To realize, with a relatively simple configuration, a device for preventing a worker from falling in a hoistway when a landing door of an elevator is unlocked from a landing side due to, for example, a maintenance and inspection.SOLUTION: On a landing side, a fixed piece 22 and an auxiliary fixed piece 60 are provided. On a landing-door 4 side, an auxiliary hook 52 that is engaged with the auxiliary fixed piece 60 and an actuation body 50 with an auxiliary unlocking lever 56 are provided. A lock body 54 is pivotally attached to this actuation body 50. This lock body 54 has: a hook 16 that is engaged with the fixed piece 22; and an unlocking lever 33. To open a landing door 4 from a landing side for the purpose of, for example, maintenance and inspection, an unlocking key 35 inserted from a key hole 34 of the landing door 4 is rotated and the hook 16 and the fixed piece 22 are disengaged via the unlocking lever 33. Next, the landing door 4 is opened by a predetermined distance, the auxiliary unlocking lever 56 is operated, the auxiliary hook 52 and the auxiliary fixed piece 60 are thereby disengaged, and the landing door 4 is fully opened.SELECTED DRAWING: Figure 3

    【課題】 保守点検などでエレベータの乗場ドアを乗場側から解錠するときに、作業者が昇降路内へ転落することを防止するための装置を、比較的シンプルな構成で実現する。【解決手段】 乗場側には固定片22と補助固定片60を設ける。乗場ドア4側には、補助固定片60と係合する補助鉤52と補助解錠レバ−56を有する作動体50を設ける。この作動体50には、ロック体54を枢着する。このロック体54は、固定片22と係合する鉤16と解錠レバー33を有している。保守点検などで乗場側から乗場ドア4を開くときには、乗場ドア4の鍵穴34から挿入した解錠キー35を回転して、解錠レバー33を介して鉤16と固定片22の係合を外す。次に乗場ドア4を所定距離戸開し、補助解錠レバー56を操作して、補助鉤52と補助固定片60との係合を外し、乗場ドア4を全開する。【選択図】 図3


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    Title :

    UNLOCKING DEVICE FOR ELEVATOR LANDING DOOR


    Additional title:

    エレベータ乗場ドアの解錠装置


    Contributors:

    Publication date :

    2019-02-07


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B66B Aufzüge , ELEVATORS



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