Archery Bow Limb Spacing Adjustment With Threaded Axle
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Solution Overview
Problem
Existing archery bows lack precise and adjustable systems for limb positioning and alignment, which impact accuracy and efficiency.
Innovation Solution
An archery bow with a limb assembly featuring an axle assembly that allows for adjustable limb positioning through threaded connections and a locking mechanism, enabling precise adjustment of limb distance and alignment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a fixed connection is used between the axle assembly and the first limb, then the connection is simple and reliable, but the limb positioning cannot be adjusted
Solution Approach 1:
The connection system transitions from a static fixed connection to a dynamic adjustable connection. The axle assembly incorporates threaded connections that allow the limb position to be changed from a fixed state to an adjustable state, enabling the system to adapt to different shooting requirements while maintaining connection reliability through proper fastening mechanisms.
Solution Approach 2:
The invention changes the positional parameter of the limb relative to the axle assembly by introducing threaded connections. The limb can be positioned at different distances from the axle by rotating the threaded fasteners, thereby adjusting the bow's geometry to optimize performance for different shooting conditions without changing the overall structure.
2Manufacturing precision
If a threaded connection is used between the axle assembly and the second limb, then the limb distance can be adjusted, but the connection complexity increases
Solution Approach 1:
The invention replaces complex mechanical adjustment mechanisms with a simpler threaded fastening system. Instead of using cam locks, lever mechanisms, or hydraulic systems for limb adjustment, the patent uses standard threaded connections that provide precise adjustment through simple rotational motion, reducing overall system complexity while maintaining manufacturing precision.
3Measurement precision
If the axle is rotated to adjust limb distance, then the limb positioning is precise, but the first limb position remains fixed which may limit adjustment range
Solution Approach 1:
The invention segments the limb connection system into two independent adjustable connections - one for the first limb and one for the second limb. Each limb can be adjusted independently through its own threaded connection mechanism, allowing for finer precision in positioning each limb separately while providing greater overall flexibility in achieving different bow geometries and draw characteristics.
Data Source
AI summary
In some embodiments, an archery bow comprises a limb assembly comprising a first limb and a second limb, the second limb comprising limb threads. An axle assembly is supported by the first limb and the second limb. The axle assembly comprises an axle comprising axle threads. A first connection between the axle assembly and the first limb comprises a fixed connection. A second connection between the axle assembly and the second limb comprises the limb threads engaged with the axle threads. Rotation of the axle with respect to the limb assembly adjusts a distance between the first limb and the second limb.