Patent ID: 6593675
Filing Date: 2003-07-15
Classification: H02K

Abstract:
A vibration motor comprising:a cover plate for fixedly receiving the lower end of a shaft in a central part; a housing coupled with said cover plate to define a predetermined size of space and having a recess in an upper inner central part; a lower board attached to the upper surface of said cover plate and having brushes projected at one end; magnets attached to the upper surface of said cover plate; an upper board rotationally supported while being eccentric by said shaft and having commutators made of a number of segments in the bottom for electric connection with said brushes; a plurality of winding coils distanced from each other at an angle in the upper surface of said upper board; an insulator made of a resin for fixing said plurality of winding coils to said upper board; and support means made of an elastic material, said support means being attached while covering said recess of the housing, said support means having incisions for being spread toward said recess to center said shaft when the upper end of said shaft is press fitted into a central part of said incisions, said support means being interposed between said housing and said shaft to absorb impact generated in the operation of the motor.