DOOR BODY CLOSING DEVICE

To provide a door body closing device in which door bodies can more appropriately close two openings existing at neighbor positions.SOLUTION: A door body closing device 100 comprises a first door body 10a for fully closing a first opening 2a and a second door body 10b for fully closing a second opening 2b when blowout panels closing a first opening 2a and a second opening 2b existing at neighbor positions on the same exterior wall surface of a building, respectively, are released, and a control device 30. The control device 30: synchronously starts closing operations of the first door body 10a and the second door body 10b in a state in which each of the blowout panels is released; moves the first door body 10a and the second door body 10b in a direction in which the door bodies are apart from each other from an open position that is a position for holding the first door body 10a and the second door body 10b in a state in which each of the blowout panels is hermetically sealed to predetermined closing positions for fully closing the first opening 2a and the second opening 2b; to thereby synchronously fully close the first opening 2a and the second opening 2b.SELECTED DRAWING: Figure 6 【課題】近傍位置に存在する２つの開口部を扉体により適切に閉止することができる扉体閉止装置を提供する。【解決手段】建屋の同一外壁面の近傍位置に存在する第１の開口部２ａと第２の開口部２ｂをそれぞれ閉止しているブローアウトパネルが開放されたとき、扉体閉止装置１００は、第１の開口部２ａを全閉する第１の扉体１０ａと、第２の開口部２ｂを全閉する第２の扉体１０ｂと、制御装置３０と、を備え、制御装置３０は、それぞれのブローアウトパネルが開放状態において、第１の扉体１０ａと第２の扉体１０ｂの閉止動作を同期して開始し、それぞれのブローアウトパネルが密閉状態において第１の扉体１０ａと第２の扉体１０ｂの保持位置である開位置から、第１の開口部２ａおよび第２の開口部２ｂを全閉する所定の閉位置まで、第１の扉体１０ａと第２の扉体１０ｂが互いに離間する方向に移動して、第１の開口部２ａと第２の開口部２ｂを同期して全閉する。【選択図】図６