Front Vehicle Body Reinforcing Structure for Small Overlap Collision
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Solution Overview
Problem
Current front vehicle body structures are inadequate in maintaining structural integrity and occupant safety during a small overlap collision, as the collision object penetrates the vehicle's outer periphery with relatively low rigidity, leading to compromised stability and damage.
Innovation Solution
A front vehicle body reinforcing structure that includes an insert member with a three-dimensional box structure inserted into the front side member and a fender apron member forming a closed cross-section, which disperses impact energy by overlapping and coupling these members to enhance structural rigidity and load absorption during collisions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the outer periphery of the vehicle body is reinforced by extending the front tip portion of the front fender apron member or mounting a reinforcing member, then the structural rigidity is improved, but the device complexity increases
Solution Approach 1:
The insert member is inserted into the front end portion of the front side member, creating a nested structure where one component is placed inside another. This nested configuration reinforces the front side member without requiring external additions, thereby improving structural rigidity while avoiding increased device complexity
Solution Approach 2:
The insert member integrates the reinforcement function with the existing front side member structure. By combining the reinforcement function into the insert member that fits within the front side member, the design achieves structural reinforcement without adding separate external reinforcing components
2Reliability
If the front side member and fender apron member are connected with high coupling rigidity, then the impact energy dispersion is improved, but the manufacturing precision requirements increase
Solution Approach 1:
The front side member is divided into the front side member itself and the separate insert member. This segmentation allows the insert member to be manufactured independently with standard tolerances, then assembled into the front side member to achieve high coupling rigidity without requiring the entire assembly to be manufactured as a single precision component
Solution Approach 2:
The insert member acts as an intermediary component between the fender apron member and the front side member. This intermediary structure provides the coupling rigidity needed for effective impact energy dispersion while allowing each component to be manufactured separately with conventional precision standards
Data Source
AI summary
A front vehicle body reinforcing structure capable of improving collision stability at the time of a head-on collision, an offset collision, or a small overlap collision of a vehicle is provided. The front vehicle body reinforcing structure reinforces a portion where a front side member and a fender apron member of a front vehicle body are connected to each other. The front vehicle body reinforcing structure includes an insert member which is inserted into a front end portion of the front side member and a front end mounting bracket which is connected to a front end of the insert member and fastened to a different portion of the vehicle body. The fender apron member supports a rear end of a portion of the insert member that is separate from the front side member.