Bow Tensioner Assembly for Increased Draw Force
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Solution Overview
Problem
Conventional archery bows have a thin handle rise section that limits the tension that can be placed on the bow string and the overall strength of the bow when the arrow is pulled back, necessitating an improved design to enhance pullback capacity and arrow firing strength.
Innovation Solution
An archery bow system featuring a tensioner assembly with elongated bendable members made of hard materials, such as wood, plastic, or metal, which are offset from the main bow and designed to bend with the bow, increasing the curvature and thus the arrow launching strength by distributing force more effectively.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a thin handle rise section is used in conventional bows, then the bow structure remains simple and lightweight, but the tension capacity and overall strength are limited
Solution Approach 1:
The bow is divided into functional segments: the main bow structure and the separate tensioner assembly. The tensioner acts as an independent component that can be attached to or integrated with the main bow, allowing the tension-enhancing function to be separated from the basic bow structure. This enables increased tension capacity without completely redesigning the entire bow.
Solution Approach 2:
The tensioner assembly extends the bow's functional capacity in a new dimensional direction by adding offset sections that protrude from the main bow's plane. The upper and lower offset sections create additional leverage arms perpendicular to the main bow's curvature, effectively increasing the tension capacity without requiring the main bow itself to be thicker or more complex.
2Strength
If the handle rise section is thickened to increase strength, then the tension capacity improves, but the bow becomes heavier and less maneuverable
Solution Approach 1:
The strength-enhancing function is segmented into a separate tensioner assembly rather than being integrated into the main bow structure. This allows the bow to maintain its original lightweight construction while the add-on tensioner provides the necessary strength enhancement through its offset geometry and bending mechanics.
3Power
If offset sections are added to increase curvature and arrow launching strength, then the force vector in horizontal direction is enhanced, but the device complexity increases
Solution Approach 1:
The tensioner assembly merges multiple functions into a single integrated component: it provides structural support, generates mechanical advantage through offset sections, and directly contributes to arrow launching power. By combining these functions into one assembly rather than using separate components, the design achieves enhanced power without proportionally increasing overall complexity.
Solution Approach 2:
The tensioner utilizes curved geometry in its offset sections that bend in coordination with the bow's natural curvature. This curved design optimizes the mechanical advantage and force distribution, enabling enhanced arrow launching strength through geometric efficiency rather than through adding excessive structural complexity.
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 tensioner assembly enhances the pullback capacity and arrow firing strength by increasing the force vector in the horizontal direction, providing a more powerful and stable bow and arrow system.
Implementation Method 1
an elongated bendable member made of a hard material, the first tensioner including a middle section, an upper section, and a lower section, wherein the middle section of the first tensioner is coupled the main bow inner projection opposite the main bow... and wherein bending of the main bow causes the first tensioner to bend
Data Source
AI summary
An archery bow for a bow and arrow system comprises a main bow with a tensioner assembly designed to increase the pullback capacity and/or arrow firing strength of the bow. The tensioner assembly includes a first tensioner comprising an elongated bendable member made of a hard material. A middle section of the first tensioner is coupled to a main bow inner projection, wherein at least portions of the upper and lower sections of the first tensioner are offset from an inner side of the main bow, and wherein bending of the main bow causes the first tensioner to bend.