Light-Emitting Arrow Nock Assembly to Prevent Battery Disengagement
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Solution Overview
Problem
Existing light-emitting arrow nocks face issues with battery disengagement due to vibration and inertial motion, and are not adaptable to dual-purpose composite bows due to lack of external retaining tabs.
Innovation Solution
The design integrates the nock assembly and mounting assembly with a plugging-in or threaded rotation connection, incorporating movement and rotation limit structures, and includes a power supply assembly cavity with a limit structure, along with external retaining tabs for secure attachment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If batteries and main bodies are bonded through glue, then the structure is simple and easy to manufacture, but the battery disengages under high draw-weight vibration and inertial motion
Solution Approach 1:
The arrow nock is divided into separate functional modules: a nock body, a battery compartment, and a light-emitting assembly. These modules are connected through mechanical interfaces (plugging-in or threaded rotation) rather than being bonded as a single unit, allowing independent assembly and disassembly while maintaining structural integrity under vibration.
Solution Approach 2:
The connection mechanism between the battery compartment and nock body transitions from a static glued bond to a dynamic mechanical connection that can accommodate vibration and inertial forces. The plugging-in or threaded rotation design allows for controlled movement and stress distribution, preventing disengagement during high-draw-weight operation.
2Device complexity
If the nock head is designed with only middle retaining slots for single-string bows, then the structure is simple, but it cannot adapt to dual-purpose composite bows
Solution Approach 1:
The nock head is designed with dual retention mechanisms: middle retaining slots for single-string bows and external retaining tabs for dual-purpose composite bows. This multi-functional design allows the same nock to be used with different bow types, expanding versatility without significantly increasing complexity.
Solution Approach 2:
The retention mechanism is extended from a single-plane middle retaining slot to a multi-dimensional structure that includes external retaining tabs protruding from the nock body. This adds a new spatial dimension for engagement with dual-purpose composite bows while preserving the original middle slot functionality.
3Ease of operation
If the battery and light-emitting assembly are loosely connected, then assembly is easy, but the battery enters the arrow shaft and operation becomes incapable
Solution Approach 1:
The battery compartment incorporates preliminary positioning features such as guide rails,定位 pins, or threaded engagement mechanisms that ensure the battery is correctly positioned and secured before the light-emitting assembly is attached. This preliminary action prevents the battery from entering the arrow shaft during assembly or operation.
Solution Approach 2:
A mechanical intermediary structure (such as a threaded connection or plugging-in mechanism) is introduced between the battery and light-emitting assembly to mediate their connection. This intermediary ensures proper alignment and secure attachment, preventing the battery from disengaging and entering the arrow shaft while maintaining ease of assembly.
Data Source
AI summary
A light-emitting arrow nock includes a nock assembly, a light-emitting assembly, a power supply assembly and a mounting assembly, wherein the nock assembly and the mounting assembly are installed as an integrated structure, and wherein the light-emitting assembly and the power supply assembly are installed as a whole in internal cavities of the nock assembly and the mounting assembly. The mounting assembly and the nock assembly of the present disclosure are connected through plugging-in or threaded rotation, allowing the power supply assembly to connect to the light-emitting assembly to light on the light-emitting assembly, thereby enabling more convenient and efficient operation and solving the problem of battery disengagement in existing light-emitting arrow nocks. The nock assembly of the present disclosure is provided with at least one external retaining tab on an exterior side thereof.