Bumper Assembly Impact Dispersion Plate Reinforcement
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Solution Overview
Problem
Current vehicle bumper designs face challenges in effectively dispersing impact deformation during crash tests, particularly in managing high-speed and low-speed impacts, as they often rely on heavy cross members and secondary crush cans that compromise packaging space and mass efficiency.
Innovation Solution
The introduction of reinforced impact dispersion plates with upright and lower reinforcement members, configured to disperse deformation over an expanded impact surface, providing a hollow beam structure that enhances impact absorption while reducing mass and improving packaging flexibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy cross members and secondary crush cans are used to disperse impact deformation, then impact absorption effectiveness is improved, but vehicle mass increases and packaging space decreases
Solution Approach 1:
The patent changes the structural parameters of the bumper assembly by replacing traditional heavy cross members and secondary crush cans with a hollow beam structure. This hollow beam maintains the necessary strength and impact dispersion capability while significantly reducing the mass of the component, thus resolving the contradiction between impact absorption effectiveness and vehicle mass.
Solution Approach 2:
The hollow beam structure functions as a composite structural element that combines the functions of cross members and crush cans into a single integrated component. This composite approach achieves equivalent or superior impact absorption performance while reducing overall mass and freeing up packaging space within the bumper assembly.
2Reliability
If heavy cross members and secondary crush cans are used to disperse impact deformation, then impact absorption effectiveness is improved, but packaging space availability decreases
Solution Approach 1:
The patent merges the functions of multiple separate components (cross members and secondary crush cans) into a single hollow beam structure. This consolidation reduces the total volume occupied by these support structures, thereby increasing the available packaging space within the bumper assembly while maintaining impact absorption effectiveness.
Solution Approach 2:
By changing the structural configuration from solid heavy cross members to a hollow beam design, the patent reduces the volume occupied by support structures. This parameter change optimizes the space utilization within the bumper assembly, providing more packaging space for other vehicle components.
3Area of stationary object
If the impact dispersion plate extends downward to expand the effective impact surface, then deformation dispersion is improved, but structural support requirements increase
Solution Approach 1:
The hollow beam structure serves as an integrated reinforcement that provides the necessary structural support for the extended impact dispersion plate. This composite structural approach allows the plate to extend downward and increase the effective impact surface area while the hollow beam provides the required strength and support without adding excessive mass.
Data Source
AI summary
A vehicle bumper assembly includes a bumper beam and a crush can attached to an end portion of the bumper beam. An impact dispersion plate is attached to a front face of the bumper beam at the end portion of the bumper beam. A front surface of the impact dispersion plate extends downward from the front face of the bumper beam. A lower reinforcement member attached to a rear surface of the impact dispersion plate and extends along a lower section of the impact dispersion plate. An upright reinforcement member has an upper portion attached to the bumper beam and a lower portion attached to the lower reinforcement member. The upright and lower reinforcement members are configured, upon impact with a barrier, to disperse deformation of the barrier over the impact dispersion plate below the bumper beam.