Modular Reversible Cam Stop for Archery Bow Draw Length
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Solution Overview
Problem
Existing archery bows lack an efficient and modular adjustable cam stop arrangement that allows for easy adjustment of draw length without requiring multiple modules or complex mechanisms.
Innovation Solution
A reversible draw stop piece with first and second mounting surfaces on a cam, allowing two different draw lengths, and an inner cable positioning piece that presents the power cable to an outer abutment piece to limit the draw length, which can be mounted at various locations on the cam for modular functionality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a one-piece module or pivotal module is used to adjust draw length, then the draw length can be adjusted, but the device complexity increases and requires multiple modules
Solution Approach 1:
The draw stop is divided into an inner cable positioning piece and an outer abutment piece that can be independently positioned and adjusted on the cam, allowing separate optimization of cable presentation and draw length stopping functions
Solution Approach 2:
The cam surface is designed with multiple mounting locations that can accommodate the draw stop components at various positions, enabling a single cam structure to provide multiple draw length adjustments without requiring separate modules
2Adaptability or versatility
If multiple one-piece modules of different sizes are used to set draw length, then different draw lengths can be achieved, but the quantity of parts increases
Solution Approach 1:
The draw stop functionality is segmented into positioning and abutment components that work together on a single cam, eliminating the need for multiple complete modules of different sizes
Solution Approach 2:
The inner cable positioning piece and outer abutment piece are combined in a coordinated arrangement on the same cam, merging multiple functions into a single integrated system rather than requiring separate modules
3Adaptability or versatility
If a pivotal module is used to adjust draw length, then draw length can be changed, but the ease of operation decreases due to complex adjustment mechanisms
Solution Approach 1:
The draw stop components are designed as separate pieces that can be independently positioned and secured on the cam, allowing simple adjustment without complex pivotal mechanisms
Solution Approach 2:
The modular components are designed to be easily installed and adjusted by the user without requiring specialized tools or complex procedures, with the cam surface providing inherent positioning features
Data Source
AI summary
Embodiments of the present disclosure include a two piece modular draw stop system for an archery bow cam including a positioner piece and an abutment piece. The positioner piece defines a groove for a power cable of the archery bow and is arranged on the cam to present the power cable toward the abutment piece upon rotation of the cam. The abutment piece is configured to abut the power cable to impede further rotation of the cam. The abutment piece may be reversible to allow different draw lengths of the bowstring at a selected mounting location.