Patent ID: 8082561

Claim:
A motor comprising: a rotating body including a rotor magnet rotatable about a rotational axis and a rotor holder that holds the rotor magnet; and a fixed body including a stator arranged to oppose the rotor magnet; wherein the stator includes: a stator core having an annular core back portion, and a plurality of circumferentially spaced-apart tooth portions extending from the core back portion in a direction away from the rotational axis; and a plurality of coils provided by winding a conductive wire around the tooth portions of the stator core with multiple turns; the rotor holder is arranged axially above the stator to cover the stator; and an annular or arc-shaped attracting magnet arranged to attract the rotor holder toward the stator is arranged radially inwardly of the core back portion, the attracting magnet having an upper surface axially facing toward the rotor holder and a lower surface arranged axially below the upper surface of the core back portion of the stator core; wherein a magnetic yoke is arranged on the lower surface of the attracting magnet; and the yoke has an annular or arc shape, and has a radial width smaller than that of the attracting magnet.