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 31 on an outer peripheral surface; a guide member 29 having a concave part 55 curving along an outer peripheral surface of the rotary shaft 28 and facing the outer peripheral surface of the rotary shaft 28, and a guide groove 33 which is recessed from the concave part 55 to the radial outer side and provided over an entire length of a range in which a spiral groove 31 exists with respect to an axial direction of the rotary shaft 28; and a ball 30 disposed between the spiral groove 31 and the guide groove 33 and serving as a movable member. A portion which exists at the same position as an end 32 of the spiral groove 31 with respect to the axial direction of the rotary shaft 28, of the guide groove 33 extends in a direction inclining relative to the axial direction of the rotary shaft 28.SELECTED DRAWING: Figure 7

    【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31を有する回転軸28と、回転軸28の外周面に沿って湾曲し、かつ、回転軸28の外周面と対向する凹面部55、および、凹面部55から径方向外側に凹入し、かつ、回転軸28の軸方向に関して螺旋溝31が存在する範囲の全長にわたり備えられたガイド溝33を有するガイド部材29と、螺旋溝31とガイド溝33との間に配置された移動部材である玉30とを備える。ガイド溝33のうちで、回転軸28の軸方向に関して螺旋溝31の端部32と同じ位置に存在する部分が、回転軸28の軸方向に対して傾斜した方向に伸長している。【選択図】図7


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    Title :

    ROTATION RESTRICTION DEVICE AND STEERING DEVICE


    Additional title:

    回転制限装置およびステアリング装置


    Contributors:

    Publication date :

    2022-10-31


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Japanese


    Classification :

    IPC:    B62D MOTOR VEHICLES , Motorfahrzeuge



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