| 摘要 |
PROBLEM TO BE SOLVED: To provide the vibration motor which can improve vibration power with its manufacture facilitated. SOLUTION: In the vibration motor including a frame unit, a stator and a rotor 20 received in the inside of the frame unit, the stator includes two pole piece pairs 11 piled together so as to wind a coil, each of the pole piece pair includes an upper/lower pole piece unit 10a/10b, the center of the stator is formed with a space receiving the rotor 20, the rotor 20 includes a permanent magnet 26 and an eccentric weight 24 connected to the permanent magnet 26, and the two pole piece pairs 11 are respectively installed in both ends of the motor in a manner as mutually made symmetry. COPYRIGHT: (C)2008,JPO&INPIT
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