Shoe

Abstract

To provide a shoe capable of suppressing generation of pronation.SOLUTION: A shoe 1 comprises a sole 10 and an upper 20. The sole 10 comprises a heel support part, an upper swelled part 152 formed on the outer peripheral surface S10 of the sole, a lower swelled part 154 formed on the outer peripheral surface S10 of the sole, and an outer peripheral groove part 156 formed in a region of the outer peripheral surface S10 of the sole that is between the upper swelled part and the lower swelled part. The outer peripheral groove part 156 has an inner foot side forward end part 156a located at the forward end on the inner foot side, and an outer foot side forward end part located at the forward end on the outer foot side. The outer peripheral groove part 156 includes a region 156R where the depth of the outer peripheral groove part 156 becomes gradually shallower as progressing towards the inner foot side forward end part 156a.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] This disclosure relates to shoes. [Background technology]

[0002] For example, JP 2020-81154 A discloses a shoe to be worn for running, etc. The sole of this shoe has a recess formed therein that extends from the inner foot side through the rear end to the outer foot side. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-81154 A Summary of the Invention [Problem to be solved by the invention]

[0004] For example, in shoes worn while running, it is desirable to suppress the occurrence of ankle pronation while running.

[0005] An object of the present disclosure is to provide a shoe that can suppress the occurrence of pronation. [Means for solving the problem]

[0006] A shoe according to one aspect of the disclosure comprises a sole that supports a wearer's foot, and an upper that is connected to the sole and that, together with the sole, accommodates the wearer's foot, the sole including: a heel support portion that supports the heel of the wearer; an upper bulge portion that is formed on an outer peripheral surface of the sole and bulges convexly in a direction away from the heel support portion; a lower bulge portion that is formed on the outer peripheral surface of the sole below the upper bulge portion and bulges convexly in a direction away from the heel support portion; and an outer peripheral groove portion that is formed in a portion of the outer peripheral surface of the sole between the upper bulge portion and the lower bulge portion and has a shape that convexly extends toward the heel support portion, the outer peripheral groove portion including an inner foot side front end portion located at a front end on the inner foot side of the outer peripheral groove portion, and an outer foot side front end portion located at a front end on the outer foot side of the outer peripheral groove portion, the outer peripheral groove portion including a region in which a depth of the outer peripheral groove portion gradually becomes shallower toward the inner foot side front end portion. Effect of the Invention

[0007] According to this disclosure, a shoe capable of suppressing the occurrence of pronation can be provided. [Brief description of the drawings]

[0008] [Figure 1] 1 is a side view of a shoe according to an embodiment of the present disclosure, viewed from the medial side of the foot. [Diagram 2] FIG. 2 is a side view of the shoe as seen from the outside of the foot. [Diagram 3] FIG. 2 is a rear view of the shoe. [Figure 4] FIG. [Diagram 5] FIG. [Figure 6] 11 is a plan view showing the relationship between the boundary between the sole and the upper and the outer edge of the lower bulge portion. FIG. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 5. [Figure 8] FIG. 8 is a diagram illustrating an area indicated by a solid line VIII in FIG. 7. [Figure 9]FIG. [Figure 10] FIG. 11 is a cross-sectional view illustrating a modified example of the outer circumferential groove portion. [Figure 11] FIG. 11 is a cross-sectional view illustrating a modified example of the outer circumferential groove portion. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] An embodiment of the present invention will be described with reference to the drawings. In the drawings referred to below, the same or equivalent members are given the same numbers. In the following description, terms such as foot length direction, foot width direction, forward, and backward are used. These directional terms indicate directions seen from the viewpoint of a wearer wearing the shoe 1 placed on a flat ground surface P (see Figs. 1 and 2) such as the ground. For example, forward refers to the toe side, and backward refers to the heel side. In addition, the medial or inner foot side refers to the first toe (big toe) side of the foot in the foot width direction, and the lateral or outer foot side refers to the fifth toe side of the foot in the foot width direction.

[0010] Fig. 1 is a side view of a shoe according to an embodiment of the present disclosure, as viewed from the inner side of the foot. Fig. 2 is a side view of the shoe as viewed from the outer side of the foot. Fig. 3 is a view of the shoe as viewed from the rear. Although Figs. 1 to 3 show a shoe 1 for the left foot, this shoe 1 can also be applied to the right foot. In this case, the shoe 1 for the right foot is formed to have a shape that is symmetrical to the shoe 1 for the left foot, or a shape that is roughly equivalent thereto.

[0011] The shoes 1 in this embodiment are suitable for running, for example, but can also be used as other sports shoes, and the uses of the shoes 1 are not important.

[0012] As shown in FIGS. 1 to 3, the shoe 1 includes a sole 10 and an upper 20 .

[0013] The sole 10 is configured to support the wearer's foot. The sole 10 includes a midsole 100 and an outsole 200.

[0014] The midsole 100 is configured to support the forefoot, midfoot, and rearfoot of the wearer. The midsole 100 has a shock-absorbing function when landing and a rebound function when kicking off. The midsole 100 is preferably made of a resin or rubber that has a suitable strength and excellent shock-absorbing properties. The midsole 100 is made of, for example, a resin foam. The midsole 100 includes a heel support portion 110, a narrow portion 120, a wide portion 130, a standing portion 140, an upper bulge portion 152, a lower bulge portion 154, and a peripheral groove portion 156.

[0015] The heel support portion 110 is configured to support the heel of a wearer. The heel support portion 110 may be formed of a material different from that of the portion of the midsole 100 other than the heel support portion 110.

[0016] The narrow width portion 120 is formed in front of the heel support portion 110. As shown in Fig. 5, the length of the narrow width portion 120 in the foot width direction is smaller than the length of the portion of the midsole 100 including the heel support portion 110 in the foot width direction.

[0017] The wide portion 130 is formed in front of the narrow portion 120. The length of the wide portion 130 in the foot width direction is greater than the length of the narrow portion 120 in the foot width direction.

[0018] As shown in Fig. 4, the standing portion 140 stands from the peripheral edge of the surface S1 of the sole 10. The standing portion 140 is continuously connected from the lateral side of the heel support portion 110, passing behind the heel support portion 110, to the medial side of the heel support portion 110. As shown in Figs. 1, 2 and 4, the standing portion 140 includes an inner foot side inflection portion 142 and an outer foot side inflection portion 144.

[0019] The medial inflection part 142 is formed on the medial side of the heel support part 110. The medial inflection part 142 has an upwardly convex shape. A part of the standing part 140 in front of the medial inflection part 142 is gradually inclined toward the surface S1 of the sole 10 as it moves forward from the medial inflection part 142. A part of the standing part 140 behind the medial inflection part 142 may be gradually inclined toward the surface S1 of the sole 10 as it moves rearward from the medial inflection part 142, or may be formed to be substantially parallel to the ground surface P.

[0020] The lateral inflection part 144 is formed on the lateral side of the heel support part 110. The lateral inflection part 144 has an upwardly convex shape. The part of the standing part 140 in front of the lateral inflection part 144 is gradually inclined toward the surface S1 of the sole 10 as it moves forward from the lateral inflection part 144. The part of the standing part 140 behind the lateral inflection part 144 may be gradually inclined toward the surface S1 of the sole 10 as it moves rearward from the lateral inflection part 144, or may be formed to be substantially parallel to the ground surface P.

[0021] 1 and 2, the medial inflection part 142 is located forward of the lateral inflection part 144 in the foot length direction. The height position of the medial inflection part 142 from the ground surface P is set higher than the height position of the lateral inflection part 144 from the ground surface P. However, the height position of the medial inflection part 142 may be set to be the same as or lower than the height position of the lateral inflection part 144.

[0022] The upper bulge 152 is formed on the outer peripheral surface S10 of the sole 10. In this embodiment, the outer peripheral surface S10 of the sole 10 is formed by the outer peripheral surface of the midsole 100. The upper bulge 152 bulges outwardly in a convex manner in a direction away from the heel support portion 110. The outer peripheral surface S10 includes an inner foot side outer peripheral surface S12 formed on the inner foot side of the heel support portion 110, an outer foot side outer peripheral surface S14 formed on the outer foot side of the heel support portion 110, and a rear outer peripheral surface S16 formed behind the heel support portion 110. The upper bulge 152 is continuously connected from the inner foot side outer peripheral surface S12 through the rear outer peripheral surface S16 to the outer foot side outer peripheral surface S14.

[0023] The lower bulge 154 is formed on the outer circumferential surface S10 of the sole below the upper bulge 152. The lower bulge 154 bulges outwardly in a convex manner in a direction away from the heel support portion 110. The lower bulge 154 is continuously connected from the inner foot side outer circumferential surface S12 through the rear outer circumferential surface S16 to the outer foot side outer circumferential surface S14.

[0024] The outer circumferential groove portion 156 is formed in a portion of the outer circumferential surface S10 of the sole 10 between the upper bulge portion 152 and the lower bulge portion 154. The outer circumferential groove portion 156 has a shape that is convex toward the heel support portion 110. The outer circumferential groove portion 156 is continuously connected from the inner foot side outer circumferential surface S12 through the rear outer circumferential surface S16 to the outer foot side outer circumferential surface S14.

[0025] Here, the circumferential groove portion 156 is defined as follows. First, as shown in Fig. 7, two points P1 and P2 are defined where a circle C1 with a radius of 5 mm centered at the deepest part 156d of the circumferential groove portion 156 intersects with the midsole 100 on a plane passing through the center 110P of the heel support portion 110. Then, as shown in Fig. 8, the shape of the circle C2 passing through the deepest part 156d and the above two points P1 and P2, with a diameter D of 10 mm or less, is defined as the circumferential groove portion 156. More specifically, the diameter D of the circle C2 is 4 mm or more and 10 mm or less.

[0026] The center 110P of the heel support part 110 is located at a first length X from the intersection 15a of the rear part of the boundary part 15 and the heel center HC forward along the heel center HC. The first length X is preferably 10% to 30% of the length between the parts of the boundary part 15 that intersect with the heel center HC or the shoe center SC, and more preferably 15% to 20%, and more preferably 10%, 15%, 20%, or 30%. The heel center HC refers to a straight line connecting the center of the calcaneus and the vicinity of the fourth toe of a standard wearer of the shoe 1.

[0027] As shown in Figs. 1 and 2, the outer circumferential groove portion 156 has an inner foot side front end portion 156a (see Fig. 1) and an outer foot side front end portion 156b (see Fig. 2). The inner foot side front end portion 156a is located at the front end of the outer circumferential groove portion 156 on the inner foot side. The outer foot side front end portion 156b is located at the front end of the outer circumferential groove portion 156 on the outer foot side. The outer circumferential groove portion 156 includes a region 156R in which the depth of the outer circumferential groove portion 156 gradually becomes shallower toward the inner foot side front end portion 156a. This region 156R extends from the inner foot side front end portion 156a through the rear end portion of the outer circumferential groove portion 156 toward the outer foot side front end portion 156b. However, the region 156R does not reach the outer foot side front end portion 156b. That is, the depth of the outer circumferential groove portion 156 becomes shallower from the outer foot side terminal end of the region 156A toward the outer foot side front end portion 156b.

[0028] As shown in FIG. 3, the outer circumferential groove portion 156 has a shape that, when the shoe 1 is placed on a flat ground surface P, gradually moves away from the ground surface P from the outer foot side front end portion 156b to the inner foot side front end portion 156a.

[0029] As shown in FIG. 1, the height H2 of the lower bulge 154 is greater than the height H1 of the upper bulge 152.

[0030] 3 and 6, the shoe 1 has a boundary 15 between the sole 10 and the upper 20. Note that the boundary 15 is indicated by a dashed line in Fig. 6. The amount of bulging W2 of the lower bulging portion 154 from the boundary 15 in a plan view (see Fig. 3) is greater than the amount of bulging W1 of the upper bulging portion 152 from the boundary 15 in a plan view (see Fig. 3).

[0031] 6, the amount of bulging L1 of the inner outer peripheral surface S12 (lower bulging portion 154) from the boundary portion 15 in a plan view is greater than the amount of bulging L2 of the outer outer peripheral surface S14 (lower bulging portion 154) from the boundary portion 15 in a plan view. For example, the amounts of bulging L1 and L2 are measured on a plane that is perpendicular to the heel center HC and passes through the center 110P of the heel support portion 110.

[0032] 6, the amount of bulge L3 of the rear outer peripheral surface S16 from the boundary portion 15 in a plan view is greater than the amount of bulge L2 of the outer peripheral surface S14 on the foot side from the boundary portion 15 in a plan view. For example, the amount of bulge L3 is measured on a plane passing through the shoe center SC or on a plane passing through the heel center HC. The shoe center SC is not limited to the center line of the shoe 1, and may be a line that overlaps in the thickness direction of the sole 10 with a straight line that passes through the center of the calcaneus and the space between the first and second toes of a standard wearer of the shoe 1.

[0033] As shown in FIG. 9, a lower surface inclined groove 162 and a lower surface outer foot side groove 164 are formed on the lower surface of the midsole 100.

[0034] The lower surface inclined groove 162 extends from a part on the lower surface of the midsole 100 that is closer to the medial side than the rear end in the foot length direction toward the front and gradually toward the lateral side (the right side in FIG. 9).

[0035] The lower surface outer foot side groove 164 extends forward from the lower surface inclined groove 162. The lower surface outer foot side groove 164 is formed on the outer foot side of the shoe center SC.

[0036] The outsole 200 is connected to the lower surface of the midsole 100. The outsole 200 constitutes a ground contact part that is placed on the ground surface P. The outsole 200 is made of rubber, resin, or the like.

[0037] As shown in Fig. 9, the outsole 200 includes an inner foot side covering portion 210. In Fig. 9, the inner foot side covering portion 210 is indicated by diagonal lines. The inner foot side covering portion 210 covers a part of the inner foot side area of ​​the lower surface of the midsole 100. The inner foot side covering portion 210 has a shape that extends continuously from the lower surface inclined groove 162 to the wide portion 130.

[0038] The upper 20 is connected to the sole 10. The upper 20 forms a space for accommodating the wearer's foot together with the sole 10. The upper 20 covers the upper surface of the wearer's foot. The upper 20 includes a front covering portion 21 and a reinforcing portion 22.

[0039] The front covering portion 21 is configured to cover the front feet of the wearer.

[0040] The reinforcement part 22 has a tensile stiffness higher than that of the front covering part 21. The reinforcement part 22 includes an inner foot side reinforcement part 22a and an outer foot side reinforcement part 22b. The inner foot side reinforcement part 22a is disposed between the front covering part 21 and the inner foot side inflection part 142. The outer foot side reinforcement part 22b is disposed between the front covering part 21 and the outer foot side inflection part 144.

[0041] As described above, in the shoe 1 of this embodiment, the compression stiffness is relatively low in the part of the sole 10 on the outer foot side, particularly around the heel support portion 110, and the compression stiffness is relatively high in the part of the sole 10 on the inner foot side. This ensures cushioning and stability when the outer foot touches the ground, and suppresses the occurrence of pronation after touching the ground, for example, during running.

[0042] 10, the outer circumferential groove portion 156 may have a flat surface. In this case, the deepest portion 156d is set at the midpoint of the flat surface in the height direction.

[0043] 11, the outer circumferential groove portion 156 may have a plurality of recessed portions 156e. In this case, among the circles C2 defined in the respective recessed portions 156e, the recessed portion 156e having the smallest diameter D constitutes the deepest portion 156d.

[0044] It will be appreciated by those skilled in the art that the exemplary embodiments described above are examples of the aspects described below.

[0045] [Aspect 1] A sole that supports the wearer's foot; an upper connected to the sole and configured to receive the wearer's foot together with the sole; The sole is A heel support portion that supports the heel of the wearer; An upper bulge portion is formed on the outer peripheral surface of the sole and bulges outwardly in a convex manner in a direction away from the heel support portion; A lower bulge portion is formed below the upper bulge portion on the outer circumferential surface of the sole and bulges outwardly in a convex manner in a direction away from the heel support portion; a peripheral groove portion formed in a portion of the peripheral surface of the sole between the upper bulge portion and the lower bulge portion and having a shape that is convex toward the heel support portion, The outer circumferential groove portion is an inner foot side front end portion located at a front end on an inner foot side of the outer circumferential groove portion; an outer foot side front end portion located at a front end on the outer foot side of the outer circumferential groove portion, The shoe, wherein the outer circumferential groove portion includes a region in which the depth of the outer circumferential groove portion becomes gradually shallower toward the medial front end portion of the foot.

[0046] In this shoe, the compression stiffness of the sole is relatively low in the area of ​​the outer side of the sole, particularly around the heel support portion, and the compression stiffness of the sole is relatively high in the area of ​​the inner side of the sole. This ensures cushioning and stability when the outer side of the foot touches the ground, and also suppresses the occurrence of pronation after touching the ground, for example, during running.

[0047] [Aspect 2] The shoe described in aspect 1, wherein the outer circumferential groove portion has a shape that gradually moves away from the ground surface from the lateral front end toward the medial front end when the shoe is placed on a flat ground surface.

[0048] In this embodiment, the volume of the lower bulge increases from the outside foot side to the inside foot side, and the compressive stiffness of the lower bulge increases from the outside foot side to the inside foot side. Therefore, for example, the occurrence of pronation is suppressed while the cushioning and stability on the outside foot side at the beginning of contact with the ground during running is better ensured.

[0049] [Aspect 3] The shoe of aspect 1 or 2, wherein, in a plan view, the amount of bulging of the lower bulging portion from the boundary between the sole and the upper is greater than the amount of bulging of the upper bulging portion from the boundary in a plan view.

[0050] In this embodiment, the volume of the lower bulge, i.e., the volume of the portion farther from the heel support, is increased, so that the moment around the rotation axis of the wearer's foot is increased, thereby further suppressing the occurrence of pronation.

[0051] [Aspect 4] The outer circumferential surface of the sole is An inner foot side outer circumferential surface formed on the inner foot side of the heel support portion; an outer foot side outer peripheral surface formed on the outer foot side of the heel support portion, A shoe according to any one of aspects 1 to 3, wherein, in a planar view, the amount of bulging of the inner outer peripheral surface from the boundary between the sole and the upper is greater than the amount of bulging of the outer outer peripheral surface from the boundary in a planar view.

[0052] In this embodiment, the moment around the rotation axis of the wearer's foot becomes large when the foot tilts inward, thereby further suppressing the occurrence of pronation.

[0053] [Aspect 5] The outer circumferential surface of the sole further includes a rear outer circumferential surface formed rearward of the heel support portion, The shoe of aspect 4, wherein the amount of bulging of the rear outer peripheral surface from the boundary portion in a plan view is greater than the amount of bulging of the outer foot side outer peripheral surface from the boundary portion in a plan view.

[0054] [Aspect 6] The sole includes a rising portion rising from a peripheral portion of a surface of the sole, The standing portion is continuously connected from the outer foot side of the heel support portion to the rear of the heel support portion and to the inner foot side of the heel support portion, The standing portion is An inner foot side inflection portion formed on the inner foot side of the heel support portion and having an upwardly convex shape; An outer foot side inflection portion formed on the outer foot side of the heel support portion and having an upwardly convex shape, A shoe according to any one of aspects 1 to 5, wherein the most protruding portion of the medial inflection portion is located forward of the most protruding portion of the lateral inflection portion in the lengthwise direction of the foot.

[0055] In this embodiment, the wearer's foot is effectively supported by the part of the standing portion near the medial inflection part, thereby suppressing the occurrence of pronation.

[0056] [Aspect 7] The upper includes: A front covering portion that covers the wearer's forefoot; a reinforcing portion having a tensile stiffness higher than that of the front covering portion, The shoe of aspect 6, wherein the reinforcement portion includes an inner foot reinforcement portion disposed between the front covering portion and the inner foot inflection portion.

[0057] In this embodiment, the tensile rigidity of the portion of the upper between the front covering portion and the medial foot inflection portion is relatively high, so that pronation is further suppressed.

[0058] [Aspect 8] The shoe of aspect 7, wherein the reinforcement portion includes an outer foot reinforcement portion disposed between the front covering portion and the outer foot inflection portion.

[0059] [Aspect 9] The sole is The midsole and an outsole connected to a lower surface of the midsole; The midsole is The heel support portion; The upper bulge portion, the lower bulge; The outer circumferential groove portion; a narrow portion formed in front of the heel support portion and having a length in a foot width direction smaller than a length in the foot width direction of a portion of the midsole including the heel support portion; a widened portion formed in front of the narrow portion and having a length in the foot width direction greater than a length of the narrow portion in the foot width direction, A lower surface inclined groove is formed on the lower surface of the midsole, the lower surface inclining toward the outer side as it moves forward from a part on the inner side of the foot from the rear end in the foot length direction, the outsole includes an inner foot side covering portion that covers a part of a portion of an inner foot side of a lower surface of the midsole, The sole according to any one of aspects 1 to 8, wherein the medial foot side covering portion has a shape that extends continuously from the lower surface inclined groove to the widened portion.

[0060] In this embodiment, the lower surface inclined groove prevents the load acting from the wearer's heel on the outer side of the foot at the rear of the midsole when the foot touches the ground from being transmitted to the inner side of the foot, and the rigidity of the portion of the midsole on the inner foot side from the lower surface inclined groove to the widened portion is increased by the reinforcing effect of the inner foot side covering portion of the outsole, thereby preventing the occurrence of pronation.

[0061] It should be noted that the embodiments disclosed herein are illustrative in all respects and should not be considered as limiting. The scope of the present invention is indicated by the claims, not by the description of the embodiments above, and further includes all modifications within the meaning and scope of the claims. [Explanation of symbols]

[0062] 1 shoe, 10 sole, 15 boundary portion, 20 upper, 21 front covering portion, 22 reinforcement portion, 22a inner foot side reinforcement portion, 22b outer foot side reinforcement portion, 100 midsole, 110 heel support portion, 110P center, 120 narrow portion, 130 wide portion, 140 rising portion, 142 inner foot side inflection portion, 144 outer foot side inflection portion, 152 upper bulge portion, 154 lower bulge portion, 156 outer peripheral groove portion, 156a inner foot side front end portion, 156b outer foot side front end portion, 156d deepest portion, 156R region, 162 lower surface inclined groove, 164 lower surface outer foot side groove, 200 outsole, HC heel center, S1 surface, S10 outer peripheral surface, S12 inner foot side outer peripheral surface, S14 Outer circumference of outer foot side, S16 rear outer circumference, SC shoe center.

Claims

1. A sole that supports the wearer's foot; an upper connected to the sole and configured to receive the wearer's foot together with the sole; The sole is A heel support portion that supports the heel of the wearer; An upper bulge portion is formed on the outer peripheral surface of the sole and bulges outwardly in a convex manner in a direction away from the heel support portion; A lower bulge portion is formed below the upper bulge portion on the outer circumferential surface of the sole and bulges outwardly in a convex manner in a direction away from the heel support portion; a peripheral groove portion formed in a portion of the peripheral surface of the sole between the upper bulge portion and the lower bulge portion and having a shape that is convex toward the heel support portion, The outer circumferential groove portion is an inner foot side front end portion located at a front end on an inner foot side of the outer circumferential groove portion; an outer foot side front end portion located at a front end on the outer foot side of the outer circumferential groove portion, The shoe, wherein the outer circumferential groove portion includes a region in which the depth of the outer circumferential groove portion becomes gradually shallower toward the medial front end portion of the foot.

2. 2. The shoe according to claim 1, wherein the outer circumferential groove portion has a shape that gradually moves away from the ground surface from the lateral front end toward the medial front end when the shoe is placed on a flat ground surface.

3. The shoe according to claim 1 , wherein an amount of bulging of the lower bulging portion from a boundary portion between the sole and the upper in a plan view is greater than an amount of bulging of the upper bulging portion from the boundary portion in a plan view.

4. The outer circumferential surface of the sole is An inner foot side outer circumferential surface formed on an inner foot side of the heel support portion; an outer foot side outer peripheral surface formed on the outer foot side of the heel support portion, The shoe according to claim 1 , wherein an amount of bulging of the inner outer peripheral surface from a boundary portion between the sole and the upper in a plan view is greater than an amount of bulging of the outer outer peripheral surface from the boundary portion in a plan view.

5. The outer circumferential surface of the sole further includes a rear outer circumferential surface formed rearward of the heel support portion, The shoe according to claim 4 , wherein an amount of bulging of the rear outer circumferential surface from the boundary portion in a plan view is greater than an amount of bulging of the outer circumferential surface on the foot side from the boundary portion in a plan view.

6. The sole includes a rising portion rising from a peripheral portion of a surface of the sole, The standing portion is continuously connected from the outer foot side of the heel support portion to the rear of the heel support portion and to the inner foot side of the heel support portion, The standing portion is An inner foot side inflection portion formed on the inner foot side of the heel support portion and having an upwardly convex shape; An outer foot side inflection portion formed on the outer foot side of the heel support portion and having an upwardly convex shape, The shoe according to claim 1 , wherein the most protruding portion of the medial inflection portion is located forward of the most protruding portion of the lateral inflection portion in the foot length direction.

7. The upper includes: A front covering portion that covers the wearer's forefoot; a reinforcing portion having a tensile stiffness higher than that of the front covering portion, The shoe according to claim 6 , wherein the reinforcing portion includes a medial reinforcing portion disposed between the front covering portion and the medial inflection portion.

8. The shoe according to claim 7 , wherein the reinforcing portion includes a lateral reinforcing portion disposed between the front covering portion and the lateral inflection portion.

9. The sole is The midsole and an outsole connected to a lower surface of the midsole; The midsole is The heel support portion; The upper bulge portion, the lower bulge; The outer circumferential groove portion, a narrow portion formed in front of the heel support portion and having a length in a foot width direction smaller than a length in the foot width direction of a portion of the midsole including the heel support portion; a widened portion formed in front of the narrow portion and having a length in the foot width direction greater than a length of the narrow portion in the foot width direction, A lower surface inclined groove is formed on the lower surface of the midsole, the lower surface inclining toward the outer side as it moves forward from a part on the inner side of the foot from the rear end in the foot length direction, the outsole includes an inner foot side covering portion that covers a part of a portion of an inner foot side of a lower surface of the midsole, The shoe according to claim 1 , wherein the medial foot covering portion has a shape that extends continuously from the lower surface inclined groove to the widened portion.

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