Arrow Insert with Reinforcing Collar for Alignment Tolerance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing arrow insert/outsert assemblies for small-diameter arrow shafts have strict tolerance stack-ups, making alignment of arrowheads with the shaft challenging, and are not easily exchangeable or robust enough, especially in field situations.
Innovation Solution
An insert/outsert assembly with a reduced tolerance stack-up, featuring a monolithic insert and sleeve with complementary thread sets that allow independent axial alignment of the arrowhead and shaft, and a design that keeps the sleeve engaged with the insert even when the arrowhead is removed, facilitating easy part exchange and increased robustness.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a standard insert/outsert assembly is used in small-diameter arrow shafts, then the arrow shaft can accommodate an arrowhead, but the tolerance stack-up becomes increasingly strict and hard to achieve
Solution Approach 1:
The patent merges the insert and outsert into a single monolithic component, eliminating the interface between them. This consolidation removes one alignment tolerance from the stack-up, directly resolving the contradiction by reducing the number of tolerances while maintaining the ability to accommodate arrowheads in small-diameter shafts
Solution Approach 2:
The monolithic insert/outsert serves multiple functions: it provides the insertion interface into the arrow shaft, the threading interface for the arrowhead, and the structural reinforcement element. By combining these functions into one component, the patent reduces complexity while maintaining manufacturing precision
2Reliability
If the sleeve is designed to engage the insert, then the assembly becomes more robust, but the sleeve may fall off when the arrowhead is removed
Solution Approach 1:
The engagement mechanism between the sleeve and insert is designed to be dynamically responsive to the presence or absence of the arrowhead. When the arrowhead is installed, the engagement features maintain a secure connection for robustness. When the arrowhead is removed, the engagement features allow the sleeve to detach easily, enabling field exchangeability without compromising reliability during use
3Strength
If the insert/outsert assembly is made more robust, then it can withstand field conditions, but it becomes harder to exchange parts in field situations
Solution Approach 1:
The assembly is segmented into distinct components (monolithic insert/outsert, sleeve, arrowhead) with standardized engagement interfaces. This segmentation allows the arrowhead to be easily exchanged while maintaining a robust connection during use. The modular design enables field repair by allowing replacement of only the arrowhead or sleeve as needed, without requiring replacement of the entire assembly
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
This design achieves improved coaxial alignment accuracy and robustness, allowing for easier maintenance and adjustment of arrowheads, and provides structural reinforcement to the arrow shaft, reducing the risk of assembly disassembly issues in field conditions.
Implementation Method 1
The engagement mechanism includes a first thread set, the complementary engagement mechanism includes a second thread set, which is configured to engage the first thread set
Data Source
AI summary
An example assembly includes an insert and a sleeve. The insert has a first end and a second end. The first end of the insert is configured to be inserted into an end of the arrow shaft, and the second end of the insert is configured to receive a securing/anchoring end of the arrow tip. The sleeve is configured to surround at least a portion of the end of the arrow shaft and at least a portion of the insert. The insert includes an engagement mechanism, and the sleeve includes a complementary engagement mechanism. The engagement mechanism and the complementary engagement mechanism are configured to selectively engage one another.