Centered Cable Guard for Archery Bow Energy Transfer
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Solution Overview
Problem
Existing archery bow designs suffer from inefficiencies in energy transfer and accuracy due to various losses during the drawing and firing process.
Innovation Solution
The archery bow incorporates a cable guard system with a body member and rollers that apply a force to the cables in a lateral direction, optimizing the energy transfer by displacing the cables laterally and improving alignment with the shooting axis, thereby enhancing efficiency and accuracy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If traditional cable guard designs are used, then the bow structure is simple, but energy transfer efficiency is reduced due to misalignment and energy loss
Solution Approach 1:
The cable guard is positioned in the lateral plane rather than aligned with the longitudinal axis, creating a new spatial dimension for cable interaction. This lateral positioning allows the cable guard to apply force perpendicular to the traditional alignment, correcting cable alignment issues without requiring complex longitudinal adjustments.
Solution Approach 2:
The cable guard acts as an intermediary component between the cable and the shooting axis. By introducing this intermediate element that applies lateral force to the cable, the system achieves better energy transfer without requiring direct modification of the cable or bow limb structures.
2Manufacturing precision
If the cable guard applies lateral force to the cable, then alignment with the shooting axis is improved, but the structural complexity of the cable guard increases
Solution Approach 1:
The cable guard operates in the lateral plane, using a different spatial dimension to achieve alignment precision. Instead of attempting to align cables along the longitudinal axis through complex adjustments, the lateral positioning provides a simpler geometric solution for achieving precise alignment with the shooting axis.
Solution Approach 2:
The cable guard structure is asymmetrically positioned relative to the bow limbs, with the lateral plane positioning creating an asymmetric force application point. This asymmetric configuration naturally guides the cable alignment without requiring symmetric complex mechanisms.
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 design improves the energy transfer efficiency and accuracy by minimizing energy loss and ensuring proper alignment of the arrow with the shooting axis, resulting in a more effective and precise projectile launch.
Implementation Method 1
a cable guard arranged to apply a force to the cable at a contact location
Data Source
AI summary
In some embodiments, an archery bow comprises a riser comprising a grip, a bowstring comprising a nocking point, a cable and a cable guard arranged to apply a force to the cable at a contact location. The bow defines a shooting axis, which is positioned in a longitudinal plane and a lateral plane. The longitudinal plane is orthogonal to the lateral plane. The bowstring is positioned in the longitudinal plane. The contact location is positioned on the lateral plane.