BALL PRESSURE SENSOR FOR DETECTING UNBALANCE

摘要

PURPOSE: A ball pressure sensor uses a catching protrusion to prevent a ball from rotating to the same direction as that of the rotation of a dewatering bin to prevent misrecognizing vibration by the dewatering operation as an unbalance to improve the accuracy of the unbalance measurement. CONSTITUTION: A ball supporter(26) of a ball pressure sensor has a spiral sloping surface(27). A catching protrusion(28) is formed on the sloping surface(27) to prevent a ball(15) from rotating to the same direction as that of the rotation of a washing tank on dewatering operation. The sloping surface(27) comprises more than one area with different sloping angles.