ESD Cable Ground Shield for Static Discharge

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Electronic devices, such as Tethered HMD products with metal shells, fail to meet electro-static discharge (ESD) standards, necessitating an effective method to discharge static electricity without occupying internal space or risking short circuits.

Innovation Solution

An ESD protection system comprising a communication cable connected to an ESD cable, where one end of the ESD cable is connected to the electronic device and the other end to the communication cable, allowing static electricity to be discharged through the communication cable, utilizing a ground shield layer for efficient discharge without internal grounding components.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If internal grounding components (grounding elastic strip or grounding foam) are used to discharge static electricity, then ESD protection is achieved, but internal space is occupied and risk of short circuit increases

Engineering Contradiction:
ImproveESD protectionVSAvoidinternal space
Core Design Contradiction:
ReliabilityVSVolume of stationary object

Solution Approach 1:

The invention extracts the grounding function from internal components and relocates it to external communication cable. The communication cable's ground shield layer is utilized as the grounding path, eliminating the need for internal grounding elastic strips or grounding foam, thus freeing internal space while maintaining ESD protection capability

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The communication cable is given a dual function: it serves both as the data/power communication channel and as the ESD protection pathway. The ground shield layer of the communication cable is utilized for discharging static electricity, making the cable multi-functional and eliminating the need for separate internal grounding components

Inventive Principle:
Principle #6Universality (Multi-functionality)

2Reliability

If internal grounding components (grounding elastic strip or grounding foam) are used to discharge static electricity, then ESD protection is achieved, but risk of short circuit increases

Engineering Contradiction:
ImproveESD protectionVSAvoidshort circuit risk
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The grounding function is extracted from internal components and relocated to the external communication cable. By using the communication cable's ground shield layer for ESD discharge, the invention eliminates internal grounding components that could potentially cause short circuits, thus reducing harmful factors while maintaining protection

Inventive Principle:
Principle #2Taking out (Extraction)

Solution Approach 2:

The communication cable acts as an intermediary between the electronic device and the external ground. Instead of directly connecting internal components to ground (which risks short circuits), the cable's ground shield layer serves as a controlled intermediary pathway for static electricity discharge, isolating internal components from direct ground contact

Inventive Principle:
Principle #24Intermediary (Mediator)

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 meets ESD standards by transmitting and discharging static electricity through the communication cable, avoiding the risks of short circuits and space occupation by internal grounding components, while improving user experience and reducing costs.

Implementation Method 1

The ESD cable is connected to the communication cable and configured to discharge static electricity of the electronic device through the communication cable

Methodology Applied
Scientific EffectElectrostatic discharge: Electrostatic Discharge

Data Source

PatentUS11388813B2Electronic device
Publication Date: 2022.07.12 LENOVO (BEIJING) LTD
  • US11388813B2 patent drawing
  • US11388813B2 patent drawing
  • US11388813B2 patent drawing

AI summary

An ESD protection device includes a communication cable and an ESD cable. An end of the communication cable is connected to an electronic device. The ESD cable is connected to the communication cable and configured to discharge static electricity of the electronic device through the communication cable. A first end of the ESD cable is connected to the communication cable, and a second end of the ESD cable is connected to the electronic device.