| 摘要 |
PROBLEM TO BE SOLVED: To provide a revolving double type door with a structure which prevents accidents such as injuries and broken bones by letting the hands and legs to be inadvertently caught between a rotary door and an outside shielding object and compressed. SOLUTION: A shielding article 1 having a quarter of a circle is arranged on both sides of the wall dividing the inside and outside and entrance/exit of a building, and a sub-revolving door 3 structure narrow in width, which is stopped at the tip end of the cross-shaped main rotary door 2 at the center of the entrance/exit, on a straight line with the main revolving doors, with a fixed positioning device (e.g. the axis part of the ceiling or the cylindrical cam of mountain/valley/mountain/valley arranged to stop at the valley with ball springs, or a method using the magnetic N-S poles or the like). Even if a person is held between the outside shielding object 1 and the main revolving door 2, the sub-revolving doors 3 rotate to allow the person to escape therefrom by himself. COPYRIGHT: (C)2006,JPO&NCIPI
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