TWI694784B - Multi-component sole structure having an auxetic configuration - Google Patents

Abstract

An article of footwear includes a sole structure with a midsole component and an inner sole component. The midsole component includes holes arranged in an auxetic configuration. The midsole component and the inner sole component may have a different density. The midsole component and the inner sole component may have a different compressibility.

Description

Multi-component sole structure with stretch configuration

Embodiments of the present invention relate generally to articles of footwear, and more specifically, embodiments of the present invention relate to articles of footwear having a vamp and sole structure. The article of footwear generally contains two main elements: a vamp and a sole structure. The upper can be formed of various materials that are stitched or adhesively bonded together to form a space in the footwear to comfortably and securely receive the foot. The sole structure is fixed to a lower part of the upper and is generally positioned between the foot and the ground. In many articles of footwear including sports shoes, the sole structure usually incorporates an insole, a midsole, and an outsole.

In one aspect, a sole structure includes a midsole component and an insole component. The midsole assembly includes a plurality of holes arranged in an expanded configuration. The midsole component is shaped to receive the insole component, and a first density of the midsole component is different from a second density of the insole component. In another aspect, an article of footwear includes a vamp and a sole structure having a midsole component and an insole component. The midsole component includes an outer surface and an inner surface. The outer surface includes a plurality of holes arranged in an expanded configuration. The inner surface includes a central recess that receives the insole assembly. At least one outsole member is attached to the outer surface of the midsole assembly. Those of ordinary skill will understand or become aware of other systems, methods, features, and advantages of the embodiments after studying the following drawings and detailed description. It is hoped that all such additional systems, methods, features, and advantages are included in [embodiments] and [invention], are within the scope of the examples, and are protected by the accompanying technical solutions.

[ Cross-Reference of Related Applications ] This application is the US Patent Application No. 14/643,161 filed on March 10, 2015, and the US Patent Application No. 2015/0237957A1, and has been approved, which is 2013 Part of the US Patent Application No. 14/030,002 filed on September 18 (US Publication No. 2015/0075033 A1, U.S. Approved Patent No. US 9,402,439B2) continued part of the application, and the full text of the US Patent Application is cited by reference Incorporated in this article. FIG. 1 is an isometric view of an embodiment of an article of footwear 100. FIG. In the exemplary embodiment, the article of footwear 100 has the form of a sports shoe. However, in other embodiments, the pre-provisions discussed herein for the article of footwear 100 may be incorporated into various other footwear including (but not limited to) the following: basketball shoes, hiking shoes, English Football shoes, American football shoes, casual shoes, running shoes, cross training shoes, rugby shoes, baseball shoes and other types of shoes. Furthermore, in some embodiments, the prefabricated articles discussed herein for the article of footwear 100 may be incorporated into various other non-sports-related footwear including (but not limited to) the following: slippers, sandals, high heels, and flat bottoms shoe. For clarity, the following detailed description discusses features of footwear object 100 (also simply referred to as object 100). However, it should be understood that other embodiments may incorporate a corresponding footwear object (e.g., when the object 100 is a left) that may share some (and possibly all) features of the object 100 described herein and shown in the drawings. In the case of footwear, a right footwear can be incorporated). Embodiments may feature adjectives and reference parts in various directions. These directions and reference parts can facilitate the description of a part of an article of footwear. Furthermore, these directions and reference parts can also be used to describe the sub-components of an article of footwear (such as the direction and/or part of an insole component, a midsole component, an outsole component, a vamp or any other component) . For consistency and convenience, directional adjectives are used in this detailed description corresponding to the illustrated embodiment. As used in this detailed description and patent application, the term "longitudinal" refers to a direction extending along the length of a component (such as a shoe upper or sole component). In some cases, the longitudinal direction may extend from a forefoot portion to a heel portion of one of the components. In addition, as used in such detailed description and patent application, the term "lateral" refers to a direction extending along the width of a component. In other words, the lateral direction can extend between an inner side and an outer side of a component. In addition, as used in such detailed description and patent application, the term "vertical" refers to a direction that is substantially perpendicular to a lateral and longitudinal direction. For example, in the case where an object lies flat on a floor, the vertical direction may extend upward from the floor. In addition, the term "inner" refers to a portion of the object that is placed closer to the inside of an object or when the object is worn, closer to a foot. Similarly, the term "outside" refers to a portion of the object that is positioned further away from the inside of the object or away from the foot. Thus, for example, the inner surface of a component is positioned closer to the interior of the object than the outer surface of the component. This detailed description uses these directional adjectives to describe an object and various components of the object (which includes an upper, a midsole structure, and/or an outsole structure). The object 100 may be characterized by several different areas or parts. For example, the object 100 may include a forefoot portion, a midfoot portion, a heel portion, and an ankle portion. Furthermore, the components of the object 100 may also include corresponding parts. Referring to FIG. 1, the object 100 can be divided into a forefoot portion 10, a midfoot portion 12 and a heel portion 14. The forefoot portion 10 may be generally associated with the toes and the joint connecting the metatarsal and phalanges. The midfoot portion 12 may be generally associated with the arch of a foot. Likewise, the heel portion 14 may be generally associated with the heel of a foot that includes a root bone. The object 100 may also include an ankle portion 15 (which may also be referred to as a reverse collar portion). In addition, the object 100 may also include an outer side 16 and an inner side 18. In particular, the outer side 16 and the inner side 18 may be opposite sides of the object 100. In addition, both the lateral side 16 and the medial side 18 may extend through the forefoot portion 10, the midfoot portion 12, the heel portion 14, and the ankle portion 15. FIG. 2 illustrates an exploded isometric view of one embodiment of footwear object 100. FIG. 1 to 2 illustrate various components of a footwear object 100, which includes an upper 102 and a sole structure 103. FIG. In general, upper 102 may be any type of upper. In particular, upper 102 may have any design, shape, size, and/or color. For example, in an embodiment where the object 100 is a basketball shoe, the upper 102 may be a high-top upper that is shaped to provide high support to an ankle. In the embodiment in which the object 100 is a running shoe, the upper 102 may be a low-top upper. In some embodiments, upper 102 includes an opening 114 that provides an entrance for the foot to enter a lumen of upper 102. In some embodiments, 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 preforms including, but not limited to, laces, cables, straps, buttons, zippers, and any other preforms known in the art for fastening objects. In some embodiments, a shoelace 125 may be applied at one of the fastening areas of upper 102. Some embodiments may include an upper extending below the foot, thereby providing 360-degree coverage at some areas of the foot. However, other embodiments need not include an upper extending under the foot. In other embodiments, for example, an upper may have a lower periphery that engages a sole structure and/or insole. A shoe upper can be formed by various manufacturing techniques that result in various shoe upper structures. For example, in some embodiments, an upper may have a braided construction, a knitted (eg, warp knitted) construction, or some other woven construction. In an exemplary embodiment, upper 102 may be a knitted upper. In some embodiments, sole structure 103 may be configured to provide traction for article 100. In addition to providing traction, the sole structure 103 can also reduce the ground reaction force when it is compressed between the foot and the ground during walking, running, or other walking activities. The configuration of the sole structure 103 can vary significantly in different embodiments to include various conventional or non-conventional structures. In some cases, the configuration of sole structure 103 may be configured based on one or more types of ground on which sole structure 103 may be used. Examples of ground include, but are not limited to, natural turf, synthetic turf, mud, hardwood floors, and other surfaces. The sole structure 103 is fixed to the upper 102, and when the article 100 is worn, the sole structure 103 extends between the foot and the ground. In different embodiments, sole structure 103 may include different components. In the exemplary embodiment shown in FIGS. 1 to 2, the sole structure 103 may include an insole component 120, a midsole component 122, and a plurality of outsole components 124. In some cases, one or more of these components may be used. Referring now to FIG. 2, in some embodiments, the insole assembly 120 may be configured as an inner layer of a midsole. For example, as will be discussed in further detail below, the insole assembly 120 may be integrated or received into a portion of the midsole assembly 122. However, in other embodiments, the insole assembly 120 may serve as an insole layer and/or a strobel layer. Therefore, in at least some embodiments, the insole assembly 120 may be joined (eg, stitched or glued) to the lower portion 104 of the upper 102 to secure the sole structure 103 to the upper 102. The insole assembly 120 may have an inner surface 132 and an outer surface 134. The inner surface 132 may be oriented generally toward the upper 102. The outer surface 134 may be oriented generally toward the midsole assembly 122. In addition, a peripheral sidewall surface 136 may extend between the inner surface 132 and the outer surface 134. The midsole assembly 122 may be configured to provide cushioning, shock absorption, energy return, support, and possibly other provisions. To this end, the midsole assembly 122 may have a geometric shape that provides the structure and support of the object 100. Specifically, it can be seen that the midsole assembly 122 has a lower portion 140 and a side wall portion 142. The side wall portion 142 may extend around the entire periphery 144 of the midsole assembly 122. As seen in FIG. 1, the side wall portion 142 may partially wrap the side of the object 100 to provide increased support along the sole of the foot. The midsole component 122 may further include an inner surface 150 and an outer surface 152. The inner surface 150 can be oriented generally toward the upper 102 and the outer surface 152 can be oriented outward. In addition, in the exemplary embodiment, midsole assembly 122 includes a central recess 148 disposed in inner surface 150. The central recess 148 may be generally sized and configured to receive the insole assembly 120. In some embodiments, the midsole component 122 may include a plurality of holes 200, at least part of which may extend through the entire thickness of the midsole component 122. In the exemplary embodiment shown in FIG. 2, portions of the plurality of holes 200 can be seen in the central recess 148. In various embodiments, the midsole assembly 122 may generally incorporate various preforms associated with the midsole. For example, in one embodiment, a midsole assembly may be formed from a polymeric foam material that reduces ground reaction forces (ie, provides cushioning) during walking, running, and other walking activities. In various embodiments, the midsole assembly may also include, for example, fluid-filled cavities, thin plates, regulators, or other elements, which further weaken the force, improve stability, or affect the motion of the foot. FIG. 3 shows a bottom view of the sole structure 103. As seen in FIGS. 2 to 3, the plurality of outsole members 124 includes four different outsole members. Specifically, the sole structure 103 includes a first outsole member 160, a second outsole member 162, a third outsole member 164, and a fourth outsole member 166. Although the exemplary embodiment includes four different outsole components, other embodiments may include any other number of outsole components. In another embodiment, for example, there may be only a single outsole member. In yet another embodiment, only two outsole members may be used. In yet another embodiment, only three outsole members may be used. In other embodiments, five or more outsole components may be used. Generally speaking, an outsole component can be configured as a ground contacting component. In some embodiments, an outsole component may include properties associated with the outsole, such as durability, wear resistance, and increased traction. In other embodiments, an outsole component may include properties associated with a midsole, including cushioning, strength, and support. In an exemplary embodiment, the plurality of outsole members 124 may be configured to increase traction with a ground and maintain wear resistance. In different embodiments, the position of one or more outsole components may vary. In some embodiments, one or more outsole components may be disposed in a forefoot portion of a sole structure. In other embodiments, one or more outsole components may be disposed in a midfoot portion of a sole structure. In other embodiments, one or more outsole components may be disposed in a heel portion of a sole structure. In an exemplary embodiment, the first outsole member 160 and the second outsole member 162 may be disposed in the forefoot portion 10 of the sole structure 103. More specifically, the first outsole member 160 may be disposed on the inner side 18 of the forefoot portion 10, and the second outsole member 162 may be disposed on the outer side 16 of the forefoot portion 10. Furthermore, in the exemplary embodiment, third outsole member 164 and fourth outsole member 166 may be disposed in heel portion 14 of sole structure 103. More specifically, the third outsole member 164 may be placed on the outside 16 and the fourth outsole member 166 may be placed on the inside 18. In addition, it can be seen that the first outsole member 160 and the second outsole member 162 are spaced apart from each other in the center of the forefoot portion 10, and the third outsole member 164 and the fourth outsole member 166 are in the center of the heel portion 14 Spaced from each other. This exemplary configuration provides outsole components at various areas of inside and outside cutting at areas that increase ground contact to increase traction during these movements. The size of various outsole parts can be changed. In an exemplary embodiment, the first outsole member 160 may be the largest outsole member of the plurality of outsole members 124. Furthermore, the second outsole member 162 may be substantially smaller than the first outsole member 160, thereby making the traction force on the inner side 18 of one of the sole structures 103 greater than the traction force on the outer side 16 of the forefoot portion 10. At the heel portion 14, both the third outsole member 164 and the fourth outsole member 166 reach the widest along the rear edge 109 of one of the sole structures 103 and taper slightly toward the midfoot portion 12. 2 and 3, it can be seen that the first outsole member 160 has an inner surface 170 and an outer surface 172. The inner surface 170 may be disposed substantially against the midsole assembly 122. The outer surface 172 may face outward and may be a ground-contacting surface. For clarity, only the inner and outer surfaces of the first outsole member 160 are indicated in FIGS. 2 to 3, however, it should be understood that the remaining outsole members may also include corresponding inner surfaces with similar orientations relative to the midsole assembly 122 And the outer surface. In an exemplary embodiment, the insole assembly 120 may be disposed in the central recess 148 of the midsole assembly 122. More specifically, the outer surface 134 of the insole assembly 120 may be oriented toward and in contact with the inner surface 150 of the midsole assembly 122. In addition, in some cases, the peripheral sidewall surface 136 may also contact the inner surface 150 along a recessed sidewall 149. In addition, a plurality of outsole members 124 may be disposed against the outer surface 152 of the midsole assembly 122. For example, the inner surface 170 of the first outsole member 160 may face the outer surface 152 of the midsole assembly 122 and be in contact with the outer surface 152 of the midsole assembly 122. In some embodiments, when the midsole assembly 122 and the insole assembly 120 are assembled, the midsole assembly 122 and the insole assembly 120 may constitute a composite midsole assembly or a double-layer midsole assembly. In different embodiments, upper 102 and sole structure 103 may be joined in various ways. In some embodiments, upper 102 may be joined to insole assembly 120 using, for example, an adhesive or by stitching. In other embodiments, upper 102 may be joined to midsole assembly 122 along sidewall portion 142, for example. In other embodiments, upper 102 may engage both insole component 120 and midsole component 122. Furthermore, any method known in the art for joining sole components to the upper (which includes various lasting techniques and specifications (eg, board lasts, sleeve lasts, etc.)) can be used to join these components. In different embodiments, the attachment configuration of various components of the object 100 may vary. For example, in some embodiments, the insole assembly 120 may be bonded or otherwise attached to the midsole assembly 122. Any known method for bonding components of the article of footwear (including but not limited to adhesives, films, tapes, cotton-like fibers, stitching, or other methods) can be used to accomplish this bonding or attachment. In some other embodiments, it is envisaged that the insole assembly 120 may not be joined or attached to the midsole assembly 122, but may float freely. In at least some embodiments, the insole assembly 120 may have a friction fit with one of the central recesses 148 of the midsole assembly 122. Likewise, outsole member 124 may be bonded or otherwise attached to midsole assembly 122. Any known method for bonding components of the article of footwear (including but not limited to adhesives, films, tapes, cotton-like fibers, stitching, or other methods) can be used to accomplish this bonding or attachment. It is envisioned that in at least some embodiments, two or more of the insole assembly 120, midsole assembly 122, and/or outsole member 124 may be formed and/or combined together during a molding process. For example, in some embodiments, after the midsole assembly 122 is formed, the insole assembly 120 may be molded into the central recess 148. Embodiments may include preforms to facilitate the expansion and/or adaptability of a sole structure during dynamic movement. In some embodiments, a sole structure may be configured to have bulging preforms. In particular, one or more components of the sole structure can withstand bulging movements (such as expansion and/or contraction). As shown in FIGS. 1 to 5 and described in further detail below, sole structure 103 has a bulging structure or configuration. Cross sole US Patent Application No. 14/030,002 (the ``Expansion Structure Application''), which was filed on September 18, 2013 and named "Auxetic Structures and Footwear with Soles Having Auxetic Structures", describes the sole structure including the expansion structure , The entire text of the US patent application is incorporated herein by reference. As described in the application of the bulging structure, the bulging material has a negative Poisson's ratio (Poisson's ratio), so that when the materials are pulled in a first direction, their dimensions are along the first direction and orthogonal or perpendicular Both of the first direction and the second direction increase. Figures 4 and 5 illustrate this property of a bulging material. As seen in FIG. 3, the sole structure 103 may include a plurality of holes 300. As used herein, the term "hole" refers to any hollow or recessed area in an assembly. In some cases, a hole may be a through hole, where the hole extends between two opposing surfaces of a component. In other cases, a hole may be a blind hole, where the hole may not extend through the entire thickness of the component and therefore may only be open on one side. Furthermore, as will be discussed in further detail below, a component may utilize a combination of through holes and blind holes. In addition, in some cases, the term "hole" may be used interchangeably with "hole" or "recess". In areas containing one or more holes, sole structure 103 may be further associated with a plurality of discrete sole portions 320. Specifically, the sole portion 320 includes a portion of the sole structure 103 extending between the plurality of holes 300. It can also be seen that a plurality of holes 300 extend between the sole portions 320. Therefore, it should be understood that each hole may be surrounded by a plurality of sole portions, so that the boundary of each hole may be defined by the edge of the sole portion. This arrangement between the hole (or hole) and the sole portion is discussed in further detail in the application for the expansion structure. As seen in FIG. 3, a plurality of holes 300 may extend through most of the midsole assembly 122. In some embodiments, the plurality of holes 300 may extend through the forefoot portion 10, the midfoot portion 12, and the heel portion 14 of the midsole assembly 122. In other embodiments, the plurality of holes 300 may not extend through each of these portions. The plurality of holes 300 may also extend through the plurality of outsole members 124. In the exemplary embodiment, each of the first outsole member 160, the second outsole member 162, the third outsole member 164, and the fourth outsole member 166 includes two or more holes. However, in other embodiments, one or more outsole members may not contain any holes. In different embodiments, the geometry of one or more holes can vary. Examples of different geometric shapes that can be used in a bulging sole structure are disclosed in the bulging structure application. Furthermore, the embodiment may also utilize any other geometric shape, such as using a sole portion having a parallelogram geometry or other polygonal geometry arranged in a pattern to provide the sole with a bulging structure. In the exemplary embodiment, each of the plurality of holes 300 has a Samsung geometry, which includes three arms or points extending from a common center. The geometry of one or more sole parts can also vary. Examples of different geometric shapes that can be used in a bulging sole structure are disclosed in the bulging structure application. It should be understood that the geometry of a sole portion can be determined from the geometry of the hole in a bulging pattern, and vice versa. In the exemplary embodiment, each sole portion has a generally triangular geometry. The plurality of holes 300 may be provided on the sole structure 103 in a bulging pattern or bulging configuration. In other words, the plurality of holes 300 may be disposed on the midsole assembly 122 and/or the outsole member 124 in such a way as to undergo expansion and contraction movements such as expansion or contraction. An example of bulging expansion caused by the bulging configuration of a plurality of holes 300 is shown in FIGS. 4 and 5. First, in FIG. 4, the sole structure 103 is in an untensioned state. In this state, the plurality of holes 300 have an untensioned area. For illustration, only a region 400 of midsole assembly 122 is shown in the figure, where region 400 includes a subset of holes 402. When a tensile force (as shown in FIG. 5) is applied across the sole structure 103 in an exemplary linear direction 410 (eg, a longitudinal direction), the sole structure 103 undergoes bulging expansion. That is, the sole structure 103 expands along the direction 410 and a second direction 412 perpendicular to the direction 410. As seen in FIG. 5, as the size of the hole 402 increases, the representative area 400 expands in both the direction 410 and the direction 412 at the same time. Embodiments may include preforms for a two-layer midsole structure. In some embodiments, a midsole component may be configured to cooperate with or otherwise engage an insole component, such that the two components constitute a single midsole structure or other similar sole structure. Furthermore, the two layers can be configured to have different properties, such as different densities, different degrees of compression, and possibly other material properties. As previously discussed and shown in FIG. 2, the insole assembly 120 may be configured to fit within the central recess 148 of the midsole assembly 122. In particular, the central recess 148 is sized to fit the insole assembly 120. Furthermore, in some embodiments, the central recess 148 may extend along the entire length of the sole structure 103, that is, from a front end 107 of the sole structure 103 to a rear end 108 of the sole structure 103 (see FIG. 6). 6 shows an isometric view of sole structure 103 with insole assembly 120 assembled with midsole assembly 122, which includes an enlarged cross-sectional view of one of the two assemblies. As seen in FIG. 6, the insole assembly 120 fits snugly in the central recess 148 (see FIG. 2). Specifically, the fit is configured such that the outer surface 134 of the insole assembly 120 is positioned to abut the inner surface 150 of the midsole assembly 122 and the peripheral sidewall surface 136 of the insole assembly 120 is positioned to abut the inner surface of the midsole assembly 122 The concave side wall 149. As seen in FIG. 6, the inner surface 150 of the midsole component 122 includes an inner peripheral surface 602 that constitutes the inner surface of the side wall portion 142 of the midsole component 122. In at least some embodiments, the insole assembly 120 may be flush with a surface of the midsole assembly 122. In an exemplary embodiment, the inner surface 132 of the insole assembly 120 may be flush or substantially flush with the inner peripheral surface 602 of the midsole assembly 122. This flush configuration can provide an overall feeling that the insole assembly 120 and the midsole assembly 122 cling to a foot (can be separated by a sock and/or additional padding). Of course, in other embodiments, the inner surface 132 may be raised above the inner peripheral surface 602. In other embodiments, the inner surface may be recessed below the inner peripheral surface 602. 7 illustrates a bottom isometric view of one of the sole structures 103, which includes an enlarged view of a number of holes in the midsole assembly 122. Referring now to FIGS. 6-7, the insole assembly 120 may be at least partially exposed on a lower surface 702 of the sole structure 103. In an exemplary embodiment, the plurality of holes 200 may include a set of through holes 710 extending through the entire thickness of the midsole assembly 122 (ie, extending between the outer surface 152 and the inner surface 150). That is, the holes in the through-hole group 710 are open to the central recess 148 on the inner surface 150. The result of this configuration is that some parts of the insole assembly 120 can be seen through the through hole group 710. As shown in FIG. 7, a representative through hole 720 extends through the entire thickness of the midsole assembly 122. Therefore, the outer surface 134 of the insole assembly 120 can be seen in the through hole 720, and the outer surface 134 of the insole assembly 120 can be seen in the other holes of the through hole group 710. It should also be understood that some holes are not through holes (ie, some holes may be blind holes), so that the insole assembly 120 cannot be seen through these blind holes. For example, a blind hole 730 can be seen on the midsole assembly 122. As seen in FIG. 7, the insole assembly 120 cannot be seen through the blind hole 730. In at least some embodiments, the midsole component 122 and the insole component 120 may have different colors. For example, in an embodiment, the midsole component 122 may be green, and the insole component 120 may be red. Since the insole assembly 120 can be partially seen or exposed through some holes in the midsole assembly 122, this can provide a pleasing effect on one of the outer surfaces of the sole structure 103. In different embodiments, the physical properties of the layers or components in a two-layer structure can vary. In some embodiments, an insole component and a midsole component may have similar physical properties. In other embodiments, an insole component and a midsole component may have different physical properties and/or may be made of different materials. In at least some embodiments, the insole assembly 120 and the midsole assembly 122 may have different values of compressibility. As used herein, the term "compressibility" refers to the degree of volumetric compression of an object under a compressive force. In some embodiments, midsole assembly 122 may compress less than insole assembly 120. In other embodiments, the midsole assembly 122 may compress more than the insole assembly 120. In the exemplary embodiment shown in FIGS. 6 to 9, the insole assembly 120 can be compressed more than the midsole assembly 122, so that the insole assembly provides improved cushioning and shaping for a leg in the object 100. 8 and 9 illustrate side cross-sectional views of an embodiment of an object 100 including an insole assembly 120 and a midsole assembly 122. If there is no foot in the object 100, the insole assembly 120 and the insole assembly 122 have an uncompressed configuration, as shown in FIG. In this uncompressed configuration, the insole assembly 120 has a thickness 802 and the midsole assembly 122 has a thickness 804. When a foot is inserted into the object 100, the user's weight (with or without additional force) can apply a compressive force to the sole structure 103, thereby compressing the insole assembly 120. For example, a foot 910 exerts a compressive force against the sole structure 103, thereby compressing the insole assembly 120 from an initial thickness 802 to a compressed thickness 806. In contrast, the midsole assembly 122 may be less compressed than the insole assembly 120 and may not experience large thickness changes. As seen in FIG. 9, the midsole assembly 122 has a substantially constant thickness 804. In some embodiments, the density of an insole component and a midsole component can vary. In some embodiments, an insole component may have a density similar to a midsole component. In other embodiments, an insole component may have a different density than a midsole component. In the exemplary embodiment of FIGS. 8 to 9, the insole assembly 120 may have a density different from the midsole assembly 122. For example, in the exemplary embodiment, insole assembly 120 may be made of a material that is not as dense as midsole assembly 122. As an example, the midsole component 122 may be made of a material containing a high-density foam, and the insole component 120 may be made of a material containing a low-density foam. This pair of sole structures 103 provides a dual-density configuration, wherein the higher density of midsole assembly 122 may provide improved durability on one of the outer sides of sole structure 103. It should be appreciated that in some materials, density and firmness may be related so that materials with lower density may compress less than similar materials with higher density. However, some materials (such as some foams) may have a density that is not related to their compressibility. Therefore, it should be understood that in some embodiments, the density and/or compressibility of an insole component may vary. It should be further understood that in some embodiments, the density of one or more outsole components may be different from the density of an insole assembly or a midsole assembly. For example, in one embodiment, the outsole member 124 may have a density greater than that of both the insole assembly 120 and the midsole assembly 122, thereby providing better durability in areas where traction with a ground is intended to be maximized Sex. FIGS. 10 to 12 are schematic diagrams illustrating different embodiments of the sole structure of an insole component and a midsole component using different physical properties. In FIG. 10, a sole structure 1000 includes a midsole component 1004 and an insole component 1002. In FIG. 11, a sole structure 1009 includes a midsole component 1012 and an insole component 1010. In FIG. 12, a sole structure 1019 includes a midsole component 1022 and an insole component 1020. In FIGS. 10 and 11, the midsole assembly 1004 and the midsole assembly 1012 can be made of the same material with the same compressibility. However, the insole assembly 1002 may be made of a material different from the insole assembly 1010, which may provide the insole assembly 1002 with a compressibility different from that of the insole assembly 1010. As seen in FIGS. 10 to 11, under a compressive force 1060, the midsole assembly 1004 and the midsole assembly 1012 are not significantly compressed to maintain a uniform thickness 1042 before and after compression. In contrast, both insole assembly 1002 and insole assembly 1010 are subjected to compression. However, the insole assembly 1002 is compressed to a thickness 1050 that is greater than the thickness 1052 to which the insole assembly 1010 is compressed. FIG. 12 illustrates an embodiment in which both a midsole component and an insole component are subjected to compression. As shown in FIG. 12, the midsole component 1022 is made of a material different from the midsole component 1004 or the midsole component 1012. When the sole structure 1019 is subjected to a compressive force 1060, both the insole assembly 1020 and the midsole assembly 1022 are compressed to a thickness 1054 and a thickness 1058, respectively. As shown in FIG. 12, the insole assembly 1020 is subjected to a greater degree of compression than the midsole assembly 1022. Embodiments may use any method to manufacture a dual component sole structure, such as a dual density or dual compressible sole structure. Some embodiments may utilize a single-bottom injection method, various other injection molding methods, and/or blow molding methods. Furthermore, in some cases, the insole component and the midsole component can be simultaneously molded, while in other cases, the insole component and the midsole component can be separately molded and glued together. Although various embodiments have been described, the description is intended to be illustrative rather than restrictive, and those of ordinary skill should understand that more embodiments and implementations within the scope of these embodiments are feasible. Unless expressly restricted, any feature of any embodiment may be used in combination with or in place of any other feature or element of any other embodiment. Accordingly, the embodiments shall not be restricted except for the scope of the accompanying patent application and its equivalent. In addition, various modifications and changes can be made within the scope of the accompanying patent application.

10: Forefoot part

12: Midfoot part

14: Heel part

15: ankle part

16: outside

18: inside

100: footwear

102: upper

103: sole structure

104: next part

107: front end

108: backend

109: Backward edge

114: opening

120: Insole assembly

122: midsole assembly

124: Outsole parts

125: shoelace

132: inner surface

134: outer surface

136: Peripheral sidewall surface

140: next part

142: Side wall part

144: Surrounding

148: Center recess

149: sidewall of recess

150: inner surface

152: outer surface

160: first outsole part

162: Second outsole component

164: Third outsole component

166: Fourth outsole component

170: inner surface

172: outer surface

200: hole

300: hole

320: sole part

400: area

402: Hole

410: direction

412: Second direction

602: inner peripheral surface

702: Lower surface

710: Through hole group

720: through hole

730: Blind hole

802: initial thickness

804: thickness

806: Compressed thickness

910: feet

1000: sole structure

1002: Insole assembly

1004: midsole assembly

1009: sole structure

1010: Insole assembly

1012: Midsole assembly

1019: sole structure

1020: Insole assembly

1022: Midsole assembly

1042: thickness

1050: thickness

1052: thickness

1054: thickness

1058: thickness

1060: Compression force

The embodiments can be better understood with reference to the following drawings and description. The components in the drawings are not necessarily to scale, but focus on illustrating the principles of the embodiments. Furthermore, in the drawings, the same reference symbol indicates the corresponding parts in all the different drawings. Figure 1 is an isometric view of an embodiment of a footwear object; Figure 2 is an exploded isometric view of an embodiment of a footwear object; Figure 3 is a bottom view of an embodiment of a footwear object Figure 4 is a bottom isometric view of an embodiment of a sole component, which includes an enlarged schematic view of a portion of the sole component; Figure 5 is a bottom isometric view of an embodiment of a sole component, which includes the An enlarged schematic view of a part of a sole component, wherein the part of the sole component undergoes expansion and expansion; FIG. 6 is a schematic isometric view of an embodiment of a sole structure including a midsole component and an insole component; 7 is a bottom isometric view of one embodiment of the sole structure of FIG. 6; FIG. 8 is a schematic side cross-sectional view of one of the footwear objects before being inserted into a foot; FIG. 9 is one of when the foot is inserted One of the footwear objects is a schematic side cross-sectional view; and FIGS. 10 to 12 are schematic diagrams showing various material configurations constituting a midsole component and an insole component of a midsole assembly.

103‧‧‧Sole structure

107‧‧‧ Front

108‧‧‧back

120‧‧‧Insole assembly

122‧‧‧Midsole component

132‧‧‧Inner surface

134‧‧‧Outer surface

136‧‧‧ Peripheral sidewall surface

140‧‧‧Part

142‧‧‧Side wall part

149‧‧‧ Inner concave side wall

150‧‧‧Inner surface

152‧‧‧Outer surface

200‧‧‧hole

602‧‧‧Inner peripheral surface

702‧‧‧Lower surface

Claims (18)

A sole structure for an article of footwear. The sole structure includes: a midsole assembly having a longitudinal direction extending along a length of the sole structure and a transverse direction extending along a width of the sole structure , And a vertical direction perpendicular to the longitudinal direction and the lateral direction, the midsole assembly includes a plurality of holes arranged in a bulging configuration, so that the midsole assembly responds to a longitudinal tensile force applied to the midsole assembly or Any one of the lateral tensile forces expands in both the longitudinal direction and the lateral direction, the plurality of holes includes at least one through hole, and the at least one through hole extends through the inner and outer surfaces of the midsole assembly A thickness of the midsole component between, and an insole component immediately adjacent to the inner surface of the midsole component, wherein a first density of the midsole component is different from a second density of the insole component; The first density of the midsole element is higher than the second density of the inner sole element. The sole structure of claim 1, wherein the midsole component includes a recess on the inner surface, wherein the insole component is disposed in the recess. The sole structure of claim 2, wherein the recess includes an inner recess side wall that defines the recess, and wherein the insole component includes a peripheral side wall surface that is immediately adjacent to the inner recess side wall of the midsole component. The sole structure of claim 1, wherein one or more parts of the insole assembly are exposed through one or more holes of the plurality of holes. As in the sole structure of claim 1, wherein the plurality of holes include star holes. As in the sole structure of claim 1, wherein at least one of the plurality of holes is a blind hole. The sole structure of claim 1, wherein the midsole component includes a high-density foam material. The sole structure of claim 7, wherein the insole assembly includes a low-density foam material. The sole structure of claim 1, wherein the insole assembly can be compressed more than the midsole assembly. An article of footwear comprising: a shoe upper having a length and a width; a sole structure attached to the shoe upper, the shoe sole structure comprising: a midsole component having: along the shoe upper A longitudinal direction extending a length, a transverse direction extending along a width of the upper, and a perpendicular direction perpendicular to the longitudinal direction and the transverse direction, the midsole assembly has opposing inner and outer surfaces, and The midsole assembly includes a plurality of holes arranged in a bulging configuration so that the midsole assembly expands in both the longitudinal direction and the lateral direction in response to a longitudinal tensile force applied to the midsole assembly; an inner A bottom component, which is adjacent to the inner surface of the midsole component, and at least one outer bottom member, which is attached to the outer surface of the midsole component, wherein the plurality of holes include at least one through hole, the at least one through hole Extend through A thickness of the midsole assembly from the inner surface to the outer surface of the midsole assembly; wherein an inner surface of the inner sole assembly is flush with a portion of the inner surface of the midsole assembly. The article of footwear according to claim 10, wherein the midsole component includes a central recess on the inner surface, and wherein the insole component is disposed in the central recess. The article of footwear of claim 11, wherein the central recess extends from a front end of the midsole assembly to a rear end of the midsole assembly. The article of footwear of claim 10, wherein the insole assembly can be compressed more than the midsole assembly. The article of footwear according to claim 10, wherein a portion of the insole assembly is exposed on an outer surface of the sole structure through at least one through hole in the midsole assembly. The article of footwear according to claim 10, wherein the at least one outsole member has a density different from the insole assembly. The article of footwear according to claim 10, wherein the at least one outsole member has a density different from the midsole assembly. The article of footwear according to claim 11, wherein the central recess includes a portion defining the central recess A concave side wall, and wherein the insole assembly includes a peripheral side wall surface, the peripheral side wall surface is adjacent to the inner concave side wall of the central concave portion. The article of footwear according to claim 10, wherein the midsole component is thicker than the insole component closest to the central recess.

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