MOTOR MAGNETIC COMPONENT STRUCTURE AND FAN MOTOR DEVICE THEREOF

摘要

A rotor magnetic component structure and a fan motor device thereof. The fan motor device includes a stator having a radial magnetic face and a sensor member disposed under the stator. The rotor magnetic component structure includes a main body composed of multiple N poles and multiple S poles, which are alternately arranged. A magnetic force border line is formed between each N pole and each S pole. The magnetic force border line includes a first vertical section corresponding to the radial magnetic face of the stator and an inclined section obliquely extending from a lower end of the first vertical section corresponding to the sensor member. The rotor magnetic component structure is able to reduce the vibration caused in the commutation of the magnetic poles and the sensor member can find the best commutation point.

主权项

1. A rotor magnetic component structure comprising a main body having a plurality of N poles and a plurality of S poles, which are alternately arranged, a magnetic force border line being formed between each N pole and each S pole, the magnetic force border line including a first vertical section and an inclined section obliquely extending from a lower end of the first vertical section.