Importance

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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.

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First Claim