公开(公告)号：US20210131015A1

公开(公告)日：2021-05-06

申请号：US17091954

申请日：2020-11-06

Applicant: LG Electronics Inc.

Inventor： Jeonguk LEE ,  Manho CHUN ,  Sechang KIM ,  Joonho PYO

IPC: D06F37/40 ,  D06F35/00 ,  D06F13/02

Abstract: A washing machine includes a water tank, a washing tub, a pulsator, a drive motor, a drive shaft, a dewatering shaft that rotates about the same axis of the drive shaft and spins the washing tub, a coupler that is mounted to move up and down along the dewatering shaft and transmits the torque of the drive motor to the dewatering shaft, a solenoid module that moves the coupler upward in a lengthwise direction of the dewatering shaft so as to cut off torque from the drive motor to the dewatering shaft or transmit the torque to the dewatering shaft, when a magnetic field is generated by applying an electric current to a coil, and a coupler guide that rotates itself or fixes the position of the coupler, by coming into contact with the coupler when the coupler moves upward in the lengthwise direction of the dewatering shaft.

公开(公告)号：US20210131013A1

公开(公告)日：2021-05-06

申请号：US17091711

申请日：2020-11-06

Applicant: LG Electronics Inc.

Inventor： Jeonguk LEE ,  Manho CHUN ,  Sechang KIM ,  Joonho PYO ,  Taehyeon SIM

IPC: D06F37/40 ,  D06F37/30 ,  D06F37/24

Abstract: A washing machine and a control method therefor are provided. The washing machine includes a water tank, a washing tub, a pulsator, a drive motor, a coupling flange connected to the drive motor, a drive shaft that rotates the pulsator, a dewatering shaft that rotates the washing tub, a coupler configured to move up and down along the dewatering shaft and to be placed in a first position where the coupler engages the coupling flange and in a second position where the coupler is placed above the coupling flange, a solenoid module that moves the coupler, a coupler guide configured to be rotated by the coupler and fix the coupler in the second position, and a controller configured to control the solenoid module to move the coupler.

公开(公告)号：US20200224354A1

公开(公告)日：2020-07-16

申请号：US16743348

申请日：2020-01-15

Applicant: LG ELECTRONICS INC.

Inventor： Jeonguk LEE ,  Jihyun YOON ,  Sechang KIM

IPC: D06F37/30 ,  D06F37/40 ,  D06F23/02 ,  D06F33/36 ,  D06F33/40 ,  F16D11/14 ,  D06F105/46

Abstract: A washing machine of the present disclosure includes a drive shaft rotating a pulsator, a dehydration shaft connected to a washing tub, a magnetic core surround a periphery of a solenoid, an armature lifted by an attraction force between the armature and the magnetic corea lever having a support point of which a position is fixed with respect to the dehydration shaft and an operation end located at a point spaced by a predetermined distance from the support point, a clutching coupler shaft-coupling the drive shaft and the dehydration shaft to each other at a lowered position, and shaft-decoupling the drive shaft and the dehydration shaft from each other at a lifted position, an elastic member pressing the clutching coupler downward, a guide groove guiding a relative movement of the operating end with respect to the clutching coupler, and a lowering restriction section disposed in the guide groove.