PROBLEM TO BE SOLVED: To maintain airtightness even when an atmospheric pressure difference having occurred between inside and outside of a car due to atmospheric pressure control, pushes a door toward either outside or inside of the car.SOLUTION: A car door airtightness device 18 comprises: a rotatable airtight mechanism body 26; a pushing airtight member 27 for holding airtightness; an airtight sealing valve 28 which is elastically deformed according to pressure application or pressure reduction in the car, and closes a gap between the airtight mechanism body and the car; a rod 30; an engagement roller 31; and an inclination cam 32 which is engaged to the engagement roller on a car side, in door closing time of the door 12. When the engagement roller and the inclination cam are engaged, the airtight mechanism body rotates and brings the pushing airtight member into contact with the door, and a distance from the pushing airtight member to the rotation shaft 25 is configured to be larger than a distance from the engagement roller to the rotation shaft, and a direction of force which is applied when the engagement roller contacts the inclination cam, is same to a direction to which the door is pressed by atmospheric pressure in the car, when pressure in the car becomes higher than pressure outside of the car.SELECTED DRAWING: Figure 4

    【課題】気圧制御で乗りかご内外に気圧差が生じ、ドアがかご外側、内側どちらに押し出されても、気密性を維持する。【解決手段】乗りかごドア気密装置18は、回転可能な気密機構ボディ26と、気密性を保持する押込み気密部材27と、乗りかご内の加圧又は減圧に応じて弾性変形し、気密機構ボディと乗りかご間の隙間を塞ぐ気密封止弁28と、ロッド30と、係合ローラ31と、ドア12の閉扉時に係合ローラと乗りかご側で係合する傾斜カム32とを備え、係合ローラと傾斜カムが係合すると、気密機構ボディは回転して押込み気密部材をドアに接触させ、かつ、係合ローラ及び押込み気密部材の回転軸25からの距離は、係合ローラより押込み気密部材のほうが大きくなるように設けられ、係合ローラが傾斜カムと接触し加えられる力の向きが、乗りかご内の圧力が乗りかご外の圧力より高くなった際に、乗りかご内の気圧によりドアを押圧する方向と同一方向である。【選択図】図4


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    Title :

    CAR DOOR AIRTIGHT DEVICE AND ELEVATOR DEVICE


    Additional title:

    乗りかごドア気密装置及びエレベーター装置


    Contributors:

    Publication date :

    2017-12-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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