| 摘要 |
PROBLEM TO BE SOLVED: To mass-produce a micro flat vibrating motor whose brushes are made to be of a linear shape by dividing a magnet into two, whose performance is further improved, that is easy to manufacture, and whose cost can be cut, based on a basic structure of a "two coil/two magnet/three commutator segment/forward brush" system for the micro flat vibrating motor. SOLUTION: The basic structure of an abbreviated "2-2-3 system" micro flat vibrating motor has the "two coils/two magnetic poles/three commutator segments/forward direction brushes." Linear brushes are used between an N-pole sector magnet and an S-pole one fixed to a lower casing. The number of the commutator segments of a semicircular sector electric machine rotor using two pieces of coils whose winding core angles are approximately 90°and 120°, and a disc-shaped electric machine rotor is three. Many structures are available in guaranteeing eccentric mass of the electric machine rotor. In the disc-shaped electric machine rotor in particular, eccentrically weight-arranged blocks integrated with bearings are used. The shape codes of the eccentrically weight-arranged blocks are designated by 21, 25, 26, 27, 29, 31, or the like. COPYRIGHT: (C)2005,JPO&NCIPI
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