Double rotor type motor

Abstract

The present invention relates to motors, and more particularly, to a double rotor type motor applicable to a washing machine or the like. The double rotor type motor includes an outer rotor (10) having a first base (14), and a first extension (15) extended from a circumference of the first base (14) substantially perpendicular thereto, the first extension (15) having outer magnets (11) mounted on an inside circumferential surface, an inner rotor (20) having a second base (24) mounted on an upper surface of the first base (14) concentric to the first base (14), and a second extension (25) extended from a circumference of the second base (24) so as to be opposite to the first extension (15) with a predetermined gap toward an inner side of the first extension (15), the second extension (25) having inner magnets (21) mounted on an outside circumferential surface, and a bushing (40) at a center of the first base (14) and the second base (24), for transmission of rotation force both from the outer rotor (10) and the inner rotor (20) to a rotating shaft (4).

Description

technical field [0001] The present invention relates to motors, and more particularly, to a dual-rotor type motor suitable for use in washing machines and the like. Background technique [0002] In general, a washing machine washes laundry by utilizing friction between wash water and laundry in a drum rotated by a motor while detergent, wash water, and laundry are introduced into the drum. The drum is a washing tub for holding washing water and clothes and is suitable for a washing machine regardless of whether the washing machine is a drum type or an agitator type. [0003] Meanwhile, according to the driving type of the washing machine, it is divided into an indirect coupling type and a direct coupling type, wherein, in the indirect coupling type, the driving power is indirectly transmitted from the motor to the drum through a belt wound around the motor pulley and the drum pulley, while in the In the direct coupling type, the motor is directly coupled to the drum to dire...

AI Technical Summary

Problems solved by technology

[0014] However, currently, in order to keep up with the increase in the capacity of the washing machine, although it also requires an increase in the output of the motor for rotating the drum, such increased output of the motor requires a large rotor and stator, thereby significantly increasing the size and weight of the motor.

[0015] Therefore, the increase in the size of the motor results in a significant increase in the size of the washing machine etc. to which this motor is applied.

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