OPENING/CLOSING CONTROL MECHANISM OF DOOR BODY

To provide an opening/closing control mechanism of a door body capable of suitably controlling the opening/closing operation of a door body within the full opening range of the door body, and realizing a door (leaf) excellent in functionality and user-friendliness.SOLUTION: A mechanism A for controlling an opening/closing movement of a door body 3 provided for rotation about an axis O1 extending in the vertical direction T1 on a door tail side, includes: a closing mechanism A1, as a first opening/closing control mechanism, for adjusting a closing speed of the door body 3 within a specified opening range of the door body 3; and an impact absorbing mechanism A2, as a second opening/closing control mechanism, for controlling the opening/closing movement of the door body 3 within an opening range other than the specified opening range of the door body 3.SELECTED DRAWING: Figure 3 【課題】戸体の全開度範囲で戸体の開閉動作を好適に制御することができ、機能性に優れ、使い勝手の良いドア（扉）を実現することを可能にする戸体の開閉制御機構を提供すること。【解決手段】戸尻側の上下方向Ｔ１に延びる軸線Ｏ１周りに回動可能に設けられた戸体３の開閉動を制御する機構Ａであって、戸体３の所定の開度範囲で、戸体３の閉動速度を調整する第１開閉制御機構のクロージング機構Ａ１と、戸体３の所定の開度範囲以外の開度範囲で、戸体３の開閉動を制御する第２開閉制御機構の衝撃吸収機構Ａ２と、を備える。【選択図】図３