Abstract: A brushless motor includes a rotor, the rotor including magnets and a core member. The magnets are arranged around a rotating shaft and sequentially arrayed with N poles or S poles facing each other in a circumferential direction. The core member includes: an annular portion around the rotating shaft; an outer peripheral core part which supports the magnets on an outer peripheral side of the annular portion; and bridges which extend radially between the annular portion and the outer peripheral core part. Each of the bridges is positioned between the magnets adjacent to each other in the circumferential direction. The bridges include one or more first bridges extending over a first range corresponding to a partial range of the core member along a direction of the rotating shaft.

Abstract: A brushless motor includes a stator 11 which forms a rotating magnetic field, a rotor 12 which is rotated by the rotating magnetic field, a motor case 13 to which the stator 11 is attached, a bracket 16 which is interposed between the motor case 13 and a gear box 15, and a resolver 21 which detects the rotational angle of the rotor 12. The brushless motor further includes a first bearing 14 and a second bearing 20, which rotatably support the rotor 12. The first bearing 14 and the second bearing 20 are disposed at mutually different positions in the direction along the axis A serving as a rotation center of the rotor 12. In the direction along the axis A, the second bearing 20 is disposed on an interior side of the gear box 15 with respect to the position at which the bracket 16 is attached to the gear box 15. Accordingly, the moment generated when the rotor 12 vibrates can be reduced.

Abstract: In a nozzle vane driving control apparatus of a variable nozzle turbocharger including an actuator for carrying out a driving operation for opening and closing a nozzle vane of a variable nozzle and an ECU for controlling the opening degree of the nozzle vane which is obtained by the actuator, an actuator cover for covering a pinion and reduction gears by interposing a base provided integrally with a motor case portion therebetween, a unit body accommodating each of control boards, a position sensor for detecting the rotating position of an output shaft and a connector having a terminal connecting a motor and each of the control boards, and a unit cover for covering the unit body are removably fastened and fixed with a bolt and are thus integrated with each other.

Abstract: In a nozzle vane driving control apparatus of a variable nozzle turbocharger including an actuator for carrying out a driving operation for opening and closing a nozzle vane of a variable nozzle and an ECU for controlling the opening degree of the nozzle vane which is obtained by the actuator, an actuator cover for covering a pinion and reduction gears by interposing a base provided integrally with a motor case portion therebetween, a unit body accommodating each of control boards, a position sensor for detecting the rotating position of an output shaft and a connector having a terminal connecting a motor and each of the control boards, and a unit cover for covering the unit body are removably fastened and fixed with a bolt and are thus integrated with each other.