Spring Archery Bow String Suppressor Vibration Damping
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Solution Overview
Problem
Existing string suppressors for archery bows are not cost-effective and do not adequately address noise and vibration issues, as they rely on solid rubber bumpers or miniature shock absorbers that only partially dampen the vibrations and noise.
Innovation Solution
A spring suppressor system comprising a durable rubber bumper, piston rod, housing, compression spring, and end plug, which is adjustably mounted to pre-load the bowstring, reducing oscillation and noise by using a minimal number of components and applying pressure to the bowstring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If solid rubber bumpers or miniature shock absorbers are used to dampen string vibration, then noise and vibration are reduced to some extent, but the device becomes more expensive and less effective
Solution Approach 1:
The patent extracts the essential function of vibration damping from complex shock absorber assemblies and implements it through a simple rubber bumper component. By removing unnecessary mechanical complexity and retaining only the core damping function, the design achieves effective noise and vibration reduction at lower cost and simpler construction.
Solution Approach 2:
The patent employs a simple rubber bumper that can be easily manufactured and replaced, avoiding the need for expensive, complex shock absorber assemblies. The rubber material provides sufficient damping functionality while maintaining cost-effectiveness and ease of replacement if needed.
2Object-affected harmful factors
If solid rubber bumpers are placed in the path of the bowstring, then some vibration damping is achieved, but the bowstring strikes the bumper multiple times causing repeated vibration
Solution Approach 1:
The patent incorporates a rubber bumper that provides cushioning before the string completes its oscillation cycle. The rubber material absorbs impact energy when the string first strikes it, reducing the intensity of subsequent rebounds and extending the duration over which vibrations occur, thereby more effectively damping the overall vibration sequence.
Solution Approach 2:
The patent changes the physical parameters of the string-suppressor interface by using rubber material with specific damping properties. The rubber's viscoelastic characteristics modify the interaction between the string and suppressor, transforming the rigid impact into a more gradual energy absorption process that extends the damping action over multiple oscillation cycles.
3Object-affected harmful factors
If a spring and rubber balls combination is used to absorb noise and shock, then vibration absorption improves, but the device becomes more complex and expensive
Solution Approach 1:
The patent merges the functions of the spring and rubber balls into a single integrated rubber bumper component. This unified design combines the shock-absorbing capability of springs with the noise-damping properties of rubber, achieving the same vibration absorption效果 through a simpler, more cost-effective single-component structure.
Solution Approach 2:
The rubber bumper serves multiple functions simultaneously: it acts as a shock absorber, a noise damper, and a vibration reducer. By making the single component multi-functional, the patent eliminates the need for separate spring and rubber ball elements, thereby reducing device complexity and cost while maintaining comprehensive vibration absorption performance.
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 spring suppressor effectively reduces bowstring oscillation and noise, providing a more efficient and cost-effective solution compared to prior art, while maintaining a compact and lightweight design.
Implementation Method 1
a compression spring (140) and an end plug (150). The bumper is preferably fabricated from a durable rubber. The piston includes a bumper portion, a neck portion and a tail portion
Implementation Method 2
The bumper is preferably fabricated from a durable rubber
Data Source
AI summary
The spring suppressor preferably includes a housing, a piston rod, a compression spring and an end plug. The piston includes a bumper portion, a neck portion and a tail portion. The housing includes a bumper hole, a piston bore and a cap thread. The piston bore is formed through substantially a length of the housing. The bumper hole is sized to slidably receive an outer diameter of the bumper portion. The cap thread is formed in an entrance of the piston bore to threadably receive the end plug. The piston is pre-loaded by the compression spring. The end plug is threaded into an end of the piston bore to retain the compression spring and the piston rod. A second embodiment of the string suppressor preferably includes the bumper, the piston rod, the compression spring, a housing and an end rod.