EP3405061A1 - Footwear sole - Google Patents
Footwear soleInfo
- Publication number
- EP3405061A1 EP3405061A1 EP17707364.0A EP17707364A EP3405061A1 EP 3405061 A1 EP3405061 A1 EP 3405061A1 EP 17707364 A EP17707364 A EP 17707364A EP 3405061 A1 EP3405061 A1 EP 3405061A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- outsole
- plate
- recess
- forefoot
- longitudinal median
- 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- Withdrawn
Links
Classifications
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/026—Composites, e.g. carbon fibre or aramid fibre; the sole, one or more sole layers or sole part being made of a composite
-
- A—HUMAN NECESSITIES
- A43—FOOTWEAR
- A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
- A43B13/00—Soles; Sole-and-heel integral units
- A43B13/02—Soles; Sole-and-heel integral units characterised by the material
- A43B13/12—Soles with several layers of different materials
- A43B13/122—Soles with several layers of different materials characterised by the outsole or external layer
Definitions
- the present invention relates to a particular structure of an outsole of a sports shoe.
- EP 0 272 082 US Pat. No. 5,052,130, US Pat. No. 5,191,727 and FR 2,993,758 disclose an outsole of composite material which extends over the entire length of the shoe and which can be bent upwards in the front region of the shoe.
- EP 1 100 349 discloses a composite plate having a particular shape extending from the heel to the toes. This plate is higher in the center than at the ends and helps stabilize the lateral movement of the foot.
- Document FR 2 775 875 describes a rigid additional soleplate which may be made of plastics material or of composite fibrous material.
- This additional sole has staggered notches arranged transversely to the length of the sole.
- This additional sole provides increased transverse stiffness for hiking on rough terrain.
- US 4,651,445 discloses a composite material plate in the upper position of a stack of soles of synthetic material, which provides a high elasticity in the direction of unwinding of the foot and a certain lateral stability.
- the outsole of a shoe comprises a multilayer structure comprising a lower layer of synthetic materials, a plate of rigid and elastic materials and a top layer of synthetic materials, the sole comprising a longitudinal median axis delimiting an inner portion of an outer portion, the plate extending from the distal end of the forefoot to the heel bearing zone, while the plate comprises a recess opening toward the distal periphery of the sole.
- the recess is centered or substantially centered with respect to the longitudinal median axis.
- the recess extends rearward, substantially at the level of the central zone of the forefoot.
- the recess is bordered or substantially bordered laterally on either side by a first oblique axis and a second oblique axis, arranged in opposition with respect to the longitudinal median axis, these two oblique axes passing through the proximal end of the outsole and making an angle with the longitudinal median axis of between 2 and 15 degrees, preferably between 3 and 10 degrees.
- the profile of the plate, from front to rear, narrows in width.
- the plate has an upward curvature, raised both at the front and at the back. Let us add that the recess delimits the plate at the level of the forefoot into an inner branch and an outer branch.
- the inner limb extends towards the distal end of the forefoot transversely outwards, forming a transverse bearing zone.
- Figures 1 to 9 are views of an outsole of a left foot shoe, according to one embodiment of the invention.
- Figure la is a front view.
- Figure lb is an internal side view.
- Figure 1a is a view from below, partly in transparency.
- Figure Id is an external side view.
- Figure 1a is a rear view.
- Figure 2 is a top view, partly in transparency.
- FIGS 3 to 9 are sectional views of Figure 1a.
- Figure 3 is a longitudinal sectional view along A, A '.
- Figure 4 is a cross-sectional view along B, B '.
- Figure 5 is a cross-sectional view along C, C.
- Figure 6 is a cross-sectional view along D, D '.
- FIG. 7 is a cross-sectional view along E, E ',
- Figure 8 is a cross-sectional view along F, F '.
- Figure 9 is a cross-sectional view along G, G '.
- a shoe is commonly equipped with an outsole
- the envelope has substantially the shape of the foot of the user, and comprises retaining means, such as laces.
- the upper overcomes the outsole (1) to be recessed by its lower part.
- the stem is, of course, secured to the outsole (1), by any appropriate means known, such as by gluing, and is retained, by its lower part, by a peripheral rim constituted by a wall extending upwards, thus surrounding the lower part of the rod.
- the upper portion of the outsole (1) comprises a central bowl constituted by an upwardly open recessed profile intended to receive the rod, the bowl being formed by the peripheral rim.
- the shoe can be equipped with a glue or removable insole.
- the outsole (1) is curved upwards, both in its front part and in its rear part, as disclosed by the document FR 2 945 916.
- a stride When a user is running long distances, a stride decomposes, first of all by pressing the heel to the ground, followed by the unwinding of the foot on the majority of its lower surface, until a pronounced support of tiptoe.
- This type of stride is different from that of a fast race over short distances, such as during a sprint, where the strides are mainly centered on the tip of the foot.
- a shoe having a curvature such as the feature described above, namely, raised both at the front and back of the shoe, promotes and accentuates the unfolding of the foot on the ground support surface during the strides of the user.
- the outsole (1) may only be curved upwards in its front part, such as the majority of shoes on the market.
- outsole (1) extends forwardly in correspondence of the anterior or distal end of the foot at the toes, towards the center at the arch of the foot, and towards the back in correspondence of the posterior or proximal end of the foot at the heel.
- the outsole (1) as illustrated in Figure 1a and 2, comprises a longitudinal median axis (X, X ') delimiting an inner portion (PI) of an outer portion (PE), while the outer portion (PE) comprises a first oblique axis (W, W) passing through the proximal end (15) of the outsole (1), and making a angle with the longitudinal median axis (X, X ') between 2 and 15 degrees, preferably between 3 and 10 degrees, more preferably between 3 and 7 degrees.
- the inner portion (PI) comprises a second oblique axis (Y, Y ') also passing through the proximal end (15) of the outsole (1) and making an angle with the longitudinal median axis (X, X ') between 2 and 15 degrees, preferably between 3 and 10 degrees, more preferably between 3 and 7 degrees, opposite the first oblique axis (W, W) with respect to the longitudinal median axis (X, X').
- the sole of the foot or the underside of the skeleton of the foot is made up of three parts, namely, from behind forwards, the tarsus, the metatarsus and the phalanges.
- the metatarsal and the phalanges correspond to the forefoot.
- the outer sole (1) according to the invention is in the form of a multilayer structure, comprising a lower layer (2) of synthetic material (s), a plate (3) of rigid (s) material (s) and elastic (s), and an upper layer (4) of synthetic material (s).
- the plate (3) advantageously extends over the entire length or substantially the entire length of the outer sole (1).
- a plate (3) of rigid material (s) (s) and elastic (s) has properties to accumulate energy during its flexion and release this energy during its relaxation.
- This / these material (s) are for example a composite based on woven or non-woven fiber, for example fiberglass, carbon fiber, metal fiber such as aluminum or titanium or a mixture of fibers, such as a mixture of fiberglass and carbon fiber.
- These woven or non-woven fibers are coated with a polymer matrix, such as polyurethane or epoxy resin.
- the composite plate (3) may be made of carbon fibers coated with a polyurethane resin or glass fibers coated with a polyester resin.
- a plate (3) of rigid and elastic material may also be synthetic fibers coated with a polymer resin, for example aramid fibers (kevlar) coated with an epoxy resin.
- a polymer resin for example aramid fibers (kevlar) coated with an epoxy resin.
- the plate (3) may also be made of polymeric materials, such as polycarbonate (PC), polyurethane (PU), acrylonitrile butadiene styrene (ABS) or polyether block amide (PEBA).
- PC polycarbonate
- PU polyurethane
- ABS acrylonitrile butadiene styrene
- PEBA polyether block amide
- the plate (3) is made of carbon fibers coated with a polyurethane matrix.
- the plate (3) is made of polymer material (s).
- the plate (3) has a particular shape, in particular at its distal end and at the zone corresponding to the forefoot (5).
- the plate (3) thus comprises a recess (7) in the form of a cutout in its distal portion, opening towards the outer periphery of the outsole (1), advantageously at the distal periphery at the outer portion (PE ), namely the outer periphery of the forefoot (5).
- this recess (7) is centered or substantially centered with respect to the longitudinal median axis (X, X ') and delimited or substantially delimited laterally by the first oblique axis (W, W) and the second oblique axis (Y, Y '), as illustrated in Figures 1 and 2.
- This recess (7) extends rearward, at its proximal end, substantially between the junction of the corresponding zones of the phalanges and the metatarsus, preferably substantially at the level of the central zone (11) of the forefoot (5). ), more preferably below the central zone (11) of the forefoot (5), while being in the zone corresponding to the metatarsal.
- This recess (7) delimits laterally the upper zone of the plate (3) in two branches (8, 9), namely an inner branch (8) and an outer branch (9).
- the plate (3) is extended towards its distal end in two longitudinal branches (8, 9).
- the distal end of the outer leg (9) is aligned or substantially aligned with the first oblique axis (W, W), while the distal end of the inner leg (8) is aligned or substantially aligned with the second oblique axis (Y, Y ').
- distal end of the outer branch (9) extends at least to the area corresponding to the fifth toe, while the distal end of the inner branch (8) extends at least to the area corresponding to the first toe.
- the distal end of the inner branch is distal end of the inner branch
- the recess (7) extends transversely outwards, preferably to the outer periphery of the sole (1).
- the recess (7) is thus bordered in its distal portion by the transverse zone (12) of the inner branch (8).
- the distal end of the plate (3) namely the distal end of the inner limb (8) is centered or substantially centered on the second oblique axis (Y, Y ').
- the profile of the plate (3) from front to rear, narrows in width, in order to obtain a central and proximal part, corresponding to the zone of the arch and the zone of heel support (10), having greater flexibility with respect to the upper part of the plate corresponding to the forefoot (5).
- This increased flexibility of the plate (3), in the central and proximal zone increases the propulsion capacity of the outsole (1) and therefore the stride of the user during its advance.
- the plate (3) matches the shape of the outer sole (1).
- the plate (3) thus has a curvature, raised both at the front and at the back. The combination of this curvature, favoring the unwinding of the foot, and the particular structure of the plate (3), contributes to increase the propulsion capacity of the outsole (1).
- the central area of the plate (3) corresponding to the area of the arch is substantially rectilinear, see has a slight curvature raised both at the front and rear.
- the profile of the plate (3) is slightly off-axis with respect to the longitudinal median axis (X, X ') of the outer sole (1), directed towards the inner part (PE).
- the plate (3) has a certain transverse curvature, opposite that of the outsole (1) which is commonly directed inwards, in particular at its proximal end, as illustrated in FIGS. 7 and 8.
- the outer sole (1) is a multilayer structure comprising a plate (3) arranged between a lower layer (2) and an upper layer (4).
- the lower layer (2) of the outer sole (1) comprises two types of zones, namely zones hooked (13) of rigid materials, and damping areas (14) of less rigid materials or soft.
- the hooked areas (13) are located at the level of the inner part (PE) before, more precisely at the level of the inner area of the forefoot (5), and arranged laterally on both sides of the longitudinal median axis (X, X '), at the rear portion, at the periphery of the heel support zone (10).
- the damping zones (14) are distributed over the entire lower surface of the outsole (1) in complementarity of the hooked areas (13).
- damping zones (14) allow, as their names indicate, to damp the impacts in contact with the ground, which is all the more important compared to a conventional outsole, due to the presence of the plate ( 3).
- the upper layer (4) preferably extends from the distal end to the proximal end of the outsole (1), but it could be otherwise, the upper layer (4) extends from the central portion to the proximal part.
- the upper layer (4) extends over the entire length of the outer sole (1).
- the upper layer (4) comprises different zones that are produced by differing materials or a material having different densities, for example EVA of different densities.
- the zone corresponding to the forefoot (5) consists of a first material
- the heel support zone (10) consists of a second material.
- the second material has a greater damping capacity than the first material.
- the upper (4) and lower (2) layers are for example polyurethane (PU), polyethylene (PE), polyethylene vinyl acetate (PEVA), preferably polyethylene vinyl acetate.
- PU polyurethane
- PE polyethylene
- PEVA polyethylene vinyl acetate
- the upper (4) and lower (2) layers are made of the same material, but it could be otherwise, the layers (2, 4) are made of different materials.
- the upper (4) and lower (2) layers have a different density, for example EVA of different densities.
- the upper layer (4) is merged with the insole.
- the multilayer structure of the outsole not only provides a spring effect, producing a propulsion at each stride, but also a comfort of use to the user.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1650474A FR3046913B1 (en) | 2016-01-21 | 2016-01-21 | SOLE OF A SHOE |
PCT/FR2017/050100 WO2017125676A1 (en) | 2016-01-21 | 2017-01-17 | Footwear sole |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3405061A1 true EP3405061A1 (en) | 2018-11-28 |
Family
ID=55451465
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17707364.0A Withdrawn EP3405061A1 (en) | 2016-01-21 | 2017-01-17 | Footwear sole |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP3405061A1 (en) |
FR (1) | FR3046913B1 (en) |
WO (1) | WO2017125676A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT202200013177A1 (en) * | 2022-06-22 | 2023-12-22 | Jv Int S R L | Mixture for obtaining shoe soles |
IT202200013165A1 (en) * | 2022-06-22 | 2023-12-22 | Jv Int S R L | New structure of shoe soles |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE17243E (en) * | 1923-05-14 | 1929-03-26 | Apparatus por supporting arches | |
US4651445A (en) | 1985-09-03 | 1987-03-24 | Hannibal Alan J | Composite sole for a shoe |
CA1330485C (en) | 1986-12-15 | 1994-07-05 | Daniel T. Barry | Shoe with spring-like sole member |
US5052130A (en) | 1987-12-08 | 1991-10-01 | Wolverine World Wide, Inc. | Spring plate shoe |
US5191727A (en) | 1986-12-15 | 1993-03-09 | Wolverine World Wide, Inc. | Propulsion plate hydrodynamic footwear |
US5528842A (en) | 1989-02-08 | 1996-06-25 | The Rockport Company, Inc. | Insert for a shoe sole |
FR2775875B1 (en) | 1998-03-11 | 2000-04-21 | Lafuma Sa | WALKING SHOE |
DE19904744B4 (en) * | 1999-02-05 | 2005-11-10 | Adidas International Marketing B.V. | shoe |
DE19919409C1 (en) | 1999-04-28 | 2000-11-02 | Adidas Int Bv | Sports shoe |
FR2794005B1 (en) | 1999-05-26 | 2001-06-29 | Imp Ation De Diffusion Ou Dist | SOLE OF A SHOE |
FR2848389B1 (en) * | 2002-12-11 | 2006-02-10 | Salomon Sa | SHOE WEEK |
US8141272B2 (en) | 2005-05-20 | 2012-03-27 | Bivab, Llc | Shoe sole with pivotal ground engaging plate |
FR2945915A1 (en) | 2009-05-27 | 2010-12-03 | Mermoud Nicolas | IMPROVEMENT FOR SHOES ESPECIALLY FOR SPORTS SHOES. |
DE102012206094B4 (en) | 2012-04-13 | 2019-12-05 | Adidas Ag | Soles for sports footwear, shoes and method of making a shoe sole |
FR2993758B1 (en) | 2012-07-27 | 2015-03-27 | Salomon Sas | IMPROVED SHOE SHOE |
-
2016
- 2016-01-21 FR FR1650474A patent/FR3046913B1/en not_active Expired - Fee Related
-
2017
- 2017-01-17 EP EP17707364.0A patent/EP3405061A1/en not_active Withdrawn
- 2017-01-17 WO PCT/FR2017/050100 patent/WO2017125676A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
FR3046913B1 (en) | 2019-05-31 |
FR3046913A1 (en) | 2017-07-28 |
WO2017125676A1 (en) | 2017-07-27 |
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