Connector Position Assurance Device Premature Sliding Prevention
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Solution Overview
Problem
Existing connector position assurance devices cannot completely prevent inadvertent movement to the caught position when connectors are not mated, despite enhanced restraining mechanisms.
Innovation Solution
A connector design with a CPA that slides to a caught position only when completely mated, featuring a pressed-back portion and interference structures to ensure accurate mating, including a beam portion that elastically deforms and a pressed-back portion to prevent premature movement to the caught position.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the connector position assurance device is restrained from sliding to the caught position by both abutment against the abutting portion and resisting force of the anti-sliding portion, then the connector position assurance device is strongly restrained from moving inadvertently to the caught position when connectors are not mated, but the possibility that the connector position assurance device may move inadvertently to the caught position when connectors are not mated cannot completely be eliminated
Solution Approach 1:
The beam portion is pre-configured in a state ready to elastically deform and press the connector position assurance device back to the temporary caught position. This preliminary arrangement ensures that if the CPA inadvertently moves to the caught position before mating, the beam portion will automatically correct it during the mating process, eliminating the need for complex additional restraint mechanisms.
Solution Approach 2:
The beam portion utilizes elastic deformation as a parameter change mechanism. When the connectors mate, the beam portion elastically deforms to press the CPA back to the temporary caught position. This dynamic parameter change (from rigid to elastic state) provides a simple yet effective way to ensure the CPA is in the correct position at complete mating, resolving the contradiction between reliability and complexity.
2Measurement precision
If the connector position assurance device is allowed to slide to the caught position only when completely mated, then accurate mating indication is achieved, but inadvertent sliding to the caught position when not mated may occur
Solution Approach 1:
The beam portion acts as a feedback mechanism that monitors the mating status. When the connectors are completely mated, the beam portion elastically deforms and presses the CPA back to the temporary caught position, providing feedback that ensures the CPA is in the correct position for accurate mating indication. This feedback loop maintains reliability while allowing the CPA to slide to the caught position only under proper mating conditions.
Solution Approach 2:
The system transitions from a static restraint mechanism to a dynamic one where the beam portion can elastically deform. This dynamic behavior allows the CPA to freely slide to the caught position when not mated (maintaining measurement precision) while the beam portion's elastic deformation during mating ensures the CPA is correctly positioned (maintaining reliability).
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 complete mating by preventing inadvertent sliding to the caught position and providing a clear indication of mating status through visual confirmation, while allowing for correct mating even if the CPA is initially in the caught position.
Implementation Method 1
a beam portion that elastically deforms and a pressed-back portion to prevent premature movement to the caught position
Data Source
AI summary
A connector includes a housing and a connector position assurance device positioned in a temporary caught position on the housing when the connector is not mated with a mating connector. The connector position assurance device is allowed to slide to a caught position in front of the temporary caught position in a mating direction when the connector is completely mated with the mating connector. The connector position assurance device assures that the connectors are completely mated in the caught position. The connector position assurance device has a pressed-back portion abutted by the mating connector during mating and pressed back relative to the housing if the connector position assurance device is positioned in the caught position when the connector starts to mate with the mating connector, positioning the connector position assurance device in the temporary caught position at a complete mating of the connector with the mating connector.