Dual rotor type motor

Abstract

A dual rotor type motor of the present invention is disclosed. The dual rotor type motor according to the present invention includes a shaft rotatably provided in a motor securing part; a rotor assembly rotated with a center thereof fastened to the shaft, the rotor assembly comprising an outer rotor spaced apart at a predetermined distance from the center of the shaft with magnets secured along a circumferential direction, and an inner rotor provided in an inside of the outer rotor at a predetermined distance spaced apart with magnets secured along a circumferential direction; and a stator comprising a core made of metal, an insulator of an insulating material for surrounding the core so as to have a first and second surface of the core facing each other to be exposed outside, a coil wound on the outer surface of the insulator, a molding part of insulating material for surrounding the insulator and the coil by insert molding as one body to expose the first and second surface of the core in a state of the insulator being provided in a circular shape and a fixing part for securing the molding part to the motor securing part, and the stator provided between the outer rotor and the inner rotor for having the exposed first and second surface of the core to face each other at a predetermined distance with the magnet of the outer and inner rotor.

Description

technical field [0001] The present invention relates to a motor, and more particularly, to a dual-rotor type brushless direct current (hereinafter referred to as BLDC) motor which improves torque by doubly installing rotors in both sides of a stator of an appliance such as a washing machine . Background technique [0002] Generally, according to the washing method of the drum type, detergent, washing water, and laundry are put in, and after receiving a driving force of a motor, washing is performed using frictional power between a rotating drum and the laundry. Therefore, the washing method of the drum type not only has improved washing efficiency but also has little damage and entanglement of clothes. [0003] Conventional drum type washing machines are classified into indirect drive type and direct drive type according to the driving method of their motor, wherein, in the indirect drive type, the driving force of the motor is indirectly transmitted to the drum through a b...

AI Technical Summary

Problems solved by technology

Therefore, it may cause a problem that the size and weight of the motor should be increased

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