Sole member of footwear

Abstract

A shoe midsole is composed of a base plate ( 1 ), a cover ( 2 ), a plurality of blades ( 3 ), and liquid ( 4 ). The blades ( 3 ) are formed in such a manner as to rise within a first region ( 11 ) of the base plate ( 1 ). The blades ( 3 ) are each composed of a plurality of flat-shaped blade elements ( 32, 33 ) separated each other by slits ( 31 ), and are tilted toward the toe side or the heel side. The flat-shaped blade elements ( 32, 33 ) are disposed in such a manner as to be divergent toward the toe side or the heel side. The base plate ( 1 ) and the cover ( 2 ) are joined together, thereby forming a closed space ( 5 ), and the liquid ( 4 ) is sealed in the closed space.

1 . A sole member of footwear comprising a base plate, a cover, a plurality of blades and liquid, characterized in that
 the base plate has a first region having a shape equivalent to a foot sole, and a first horizontal flange portion surrounding the entire periphery of the first region;   the cover has a second region having a shape to face the first region, and a second horizontal flange portion having a shape to face the first horizontal flange portion;   the blades are formed in such a manner as to rise from an upper surface of the first region;   the blades are disposed at predetermined intervals substantially orthogonally to a center line extending from a toe side to a heel side of the base plate;   the blades each comprise a plurality of flat-shaped blade elements separated each other by slits;   the flat-shaped blade elements of each of the blades are tilted toward the toe side or the heel side;   the flat-shaped blade elements which occupy both outer side portions of each of the blades with respect to a lateral direction of the first region are disposed in such a manner as to be divergent toward the toe side or the heel side as viewed from above;   the first horizontal flange portion and the second horizontal flange portion are joined together, thereby forming a space defined by the first region and the second region; and   the liquid is sealed in the space.   
     
     
         2 . A sole member of footwear according to  claim 1 , wherein
 the plurality of blades are composed of a plurality of toe-side blades located between a center portion of a longitudinal length of the first region and the toe side, and a plurality of heel-side blades located between the center portion of the longitudinal length of the first region and the heel side;   a plurality of the flat-shaped blade elements of each of the toe-side blades are tilted toward the toe side or the heel side;   a plurality of the flat-shaped blade elements of each of the heel-side blades are tilted in a direction opposite to that of flat-shaped blade elements of the toe-side blades;   the flat-shaped blade elements which occupy both outer side portions of each of the toe-side blades with respect to a lateral direction of the first region are disposed in such a manner as to be divergent toward the toe side or the heel side as viewed from above; and   the flat-shaped blade elements which occupy both outer side portions of each of the heel-side blades with respect to a lateral direction of the first region are disposed in such a manner as to be divergent in a direction opposite to that of the flat-shaped blade elements of the toe-side blades as viewed from above   
     
     
         3 . A sole member of footwear according to  claim 1  or  2 , wherein the toe-side blades located at nearest position to the toe side or the heel-side blade located at nearest position to the heel side is formed of a single flat-shaped blade element having no slit. 
     
     
         4 . A sole member of footwear according to  claim 1  or  2 , wherein
 a first partition is formed between an inner peripheral wall of the first region and both lateral ends of the plurality of blades in such a manner as to rise from the upper surface of the first region; 
 a second partition is formed on an inner periphery side or an outer periphery side of the first partition in such a manner as to rise from a lower surface of the second region with a predetermined gap between the first partition and the second partition; 
 each of the first partition and the second partition has a plurality of grooves or cuts formed therein; and 
 the grooves or cuts formed in the first partition and the grooves or cuts formed in the second partition are disposed in such a manner as not to overlap each other as viewed from a direction along center lines of the grooves or cuts. 
 
     
     
         5 . A sole member of footwear according to  claim 3 , wherein
 a first partition is formed between an inner peripheral wall of the first region and both lateral ends of the plurality of blades in such a manner as to rise from the upper surface of the first region;   a second partition is formed on an inner periphery side or an outer periphery side of the first partition in such a manner as to rise from a lower surface of the second region with a predetermined gap between the first partition and the second partition;   each of the first partition and the second partition has a plurality of grooves or cuts formed therein; and   the grooves or cuts formed in the first partition and the grooves or cuts formed in the second partition are disposed in such a manner as not to overlap each other as viewed from a direction along center lines of the grooves or cuts.   
     
     
         6 . A sole member of footwear according to  claim 1  or  2 , wherein the sole member of footwear is an insole of the footwear or an outsole of the footwear. 
     
     
         7 . A sole member of footwear according to  claim 3 , wherein the sole member of footwear is an midsole of the footwear or an outsole of the footwear. 
     
     
         8 . A sole member of footwear according to  claim 4 , wherein the sole member of footwear is an midsole of the footwear or an outsole of the footwear. 
     
     
         9 . A sole member of footwear according to  claim 5 , wherein the sole member of footwear is an midsole of the footwear or an outsole of the footwear.