Self-locking Cable Connector with Nested Latch Mechanism
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Solution Overview
Problem
Current connectors for high-voltage cables to switchgear, such as GIS, lack a self-locking mechanism that allows easy yet secure disconnection, posing challenges in reliable electrical connections and safety.
Innovation Solution
A self-locking assembly with a ring and latches that move between locked and unlocked positions, combined with a sliding ring and stop mechanism, ensures secure engagement and disengagement of the cable termination with the connector, utilizing a biasing mechanism like a spring to facilitate easy disconnection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a self-locking mechanism is added to the connector, then connection reliability is improved, but device complexity increases
Solution Approach 1:
The latch is nested within the connector body, with the latch finger extending from the latch body through a window in the connector. The spring is nested within the latch assembly, providing biasing force. This nested arrangement allows the self-locking mechanism to be integrated into the existing connector structure without significantly increasing overall device complexity while maintaining connection reliability.
Solution Approach 2:
The connector employs a self-locking mechanism where the latch automatically engages with the cable insulation upon insertion and can be released by applying force in the pull-out direction. The spring provides automatic biasing to maintain the locked position. This self-service approach improves reliability without requiring external locking devices or complex control systems.
2Reliability
If a self-locking mechanism with multiple components is used, then connection security is improved, but ease of operation deteriorates
Solution Approach 1:
The latch is designed to be dynamic rather than fixed, allowing it to move between locked and unlocked positions. The latch finger can engage with the cable insulation to secure the connection, and can be displaced by applying force in the pull-out direction. This dynamic design maintains connection security during normal operation while enabling easy disconnection when needed.
Solution Approach 2:
The locking function is segmented into distinct components: the latch body, latch finger, spring, and window. This segmentation allows each component to perform its specific function efficiently - the latch finger provides the locking engagement, the spring provides automatic biasing, and the window allows visual confirmation of the locked state. The segmented design simplifies operation compared to a monolithic locking mechanism.
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 solution provides a secure, self-locking connection that prevents accidental disengagement while allowing easy and controlled disconnection, ensuring reliable electrical pathways and operational safety.
Implementation Method 1
a latch, a biasing mechanism (such as a spring) biasing the latch towards the outer surface of the connector
Data Source
AI summary
A self-locking assembly for a cable termination having a connector with a step. The self-locking assembly includes a ring having a circumference and a plurality of latches located around the circumference. Each latch is configured to move between a locked position, where the latch is engaged with the step, and an unlocked position, where the latch is disengaged from the step. A sliding ring is configured to move along a portion of the connector and includes a groove, and a support ring is located on the connector and is configured to restrict movement of the sliding ring in at least one direction.