| 摘要 |
PROBLEM TO BE SOLVED: To generate proper vibration by simple structure by devising a bearing part without needing an external eccentric weight or the eccentric mechanism of a rotor itself. SOLUTION: In a motor in which radially projecting pole type rotors (R1 and R2) and field magnets (7 and 77) are housed in a housing (H) to make the magnets face the circumferences of the rotors through a void, a bearing hole is made to be a long hole (A) in which the longitudinal direction is the magnetic pole direction so that the rotors can be radially moved within the range of the size of the void by the magnetic force of the magnets during the rotation of the rotors, the bearing hole is made to be a large hole (B) to make the shaft movable on the whole circumference, or the bearing hole (C) is made to be a slightly larger hole concentric with the shaft, and a space part (K) is formed on the periphery of the bearings (222a and 222b) to make the bearings radially movable within the range of the void.
|
