Worm gear clearance is adjustable to fall mechanism that makes an uproar

The utility model discloses a worm gear clearance is adjustable to fall mechanism that makes an uproar, intermeshing's worm wheel and worm set up in the casing for the worm bearing no. 1 of fixed wormone end goes up the cover and is equipped with bearing retainer, be provided with the steel band spring that acts on between bearing retainer and the casing and follow bearing retainer's radial direction removal on bearing retainer's the outer wall. The utility model discloses a worm gear clearance is adjustable to fall mechanism that makes an uproar adjusts the clearance between worm wheel and worm through the combination of steel band spring, bearing retainer and guide way, cushions among the reversing process impact of bearing retainer to the casing through the sealing washer simultaneously to reduce the switching -over noise. 本实用新型公开了种蜗轮蜗杆间隙可调降噪机构，所述相互啮合的蜗轮与蜗杆设置于壳体内，用于固定蜗杆端的蜗杆轴承上套设有轴承保持架，所述轴承保持架的外壁上设置有作用于轴承保持架与壳体之间且沿轴承保持架的径向方向移动的钢带弹簧。本实用新型的蜗轮蜗杆间隙可调降噪机构通过钢带弹簧、轴承保持架和导向槽的组合来调整蜗轮与蜗杆间的间隙，同时通过密封圈来缓冲换向过程中轴承保持架对壳体的冲击