ECCENTRIC ROTOR AND VIBRATION MOTOR HAVING THE ROTOR

摘要

An eccentric rotor and a vibration motor having the same are provided to improve vibration performance and to reduce volume. In an eccentric rotor(33) and a vibration motor having the same. An insertion hole is formed on a substrate(331). A pattern coil layer is formed on an upper plane of the substrate, and has a number of stacked layers and comprises a plurality of coil patterns(332). A commutator(333) is formed on a bottom plane of the substrate, and is connected to the pattern coil electrically, and is formed in integer times of the pattern coil.