Wearable Charging Interface Layout for Wet Short-Circuit Prevention
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Solution Overview
Problem
Wearable devices face the challenge of short circuits in charging interfaces due to water exposure, particularly in scenarios involving water contact during charging.
Innovation Solution
The charging interface features spaced mounting portions for the positive and negative terminals, with a gap and insulating barrier to prevent water connection, and a magnetic device for secure alignment, ensuring the terminals remain separate even when wet.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the charging interface is designed with closely spaced positive and negative terminals for compact structure, then the device size is reduced, but water can connect between terminals causing short circuits
Solution Approach 1:
The charging interface is segmented into separate mounting portions for positive and negative terminals, with each terminal isolated on its own mounting portion. This segmentation prevents water from connecting the terminals while maintaining a compact overall structure, as the mounting portions are integrated within a unified charging receptacle base.
Solution Approach 2:
An insulating barrier is introduced as an intermediary element between the positive and negative mounting portions. This insulating barrier physically blocks water from bridging the gap between terminals, ensuring electrical isolation while allowing the mounting portions to remain closely spaced for compact design.
2Reliability
If mounting portions are spaced apart with gaps to prevent water connection, then short circuit risk is reduced, but the charging interface structure becomes more complex
Solution Approach 1:
The insulating barrier is merged with the mounting portions to form an integrated waterproof structure. Rather than being a separate component, the insulating barrier is incorporated into the mounting portions themselves, simplifying the overall structure while maintaining the gap necessary for water prevention.
Solution Approach 2:
The mounting portions serve multiple functions: they provide mechanical support for the terminals, create the necessary spacing gaps for water prevention, and incorporate insulating barriers for electrical isolation. This multi-functionality reduces the need for additional separate components, thereby reducing structural complexity.
3Ease of operation
If the charging interface allows direct water contact for ease of use in wet environments, then user convenience is improved, but short circuits occur
Solution Approach 1:
The design converts the harmful effect of water into a beneficial feature by allowing water to freely contact the charging interface without causing short circuits. The spaced mounting portions with insulating barriers enable water to be present during charging (even submersion) while maintaining electrical isolation, thus converting the harm of water exposure into the benefit of waterproof charging capability.
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
Prevents short circuits by maintaining terminal separation, allowing safe charging even in wet conditions, expanding usage scenarios and enhancing user convenience.
Implementation Method 1
a magnetic device for secure alignment
Data Source
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AI summary
The present disclosure relates to a charging interface of a wearable device. The charging interface of the wearable device includes a charging receptacle and a charging terminal. The charging receptacle includes a charging receptacle base, a first mounting portion, a second mounting portion, and a third mounting portion. The first mounting portion, the second mounting portion, and the third mounting portion are connected to a first side of the charging receptacle base. The first side faces an exterior of the wearable device, and a third-party charging plug is connected to the charging interface from the first side. The first mounting portion and the second mounting portion are spaced apart, such that water present on a surface of the first mounting portion facing the charging plug and water present on a surface of the second mounting portion facing the charging plug are not connected. The charging terminal includes a positive terminal and a negative terminal. The positive terminal is mounted on the first mounting portion, and the negative terminal is mounted on the second mounting portion.