Connector Assembly Pre-Lock Structure for Tool-Free Final Locking
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Solution Overview
Problem
Existing connector assemblies require pre-locking of the terminal position locking device, which can inadvertently shift to the final-locking position during delivery, necessitating additional tools and high force for unlocking, complicating user installation and maintenance.
Innovation Solution
A connector assembly design with a housing and terminal position locking device featuring a pair of locking hook arms and blocks, allowing stable pre-locking during delivery and easy transition to final-locking with manual force, eliminating the need for additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If snap-fitting positions are inside the port, then the locking mechanism is compact, but additional tools are required for unlocking operations
Solution Approach 1:
A blocking portion is introduced as an intermediary element that prevents the locking hook arm from fully engaging the second locking mating block during the pre-locked state. This blocking portion is positioned such that it can be manually manipulated to release the lock, providing a simple tool-free unlocking mechanism while maintaining compact snap-fitting positions inside the port.
2Reliability
If a large unlocking force is required, then the locking mechanism is secure, but it becomes inconvenient for user maintenance
Solution Approach 1:
The locking mechanism transitions from a static high-force lock to a dynamic multi-position system. The blocking portion creates a mechanical advantage that allows easy transition between pre-locked and final-locked states, reducing the force required for unlocking while maintaining secure locking when engaged.
Data Source
AI summary
A connector assembly includes a housing having a port and a terminal position locking device detachably inserted into the port. The port is defined by a pair of first sides of the housing separated in a first direction and a pair of second sides of the housing separated in a second direction perpendicular to the first direction. A pair of outer surfaces of the second sides are each provided with a block. The terminal position locking device is inserted into the port in a third direction perpendicular to both the first direction and the second direction. The terminal position locking device has a locking hook arm disposed on each of a pair of opposite sides of the terminal position locking device. The terminal position locking device is in a pre-locking position relative to the housing when a hook portion of the locking hook arm abuts against the block.