Patent ID: 9742254
Date: 2017-08-22
CPC Classifications: G06F,H02K

Claim:
1. An apparatus for generating linear vibration with a damper, comprising: a housing having an inner space formed therein; a fixed body provided in the inner space and having a coil; a vibrating body having a magnet and a weight coaxially disposed with the coil and configured to move in a vertical direction on the basis of the fixed body; an elastic body configured to elastically support the vibrating body; a viscous fluid provided at an upper surface of the magnet and having viscosity; a damper installed in the housing to face an upper surface of the vibrating body and configured to make a surface contact with the viscous fluid when the vibrating body moves upwards, the damper having a shape not making a surface contact with the entire viscous fluid simultaneously, and the damper has a surface-contact part making a surface contact with the viscous fluid and one or more spaces not making a surface contact with the viscous fluid, which are simultaneously formed in a region corresponding to the viscous fluid.