Rear Body Spring Seat Structure With Multi-Path Load Transfer
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Solution Overview
Problem
Current rear vehicle body structures face challenges in efficiently transmitting upward and downward loads due to insufficient load paths and increased component count, leading to weight and cost issues, as well as limited coupling rigidity in spring seat assemblies.
Innovation Solution
The proposed rear vehicle body structure incorporates aluminum die-cast spring seats with integrated vertical ribs and reinforcing members, featuring a spring mounting part with fastening ribs and a rib reinforcing part with box ribs, which disperses loads through multiple paths to wheelhouse panels, reducing the number of components and enhancing rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If separate connection components are used to improve spring seat assembly connectivity, then coupling rigidity is improved, but the number of components and vehicle body weight increase
Solution Approach 1:
The spring seat assembly integrates the spring seat, mounting brackets, and reinforcement structures into a single unified component. This merging eliminates the need for separate connection components while maintaining coupling rigidity through the integrated structural design that combines multiple functions into one piece.
Solution Approach 2:
The integrated spring seat assembly performs multiple functions simultaneously: it supports the spring, provides mounting connections, reinforces the vehicle body structure, and ensures proper load transmission. This multi-functionality replaces what previously required multiple separate components.
2Strength
If separate connection components are used to improve spring seat assembly connectivity, then coupling rigidity is improved, but vehicle body cost increases
Solution Approach 1:
By combining multiple components into a single integrated spring seat assembly, the manufacturing process is simplified. This reduces assembly steps, lowers labor costs, and decreases the overall production complexity, thereby reducing vehicle body cost while maintaining the required coupling rigidity.
3Quantity of substance
If the spring seat assembly structure is simplified, then the number of components is reduced, but load transmission performance deteriorates
Solution Approach 1:
The integrated spring seat assembly incorporates localized reinforcement features such as rib structures and thickened sections at critical load-bearing areas. This local quality enhancement ensures that load transmission performance is maintained or improved in key regions while keeping the overall component count reduced.
Solution Approach 2:
The spring seat assembly utilizes composite construction with strategically placed reinforcement elements that provide enhanced load transmission capabilities. The combination of different structural features within the integrated component creates a composite structure that optimizes both weight reduction and load transmission reliability.
Data Source
AI summary
A rear vehicle body structure includes two opposite rear side members to which wheelhouse panels are respectively coupled and spring seats positioned respectively at lower sides of the two opposite rear side members.