Interlocking Vehicle Bushing Assembly for End Support and Sealing
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Solution Overview
Problem
Current vehicle bushings suffer from premature failure due to lack of support at both ends, contamination ingress leading to degradation, and complex assembly requiring specialized tools, resulting in instability and increased maintenance costs.
Innovation Solution
A bushing assembly featuring interlocking bushings with compression caps and an inner sleeve, secured by fasteners, providing symmetrical support and a seal against contaminants, and allowing easy installation with standard tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional bushings are used with inner and outer bushings paired together, then the bushing assembly can be formed, but it requires a press to hold it together for installation and separate tools for left and right bushings
Solution Approach 1:
The patent combines left and right bushing designs into a single universal bushing assembly that can be installed on both sides using the same tools and procedure. The compression cap design with fasteners creates a unified assembly method that eliminates the need for different left/right specific tools and pressing equipment.
Solution Approach 2:
The bushing assembly is segmented into distinct components (inner bushing, outer bushing, compression cap, fasteners) that can be independently assembled and then installed as a complete unit. This segmentation allows for easy assembly without requiring specialized pressing tools, as each component can be prepared separately and then installed together.
2Reliability
If traditional bushings without end support are used, then the structure is simpler, but they suffer from premature failure due to constant cyclical loading
Solution Approach 1:
The compression cap and fastener system provides pre-established support and cushioning at both ends of the inner bushing before loading occurs. This beforehand support structure prevents the premature failure that results from constant cyclical loading by distributing stresses evenly across the bushing assembly.
Solution Approach 2:
The bushing assembly uses composite construction with different materials for the inner bushing, outer bushing, and compression cap, each optimized for specific functions. This composite structure provides enhanced durability and load distribution while maintaining reasonable structural complexity.
3Reliability
If traditional bushings without seals are used, then the assembly is simpler, but grease and dirt enter cavities causing degradation and premature failure
Solution Approach 1:
The compression cap acts as a flexible sealing element that prevents grease and dirt from entering the bushing cavities. This thin film-like barrier provides contamination protection while maintaining the relative simplicity of the overall assembly structure.
4Reliability
If traditional bushings with glue are used, then the components are held together, but glue failure or de-bonding occurs causing control arm misalignment
Solution Approach 1:
The patent replaces the chemical bonding system (glue) with a mechanical fastening system using compression caps and fasteners. This mechanical system provides reliable connection without the risk of glue failure or de-bonding, while actually simplifying the joining mechanism by eliminating adhesive application and curing processes.
Data Source
AI summary
A bushing assembly for a vehicle including a first bushing with an inner diameter, an outer diameter, and interlocking teeth extending from it and a second bushing with an inner diameter, an outer diameter, and interlocking teeth extending from it. The first bushing and the second bushing are joined by their respective interlocking teeth. An inner sleeve with a first end and a second end is enclosed within the inner diameter of the first bushing and the inner diameter of the second bushing. A first compression cap on the first bushing is threadedly fastened to the inner sleeve, and a second compression cap on the second bushing is threadedly fasten to the inner sleeve.