公开(公告)号：US20240133107A1

公开(公告)日：2024-04-25

申请号：US18242883

申请日：2023-09-05

Applicant: LG Electronics Inc.

Inventor： Joohang KANG ,  Youngchan AHN ,  Junggu LEE

IPC: D06F37/36 ,  D06F37/26 ,  F16H3/44

CPC classification number: D06F37/36 ,  D06F37/262 ,  F16H3/44 ,  F16H2003/442 ,  F16H2057/085

Abstract: A drum washing machine includes an inner tub and a drive system coupled to the inner tub. The drive system includes a housing, a motor disposed on one side of the housing, a rotor shaft coupled to the motor and bearing-coupled to the housing, an output shaft bearing-coupled to the housing, and wherein at least part of the output shaft is disposed in the rotor shaft, a planetary gear set that a part of the planetary gear set is spline-coupled to the rotor shaft, and other part of the planetary gear set is spline-coupled to the output shaft, and an actuator moving the planetary gear set in a horizontal direction, wherein, the housing is integrally formed with the inner tub.

公开(公告)号：US20240133106A1

公开(公告)日：2024-04-25

申请号：US18242881

申请日：2023-09-05

Applicant: LG Electronics Inc.

Inventor： Joohang KANG ,  Youngchan AHN ,  Junggu LEE

IPC: D06F37/36 ,  F16H3/44

CPC classification number: D06F37/36 ,  F16H3/44 ,  F16H2200/2007 ,  F16H2200/2051

Abstract: A drive system of a washing machine includes a housing, a motor, a rotor shaft coupled to the motor and the housing, an output shaft having a part within the rotor shaft and coupled to the housing, a planetary gear set coupled to the rotor shaft and the output shaft, and an actuator configured to move the planetary gear set in a vertical direction. When the planetary gear set is moved to one side, a part of the planetary gear set is coupled to the rotor shaft to transmit a rotational force of the rotor shaft to the output shaft at a ratio of 1:1. When the planetary gear set is moved to other side, another part of the planetary gear set is coupled to the housing to reduce the rotational force of the rotor shaft at a gear ratio of n:1 and transmit it to the output shaft.

公开(公告)号：US20240133105A1

公开(公告)日：2024-04-25

申请号：US18243875

申请日：2023-09-07

Applicant: LG Electronics Inc.

Inventor： Joohang KANG ,  Youngchan AHN ,  Junggu LEE ,  Yongsik PARK

IPC: D06F37/30 ,  D06F18/00 ,  F16H3/78

CPC classification number: D06F37/304 ,  D06F18/00 ,  F16H3/78

Abstract: A drive system of a washing machine includes a rotor shaft and an output shaft; an n:1 stage positioned on the rotor shaft; a 1:1 stage positioned behind the n:1 stage, coupled to the rotor shaft and integrally rotating with the rotor shaft; a planetary gear set including a ring gear shaft surrounding a part of a circumference of the rotor shaft, and transmitting a rotational force of the rotor shaft to the output shaft at a ratio of 1:1 or by reducing at a gear ratio of n:1; a dynamic clutch coupled to the ring gear shaft between the n:1 stage and the 1:1 stage, moving in an axial direction on the ring gear shaft, and integrally rotating with the ring gear shaft; and a clutch driving portion for moving the dynamic clutch in the axial direction.

公开(公告)号：US20210262563A1

公开(公告)日：2021-08-26

申请号：US16901661

申请日：2020-06-15

Applicant: LG ELECTRONICS INC.

Inventor： CHANGWOO SUNG ,  Deokkyu LEE ,  Junggu LEE

IPC: F16H57/04 ,  F16H57/021 ,  F16H1/32

Abstract: A gear system is disclosed. The gear system has a structure in which oil churned by a gear is dispensed to at least one of a hollow space or a bearing, thereby effectively lubricating components. For example, the gear system includes a first shaft comprising a hollow space, a first gear arranged at an outer circumference of the first shaft, a second gear externally engaged with the first gear, a bearing arranged at the outer circumference of the first shaft, a housing surrounding the first gear and the second gear, and an oil guide plate disposed between the first shaft and the housing to dispense oil churned by the second gear to the hollow space of the first shaft and the bearing coupled to the first shaft.

公开(公告)号：US20170292517A1

公开(公告)日：2017-10-12

申请号：US15363287

申请日：2016-11-29

Applicant: LG ELECTRONICS INC.

Inventor： Junggu LEE ,  Taekyoung KIM ,  Yicheol CHOI ,  Joohyung KIM ,  Ilyoung PARK ,  Bumsuk KIM ,  Junyoung LIM

IPC: F04C29/04 ,  F04C29/00 ,  F04C29/12 ,  F04C18/02

CPC classification number: F04C29/047 ,  F04C18/0215 ,  F04C27/005 ,  F04C29/0085 ,  F04C29/028 ,  F04C29/12 ,  F04C2240/30 ,  F04C2240/40 ,  F04C2240/50 ,  F04C2240/60 ,  F04C2240/807 ,  F04C2240/808

Abstract: A motor-operated compressor includes a casing having an inner space in which a driving motor, an orbiting scroll and a fixed scroll are accommodated, and a controller provided outside the casing. The casing includes an intake hole formed at a side adjacent to the controller and an exhaust hole formed at a side adjacent to the fixed scroll on the basis of the driving motor. The casing includes a communication passage formed between the casing and a stator of the driving motor, such that a refrigerant introduced into the inner space through the intake hole is introduced into the suction chamber through the driving motor. A back pressure space supporting the orbiting scroll is sealed by oil. The stator has teeth on its inner circumferential surface and protrusions on its outer circumferential surface, each protrusion being located within a width range of each tooth.