| 摘要 |
PURPOSE: A motor is provided to control the lower side of the inner circumferential face of a bearing member by arranging a second gap between the bearing member and a bearing retention cylindrical part. CONSTITUTION: A shaft(41) is arranged within a bearing member(42) with a central axis(J1) as the center. Top of the shaft is fixed to a central cylinder part(212b) of a rotor holder(21). A rotor magnet(22) is fixed to the inner circumferential face of the cylindrical body of the rotor holder. The bearing member is inserted into a bearing retention member(43). A stator(3) is arranged in the inner side of a diametric direction of the rotor magnet. A mounting plate(12) is fixed to the bearing retention member. The bearing retention member comprises a bearing retention cylindrical part and a flange part. |
