Motor for unmanned aerial vehicle and assembling method thereof

Abstract

The motor comprises a stator, a rotor and a stator support, the stator is installed on the outer wall of the stator support in an interference fit mode, the rotor is located on the periphery of the stator, and the stator comprises a first stator iron core, a winding insulation framework, a stator winding, a second stator iron core and a wedge-shaped key. The stator support comprises a stator support inner ring part and a stator support outer ring part which are integrally formed, the inner wall of the iron core ring body is in interference fit with the outer wall of the stator support inner ring part, and an inner ring part groove is formed in the upper end of the stator support inner ring part. The rotor support comprises a rotor ring part and a support disc part, the upper end of the rotor ring part is provided with magnetic steel grooves, the magnetic steel is circumferentially and evenly distributed in the magnetic steel grooves, and the rotating shaft and the support disc part areinstalled in an interference fit mode. The motor is simple and convenient to assemble, good in heat dissipation effect and good in sealing effect.

Description

technical field [0001] The invention relates to the technical field of motors, in particular to a motor used for drones and an assembly method thereof. Background technique [0002] At present, drones have been widely used, and the demand for motors of drones has increased dramatically. The general characteristic of the motor of the UAV is that the stator is inside and the rotor is outside. [0003] In the prior art, the stator core of the UAV motor is integrated, and the stator winding is stuffed in from the gap on each slot of the stator core. It is very troublesome to get off the wire, and the wire is very loose, and there must be a margin for the wire. Otherwise, it is difficult to put it in, the two ends of the stator winding protrude longer, the loss of the stator winding is large, and the power density is low. [0004] The rotor magnet of the UAV motor is pasted with an indexing plate, which requires precise positioning operations, and the heating of the motor will ...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the stator core of the UAV motor is integrated, and the stator winding is stuffed in from the gap on each slot of the stator core. It is very troublesome to get off the wire, and the wire is very loose, and there must be a margin for the wire. Otherwise, it is difficult to put it in, the two ends of the stator winding protrude longer, the loss of the stator winding is large, and the power density is low

[0004] The rotor magnet of the UAV motor is pasted with an indexing plate, which requires precise positioning operations, and the heating of the motor will make the pasted magnet unstable.

[0005] At present, the UAV motor is air-cooled by the airflow rotated by the blades. The heat dissipation effect is not good, which will shorten the service life of the bearing. At the same time, the increase in heat will also make the rotor magnet unstable, which needs to be improved.

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