Automotive Structural Member With L-Shaped Corner Reinforcement

The structural member is divided into multiple functional segments: a press-formed product with integrated reinforcing ribs and separate corner reinforcement members. This segmentation allows each part to be optimized independently - the press-formed product provides overall structural integrity while the corner reinforcement members specifically address weak points at corners, thereby improving collision safety performance without requiring complete redesign of the entire structure.

Reinforcing ribs are pre-formed as integral parts of the press-formed product during the manufacturing process, and corner reinforcement members are positioned and secured before final assembly. This preliminary action ensures that reinforcement structures are already in place to resist deformation during three-point bending tests, improving collision safety performance without adding complex post-manufacturing steps.

Instead of uniformly reinforcing the entire structural member, reinforcing ribs are strategically placed in specific locations where stress concentration occurs during three-point bending tests, and corner reinforcement members are positioned only at corner locations. This local quality approach provides necessary strength improvements for collision safety while minimizing the addition of material, thereby controlling weight increase.

The structural member combines different material forms and structures - a press-formed product with integrated ribs and separate corner reinforcement members - to create a composite structure. This composite approach allows optimization of each component's material usage, providing high collision safety performance while maintaining weight efficiency through targeted reinforcement rather than uniform material distribution.