Hollow-Shell Suspension Assembly for Lightweight Impact Damping
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Solution Overview
Problem
Existing suspension assemblies for caravans fail to effectively absorb vibrations, manage sudden impact loads, maximize tire grip, maintain steering stability, and minimize weight and complexity, while also simplifying manufacturing and reducing stock requirements.
Innovation Solution
A suspension assembly featuring shell components that form a hollow body, allowing for reduced weight and increased stiffness, with identical components for manufacturing efficiency, and a damping arrangement with adjustable stub axle positions for enhanced flexibility and ease of replacement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If traditional RHS steel tube construction is used for suspension assemblies, then structural strength is maintained, but weight increases
Solution Approach 1:
The patent applies this principle by using thin-walled hollow shell components instead of traditional thick RHS steel tubes. The shell construction with optimized wall thickness provides sufficient structural strength while dramatically reducing the weight of the suspension assembly, directly resolving the contradiction between weight reduction and strength maintenance.
Solution Approach 2:
The patent employs composite construction by combining multiple shell components (front shell, rear shell, side shells) with damping arrangements and structural members. This composite approach allows each component to be optimized for its specific function, achieving overall structural strength with reduced total weight compared to solid RHS tube construction.
2Weight of moving object
If shell construction is used instead of RHS tube, then weight is reduced, but manufacturing complexity increases
Solution Approach 1:
The patent divides the suspension assembly into separate modular shell components (front shell, rear shell, side shells) that can be manufactured independently using standard pressing techniques. These segments are then assembled through welding, allowing for simplified manufacturing of each individual component while achieving the weight benefits of shell construction overall.
Solution Approach 2:
The patent optimizes the wall thickness parameters of the shell components to achieve the right balance between weight reduction and manufacturing feasibility. By carefully selecting and standardizing wall thickness values, the design maintains ease of manufacture through conventional pressing and welding processes while maximizing weight savings.
3Object-affected harmful factors
If vibration absorption is enhanced, then ride comfort improves, but tire grip and steering stability may deteriorate
Solution Approach 1:
The patent applies local quality by implementing damping arrangements at specific locations within the suspension assembly rather than uniformly throughout. The damping elements are strategically positioned to absorb vibrations in critical areas while maintaining structural rigidity in regions responsible for steering stability and tire grip, thus resolving the contradiction between comfort and control.
Solution Approach 2:
The damping arrangements act as intermediary elements between the structural components, selectively absorbing harmful vibrations while allowing necessary structural movements for steering and tire contact. This intermediary damping function filters out harmful vibrations without compromising the overall structural integrity needed for steering stability.
Data Source
AI summary
A suspension assembly for a vehicle may have a first end for pivotal mounting to a structural member of the vehicle and a second end opposite the first end for attachment of a damping arrangement and a stub axle. The suspension assembly may include first and second shell components that are welded together to form a substantially hollow body between the first and second ends.