| 摘要 |
PURPOSE:To accurately obtain a torque and a rotating speed necessary for a motor by magnetically attracting a rotor and a stator, thereby always suitably pressing an elastic unit and a slider by a suitable pressing force. CONSTITUTION:A ring-shaped magnet 17 is bonded to the lower surface of a rotor 12, and a magnetic unit 18 is bonded to a stator substrate 10 through a magnet 10 and the prescribed interval (d). A spring 19 is provided to be energized in an elongating direction between a bearing 13 and the substrate 10. The rotor 12 is moved axially against a spring 19 by the attracting force of the magnet 17 to the unit 18, thereby press-bonding the slider 14 to the unit 3. |
