| 摘要 |
<p>PURPOSE: To closes the top surface opening part of a storage case with a lid body when the lid body is closed, and to provide the fulcrum of rotation of the lid body at a position where the gap between the rear edge of the lid body and the storage case becomes larger as the opening extent of the lid body increases. CONSTITUTION: A protection cover 12 when released rotates around a hinge pin as a fulcrum of rotation and the gap between the rear edge of the protection cover 12 and the outer periphery of a pen case 13 becomes larger as the opening extent of the protection cover 12 increases. Thus, the gap between the rear edge of the protection cover 12 and the outer peripheral part of the pen case 13 is made larger as the opening extent of the protection cover 12 increases, so the danger that a finger, a palm, etc., is caught and injured when the protection cover 12 is released can securely be eliminated.</p> |
