公开(公告)号：US20240343107A1

公开(公告)日：2024-10-17

申请号：US18580215

申请日：2022-07-05

Applicant: Dong-Hoon PARK ,  C-STONE TECHNOLOGIES CO., LTD.

Inventor： Dong-Hoon PARK ,  June Ki MIN

IPC: B60K7/00

CPC classification number: B60K7/0007 ,  B60K2007/0038 ,  B60K2007/0092

Abstract: Disclosed is a power transmission device. The power transmission device may include: a drive motor including a motor housing having a front surface, a rear cover coupled to a rear surface of the motor housing, a stator fixed in the motor housing and configured to generate a magnetic field, a rotor disposed inside the stator based on a diameter direction with a preset gap from the stator and configured to be rotated by the magnetic field generated by the stator, a motor shaft coupled to the rotor and configured to rotate together with the rotor, the motor shaft extending in a longitudinal direction and penetrating the front surface and the rear cover, and a driving gear provided at one end of the motor shaft penetrating the front surface and protruding to the outside of the motor housing; a drum configured to surround the drive motor and including a drum circular plate portion provided on one surface based on a wheel axis direction, and a cylindrical portion extending in the wheel axis direction from an outer diameter end of the drum circular plate portion; a drum cover coupled to the other surface of the drum based on the wheel axis direction and having an outer-diameter portion on which a driven gear engaging with the driving gear is provided; and a wheel hub on which a tire is mounted, the wheel hub being coupled to the drum and configured to rotate together with the drum.

公开(公告)号：US20240017606A1

公开(公告)日：2024-01-18

申请号：US18031707

申请日：2021-11-09

Applicant: Dong-Hoon PARK ,  C-STONE TECHNOLOGIES CO., LTD.

Inventor： Dong-Hoon PARK ,  June Ki MIN

IPC: B60K17/04 ,  B60K7/00

CPC classification number: B60K17/046 ,  B60K7/0007

Abstract: A power transmission device is disclosed.
The power transmission device may include a power portion including a power generating portion including a power source generating power, and a fixing portion extending from the power generating portion in an axial direction, a driving member operatively connected to the power source and including a driving gear, a driven member including a driven gear engaged with the driving gear, a rotating member coupled to the driven member and rotating with the driven member, and an output member having a rotating wheel mounted thereon, defining an axial width, coupled to the rotating member, and rotating with the rotating member, the power source may include a power source shaft, and the power source shaft may be disposed in a range of −25° to 25° with respect to a radial direction of a rotating wheel.