Detect Pin Relocation for USB PD Connector Compatibility
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Solution Overview
Problem
Current USB PD receptacles with detect pins are not adaptable for sink type or stacked type connectors due to their placement in the center of the receiving space, which is not compatible with the longer shell of USB PD plugs.
Innovation Solution
An electrical connector design featuring detect pins located on opposite sides of the mating tongue within the receiving cavity, allowing them to connect electrically with the shell of the USB PD plug without occupying the bottom space, enabling compatibility with both sink and stacked types.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If detect pins are placed in the center of the bottom of the receiving space, then power delivery detection function is achieved, but compatibility with sink type and stacked type connectors is lost
Solution Approach 1:
The detect pins are repositioned from the bottom center (vertical dimension) to the rear side walls (horizontal dimension) of the receiving space. This dimensional relocation allows the detect pins to detect USB PD plugs without occupying the bottom space, thereby maintaining both detection functionality and compatibility with various connector types.
2Reliability
If detect pins are positioned to detect USB PD plug insertion, then power delivery detection is enabled, but space occupation interferes with bottom space utilization
Solution Approach 1:
The detect pins are extracted from the bottom center position and relocated to the rear side walls of the receiving space. This extraction removes the conflict between detection functionality and bottom space utilization, allowing both purposes to coexist without interference.
3Length of moving object
If the shell length is increased for USB PD plug, then power delivery function is enhanced, but detect pin actuation becomes inconsistent across different plug types
Solution Approach 1:
The detect pins are positioned at specific locations on the rear side walls of the receiving space, creating localized detection zones. This local positioning ensures that only plugs with sufficient length (USB PD plugs) can actuate the detect pins, while shorter plugs cannot, providing reliable differentiation based on local geometric properties.
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
Enables the detection of USB PD plug insertion without interfering with the bottom space, allowing for proper power delivery and compatibility with various connector types, including sink and stacked configurations.
Implementation Method 1
both the two detect pins are located at a rear of the receiving cavity and are capable of electrically connecting with each other via the shell of the mating plug
Data Source
AI summary
An electrical connector comprises an insulative housing, a metallic shell surround the insulative housing, a plurality of contacts and two detect modules retained to the metallic shell. The insulative housing is formed with a base and a tongue extending forwardly from the base. The shell and the insulative housing define a receiving cavity therebetween. The detect module have a detect pin, respectively, the detect pins extend into the receiving cavity through the shell and electrically connecting with each other via a shell of a mating plug.