Sole structure and shoe including the sole structure

Abstract

A sole structure includes: a midsole; a first support which is formed in a plate shape, which is firmer than the midsole, which is provided in a midfoot region of the midsole, and which is disposed along a lower surface of the midsole; and a second support which is firmer than the midsole, which is disposed behind the first support, and which is provided on a side portion of the midsole.

What is claimed is: 
     
         1 . A sole structure comprising:
 a midsole;   a first support which is formed in a plate shape; which is firmer than the midsole; which is provided in a midfoot region of the midsole; and which is disposed along a lower surface of the midsole; and   a second support which is firmer than the midsole; which is disposed behind the first support; and which is provided on a side portion of the midsole.   
     
     
         2 . The sole structure of  claim 1 , wherein
 the second support includes an inner section extending from an inner side of the first support backward along an inner side of the midsole in the foot width direction.   
     
     
         3 . The sole structure of  claim 2 , wherein
 the second support further includes an outer section extending from an outer side of the first support backward along an outer side of the midsole in the foot width direction.   
     
     
         4 . The sole structure of  claim 1 , wherein
 the first support is provided in the midfoot region and a forefoot region of the midsole.   
     
     
         5 . The sole structure of  claim 2 , wherein
 the second support extends so that a back side of the second support is positioned higher.   
     
     
         6 . The sole structure of  claim 2 , wherein
 the midsole includes a side portion provided with a recess which is formed in a groove shape and which extends backward from the first support, and the second support is disposed on the recess.   
     
     
         7 . The sole structure of  claim 1 , further comprising:
 a support plate which is disposed along the first support and which is more solid than the first support.   
     
     
         8 . The sole structure of  claim 6 , wherein
 a size of a cross-sectional area of the second support when being cut in a vertical direction and the foot width direction is defined as a thickness of the second support, and   the second support has a repetitive structure where the thickness of the second support periodically varies in a direction in which the second support extends.   
     
     
         9 . The sole structure of  claim 8 , wherein a maximum thickness of each single structure of the repetitive structure of the second support becomes smaller in a back side. 
     
     
         10 . A shoe comprising:
 the sole structure of  claim 1 ; and an upper.   
     
     
         11 . A shoe comprising:
 the sole structure of  claim 2 ; and an upper.   
     
     
         12 . A shoe comprising:
 the sole structure of  claim 3 ; and an upper.