FLOOD PREVENTION DEVICE FOR DOOR OPENING

To provide a flood prevention device for door opening capable of achieving a water stop effect for door opening without closing a door body with no need to close a gap between the door body and a door frame with putty, and the like.SOLUTION: A flood prevention device 1 includes: a water stop plate 11 that has close contact edges that come into close contact with surfaces on a door opening 81 side of each of a bottom side of left and right vertical door stops 83a and a door sill 83b of a door frame 83, and is arranged to close the bottom side of the door opening 81: a fixing plate 12 that faces the surfaces on the door opening 81 side of each of the lower side of the vertical door stops 83a and the door sill 83b and sandwiches the close contact edges of the water stop plate 11 with the surfaces on the door opening 81 side; and a male screw member 13 that moves the fixing plate 12 by being screwed into a female screw part formed on the door frame 83, and presses the close contact edges of the water stop plate 11 against surfaces on the door opening 81 side of each of the lower side of the vertical door stops 83a and the door sill 83b by the fixing plate 12.SELECTED DRAWING: Figure 1 【課題】ドア開口に対する止水効果を出すために扉体が閉められる必要が無く、パテ等で扉体とドア枠の隙間を塞ぐ必要もないドア開口の浸水抑止具を提供する。【解決手段】浸水抑止具１は、ドア枠８３の左右の縦戸当たり８３ａの下部側および沓摺８３ｂの各々のドア開口８１側の面に密着する密着縁部を有し、ドア開口８１の下部側を封鎖するように配置される止水板１１と、縦戸当たり８３ａの下部側および沓摺８３ｂの各々のドア開口８１側の面に対向して止水板１１の上記密着縁部をドア開口８１側の面との間で挟む固定板１２と、ドア枠８３に形成されている雌螺子部に螺合されることで固定板１２を移動させて、当該固定板１２によって止水板１１の上記密着縁部を、縦戸当たり８３ａの下部側および沓摺８３ｂの各々のドア開口８１側の面に押圧する雄螺子部材１３と、を備える。【選択図】図１