Outsole of Shoe

Abstract

An outsole of a shoe includes: a plurality of ridges having a tread surface to be in contact with a road surface; and at least one longitudinal groove defined between the plurality of ridges. At least in a partial area of each of a forefoot portion and a rear foot portion on a medial side of a foot, the plurality of ridges and the longitudinal groove extend in a longitudinal direction or a diagonal longitudinal direction and are set so that an angle of the ridges and that of the longitudinal groove with respect to a long axis of the outsole are in a range of 0° to 35°. A ratio of a length of the tread surface of the ridges with respect to a width of the tread surface is set to be 1.8 to 200. The width of the tread surface of the ridges is set to be greater than a width of the longitudinal groove by a factor of 2 to 100.

1 - 12 . (canceled) 
     
     
         13 . An outsole of a shoe, the outsole comprising: a plurality of ridges each having a tread surface to be in contact with a road surface; and at least one longitudinal groove defined between the plurality of ridges, wherein:
 at least in a partial area of each of a forefoot portion and a rear foot portion on a medial side of a foot, the plurality of ridges and the longitudinal groove are configured to extend in a longitudinal direction or in a diagonal longitudinal direction and are configured to be set so that angles of the ridges and the groove with respect to a long axis of the outsole are in a range of 0° to 35°;   a ratio of a length of the tread surface of each of the ridges with respect to a width of the tread surface is set to be 1.8 to 200; and   the width of the tread surface of each of the ridges is set to be greater than a width of the longitudinal groove by a factor of 2 to 100.   
     
     
         14 . The outsole according to  claim 13 , wherein a ratio of the width of the tread surface of each of the ridges with respect to a depth of the longitudinal groove is set to be 2 to 20. 
     
     
         15 . The outsole according to  claim 13 , wherein:
 the outsole includes a tip area defined to extend through the forefoot portion on the medial side over a length that is 10% of a length of the long axis in a posterior direction starting from a tip of the outsole, and a main area defined to extend through the forefoot portion on the medial side over a length that is 30% of the length of the long axis in the posterior direction starting from a back end of the tip area;   an area of the tread surfaces of the ridges is greater than a half of an area of the main area; and   the plurality of ridges and the longitudinal groove are provided at least in an anterior end portion of the main area.   
     
     
         16 . The outsole according to  claim 15 , wherein:
 the outsole has the main area divided equally in the longitudinal direction into three areas, which are a first area on an anterior side, a second area adjacent to the first area, and a third area on a posterior side;   at least one ridge of the plurality of ridges has an inclination in the first area such that the at least one ridge comes closer to the long axis as the at least one ridge extends in an anterior direction; and   the at least one ridge, or at least one other ridge of the plurality of ridges, has an inclination in the third area such that the at least one ridge or the at least one other ridge extends away from the long axis as the one ridge or the one other ridge extends in the anterior direction.   
     
     
         17 . The outsole according to  claim 15 , wherein the main area is divided into two parts, which are an edge-side half and a central half, and an area of the tread surfaces of the plurality of ridges in the central half is set to be greater than a half of an area of the central half. 
     
     
         18 . The outsole according to  claim 15 , wherein:
 the outsole has a sub-area adjacent to the main area and defined to extend through the forefoot portion on the medial side over a length that is 5% of the length of the long axis in the posterior direction starting from a back end of the main area; and   in the sub-area, an area of the tread surfaces of the plurality of ridges is set to be greater than a half of an area of a half of the sub-area.   
     
     
         19 . The outsole according to  claim 13 , wherein:
 the outsole further comprises a plurality of other ridges each having a tread surface to be in contact with the road surface, and at least one diagonal groove defined between the plurality of other ridges, wherein:   at least in a partial area of an anterior half portion of the forefoot portion on a lateral side of a foot, the plurality of other ridges and the diagonal groove are configured to extend in a diagonal longitudinal direction and are configured to come closer to an outer edge of the outsole as the ridges and the groove extend in an anterior direction, with angles of the ridges and the groove with respect to the long axis of the outsole set in a range of 20° to 45°; and   an angle between the plurality of ridges on the medial side and the plurality of other ridges on the lateral side is set in a range of 10° to 60°.   
     
     
         20 . The outsole according to  claim 13 , wherein:
 a ratio of the width of the tread surface of each of the ridges with respect to a depth of the longitudinal groove is set to be 3 to 15; and   the depth of the longitudinal groove is set to be 0.2 to 2.5 mm.   
     
     
         21 . The outsole according to  claim 20 , wherein:
 the depth of the longitudinal groove is set to be 0.4 to 2.0 mm.   
     
     
         22 . The outsole according to  claim 20 , wherein:
 the depth of the longitudinal groove is set to be 0.5 to 1.5 mm.   
     
     
         23 . An outsole of a shoe, the outsole comprising: a plurality of ridges each having a tread surface to be in contact with a road surface; and at least one longitudinal groove defined between the plurality of ridges, wherein:
 at least in a partial area of a forefoot portion on a medial side of a foot, the plurality of ridges and the longitudinal groove are configured to extend in a longitudinal direction or in a diagonal longitudinal direction and are configured to be set so that angles of the ridges and the groove with respect to a long axis of the outsole are in a range of 0° to 35°;   a ratio of a length of the tread surface of each of the ridges with respect to a width of the tread surface is set to be 1.8 to 200;   the width of the tread surface of each of the ridges is set to be greater than a width of the longitudinal groove by a factor of 2 to 100; and   a ratio of the width of the tread surface of each of the ridges with respect to a depth of the longitudinal groove is set to be 2 to 20.   
     
     
         24 . The outsole according to  claim 23 , wherein:
 the outsole includes a tip area defined to extend through the forefoot portion on the medial side over a length that is 10% of a length of the long axis in a posterior direction starting from a tip of the outsole, and a main area defined to extend through the forefoot portion on the medial side over a length that is 30% of the length of the long axis in the posterior direction starting from a back end of the tip area;   an area of the tread surfaces of the ridges is greater than a half of an area of the main area; and   the plurality of ridges and the longitudinal groove are provided at least in an anterior end portion of the main area.   
     
     
         25 . The outsole according to  claim 24 , wherein:
 the outsole has the main area divided equally in the longitudinal direction into three areas, which are a first area on an anterior side, a second area adjacent to the first area, and a third area on a posterior side;   at least one ridge of the plurality of ridges has an inclination in the first area such that the at least one ridge comes closer to the long axis as the at least one ridge extends in an anterior direction; and   the at least one ridge, or at least one other ridge of the plurality of ridges, has an inclination in the third area such that the at least one ridge or the at least one other ridge extends away from the long axis as the one ridge or the one other ridge extends in the anterior direction.   
     
     
         26 . The outsole according to  claim 24 , wherein the main area is divided into two parts, which are an edge-side half and a central half, and an area of the tread surfaces of the plurality of ridges in the central half is set to be greater than a half of an area of the central half. 
     
     
         27 . The outsole according to  claim 24 , wherein:
 the outsole has a sub-area adjacent to the main area and defined to extend through the forefoot portion on the medial side over a length that is 5% of the length of the long axis in the posterior direction starting from a back end of the main area; and   in the sub-area, an area of the tread surfaces of the plurality of ridges is set to be greater than a half of an area of a half of the sub-area.   
     
     
         28 . The outsole according to  claim 23 , wherein:
 the outsole further comprises a plurality of other ridges each having a tread surface to be in contact with the road surface, and at least one diagonal groove defined between the plurality of other ridges, wherein:   at least in a partial area of an anterior half portion of the forefoot portion on a lateral side of a foot, the plurality of other ridges and the diagonal groove are configured to extend in a diagonal longitudinal direction and are configured to come closer to an outer edge of the outsole as the ridges and the groove extend in an anterior direction, with angles of the ridges and the groove with respect to the long axis of the outsole set in a range of 20° to 45°; and   an angle between the plurality of ridges on the medial side and the plurality of other ridges on the lateral side is set in a range of 10° to 60°.   
     
     
         29 . The outsole according to  claim 23 , wherein:
 a ratio of the width of the tread surface of each of the ridges with respect to a depth of the longitudinal groove is set to be 3 to 15; and   the depth of the longitudinal groove is set to be 0.2 to 2.5 mm.   
     
     
         30 . The outsole according to  claim 29 , wherein:
 the depth of the longitudinal groove is set to be 0.4 to 2.0 mm.   
     
     
         31 . The outsole according to  claim 29 , wherein:
 the depth of the longitudinal groove is set to be 0.5 to 1.5 mm.   
     
     
         32 . An outsole of a shoe, the outsole comprising: a plurality of ridges each having a tread surface to be in contact with a road surface; and at least one longitudinal groove defined between the plurality of ridges, wherein:
 at least in a partial area of a rear foot portion on a medial side of a foot, the plurality of ridges and the longitudinal groove are configured to extend in a longitudinal direction or in a diagonal longitudinal direction and are configured to be set so that angles of the ridges and the groove with respect to a long axis of the outsole are in a range of 0° to 35°;   a ratio of a length of the tread surface of each of the ridges with respect to a width of the tread surface is set to be 1.8 to 200; and   the width of the tread surface of each of the ridges is set to be greater than a width of the longitudinal groove by a factor of 2 to 100.