Crashworthiness energy absorption parts for automotive
US11975762B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 12, 2019 |
| Grant date | May 7, 2024 |
| Priority date | — |
| Expiry date | Jan 20, 2041 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D29/002
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A crashworthiness energy absorption part includes: a tubular member having tensile strength of 590 to 1180 MPa grade; a closed cross section space forming wall part having tensile strength lower than the tubular member and having both edge portions joined to inner surfaces of a pair of side wall portions of the tubular member, and forming a closed cross section space between the closed cross section space forming wall part and a part of a peripheral wall portion of the tubular member; and a resin configured to fill the closed cross section space, includes a rubber-modified epoxy resin and a curing agent, and has tensile breaking elongation of 80% or more, adhesive strength to the tubular member and closed cross section space forming wall part of 12 MPa or higher, and a compression nominal stress of 6 MPa or higher at a compression nominal strain of 10%.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.