| 摘要 |
<p>A flat brushless motor for generating vibration used as a paging means of a portable communication device such as a radio pager. The flat brushless motor has a back yoke (5a) of which the center of gravity is deviated from the center of rotation. Vibration is generated as an unbalanced back yoke (5a) rotates. Since no weight is used for generating vibration, the thickness can be reduced and the number of parts can be descreased, too.</p> |
