Fish Harvesting Head Barb Retention and Replacement Mechanism
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Solution Overview
Problem
Existing bowfishing arrowheads with rotatable barbs often experience tip loosening, leading to fish release or loss due to the barb rotating to a fish releasing position, and the barb is not easily replaceable if damaged.
Innovation Solution
A fish harvesting head with a barb receiving slot and a piercing tip retaining device that allows for the easy replacement of the barb device and prevents accidental loosening of the piercing tip, enabling secure attachment and conversion to a practice point or removal from a shot object.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the tip is threaded for attachment, then the barb can be contained, but the tip loosens during use causing fish loss
Solution Approach 1:
The tip is divided into modular sections with internal threading, allowing the barb-containing section to be segmented from the main tip body. This segmentation enables independent retention mechanisms for each section, preventing overall tip loosening while maintaining ease of assembly and disassembly when needed.
Solution Approach 2:
Retention features such as locking tabs or friction-fit interfaces are pre-configured within the tip structure before use. These preliminary retention mechanisms engage automatically when the tip is inserted, preventing loosening during operation without requiring additional actions from the user during fishing.
2Reliability
If the barb is confined in a hole, then the barb is contained, but damage to the barb destroys the entire head
Solution Approach 1:
The barb housing is segmented into a removable insert that can be independently accessed and replaced. The barb resides in a separate compartment within the tip that can be opened without destroying the main arrowhead body, allowing easy barb replacement while maintaining secure containment during use.
Solution Approach 2:
The barb is designed as a replaceable component that can be discarded when damaged and recovered/replaced without affecting the main arrowhead structure. The tip incorporates a retention mechanism that holds the barb securely during fishing but allows intentional removal for replacement or conversion to practice points.
3Reliability
If the tip is securely attached, then fish retention is improved, but conversion to practice point becomes difficult
Solution Approach 1:
The tip attachment system incorporates dynamic retention features that provide strong holding force during fishing operations but can be easily released when needed. Threaded connections with lock washers or bayonet-style interfaces allow the tip to be securely attached for fish retention yet quickly removed for conversion to practice points or different barbs.
Solution Approach 2:
The tip design incorporates universal attachment features that work with multiple types of barbs and practice points. The standardized threading and retention mechanism allow the same tip body to accommodate different functional attachments, enabling easy conversion between fishing mode and practice mode while maintaining secure attachment in both configurations.
Data Source
AI summary
A fish harvesting head with a rotatable barb device that is held in place with a piercing tip and is configured to move between fish piercing, fish retaining and fish releasing positions. The fish harvesting head is formed from a fish harvesting body having a barb receiving slot positioned in the forward portion of the fish harvesting body that extends along a longitudinal axis of the fish harvesting body. The barb receiving slot enables the barb to be quickly replaced or removed. The fish harvesting head may also include a piercing tip retaining device positioned in the barb receiving slot and in contact with an inner surface of the piercing tip for increasing resistance to movement of the piercing tip relative to the fish harvesting body and prevent accidental loosening of the tip.