Patent ID: 7171715
Filing Date: 2007-02-06
Classification: D06F

Abstract:
1. A method for controlling a full automatic washing machine including a BLDC motor, a driving source of the washing machine, having a rotor coupled to a washing shaft and a stator surrounding the rotor in an outer side thereof, a clutch motor for moving a coupling up or down to a washing or spinning position, and the coupling for moving up or down in association with a movement of the clutch motor to transmit a power to the washing shaft only in washing, and to the washing shaft and a spinning shaft fitted on an outer side thereof on the same time in spinning, the method comprising the step of: alternating a direction of rotation of the BLDC motor for releasing seizure of the coupling before a step for moving the coupling up to a washing mode position is carried out by turning on the clutch motor after water supply is finished for washing, whereby preventing seizure of moving up of the coupling caused by serrations in an inside circumferential surface of the coupling receiving opposite facial pressures from the serration in a lower part of the spinning shaft and the serration in the upper part of an inner connector, coming from setting of the spinning shaft and the inner connector engaged with the coupling in opposite directions in a seized state in a previous stop.