Brushless motor

A brushless motor comprising:

• a motor part;
• and
• a gear part, wherein
• the motor part comprises:
• a rotating shaft, having a first gear provided on a tip side thereof;
• a rotor, having a bottom wall and a side wall, the bottom wall being fixed to a base end side of the rotating shaft;
• a plurality of magnets, fixed to the side wall and arranged side by side in a circumferential direction of the rotor;
• a stator, provided between the rotating shaft and the plurality of magnets in a radial direction of the rotor and wound with a coil;
• and
• a motor housing, rotatably supporting the rotating shaft, and accommodating the rotor and the stator;
• the gear part comprises:
• a second gear, meshed with the first gear;
• an output shaft, having an output part provided on a tip side thereof, having a base end side thereof fixed to the second gear, and parallel to the rotating shaft;
• and
• a gear housing, rotatably supporting the output shaft, and accommodating the second gear,
• a bearing, rotatably supporting the rotating shaft at a location more toward the tip side of the rotating shaft than the first gear, the bearing is accommodated inside the gear housing,
• wherein the first gear is a pinion gear having one spiral tooth;
• and the second gear is a helical gear having an oblique tooth with which the one spiral tooth is meshed,
• wherein a backup member is disposed adjacent to the first gear, and the backup member is arranged to partially surround the first gear,
• wherein the backup member is separate from the gear housing,
• wherein in an axial direction of the rotating shaft, at least a part of the bearing and a part of the backup member overlap.