| 摘要 |
PURPOSE: A check valve for an air ventilative insole is provided to reduce fatigue and to improve wearing sensation. CONSTITUTION: A check valve for an air ventilative insole comprises a check valve frame(32) which is hollow and is formed in the shape of a rectangular parallelepiped, a cylindrical valve body(31) which is made of rubber or soft synthetic resin and surrounds the check valve frame, and a valve film(33) which is exposed to the outside through the inside of the check valve frame and is formed with a cut-out part in the center. |
