a564f647_Bang__KR___Patent_applications__Description
[Patent application number] 20140062224 [Published] 03-06-2014 [Description] 
VIBRATION GENERATING DEVICE - There is provided a vibration generating device, including: a housing including an inner space; a shaft provided in the inner space of the housing in an axial direction; a frame including a shaft hole into which the shaft is fitted; a bearing member mounted on the frame to be vibrated in a state of contact with the shaft; a vibrating part mounted on an outer surface of the frame and including a magnetic field generation part; elastic members mounted on both ends of the vibrating part in the axial direction; and a coil provided in the inner space and vibrating the vibrating part by interaction with the magnetic field generation part.
Bang, KR - Patent applications