Sliding Door Reinforcement Structure for Uniform Side Impact Strength
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Solution Overview
Problem
The vehicle body of Purpose Built Vehicles (PBVs) experiences a local strength difference between the sliding door and passenger seat areas, leading to increased breakage and buckling during side impacts due to varying structural strengths.
Innovation Solution
A sliding door mounting reinforcement structure is introduced, comprising a sliding door lower reinforcement with a guide rail, a center floor cross unit, and a center pillar, which form a closed cross-section to distribute impact loads and enhance side strength uniformly across the vehicle body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a sliding door is applied to the rear of the passenger seat to provide customized services, then the vehicle body can be configured more economically, but a difference in vehicle body strength between the sliding door part and the passenger seat position occurs
Solution Approach 1:
The patent applies local quality by adding specific reinforcement structures (sliding door lower reinforcement, center floor cross unit, and center pillar) to the sliding door mounting area. These reinforcements are localized to where needed rather than strengthening the entire vehicle body, thus maintaining economic configuration while addressing the local strength deficiency at the sliding door position.
Solution Approach 2:
The patent merges multiple reinforcement components into an integrated structure. The sliding door lower reinforcement is combined with the center floor cross unit and center pillar to form a unified reinforcement system that works together to distribute impact loads effectively across the vehicle body side structure.
2Ease of manufacture
If the door is not applied to the passenger seat, then the vehicle body can be configured more economically, but the breakage and buckling phenomenon of the sliding door part is exacerbated during side impact
Solution Approach 1:
The patent implements beforehand cushioning by pre-installing reinforcement structures in the sliding door area before side impact occurs. The sliding door lower reinforcement, center floor cross unit, and center pillar are positioned in advance to cushion and distribute impact forces, preventing breakage and buckling during side collisions.
3Strength
If reinforcement structures are added to the sliding door area, then the side strength of the vehicle body becomes uniform, but the device complexity increases
Solution Approach 1:
The patent applies universality by designing reinforcement components that serve multiple functions. The sliding door lower reinforcement not only strengthens the sliding door mounting area but also provides structural support for the guide rail. The center floor cross unit and center pillar simultaneously enhance side strength and contribute to overall vehicle body rigidity, reducing the need for separate dedicated reinforcement elements.
Data Source
AI summary
An embodiment sliding door mounting reinforcement structure includes a sliding door lower reinforcement configured to be mounted on a side of a vehicle body along a length direction of the vehicle body, the sliding door lower reinforcement including a guide rail mounted therein, the guide rail being configured to guide movement of a sliding door, and a center floor cross unit configured to be mounted in a width direction of the vehicle body, wherein the sliding door lower reinforcement and the center floor cross unit are combined.