Patent ID: 7692349

Claim:
A direct drive motor for a washing machine, comprising: a stator having a winding part with a coil wound thereon; a rotor frame including a sidewall part and a rear wall part, wherein the rotor frame is configured to be connected to a shaft so as to directly drive a drum coupled to the shaft; a permanent magnet positioned at an inner side of the sidewall part of the rotor frame, wherein the permanent magnet is made of a resin material; and a back yoke positioned between an inner circumferential surface of the sidewall part of the rotor frame and a corresponding outer circumferential surface of the permanent magnet, wherein the sidewall part of the rotor frame is made of a magnetic material so as to form a magnetic path and the back yoke is made of a non-magnetic material such that the permanent magnet is magnetized in a sine wave pattern circumferentially.