Connector Plug Tail Sleeve Locking for Anti-Loosening
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Solution Overview
Problem
Existing connector plugs pose safety hazards due to the need for manual unscrewing of the tail sleeve, especially in large voltage and current environments, and are prone to accidental loosening over time.
Innovation Solution
A threaded sleeve locking member is integrated into the connector plug, allowing the tail sleeve to rotate only in one direction and be fastened securely, with a one-way lock catch and an elastic piece ensuring the locking member remains engaged, and a key for easy separation and relocking without requiring tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the tail sleeve is connected to the connector housing through a threaded structure, then the connector can be easily assembled and disassembled, but the tail sleeve can be unscrewed by hand in vibrating environments or after aging, creating safety hazards
Solution Approach 1:
The patent applies preliminary action by pre-installing a locking member that engages with the threaded tail sleeve before vibration or aging occurs. The locking member includes a locking ball that fits into a locking groove on the tail sleeve, preventing it from being unscrewed later due to vibration or aging, while still allowing easy assembly initially.
Solution Approach 2:
The patent uses a locking member as an intermediary between the connector housing and the threaded tail sleeve. This locking member with its locking ball and groove mechanism mediates the connection, preventing direct manual unscrewing of the tail sleeve while maintaining the threaded assembly convenience.
2Reliability
If a locking mechanism is added to prevent manual unscrewing, then connection stability is improved, but device complexity increases
Solution Approach 1:
The patent applies local quality by adding the locking mechanism only at the critical location where the tail sleeve connects to the housing, rather than redesigning the entire connector. The locking ball and groove are localized features on the tail sleeve and locking member, minimizing overall structural complexity while providing the needed reliability.
Solution Approach 2:
The locking member is pre-configured with the locking ball and groove geometry during manufacturing, so that during assembly, the locking mechanism engages automatically without requiring additional complex adjustment mechanisms or multiple components.
3Reliability
If the locking member requires a tool for operation, then security against accidental loosening is improved, but ease of operation deteriorates
Solution Approach 1:
The patent applies self-service by designing the locking member to be operable by the user's finger directly. The pressing surface on the locking member allows a finger to push the locking ball out of the locking groove for disassembly, and the spring automatically resets it for assembly, eliminating the need for external tools while maintaining security against accidental loosening.
Solution Approach 2:
The locking member incorporates a spring that provides dynamic movement to the locking ball. The locking ball can be pushed in and out of the locking groove dynamically, allowing easy manual operation for assembly and disassembly while maintaining a locked state during normal use to prevent accidental loosening.
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 prevents accidental unscrewing by hand, ensuring stable connections and safety, reducing risks and prolonging the product's service life by maintaining a secure fit without manual loosening.
Implementation Method 1
An elastic piece is arranged in the mounting slot hole to enable the threaded sleeve locking member to always maintain a backward movement trend to lock the tail sleeve
Implementation Method 2
The connector housing's rear end and the tail housing are threaded connected
Data Source
AI summary
A connector plug includes a connector housing and a tail housing. The connector housing's rear end and the tail housing are threaded connected. The upper surface of the connector housing is provided with a threaded sleeve locking member matched with the tail sleeve and a mounting slot hole for the threaded sleeve locking member to stay in and slide back and forth. The front side of the tail sleeve is provided with a tooth opening along the circumference, and the rear end of the threaded sleeve locking member is provided with a one-way lock catch which is meshed with the tooth opening and enables the tail sleeve to rotate only in one direction and be fastened to the connector housing. An elastic piece is arranged in the mounting slot hole to enable the threaded sleeve locking member to maintain a backward movement trend to lock the tail sleeve.