Self-reporting Grounded Nut-Clip with Star Washer Indicator
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Solution Overview
Problem
Rack systems face challenges with grounding suitability due to the use of unthreaded holes and clips made from spring steel, which can be difficult to install and remove, leading to inconsistent electrical bonding and increased costs, and the reliance on ground straps that are often misinstalled or removed improperly.
Innovation Solution
A self-reporting, grounded nut-clip with a support body, star washer, and indicator that automatically activates upon complete installation, ensuring proper electrical contact and visible confirmation of grounding, using a structural assembly method that aligns with existing rack systems and includes electrically conductive materials and paint for effective grounding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If spring steel clips are used for grounding, then electrical bonding is achieved, but installation and removal become difficult and inconsistent
Solution Approach 1:
The grounding system is segmented into a nut-clip portion and a washer portion that can be installed separately. The nut-clip is inserted first, followed by the washer which is driven onto the fastener, allowing for easier installation and removal while maintaining reliable electrical bonding through the star-shaped contact points.
Solution Approach 2:
Instead of using traditional clips that are difficult to install and remove, the invention inverts the approach by using a nut-clip combined with a washer that is driven onto the fastener. This inversion allows the grounding element to be easily installed by simply driving the washer on, and easily removed by unscrewing the fastener.
2Reliability
If ground straps are used for grounding, then electrical bonding is provided, but misinstallation and improper removal occur frequently
Solution Approach 1:
The system provides self-verification through the indicator mechanism that automatically detects when the washer is properly driven onto the fastener and makes electrical contact. This self-service feature eliminates the need for external verification and prevents misinstallation by providing immediate visual feedback when grounding is achieved.
Solution Approach 2:
The indicator provides immediate visual feedback when the washer is properly installed and electrical contact is made. The indicator activates to show that grounding has been achieved, preventing misinstallation and ensuring proper operation without requiring additional test equipment.
3Measurement precision
If additional test equipment is used to verify grounding, then grounding accuracy is confirmed, but installation complexity and costs increase
Solution Approach 1:
The grounding verification system is self-contained within the nut-clip assembly itself. The indicator is integrated into the nut-clip and automatically activates when grounding is achieved, eliminating the need for external test equipment and reducing installation complexity while maintaining verification accuracy.
Solution Approach 2:
The verification function is merged with the grounding element itself. The indicator is integrated into the nut-clip assembly, combining the grounding function and verification function into a single integrated component, thereby eliminating the need for separate test equipment.
4Reliability
If multiple grounding points are used, then electrical bonding reliability is improved, but device complexity and costs increase
Solution Approach 1:
The star-shaped washer provides multiple localized contact points (five points) at specific locations around the fastener. This distributes the electrical bonding across multiple local points rather than requiring a complex multi-point grounding system, achieving reliable electrical bonding through localized contact quality.
Solution Approach 2:
The grounding system uses a composite structure combining the nut-clip portion and the washer portion made from electrically conductive material. This composite design provides multiple contact points through the star-shaped washer while maintaining structural simplicity and avoiding the need for separate multiple grounding elements.
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 self-reporting, grounded nut-clip provides a reliable and visible indication of proper grounding, reducing installation errors and costs by ensuring consistent electrical bonding and easy confirmation of good contact without the need for additional test equipment.
Implementation Method 1
The indicator is coupled to the third support section and is configured for automatic activation upon complete nut-clip installation
Implementation Method 2
the opposite sides of the star washer electrically contact the conductive materials through the paint
Data Source
AI summary
A self-reporting, grounded nut-clip is provided. The self-reporting, grounded nut-clip includes a support body. The support body includes first and second bends defining first, second and third support sections interleaved with the first and second bends. The first and third support sections define first and second apertures, respectively, and the second support section is interposed between the first and third support sections. The self-reporting, grounded nut-clip further includes a fastening element receiving member disposed on the first support section at the first aperture, a star washer, and an indicator. The star washer is disposed on the third support section at a location of the second aperture. The indicator is coupled to the third support section and is configured for automatic activation upon complete nut-clip installation.