Die-Cast Wheel House Structure for Collision Load Dispersion

The wheel house is designed with a spherical shell shape featuring concave and convex curved surfaces. This spherical geometry provides inherent structural strength and rigidity while minimizing weight, as curved surfaces efficiently distribute and disperse collision loads throughout the structure rather than concentrating stress at flat joints or corners.

The invention introduces inclined ribs that extend in the vehicle width direction from the frame connection portion. These ribs add a third dimension of structural reinforcement to the spherical shell, creating a composite structure that combines the weight efficiency of curved surfaces with the strength of rib reinforcement, thereby achieving both weight reduction and enhanced collision resistance.

The wheel house and floor panel are merged into a single integral component formed by die casting. This consolidation eliminates the need for separate parts and connection joints, reducing overall weight while maintaining structural strength through the unified spherical shell design that distributes loads efficiently across the entire structure.

The spherical shell structure provides uniform strength distribution across all surfaces, with the inclined ribs providing localized reinforcement where collision loads are most likely to occur. This local quality enhancement allows the structure to maintain high strength characteristics while using material efficiently, achieving weight reduction without compromising safety.