Bicycle Shock End Mount With Elastomer for High-Frequency Vibration
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Solution Overview
Problem
Existing bicycle suspension systems face challenges in effectively absorbing high-frequency vibrations and maintaining comfort due to the need to overcome static friction in shock absorbers, leading to delayed movement and transmission of vibrations to the rider.
Innovation Solution
The introduction of shock end mounts with elastomeric members that enable relative movement between frame attachment portions before the breakaway force of the shock absorber is reached, allowing for quicker absorption of vibrations and reducing the transmission of high-frequency vibrations to the rider.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a shock absorber is used to cushion impacts and vibrations, then rider comfort is improved, but static friction causes delayed movement and high-frequency vibrations are not effectively absorbed
Solution Approach 1:
The suspension system is divided into two independent components: a shock absorber for low-frequency impact absorption and an elastomeric member for high-frequency vibration absorption. This segmentation allows each component to specialize in specific frequency ranges, eliminating the delay caused by static friction in the shock absorber while maintaining impact cushioning capabilities.
Solution Approach 2:
The elastomeric member acts as an intermediary element between the frame and the shock absorber. It provides a compliant connection that absorbs high-frequency vibrations before they reach the shock absorber, allowing the shock absorber to focus on low-frequency impact events without being hindered by static friction.
2Object-affected harmful factors
If the shock absorber stroke length is increased to improve vibration absorption, then comfort is enhanced, but the size of the suspension component increases
Solution Approach 1:
The vibration absorption function is segmented between two components: the shock absorber handles low-frequency, large-amplitude impacts, while the elastomeric member handles high-frequency, small-amplitude vibrations. This allows the shock absorber to maintain a compact stroke length while the overall system achieves superior vibration absorption across all frequencies.
Solution Approach 2:
The elastomeric member changes the effective stiffness parameter of the suspension system at different frequency ranges. It provides high stiffness for high-frequency vibrations (absorbing them without requiring large travel) while allowing the shock absorber to provide low stiffness for low-frequency impacts, optimizing performance without increasing size.
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
This solution enhances the comfort and confidence of the rider by improving shock absorption and reducing vibrations felt during riding, while maintaining the size and stroke length of the shock absorber.
Implementation Method 1
The shock end mount includes an elastomeric member to enable relative movement between the shock absorber and the first frame attachment portion
Implementation Method 2
a shock absorber including a spring and a damper configured in a telescoping arrangement
Implementation Method 3
a shock absorber including a spring and a damper configured in a telescoping arrangement
Data Source
AI summary
Example bicycle suspension components are described herein. An example suspension component includes a spring and a damper configured in a telescoping arrangement. The shock absorber has a first end and a second end opposite the first end. The second end has an eyelet. The example suspension component also includes a shock end mount coupled to the first end of the shock absorber. The shock end mount includes a frame bracket. The frame bracket includes a first frame attachment portion to be coupled to a frame of the bicycle. The eyelet on the second end of the shock absorber defines a second frame attachment portion to be coupled to the frame of the bicycle. The shock end mount includes an elastomeric member to enable relative movement between the shock absorber and the first frame attachment portion. The elastomeric member is disposed outside of a region between the first frame attachment portion and the second frame attachment portion.