| 摘要 |
PURPOSE: A folding helmet is provided to be easily manufactured by integrally molding a half cap body including a hinge structure between a center cell and a circumjacent cell with a synthetic resin material. CONSTITUTION: A folding helmet divides a cap body (1) of a hemispherical cell shape into two half cap bodies along a center line passing center of a parietal region. The two center half cap bodies are divided into a center cell (3a) and multiple circumjacent cells (3b,3c,3d). The center cell and the circumjacent cell are connected with a rotational hinge structure. The circumjacent cell and the circumjacent cell of a one half cap are separated and become a contactable state. The corresponding circumjacent cell and the circumjacent cell of the two half cap bodies which are located on the outer circumference surface are connected with the rotational hinge structure. |
