Connector Position Assurance Element Deflects Beam for Mating Verification
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Solution Overview
Problem
Connector systems often unintentionally uncouple due to incomplete mating or external forces, leading to breaks in the conductive pathway, which can be difficult to detect and remediate, especially in complex assemblies like automobiles where small misalignments are hard to identify.
Innovation Solution
The introduction of a Connector Position Assurance (CPA) element that moves between extended and inserted positions, only allowing full insertion when the connectors are properly mated, providing tactile, visual, or audible feedback and supporting a secondary locking mechanism to prevent uncoupling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If connectors are designed with small size and shielded conductors, then the connector system achieves compactness and better shielding, but it becomes difficult to accurately recognize whether two mating connectors are fully mated together
Solution Approach 1:
The CPA element acts as an intermediary indicator between the connector mating status and the operator's perception. It translates the internal mating condition into an external visible signal, allowing accurate recognition of full mating despite the small size and shielded nature of the connectors themselves
Solution Approach 2:
The CPA element utilizes visual changes (such as color changes or position changes that are visible) to indicate the mating status. When connectors are fully mated, the CPA element changes its appearance or position to provide clear visual feedback, enabling accurate recognition without requiring the connectors themselves to be larger or less shielded
2Strength
If connectors rely on latch and catch engagement, then the connector system achieves secure coupling, but connectors may unintentionally uncouple due to latch release from external forces or incomplete mating
Solution Approach 1:
The CPA element provides continuous feedback about the mating status. It gives real-time information to the operator about whether full mating has been achieved and whether the connection remains stable, enabling immediate detection and correction of uncoupling events
Solution Approach 2:
The CPA element verifies mating status before the connection is considered complete. It ensures that full mating has been achieved before allowing the coupling mechanism to engage, preventing incomplete matings from proceeding to the secured state
3Reliability
If connectors are fully mated with precise alignment, then the conductive pathway remains intact, but it becomes difficult to identify and access faulty connections in complex assemblies
Solution Approach 1:
The CPA element serves as an accessible intermediary indicator that can be easily observed and manipulated, even when the actual connector connection is deep within or difficult to access in a complex assembly. It provides a remote indication of connection status that is easy to detect during inspection and repair operations
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 that connectors are fully mated and securely locked, preventing unintended uncoupling and providing assurance of a stable conductive pathway, simplifying the identification and correction of faulty connections in complex assemblies.
Implementation Method 1
The first beam is configured to be engaged by the mating connector and deflected from a blocked position to a clearance position as the mating connector is loaded into the cavity
Data Source
AI summary
An electrical connector includes a housing and a connector position assurance (CPA) element. The CPA element includes a beam that is deflected from a blocked position to a clearance position by a mating connector that is loaded into a cavity of the housing. When the beam is in the blocked position, movement of the CPA element from an extended position to an inserted position is mechanically blocked by a protrusion of the housing that abuts the beam. The beam of the CPA element, when moved to the clearance position, clears the protrusion to allow the CPA element to move from the extended position to the inserted position. The housing may include a pair of such deflectable beams, each with a slot having an opening at its distal end. The opening of one of the beams aligns with the protrusion when the beam is deflected to its clearance position.