| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a rolling bearing device suitable for preventing erroneous detection of a rotation sensor when a moment load is applied. <P>SOLUTION: A thin motor 100 is provided with a deep groove ball bearing 14 having an inner ring 14a and an outer ring 14b, a stator 22 supported by the inner ring 14a, a rotor 12 supported by the outer ring 14b, a motor part 16 imparting rotation torque to the rotor 12, and a resolver 30 for detecting a rotation angle position of the rotor 12. The resolver 30, the deep groove ball bearing 14 and the motor part 16 are arranged on a radial same plane. A permanent magnet 16a and a coil 16b are arranged to confront in the radial direction with the prescribed gap, and are arranged with a prescribed offset Δp in the axial direction so that the pre-load is imparted to the deep groove ball bearing 14 by magnetic attraction force generated between the permanent magnet 16a and the coil 16b in exitation of the coil 16b. <P>COPYRIGHT: (C)2008,JPO&INPIT |
