Jacketed Archery Arrow Insert with Torque Dissipation Rod
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Solution Overview
Problem
Traditional archery arrow inserts are vulnerable to breakage due to side impacts, especially when a significant moment arm occurs, as they lack sufficient material at the connection point between the arrow shaft and the screw-in point, leading to potential breakage and increased costs and unrecovered game during hunting.
Innovation Solution
A jacketed archery arrow insert system is introduced, featuring an internally attached torque dissipation rod insert and an externally attached tubular sleeve that strengthens the arrow shaft, allowing it to withstand larger forces without breakage by dissipating torsional stress from side impacts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If a traditional one-piece insert is used to attach the screw-in point to the arrow shaft, then the arrow can be assembled easily, but the connection point becomes vulnerable to breakage under side impact forces
Solution Approach 1:
The insert is divided into two separate components: a one-piece insert glued into the arrow shaft and a torque dissipation rod threaded into the insert. This segmentation allows each component to perform its specific function - the one-piece insert provides structural integration while the torque dissipation rod absorbs torsional forces from side impacts, preventing breakage at the connection point
Solution Approach 2:
The system combines different materials and structural forms - the one-piece insert (typically metal or composite) bonded to the arrow shaft with adhesive, and the torque dissipation rod (metal) threaded into the insert. This composite construction creates a multi-material assembly that leverages the strengths of each material to resist both axial and torsional loads
2Speed
If the arrow shaft has a smaller outer diameter for better aerodynamics, then flight performance improves, but the connection point has even less material to resist breakage
Solution Approach 1:
The torque dissipation rod extends axially beyond the one-piece insert, creating an extended connection structure that increases the moment arm for force distribution. This dimensional extension allows the system to dissipate torsional forces over a longer distance, compensating for the reduced material availability in smaller diameter shafts
3Device complexity
If no additional protective structure is added to the insert, then the device complexity remains low, but the arrow shaft is vulnerable to breakage from side impacts
Solution Approach 1:
The torque dissipation rod acts as an intermediary component between the screw-in point and the arrow shaft. It absorbs and dissipates torsional forces that would otherwise be transmitted directly to the vulnerable connection point, serving as a protective mediator that increases reliability without significantly complicating the overall structure
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 system effectively protects the arrow shaft from breakage, enhancing reliability and reducing costs by providing greater protection against side impacts, ensuring successful hunting and minimizing lost game.
Implementation Method 1
torque dissipation rod insert 8...dissipating torsional stress from side impacts
Implementation Method 2
torque dissipation rod insert 8...withstand larger forces without breakage by dissipating torsional stress
Data Source
AI summary
A jacketed archery arrow insert system for an arrow includes a sleeve, a torque dissipation rod insert, and an arrow shaft. The torque dissipation rod insert includes a collar section, a first tail section, and a second tail section. The collar section and the second tail section are oppositely positioned of each other about the first tail section. The collar section is adjacently connected and concentrically positioned to the first tail section. The second tail section is adjacently connected and concentrically positioned to the first tail section. The second tail section is internally mounted to a shaft body of the arrow shaft as the first tail section and the collar section are externally positioned to the shaft body. The sleeve is externally mounted around the shaft body and the first tail section to protect the structural integrity of the torque dissipation rod insert and the arrow shaft.