Rear Frame Assembly for Compact Sports Car Crash Strength
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Solution Overview
Problem
The reduced dimensions of sports car body structures compromise collision strength and driving safety due to downsized rear portions made of traditional metallic materials.
Innovation Solution
A vehicle design incorporating a rear crossbeam and left and right rear longitudinal beams forming a π-shaped rear frame assembly that enhances structural strength and impact resistance through force transmission and energy absorption under rear and side collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If traditional metallic materials are used for the body structure, then the manufacturing process is simple and cost-effective, but the structural strength and impact resistance are insufficient due to reduced dimensions
Solution Approach 1:
The patent applies composite materials (carbon fiber reinforced plastic) to replace traditional metallic materials in the body structure. This allows achieving higher structural strength and impact resistance with reduced dimensions, as composite materials have superior strength-to-weight ratio and can maintain structural integrity with smaller cross-sections
2Shape
If the rear portion dimensions are reduced, then the vehicle achieves a more compact and sporty design, but the collision strength at the rear is compromised
Solution Approach 1:
The patent uses carbon fiber reinforced plastic materials in the rear portion body structure to maintain compact and sporty design dimensions while achieving sufficient collision strength. The composite material properties enable the smaller rear structure to withstand impact forces that would be insufficient in traditional metallic constructions of the same size
3Ease of manufacture
If traditional metallic materials are used, then the material is easy to process and manufacture, but the energy absorption capability during collision is insufficient
Solution Approach 1:
The patent employs carbon fiber reinforced plastic composite materials that demonstrate superior energy absorption characteristics during collision compared to traditional metallic materials. The composite structure can dissipate collision energy more effectively through material deformation and fracture mechanisms, reducing the energy transmitted to occupants while remaining manufacturable through modern composite fabrication processes
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
A vehicle, comprising: a rear crossbeam (5) that can provide connection and support effects in the width direction of the vehicle; a left rear longitudinal beam that comprises a left rear longitudinal beam front section (1) and a left rear longitudinal beam rear section (3), the left rear longitudinal beam rear section (3) being connected to the left rear longitudinal beam front section (1) to form the detachably connected left rear longitudinal beam, thereby facilitating the assembly and disassembly of the vehicle, and the left rear longitudinal beam front section (1) being connected to the left end of the rear crossbeam (5) so as to facilitate force transmission from the left rear longitudinal beam to the rear crossbeam (5); and a right rear longitudinal beam that comprises a right rear longitudinal beam front section (2) and a right rear longitudinal beam rear section (4), the right rear longitudinal beam rear section (4) being connected to the right rear longitudinal beam front section (2) to form the detachably connected right rear longitudinal beam, thereby facilitating the assembly and disassembly of the vehicle, and the right rear longitudinal beam front section (2) being connected to the right end of the rear crossbeam (5) so as to facilitate force transmission of the vehicle in multiple directions.