| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor that is efficiently thinned. SOLUTION: In the motor of a motor unit having a detachable disc, a recess 214 is provided and opened toward a stator in the vicinity of a location at which a shaft 231 of a rotor is attached, and an upper part of a sleeve 232 is accommodated in the recess 214. A yoke 241 and a magnet 242 are disposed in the upper part of the sleeve 232. A magnetic suction force is generated between the magnet 242 and a bottom 2141 of the recess 214 and utilized as a magnetic bias. A removal preventing plate 243 is attached to an opening of the recess 214. The removal preventing plate 243 and the yoke 241 prevent the shaft 231 from separating from the sleeve 232. Since a magnetic bias structure and part of a removal preventing structure are provided in the recess 214 for thinning, the motor is efficiently thinned. COPYRIGHT: (C)2006,JPO&NCIPI
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