Abstract: The motor as a whole is made smaller and lighter with a fixed shaft (10) as the main part, with this fixed shaft (10) inserted through and fixed to the center of a field magnet (11a) such that the field magnet (11a) placed roughly in the middle of the center axis of the fixed shaft (10) makes up the stator (11). The outer periphery of this field magnet (11a) is encompassed by the inner diameter of a cylindrical coil (12a), separated by a gap (G). Rotor plates (12b, 12c) are fitted so as to be free to rotate around the central axis of the fixed shaft (10) on both sides of the field magnet (11a), and these rotor plates (12b, 12c) are fitted into the ends of the coil (12a) and with it make up the rotor (12). A cylindrical yoke (13) is placed around the outer periphery of the coil (12a) and forms a single unit with it, and eccentric plates (14) around the outer periphery of the yoke make up the eccentric weight.