EP3629802B1 - Sohlenstruktur mit lochanordnung zur bildung einer auxetischen struktur - Google Patents

Sohlenstruktur mit lochanordnung zur bildung einer auxetischen struktur Download PDF

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Publication number
EP3629802B1
EP3629802B1 EP18734995.6A EP18734995A EP3629802B1 EP 3629802 B1 EP3629802 B1 EP 3629802B1 EP 18734995 A EP18734995 A EP 18734995A EP 3629802 B1 EP3629802 B1 EP 3629802B1
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EP
European Patent Office
Prior art keywords
sole
holes
component
thickness
sole component
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.)
Active
Application number
EP18734995.6A
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English (en)
French (fr)
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EP3629802A1 (de
Inventor
Tory M. Cross
Bryan N. Farris
Elizabeth Langvin
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Nike Innovate CV USA
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Nike Innovate CV USA
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Filing date
Publication date
Priority claimed from US15/604,705 external-priority patent/US10716360B2/en
Application filed by Nike Innovate CV USA filed Critical Nike Innovate CV USA
Publication of EP3629802A1 publication Critical patent/EP3629802A1/de
Application granted granted Critical
Publication of EP3629802B1 publication Critical patent/EP3629802B1/de
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    • 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
    • A43B13/04—Plastics, rubber or vulcanised fibre
    • A—HUMAN NECESSITIES
    • A43—FOOTWEAR
    • A43B—CHARACTERISTIC FEATURES OF FOOTWEAR; PARTS OF FOOTWEAR
    • A43B1/00—Footwear characterised by the material
    • A43B1/0009—Footwear characterised by the material made at least partially of alveolar or honeycomb material
    • 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
    • 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
    • A43B13/125—Soles with several layers of different materials characterised by the midsole or middle layer
    • 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
    • A43B13/181—Resiliency achieved by the structure of the sole
    • A43B13/186—Differential cushioning region, e.g. cushioning located under the ball of the foot
    • 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
    • A43B13/187—Resiliency achieved by the features of the material, e.g. foam, non liquid materials
    • A43B13/188—Differential cushioning regions

Definitions

  • the present disclosure relates to sole structures with holes having an auxetic configuration.
  • Articles of footwear typically have at least two major components, an upper that provides the enclosure for receiving the wearer's foot, and a sole secured to the upper that is the primary contact to the ground or playing surface.
  • the footwear may also use some type of fastening system, for example, laces or straps or a combination of both, to secure the footwear around the wearer's foot.
  • the sole may comprise three layers-an inner sole, a midsole and an outer sole.
  • the outer sole is the primary contact to the ground or the playing surface.
  • the outer sole generally carries a tread pattern and/or cleats or spikes or other protuberances that provide the wearer of the footwear with improved traction suitable to the particular athletic, work or recreational activity, or to a particular ground surface.
  • the present disclosure describes sole structures for an article of footwear.
  • FIG. 1 is an isometric view of an embodiment of an article of footwear 100.
  • the article of footwear 100 has the form of an athletic shoe.
  • the provisions discussed herein for article of footwear 100 could be incorporated into various other kinds of footwear including, but not limited to: basketball shoes, hiking boots, soccer shoes, football shoes, sneakers, running shoes, cross-training shoes, rugby shoes, baseball shoes as well as other kinds of shoes.
  • the provisions discussed herein for article of footwear 100 could be incorporated into various other kinds of non-sports related footwear, including, but not limited to: slippers, sandals, high heeled footwear, and loafers.
  • article of footwear 100 also referred to simply as article 100.
  • article 100 may incorporate a corresponding article of footwear (e.g., a right article of footwear when article 100 is a left article of footwear) that may share some, and possibly all, of the features of article 100 described herein and shown in the figures.
  • the embodiments may be characterized by various directional adjectives and reference portions. These directions and reference portions may facilitate in describing the portions of an article of footwear. Moreover, these directions and reference portions may also be used in describing sub-components of an article of footwear (e.g., directions and/or portions of an inner sole component, a midsole component, an outer sole component, an upper or any other components).
  • longitudinal refers to a direction extending a length of a component (e.g., an upper or sole component).
  • the longitudinal direction LG may extend from a forefoot portion to a heel portion of the component.
  • lateral refers to a direction extending along a width of a component. In other words, the lateral direction LT may extend between a medial side and a lateral side of a component.
  • the term "vertical” as used throughout this detailed description and in the claims refers to a direction generally perpendicular to a lateral and longitudinal direction.
  • the vertical direction V may extend from the ground surface upward.
  • the vertical direction V is perpendicular to the lateral direction LT and the longitudinal direction LG.
  • the lateral direction LT is perpendicular to the longitudinal direction LG.
  • the term “inner” refers to a portion of an article disposed closer to an interior of an article, or closer to a foot when the article is worn.
  • the term “outer” refers to a portion of an article disposed further from the interior of the article or from the foot.
  • the inner surface of a component is disposed closer to an interior of the article than the outer surface of the component.
  • the article 100 may be characterized by a number of different regions or portions.
  • the article 100 could include a forefoot portion, a midfoot portion, a heel portion and an ankle portion.
  • components of article 100 could likewise comprise corresponding portions.
  • article 100 may be divided into an article forefoot portion 10, an article midfoot portion 12 and an article heel portion 14.
  • the article forefoot portion 10 may be generally associated with the toes and joints connecting the metatarsals with the phalanges.
  • the article midfoot portion 12 may be generally associated with the arch of a foot.
  • the article heel portion 14 may be generally associated with the heel of a foot, including the calcaneus bone.
  • the article 100 may also include an ankle portion 15 (which may also be referred to as a cuff portion).
  • the article 100 may include an article lateral side 16 and an article medial side 18.
  • the article lateral side 16 and the article medial side 18 may be opposing sides of the article 100.
  • both the article lateral side 16 and the article medial side 18 may extend through the article forefoot portion 10, the article midfoot portion 12, the article heel portion 14, and ankle portion 15.
  • FIG. 2 illustrates an exploded isometric view of an embodiment of article of footwear 100.
  • FIGS. 1-2 illustrate various components of article of footwear 100, including an upper 102 and a sole structure 103.
  • the upper 102 may be any type of upper.
  • the upper 102 may have any design, shape, size and/or color.
  • upper 102 could be a high top upper that is shaped to provide high support on an ankle.
  • the upper 102 could be a low top upper.
  • the upper 102 includes an ankle opening 114 that provides entry for the foot into an interior cavity of the upper 102.
  • the upper 102 may also include a tongue (not shown) that provides cushioning and support across the instep of the foot.
  • Some embodiments may include fastening provisions, including, but not limited to: laces, cables, straps, buttons, zippers as well as any other provisions known in the art for fastening articles.
  • a lace 125 may be applied at a fastening region of upper 102.
  • Some embodiments may include uppers that extend beneath the foot, thereby providing 360-degree coverage at some regions of the foot. However, other embodiments need not include uppers that extend beneath the foot. In other embodiments, for example, the 102 upper could have a lower periphery joined with a sole structure and/or sock liner.
  • the upper 102 could be formed from a variety of different manufacturing techniques resulting in various kinds of upper structures.
  • the upper 102 could have a braided construction, a knitted (e.g., warp-knitted) construction or some other woven construction.
  • upper 102 may be a knitted upper.
  • the sole structure 103 may be configured to provide traction for the article 100. In addition to providing traction, the sole structure 103 may attenuate ground reaction forces when compressed between the foot and the ground during walking, running or other ambulatory activities.
  • the configuration of the sole structure 103 may vary significantly in different embodiments to include a variety of conventional or non-conventional structures.
  • the sole structure 103 can be configured according to one or more types of ground surfaces on which sole structure 103 may be used. Examples of ground surfaces include, but are not limited to: natural turf, synthetic turf, dirt, hardwood flooring, as well as other surfaces.
  • the sole structure 103 is secured to the upper 102 and extends between the foot and the ground when the article 100 is worn.
  • the sole structure 103 may include different components.
  • the sole structure 103 may include an inner sole component 120, a midsole component 122, and a plurality of outer sole members 124.
  • the inner sole component 120 and/or the outer sole members 124 may be optional.
  • the midsole component 122 is a monolithic (i.e., one-piece) structure. It is envisioned, however, that the midsole component 122 may include two or more interconnected parts. In the present disclosure, the midsole component 122 may be simply referred to as the sole component.
  • the inner sole component 120 may be configured as an inner layer for a midsole.
  • the inner sole component 120 may be integrated, or received, into a portion of the midsole component 122.
  • the inner sole component 120 could function as an insole layer and/or as a strobel layer.
  • the inner sole component 120 could be joined (e.g., stitched or glued) to a lower portion 104 of the upper 102 for purposes of securing the sole structure 103 to the upper 102.
  • the inner sole component 120 may have an inner surface 132 and an outer surface 134.
  • the inner surface 132 may generally be oriented towards the upper 102.
  • Outer surface 134 may be generally oriented towards midsole component 122.
  • a peripheral sidewall surface 136 may extend between inner surface 132 and outer surface 134.
  • the midsole component 122 may be configured to provide cushioning, shock absorption, energy return, support, as well as possibly other provisions. To this end, the midsole component 122 may have a geometry that provides structure and support for the article 100. Specifically, the midsole component 122 may be seen to have a lower portion 140 and a sidewall portion 142. The sidewall portion 142 may extend around the entire periphery 144 of the midsole component 122. As seen in FIG. 1 , sidewall portion 142 may partially wrap up the sides of the article 100 to provide increased support along the base of the foot.
  • the midsole component 122 may further include an inner surface 150 and an outer surface 152 opposite the inner surface 150.
  • the inner surface 150 may be generally oriented towards the upper 102, while the outer surface 152 may be oriented outwardly (i.e., away from the upper 102).
  • the midsole component 122 may define a central recess 148 disposed in inner surface 150.
  • the central recess 148 may generally be sized and configured to receive the inner sole component 120.
  • the midsole component 122 includes a plurality of holes 200, at least some of which may extend through the entire thickness of midsole component 122.
  • the holes 200 may be blind holes and/or thru-holes.
  • the holes 200 extend from at least one of the inner surface 150 or the outer surface 152. In the exemplary embodiment shown in FIG. 2 , some of the holes 200 are visible within central recess 148.
  • the holes 200 of the midsole component 122 arranged to form an auxetic structure.
  • the midsole component 122 when the midsole component 122 is under longitudinal tension, the midsole component 122 expands in both the longitudinal direction LG and the lateral direction LT, and when the midsole component 122 is under lateral tension, the midsole component 122 expands in both the lateral direction LT and the longitudinal direction LG.
  • the particular size, shape, number, spacing, and depth of the holes 200 in the midsole component 122 impacts the particular response that the holes 200 and the midsole component 122 has to the applied force.
  • the midsole component 122 may generally incorporate various provisions associated with midsoles.
  • a midsole component may be formed from a polymer foam material that attenuates ground reaction forces (i.e., provides cushioning) during walking, running, and other ambulatory activities.
  • the midsole component 122 may also include fluid-filled chambers, plates, moderators, or other elements that further attenuate forces, enhance stability, or influence the motions of the foot, for example.
  • FIG. 3 illustrates a bottom view of sole structure 103.
  • the midsole component 122 may be simply referred to as the sole component.
  • the midsole component 122 includes a sole forefoot portion 121, a sole heel portion 123, and a sole midfoot portion 127 disposed between the sole heel portion 123 and the forefoot portion 121.
  • the sole structure 103 may include four discrete outer sole members 124.
  • the sole structure 103 includes a first outer sole member 160, a second outer sole member 162, a third outer sole member 164, and a fourth outer sole member 166.
  • the exemplary embodiment includes four different outer sole members 124, other embodiments could include any other number of outer sole members 124.
  • only a single outer sole member 124 may be present. In still another embodiment, only two outer sole members 124 may be used. In still another embodiment, only three outer sole members 124 could be used. In still other embodiments, five or more outer sole members 124 could be used. In yet other embodiments, the sole structure 103 may not include outer sole members 124.
  • any of the outer sole members 124 may be configured as a ground contacting member.
  • the outer sole member 124 could include properties associated with outsoles, such as durability, wear-resistance and increased traction.
  • the outer sole member 124 could include properties associated with a midsole, including cushioning, strength and support.
  • the outer sole members 124 may be configured as outsole-like members that enhance traction with a ground surface while maintaining wear resistance.
  • the locations of one or more outer sole members 124 could vary. In some embodiments, one or more outer sole members 124 could be disposed in the forefoot portion of the sole structure 103. In other embodiments, one or more outer sole members 124 could be disposed in the midfoot portion of a sole structure 103. In still other embodiments, one or more outer sole members could be disposed in a heel portion of a sole structure. In an exemplary embodiment, the first outer sole member 160 and the second outer sole member 162 may be disposed in forefoot portion of sole structure 103. More specifically, the first outer sole member 160 may be disposed on the medial side of the sole structure 103, while the second outer sole member 162 may be disposed on the lateral side of the sole structure 103.
  • the third outer sole member 164 and the fourth outer sole member 166 may be disposed in the heel portion of the sole structure 103. More specifically, the third outer sole member 164 may be disposed on the lateral side of the sole structure 103, and the fourth outer sole member 166 may be disposed on the medial side of the sole structure 103. Furthermore, the first outer sole member 160 and the second outer sole member 162 may be spaced apart from one another in the center of forefoot portion of the sole structure 103, while the third outer sole member 164 and the fourth outer sole member 166 may be spaced apart from one another in the center of the heel portion of the sole structure 103.
  • This exemplary configuration provides outer sole members 124 at areas of increased ground contact during various lateral and medial cuts, so as to enhance traction during these motions.
  • first outer sole member 160 may be the largest outer sole member 124 of plurality of outer sole members 124.
  • second outer sole member 162 may be substantially smaller than first outer sole member 160, thereby enhancing traction more on the medial side of the sole structure 103 than on the lateral side in forefoot portion of the sole structure 103.
  • the third outer sole member 164 and the fourth outer sole member 166 are both widest along a rearward edge 109 of sole structure 103, and taper slightly towards the midfoot portion of the sole structure 103.
  • the first outer sole member 160 may be seen to have an inner surface 170 and an outer surface 172.
  • the inner surface 170 may generally be disposed against the midsole component 122.
  • the outer surface 172 may face outwardly and may be a ground contacting surface.
  • the remaining outer sole members 124 may likewise include corresponding inner and outer surfaces that have similar orientations with respect to the midsole component 122.
  • the inner sole component 120 may be disposed within the central recess 148 of the midsole component 122. More specifically, the outer surface 134 of the inner sole component 120 may be oriented towards, and be in contact with, the inner surface 150 of the midsole component 122. Furthermore, in some cases, a peripheral sidewall surface 136 may also contact inner surface 150 along an inner recess sidewall 149. In addition, the outer sole members 124 may be disposed against the outer surface 152 of the midsole component 122. For example, the inner surface 170 of the first outer sole member 160 may face towards, and be in direct contact with, the outer surface 152 of the midsole component 122. In some embodiments, when assembled, the midsole component 122 and the inner sole component 120 could comprise a composite midsole assembly, or dual layered midsole assembly.
  • the upper 102 and the sole structure 103 could be joined in various ways.
  • the upper 102 could be joined to the inner sole component 120, e.g., using an adhesive or by stitching.
  • the upper 102 could be joined to the midsole component 122, for example, along the sidewall portion 142.
  • the upper 102 could be joined with both the inner sole component 120 and midsole component 122.
  • these components may be joined using any methods known in the art for joining sole components with uppers, including various lasting techniques and provisions (e.g., board lasting, slip lasting, etc.).
  • the attachment configurations of various components of article 100 could vary.
  • the inner sole component 120 could be bonded or otherwise attached to midsole component 122.
  • Such bonding or attachment could be accomplished using any known methods for bonding components of articles of footwear, including, but not limited to: adhesives, films, tapes, staples, stitching, or other methods.
  • it is contemplated that the inner sole component 120 may not be bonded or attached to the midsole component 122, and instead could be free-floating.
  • the inner sole component 120 may have a friction fit with the central recess 148 of the midsole component 122.
  • the outer sole members 124 may be likewise be bonded or otherwise attached to the midsole component 122. Such bonding or attachment could be accomplished using any known methods for bonding components of articles of footwear, including, but not limited to: adhesives, films, tapes, staples, stitching, or other methods.
  • two or more of the inner sole component 120, the midsole component 122 and/or the outer sole members 124 could be formed and/or bonded together during a molding process.
  • the inner sole component 120 upon forming the midsole component 122, the inner sole component 120 could be molded within the central recess 148.
  • Embodiments can include provisions to facilitate expansion and/or adaptability of a sole structure during dynamic motions.
  • the sole structure is configured with auxetic provisions.
  • one or more components of the sole structure are capable of undergoing auxetic motions (e.g., expansion and/or contraction).
  • the sole structure 103 as shown in FIGS. 1-5 and as described further in detail below has an auxetic structure or configuration.
  • Sole structures comprising auxetic structures are described in Cross, U.S. patent application Ser. No. 14/030,002, filed Sep. 18, 2013 , now U.S. Patent No. 9,402,439 , and entitled “Auxetic Structures and Footwear with Soles Having Auxetic Structures” (the “Auxetic Structures application”).
  • auxetic materials have a negative Poisson's ratio, such that when they are under tension in a first direction, their dimensions increase both in the first direction and in a second direction orthogonal or perpendicular to the first direction. This property of an auxetic is illustrated in FIGS. 4-7 and is described below.
  • the midsole component 122 has a length LGT extending along the longitudinal direction LG and a width W extending along the lateral direction LT.
  • the lateral direction LT is perpendicular to the longitudinal direction LG.
  • the sole structure 103 may include a plurality of holes 200.
  • the term "hole” refers to any hollowed area or recessed area in a component.
  • a hole may be a through hole (i.e., a thru-hole), in which the hole extends between two opposing surfaces of a component.
  • a hole may be a blind-hole, in which the hole may not extend through the entire thickness of the component and may therefore only be open on one side.
  • a component may utilize a combination of through holes and blind-holes.
  • hole may be used interchangeably in some cases with “aperture” or "recess.”
  • the sole structure 103 may be further associate with a plurality of discrete sole portions 320.
  • sole portions 320 comprise the portions of sole structure 103 that extend between plurality of holes 200. It may also be seen that plurality of holes 200 extend between sole portions 320.
  • each hole may be surrounded by a plurality of sole portions, such that the boundary of each hole may be defined by the edges of the sole portions. This arrangement between holes (or apertures) and sole portions, is discussed in further detail in the Auxetic Structures application.
  • the holes 200 may extend through a majority of the midsole component 122.
  • plurality of holes 200 may extend through the sole forefoot portion 121, the sole midfoot portion 127, and the sole heel portion 123 of the midsole component 122.
  • the holes 200 may extend along a majority of the length LGT and the width W of the midsole component 122. In other embodiments, plurality of holes 200 may not extend through each of these portions.
  • the holes 200 may also extend through plurality of the outer sole members 124.
  • each of the first outer sole member 160, the second outer sole member 162, the third outer sole member 164 and the fourth outer sole member 166 includes two or more holes.
  • one or more outer sole members may not include any holes.
  • the geometry of one or more holes could vary. Examples of different geometries that could be used for an auxetic sole structure are disclosed in the Auxetic Structures application. Moreover, embodiments could also utilize any other geometries, such as utilizing sole portions with parallelogram geometries or other polygonal geometries that are arranged in a pattern to provide the sole with an auxetic structure.
  • some of the holes 200 have a tri-star geometry, including three arms or points extending from a common center.
  • at least some of the holes 200 may be shaped as an isotoxal polygon to provide the midsole component 122 with an auxetic configuration.
  • holes 200 may be shaped as an auxetic hexagon (i.e., a concave hexagon) to provide polygon to provide the midsole component 122 with an auxetic configuration. At least some of the holes 200 may be shaped as liner slits and arranged in a cross pattern. The shape of the holes 200 may vary as a function of the thickness of the midsole component 122 (or any other sole component) and/or the density of the sole material to optimize sole cushioning.
  • the holes 200 in the sole heel portion 123 may be shaped as an isotoxal polygon
  • the holes 200 in the sole midfoot portion 127 may be shaped as an auxetic hexagon (i.e., a concave hexagon)
  • the holes 200 in the sole forefoot portion 121 may be shaped as liner slits and arranged in a cross pattern.
  • each sole portion could also vary. Examples of different geometries that could be used for an auxetic sole structure are disclosed in the Auxetic Structures application. It may be understood that the geometry of a sole portion may be determined by the geometry of the holes in an auxetic pattern, and vice versa In the exemplary embodiment, each sole portion has an approximately triangular geometry.
  • the holes 200 may be arranged on sole structure 103 in an auxetic pattern, or auxetic configuration.
  • the holes 200 are arranged to form an auxetic structure. Therefore, the holes 200 may be arranged on the midsole component 122 and/or outer sole members 124 in a manner that allows those components to undergo auxetic motions, such as expansion or contraction.
  • FIGS. 4-7 An example of auxetic expansion, which occurs as the result of the auxetic configuration of plurality of holes 200, is shown in FIGS. 4-7 .
  • the sole structure 103 is in a non-tensioned state. In this state, the holes 200 have an untensioned area.
  • region 400 of midsole component 122 is shown, where region 400 includes a subset of holes 200.
  • the sole structure 103 undergoes auxetic expansion. That is, the sole structure 103 expands along direction 410, as well as in a second direction 412 (e.g., the lateral direction LT) that is perpendicular to direction 410.
  • a second direction 412 e.g., the lateral direction LT
  • the representative region 400 is seen to expand in both directions 410 and direction 412 (e.g., the longitudinal direction LG and the lateral direction LT) simultaneously, as the holes 200 increase in size.
  • Embodiments can include provisions for varying the degree to which some portions of a sole structure (including portions of a midsole component and/or outer sole members) may undergo auxetic expansion. Because expansion of the sole structure may result in increased surface contact and/or increased flexibility for regions of the sole structure, varying the degree to which different regions or portions expand (or contract) under tension (or compression) may allow the traction properties and/or flexibility of those different regions to be tuned. Varying the degree to which a midsole component undergoes auxetic expansion can be achieved by varying the properties of different openings. For example, embodiments of a midsole component may include some through holes and some blind holes, as through holes may generally expand more (relative to their initial configuration) than blind holes during auxetic motions.
  • the midsole component 122 has a thickness T extending along a vertical direction V.
  • the thickness T of the midsole component 122 is defined from the inner surface 150 to the outer surface 152 of the midsole component 122.
  • the vertical direction V is perpendicular to the lateral direction LT and the longitudinal direction LG.
  • the thickness T of the midsole component 122 varies along the length LGT of the midsole component 122 to provide different applied force responses in different regions along the length LGT of the midsole component 122.
  • the thickness T of the midsole component 122 varies along the longitudinal direction LG to provide different applied force responses in different regions along the longitudinal direction LG.
  • Injection molding or 3D printing may be used to manufacture the midsole component 122 with varying thickness.
  • the holes 200 and its corresponding auxetic configuration may be matched to the thickness T of the midsole component 122.
  • the holes 200 (and the corresponding auxetic configuration) in a relatively thick region of the midsole component 122 may be different than the holes 200 (and the corresponding auxetic configuration) in a relatively thin region of the midsole component 122.
  • the thickness T of the midsole component 122 may be greater at the sole heel portion 123 than at the sole forefoot portion 121.
  • the sole heel portion 123 may have a heel thickness HT defined from the inner surface 150 to the outer surface 152
  • the sole forefoot portion 121 has a forefoot thickness FT defined from the inner surface 150 to the outer surface 152.
  • the heel thickness HT is greater than the forefoot thickness FT in order to provide optimal cushioning for a hard heel striker.
  • the holes 200 of the midsole component 122 arranged in an auxetic configuration.
  • the stability of the hard heel striker may be maximized by matching the relatively thick sole heel portion 123 with a particular type of auxetic configuration of the holes 200.
  • the thickness T of the midsole component 122 may be greater at the sole heel portion 123 than at the midfoot portion 127.
  • the sole midfoot portion 127 has a midsole thickness MT defined from the inner surface 150 to the outer surface 152.
  • the heel thickness HT may be greater than midsole thickness MT in order to maximize cushioning at the sole heel portion 123 and maximizing comfort during a runner stride.
  • the heel thickness HT may be greater than the midsole thickness and the forefoot thickness FT in order to maximize comfort during the entire heel-to-toe stride.
  • the thickness T of the midsole component 122 may continuously decrease from the sole heel portion 123 to the sole forefoot portion 121 to provide optimal cushioning while enhancing the energy return at the sole forefoot portion 121.
  • the sole heel portion 123 may have a maximum sole thickness MXT at a rearmost extent 129 of the midsole component 122
  • the sole forefoot portion 121 may have a minimum sole thickness MNT at a forwardmost extent 131 of the midsole component 122.
  • the maximum sole thickness MXT may range between fifteen (15) millimeters and ten (10) millimeters
  • the minimum sole thickness MNT may range between the ten (10) millimeters and five (5) millimeters.
  • the thickness T of the midsole component 122 may decrease linearly from the sole heel portion 123 to the sole forefoot portion 121 as a function of the length LGT of the midsole component 122 to optimize sole cushioning.
  • the density of the material forming the midsole component 122 varies along the length LGT of the midsole component 122. Injection molding or 3D printing may be used to manufacture the midsole component 122 with varying density. In FIG. 9 , the different concentration of speckles along the length LGT of the midsole component 122 illustrates the different densities of the material forming the midsole component 122.
  • the material (partly or wholly) forming the midsole component 122 may be referred to as the sole material.
  • the sole material may be (or may include) an ethylene-vinyl acetate (EVA) foam and blown nitrile rubber.
  • EVA ethylene-vinyl acetate
  • the density of the sole material may be greater at the sole heel portion 123 than at the sole forefoot portion 121.
  • the stability of the hard heel striker may be optimized by maximizing the density of the midsole component 122 at the sole heel portion 123. Further, further stability optimization is possible by maximizing the density and the thickness of the midsole component 122 at the sole heel portion 123.
  • the density of the sole material may be greater at the sole heel portion 127 than at the sole midfoot portion 127 in order to maximize cushioning at the sole heel portion 123 and maximizing comfort during a runner stride.
  • the density of the sole material at the sole heel portion 123 may be greater than the density of the sole material at the sole midfoot portion 127 and the sole forefoot portion 121 in order to maximize comfort during the entire heel-to-toe stride.
  • the density of the sole material may continuously decrease from the sole heel portion 123 to the sole forefoot portion 121 to provide optimal cushioning while enhancing the energy return at the sole forefoot portion 121.
  • the specific gravity of the sole material may range of the midsole component 122 between 0.15 and 0.3 along the length LGT of the midsole component 122. In the present disclosure, the term "specific gravity" means the ratio of the density of the sole material to the density of water.
  • the specific gravity of the sole material at the sole heel portion 123 may range between the 0.3 and 0.25, and the specific gravity of the sole material of the midsole component 122 at the sole forefoot portion 121 may range between 0.15 and 0.2. These specific gravity ranges provide optimal cushioning at the sole heel portion 123 while enhancing the energy return at the sole forefoot portion 121.
  • the density of the sole material may decrease linearly from the sole heel portion 123 to the sole forefoot portion 121 as a function of the length LGT of the midsole component 122 to optimize sole cushioning. It is contemplated that the midsole component 122 may have a varying thickness T and/or density along its length LGT.
  • the sole material may wholly or partly be a foam material as described, for example, in U.S. Pat. No. 7,941,938 .
  • This foam material may have a lightweight, spongy feel.
  • the resiliency of the foam material for the sole material may be greater than 40%, greater than 45%, at least 50%, and in one aspect from 50-70%.
  • Compression set may be 60% or less, 50% or less, 45% or less, and in some instances, within the range of 20 to 60%.
  • the hardness (Durometer Asker C) of the foam material may be, for example, 25 to 50, 25 to 45, 25 to 35, or 35 to 45, e.g., depending on the type of footwear.
  • the tensile strength of the foam material may be at least 1.47 MPa (15 kg/cm 2 ) and typically 1.47 to 3.92 MPa (15 to 40 kg/cm2).
  • the elongation % is 150 to 500, typically above 250.
  • the tear strength is 5.88-14.71 kN/m (6-15 kg/cm) typically above 6.86 kN/m (7 kg/cm).
  • the sole material may have lower energy loss and may be more lightweight than traditional EVA foams.
  • at least some portion of midsole component 122 may be made from foam materials used in the LUNAR family of footwear products available from NIKE, Inc. of Beaverton, Oregon.
  • the properties (including ranges) of the foam material for any of the sole components described in this disclose enhances the support provided by sole structure 103 to the wearer's foot without compromising the auxetic properties of the sole structure 103.
  • the holes 200 are arranged to form an auxetic structure.
  • One or more of the properties of the auxetic structure may be a function of the thickness T of the midsole component 122, and are a function of the density of the sole material.
  • the properties of the auxetic structure are referred to herein as "auxetic properties.”
  • the auxetic properties includes, but is not limited to, sizes, shape, quantity, spacing, and depth of the holes 200.
  • the spacing between the holes 200 may vary as a function of the density of the sole material to optimize sole cushioning.
  • the term "spacing between the holes” means the maximum distance two or more adjacent holes 200.
  • the density of the sole material may be proportional to the spacing between the holes 200.
  • the spacing between the holes 200 decrease as the density of the sole material increases along the length LGT of the midsole component 122 (or any of the sole component).
  • the spacing between the holes 200 may increase from the sole forefoot portion 121 ( FIG. 9 ) toward the sole heel portion 123 ( FIG. 9 ) as the density of the sole material may increases from the sole forefoot portion 121 ( FIG. 9 ) toward the sole heel portion 123 ( FIG. 9 ).
  • the spacing between the holes 200 may vary as a function of the thickness T of the midsole component 122 (or any of the sole components) to optimize sole cushioning.
  • the thickness T of the midsole component 122 (or any of the sole components) may be inversely proportional to the spacing between the holes 200.
  • the spacing between the holes 200 decreases from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ) as the thickness T of the sole material increases along the length LGT of the midsole component 122 (or any of the sole component) from the sole forefoot portion 121 ( FIG. 9 ) to the sole heel portion 123 ( FIG. 9 ).
  • quantity of the holes 200 may vary as a function of the density of the sole material to optimize sole cushioning.
  • the term "quantity of the holes” means the number of holes 200 within a predetermined area of the midsole component 122 (or any other sole component).
  • the density of the sole material may be directly proportional to the quantity of the holes 200.
  • the quantity of the holes 200 decreases as the density of the sole material increases along the length LGT of the midsole component 122 (or any of the sole component).
  • the quantity of holes 200 may decrease from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ) as the density of the sole material decreases from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121).
  • the quantity of holes 200 may vary as a function of the thickness T of the midsole component 122 (or any of the sole components) to optimize sole cushioning.
  • the thickness T of the midsole component 122 (or any of the sole components) may be inversely proportional to the quantity of holes 200.
  • the quantity of holes 200 decreases as the thickness T of the midsole component 122 (or any of the sole component) increases along the length LGT of the midsole component 122 (or any of the sole component).
  • the quantity of holes 200 may decrease from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ) as the thickness T of the midsole component 122 (or any of the sole components) decreases from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ).
  • depth of the holes 200 may vary as a function of the density of the sole material to optimize sole cushioning.
  • the density of the sole material may be proportional to the hole depth HD ( FIG. 9 ) of the holes 200.
  • the hole depth HD ( FIG. 9 ) of the holes 200 decreases as the density of the sole material decreases along the length LGT of the midsole component 122 (or any of the sole component).
  • the hole depth HD ( FIG. 9 ) of holes 200 may increase from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ) as the density of the sole material increases from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121).
  • the hole depth HD ( FIG. 9 ) of holes 200 may vary as a function of the thickness T of the midsole component 122 (or any of the sole components) to optimize sole cushioning.
  • the thickness T of the midsole component 122 (or any of the sole components) may be proportional to the hole depth HD ( FIG. 9 ) of the holes 200.
  • the hole depth HD ( FIG. 9 ) of holes 200 decreases from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 as the thickness T of the midsole component 122 (or any of the sole component) decreases along the length LGT of the midsole component 122 from the sole heel portion 123 ( FIG. 9 ) toward the sole forefoot portion 121 ( FIG. 9 ).

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Footwear And Its Accessory, Manufacturing Method And Apparatuses (AREA)

Claims (10)

  1. Sohlenstruktur (103) für einen Schuhartikel, umfassend:
    eine Sohlenkomponente (120), die eine innere Oberfläche und eine der inneren Oberfläche gegenüberliegende äußere Oberfläche aufweist, wobei die Sohlenkomponente (120) eine Länge und eine Dicke aufweist, wobei die Sohlenkomponente (120) ein Sohlenmaterial umfasst und das Sohlenmaterial eine Dichte aufweist:
    wobei die Dichte entlang der Länge der Sohlenkomponente (120) variiert;
    wobei die Sohlenkomponente (120) eine Vielzahl von Löchern (200) definiert, die sich von mindestens einer der inneren Oberfläche und/oder der äußeren Oberfläche erstrecken und so angeordnet sind, dass sie eine auxetische Struktur bilden;
    wobei die auxetische Struktur so ausgestaltet ist, dass, wenn die Sohlenkomponente (120) in eine erste Richtung gespannt ist, die Sohlenkomponente (120) sich sowohl in die erste Richtung als auch in eine zweite Richtung orthogonal zur ersten Richtung ausdehnt; und
    wobei eine Eigenschaft der auxetischen Struktur als eine Funktion der Dichte des Sohlenmaterials variiert, wobei die Eigenschaft der auxetischen Struktur eines oder mehrere von Größe, Form, Menge, Abstand und/oder Tiefe der Vielzahl von Löchern (200) umfasst.
  2. Sohlenstruktur (103) nach Anspruch 1, wobei die Sohlenkomponente (120) einen Vorfußabschnitt (121), einen Fersenabschnitt (123) und einen Mittelfußabschnitt (127) umfasst, der zwischen dem Fersenabschnitt (123) und dem Vorfußabschnitt (121) angeordnet ist, und die Dicke der Sohlenkomponente (120) am Fersenabschnitt (123) größer als am Vorfußabschnitt (121) ist.
  3. Sohlenstruktur (103) nach Anspruch 2, wobei die Dicke der Sohlenkomponente (120) am Fersenabschnitt (123) größer als am Mittelfußabschnitt (127) ist; oder
    wobei die Dicke der Sohlenkomponente (120) vom Fersenabschnitt (123) zum Vorfußabschnitt (121) kontinuierlich abnimmt; oder
    wobei die Dicke der Sohlenkomponente (120) linear vom Fersenabschnitt (123) zum Vorfußabschnitt (121) als eine Funktion der Länge der Sohlenkomponente (120) abnimmt.
  4. Sohlenstruktur (103) nach Anspruch 1, wobei die Sohlenkomponente (120) eine Zwischensohlenkomponente (122) ist; oder
    wobei das Sohlenmaterial einen Ethylen-Vinyl-Acetat- (EVA) Schaum und aufgeschäumten Nitrilkautschuk umfasst.
  5. Sohlenstruktur (103) nach Anspruch 1, wobei die Sohlenkomponente (120) einen Vorfußabschnitt (121), einen Fersenabschnitt (123) und einen Mittelfußabschnitt (127) umfasst, der zwischen dem Fersenabschnitt (123) und dem Vorfußabschnitt (121) angeordnet ist, und die Dichte des Sohlenmaterials am Fersenabschnitt (123) höher ist als am Vorfußabschnitt (121).
  6. Sohlenstruktur (103) nach Anspruch 5, wobei die Dichte des Sohlenmaterials am Fersenabschnitt (123) höher ist als am Mittelfußabschnitt (127); und
    wobei wahlweise die Dichte des Sohlenmaterials vom Fersenabschnitt (123) zum Vorfußabschnitt (121) kontinuierlich abnimmt; und
    wobei wahlweise die Dichte des Sohlenmaterials linear vom Fersenabschnitt (123) zum Vorfußabschnitt (121) als eine Funktion der Länge der Sohlenstruktur abnimmt.
  7. Sohlenstruktur (103) nach Anspruch 1, wobei zumindest einige der Vielzahl von Löchern (200) als ein isotoxales Vieleck geformt sind; oder
    wobei zumindest einige der Vielzahl von Löchern (200) als ein konkaves Sechseck geformt sind.
  8. Sohlenstruktur nach Anspruch 1, wobei die Eigenschaft der auxetischen Struktur Größen der Vielzahl von Löchern (200) umfasst und die Größen der Vielzahl von Löchern (200) als eine Funktion der Dichte oder der Dicke der Sohlenkomponente (120) variieren; und/oder
    wobei wahlweise die Eigenschaft der auxetischen Struktur Formen der Vielzahl von Löchern (200) umfasst und die Formen der Vielzahl von Löchern (200) als eine Funktion der Dichte oder der Dicke der Sohlenkomponente (120) variieren; und/oder
    wobei wahlweise die Eigenschaft der auxetischen Struktur eine Menge der Vielzahl von Löchern (200) innerhalb eines Bereichs der Länge der Sohlenkomponente (120) umfasst und die Menge der Vielzahl von Löchern (200) als eine Funktion der Dichte oder der Dicke der Sohlenkomponente (120) variiert; und/oder
    wobei wahlweise die Eigenschaft der auxetischen Struktur einen Abstand der Vielzahl von Löchern (200) umfasst und der Abstand der Vielzahl von Löchern (200) als eine Funktion der Dichte oder der Dicke der Sohlenkomponente (120) variiert; und/oder
    wobei wahlweise die Eigenschaft der auxetischen Struktur eine Tiefe der Vielzahl von Löchern (200) umfasst und die Tiefe der Vielzahl von Löchern (200) als eine Funktion der Dichte oder der Dicke der Sohlenkomponente (120) variiert.
  9. Schuhartikel, der die Sohlenstruktur nach einem der Ansprüche 1 bis 8 umfasst.
  10. Schuhartikel nach Anspruch 9, wobei die Länge der Sohlenkomponente (120) sich entlang einer Längsrichtung erstreckt, die Breite der Sohlenkomponente (120) sich entlang einer seitlichen Richtung erstreckt, die seitliche Richtung senkrecht zur Längsrichtung ist, die Dicke der Sohlenkomponente (120) sich entlang einer vertikalen Richtung erstreckt, die vertikale Richtung senkrecht zur Längsrichtung und zur seitlichen Richtung ist;
    wobei die auxetische Struktur so ausgestaltet ist, dass, wenn die Sohlenkomponente (120) in einer der Längsrichtung oder der seitlichen Richtung gespannt wird, die Sohlenkomponente (120) sich sowohl in der Längsrichtung als auch in der seitlichen Richtung ausdehnt.
EP18734995.6A 2017-05-25 2018-05-21 Sohlenstruktur mit lochanordnung zur bildung einer auxetischen struktur Active EP3629802B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15/604,705 US10716360B2 (en) 2013-09-18 2017-05-25 Sole structure with holes arranged to form an auxetic structure
PCT/US2018/033627 WO2018217614A1 (en) 2017-05-25 2018-05-21 Sole structure with holes arranged to form an auxetic structure

Publications (2)

Publication Number Publication Date
EP3629802A1 EP3629802A1 (de) 2020-04-08
EP3629802B1 true EP3629802B1 (de) 2021-12-01

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EP18734995.6A Active EP3629802B1 (de) 2017-05-25 2018-05-21 Sohlenstruktur mit lochanordnung zur bildung einer auxetischen struktur

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EP (1) EP3629802B1 (de)
CN (1) CN110678095B (de)
WO (1) WO2018217614A1 (de)

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Publication number Priority date Publication date Assignee Title
US6192607B1 (en) * 1993-10-08 2001-02-27 Secondwind Products, Inc Insole assembly for footwear
US8084117B2 (en) * 2005-11-29 2011-12-27 Haresh Lalvani Multi-directional and variably expanded sheet material surfaces
US7941938B2 (en) 2006-05-26 2011-05-17 Nike, Inc. Article of footwear with lightweight sole assembly
EP2571389A2 (de) * 2010-05-18 2013-03-27 Montrail Corporation Fussbekleidung mit mehreren reaktionseigenschaften
US9402439B2 (en) 2013-09-18 2016-08-02 Nike, Inc. Auxetic structures and footwear with soles having auxetic structures
US10064448B2 (en) * 2014-08-27 2018-09-04 Nike, Inc. Auxetic sole with upper cabling
WO2016041090A1 (en) * 2014-09-19 2016-03-24 Furio Orologio Thermally insulated personal articles and sleeping bag liners
US9854869B2 (en) * 2014-10-01 2018-01-02 Nike, Inc. Article of footwear with one or more auxetic bladders

Non-Patent Citations (1)

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Title
None *

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CN110678095B (zh) 2022-03-22
WO2018217614A1 (en) 2018-11-29
EP3629802A1 (de) 2020-04-08
CN110678095A (zh) 2020-01-10

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