公开(公告)号：US11056950B2

公开(公告)日：2021-07-06

申请号：US16512471

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Taeyong Jung ,  Youngil Park ,  Haerim Yang ,  Hyeonho Ha

IPC: H02K9/19 ,  H02K1/32 ,  H02K11/21 ,  H02K7/00

Abstract: A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.

公开(公告)号：US12115859B2

公开(公告)日：2024-10-15

申请号：US17092988

申请日：2020-11-09

Applicant: LG ELECTRONICS INC.

Inventor： Haerim Yang ,  Seung-Suk Oh ,  Yeongjae Kim

IPC: B60K7/00 ,  B60K17/04 ,  F16C3/02 ,  H02K7/00 ,  H02K7/08 ,  H02K7/116

CPC classification number: B60K7/0007 ,  B60K17/046 ,  F16C3/02 ,  H02K7/003 ,  H02K7/006 ,  H02K7/088 ,  H02K7/116 ,  B60K2007/0038 ,  B60K2007/0092 ,  F16C2326/20

Abstract: According to an embodiment of the present disclosure, provided is a high-output, high-torque in-wheel motor having a power line-taken-out structure. According to an embodiment of the present disclosure, the in-wheel motor includes a circular rim; a shaft connected to the rim through a center of the rim; a motor assembly including a stator connected to the shaft in the rim and a rotor surrounding the stator and rotated about the stator; a cover coupled to an opening of the rim to block the motor assembly from an outside of the rim; and a bearing contacting and configured to support the shaft. The shaft includes a first shaft body passing through a center of each of the rim and the cover and extending outward; and a second shaft body having a larger diameter than a diameter of the first shaft body and disposed between the stator and the bearing. A power line for supplying power to the motor assembly is inserted in a radial direction of the second shaft body between the stator and the bearing and is taken out in a longitudinal direction of the second shaft body. According to an embodiment of the present disclosure, even when a diameter of the power line is increased to achieve the high-output, high torque performance of the in-wheel motor, structural rigidity of the shaft may not be degraded.

公开(公告)号：US20200328657A1

公开(公告)日：2020-10-15

申请号：US16512471

申请日：2019-07-16

Applicant: LG ELECTRONICS INC.

Inventor： Taeyong Jung ,  Youngil Park ,  Haerim Yang ,  Hyeonho Ha

IPC: H02K9/19 ,  H02K1/32 ,  H02K7/00 ,  H02K11/21

Abstract: A motor includes a rotary shaft having at least one spray hole for spraying a cooling fluid, a rotor installed on the rotary shaft, and a stator surrounding an outer circumference of the rotor, wherein the rotor includes a plurality of rotor blocks arranged on an outer circumference of the rotary shaft. Each of the rotor blocks may include a magnet installed at a rotor core and a cooling guide may be disposed between a pair of the plurality of rotor blocks and form a spray flow path for guiding a cooling fluid that has passed through the spray hole to be sprayed in a direction toward an inner circumference of the stator.