Shock-absorbing Structure for a Sole and Sole for a Shoe having Same

Abstract

A shock-absorbing structure for a sole includes a wavy sheet laminated body in which a plurality of wavy sheets of a wave shape are laminated in the up-down direction to compose three or more layers, one-end sidewall portion provided at one end side in the wave direction of the wave shape of the wavy sheet laminated body and restraining the plurality of wavy sheets, the other-end sidewall portion provided at the other end side in the wave direction of the wave shape of the wavy sheet laminated body and restraining the plurality of wavy sheets, and a connecting portion in which at least a portion of a contact region of the plurality of wavy sheets is connected to one another.

What is claimed is: 
     
         1 . A shock-absorbing structure for a sole comprising:
 a wavy sheet laminated body in which a plurality of wavy sheets of a wave shape are laminated in an up-down direction to compose three or more layers;   one-end sidewall portion that is provided at one end side in a wave direction of said wave shape of said wavy sheet laminated body and that restrains said plurality of wavy sheets;   the other-end sidewall portion that is provided at the other end side in said wave direction of said wave shape of said wavy sheet laminated body and that restrains said plurality of wavy sheets; and   a connecting portion in which at least a portion of a contact region of said plurality of wavy sheets is connected to one another.   
     
     
         2 . The shock-absorbing structure according to  claim 1  further comprising an upper-side wall portion provided on and cover an upper side of said wavy sheet laminated body and a lower-side wall portion provided on and cover a lower side of said wavy sheet laminated body,
 wherein said upper-side wall portion and said lower-side wall portion are connected to said one-end sidewall portion and said the other-end sidewall portion; 
 wherein said wavy sheet laminated body is surrounded by said one-end sidewall portion, said other-end sidewall portion, said upper-side wall portion and said lower-side wall portion. 
 
     
     
         3 . The shock-absorbing structure according to  claim 1 , wherein said contact region of said plurality of wavy sheets is a region in which a trough portion of said wave shape of said wavy sheet disposed on an upper side is contacted with a crest portion of said wave shape of said wavy sheet disposed on a lower side. 
     
     
         4 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body further comprises a control member that is disposed at least either at one end side or at the other end side in a direction perpendicular to both said wave direction and said up-down direction of said wave shape of said wavy sheet laminated body and that is configured and adapted to control deformation of said wavy sheet. 
     
     
         5 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body further comprises a control member that is disposed at an intermedia position between one end side and the other end side in a direction perpendicular to both said wave direction and said up-down direction of said wave shape of said wavy sheet laminated body and that is configured and adapted to control deformation of said wavy sheet. 
     
     
         6 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body, said one-end sidewall portion and said other-end sidewall portion are formed of an elastic material. 
     
     
         7 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body, said one-end sidewall portion and said other-end sidewall portion are formed integrally with one another. 
     
     
         8 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body, said one-end sidewall portion and said other-end sidewall portion are formed by an additive manufacturing method. 
     
     
         9 . The shock-absorbing structure according to  claim 8 , wherein said additive manufacturing method is a fused-deposition-modeling type. 
     
     
         10 . The shock-absorbing structure according to  claim 1 , wherein a plate-like member having a foot sole contact surface is provided on an upper side of said wavy sheet laminated body. 
     
     
         11 . The shock-absorbing structure according to  claim 1 , wherein said wavy sheet laminated body is composed of four or more layers of wavy sheets laminated in said up-down direction. 
     
     
         12 . A sole for a shoe comprising said shock-absorbing structure according to  claim 1 , wherein said shock-absorbing structure is disposed at least either at a sole heel region or at a sole forefoot region. 
     
     
         13 . A sole for a shoe comprising said shock-absorbing structure according to  claim 1 , wherein said shock-absorbing structure extends from a sole heel region through a sole midfoot region to a sole forefoot region.