Electronic Device Grounding via Screw Element and Insulating Element
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Solution Overview
Problem
Conventional circuit boards with light guiding elements face challenges in reducing size due to occupied wiring space and ineffective grounding, leading to static electricity accumulation, which can damage the board.
Innovation Solution
An electronic device design incorporating a conductive assembly with a base and screw element, an insulating element, and a conductive element that allows the circuit board to be electrically connected to a ground element, effectively preventing static electricity accumulation by using a clamping portion and insulating elements to create a grounding path while minimizing space usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If bare coppers are disposed at both sides of the circuit board to connect to ground, then grounding effectiveness is improved, but wiring space is occupied and circuit board size cannot be reduced
Solution Approach 1:
The patent transitions from a two-dimensional planar grounding structure (bare coppers on the board surface) to a three-dimensional vertical grounding structure (screw element penetrating the board with clamping portions). This dimensional change allows grounding connection without occupying additional planar wiring space, effectively resolving the contradiction between grounding effectiveness and circuit board area.
Solution Approach 2:
The screw element is nested within the lock hole of the circuit board, with the clamping portion positioned between the base and the lock hole. This nesting arrangement allows the grounding path to be formed within the existing structural space, eliminating the need for additional bare copper areas and reducing overall circuit board size while maintaining effective grounding.
2Illumination intensity
If insulating light guide element is directly installed in existing lock hole, then visual effect is improved, but grounding path is blocked and static electricity accumulates
Solution Approach 1:
The conductive element serves as an intermediary between the insulating light guide element and the screw element. It is disposed between the light guide element and the screw element, electrically connected to both, thereby transferring static electricity from the insulating element to the grounding path without compromising the visual effect of the light guide element.
Solution Approach 2:
The patent segments the grounding function from the mechanical fastening function. The screw element is divided into a fixing portion (for mechanical attachment) and a clamping portion (for electrical connection). This segmentation allows the insulating light guide element to be installed while maintaining both mechanical stability and electrical grounding through the separate conductive element.
3Adaptability or versatility
If hole is formed on circuit board to lock light guide element, then light guide element installation is enabled, but wiring space is reduced and circuit board size cannot be effectively reduced
Solution Approach 1:
The screw element serves multiple functions simultaneously: it provides mechanical fastening for the light guide element, creates a grounding path through the circuit board, and eliminates the need for separate bare copper grounding areas. This multi-functionality allows light guide element installation while actually reducing the required circuit board area compared to conventional methods.
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 solution effectively reduces the circuit board's size, enhances grounding to prevent static electricity damage, and increases wiring space, aligning with the design trend towards lighter circuit boards while ensuring reliable operation.
Implementation Method 1
the circuit board is electrically connected to the ground element through the conductive element and the conductive assembly
Data Source
AI summary
An electronic device includes a ground element, a conductive assembly, a circuit board, an insulating element and a conductive element. The conductive assembly includes a base and a screw element. The base is disposed at the ground element and contacts the ground element. The screw element has a fixing portion and a clamping portion connected to the fixing portion. The outer diameter of the clamping portion is larger than the outer diameter of the fixing portion, and the fixing portion is fixed to the base. The circuit board is disposed between the base and the clamping portion of the screw element. The insulating element is disposed between part of the clamping portion and the circuit board. The conductive element is disposed at the circuit board and contacts the conductive assembly. The circuit board is electrically connected to the ground element through the conductive element and the conductive assembly.