 , the rear portion 31 of the insert is extended forward by two V-shaped branches 32a deviating and having a reduced thickness relative to the remainder of said rear portion 31.
  • The front portion 33 of the insert also has two horizontal branches 34 having slightly divergent shapes corresponding to those of the branches 32a of the rear portion 31 of the insert. These two branches 34 extend forwards by a vertical rise 35 which covers the upper comfort layer 22 and the front end 12 of the rod 10 (cf. figure 1 ). In the example shown, the front lift 35 of the insert extends only at the end of the boot, ie not on the sides thereof. Depending on the case, it can also go up on the sides.
  • Having the insert 30 in two parts 31, 33 reduces the number of molds necessary for the realization thereof. Indeed by overlapping of the branches 32a and 34 respectively rear and front portions of the insert, one can use the same type of insert for several shoe sizes. It suffices to have a recovery function of the length of the shoe and to proceed to the bonding. The two insert parts 30, 31 can also be connected together without overlapping or simply butted.
  • The branches 34 also have a reduced thickness in their area 34a of overlap with the branches 32a, so as to avoid any discontinuity in the insert. Finally, the branches 34 have in the horizontal zone an enlargement 34b can be visible on the sides of the sole after the shoe mounted. The vertical lift 35 has, in the example shown, the shape of an inverted vertical U connecting the two horizontal branches 34.
  • The Figures 1 to 4 illustrate a first embodiment in which a first subset comfort layer 22-rear portion 31 of the insert is made by gluing (cf. figure 3 ).
  • This first subassembly is assembled by gluing to the rod 10 provided with a front end 12 and a strobel sole 13, said rod being mounted on a shape (not shown in the drawing).
  • The front portion 33 of the insert is then assembled, by gluing, both to the stem and to the first subset of the comfort layer 22 - rear portion 31 of the insert, as shown in FIG. figure 4 .
  • During this assembly, the front portion 35 of the portion of the front insert 33 traps both the comfort layer 22 and the rod 10.
  • Finally the outer sole 21 or contact layer is assembled by gluing on the assembly thus formed.
  • With the construction according to the invention, the reinforcing front portion 33 comes by its ascent before forcing both the layer of damping material 22 and the rod 10.
  • During a bending movement of the boot occurring during a bearing movement of the front part of the foot on the ground, the material constituting the comfort layer 22 is constrained and prevented from expanding, thereby the end of the bending movement, said material of this layer 22 will tend to return to its original shape and release an energy that will be added to that restored by the elastic material constituting the front portion 33 of the insert. The stiffness of the rod can also affect the energy release.
  • By a simple construction thus significantly increases the amount of energy restored at the end of the bending movement, amount of energy which results in an additional boost appreciable in stroke.
  • Of course the construction mentioned above is not limited to a race application and can also be of great interest in other areas and in particular in a walk or other application.
  • The figures 5 and 6 illustrate another embodiment of the invention in which similar or equivalent elements will be designated by the same references.
  • In fact in this second embodiment, the shoe has exactly the same elements, the only difference residing in the assembly mode thereof.
  • In this case the front portion 33 of the insert is a separate subassembly with the front end 12 of the upper of the shoe.
  • This subassembly can be made by bonding these two elements or by overmolding the front end 12 on the front portion of the insert 33, or vice versa.
  • In this second embodiment, the assembly steps are slightly different. Indeed as shown on the figure 5 , we first realize three subsets:
    • a first subassembly constituted by the rod 10 mounted on shape but without a front end,
    • a second subassembly constituted by the front end piece 12 and the front insert part 33,
    • and a third subassembly constituted by the comfort layer 22 and the rear portion 31 of insert.
  • The second subassembly 12-33 is positioned and assembled on the rod by gluing and then the third subassembly is put in place and glued between the rod and the second subassembly as indicated by the arrow F on the figure 6 .
  • This second method of assembly has the advantage that the positioning of the insert front portion 33 relative to the rod 10 and to the entire back 22-partoe comfort layer 31 insert is easier.
  • Then the outer sole 21 is glued as shown on the figure 4 .
  • Of course, the present invention is not limited to the embodiments described above by way of non-limiting example but encompasses all similar or equivalent embodiments.

Claims (10)

  1. Shoe comprising a rod (10) and an outer sole (20), the upper (10) surmounting the outer sole (20), the outer sole (20) comprising from bottom to top:
    an outer sole (21) or contact layer of adherent material,
    an insert (30) having rigidity characteristics arranged at least partly in contact with the upper face of the contact layer (21),
    an upper comfort layer (22) disposed directly under the stem,
    characterized in that the insert (30) has a front portion (33) having a lift (35) along the upper comfort layer (22).
  2. Shoe according to claim 1, characterized in that the front lift (35) of the insert also rises along the shaft (10) of the shoe.
  3. Shoe according to any one of claims 1 or 2, characterized in that the front lift (35) of the portion of the front insert (33) extends only at the end of the shoe.
  4. Shoe according to any one of claims 1 to 3, characterized in that the insert (30) is in two parts, respectively before (33) and rear (31).
  5. Shoe according to one of claims 1 to 3, characterized in that the front portion of the insert is steeper than the rear insert portion (31).
  6. Shoe according to any one of claims 1 to 3, characterized in that the rear portion (31) of the insert is steeper than the front portion (30) of the insert.
  7. Shoe according to any one of claims 2 to 6, characterized in that the comfort layer is of a damping or viscoelastic material.
  8. Shoe according to claim 1 to 7, characterized in that the rod (10) has at its front end a front end (12).
  9. Shoe according to claim 8, characterized in that the front end (12) and the front portion (33) of the insert form a subassembly.
  10. Shoe according to claim 9, characterized in that the front end (12) is overmolded on the front portion (33) of the insert.
EP20070005560 2007-03-19 2007-03-19 Shoe and its bottom assembly Withdrawn EP1972224A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20070005560 EP1972224A1 (en) 2007-03-19 2007-03-19 Shoe and its bottom assembly

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20070005560 EP1972224A1 (en) 2007-03-19 2007-03-19 Shoe and its bottom assembly

Publications (1)

Publication Number Publication Date
EP1972224A1 true EP1972224A1 (en) 2008-09-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20070005560 Withdrawn EP1972224A1 (en) 2007-03-19 2007-03-19 Shoe and its bottom assembly

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EP (1) EP1972224A1 (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685173A1 (en) 1991-12-24 1993-06-25 Salomon Sa Multilayer sport shoe sole.
EP0887027A1 (en) * 1997-06-27 1998-12-30 Salomon S.A. Multilayer sole coupled to a reinforcement of the shoe upper
FR2777429A1 (en) 1998-04-21 1999-10-22 Salomon Sa Shoe sole with deformable structure
EP1428444A1 (en) * 2002-12-11 2004-06-16 Salomon S.A. Climbing shoe
EP1447019A1 (en) 2003-02-14 2004-08-18 Salomon S.A. Shoe sole
EP1607015A1 (en) * 2004-06-01 2005-12-21 Wolverine World Wide, Inc. Footwear construction and related method of manufacture
WO2005120275A2 (en) * 2004-06-08 2005-12-22 Keen Llc Footwear with multi-piece midsole
FR2898252A1 (en) * 2006-03-07 2007-09-14 Salomon Sa Sports shoe for e.g. running, has outer bottom with outer sole or contact layer made of adherent material, where insert with front and rear part has rigid characteristics arranged partly in contact with upper surface of sole

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2685173A1 (en) 1991-12-24 1993-06-25 Salomon Sa Multilayer sport shoe sole.
EP0887027A1 (en) * 1997-06-27 1998-12-30 Salomon S.A. Multilayer sole coupled to a reinforcement of the shoe upper
FR2777429A1 (en) 1998-04-21 1999-10-22 Salomon Sa Shoe sole with deformable structure
EP1428444A1 (en) * 2002-12-11 2004-06-16 Salomon S.A. Climbing shoe
EP1447019A1 (en) 2003-02-14 2004-08-18 Salomon S.A. Shoe sole
EP1607015A1 (en) * 2004-06-01 2005-12-21 Wolverine World Wide, Inc. Footwear construction and related method of manufacture
WO2005120275A2 (en) * 2004-06-08 2005-12-22 Keen Llc Footwear with multi-piece midsole
FR2898252A1 (en) * 2006-03-07 2007-09-14 Salomon Sa Sports shoe for e.g. running, has outer bottom with outer sole or contact layer made of adherent material, where insert with front and rear part has rigid characteristics arranged partly in contact with upper surface of sole

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