Patent ID: 6836039
Filing Date: 2004-12-28
Classification: H02K

Abstract:
A brushless vibration motor comprising:a base plate unit having a buffing element extended from the base plate, and including a shaft having a first portion inserted into the burring element to be fixedly coupled to the base plate; a stator having one or more coils disposed on the base plate through which current flows; a rotor rotatably supported by a second portion of the shaft, and comprises, a bearing slidably inserted around the second portion of the shaft, a bearing holder having an inside surface forcibly coupled to the bearing, and a yoke coupled to the bearing holder and having a magnet mounted on the yoke to be spaced-apart from the coils to generate a rotation electromagnetic force with the coils, and a counterweight generating eccentricity; and a cover coupled to the base plate to enclose the stator and the rotor.