| 摘要 |
<p>PROBLEM TO BE SOLVED: To propose a new constitution for regulating a fall of a waterproof plate, in a constitution for housing-storing the waterproof plate in an upper part such as a doorway of a building.SOLUTION: A waterproof plate device comprises a waterproof plate 1 movable along a vertically extending guide rail 21 and a regulation member 32 for regulating the waterproof plate 1 in moving on the guide rail 21 at a predetermined speed or more. According to such a waterproof plate device, the movement (a descent) of an ordinary waterproof plate is not regulated, and when causing a movement of the predetermined speed or more, for example, when the waterproof plate falls when a wire is cut, this fall can be regulated. The waterproof plate 1 can be prevented from descending on the guide rail 21 at the predetermined speed or more by regulation of this fall.</p> |
