| 摘要 |
PROBLEM TO BE SOLVED: To provide a door structure capable of preventing habitants from being confined therein when a large earthquake occurs. SOLUTION: An upper wall 3 tilting upward relative to a horizontal direction at the upper end of a door body 1 is installed in a door opening direction X, and a sloped surface 12 is formed also on the upper frame 11 of a door correspondingly to the upper wall. Also, a rotating member such as a roller in contact with the lower frame of the door is installed at the lower wall of the door body 1. Thus, when the door frame 10 is deformed by an earthquake, the door frame 10 pushes the upper wall 3 of the door body 1, and a force in the door opening direction X acts on the door body 1. The rotating member of the lower wall facilitates a door opening operation. COPYRIGHT: (C)2006,JPO&NCIPI
|
