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AssigneeMazda Motor Corporation
InventorsKatsunori Hanakawa, Kyoso Ishida, Takayuki Sunakawa, Yukihiro Sugimoto
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A pair of left and right front frames are formed with brittle sections on proximal portions of the frames, by the provision of the smaller cross-sectional area than other sections of the frame. The brittle sections and their peripheral sections are processed so as to become approximately equal to the other sections of the front frames in axial compressive strength by way of a hardening treatment like quenching. In an early-phase of a collision, the hardened brittle sections will not buckle so as to induce larger initial load. Thereafter, the brittle sections will buckle because of their lower ductility, so that the front frames begin bending deformation to effectively absorb the collision energy.
A body frame structure for a vehicle comprising:
A body frame structure for a vehicle comprising:
A body frame structure for a vehicle comprising:
A body frame structure for a vehicle comprising:
A method for manufacturing a body frame for a vehicle comprising the steps of:
A method for manufacturing a body frame for a vehicle comprising the steps of:
Dependencies are inferred from the claim text.