SWING DOOR MECHANISM

To automate the opening and closing movements of swing doors, while suppressing, even upon the automation, the vertical vibration that is caused at a rotating part in which a tip part of a transmission member and a tip part of a rotation member are rotatable.SOLUTION: A swing door mechanism transmits the rotation created with a motor to a follower pulley 54 arranged on the revolving shaft of an electromagnetic brake 52 via a main pulley and a timing belt 35, and comprises a transmission member 60 of which a tip part 60a is connected to the revolving shaft of the electromagnetic brake 52, and a rotation member 62 that is rotatably connected to the other tip 60c of the transmission member 60 via a first rotation part 70. The first rotation part 70 comprises a bolt 72 that comprises a shank part 72d that is movably inserted through the first and second holes. The shank part 72d has a double thread 72n formed with a first thread and a second thread, being fitted with a first nut 74 screwed on the first thread and a second nut 76 screwed on the second thread.SELECTED DRAWING: Figure 3 【課題】スイングドアの開閉を自動化すると共に、自動化しても、伝達部材の端部と回動部材の端部とが回動可能な回動部から生じる上下方向の振動を抑制する。【解決手段】スイングドア機構は、モータの回転により主プーリー、タイミングベルト３５を介して、電磁ブレーキ５２の回転軸に設けられた従動プーリー５４に伝達し、電磁ブレーキ５２の回転軸に一端部６０ａが連結固定された伝達部材６０と、伝達部材６０の他端部６０ｃに第１の回動部７０を介して回転可能に連結され回動部材６２とを備え、第１の回動部７０は、第１及び第２の孔を遊挿する胴部７２ｄを有するボルト７２を有し、胴部７２ｄには、第１のねじと第２のねじとから成る二重ねじ７２ｎが形成されており、第１のねじに螺合する第１のナット７４と、第２のねじに螺合する第２のナット７６とを備えている。【選択図】図３