Linear vibration motor

摘要

Disclosed herein is a linear vibration motor including: a stator part including a coil, a printed circuit board coupled to the coil, a bracket having the printed circuit board fixedly coupled thereto, and a case having an internal space formed therein and coupled to the bracket; and a vibrator part including a main magnet positioned to face the coil, a yoke coupled to the magnet, a weight body coupled to an outer peripheral surface of the yoke, and an elastic member having one end coupled to the case and the other end coupled to the yoke, wherein the stator part further includes sub-magnets, which are magnetic damping units, the sub-magnets being disposed to face the main magnet of the vibrator part and being mounted in the stator part so that surfaces thereof facing the main magnet have the same polarities as those of the main magnet.

主权项

1. A linear vibration motor comprising:
a stator part having an internal space, with a main magnet mounted to the stator; a vibrator part comprising a coil disposed at a position facing the magnet and a printed circuit board, the vibrator being received in the internal space of the stator part; and an elastic member connecting the stator to the vibrator; wherein the stator part and the vibrator part each further include sub-magnets that are magnetic damping units, the sub-magnets being disposed so that the same polarities face each other, wherein the stator part includes a bracket, and a case has an internal space formed therein and coupled to the bracket, and wherein the sub-magnets include:
a plurality of first sub-magnets mounted on an upper surface of the bracket and mounted on an inner side of the case or the elastic member; anda plurality of second sub-magnets each mounted on upper and lower surfaces of the weight body so as to face the plurality of first sub-magnets.