Suspension Reinforcing Structure With Inclined Bracket Load Paths
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Solution Overview
Problem
Current suspension systems for vehicles, particularly those using coupled torsion beam axles, face durability issues when subjected to large loads, leading to increased weight and costs due to the need for thicker parts or material changes to withstand increased loads on shock absorber brackets and spring seats.
Innovation Solution
A reinforcing structure for suspension systems that includes a shock absorber bracket with inclined side and upper coupling portions, and a spring seat with specific coupling portions, which are designed to distribute loads effectively across the trailing arm and torsion beam, enhancing durability without increasing part thickness or weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the thickness of the shock absorber bracket or spring seat is increased to withstand large loads, then durability is improved, but vehicle body weight and manufacturing costs increase
Solution Approach 1:
The coupling portion of the shock absorber bracket is designed with an inclined surface that extends in both the longitudinal direction (X) and height direction (Z) of the vehicle body, creating a three-dimensional load distribution structure. This multi-directional coupling geometry allows loads to be dispersed across multiple spatial dimensions rather than concentrated in a single plane, improving durability without requiring increased material thickness or weight
Solution Approach 2:
The coupling portion is divided into multiple functional surfaces: a first coupling surface facing the longitudinal direction, a second coupling surface facing the height direction, and a third coupling surface facing the width direction. This segmentation of the coupling interface allows different portions of the applied load to be distributed to different surfaces, effectively reducing the stress concentration on any single area and eliminating the need for thicker brackets
2Reliability
If the thickness of the shock absorber bracket or spring seat is increased to withstand large loads, then durability is improved, but manufacturing costs increase
Solution Approach 1:
The coupling portion utilizes an inclined surface design that distributes loads across multiple spatial dimensions (longitudinal X, height Z, and width Y directions). This three-dimensional load path creates a more efficient stress distribution that reduces the required material thickness, thereby lowering manufacturing costs while maintaining durability
Solution Approach 2:
The inclination angle of the coupling surface is specifically designed to optimize load distribution. By adjusting the geometric parameters of the coupling portion, particularly the inclination angle relative to the longitudinal and height directions, the structure achieves maximum load-bearing efficiency with minimum material usage, reducing both manufacturing complexity and cost
3Ease of manufacture
If the shock absorber bracket uses a traditional vertical or horizontal coupling design, then manufacturing is simpler, but it cannot effectively support large loads in multiple directions
Solution Approach 1:
The coupling portion is designed with an inclined surface that simultaneously responds to loads in the longitudinal direction (X), height direction (Z), and width direction (Y). This multi-dimensional coupling geometry transforms the traditional single-plane coupling into a three-dimensional load-bearing structure, enabling effective support of large loads from multiple directions while maintaining manufacturing feasibility through standard forming processes
Solution Approach 2:
The coupling surface is designed with an asymmetric inclination angle rather than a symmetric vertical or horizontal configuration. This asymmetric geometry is optimized to match the actual load vectors experienced during vehicle operation, allowing the bracket to efficiently handle combined loads from spring and shock absorber forces while remaining manufacturable using conventional techniques
Data Source
AI summary
A reinforcing structure for suspension, includes: a spring seat coupled to a torsion beam and a trailing arm, and configured for supporting a spring; and a shock absorber bracket coupled to the spring seat and the trailing arm, and configured for supporting a shock absorber for damping vibrations of the spring, wherein the shock absorber bracket includes, a side coupling portion coupled to the trailing arm, wherein the side coupling portion is coupled to a side surface of the trailing arm in a width direction (Y) of a vehicle body in a state of being inclined at a predetermined angle with respect to each of a longitudinal direction (X) and a height direction (Z) of the vehicle body.