Bowstring Release Device Adjustable Jaw Gap Mechanism
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Solution Overview
Problem
Existing bowstring release devices suffer from manufacturing tolerance errors and wear, leading to inconsistent performance and increased costs due to the need for precise assembly and rejection of devices that do not meet minimum requirements for holding substantial pull forces.
Innovation Solution
An adjustable bowstring release mechanism with a housing, pivotally connected jaws, a trigger section, and an adjustment portion that allows for adjusting the gap between jaws to ensure proper retention and release of the bowstring, accommodating variations in manufacturing tolerances and wear over time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If fixed gap between jaws is used, then manufacturing is simpler, but cumulative tolerance errors cause gap to become too large to hold bowstring properly
Solution Approach 1:
The gap between the jaws is made adjustable through a mechanism involving an adjustment member that can be rotated to move the jaws relative to each other. This dynamic adjustment capability allows the gap to be modified to compensate for cumulative tolerance errors in manufacturing, ensuring proper bowstring retention while maintaining manufacturing simplicity.
Solution Approach 2:
The physical parameter of the gap distance between jaws is made variable through the adjustment mechanism. By allowing the gap parameter to be changed within a range, the device can accommodate variations in manufacturing tolerances and wear over time, maintaining functional performance without requiring extremely tight manufacturing specifications.
2Manufacturing precision
If tight manufacturing tolerances are enforced, then gap consistency is improved, but manufacturing costs and labor increase due to rejections
Solution Approach 1:
The adjustable gap mechanism allows the device to compensate for manufacturing variations after assembly, eliminating the need for extremely tight tolerances during manufacturing. This reduces rejection rates and manufacturing costs while maintaining consistent functional performance.
Solution Approach 2:
The adjustment mechanism allows the device to self-correct gap inconsistencies caused by manufacturing tolerances and wear. Users can adjust the gap to maintain proper bowstring retention, making the device self-sufficient in compensating for manufacturing variations without requiring expensive rework or replacement.
3Device complexity
If fixed jaw configuration is used, then device complexity is reduced, but wear causes device to become inoperative in the field
Solution Approach 1:
The adjustable mechanism adds minimal complexity while significantly improving reliability. The adjustment member and associated components allow the gap to be modified to compensate for wear over time, extending the device's operational life in the field without requiring complex redesign.
Solution Approach 2:
The adjustment mechanism provides a feedback loop where users can monitor the performance of the bowstring retention and make real-time adjustments to compensate for wear. This feedback capability maintains reliable operation throughout the device's service life despite gradual degradation from repeated use.
Data Source
AI summary
A bowstring release mechanism includes first and second jaws pivotally connected to a housing with a trigger section operably associated with the jaws for moving the jaws between open and closed positions. The jaws include opposing faces that are in a juxtaposed relationship when the release mechanism is in a closed position. Due to deviations in manufacturing tolerances and wear, a gap between the jaw faces may vary in size. To that end, an adjustment portion is operably associated with the trigger and jaws for precisely adjusting the size of the gap. A second adjustment portion for adjusting the sensitivity of the trigger section is also provided.