Drop Away Arrow Rest with Delayed Release Mechanism
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Solution Overview
Problem
Existing drop away arrow rests for archery bows do not prevent movement of the launcher during drawing, firing, or let down of the bow, and lack a delayed dropping mechanism to optimize arrow support during launch.
Innovation Solution
A drop away arrow rest with a main housing, support assembly, spring-biased rest element, lock assembly, and actuator system that uses a cord connected to the bow's moving elements to lock and release the rest element, preventing movement during bow string operations and providing a delayed dropping mechanism for enhanced arrow support.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional drop away arrow rest is used, then the arrow can be supported during launch, but the launcher moves during drawing, firing or let down of the bow string
Solution Approach 1:
The lock assembly is engaged in advance to secure the rest element in the support position before the bow string is drawn or fired. This preliminary locking action prevents any movement of the launcher during subsequent bow operations, resolving the contradiction by establishing stability before the operational sequence begins.
Solution Approach 2:
The cord acts as an intermediary element that connects the moving element of the bow to the actuator. When the bow string is drawn or fired, the cord transmits this motion to trigger the actuator, which then releases the lock assembly. This intermediary mechanism allows the launcher to remain stable during normal operations while automatically enabling drop-away functionality during firing.
2Speed
If the launcher drops immediately after release of the bow string, then it clears the arrow vanes quickly, but it does not provide maximum support for the arrow during launch
Solution Approach 1:
The system delays the dropping action until the optimal moment just before arrow launch. The lock assembly remains engaged throughout the drawing and firing sequence, providing continuous support. The delay mechanism ensures the launcher stays in the support position for maximum arrow support time, then executes a high-speed drop at the precise moment needed to clear the vanes.
Solution Approach 2:
The rest element transitions from a static locked position to a dynamic dropping motion. The actuator system controls this transition, keeping the launcher stationary during the support phase and then enabling rapid movement during the drop phase. This dynamic control optimizes both support duration and dropping speed.
3Reliability
If a lock assembly and actuator system are added to prevent launcher movement, then launcher stability is improved, but device complexity increases
Solution Approach 1:
The arrow rest is divided into distinct functional segments: the rest element for supporting the arrow, the lock assembly for securing the rest element, and the actuator for releasing the lock. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The system uses the bow's own moving elements to trigger the actuator through the cord connection. This self-service mechanism eliminates the need for external triggers or complex control systems, as the firing sequence itself automatically activates the drop-away function, reducing overall device complexity while maintaining reliability.
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 solution effectively prevents launcher movement during bow string operations and optimizes arrow support by ensuring the launcher remains stationary during drawing and firing, while providing a delayed high-speed dropping motion to clear arrow vanes, improving arrow launch performance.
Implementation Method 1
a spring biasing the rest element
Implementation Method 2
the cord moves when the moving element moves, the cord connected such that when the moving element moves during firing of the arrow, the actuator dislodges the lock assembly from the lock due to release of tension on the cord
Data Source
AI summary
A drop away arrow rests which prevents movement of the rest element during the drawing, firing or let down of an archery bow. A drop away arrow rest that provides an optimized delay function for the dropping of the rest element after release of the bow string when firing the arrow to provide maximum support for the arrow during the launch with a last second, high speed dropping motion to clear the vanes on the arrow.