Vehicle Front Body Frame for Small Overlap Collision Evasion
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Solution Overview
Problem
Existing vehicle front body structures lack sufficient rigidity and fail to induce an evasive behavior during small overlap collisions, leading to deformation of the A-pillar and potential occupant injury.
Innovation Solution
A front body structure that connects front side members in the width direction of the vehicle using a frunk support bar, frunk side bar, and slide away bar, forming a box-shaped frame structure to enhance rigidity and transfer collision loads between side members, thereby inducing an evasive behavior.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the pair of front side members spaced apart in the width direction are not connected between the front back beam and dash panel, then the device complexity is reduced, but the rigidity of the front body is insufficient and evasive behavior cannot be induced
Solution Approach 1:
The patent introduces a width-direction connection structure (front end module upper member spanning between left and right front side members) to the longitudinal arrangement of front side members. This dimensional addition creates a triangular rigid framework that prevents deformation during small overlap collisions, enabling evasive behavior while maintaining structural integrity.
2Stability of the object's composition
If the front side members are connected in the width direction using additional members, then the rigidity of the vehicle body is reinforced, but the device complexity increases
Solution Approach 1:
The front end module upper member serves multiple functions: it connects the left and right front side members in the width direction to prevent deformation, acts as a load transfer path during small overlap collisions, and provides structural support for the front end module. This multi-functionality reinforces vehicle body rigidity without proportionally increasing complexity.
3Reliability
If the A-pillar is caught on the barrier during rotation behavior, then the collision load is transmitted to the body structure, but the occupant safety is compromised due to insufficient rigidity
Solution Approach 1:
The patent pre-establishes a rigid triangular framework connecting the front side members in the width direction before collision occurs. This preliminary structural reinforcement ensures that when collision loads are transmitted through the A-pillar during rotation behavior, the force is distributed across the rigid framework rather than causing deformation, thereby protecting occupants.
Data Source
AI summary
A front body structure of a vehicle, which is capable of inducing an evasive behavior of the vehicle in the event of a small overlap collision and reinforcing the rigidity of a vehicle body, may include a pair of front side members disposed in a longitudinal direction of the vehicle and spaced apart from each other in a width direction of the vehicle, a front end module upper member disposed in the width direction of the vehicle and including both end portions located above the front side members, a frunk support bar disposed in the width direction of the vehicle behind the front end module upper member, and a frunk side bar connecting the front end module upper member to the frunk support bar.