Vehicle Floor Reinforcing Structure for Offset Collision Load Dispersion
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Solution Overview
Problem
Existing vehicle body floor structures are inadequate in suppressing deformation during narrow offset collisions, as vertical and horizontal core members and floor frames may not effectively disperse collision loads, leading to potential damage.
Innovation Solution
A vehicle body floor structure incorporating a reinforcing portion with a side sill, outrigger, floor cross member, and tunnel frame, along with connecting members that form a Y-like shape or double-floor structure, to disperse collision loads and enhance yield strength.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If vertical core members and horizontal core members are arranged between upper and lower flat plates, then the floor structure provides basic support, but the deformation of floor panel cannot be sufficiently suppressed against collision load inclined rearward from outside in vehicle width direction
Solution Approach 1:
The patent introduces a reinforcing portion with members extending in the vehicle width direction (lateral direction) perpendicular to the longitudinal direction members. This adds a dimensional element to the load path, allowing collision loads to be dispersed through multiple directions rather than being concentrated along the longitudinal axis only.
Solution Approach 2:
The floor structure is divided into multiple functional components: vertical core members, horizontal core members, and a reinforcing portion with first and second members. This segmentation allows each component to handle specific portions of the collision load, with the reinforcing portion specifically addressing loads inclined rearward from outside in the vehicle width direction.
2Strength
If floor frame extends in longitudinal direction on bottom of floor panel, then floor panel is reinforced, but deformation cannot be sufficiently suppressed against collision load inclined rearward from outside in vehicle width direction
Solution Approach 1:
The reinforcing portion features asymmetric configuration where the first member connects to corner portions between side sills and outriggers, while the second member connects to front-end vehicle body skeleton parts. This asymmetric arrangement optimizes the load dispersion pattern for collision loads coming from specific directions (inclined rearward from outside in vehicle width direction).
Solution Approach 2:
The reinforcing portion adds lateral direction support members that work perpendicular to the longitudinal direction floor frame, creating a two-dimensional load dispersion network that effectively handles multi-directional collision forces.
3Strength
If reinforcing portion with first member connecting corner portions is added, then collision load is dispersed effectively, but device complexity increases
Solution Approach 1:
The reinforcing portion is integrated with the existing floor structure components (side sills, outriggers, floor cross members, tunnel frame) rather than being completely separate. The first member connects corner portions between these existing components, merging the reinforcing function with the structural framework.
Solution Approach 2:
The reinforcing portion members serve multiple functions: they reinforce the floor panel, disperse collision loads, and connect various structural components (side sills, outriggers, floor cross members, tunnel frame). This multi-functionality reduces the need for additional separate components.
Data Source
AI summary
A vehicle body floor structure reinforces a floor body by a reinforcing portion, and the floor body includes a side sill, an outrigger, a floor cross member, and a tunnel frame. The reinforcing portion includes a first member that connects a corner portion between the side sill and a vehicle body skeleton part formed by the outrigger to a corner portion between a vehicle body skeleton part formed by the floor cross member and a vehicle body skeleton part formed by the tunnel frame, and a second member that connects a front-end vehicle body skeleton part of a front end of the floor body to a middle portion of the first member.