公开(公告)号：US11225744B2

公开(公告)日：2022-01-18

申请号：US16668694

申请日：2019-10-30

Applicant: LG ELECTRONICS INC.

Inventor： Dongcheol Kim ,  Youngjong Kim ,  Hyunyong Jeong

IPC: D06F37/20 ,  D06F33/48 ,  D06F37/24 ,  D06F33/00 ,  D06F105/48

Abstract: A laundry treatment machine may include: a tub; a drum that is rotatably disposed in the tub; an actuator that provides power for rotating the drum; and a balancer device that is disposed at an end where the inlet hole of the drum is formed, and adjusts the center of gravity of the drum that is rotating. The balancer device may include: a main balancer that reduces vibration of the drum by moving in the opposite direction to eccentricity that is generated when the drum is rotated; a first sub-balancer of which an arrangement gap from the main balancer is adjusted in accordance with the degree of eccentricity of the drum; and a second sub-balancer of which an arrangement gap from the main balancer is adjusted in the opposite direction of the first sub-balancer with respect to the main balancer.