Shock absorbing structure and shoe to which the shock absorbing structure is applied

Abstract

A shock absorbing structure is formed by including a column member, an elastic ring member that is provided by being fitted onto the column member, and upper and lower pressure receiving portions that are connected by the column member, wherein the column member is capable of being deformed and restored at least in a pressure receiving direction, the ring member has an effective working height set to be lower than the column member, and is formed to be in a non-bonded state with the upper and lower pressure receiving portions, and at a time of pressure reception, the column member undergoes compression deformation in the pressure receiving direction first, and thereafter, the ring member undergoes compression deformation in the pressure receiving direction next, whereby multi-stage shock absorbing performance is exhibited.

1 . A shock absorbing structure, comprising:
 a column member;   an elastic ring member that is provided by being fitted onto the column member; and   upper and lower pressure receiving portions that are connected by the column member,   wherein the column member is capable of being deformed and restored at least in a pressure receiving direction,   the ring member has an effective working height set to be lower than the column member, and is formed to be in a non-bonded state with the upper and lower pressure receiving portions, and   at a time of pressure reception, the column member undergoes compression deformation in the pressure receiving direction first, and thereafter, the ring member undergoes compression deformation in the pressure receiving direction next, whereby multi-stage shock absorbing performance is exhibited.   
     
     
         2 . The shock absorbing structure according to  claim 1 ,
 wherein a ratio of the effective working height of the ring member is 0.2 to 0.95 with respect to the column member.   
     
     
         3 . The shock absorbing structure according to  claim 1 ,
 wherein at least one of the column member and the ring member is formed in such a manner that an effective working height is not constant throughout an entire circumference.   
     
     
         4 . The shock absorbing structure according to  claim 1 ,
 wherein the column member is formed of a foam, and the ring member is formed from a solid material.   
     
     
         5 . The shock absorbing structure according to  claim 1 ,
 wherein a hardness of the column member is an Asker C hardness of 30 to 100 or a JIS A hardness of 40 to 120, and a hardness of the ring member is a JIS A hardness of 30 or less.   
     
     
         6 . The shock absorbing structure according to  claim 1 ,
 wherein a ring bulging space in a depressed concave shape is formed in at least either one of contact faces of the ring member and the column member.   
     
     
         7 . The shock absorbing structure according to  claim 1 ,
 wherein a bulging restriction portion that restricts bulging deformation of the ring member is provided in at least a part of an outside of the ring member.   
     
     
         8 . The shock absorbing structure according to  claim 1 ,
 wherein at least one of the ring member and the column member is formed by being configured by parts having a plurality of different materials or different repulsive forces.   
     
     
         9 . The shock absorbing structure according to  claim 1 ,
 wherein the column member is formed by combining a plurality of members, and the members are configured to deform movably in the pressure receiving direction.   
     
     
         10 . The shock absorbing structure according to  claim 1 ,
 wherein the ring member is attached to the column member detachably and attachably.   
     
     
         11 . A shoe formed by incorporating a shock absorbing structure that absorbs impact that is applied to a leg of a wearer at a time of landing on a ground, into a sole,
 wherein the shock absorbing structure according to  claim 1  is applied to the shock absorbing structure.   
     
     
         12 . The shoe according to  claim 11 ,
 wherein the shock absorbing structure is provided on a bottom face of the sole.