Hydraulic Shock Absorber Cover Member Dent Resistance
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Solution Overview
Problem
The existing cover members for hydraulic shock absorbers are prone to denting, which can lead to stress and damage when subjected to external forces, as they lack sufficient rigidity and self-recovery mechanisms.
Innovation Solution
A cover member with hollowed peak portions that have edge parts contacting each other before side parts, allowing for self-recovery and reduced susceptibility to denting, featuring a design with edge parts connected to trough portions and a specific edge-to-side part geometry that facilitates repelling forces to return to the original shape.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the peak portions of the cover member have small rigidity to allow easy deformation, then the cover member can be easily formed and installed, but the peak portions are easily dented by external forces such as operator mistake or stone impact
Solution Approach 1:
The hollow part is formed locally within each peak portion, creating a local structural modification that increases rigidity where needed while preserving the overall flexibility of the cover member for stretching and shrinking operations
Solution Approach 2:
The hollow part introduces a three-dimensional void structure within the peak portion, transforming the cross-sectional geometry from solid to hollow, which significantly increases moment of inertia and resistance to denting forces without adding material
2Strength
If the peak portions are made rigid to prevent denting, then resistance to external forces improves, but the cover member loses flexibility in stretching and shrinking operations
Solution Approach 1:
The hollow part is segmented into discrete portions within each peak, allowing localized rigidity enhancement without affecting the overall flexibility of the cover member body, enabling it to stretch and shrink while maintaining dent resistance at peak portions
3Ease of operation
If the cover member allows easy deformation for installation, then ease of installation improves, but the dented peak portions cannot return to original shape, causing stress and potential tearing
Solution Approach 1:
The hollow part is pre-formed within each peak portion before the cover member is installed or used, providing built-in structural support that enables the peak to return to its original shape after deformation, preventing permanent dents and stress accumulation
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The cover member effectively prevents denting and self-recovery when subjected to external forces, reducing the risk of damage and stress, while maintaining functionality in shock absorption applications.
Implementation Method 1
the edge parts of the hollow part are brought into contact with each other before the side parts of the hollow part are brought into contact with each other, when at least one of the plural peak portions is subjected to force in a direction intersecting with the array direction from an outside
Data Source
AI summary
A cover member having plural peak portions and plural trough portions, and freely stretched and shrunk in an array direction of the plural peak portions and the plural trough portions or freely bent, the cover member includes: a hollow part formed in each of the plural peak portions, the hollow part being hollowed toward an inner side from a peak of each of the plural peak portions, being formed in a circumferential direction, and having edge parts, a bottom part and side parts located between the edge parts and the bottom part. The edge parts of the hollow part are brought into contact with each other before the side parts of the hollow part are brought into contact with each other, when at least one of the plural peak portions is subjected to force in a direction intersecting with the array direction from an outside.