To provide a low vibration brushless motor by reducing axial vibration of a motor.
The brushless motor comprises a bearing boss part having inner circumference secured with a bearing, a shaft held rotatably by the bearing, a thrust receiving material sliding on the end face of the shaft, a permanent magnet attracting the end face of the shaft in the thrust direction while clamping the thrust receiving material, and a bottom receiving part for supporting the permanent magnet wherein the bearing boss part, the bearing, the shaft and the bottom receiving part are composed of a magnetic material and a closed magnetic path of the permanent magnet-the bottom receiving part-the bearing boss part-the bearing-the shaft is formed to clamp the thrust receiving material.
MASUDA KUMIO
Tomoyasu Sakaguchi
Hiroki Naito