ECCENTRIC ROTOR WITH BEARING, METHOD FOR MANUFACTURING ECCENTRIC ROTOR, AND AXIAL GAP BRUSHLESS VIBRATING MOTOR WITH ECCENTRIC ROTOR

摘要

PROBLEM TO BE SOLVED: To prevent an oil diffusion loss in an axial gap eccentric rotor simply constituted and having a bearing without impairing a size, strength, and the quantity of a vibration.;SOLUTION: An axial gap brushless vibrating motor is provided with an axial gap magnet 8 having a plurality of magnetic poles, a yoke board 6 on which the magnet is fixed, and an eccentric weight 9 having a relative density of 15 or more and disposed outside the magnet. An oiled bearing 7 is provided on the inner side of the magnet on the yoke board. An oil barrier process B is applied to at least the radial circumference of a bearing hole so as to prevent the oil of the bearing from being diffused and flowing out.;COPYRIGHT: (C)2005,JPO&NCIPI