| 摘要 |
PROBLEM TO BE SOLVED: To reduce the number of parts and assure easier assembling by integrally molding a housing fixed to a stator frame and a bearing. SOLUTION: A rotor is composed of a rotor body 13 having fixed a permanent magnet 12 to the internal circumference of a cup type rotor frame 11, a rotating shaft 14 attached to this rotor body 13 and a transmission gear 15. On the other hand, the stator is composed of a stator frame 21, an integrated bearing 28 inserted with pressure to this stator frame 21, an O-ring 3b as a pre-pressurizing mechanism, a washer 31, an armature iron core 23 and an armature coil 24 and is then provided with a printed circuit board 25 mounting a drive circuit. Thereby, the number of parts can be reduced, assembling can be done easier and automatic assembling can also be realized by giving the housing function using the integrated bearing 28. |
