Insole structure

Abstract

An insole structure includes a supporting layer, a buffer layer and a surface layer orderly superposed together. The supporting layer is provided thereon with an intermediate bulgy block, an arch bulgy block and a heel bulgy block. The buffer layer is disposed with an intermediate buffer portion, an arch buffer portion and a heel buffer portion at locations respectively corresponding with the intermediate bulgy block, the arch bulgy block and the heel bulgy block of the supporting layer. By so designing, the insole structure of this invention is able to rectify a user's foot shape and comfortable in wearing and to produce the insole structure, only need to have the buffer layer directly stuck to the supporting layer, able to greatly simplify manufacturing procedures, shortening labor hours and lower producing cost.

What is claimed is: 
     
         1 . An insole structure comprising:
 a supporting layer bent into a curved surface for corresponding with a person's foot shape, said supporting layer having upper sides provided with an intermediate bulgy block, an arch bulgy block and a heel bulgy block respectively corresponding with a middle portion, an arch portion and a heel portion of a person's foot;   a buffer layer made of material softer than said supporting layer, said buffer layer having upper sides disposed with an intermediate buffer portion and an arch buffer portion and a heel buffer portion at locations respectively corresponding to said intermediate bulgy block and said arch bulgy block and heel bulgy block of said supporting layer; and   a surface layer superposed on a surface of said buffer layer.   
     
     
         2 . The insole structure as claimed in  claim 1 , wherein said buffer layer has a topside first provided with a bulgy portion at a location corresponding to said intermediate bulgy block of said supporting layer and then, said intermediate buffer portion is positioned on said bulgy portion. 
     
     
         3 . The insole structure as claimed in  claim 2 , wherein said bulgy portion extends toward said heel buffer portion from said intermediate buffer portion and gradually tapers to form a triangular shape. 
     
     
         4 . The insole structure as claimed in  claim 1 , wherein said buffer layer has undersides formed with an intermediate positioning recess and an arch positioning recess and a heel positioning recess at locations respectively corresponding with said intermediate bulgy block and said arch bulgy block and said heel bulgy block of said supporting layer. 
     
     
         5 . The insole structure as claimed in  claim 1 , wherein said supporting layer is integrally made of ethylene vinyl acetate copolymer (EVA), while said buffer layer is integrally made of high-density foam. 
     
     
         6 . The insole structure as claimed in  claim 1 , wherein said surface layer is made of synthetic suede.