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|1. (WO2018047766) DOOR STRUCTURE FOR SHELTER|
|Applicants:||SHELTER JAPAN CO., LTD.
|Title:||DOOR STRUCTURE FOR SHELTER|
The purpose of the present invention is to increase the safety of the door of a shelter during a disaster. A door structure 1 is provided with: a main body 2 having a curved surface 2a in which an opening 103 is formed; a first door frame 5 provided to the opening 103; an inner door 3 that serves as a sliding door provided along the curved surface 2a; a door pocket section 4 for accommodating the inner door 3; a tension rod 6 that makes it possible to fix the inner door 3 from the inside in a closed state; an outer door 7 that can be opened and closed and that is provided on the exterior of the inner door 3; and a second door frame 8 arranged in a direction that forms a predetermined angle (90° in this case) with the surface direction of the first door frame 5. The second door frame 8 has a structure that fixedly supports the outer door 7 when the outer door 7 is open.