BRUSHLESS DIRECT CURRENT MOTOR

摘要

A brushless direct current motor comprises a stator (5), a rotor (7), and a revolving shaft fixed at a center hole of the rotor (7). In each cross section of the stator (5), the mechanical eccentric angle between a line, connecting an intersection point of an addendum circle arc (511) of each stator tooth (51) and a gear shaft radius of the stator tooth (51) to a center (512) of the addendum circle arc (511) of stator tooth (51), and the gear shaft radius of the stator tooth (51) is larger than 0 degree and smaller than 90 degrees. The addendum circle shape of the stator tooth (51) is designed as an arc that is eccentric relative to the center of rotation of the rotor, so that the brushless direct current motor is capable of eliminating a start "dead point", and is started smoothly.