DOUBLE STATOR AND CORESS-TYPE BLDC MOTOR

摘要

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a coreless brushless DC (hereinafter referred to as a coreless brushless DC) motor, and in particular, by arranging a stator coil in the upper and lower parts of the rotor in a symmetrical structure. The advantages of the coreless type are related to the coreless BLDC motor of the double stator type which can suppress the axial vibration of the rotor by maximizing and eliminating the disadvantages and realize high torque and low power consumption.;The coreless BLDC motor of the present invention includes a disk-type rotor in which a plurality of magnets are equally disposed in the vertical direction, a rotating shaft coupled through a bushing at the center of the rotor, and an upper / lower case rotatably supporting the rotating shaft. And an upper / lower stator having a plurality of bobbinless stator coils respectively installed on the inner circumference of the upper / lower case to apply electromagnetic force in opposite directions to the rotor.;As described above, in the present invention, since a magnetic circuit having a symmetrical structure is formed around the rotor, a high-efficiency motor with less axial vibration, high torque, and low power consumption can be provided.