| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an insole capable of fulling assisting the function of the arch of a foot.SOLUTION: The insole includes a leaf spring member and a cushion part 1 laminated thereon. The leaf spring member is arch-shaped extending in the longitudinal direction and, with the apex of the arch shape faced upward, the bottom of the insole 10 is grounded on the ground surface. In this state, a load is applied to the apex of the leaf spring member in the insole 10 from the direction vertical to the grounding surface. As a result, the traveling distance in which a region superimposed on the apex in the bottom of the insole travels from the no-load state until the contact with the grounding surface is not less than 3.9% and not more than 6% of the length L (mm) in the longitudinal direction of the cushion part 1. The maximum value F(N) of the load when the region superimposed on the apex in the bottom of the insole 10 travels from the no-load state until the contact with the grounding surface satisfies the following conditions: F is equal to or larger than 0.15×9.8×(3000L+20.5) and is equal to or smaller than 0.50×9.8×(3000L+20.5).</p> |
