Patent ID: 9145633
Filing Date: 2015-09-29
Classification: D06F

Abstract:
1. A pulsator-type automatic washing machine, comprising a housing, a control panel seat, a pedestal, an outer tub, an inner tub and a motor, the control panel seat being mounted on the top of the housing, and the pedestal being mounted at the bottom of the housing, and the outer tub and the inner tub being mounted inside the housing, wherein, the motor is a direct driving motor, and the motor and a bearing block are mounted at the bottom of the outer tub, and the motor is fixed on the outer tub by a fixing device, a motor shaft is coupled with a pulsator shaft inside the bearing block, and a buoyancy clutch device, the buoyancy clutch device comprising: a buoyancy chamber at a bottom of the inner tub, a concave gear arranged around a shaft hole at the bottom of the inner tub; and a convex gear arranged on the pulsator shaft between the outer tub and the inner tube; a balance ring arranged on a top of the inner tub; a cover of the outer tub arranged on the outer tub; a blocking structure arranged on the top of the inner tub and the top of the outer tub, the blocking structure including a first bulge arranged on a surface of the balance ring and a second bulge arranged on a surface of the cover of the outer tub facing to the balance ring, the bulges being bar-shaped or block-shaped, and uniformly distributed on the surface of the balance ring and on the surface of the cover; the first bulge on the balance ring and the second bulge on the cover of the outer tub being configured to obstruct each other for preventing the inner tub from rotating synchronously with the pulsator after the inner tub floats up.