Fiber-Reinforced Suspension Fork Radial Load Regions
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Solution Overview
Problem
Handlebar-steered suspension forks lack sufficient strength and stiffness, particularly in radial load regions, due to inadequate reinforcement in existing designs.
Innovation Solution
A fiber-reinforced material is selectively wrapped around the radial load regions of the outer tube of the fork, while avoiding the transition regions, with bushings to transmit radial loads and prevent direct contact between inner and outer tubes, enhancing hoop strength and load capacity without excessive weight.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If fiber-reinforced material is wrapped around the entire outer tube, then strength and stiffness are improved, but weight increases excessively
Solution Approach 1:
The fiber-reinforced material is selectively wrapped only around the radial load regions of the outer tube, where reinforcement is most needed, rather than covering the entire tube. This localized approach provides targeted strength enhancement while minimizing additional weight.
Solution Approach 2:
The outer tube is divided into functional zones: radial load regions that require reinforcement and transition regions that do not. The fiber wrapping is segmented to apply only to the radial load regions, creating a differentiated reinforcement strategy that optimizes the strength-to-weight ratio.
2Strength
If fiber-reinforced material is wrapped around radial load regions, then load capacity is improved, but manufacturing complexity increases
Solution Approach 1:
The design identifies specific radial load regions on the outer tube and applies fiber reinforcement only to those locations. This localized reinforcement approach enhances load capacity while keeping the manufacturing process manageable by focusing work on discrete areas rather than the entire component.
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 solution significantly increases the stiffness and load capacity of the fork, reduces wear, and stabilizes bushing performance, providing improved structural integrity and resistance to prying loads.
Implementation Method 1
A fiber-reinforced material is wrapped entirely about at least one of the outer tube radial load regions and not wrapped entirely about the outer tube transition regions
Implementation Method 2
The bushing is configured to transmit radial load from the inner tube to the radial load region of the outer tube
Data Source
AI summary
A handlebar-steered suspension fork that includes an outer tube and an inner tube reciprocally slidable within the outer tube. The outer tube includes at least one radial load region and at least one transition region. A fiber-reinforced material is wrapped about at least one of the outer tube radial load regions and not wrapped about at least one of the outer tube transitions regions.