Snap-Fit Nut Cap With Inward Prongs for Corrosion Insulation
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Solution Overview
Problem
Fasteners, such as nuts and bolts, often face exposure to harsh elements like moisture and chemicals, leading to corrosion and rust, and can cause electrical issues and fraying of nearby wires due to contact, while also being difficult to loosen and tighten effectively.
Innovation Solution
A cap design featuring a primary member with a conic section and radially inward prongs that engage with the nut and bolt, providing protection and electrical insulation, with a skirt and aperture for sealing and easy installation, and a method of snapping into place using prongs to secure the fastening system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the nut and bolt are exposed to harsh elements for fastening purposes, then the fastening function is achieved, but corrosion and rust occur leading to reduced reliability
Solution Approach 1:
The patent employs a cap made of flexible material that forms a protective shell around the nut and bolt, isolating them from harsh environmental elements. The cap's flexible nature allows it to conform to the fastener geometry while providing corrosion protection, directly addressing the reliability issue caused by environmental exposure.
Solution Approach 2:
The cap is designed with segmented features including multiple prongs that can be independently formed through stamping operations. This segmentation allows for efficient manufacturing while creating a protective enclosure that separates the fastener from harmful environmental factors.
2Ease of operation
If the nut and bolt are left exposed for mechanical access, then installation and maintenance are easier, but electrical insulation and wire protection are compromised
Solution Approach 1:
The cap serves as an intermediary component between the metallic fastener and the surrounding environment, particularly wires. It provides electrical insulation to prevent unwanted electrical contact while the open design maintains accessibility for installation and maintenance operations.
Solution Approach 2:
The flexible cap material creates a protective barrier that prevents direct contact between the fastener and wires, eliminating wire fraying caused by metal-to-metal contact while maintaining ease of access through its removable or flexible nature.
3Reliability
If a protective cap is added to cover the nut and bolt, then corrosion protection and electrical insulation are improved, but device complexity increases
Solution Approach 1:
The cap combines multiple protective functions into a single component: corrosion protection, electrical insulation, and wire protection are all achieved through one integrated part rather than multiple separate components, thereby reducing overall system complexity.
Solution Approach 2:
The cap's material properties are selected to provide both corrosion resistance and electrical insulation simultaneously, changing the protective parameters from requiring multiple components to achieving multiple protections through a single component with appropriate material characteristics.
4Reliability
If traditional multi-step fastening methods are used, then secure fastening is achieved, but manufacturing time and productivity are reduced
Solution Approach 1:
The cap is pre-formed through stamping operations with integrated prongs and features that enable snap-fit attachment. This preliminary preparation allows for rapid installation without requiring multiple adjustment steps or complex assembly procedures, thereby improving productivity while maintaining secure fastening.
Solution Approach 2:
The cap employs dynamic attachment mechanisms such as snap-fit features and flexible prongs that allow for quick installation and removal. The flexible material enables the cap to deform during installation and then lock into place, providing secure fastening through a single rapid action rather than multiple steps.
Data Source
AI summary
A fastening system is disclosed. The fastening system may have a cap including a primary member and a plurality of prongs. The primary member includes a wall member and a floor member defining a conic section with an open end. The plurality of prongs extend radially inward from the wall member and are configured to contact at least one surface of at least one of a nut, bolt, and/or a washer.