Broadhead Retaining Clip for Blade Deployment
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Solution Overview
Problem
Existing broadheads in archery struggle to maintain cutting blades in a closed position during flight and storage, often relying on o-rings or ring-shaped elements that may not securely retain the blades before impact, leading to inconsistent deployment and performance.
Innovation Solution
A mechanical broadhead design featuring a rotatable retaining clip with lateral arms that engages and retains the blades in a closed position before impact, using a hub and camming surfaces to ensure blades deploy consistently upon target contact, with optional break-away mechanisms for efficient expansion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a circular or ring-shaped element (o-ring) is used to hold the blades, then the blades can be maintained in a closed position, but the retention reliability is insufficient leading to inconsistent deployment
Solution Approach 1:
The retaining clip is divided into a body and multiple lateral arms that can independently engage with the blades. This segmentation allows each arm to securely hold its corresponding blade, improving overall retention reliability while maintaining a relatively simple overall structure.
Solution Approach 2:
Instead of using a continuous ring-shaped element that passes through the blades, the invention uses a clip with lateral arms that extend from a central body to engage the blades from the side. This inverted approach provides more secure engagement points and improves retention reliability.
2Reliability
If the blades are maintained in a closed position during flight, then aerodynamic performance is improved, but the deployment consistency is poor upon impact
Solution Approach 1:
The retaining clip is designed with a break-away feature that预先 weakens the retention mechanism. Upon impact, the force causes the clip to break or disengage, automatically releasing the blades for deployment. This preliminary anti-action ensures consistent deployment by pre-planning the release mechanism.
Solution Approach 2:
The blades are pre-positioned in a closed configuration and held by the retaining clip during flight. The clip's structure and break-away design are prepared in advance to ensure that upon impact, the blades will consistently deploy in the intended manner.
3Reliability
If a rotatable retaining clip with lateral arms is used, then blade retention is improved, but the device complexity increases
Solution Approach 1:
Multiple retention functions are merged into a single rotating clip assembly with lateral arms. The clip body and arms work together as an integrated unit to retain multiple blades simultaneously, improving reliability without proportionally increasing overall complexity.
Solution Approach 2:
The rotating retaining clip serves multiple functions: it holds the blades in closed position during flight, can be rotated for engagement and disengagement, and incorporates a break-away mechanism for automatic deployment. This multi-functionality improves retention reliability while keeping the added complexity manageable.
Data Source
AI summary
Various embodiments of the present disclosure include a mechanical broadhead for use with an archery bow and arrow. In certain arrangements, a broadhead is provided with a retaining clip that maintains the cutting blades in a retracted or closed position during flight of the arrow. Upon target contact, the blades expand outwardly from the closed position.