| 摘要 |
PURPOSE: A safety hook of a hinged door is provided to prevent the safety hook from becoming released by installing a locking unit in an end part of a fixed unit. CONSTITUTION: A safety hook of a hinged door is installed in a door frame and the hinged door. The safety hook comprises a fifth fixed unit, a first assembly unit, and a second assembly unit. A spring is inserted in between a third fixed unit and a fourth fixed unit to improve workability in a process of assembling the first fixed unit and second fixed unit. |
