Patent ID: 9525326
Filing Date: 2016-12-20
CPC Classification: H02K

Claim Text:
1. A brush-less motor, comprising a stator, a rotor, a plurality of field-effect transistors, a commutation circuit board, a control circuit board and a motor end cap; the stator and the rotor are disposed in the motor end cap; the plurality of field-effect transistors is connected to the motor end cap; the commutation circuit board and the control circuit board are both connected to the motor end cap, characterized in that, the motor end cap comprises a front end cap and a rear end cap; the motor front end cap and the motor rear end cap are mutually fixedly connected to form an integrated brush-less motor; the center of the brush-less motor is provided with a motor mandrel, and the brush-less motor is connected to a gearbox assembly through the motor mandrel; one side of the motor mandrel close to the motor rear end cap is connected with a motor fan; the brush-less motor is internally formed with a dissipating air path, and the field-effect transistors are disposed on the dissipating air path; the dissipating air path includes an air inlet and air outlet, and the field-effect transistors are disposed on the side of the air inlet; and the air inlet comprises an upper air inlet, a lower air inlet, left and right air inlets disposed on the motor front end cap, and the air outlet comprises left and right air outlets disposed on the two sides of the motor rear end cap.