| 摘要 |
PROBLEM TO BE SOLVED: To decrease the number of parts, to reduce man-hours at the time of assembly and to facilitate assembly work. SOLUTION: This microvibration motor 1-1 is constituted by fixing an eccentric weight 11 for vibration generation offcentered with a revolving shaft 4 projected at one end in such a manner that its centroid rotates circumferentially to the revolving shaft 4. The motor has a motor housing 3-1 of a cylindrical type, a field magnet 9 of a cylindrical type, a magnet holding part 36-1 for holding this field magnet 8 in the motor housing 3-1, a bearing part 6-1 which freely rotatably and pivotally supports the revolving shaft 4 and is dispose at one end aperture of the motor housing 3-1, a cylindrical type coreless armature 10 which is fixed to the revolving shaft 4 and rotates within the motor housing 3-1 and a brush 17. The motor has a brush holder 14 holding the brush 17 at the operative at the other end of the motor housing 3-1. In such case, the bearing part 6-1 and the magnet holding part 36-1 are integrally formed.
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