MOTOR

PROBLEM TO BE SOLVED: To provide a motor capable of preventing a magnet of a rotor from being attracted to a stator even when a slide bearing for supporting a rotary shaft is displaced in a direction away from the rotary shaft and the rotary shaft is displaced in a radial direction.SOLUTION: A motor 1 comprises a slide bearing 7 which has a projection 75 for surrounding an end portion 2e of a rotary shaft 2 at the outside in a radial direction. Ga is smaller than Gb: where Ga represents a gap dimension between an outer peripheral surface 2c of the end portion 2e of the rotary shaft 2 at a counter-output side L2 and an inner peripheral surface 75c of the projection 75; and Gb represents a gap dimension between an outer peripheral surface 3c of a magnet 3 and an inner peripheral surface 10c of a stator 10. La is shorter than Lb: where La represents a movable length of the slide bearing 7 to the counter-output side L2; and Lb represents a length where the outer peripheral surface 2c of the end portion 2e of the rotary shaft 2 and the inner peripheral surface 75c of the projection 75 face each other in a motor axial direction L. Thus, displacement of the rotary shaft 2 is restricted by the projection 75 of the slide bearing 7 even when the slide bearing 7 is displaced to the counter-output side L2 most and displaced outward in a radial direction of the rotary shaft 2. 【課題】回転軸を支持するスライド軸受が回転軸から離間する方向に変位して回転軸が径方向に変位した場合でも、ロータの磁石がステータに吸着されてしまうことを防止することのできるモータを提供すること。【解決手段】モータ１において、スライド軸受７には、回転軸２の端部２ｅを径方向外側で囲む凸部７５が形成され、回転軸２の反出力側Ｌ２の端部２ｅの外周面２ｃと凸部７５の内周面７５ｃとの隙間寸法Ｇａは、磁石３の外周面３ｃとステータ１０の内周面１０ｃとの隙間寸法Ｇｂより狭い。また、スライド軸受７の反出力側Ｌ２への可動距離Ｌａが、回転軸２の端部２ｅの外周面２ｃと凸部７５の内周面７５ｃとの対向部分のモータ軸線方向Ｌにおける寸法Ｌｂより短い。従って、スライド軸受７が反出力側Ｌ２に最も変位して回転軸２の径方向外側に変位しても、回転軸２の変位はスライド軸受７の凸部７５によって制限される。【選択図】図２