Archery Bow Limb Cover Structure for Vibration and Noise Damping
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Solution Overview
Problem
There is a need for improvements in the functionality and performance of archery bow limbs, particularly in reducing damage from mishandling, dampening vibrations, and minimizing noise during projectile launch.
Innovation Solution
Incorporating a cover member onto the limbs of an archery bow, which can be disposed laterally adjacent to the cam, with a ratio of limb length to cover member length ranging from 5:1 to 1.5:1, and featuring a pattern or protrusions to attenuate acoustic waves and absorb energy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a cover member is added to the limb, then protection against damage and vibration damping is improved, but device complexity increases
Solution Approach 1:
The cover member serves as an intermediary protective layer between external objects and the limb, absorbing impact forces and preventing direct damage to the structural limb components
Solution Approach 2:
The cover member is implemented as a flexible or semi-rigid shell that conforms to the limb's shape, providing protection while allowing the limb to flex during bow operation
2Object-generated harmful factors
If a cover member is added to the limb, then vibration damping is improved, but device complexity increases
Solution Approach 1:
The cover member converts harmful vibration energy into beneficial dampening effects, where the material properties of the cover layer dissipate vibrational energy that would otherwise damage the limb or create noise
Solution Approach 2:
The cover member changes the physical parameters of the limb surface, adding mass and damping characteristics that alter the vibration response of the limb system
3Object-generated harmful factors
If a cover member is added to the limb, then noise reduction is improved, but device complexity increases
Solution Approach 1:
The cover member converts harmful noise generated during projectile launch into dampened vibrations that are absorbed by the cover layer's material properties, reducing acoustic emission
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 enhances the durability and performance of archery bow limbs by mitigating damage, dampening vibrations, and reducing noise during projectile launch.
Implementation Method 1
dampening vibrations
Implementation Method 2
attenuate acoustic waves
Data Source
AI summary
An archery bow can include a limb assembly having a limb and a cover member. The limb includes a distal end and a proximal end. The cover member can be coupled to the limb between the distal and proximal ends. The limb can have a region disposed laterally adjacent to a cam of the archery bow. The cover member can be at least partially disposed on the region. The limb can define a first length and the cover member can define a second length. The first length and the second length can define a ratio. In some examples, the limb and/or the cover member can include a plurality of protrusions extending therefrom.