| 摘要 |
PURPOSE: A flat vibration motor is provided to prevent damage or distortion of products by simply assembling a weight and a coil stacking member having a coil pattern on an upper substrate. CONSTITUTION: A lower substrate(2) and a magnet(3) are attached on an upper surface of a bracket(1) of a circular plate. An upper part of the bracket(1) is covered by a case(4) of a cap shape that is downwardly opened. The bracket(1) and the case(4) are connected with each other by a shaft(5). A rotor assembly(6) is rotatably provided on the shaft(5). An insulating material that is integrally injection-molded on an upper substrate(9) is omitted. The upper substrate(9) and a weight(10) are integrally supported on the shaft(5). A coil stacking member(20) having a coil pattern is provided on the upper substrate(9), thereby forming the rotor assembly(6) in a simple manner. Accordingly, the coupled structure of the rotor assembly(6) that is provided as a rotating unit in a flat vibration motor is improved, resulting in enhancement of product quality.
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