Plug Connector Position Assurance Element Design
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Solution Overview
Problem
Conventional plug connectors are prone to separation from socket connectors due to external forces, leading to instability in the plug-in status.
Innovation Solution
A plug connector with a connector position assurance element, featuring an insulating body, terminals, cables, and a connector position assurance element that includes sliding portions and positioning holes, which secure the connector in place by buckling into the socket connector, preventing downward pressure and maintaining the plug-in status.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional plug connector uses a simple buckling portion to connect to a socket connector, then the device complexity is low, but the reliability of maintaining plug-in status is poor due to easy separation under external force
Solution Approach 1:
The connector position assurance element is divided into functional segments: sliding portions with positioning holes for lateral engagement, an abutting block for vertical positioning, and a pushing portion for actuation. This segmentation allows each component to perform its specific function while maintaining overall system reliability without excessive complexity
Solution Approach 2:
The connector position assurance element performs preliminary positioning actions during insertion: the sliding portions engage with positioning blocks first to establish lateral position, then the abutting block engages with the buckling portion to prevent downward movement. This preliminary action sequence ensures reliable plug-in status before full connection is complete
2Reliability
If the plug connector uses only a buckling portion without additional positioning mechanisms, then the ease of manufacture is high, but the connector can be easily separated due to external pressure
Solution Approach 1:
The connector position assurance element merges multiple positioning functions into a single integrated component that works with the existing buckling portion. The sliding portions, abutting block, and pushing portion are combined in one element, reducing the need for separate manufacturing processes while enhancing connection stability through multi-point engagement
3Reliability
If the connector position assurance element includes sliding portions with positioning holes and an abutting block, then the plug-in status is maintained reliably, but the device complexity increases
Solution Approach 1:
The connector position assurance element is designed to be self-positioning and self-locking. During insertion, the sliding portions automatically engage with the positioning blocks through the positioning holes, and the abutting block automatically engages with the buckling portion. This self-service mechanism maintains plug-in status reliably without requiring additional control systems or complex actuation mechanisms
Data Source
AI summary
A connector assembly includes a socket connector, and a plug connector with connector position assurance element inserted into the socket connector. The plug connector with connector position assurance element includes an insulating body, a plurality of terminals, a plurality of cables and a connector position assurance element. The insulating body defines a plurality of terminal slots. The plurality of the terminals are assembled in the plurality of the terminal slots. Two opposite ends of each terminal have a connecting end and a fitting end. The connecting ends of the plurality of the terminals are connected to the plurality of the cables. The connector position assurance element is inserted to a top of the insulating body, and then a plug-in status between the plug connector with connector position assurance element, and the socket connector is maintained.