External Switch Mechanism for Lighted Crossbow Nock
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Solution Overview
Problem
Existing lighted crossbow nocks require tools to turn off the power source, which is inconvenient for users.
Innovation Solution
A lighted nock with an external switch that includes an elongated light emitting device, a compression spring, and a pin battery, allowing power to be actuated without a tool through a toggle mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If an internal switch mechanism is used to turn off power, then the device can be turned off, but it requires a tool to operate the switch
Solution Approach 1:
The switch mechanism is extracted from the internal structure and placed on the external surface of the nock body. This allows the switch to be operated directly by the user's finger without requiring any tools, while simplifying the overall mechanism by eliminating complex internal switching components.
Solution Approach 2:
The nock structure itself serves as part of the switching mechanism. The external switch is integrated into the nock body geometry, allowing the nock to control its own power state through direct user interaction with the external surface, without requiring separate tool-based operation.
2Reliability
If a traditional switch is integrated inside the nock, then power control is possible, but the switching action becomes difficult without tools
Solution Approach 1:
The switch is extracted from the internal cavity and repositioned on the external surface of the nock body. This extraction makes the switch accessible to direct finger operation while maintaining reliable electrical contact through the integrated design of the switch contacts within the nock structure.
3Ease of operation
If the switch is made external and accessible, then tool-free operation is achieved, but the nock body structure becomes more complex
Solution Approach 1:
The switch mechanism is merged with the external surface geometry of the nock body. The switch contacts and actuating elements are integrated into the existing nock structure rather than being added as separate components, thereby providing tool-free operation while minimizing additional structural complexity.
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
Enables users to easily turn the power on and off without needing a tool, providing a convenient and user-friendly solution for lighted crossbow nocks.
Implementation Method 1
a compression spring inserted into the battery bore... the compression spring to push the modified top hat LED toward the bow string
Implementation Method 2
The modified top hat LED includes an elongated light emitting portion... The modified top hat LED will emit light when the switch is toggled to the on position
Data Source
AI summary
A lighted crossbow nock with an external switch preferably includes a crossbow nock body, a light unit, a compression spring and a power source. The crossbow nock body preferably includes a crossbow string portion and a shank portion. A crossbow string receiver is formed in the crossbow nock body. A battery bore is formed through the shank portion. A switch opening is formed through a wall of the crossbow nock body and into battery bore. The light unit preferably includes a modified top hat LED, an LED housing, an LED housing insert and a switch. The LED housing includes an insert notch for insertion of the LED housing insert. The LED housing insert includes a switch notch. The switch includes a switch base and a pair of snap legs. The LED, LED housing and a LED housing insert are assembled and inserted into the battery bore.