Connector Barrel End Bell Assembly Nut Retaining Force
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Solution Overview
Problem
Existing connectors require a large force for initial assembly and can damage the end bell when repeatedly assembled and disassembled, leading to a reduced retaining force between the assembly nut and the end bell.
Innovation Solution
A connector design featuring a spring arm and seat portion on the end bell, along with a projection on the assembly nut that engages the spring arm, secures the barrel and assembly nut to the end bell, reducing the required assembly force and preventing damage during repeated assembly and disassembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the assembly nut is press-fit into the slot of the end bell during initial assembly, then the barrel and end bell are coupled together, but a large force is required and the end bell is scraped, resulting in reduced retaining force
Solution Approach 1:
The patent introduces a resin layer between the assembly nut and the end bell slot. This resin layer acts as a cushioning element that absorbs the impact and distributes the pressing force during assembly, preventing direct metal-to-metal contact that causes scraping. The resin layer is applied beforehand to the slot, providing protective cushioning before the assembly nut is pressed in, thereby reducing the required assembly force and preventing damage to the end bell while maintaining adequate retaining force.
2Adaptability or versatility
If the assembly nut is repeatedly assembled and disassembled, then the connector can be reconfigured, but the end bell is scraped and the retaining force of the assembly nut is lowered
Solution Approach 1:
The resin layer is applied beforehand to the slot in the end bell, creating a protective interface that prevents direct contact between the assembly nut and the metal slot during repeated assembly and disassembly operations. This cushioning layer absorbs wear and prevents scraping of the end bell, thereby maintaining the retaining force of the assembly nut across multiple reconfiguration cycles while enabling the connector to be reconfigured as needed.
3Strength
If a large force is applied during initial assembly, then the assembly nut secures the barrel to the end bell, but the end bell is scraped and damaged
Solution Approach 1:
The resin layer is applied beforehand to the slot in the end bell to provide a cushioning interface. When the assembly nut is pressed in with the necessary securing force, the resin layer absorbs and distributes this force, preventing direct contact between the hard assembly nut and the metal end bell slot. This eliminates scraping damage while still allowing sufficient securing force to be transmitted to properly attach the barrel to the end bell.
Solution Approach 2:
The resin layer serves as an intermediary material between the assembly nut and the end bell slot. This intermediary layer transfers the securing force from the assembly nut to the end bell structure while preventing direct metal-to-metal contact that would cause scraping. The resin acts as a mediator that enables force transmission without damage, protecting the end bell from harmful contact during the assembly process.
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 securing mechanism allows for secure attachment of the barrel and assembly nut without requiring excessive force, maintains the retaining force even with repeated assembly and disassembly, and facilitates easy orientation changes of the cable without removing the assembly nut from the barrel.
Implementation Method 1
The end bell includes a spring arm and a seat portion. The assembly nut includes a projection disposed on the seat portion and engaging the spring arm to couple the barrel to the end bell.
Data Source
AI summary
A connector is provided and includes a barrel, an end bell, an assembly nut, and a securing mechanism. The end bell includes a spring arm and a seat portion. The assembly nut includes a projection disposed on the seat portion and engaging the spring arm to couple the barrel to the end bell. The securing mechanism secures the barrel and the assembly nut to each other.