公开(公告)号：US11578450B2

公开(公告)日：2023-02-14

申请号：US16946115

申请日：2020-06-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Takahiro Nakashima ,  Yoshiyuki Nishioka ,  Yuichi Suzuki ,  Kazushi Mori ,  Hiroshi Shimbo

IPC: D06F37/22 ,  D06F33/48 ,  F16F7/08 ,  F16F7/09 ,  D06F103/46 ,  D06F105/46

Abstract: A washing machine includes a water tub arranged in a case and a damper installed between the case and the water tub for damping vibrations of the water tub. The damper includes a plunger having one end supported on the case; a rod having one end supported on the water tub and the other end movably inserted to the plunger; a housing arranged to wrap around some of the plunger and the rod and including a friction member arranged between the housing and the plunger to contact an outer circumferential surface of the plunger; and a switching device configured to be in a first state in which the rod is coupled to the housing and able to move within the plunger along with the housing and a second state in which the rod is decoupled from the housing and able to move solely within the plunger.