Patent ID: 7679258

Claim:
A vibration motor, comprising: a housing; a stator received in the housing, comprising two claw-pole assemblies arranged back-to-back and a shaft being fixedly connected with the two claw-pole assemblies; and a rotor being rotatably disposed in the stator, the rotor comprising a bearing being rotatably mounted around the shaft, a permanent magnet mounted around the bearing, and an eccentric weight being fixedly attached to the permanent magnet, the eccentric weight comprising a main body and at least one inserting portion having a density higher than that of the main body; and wherein each claw-pole assembly comprises inner and outer yokes facing towards each other, a plurality of pole teeth extending from each of the yokes of each claw-pole assembly and being intermeshed with those of the other yoke, each outer yoke comprising a mounting portion concaved from a middle portion of each outer yoke towards the other outer yoke, the mounting portion defining a through hole with one end of the shaft being fixedly received therein and a plurality of mounting holes for resin being inserted therethrough to fill gaps between each two neighboring pole teeth.