| 摘要 |
PURPOSE: A safety door is provided to prevent the injury caused by getting fingers caught in a gap between a hinged door and a doorframe. CONSTITUTION: The safety door comprises the steps of forming one end of a hinged door(20) in the semicircular shape, forming a bolt fitting hole(21) provided with a nut groove(22) to interpose a nut(30), locating a nut(30) to the nut groove(22) and interposing a multistage bolt(31) to the bolt fitting hole(21) to form a rotary unit, forming a doorframe groove(13) on one end, and installing one end of a bolt(31) to a bearing(12) of a doorframe(10) fixed with a bearing(12).
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