Electrical Contact Mechanism With GRM Dry Lubrication
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Solution Overview
Problem
Electrical switching apparatuses rely on grease for lubrication, which requires regular maintenance, is sensitive to temperature and pollution, and can lead to increased static friction and potential failure, resulting in costly operational issues.
Innovation Solution
A metal mechanism using Graphene and Related Materials (GRM) composites at contact surfaces for dry lubrication, reducing the need for grease and enhancing corrosion resistance, stability, and durability across various temperatures and environmental conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If grease is used for lubrication in electrical switching apparatuses, then friction is reduced and mechanical wear is minimized, but maintenance is required regularly and performance degrades due to temperature, pollution, and aging
Solution Approach 1:
The patent extracts and eliminates the grease lubrication component from the electrical switching apparatus, replacing it with a dry lubrication system using Graphene and Related Materials (GRM) coatings on contact surfaces. This removes the source of maintenance requirements and degradation issues associated with grease while maintaining lubrication functionality.
Solution Approach 2:
The patent changes the lubrication parameter from wet (grease-based) to dry (GRM-based) lubrication. This parameter change transforms the lubrication mechanism from one requiring maintenance and susceptible to environmental degradation to a stable, maintenance-free system that operates reliably across temperature and pollution variations.
2Force
If grease is used for lubrication, then initial friction is reduced, but static friction increases over time due to thickening from aging or low temperatures
Solution Approach 1:
The patent changes the physical state and composition parameters of the lubrication system by replacing grease with GRM dry lubrication. This eliminates the thickening phenomenon that occurs with grease aging or temperature changes, maintaining consistent friction resistance without composition degradation.
Solution Approach 2:
The patent employs Graphene and Related Materials as composite coating materials on the contact surfaces. These composite materials provide stable lubrication properties that do not degrade or thicken over time, maintaining consistent friction characteristics across varying temperature and environmental conditions.
3Strength
If grease is used for lubrication, then mechanical wear is minimized initially, but particle pollution degrades the grease leading to increased wear and potential blockage
Solution Approach 1:
The patent removes the grease medium that is susceptible to particle pollution and degradation. By using direct GRM dry lubrication on contact surfaces, the system eliminates the lubricant that would otherwise be contaminated by particles, thereby preventing the chain of degradation leading to increased wear and blockage.
Solution Approach 2:
The GRM coating acts as a durable, maintenance-free lubrication layer that does not require replacement like degrading grease. Once applied, the GRM coating provides long-term wear protection without being consumed or degraded by environmental factors, effectively replacing the short-lived grease lubrication.
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 GRM composite provides stable and durable dry lubrication, minimizing maintenance needs and preventing lubrication failures, ensuring consistent performance and reducing the risk of mechanical blockages in electrical devices.
Implementation Method 1
By means of the GRM in or at the first and/or second contact surface(s), dry lubrication is provided, reducing or eliminating the need for lubrication maintenance during the lifetime of the mechanism.
Implementation Method 2
The corrosion resistance of the metal part may also be improved by the GRM.
Data Source
Figure 1~2
AI summary
The present disclosure relates to a mechanism (1) for an electrical device, comprising a plurality of metal parts which are not arranged for conducting an electrical current of which a first part (2a) comprises a first contact surface (3a) and a second part (2b) comprises a second contact surface (3b) arranged to move in relation to, and in contact with, the first contact surface. At least one of the first and second parts comprises a Graphene and Related Materials (GRM) at its contact surface, in a metal-GRM composite.