Transverse CPA Device for Connector Latch Reinforcement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing connector position assurance (CPA) devices are difficult to use in tight clearance applications, such as automotive, due to their high profile and limited accessibility for loading, and they only ensure engagement of the primary latch, lacking a secondary locking mechanism to prevent unintentional uncoupling.
Innovation Solution
An electrical connector system with a CPA device that translates transversely relative to the plug connector, providing a secondary lock by engaging a shoulder of the primary latch to prevent deflection and incorporating a locking post that forms a secondary lock with the header connector, ensuring full mating and reinforcement of the primary latch.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional CPA device is used to ensure latch engagement, then the primary latch engagement is verified, but the device has a high profile that makes it difficult to use in tight clearance applications
Solution Approach 1:
The CPA device is reoriented to translate in a direction transverse to the plug axis rather than parallel to it. This dimensional change allows the device to operate in tight clearance spaces where traditional CPA devices cannot fit, while still performing the essential function of verifying latch engagement through the deflectable retention latch mechanism
2Reliability
If a traditional CPA device is used to block latch deflection, then the primary latch is reinforced, but the device lacks a secondary locking mechanism to prevent unintentional uncoupling
Solution Approach 1:
The CPA device combines multiple functions into a single integrated mechanism: the deflectable retention latch verifies primary latch engagement, the same retention latch provides reinforcement by blocking deflection, and the locking post with slot engagement creates a secondary lock. This merging of functions eliminates the need for separate components while enhancing reliability
Solution Approach 2:
The CPA device is divided into distinct functional elements: the retention latch portion for verification and reinforcement, and the locking post portion for secondary locking. These segments work together but can be independently analyzed and manufactured, allowing for optimized design of each function while maintaining overall system simplicity
3Ease of operation
If the CPA device translates in the same plane as the primary latch, then the loading path is straightforward, but the device may be overlooked and improperly loaded due to lack of visual verification
Solution Approach 1:
By translating the CPA device in a direction transverse to the plug axis rather than parallel to it, the device creates a distinct loading path that is visually distinguishable from the connector mating process. This dimensional separation makes it clear when the CPA device has been properly loaded, eliminating the risk of it being overlooked or improperly installed
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
Ensures proper engagement and maintains electrical coupling by providing a secondary lock that prevents unintentional uncoupling, even in tight spaces, and reinforces the primary latch to withstand forces, enhancing the reliability of the connector system.
Implementation Method 1
The CPA device includes a deflectable retention latch having a head at a distal end thereof... the tab of the header connector deflects the retention latch of the CPA device to allow the CPA device to be translated
Implementation Method 2
the head of the retention latch is located behind the cross-member and the retention latch blocks deflection of the primary latch
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
An electrical connector system (100) is provided that includes a plug connector (102), a connector position assurance (CPA) device (116), and a header connector (104). The plug connector includes a housing (112) and a deflectable primary latch (110) that extends from the housing. The CPA device (116) is mounted to the plug connector (102) and is configured to translate relative to the plug connector (102). The header connector (104) has a latching surface that engages the primary latch (110) of the plug connector (102). When the plug connector (102) mates to the header connector (104), a tab of the header connector (104) deflects a retention latch of the CPA device (116) to allow the CPA device (116) to be translated in a locking direction to a locked position. The retention latch blocks deflection of the primary latch (110).