Patent ID: 8736121
Filing Date: 2014-05-27
Classification: B06B,H02K

Abstract:
1. A linear vibrator, comprising: a case having an inner space and a lower portion opened downwardly; a bracket coupled the case for sealing the inner space; a magnet coupled and fixed to at least one surface of the case and the bracket; a coil having an inner diameter larger than an outer diameter of the magnet to form a gap between an inner surface of the coil and an outer surface of the magnet, the coil moving up and down with a mass body; an elastic member having one end coupled to the case and the other end being vibrated up and down; a holder coupled to the other end of the elastic member and being vibrated up and down; and a substrate having one end coupled to the bracket and the other end being vibrated up and down together when the mass body and the coil are vibrated up and down, the substrate extending from the end coupled to the bracket and having a curved portion disposed outside of the magnet for transferring electrical signals to the coil, the substrate including an electrode pad formed on a bottom surface thereof configured to be electrically connected to one end of a lead wire of the coil, wherein the substrate includes a moving piece coupled to the mass body and vibrated by interworking with the coil and the mass body, and a fixing piece protruded to the outside of the case and coupled to the case, and the electrode pad is formed on a bottom surface of the moving piece.