| 摘要 |
PURPOSE: A rotor of a vibration motor is provided to easily couple a weight to a rotor yoke by forming the weight by copper or iron material. CONSTITUTION: A rotor of a vibration motor includes a rotor yoke(110), a metal bearing(140), a weight(130), and a magnet(120). The rotor yoke has a disk shape. A shaft coupling part(150) is formed to the center of the rotor yoke. A fixing shaft penetrates the shaft coupling part. The metal bearing is inserted to the shaft coupling part. The weight is coupled to a top surface or a bottom surface of the rotor yoke. The magnet is arranged to a bottom surface of the rotor yoke. At least one or more stoppers are formed to a top end or a bottom end of the shaft coupling part in order to prevent separation of the metal bearing.
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