Switchable Conductive Insulative Footwear for ESD and Electric Hazard Protection

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Solution Overview

Problem

Existing footwear technologies are incompatible for addressing both electrostatic discharge (ESD) and electric hazard (EH) protection, requiring users to switch between different shoes or use additional covers, which is inconvenient and increases the risk of accidents due to the lack of a dual-function shoe that can adapt between conductive and insulative states.

Innovation Solution

A shoe design that includes an upper sole and an outer sole, with an electrical component that can be switched between an electrically connected and insulated state, allowing the shoe to function as either an ESD shoe for grounding or an EH shoe for insulation, using conductive and insulative elements to control the electrical connection between the soles.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If users wear specialized ESD footwear to dissipate electrostatic charge, then electrostatic discharge protection is improved, but electric hazard protection is worsened (insulation is reduced)

Engineering Contradiction:
Improveelectrostatic discharge protectionVSAvoidelectric shock hazard
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The footwear incorporates a switchable mechanism that allows the electrical connection between the upper sole and outer sole to be dynamically changed. A control switch enables the user to toggle between a conductive state (for ESD protection) and an insulative state (for EH protection), making the electrical properties of the footwear adaptable rather than fixed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The footwear changes its electrical conductivity parameter based on the selected mode. In the first state, the footwear maintains high electrical conductivity to dissipate static charge. In the second state, the footwear transitions to high electrical insulation to prevent electric shock. This parameter change is achieved through the controllable electrical connection mechanism between sole components.

Inventive Principle:
Principle #35Parameter changes

2Reliability

If users wear specialized EH footwear to insulate from electric shock, then electric hazard protection is improved, but electrostatic discharge protection is worsened (charge dissipation is reduced)

Engineering Contradiction:
Improveelectric shock protectionVSAvoidelectrostatic charge buildup
Core Design Contradiction:
ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The footwear incorporates a switchable mechanism that allows the electrical connection between the upper sole and outer sole to be dynamically changed. A control switch enables the user to toggle between a conductive state (for ESD protection) and an insulative state (for EH protection), making the electrical properties of the footwear adaptable rather than fixed.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The footwear changes its electrical conductivity parameter based on the selected mode. In the first state, the footwear maintains high electrical conductivity to dissipate static charge. In the second state, the footwear transitions to high electrical insulation to prevent electric shock. This parameter change is achieved through the controllable electrical connection mechanism between sole components.

Inventive Principle:
Principle #35Parameter changes

3Reliability

If users switch between different shoes or use additional covers to address both ESD and EH protection, then both protection types can be achieved, but device complexity and ease of operation are worsened

Engineering Contradiction:
Improvedual protection capabilityVSAvoidfootwear switching convenience
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The footwear is designed to perform multiple functions within a single device. By incorporating the switchable electrical connection mechanism, the same footwear can provide either ESD protection or EH protection depending on the selected state, eliminating the need for users to switch between different pairs of shoes or use additional protective covers.

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

Solution Approach 2:

The footwear incorporates a switchable mechanism that allows the electrical connection between the upper sole and outer sole to be dynamically changed. A control switch enables the user to toggle between a conductive state (for ESD protection) and an insulative state (for EH protection), making the electrical properties of the footwear adaptable rather than fixed.

Inventive Principle:
Principle #15Dynamics

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 seamlessly switch between ESD and EH modes without changing shoes, enhancing safety and convenience by providing a single footwear solution that adapts to different work environments, thereby reducing the risk of electrostatic damage and electric shocks.

Implementation Method 1

The upper sole may be electrically connected to the outer sole in the first state. The upper sole may be electrically insulated from the outer sole in the second state.

Methodology Applied
Scientific EffectElectrical conduction: Conduction (electrical)

Implementation Method 2

The upper sole may be electrically insulated from the outer sole in the second state, effectively increasing the resistance of a path to ground through the user's body

Methodology Applied
Scientific EffectElectrical insulation: Electrical Resistance

Data Source

PatentUS11517072B2Adaptive electrostatic discharge and electric hazard footwear
Publication Date: 2022.12.06 INTERNATIONAL BUSINESS MACHINE CORPORATION
  • US11517072B2 patent drawing
  • US11517072B2 patent drawing
  • US11517072B2 patent drawing

AI summary

A shoe may include an upper sole and an outer sole. In one state of the shoe, the upper sole is conductively connected to the outer sole. In another state of the shoe, the upper sole is electrically insulated from the outer sole. The shoe may be changed between these states.