To achieve a structure capable of always arranging an energizing direction by an energizing member and a direction of engagement between a worm shaft and a worm wheel on the same straight line.SOLUTION: A direction of force applied from a first plate spring 45a consisting a first energizing member 22a to an outer peripheral surface of an outer ring 33 constituting a second bearing 20 and a direction of force applied from a second plate spring 45b consisting a second energizing member 22b to the outer peripheral surface of the outer ring 33 constituting the second bearing 20 is mirror-symmetrical to a virtual plane α.SELECTED DRAWING: Figure 4
【課題】付勢部材による付勢方向と、ウォーム軸とウォームホイールとの噛み合い方向とを、常に同一直線上に配置することができる構造を実現する。【解決手段】第一の付勢部材22aを構成する第一の板ばね45aから第二軸受20を構成する外輪33の外周面に加わる力の方向と、第二の付勢部材22bを構成する第二の板ばね45bから第二軸受20を構成する外輪33の外周面に加わる力の方向とを、前記仮想平面αに関して鏡面対称とする。【選択図】図4
WORM REDUCTION GEAR
ウォーム減速機
2019-01-17
Patent
Electronic Resource
Japanese