Vehicle underbody assembly with thermally treated rear rail
US10633037B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2017 |
| Grant date | Apr 28, 2020 |
| Priority date | — |
| Expiry date | Dec 26, 2037 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC21D2221/01
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A vehicle underbody assembly including a pair of rockers, a pair of rear rails, a first cross member, and a second cross member is provided. Each of the pair or rear rails extends from one of the rockers and each includes a rear portion, a first mid-portion, a second mid-portion, and a forward portion. Each of the forward portions is secured to one of the rockers at one of a first joint and a second joint. The first cross member extends between the rear rails at a transition region between the second mid-portion and the forward portion. The second cross member extends between the rear rails at locations adjacent the first and second joints. Each of the rear rails is thermally treated so that the second mid-portions form a hard strength zone. The hard strength zone may further be defined as a zone having a fully martensitic microstructure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.