Vehicular Dust Cover Assembly Nested Within Bound Stopper
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Solution Overview
Problem
Existing dust cover and bound stopper assemblies for vehicular shock absorbers face issues with material selection due to differing requirements and are prone to damage from external factors like splashing stones, with the dust cover being exposed and difficult to assemble, especially on round cylinder-shaped outer metal fittings.
Innovation Solution
A vehicular dust cover assembly with an upper support featuring an engaging step on the bound stopper and an engaging projection on the outer metal fitting, allowing the dust cover to be sandwiched between these components, ensuring secure assembly and protection from external damage, while allowing for various shapes and materials of the outer metal fitting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the dust cover is externally fit and fixed to the outer metal fitting, then the assembly is simple, but the dust cover is exposed to external damage from splashing stones
Solution Approach 1:
The dust cover is nested within the bound stopper, which is in turn nested within the upper support structure. The fitting recess of the upper support receives the bound stopper, and the dust cover is positioned inside this nested arrangement, protecting it from external damage while maintaining assembly simplicity
Solution Approach 2:
The assembly is segmented into distinct functional parts: the upper support with fitting recess, the bound stopper with engaging step, and the dust cover. This segmentation allows each component to perform its specific function while being protected by the overall nested structure
2Ease of manufacture
If the outer metal fitting has a round cylinder shape, then the structure is simple, but it is difficult to assemble the dust cover when the surface is not round
Solution Approach 1:
The fitting recess and bound stopper are designed with universal engagement features (engaging projection and engaging step) that can accommodate various shapes of outer metal fittings. The bound stopper can be assembled to different shaped fittings while maintaining the same engagement mechanism, making the system adaptable to round, square, or irregular shapes
3Adaptability or versatility
If the dust cover and bound stopper are separately formed, then suitable materials can be selected for each, but the assembly structure becomes complex
Solution Approach 1:
The separately formed dust cover and bound stopper are assembled through a nested arrangement where the dust cover fits within the bound stopper, which fits within the upper support. This nested structure simplifies the overall assembly while maintaining the ability to use different materials for each component
Data Source
AI summary
A vehicular dust cover assembly including: an upper support; a bound stopper and a dust cover assembled to the upper support; and an engaging step provided on an outer circumferential surface of the bound stopper. A top end part of the dust cover is externally fit to a top end part of the bound stopper. The upper support includes an outer metal fitting having a fitting recess within which the top end part of the bound stopper is fit and assembled. An engaging projection is provided projecting on an inner surface of the fitting recess to be engaged with the engaging step with the dust cover interposed therebetween. The bound stopper includes an axial pushing operation surface exposed facing axially downward which is provided at a lower side than the engaging step and at a position inside the fitting recess.