Bicycle Fork Sheath With Removable Resonator for Vibration Damping
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Solution Overview
Problem
Existing bicycle designs face challenges in integrating a large vibration damping system into the fork without compromising mechanical strength and in replacing a defective resonator without replacing the entire fork, which is economically disadvantageous.
Innovation Solution
A structural element with a tubular sheath featuring internal cavities that house a removable dynamic resonator, where the inner partition contributes to mechanical strength and allows for interchangeable damping systems, made from composite materials like carbon fibers and resin, enabling easy replacement and adaptation to road conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a large vibration damping system is integrated into the fork, then vibration filtration capability is improved, but the mechanical strength of the fork is compromised
Solution Approach 1:
The fork is divided into multiple sheaths, with the first sheath containing the vibration damping system and the second sheath providing structural support. This segmentation allows the damping system to be isolated in a dedicated space without compromising the overall mechanical strength of the fork structure.
Solution Approach 2:
The vibration damping system is nested within the first sheath of the fork, which itself is nested within the overall fork structure. The inner partition creates a housing that contains the damping system, effectively nesting the damping components within the fork's structural framework without weakening it.
2Reliability
If a defective resonator needs to be replaced, then vibration damping performance can be restored, but replacing the entire fork is economically disadvantageous
Solution Approach 1:
The resonator is extracted as a separate, removable component from the fork structure. The resonator can be detached from the first sheath and replaced independently, allowing users to replace only the defective resonator rather than the entire fork, thus reducing replacement costs.
Solution Approach 2:
The fork structure is designed with dynamic accessibility, where the resonator can be removed and reinstalled through openings in the sheaths. This dynamic design enables easy maintenance and replacement of the resonator without permanent integration, facilitating cost-effective repairs.
3Weight of moving object
If the fork structure is made with composite materials to reduce weight, then weight is reduced, but the complexity of integrating a removable resonator increases
Solution Approach 1:
The composite fork is segmented into multiple sheaths with distinct functions. The first sheath is designed specifically to accommodate the resonator with appropriate openings and mounting features, while the second sheath provides structural support. This segmentation simplifies the integration of the removable resonator within the composite structure.
Solution Approach 2:
The first sheath serves multiple functions: it provides structural support as part of the fork, houses the vibration damping resonator, and facilitates resonator removal and replacement through integrated openings. This multi-functionality reduces the need for additional complex components to enable resonator replacement.
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 provides a mechanically strong bicycle structure with optimal vibration filtration and absorption capabilities, allowing for the selection of resonator parameters and easy replacement, enhancing comfort, safety, and performance without the need for a new fork.
Implementation Method 1
a vibration amplification effect associated with resonance phenomena occurs
Implementation Method 2
The vibrations which the wheel is subjected to are transmitted to the blade, via the connection area with the fork, in the form of oscillations
Implementation Method 3
the strip in contact with the blade is subjected to tangential forces from the oscillations of the blade that cause shear deformation and therefore dissipation of vibration energy
Implementation Method 4
at least one strip made of a second substantially elastic material
Data Source
AI summary
A structural element of a cycle includes at least one tubular sheath provided with an outer wall delimiting, with an inner partition, at least one cavity in which a vibration damping system is accommodated. The sheath includes at least two internal cavities, each delimited between the inner partition and the outer wall, one of the internal cavities forming a housing in which the damping system is accommodated and attached.