In-wheel motor drive device mounted on motor vehicle
US12304301B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 30, 2023 |
| Grant date | May 20, 2025 |
| Priority date | — |
| Expiry date | Oct 30, 2043 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2057/02034
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A gear case of an in-wheel motor drive device houses first and second helical gears, has a first opening in its inner wall through which a motor main shaft passes, and has a second opening in its outer wall through which an axle passes. The in-wheel motor drive device further includes a first thrust bearing attached to the outer wall and supporting the first helical gear, and a second thrust bearing attached to the inner wall and supporting the second helical gear. The directions of helical teeth of the first and second helical gears are set so that when a motor vehicle travels forward, a thrust load directed outward in the vehicle width direction is applied to the first helical gear, and a thrust load directed toward the middle in the vehicle width direction is applied to the second helical gear.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.