Archery Sight Pin Adjustment Mechanism for Arrow Speed Trajectory
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Solution Overview
Problem
Conventional archery bow sights require individual adjustment of sight pins, which is time-consuming and does not account for the speed of the arrow, and they can add undesirable force/moment distribution to the bow, limiting their effectiveness and compactness.
Innovation Solution
A compact archery bow sight with a sight pin adjustment mechanism that simultaneously adjusts all sight pins according to a predetermined trajectory formula related to the arrow's speed, using a multi-pitch lead screw system and an arrow speed calibration scale, allowing for precise alignment of sight pins to optimize arrow trajectory.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If sight pins are adjusted individually, then each sight pin can be precisely positioned, but the adjustment process becomes time-consuming and does not account for arrow speed
Solution Approach 1:
The patent combines multiple individual sight pin adjustments into a single simultaneous adjustment mechanism. The sight pin adjustment mechanism allows all sight pins to be adjusted at the same time through one operation, eliminating the need for separate adjustment steps for each pin while maintaining precise positioning control.
Solution Approach 2:
The adjustment mechanism serves multiple functions simultaneously: it adjusts all sight pins, accounts for arrow speed through the trajectory formula, and maintains precise positioning. This multi-functional approach resolves the contradiction by achieving precise positioning without sacrificing time efficiency.
2Manufacturing precision
If sight pins are adjusted individually, then positioning can be controlled, but the trajectory adjustment does not account for arrow speed
Solution Approach 1:
The patent introduces a dynamic adjustment mechanism that adapts to arrow speed through the trajectory formula. The sight pin adjustment mechanism is designed to automatically account for varying arrow speeds, making the system dynamic and adaptable rather than static and fixed.
Solution Approach 2:
The trajectory formula incorporates arrow speed as a variable parameter, allowing the sight pin positions to be adjusted based on the actual arrow speed. This parameter change enables the system to adapt to different shooting conditions while maintaining trajectory accuracy.
3Ease of operation
If a larger sight device is used, then adjustment capability is improved, but it adds undesirable force/moment distribution to the bow
Solution Approach 1:
The sight pin adjustment mechanism is nested within a compact housing structure. The multi-pitch lead screw mechanism is integrated into the housing, allowing the adjustment functionality to be contained within a small space, thus avoiding adding excessive force or moment to the bow while maintaining full adjustment capability.
Solution Approach 2:
The patent uses a multi-pitch lead screw mechanism that operates in a compact dimensional space. By utilizing the lead screw geometry, the adjustment mechanism achieves full adjustment capability within a compact footprint, avoiding the need for a larger device that would impose unwanted forces on the bow.
4Force
If a compact sight device is used, then force/moment distribution on bow is minimized, but adjustment precision may be compromised
Solution Approach 1:
The patent replaces conventional mechanical adjustment mechanisms with a multi-pitch lead screw system that provides precise control in a compact space. The lead screw mechanism offers superior precision and control compared to traditional mechanical adjustments, achieving accurate sight pin positioning without requiring a larger device structure.
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
Enables simultaneous adjustment of all sight pins to accurately direct arrows along a predetermined trajectory, minimizing additional force on the bow and improving shooting accuracy while maintaining a compact design.
Implementation Method 1
The sight pin adjustment mechanism comprises a shaft that is supported on the housing and has a plurality of lead screw portions, each of which is coupled with a respective sight pin. The pitch of each lead screw portion is determined according to the predetermined trajectory formula, to enable simultaneous adjustment of respective sight pins according to the predetermined trajectory formula.
Data Source
AI summary
A new and useful device and method is provided, for sighting an arrow being shot from a bow. A sight pin adjustment mechanism is associated with a plurality of sight pins, and is uniquely configured to be manipulated to simultaneously adjust each of the sight pins according to a predetermined trajectory formula that is at least partially related to the speed of an arrow as it leaves the bow. In one preferred form of the present invention, the sight includes an arrow speed calibration scale that is selectively moveable relative to an archery bow, and the plurality of sight pins are simultaneously moveable relative to the arrow speed calibration scale, and according to the predetermined trajectory formula. Also in a preferred form of the present invention, the sight pin adjustment mechanism comprises a shaft that is supported on the housing and has a plurality of lead screw portions, each of which is coupled with a respective sight pin. The pitch of each lead screw portion is determined according to the predetermined trajectory formula, to enable simultaneous adjustment of respective sight pins according to the predetermined trajectory formula.