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    • 6. 发明授权
    • Underground evacuation shelter
    • US10428548B2
    • 2019-10-01
    • US15580886
    • 2016-06-10
    • SHELTER JAPAN Co., Ltd.
    • Akihiko Yano
    • E04H9/02E04H9/14E04B1/343E02D29/045E04H9/08
    • The purpose of the invention is to reduce a cost and a construction period, secure measures for stability of the shelter main body against a tsunami, water pressure resistant performance against the tsunami generated by the Nankai Trough Great Earthquake, safety performance necessary for using the evacuation shelter, and good living comfort, and shorten evacuation time.The shelter main body 3 is connected to the concrete foundation 2 and has a structure with the frame 3a of a columnar structure, the ceiling 3b, and the internal space 9 of a columnar structure. The inner hatch 5 is attached to the periphery of the opening 4 provided in the ceiling 3b by a hinge in an openable and closable manner. A rising portion 6 rises upward from the peripheral edge of the opening 4. The outer hatch 7 is connected to the upper surface of the rising portion 6 by a hinge 7a in an openable and closable manner. A pair of rails 8 is arranged in the vertical direction on the inner wall surface of the frame 3a of a columnar structure of the shelter main body 3. The movable floor 10 is capable of moving up and down inside the internal space 9 along the rails 8.