Adjustable Broadhead Cutting Diameter via Rotating Blades
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Solution Overview
Problem
Conventional broadheads lack the ability to adjust the cutting diameter of their blades, limiting user flexibility and effectiveness in various hunting and tactical applications.
Innovation Solution
A broadhead design featuring a shaft with longitudinally extending recesses and blades with pivotally attached distal ends and adjustable cutting surfaces, where a collar engages with notches along the blades' edges to adjust the cutting diameter by rotating the blades about their distal ends.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional broadheads are used with fixed blade configuration, then the structure is simple and reliable, but the user cannot adjust the cutting diameter
Solution Approach 1:
The broadhead blades are designed to be rotatable about their distal ends, transforming the fixed blade configuration into a dynamic system where the cutting diameter can be adjusted by rotating the blades to different positions. The collar mechanism enables this dynamic adjustment while maintaining structural integrity.
Solution Approach 2:
The broadhead is segmented into distinct functional components: the shaft, multiple blades with notches, and a collar. This segmentation allows independent adjustment of blade positions while maintaining the overall structural coherence of the broadhead assembly.
2Ease of operation
If the cutting diameter is fixed in conventional broadheads, then the manufacturing process is simple, but the user flexibility is limited
Solution Approach 1:
Multiple notches are pre-formed on each blade at different positions along the proximal edge, preparing the blade for multiple possible cutting diameter configurations. This preliminary preparation allows the user to select the desired configuration without complex manufacturing processes.
Solution Approach 2:
The cutting diameter parameter can be changed by rotating the blades to different angular positions, where each position corresponds to a different effective cutting diameter. This parameter adjustment is achieved through simple mechanical rotation rather than complex manufacturing variations.
3Adaptability or versatility
If multiple cutting diameter positions are provided, then the versatility is enhanced, but the device complexity increases
Solution Approach 1:
The collar acts as an intermediary mechanism that simplifies the adjustment process. By engaging with the notches on the blades, the collar provides a simple rotational interface that controls the position of multiple blades simultaneously, reducing the overall mechanism complexity despite offering multiple adjustment positions.
Data Source
AI summary
A broadhead having an adjustable cutting diameter includes a collar and a plurality of adjustable blades having a cutting edge and a plurality of notches on a proximal or trailing edge of each blade. The collar and each notch on the proximal edge of each blade are configured for engagement or coupling with each other. The cutting diameter of the broadhead is adjusted by changing the notch that engages with the collar.