Connector Position Assurance Device for Secure Terminal Alignment
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Solution Overview
Problem
Existing connector systems lack assurance mechanisms to securely engage male and female connector assemblies during transport and assembly, leading to potential misalignment and insecure terminal connections.
Innovation Solution
The implementation of terminal position assurance (TPA) devices for both male and female connector assemblies, along with a connector position assurance (CPA) device, which engage in pre-set or pre-lock positions to ensure secure alignment and locking of terminals during transport and assembly, ensuring full-lock positions for secure connections.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connector assemblies are transported without engagement assurance mechanisms, then transport simplicity is maintained, but misalignment and insecure terminal connections occur
Solution Approach 1:
The TPA devices are pre-engaged with the connector assemblies during manufacturing or assembly, ensuring they are ready to provide alignment and security assurance before transport or use. This preliminary engagement eliminates the need for complex engagement mechanisms during transport while maintaining connection integrity.
2Reliability
If TPA devices are engaged in pre-lock position during transport, then connection assurance is provided, but device complexity increases
Solution Approach 1:
The TPA devices are designed to automatically engage and maintain pre-lock or full-lock positions without requiring additional control mechanisms or external actuation. The devices self-regulate their engagement state, providing terminal position assurance through their inherent mechanical design rather than complex control systems.
3Reliability
If CPA device is used to lock male and female connector assemblies, then engagement security is improved, but assembly complexity increases
Solution Approach 1:
The CPA device combines multiple locking and alignment functions into a single integrated mechanism that simultaneously secures both male and female connector assemblies. By merging the locking and alignment functions into one device, the overall system complexity is reduced compared to using separate mechanisms for each function.
4Reliability
If terminals are secured with TPA devices in full-lock position, then connection security is improved, but manufacturing complexity increases
Solution Approach 1:
The TPA devices are pre-engaged with terminals in full-lock position during the manufacturing or assembly process, ensuring terminal connection security is established beforehand. This preliminary action eliminates the need for complex post-assembly adjustments or additional securing steps, actually simplifying the overall manufacturing process.
Data Source
AI summary
A connector position assurance (CPA) device for assuring and for informing a user of the engagement of a female connector assembly and a male connector assembly in a connector apparatus, and the connector apparatus having the female connector assembly and the male connector assembly engaged together, when in full-lock position, by the CPA. The female and male connector assemblies having a female terminal position assurance (TPA) device and a male terminal position assurance (TPA) device. During transport, the female TPA is engaged, in a pre-set position or a pre-lock position, to the female connector assembly, while the male TPA is engaged, in a pre-set position or a pre-lock position, to the male connector assembly. Also during transport, a connector position assurance (CPA) device is, at a pre-set position or a pre-lock position, with the female connector assembly (FIG. 13A). At least a set of terminals is provided into each of the male connector assembly and the female connector assembly when each of their respective male TPA and female TPA is at a pre-set position or a pre-lock position. The set of terminals provided for the male connector assembly is secured thereto when the male TPA thereof is placed at a full-lock position. Similarly, the set of terminals provided for the female connector assembly is secured thereto when the female TPA thereof is placed at a full-lock position. Thereafter, the male connector assembly and female connector assembly are engaged together, and the engagement thereof is assured when the CPA device is pushed downward and placed at a full-lock position (FIG. 13B) and when a leg of the CPA blocks the inward movement of a flexible member of the female connector assembly.