Composite Ball Joint Housing for Lightweight Vehicle Suspension
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Solution Overview
Problem
Existing vehicle suspension systems are heavy due to steel components and require multiple sub-components, increasing weight and manufacturing costs.
Innovation Solution
A suspension apparatus made of plastic and metal components, including a plastic pipe and metal reinforcement, with integrated deformation portions for securing covers, reducing weight and component count while maintaining rigidity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If steel components are used for the ball joint casing and pipe portion, then strength and durability are improved, but weight increases
Solution Approach 1:
The invention uses composite materials by combining plastic (for the pipe portion and coupling portion) with metal reinforcement ribs and metal nut portions. This allows the main body to be made of lightweight plastic while metal elements provide the necessary strength and durability, thereby reducing overall weight while maintaining mechanical performance
Solution Approach 2:
The invention applies local quality by strategically placing metal reinforcement ribs at specific locations where strength is needed, rather than making the entire component metal. The reinforcement ribs are positioned to strengthen the pipe portion and coupling portion locally, providing strength only where required while keeping the rest of the structure lightweight plastic
2Reliability
If multiple sub-components (ring, dust cover, seals) are used to secure covers, then reliability is improved, but device complexity increases
Solution Approach 1:
The invention merges multiple functions into the reinforcement ribs, which simultaneously provide structural strengthening and serve as securing elements for the dust cover and seals. The reinforcement ribs are integrally formed with the pipe portion and coupling portion, eliminating the need for separate rings and multiple fastening components, thus reducing device complexity while maintaining reliability
Solution Approach 2:
The reinforcement ribs perform multiple functions: they strengthen the plastic structure, provide mounting surfaces for seals, and secure the dust cover. This multi-functionality reduces the need for separate dedicated components for each function, simplifying the overall device structure while maintaining reliability
Data Source
AI summary
A suspension apparatus for a vehicle includes an arm portion, a coupling portion bolted to the arm portion, a pipe portion provided in the coupling portion, a reinforcement portion provided on the pipe portion to reinforce rigidity of the pipe portion, a ball stud jointly coupled to the pipe portion, a first cover portion constrained by the reinforcement portion to be secured to the pipe portion and covering a first opening portion of the pipe portion, and a second cover portion constrained by the reinforcement portion to be secured to the pipe portion and covering a second opening portion of the pipe portion.