PROBLEM TO BE SOLVED: To provide a worm reduction gear which suppresses a friction resistance torque difference generated by a difference of rotational directions.SOLUTION: A center axial line C1 of a worm shaft 18 intersects with a center axial line C2 of a worm wheel 19, and is offset to an offset direction OFF with respect to a plane P which is arranged at a center position WC of the worm wheel 19 in a tooth width direction W. An energizing member 60 energizes a second end part 18b of the worm shaft 18 to a preload direction Y2 in which an inter-center distance D1 between the worm shaft 18 and the worm wheel 19 is reduced. When the worm shaft 18 is formed into a right screw shape, a first end part side X1 (electric motor 24 side) of the worm shaft 18 in an axial direction is equivalent to a thumb direction LT at a left coordinate system. The preload direction Y2 is equivalent to a forefinger direction LI. The offset direction OFF is equivalent] to a middle finger direction LM.SELECTED DRAWING: Figure 5

    【課題】回転方向の相違による摩擦抵抗トルク差を抑制するウォーム減速機を提供する。【解決手段】ウォームシャフト18の中心軸線C1が、ウォームホイール19の中心軸線C2とは直交し且つウォームホイール19の歯幅方向Wの中央位置WCに配置される平面P対して、オフセット方向OFFにオフセットされる。付勢部材60が、ウォームシャフト18の第2端部18bを、ウォームシャフト18とウォームホイール19との中心間距離D1が減少する予圧方向Y2に付勢する。ウォームシャフト18が右ねじ状である場合、左手座標系において、ウォームシャフト18の軸方向第1端部側X1(電動モータ24側)が親指方向LTに相当する。予圧方向Y2が人指し指方向LIに相当する。オフセット方向OFFは中指方向LMに相当する。【選択図】図5


    Access

    Download


    Export, share and cite



    Title :

    WORM REDUCTION GEAR


    Additional title:

    ウォーム減速機


    Contributors:

    Publication date :

    2016-04-21


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    F16H Getriebe , GEARING / B62D MOTOR VEHICLES , Motorfahrzeuge



    WORM REDUCTION GEAR

    NAKAGAWA HIKARU | European Patent Office | 2022

    Free access

    WORM REDUCTION GEAR

    FUJITA TETSUEI | European Patent Office | 2019

    Free access

    WORM REDUCTION GEAR

    FUJITA TETSUEI | European Patent Office | 2018

    Free access

    WORM REDUCTION GEAR AND ASSEMBLY METHOD FOR WORM REDUCTION GEAR

    SEGAWA TORU / ISHII TORU | European Patent Office | 2016

    Free access

    WORM REDUCTION GEAR AND ASSEMBLY METHOD FOR WORM REDUCTION GEAR

    SEGAWA TORU | European Patent Office | 2016

    Free access