Split Pin Safety Cap Shields Sharp Ends
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Solution Overview
Problem
Split pins with sharp tips can cause damage to soft materials like fabric and rubber, and existing solutions to protect them are time-consuming, unreliable, and not suitable for all applications.
Innovation Solution
A split pin safety cap with a simple, lightweight design that securely shields the ends of the split pin using a cap with orthogonal and parallel openings, which can be retrofitted to existing assemblies, and is made from materials like plastics or aluminum for strength and low friction.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If split pin tips are left exposed, then the split pin can be easily inserted and installed, but the sharp tips can cause damage to soft materials like fabric and rubber
Solution Approach 1:
A safety cap acts as an intermediary component between the sharp split pin tips and the surrounding environment. The cap completely encloses the sharp tips, preventing contact with soft materials while allowing the split pin to maintain its original installation procedure without modification.
Solution Approach 2:
The safety cap is designed as a separate, removable component that segments the protective function from the split pin itself. This allows the split pin to remain simple and easy to install while the cap provides the protective enclosure, resolving the contradiction between ease of installation and harm prevention.
2Object-affected harmful factors
If encapsulation with sealant is used to protect split pin tips, then the tips are encased in protective coating, but the process is time consuming and unreliable due to potential wear
Solution Approach 1:
The safety cap serves as a mechanical intermediary that provides protection without requiring chemical sealants or time-consuming encapsulation processes. The cap can be quickly installed and removed, making the protection process efficient and reliable.
Solution Approach 2:
The safety cap is designed as a simple, lightweight protective component that can be easily replaced if needed. This approach is more efficient than permanent encapsulation, allowing for quick replacement rather than time-consuming removal and reapplication of sealants.
3Reliability
If a dedicated retention means is added to the cap, then the cap can be securely retained, but the design becomes more complex and heavier
Solution Approach 1:
The safety cap design allows the split pin itself to serve multiple functions: both as the fastening element and as the retention mechanism for the cap. The cap's internal geometry is designed to interact with the split pin structure, eliminating the need for separate retention components and reducing overall complexity.
Solution Approach 2:
The split pin automatically provides retention for the safety cap through its own structural features. The cap is designed to be retained by the split pin without requiring any additional retention means, making the system self-sufficient and simpler in design.
Data Source
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AI summary
A split pin safety cap 30 for encapsulating free ends of an installed split pin 108, the split pin safety cap 30 having a body comprising one or more side walls 32 which together define a bore arranged to receive an end portion of a rod 102, first and second openings 36, 34 sized to receive the arms of the split pin when the split pin is in an insertion condition to permit the split pin to be inserted through a lateral hole in the rod, and at least one recess 34 sized to receive the free ends of the split pin when the split pin is in an installed condition, wherein the body includes a retention portion 38 situated between the first opening 36 and an end face of the one or more side walls 32, the retention portion serving to retain the cap on the rod when the split pin is in the installed condition.