Patent ID: 8616028
Filing Date: 2013-12-31
Classification: D06F,H02K,Y02B

Abstract:
1. A driving device for a full automatic washing machine having an inner tub and a pulsator rotatably combined in the inner tub, the driving device comprising: a brushless direct-current (BLDC) motor that produces a rotational force that rotates the pulsator and the inner tub, the BLDC motor includes a double-rotor having inner and outer rotors, a number of N-pole and S-pole magnets arranged on the outer circumference of an inner yoke and the inner circumference of an outer yoke, opposing magnets being arranged to have a reverse polarity; and an integral type stator having an annular contour and installed with a mutual gap between the inner and outer rotors, the stator including: a first wash axle fixedly combined with a rotor support frame that is extended from the double rotor of the BLDC motor so as to rotate; a second wash axle having one side is linked with the pulsator, and through the other side receiving the rotational force from the first wash axle, to make the pulsator rotate in a forward/reverse direction; a first dehydration axle coaxially combined on the outer circumference of the first wash axle, and affixed to the rotor support frame so as to rotate; a second dehydration axle having one side is connected with the inner tub, and through the other side receiving the rotational force from the first dehydration axle, to make the inner tub rotate; a gear unit transferring the rotational force between the first dehydration axle and the second dehydration axle and between the first wash axle and the second wash axle; and a clutch unit controlling rotation of the first dehydration axle at a wash stroke to thus make the rotational force generated from the BLDC motor transferred from the first wash axle to the second wash axle so as to make the pulsator rotate, and making the first dehydration axle rotatable at a dehydration stroke to thereby make the rotational force generated from the BLDC motor transferred to the second wash axle and the second dehydration axle through the gear unit, to thereby make the pulsator and the inner tub rotate simultaneously.