Coaxial Cable Connector Radial-to-Axial Locking Mechanism
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Solution Overview
Problem
Current coaxial cable connectors, particularly F-connector fittings, often become loose due to improper installation, vibration, or temperature changes, leading to signal interference and poor RF signal transfer due to gaps in the electrical path, causing issues like 'tiling' in CATV systems.
Innovation Solution
A coaxial cable connector design featuring a body with a groove and a coupler with a ring that engages both the body and the coupler, allowing radial movement to cause axial movement, ensuring secure engagement with a terminal, and incorporating features like threaded members, elastic rings, and fingers for secure mechanical and electrical contact, providing a continuous RF path and shielding against ingress and egress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional F-connector design is used, then the device complexity is low, but the reliability of the connection deteriorates due to loosening from vibration and temperature changes
Solution Approach 1:
The connector employs a dynamic locking mechanism where the coupler can rotate radially to engage with the body, creating an adjustable mechanical lock that adapts to vibration and temperature changes. This dynamic engagement prevents loosening while maintaining connection stability without requiring overly complex static structures.
Solution Approach 2:
The connector is divided into distinct functional segments: a body with groove, a coupler with channel, and a ring component. Each segment performs a specific function - the groove and channel guide engagement, the ring provides locking, and the threaded member secures the connection. This segmentation allows each part to be optimized independently while working together to prevent loosening.
2Reliability
If the connector interfaces are allowed to pull apart, then the ease of operation is improved, but the RF signal transfer deteriorates due to gaps causing signal egress and ingress
Solution Approach 1:
The ring acts as an intermediary component between the coupler and body, filling and sealing the interface gap. As the coupler rotates radially, the ring engages with both components to maintain continuous RF contact, preventing signal egress and ingress while allowing the connector to be properly installed and secured.
Solution Approach 2:
The connector design ensures continuous RF signal path through the engagement of the groove, channel, and ring. As the coupler rotates radially to lock, the electrical contact is maintained continuously without interruption, preventing gaps that would cause signal leakage while allowing installation flexibility.
3Reliability
If a locking mechanism is added to prevent loosening, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The locking function is merged with the existing structural components rather than adding a separate locking mechanism. The groove in the body and channel in the coupler are integrated with the ring to form a unified locking system. This merging provides anti-loosening capability while minimizing additional complexity by using the existing geometric features for both structural support and locking engagement.
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 design ensures a secure connection that maintains signal integrity by preventing gaps and leaks, improving RF performance and picture quality by providing a reliable locking mechanism and shielding against signal interference.
Implementation Method 1
radial movement of the coupler causes the axial movement of the body relative to the terminal
Implementation Method 2
the threaded member having a threaded opening to engage a corresponding threaded portion of the terminal
Implementation Method 3
an elastic ring disposed in the opening of the coupler and adjacent the front end of the body, the elastic ring sealing the front end of the coupler when attached to the terminal
Data Source
AI summary
The coaxial cable connector has a coupler, a post, and a ring that prevent interfaces from gapping and provide a robust alternative ground path that also RF shields the connector from both ingress and egress. The ring is disposed in between and engages at least a portion of a groove in the body and at least a portion of the channel in the coupler, radial movement of the coupler causes the axial movement of the body relative to the terminal.