公开(公告)号：US20200373806A1

公开(公告)日：2020-11-26

申请号：US16881342

申请日：2020-05-22

Applicant: LG ELECTRONICS, INC.

Inventor： Jaekwang NAM ,  Hyoung Uk NAM ,  Jin HONG

IPC: H02K5/10 ,  H02K3/50 ,  H02K7/00 ,  H02K21/22 ,  B60K7/00 ,  B60B21/00 ,  B60B7/00 ,  B60B21/10 ,  B60B7/14

Abstract: The present invention relates to an in-wheel motor. The in-wheel motor according to an embodiment of the present invention includes: a circular rim to which a tire is coupled by being wrapped around an outer ring thereof and a shaft is connected by passing through a center thereof; a motor assembly which is disposed in an inner portion of the rim and includes a stator connected to the shaft and a rotor disposed to be wrapped around the stator and configured to rotate; a cover coupled to cover one open side surface of the rim and configured to seal the inner portion of the rim; and a lead-out wire entry/exit portion waterproof structure configured to seal an entry/exit portion for a lead-out wire connected to supply power from outside of the in-wheel motor to the inner portion of the rim via a hollow portion of the shaft, wherein the lead-out wire entry/exit portion waterproof structure includes an elastic stopper, to which the lead-out wire is connected to pass through a center thereof and which is configured to be elastically contracted after being inserted into the hollow portion of the shaft in an axial direction and seal between the hollow portion of the shaft and the lead-out wire, and a stopper fixing body fastened to the shaft and configured to press the elastic stopper in the axial direction so that the elastic stopper is inserted and fixed inside the hollow portion of the shaft.

公开(公告)号：US20200240481A1

公开(公告)日：2020-07-30

申请号：US16742575

申请日：2020-01-14

Applicant: LG ELECTRONICS INC.

Inventor： Jaekwang NAM ,  Hyojin KO ,  Dosun KIM ,  Yeon Soo LEE

IPC: F16D63/00 ,  B60K7/00 ,  B60T1/00 ,  A61G5/10 ,  A61G5/04

Abstract: Disclosed herein are a brake device of an in-wheel motor and an in-wheel motor including the same. The brake device of an in-wheel motor includes a brake drum part fixed to one surface of a rim of an in-wheel motor and having at least one hole, and at least one pin pushing/pulling driver installed inside the brake drum part in a radial direction thereof and configured to push or pull a pin, which is insertable into the hole according to an input of a braking signal of the in-wheel motor, toward or from the hole. The brake drum part includes a disc body having a hollow and an outer wall, wherein a shaft of the in-wheel motor is disposed to pass through the hollow and the outer wall is fixed to the rim, and a circumferential protrusion protruding a predetermined length in a direction spaced apart from the disc body to the rim and having the hole in the circumferential protrusion. When the braking signal is input, a braking force is rapidly applied to the in-wheel motor, and also the braking force is constantly maintained using a mechanical mechanism even when a supply of electric power is cut off on an inclined road and the like such that safety can be improved.