Electronic Sheet Dispenser Static Dissipation Without Ground Wiring
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Solution Overview
Problem
Conventional electronic sheet material dispensers face challenges in dissipating static electricity, which can lead to unpleasant shocks for users and damage to electronic components, especially in battery-powered devices without accessible ground connections.
Innovation Solution
Incorporating a passive, self-discharging static charge dissipating material with internal components prone to static charge buildup, such as the drive roller, pressure roller, and tear bar, to effectively neutralize static electricity without the need for a readily accessible ground connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional grounding methods are used to dissipate static charge, then static charge dissipation is effective, but the dispenser requires accessible ground connections which are not available in battery-powered devices
Solution Approach 1:
The patent introduces an intermediary object (a person's body acting as a conductor) to transfer static charge from the dispenser components to the ground. The key element is the conductive path through the user's body when they touch the dispenser, which serves as the grounding mechanism in the absence of traditional ground connections.
Solution Approach 2:
The dispenser design incorporates features that utilize the user's own body to perform the grounding function. The key element is the conductive path through the user's body when they touch the dispenser, which serves as the grounding mechanism in the absence of traditional ground connections.
2Reliability
If wire-based grounding systems are used to connect internal components to external ground, then static charge can be dissipated, but the device complexity increases and requires installation near ground connections
Solution Approach 1:
The patent extracts the grounding function from the traditional wire-based system and relocates it to the user's body. By removing the requirement for internal wiring and external ground connections, the system achieves static charge dissipation without the associated complexity and installation constraints.
Solution Approach 2:
The user's body serves as an intermediary conductor that replaces the traditional wire-based grounding system. This intermediary approach eliminates the need for complex internal wiring and external ground connections while maintaining effective static charge dissipation.
3Adaptability or versatility
If static charge is allowed to build up in dispenser components, then no ground connection is needed, but users receive static shocks and electronic components may be damaged
Solution Approach 1:
The user's body acts as a controlled intermediary that safely transfers accumulated static charge to ground. By designing the dispenser to utilize the user's touch as the grounding path, the system converts what would be an uncontrolled discharge (static shock) into a controlled dissipation process that protects both the user and electronic components.
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 dissipates static charges, preventing user shocks and protecting electronic components, while being applicable to battery-powered dispensers in locations without accessible ground connections.
Implementation Method 1
Incorporating a passive, self-discharging static charge dissipating material with internal components prone to static charge buildup, such as the drive roller, pressure roller, and tear bar, to effectively neutralize static electricity
Data Source
AI summary
An electronic dispenser for dispensing a measured sheet from a roll of web material includes a passive, self-discharging static charge dissipating material configured with at least one component of the dispenser that stores static charge generated by operation of the dispenser.