To provide a rotation restriction device which has a small radial dimension and can make a load, acting on a member whose rotation amount is limited, almost equal regardless of a rotation direction of a rotary shaft.SOLUTION: A rotation restriction device includes: a rotary shaft 28 having a spiral groove 36 on an outer peripheral surface; a guide member 29 having a guide groove 38, which is provided over an entire length of a range in which the spiral groove 36 exists with respect to an axial direction of the rotary shaft 28, at a position facing the outer peripheral surface of the rotary shaft 28; a ball 30 disposed between the spiral groove 36 and the guide groove 38 and serving as a movable member; and a case 31 which has a holding hole 43 extending in a radial direction of the rotary shaft 28 and holds the guide member 29 at the inner side of the holding hole 43. An outer peripheral surface of the guide member 29 and an inner peripheral surface of the holding hole 43 are fitted in a non-circular form.SELECTED DRAWING: Figure 5
【課題】径方向寸法を小さく抑えられ、かつ、回転軸の回転方向にかかわらず、回転量を制限する部材に作用する荷重をほぼ等しくできる回転制限装置を提供する。【解決手段】外周面に螺旋溝36を有する回転軸28と、回転軸28の外周面と対向する位置に、回転軸28の軸方向に関して螺旋溝36が存在する範囲の全長にわたり備えられたガイド溝38を有するガイド部材29と、螺旋溝36とガイド溝38との間に配置された移動部材である玉30と、回転軸28の径方向に伸長する保持孔43を有し、かつ、該保持孔43の内側にガイド部材29を保持するケース31とを備え、ガイド部材29の外周面と保持孔43の内周面とが非円形嵌合している。【選択図】図5
ROTATION RESTRICTION DEVICE AND STEERING DEVICE
回転制限装置およびステアリング装置
2022-10-31
Patent
Electronic Resource
Japanese
IPC: | B62D MOTOR VEHICLES , Motorfahrzeuge |
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