Patent ID: 9051678
Filing Date: 2015-06-09
Classification: D06F

Abstract:
1. A laundry machine comprising: a cabinet; a tub provided in the cabinet; a drum rotatably provided in the tub; a rotary shaft connected to the drum; a motor coupled to the rotary shaft; a bearing housing to rotatably support the rotary shaft; a tub back wall connected to the bearing housing; a vibration transmission blocking member provided between the tub back wall and the tub; a suspension unit connected to the bearing housing; and ball balancers, each of which includes a race, balls contained in the race, and an oil filing the race, provided on the drum, wherein the balls have a size greater than a size determined by capacity of the ball balancers=a volume of ball x a specific gravity of ball x the number of ball, whereby an irregular vibration caused by connecting the suspension unit to the bearing housing is prevented.