Samsung Electro-mechanics Co., Ltd.

An Soo Yoon

Hwa Young Oh

Kwang Hyung Lee

Jun Kun Choi

Joon Choi

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.

Linear vibration motor

Disclosed herein is a linear vibration motor. The motor includes a stator and a vibrator. The stator includes a magnet. The vibrator includes a coil facing the magnet. A weight is coupled to the coil. A PCB is connected to the coil and the stator. An elastic member is coupled to stator and the coil. A damper is provided on the weight at a position facing the elastic member. The damper may be provided between the elastic member and the weight or between the elastic member and the inner surface of a casing. The damper can mitigate metallic high frequency noise attributable to friction between the elastic member and the weight or between the elastic member and the casing. Furthermore, the spatial utilization is increased, thereby enhancing the degree of freedom in designing the linear vibration motor.

Disclosed herein is a linear vibration motor including: a fixing part including a magnet; and a vibrator part including a coil corresponding to the magnet and a printed circuit board coupled with the coil, wherein one end of the printed circuit board is coupled with the fixing part and the other end thereof is coupled with the coil.

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Gyunggi-do, South Korea

An Soo Yoon