Sole and shoe

Abstract

The present invention provides a sole and a shoe capable of reducing the change in the angle of the ankle joint from the time of landing to the time of kicking, and suppressing the shaking of the rear foot in the width direction of the foot at the time of landing. The sole has a midsole. The lower midsole has a lower midsole main body and a standing wall. The reference surface includes a curved surface. In a cross section at a position of 12% of the length between the rear end and the front end from the rear end toward the front end of the surface in the midsole that is engaged with the upper, the ratio of the length between the reference surface and the upper end of the standing wall to the length between the lower end of the lower midsole main body and the reference surface is 25% or more and 100% or less. In a cross section through the top of the curved surface, the ratio of the length between the reference surface and the upper end of the standing wall to the length between the lower end of the lower midsole main body and the reference surface is 0% or more and 80% or less.

Description

Technical Field

[0001] This invention relates to shoe soles and shoes. Background Technology

[0002] Shoes worn in sports and other activities aim to reduce foot fatigue during walking and exercise. For example, Japanese Patent Application Publication No. 2022-59757 discloses a shoe that reduces the burden on the feet by minimizing the change in ankle joint angle during walking.

[0003] The sole of this shoe includes a plate in which the ratio of the bending stiffness of a narrow region formed behind the flexural portion to the bending stiffness of a wide region formed in the flexural portion below the wearer's forefoot is 0.4 or more and 0.85 or less. In this sole, upon push-off, the plate deforms such that the flexural portion unfolds with a decreasing curvature in the wide region, and the narrow region bulges upwards away from the flat surface; the midsole compresses and deforms in a manner that allows the aforementioned deformation of the flexural portion. This suppresses the decrease in the angle of the wearer's ankle joint during push-off, thus reducing the change in ankle joint angle from the moment of landing to the moment of push-off.

[0004] In the shoes described in Japanese Patent Application Publication No. 2022-59757, for so-called heel-landing runners who land on their heels and push off the ground while shifting their weight to their forefoot, there is a desire to suppress the shaking of the heel in the width direction of the foot when landing. Summary of the Invention

[0005] The purpose of this invention is to provide a sole and a shoe that can reduce the change in ankle joint angle from landing to pushing off the ground and suppress shaking of the rear foot in the foot width direction during landing.

[0006] The sole of the present invention constitutes part of a shoe, wherein the sole has a midsole, the midsole having: a lower midsole; and an upper midsole disposed above the lower midsole, having a compressive elasticity lower than that of the lower midsole; the lower midsole having: a lower midsole body including a reference surface; and an upright wall rising from the edge of the lower midsole body in the foot width direction; the reference surface includes a curved surface disposed in a region overlapping with the forefoot of the wearer in the thickness direction of the sole, the curved surface having a shape that curves toward the mounting surface when the sole is placed on a horizontal mounting surface, the reference surface having a shape in which the top of the curved surface is closest to the mounting surface when the sole is placed on the mounting surface, and the thickness of the region of the lower midsole body overlapping with the heel of the wearer in the thickness direction is greater than that of the region of the upper midsole body overlapping with the heel of the wearer in the thickness direction. The thickness of the overlapping area, wherein the thickness of the area in the upper midsole that overlaps with the top of the curved surface in the thickness direction is greater than the thickness of the area in the lower midsole body that overlaps with the top of the curved surface in the thickness direction, the height of the raised wall from the reference surface gradually decreases from the rear foot toward the curved surface, in a cross section parallel to the foot width direction at a position 12% of the length between the rear and front ends of the surface of the midsole that joins the upper, the ratio of the length between the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 25% or more and 100% or less, and in a cross section parallel to the foot width direction at the top of the curved surface, the ratio of the length between the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 0% or more and 80% or less.

[0007] The shoe of the present invention has: the sole; and the upper, which is connected to the sole and located above the sole.

[0008] The above and other objects, features, aspects and advantages of the present invention will become clearer from the following detailed description of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0009] Figure 1 This is a perspective view of the sole of a shoe according to one embodiment of the present invention.

[0010] Figure 2 yes Figure 1 The image shown is an exploded 3D view of the shoe sole.

[0011] Figure 3 yes Figure 1 The image shows a top view of the shoe sole.

[0012] Figure 4 yes Figure 3 A cross-sectional view at line IV-IV.

[0013] Figure 5 yes Figure 3 A cross-sectional view at the VV line.

[0014] Figure 6 yes Figure 3 A sectional view at line VI-VI. Detailed Implementation

[0015] Embodiments of the present invention will be described with reference to the accompanying drawings. Furthermore, in the drawings referred to below, the same or equivalent components are labeled with the same reference numerals. In the following description, terms such as foot length direction, foot width direction, front, and rear are used. These directional terms indicate the direction from the horizontal mounting surface P (refer to the ground) where the garment is placed. Figure 4 The direction of view of the wearer of shoe 1. For example, "front" refers to the toe side, and "back" refers to the heel side. Additionally, "inside" refers to the direction of foot width. Figure 3 The inner side of the foot (the side of the first toe) in the left-right direction, and the outer side refers to the outer side of the foot in the width direction.

[0016] Figure 1 This is a perspective view of the sole of a shoe according to one embodiment of the present invention. Figure 2 yes Figure 1 The image shown is an exploded 3D view of the shoe sole. Figure 3 yes Figure 1 The image shows a top view of the shoe sole. Figure 4 yes Figure 3 A cross-sectional view at line IV-IV. Figure 5 yes Figure 3 A cross-sectional view at the VV line. Figure 6 yes Figure 3 A sectional view at line VI-VI.

[0017] In addition, Figures 1-3 The image shows a sole 10 for the left foot, but this sole 10 can also be applied to the right foot. In this case, the sole for the right foot is formed in a shape that is symmetrical to or approximately based on the shape of the sole for the left foot. The shoe 1 of this embodiment (see reference...) Figure 4 For example, it is suitable for running, but it can also be applied to other sports shoes or walking shoes; the use of the shoes is not limited.

[0018] like Figures 1-6 As shown, shoe 1 has a sole 10 and an upper 20.

[0019] like Figure 4As shown, the upper 20 is connected to the sole 10 and is located above the sole 10. The upper 20 and the sole 10 together form a space to accommodate the foot.

[0020] like Figures 1-6 As shown, the sole 10 has a midsole 100, an outsole 200, and a plate 300.

[0021] The midsole 100 is configured to support the wearer's forefoot, midfoot, and heel. The midsole 100 provides cushioning upon landing and rebound upon push-off. The midsole 100 is preferably made of a resin or rubber with moderate strength and excellent cushioning properties. For example, the midsole 100 is made of a resin foam. Figure 3 As shown, the midsole 100 has a forefoot area R1, a midfoot area R2, and a rearfoot area R3.

[0022] The forefoot region R1 is the area that overlaps with the forefoot of the wearer in the thickness direction of the sole 10. The forefoot is the part of the wearer's foot located along the length of the foot (…). Figure 3 The forefoot region (in the vertical direction) is the front part of the foot. The forefoot region includes the MP joint (metatarsophalangeal joint) of the wearer's foot. The forefoot region R1 is the area within approximately 0% to 40% of the total length (the length between the front and rear ends in the foot length direction) of the surface 120S that engages with the upper surface 20 on the upper surface of the midsole 100.

[0023] The midfoot region R2 is the area that overlaps with the midfoot of the wearer of the shoe 1 in the thickness direction of the sole 10. The midfoot is the part of the wearer's foot located in the center of the foot length direction. The midfoot region R2 is the area covering approximately 40% to 70% of the total length of the surface 120S from the front end to the rear end.

[0024] The rear foot region R3 is the area that overlaps with the rear foot of the wearer of the shoe 1 in the thickness direction of the sole 10. The rear foot is the part of the wearer's foot located at the rear in the length direction of the foot. The rear foot region R3 is the area covering 70% to 100% of the total length of the surface 120S from the front end to the rear end.

[0025] like Figures 1-4 As shown, the midsole 100 has a lower midsole 110 and an upper midsole 120.

[0026] The insole 110 is, for example, made of a foam of polyolefin resin, EVA (ethylene-vinyl acetate copolymer), or polyamide thermoplastic elastomer (TPA, TPAE). The outsole 200 is attached to the lower surface of the insole 110.

[0027] like Figure 2 As shown, the lower middle sole 110 has a lower middle sole body 112 and a raised wall 114.

[0028] The lower midsole body 112 includes a reference surface 112S. The reference surface 112S is part of the upper surface of the lower midsole body 112. The reference surface 112S is a surface that is joined to the upper midsole 120 via a plate 300.

[0029] like Figure 2 as well as Figure 4 As shown, the reference surface 112S includes a curved surface S1, which is disposed in the region overlapping with the forefoot of the wearer of the shoe 1 in the thickness direction of the sole 10. The curved surface S1 has a shape that curves toward the mounting surface P when the sole 10 is placed on a horizontal mounting surface P.

[0030] like Figure 4 As shown, the reference surface 112S has a shape in which the top S2 of the curved surface S1 is closest to the mounting surface P when the sole 10 is placed on the mounting surface P. In this embodiment, the reference surface 112S has the following shape: when the sole 10 is placed on the mounting surface P, the top S2 is closest to the mounting surface P, and it gradually slopes away from the mounting surface P as it moves backward from the top S2.

[0031] The upright wall 114 rises from the edge of the lower middle base body 112 in the foot-width direction. (Example) Figure 2 As shown, the height of the upright wall 114 from the reference plane 112S gradually decreases as it moves from the rear foot toward the curved surface S1. Furthermore, the upright wall 114 may also include a portion in which the height of the upright wall 114 from the reference plane 112S has a locally constant height midway from the rear foot toward the curved surface S1 (i.e., a portion that is substantially parallel to the reference plane 112S).

[0032] The upper midsole 120 is disposed on the lower midsole 110. An upper 20 is provided on the upper midsole 120. The upper midsole 120 is, for example, composed of a foam of polyolefin resin, EVA (ethylene-vinyl acetate copolymer), or polyamide thermoplastic elastomer (TPA, TPAE). The upper midsole 120 has a lower compressive elasticity than the lower midsole 110. The compressive elasticity of the upper midsole 120 can be set to be more than 1.2 times and less than 3.0 times, or more than 1.5 times and less than 2.0 times, the compressive elasticity of the lower midsole 110. Furthermore, the compressive elasticities of the upper midsole 120 and the lower midsole 110 are compared by the magnitude of the rebound force under a specified compression rate.

[0033] like Figure 4As shown, the thickness of the region 112R in the lower midsole body 112 that overlaps with the wearer's heel in the thickness direction is greater than the thickness of the region 120R in the upper midsole 120 that overlaps with the heel in the thickness direction. The thickness of the region 120F in the upper midsole 120 that overlaps with the top S2 of the flexural surface S1 in the thickness direction is greater than the thickness of the region 112F in the lower midsole body 112 that overlaps with the top S2 of the flexural surface S1 in the thickness direction. Generally, in the case of a heel strike runner, a relatively large load is applied to the midsole 100 when the heel strikes the ground, while a relatively small load is applied to the midsole 100 when the forefoot pushes off. Therefore, even with a relatively large thickness and a relatively large compressive elasticity, the lower midsole 110 can be effectively compressed when the heel strikes the ground, resulting in effective rebound force. On the other hand, when pushing off the ground, since the upper midsole 120 with a relatively small compression elasticity and a relatively large thickness is configured in the forefoot area, even a relatively small load can effectively compress the upper midsole 120, resulting in an effective rebound force.

[0034] like Figure 3 as well as Figure 5 As shown, the second length L20 from the rear end toward the front end is through the surface 120S of the midsole 100 that joins with the upper 20 (see reference). Figure 3 In a cross-section parallel to the foot width direction at the position of the base surface 112S, the ratio of the length H22 between the upper end of the base surface 112S and the upper end of the upright wall 114 to the length H12 between the lower end of the lower middle sole body 112 and the base surface 112S is 25% or more and 100% or less. This ratio is preferably 30% or more and 80% or less, more preferably 40% or more and 60% or less. Furthermore, the upper and lower limits of this ratio can be arbitrarily combined. In this embodiment, the second length L20 is set as the length L10 between the rear end and the front end of the surface 120S in the foot length direction (refer to...). Figure 3 12% of ). In addition, the rear end and front end of surface 120S refer to the central point in the foot width direction of the rear end and front end.

[0035] like Figure 3 as well as Figure 6 As shown, in a cross-section passing through the top S2 of the curved surface S1 and parallel to the foot width direction, the ratio of the length H21 between the reference surface 112S and the upper end of the upright wall 114 to the length H11 between the lower end of the lower middle base body 112 and the reference surface 112S is 0% or more and 80% or less. This ratio is preferably 20% or more and 60% or less, more preferably 30% or more and 50% or less. Furthermore, the upper and lower limits of this ratio can be arbitrarily combined.

[0036] The outsole 200 is connected to the lower surface of the insole 110. The outsole 200 forms the ground contact portion. The outsole 200 is made of rubber or the like.

[0037] Plate 300 is disposed within midsole 100. In this embodiment, plate 300 is disposed between lower midsole 110 and upper midsole 120. Figure 2 as well as Figure 4 As shown, plate 300 has a shape along reference plane 112S.

[0038] Plate 300 has a greater flexural rigidity than midsole 100. Plate 300 functions to improve the flexural rigidity of sole 10 and to distribute loads to the portion of midsole 100 located below plate 300 (in this embodiment, lower midsole body 112). Plate 300 is made of fiber-reinforced resin or non-fiber-reinforced resin. Examples of fibers contained in the fiber-reinforced resin include carbon fiber, glass fiber, aromatic polyamide fiber, Dyneema fiber (registered trademark), Zylon fiber (registered trademark), and boron fiber. In this embodiment, carbon fiber is used as the fiber. Plate 300 of this embodiment is plate-shaped with a continuous surface, but is not particularly limited to this. For example, plate 300 may also have openings such as through holes. By having through holes, plate 300 can be made lighter and loads can be transferred to lower midsole 110.

[0039] The plate 300 has a front support portion 310 and a rear support portion 320.

[0040] The forefoot support 310 is located in the forefoot region R1, that is, the area of ​​the sole 10 that overlaps with the forefoot of the wearer in the thickness direction of the sole 10. The forefoot support 310 is located below the MP joint of the wearer's foot. Figure 4 As shown, the front support portion 310 has a shape that bends along the curved surface S1 of the lower midsole body 112. The front support portion 310 has a top 312 formed at a position corresponding to the top S2 of the curved surface S1 (see reference). Figure 2 ).

[0041] The rear support portion 320 has a shape that extends rearward from the front support portion 310. The rear support portion 320 is at least provided in the midfoot region R2, that is, the region that overlaps with at least the midfoot of the wearer in the thickness direction. In this embodiment, the rear support portion 320 has a shape that extends to the rearfoot region R3, that is, the region that overlaps with the rearfoot of the wearer in the thickness direction. However, the rear end of the rear support portion 320 may also be located at the position overlapping with the midfoot region R2.

[0042] like Figure 4As shown, the lower midsole 110 and the upper midsole 120 support plate 300 are positioned such that, with the sole 10 placed on the mounting surface P, the top 312 of the front support portion 310 is located at the bottom, and the portion behind the top 312 of the plate 300 gradually moves away from the mounting surface P as it moves backward.

[0043] More specifically, the lower midsole 110 and the upper midsole 120 are supported by a plate 300 such that the angle α formed by the first plane PL1 and the second plane PL2 is 5 degrees or more. This angle α is preferably 5 degrees or more and 30 degrees or less, more preferably 6 degrees or more and 15 degrees or less.

[0044] The first plane PL1 is a plane parallel to the mounting surface P and passing through the top 312 of the front support portion 310 (the top S2 of the curved surface S1). The second plane PL2 is a plane in the plate 300 that is further rearward than the top 312 and passes through the portion furthest from the first plane PL1 and the top 312. In this embodiment, the "part furthest from the first plane PL1" is the rear end of the plate 300. Furthermore, when defining the first plane PL1 and the second plane PL2, the top 312 and the "part furthest from the first plane PL1" are based on the lower surface of the plate 300.

[0045] In this embodiment, Figure 3 In the cross-section shown at line IV-IV, the portion behind the top 312 of plate 300 is formed in a shape that is approximately along the second plane PL2. However, the portion behind the top 312 of plate 300 may not be substantially flat, but may have a gently curved surface or irregularities in the thickness direction.

[0046] As described above, in the sole 10 of this embodiment, in a cross-section parallel to the foot width direction at a position where the length L10 between the rear end and the front end of the surface 120S of the midsole 100 that engages with the upper 20 is 12% of the length L10 from the rear end to the front end, the length H22 between the reference surface 112S and the upper end of the upright wall 114 is 25% or more and 100% or less than the length H12 between the lower end of the lower midsole body 112 and the reference surface 112S. Therefore, the foot-width direction shaking of the heel when a runner lands is effectively suppressed. Furthermore, in the heel area, the lower midsole body 112 is larger than the upper midsole 120 in both thickness and compressive elasticity, thus effectively supporting the wearer's heel upon landing.

[0047] Furthermore, the height of the upright wall 114 from the reference plane 112S gradually decreases from the rear foot towards the bending surface S1, and in a cross section passing through the top S2 of the bending surface S1 and parallel to the foot width direction, the ratio of the length H21 between the reference plane 112S and the upper end of the upright wall 114 to the length H11 between the lower end of the lower midsole body 112 and the reference plane 112S is more than 0% and less than 80%. Therefore, during push-off, the relatively thick upper midsole 120 is effectively compressed, thereby suppressing changes in ankle joint angle.

[0048] Furthermore, in the above embodiment, a plate-shaped plate 300 is exemplified as a rigid member disposed within the midsole 100, but the type of rigid member is not limited to this. As long as it has a bending rigidity greater than that of the midsole 100, and functions to improve the bending rigidity of the sole 10, and to apply loads to the portion of the midsole 100 located below the rigid member, the rigid member may, for example, be composed of a plurality of rod members arranged at intervals in the foot width direction. Each rod member has a shape extending along the foot length direction.

[0049] Those skilled in the art should understand that the above-described embodiments are specific examples of the following methods.

[0050] [Method 1] A sole, constituting part of a shoe, wherein, The sole has a midsole. The midsole has: Lower middle bottom; and The upper midsole, positioned above the lower midsole, has a compressive elasticity that is smaller than that of the lower midsole. The lower insole has: The lower midsole body, including the reference plane; and Erect the wall, which rises from the edge of the lower middle sole body in the foot width direction; The reference surface includes a curved surface disposed in an area that overlaps with the forefoot of the wearer of the shoe in the thickness direction of the sole. The curved surface has a shape that curves toward the mounting surface when the sole is placed on a horizontal mounting surface. The reference surface has a shape in which the top of the curved surface is closest to the mounting surface when the sole is placed on the mounting surface. The thickness of the area of ​​the lower midsole body that overlaps with the wearer's heel in the thickness direction is greater than the thickness of the area of ​​the upper midsole that overlaps with the heel in the thickness direction. The thickness of the region in the upper insole that overlaps with the top of the curved surface in the thickness direction is greater than the thickness of the region in the lower insole body that overlaps with the top of the curved surface in the thickness direction. The height of the upright wall from the reference plane gradually decreases as it moves from the rear foot toward the curved surface. In a cross-section passing through the surface of the midsole that joins the upper, at a position 12% of the length between the rear end and the front end, and parallel to the foot width direction, the ratio of the length between the upper end of the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 25% or more and 100% or less. In a cross-section passing through the top of the curved surface and parallel to the foot width direction, the ratio of the length between the upper end of the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 0% or more and 80% or less.

[0051] In this outsole, in a cross-section parallel to the foot width direction at a point 12% of the length between the rear and front ends of the surface in the midsole that connects to the upper, the ratio of the length between the reference surface and the upper end of the upright wall to the length between the lower end of the lower midsole body and the reference surface is 25% to 100%. Therefore, it effectively suppresses foot-width tremors in the rear foot during heel-strike runners. Furthermore, the height of the upright wall from the reference surface gradually decreases from the rear foot towards the flexion surface, and in a cross-section parallel to the foot width direction at the top of the flexion surface, the ratio of the length between the reference surface and the upper end of the upright wall to the length between the lower end of the lower midsole body and the reference surface is 0% to 80%. Therefore, during push-off, the relatively thick upper midsole is effectively compressed, thereby suppressing changes in ankle joint angle.

[0052] In addition, Method 1 includes the following: including a portion of the wall that has a constant height from the reference plane in the middle of the bend from the rear foot (i.e., a portion that is substantially parallel to the reference plane).

[0053] [Method 2] The sole according to Method 1, wherein, It also has a plate disposed between the lower midsole and the upper midsole. The plate has: A forefoot support portion, disposed in the sole, in an area overlapping with the forefoot of the wearer in the thickness direction of the sole; and The rear support portion has a shape that extends rearward from the front support portion and is disposed in the sole of the shoe in an area that overlaps with at least the middle foot of the wearer in the thickness direction; The plate has a shape along the reference plane. The lower midsole and the upper midsole support the plate in the following posture when the sole is placed on the mounting surface: the top of the front support portion is at the bottom, and the rear portion of the top of the plate gradually moves away from the mounting surface as it faces rearward. The angle between the first plane parallel to the mounting surface and passing through the top, and the second plane passing through the portion of the plate further back from the top and furthest from the first plane, and the second plane of the top, is 5 degrees or more.

[0054] In this sole, the plate is configured such that the angle between the first and second planes is greater than 5 degrees and is relatively large. By combining this plate, configured at a relatively large angle, with an upper and midsole having relatively low compressive stiffness, it is possible to more effectively suppress the sinking of the wearer's foot at the rearfoot (more specifically, the heel), thereby more effectively suppressing changes in the angle of the wearer's ankle joint during push-off. As a result, it can smoothly facilitate load transfer to the forefoot.

[0055] [Method 3] A shoe, wherein, have: The sole described in method 1 or 2; and The upper is connected to the sole and located above the sole.

[0056] Embodiments of the present invention have been described, but it should be understood that the embodiments disclosed herein are illustrative in all respects and are not restrictive. The scope of the present invention is defined by the claims, including all modifications within the scope of the claims.

Claims

1. A shoe sole, constituting part of a shoe, wherein, The sole has a midsole. The midsole has: Lower middle bottom; as well as The upper midsole, positioned above the lower midsole, has a compressive elasticity that is smaller than that of the lower midsole. The lower insole has: The lower midsole body, including the reference plane; and The wall is erected from the edge of the lower middle base body in the foot width direction; The reference surface includes a curved surface disposed in an area that overlaps with the forefoot of the wearer of the shoe in the thickness direction of the sole. The curved surface has a shape that curves toward the mounting surface when the sole is placed on a horizontal mounting surface. The reference surface has a shape in which the top of the curved surface is closest to the mounting surface when the sole is placed on the mounting surface. The thickness of the area of ​​the lower midsole body that overlaps with the wearer's heel in the thickness direction is greater than the thickness of the area of ​​the upper midsole that overlaps with the heel in the thickness direction. The thickness of the region in the upper insole that overlaps with the top of the curved surface in the thickness direction is greater than the thickness of the region in the lower insole body that overlaps with the top of the curved surface in the thickness direction. The height of the upright wall from the reference plane gradually decreases as it moves from the rear foot toward the curved surface. In a cross-section passing through the surface of the midsole that joins the upper, at a position 12% of the length between the rear end and the front end, and parallel to the foot width direction, the ratio of the length between the upper end of the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 25% or more and 100% or less. In a cross-section passing through the top of the curved surface and parallel to the foot width direction, the ratio of the length between the upper end of the reference surface and the upper end of the raised wall to the length between the lower end of the lower midsole body and the reference surface is 0% or more and 80% or less.

2. The sole according to claim 1, wherein, It also has a plate disposed between the lower midsole and the upper midsole. The plate has: A front support portion is provided in the sole, in the area that overlaps with the forefoot of the wearer in the thickness direction of the sole; as well as The rear support portion has a shape extending rearward from the front support portion and is disposed in the sole of the shoe in an area that overlaps with at least the middle foot of the wearer in the thickness direction; The plate has a shape along the reference plane. The lower midsole and the upper midsole support the plate in the following posture when the sole is placed on the mounting surface: the top of the front support portion is at the bottom, and the rear portion of the top of the plate gradually moves away from the mounting surface as it faces rearward. The angle between the first plane parallel to the mounting surface and passing through the top, and the second plane passing through the portion of the plate further back from the top and furthest from the first plane, and the second plane of the top, is 5 degrees or more.

3. A type of shoe, wherein, have: The sole according to claim 1 or 2; and The upper is connected to the sole and located above the sole.

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