Aluminum Lighted Nock with External Switch for Archery Durability
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Solution Overview
Problem
Lighted arrow nocks made from clear plastic frequently break, leading to premature discarding, as they are not durable enough to withstand the rigors of archery.
Innovation Solution
An aluminum lighted nock with an external switch, featuring a nock body made from aluminum, a light unit with a modified top hat type of LED, and a compression spring powered by a pin battery, allowing for actuation without tools and providing a slide pin for turning off the light.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If clear plastic nock body is used, then ease of manufacture is improved, but strength and durability deteriorate
Solution Approach 1:
The patent applies composite materials by combining aluminum (for strength and durability) with clear plastic components (for light transmission and ease of manufacture). The aluminum nock body provides structural strength while plastic inserts or coatings maintain ease of manufacturing and light visibility features.
2Strength
If aluminum nock body is used, then strength is improved, but ease of manufacture deteriorates
Solution Approach 1:
The nock is segmented into multiple components: an aluminum nock body for strength, and separate plastic inserts or light-containing components that can be manufactured independently and assembled. This segmentation allows each material to be optimized for its specific function while simplifying overall manufacturing.
3Reliability
If integrated switch mechanism is added, then reliability is improved, but device complexity increases
Solution Approach 1:
The switch mechanism is designed to be actuated by the archer's own finger during normal nock handling, eliminating the need for separate switching components or complex control systems. The nock structure itself facilitates the switching action through its geometric design.
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 aluminum nock body enhances durability, allowing the lighted nock to withstand the impact of archery while the external switch and pin battery configuration enable easy power management and light activation, extending the nock's lifespan and functionality.
Implementation Method 1
a modified top hat type of LED, an LED housing, an LED housing insert and a switch... The modified top hat type of LED includes an elongated light emitting portion
Implementation Method 2
The lighted nock with an external switch (lighted nock) preferably includes a nock body, a light unit, a compression spring and a power source
Data Source
AI summary
An aluminum lighted nock with an external switch preferably includes a nock body, a light unit, a compression spring and a power source. The nock body preferably includes a string portion and a shank portion extending from one end of the string portion. A string receiver is formed in the other end of the string portion. A battery bore is formed through the shank portion and into the string portion. A light hole is formed through a bottom of the battery bore. The light unit preferably includes a top hat LED, a LED housing and a slide pin, which is slid into the battery bore. The pin battery is pressed into the battery bore. The shank portion is inserted into a nock end of an arrow. The top hat LED is pushed back during a launch of the arrow and creates an electrical connection with the power source.