公开(公告)号：US20230383860A1

公开(公告)日：2023-11-30

申请号：US18202484

申请日：2023-05-26

Applicant: LG Electronics Inc.

Inventor： Joohang KANG ,  Youngchan AHN

IPC: F16K31/04

CPC classification number: F16K31/042

Abstract: A valve actuator includes: a motor and a gear assembly transmitting a driving force of the motor to a ball valve. The gear assembly includes: an input gear coupled to a rotational shaft of the motor and rotating with the rotational shaft, an output gear spaced apart from the input gear, coupled to a stem of the ball valve, and transmitting a rotational force of the input gear to the stem, and a power transmission gear transmitting the rotational force of the input gear to the output gear and including a first gear set disposed between the input gear and the output gear. The first gear set includes a clutch shaft moving in a vertical direction, and a first gear and a second gear that are coupled to the clutch shaft and, based on vertical movement of the clutch shaft, disengage from or couple to each other.

公开(公告)号：US20220131439A1

公开(公告)日：2022-04-28

申请号：US17390329

申请日：2021-07-30

Applicant: LG Electronics Inc.

Inventor： Joohang KANG ,  Junggu LEE ,  Yongdae KIM ,  Jin HONG

IPC: H02K5/24 ,  H02K7/08 ,  H02K9/06

Abstract: An electric motor assembly includes a housing, an impeller disposed inside the housing, a stator disposed at one side of the impeller in an axial direction of the impeller, the stator comprising a plurality of coil parts, a rotor that includes a rotation shaft connected to the impeller and that is configured to rotate relative to the stator, a bracket that is coupled to the housing and supports the rotation shaft, and a connection ring that electrically connects together end portions of the plurality of coil parts.

公开(公告)号：US20210203211A1

公开(公告)日：2021-07-01

申请号：US16846212

申请日：2020-04-10

Applicant: LG ELECTRONICS INC.

Inventor： Joohang KANG ,  Yoonuk KIM ,  Junggu LEE

IPC: H02K11/22 ,  H02K5/24 ,  H02K21/14 ,  B60K1/04

Abstract: A motor may include a shield member that screens a magnetic field between a stator and a rotor, and a moving member that controls a position of the shield member in response to an electromagnetic interaction with the stator such that the screening of the magnetic field is configured to be selectively performed. The motor may prevent a generation of a counter electromotive force or regenerative braking.

公开(公告)号：US20240229326A9

公开(公告)日：2024-07-11

申请号：US18243875

申请日：2023-09-08

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：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：US20230067855A1

公开(公告)日：2023-03-02

申请号：US17870337

申请日：2022-07-21

Applicant: LG ELECTRONICS INC.

Inventor： Joohang KANG ,  Youngchan AHN

IPC: F16K1/14 ,  F16K31/04 ,  F16K31/53

Abstract: A valve actuator includes a motor and a gear assembly including an input gear rotated by driving force of the motor, an output gear receiving rotational force of the input gear, and at least one power transmission gear transmitting the rotational force of the input gear to the output gear. The valve actuator further includes a valve output shaft coupled to the output gear and actuated to close a path of a valve, and a selective power transmitter interrupting rotation of the output gear after the output gear is rotated at a predetermined angle by the rotational force of the input gear. After the valve is actuated to close the path, the driving force of the motor is not transmitted to the valve output shaft.

公开(公告)号：US20230057656A1

公开(公告)日：2023-02-23

申请号：US17570130

申请日：2022-01-06

Applicant: LG ELECTRONICS INC.

Inventor： Joohang KANG ,  Youngchan AHN ,  Hyeonho HA

IPC: F16K5/06 ,  F16K31/04 ,  F16K31/524

Abstract: A valve actuator includes: a housing, a motor that is disposed in the housing and that includes a motor shaft, a drive gear coupled to the motor shaft, a transfer gear that engages with the drive gear and that is configured to, based on the drive gear rotating, be rotated according to a predetermined gear ratio, an output shaft disposed in the housing, an output gear that is coupled to the output shaft and that engages with the transfer gear, and a stopper that is disposed in the housing and that is configured to control a rotation radius of the output gear. The transfer gear comprises an inner part, an outer part disposed at an outside of the inner part, a first magnet disposed at the outer part, and a second magnet that is disposed at the inner part and that faces the first magnet.

公开(公告)号：US20230053986A1

公开(公告)日：2023-02-23

申请号：US17872710

申请日：2022-07-25

Applicant: LG ELECTRONICS INC.

Inventor： Joohang KANG ,  Youngchan AHN ,  Deokkyu LEE

IPC: F16K31/524 ,  F16K31/04

Abstract: A valve actuator includes a motor and a gear assembly including an input gear rotated by driving force of the motor, an output gear receiving rotational force of the input gear, and at least one power transmission gear transmitting the rotational force of the input gear to the output gear. The valve actuator further includes a valve output shaft actuated to close a path of a valve, and a selective power transmitter selectively transmitting the rotational force of the output gear to the valve output shaft. The selective power transmitter includes a cam portion provided in at least one of the output gear and the valve output shaft. Accordingly, after the valve is actuated to close the path, the driving force of the motor is not transmitted to the valve output shaft.