Insole for footwear

Abstract

The present invention aims at controlling the balance of a skeletal structure of a foot of a user, and reducing the stress applied on the feet or body of the user wearing the footwear. In order to realize the above objects, the present invention provides an insole 1 for a footwear, having an elevated convexed center section 2 formed on a contact surface to be in contact with a foot, positioned at an intermediate area between a portion corresponding to a base of a big toe of the foot and a portion corresponding to a base of a little toe of the foot, and a concaved center section 3 formed on the contact surface in contact with the foot, positioned on both sides of the convexed section 2 , and extending from the portion corresponding to the base of the big toe or the portion corresponding to the base of the little toe to the portion corresponding to a heel.

What is claimed is: 
     
         1 . An insole for a footwear comprising:
 an elevated convexed section formed on a contact surface to be in contact with a foot, positioned at an intermediate area between a portion corresponding to a base of a big toe of the foot and a portion corresponding to a base of a little toe of the foot; and   a concaved section formed on the contact surface in contact with the foot, positioned on both sides of the convexed section, and extending from the portion corresponding to the base of the big toe or the portion corresponding to the base of the little toe to the portion corresponding to a heel.   
     
     
         2 . The insole for a footwear according to  claim 1 , wherein
 the insole further comprises a linear convexed section formed on a bottom surface of the insole for footwear coming in contact with an inner sole of the footwear, formed along a curved line connecting base portions of the respective toes of the foot from the portion corresponding to the base of the big toe to the portion corresponding to the base of the little toe.   
     
     
         3 . The insole for a footwear according to  claim 1 , wherein
 the insole further comprises a hard support means disposed on a bottom surface of the insole for footwear coming in contact with an inner sole of the footwear and designed to cover the portion corresponding to base portions of respective toes of the foot to the portion corresponding to the heel;   wherein the support means comprises:   a first void section disposed between the portion corresponding to the base of the big toe and the portion corresponding to the heel, which is filled integrally with the insole using the material constituting the insole; and   a second void section having a smaller area than the first void section and disposed between the portion corresponding to the base of the little toe and the portion corresponding to the heel, which is filled integrally with the insole using the material constituting the insole.   
     
     
         4 . The insole for a footwear according to  claim 3 , wherein
 the first void section is composed of multiple holes; and   the second void section is composed of a smaller number of holes than said multiple holes.