Rechargeable Smartwatch Strap for Waterproof Universal Charging
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Solution Overview
Problem
Existing smartwatches require dedicated chargers due to the lack of standard data interfaces, leading to inconvenience and reduced endurance during extended use.
Innovation Solution
A rechargeable smartwatch strap with a charging coil, port, and control circuit that allows direct charging via a universal charger, enabling the charging coil and watch body coils to form a loop for wireless charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard data interface is used for charging, then charging versatility is improved, but waterproof performance deteriorates
Solution Approach 1:
The charging function is segmented from the main watch body and integrated into the strap. The strap contains a separate charging coil and control circuit, allowing wireless charging without penetrating the watch case. This segmentation enables the use of standard wireless charging interfaces while maintaining the integrity of the waterproof seal on the watch body.
Solution Approach 2:
The strap acts as an intermediary device between the external wireless charging field and the watch body. The charging coil in the strap receives wireless power and transmits it to the watch through magnetic coupling, eliminating the need for physical data interfaces that would compromise waterproofing.
2Reliability
If a dedicated charger is used for each smartwatch, then charging reliability is improved, but device complexity increases
Solution Approach 1:
The strap is designed with a universal wireless charging interface that can receive power from any standard wireless charging source. The control circuit automatically detects and adapts to different charging standards, allowing a single strap design to work with multiple watch models and charging devices, thereby reducing the need for dedicated chargers.
3Duration of action of moving object
If the watch is used for extended periods without charging, then endurance is improved, but charging convenience deteriorates
Solution Approach 1:
The strap incorporates a built-in battery that can be independently charged via wireless power reception. When the watch needs charging, the strap's battery automatically provides power through the charging coil, eliminating the need for users to manually connect cables or switches. The system performs the charging operation autonomously, enhancing convenience despite extended usage periods.
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
Eliminates the need for dedicated chargers, providing convenient and efficient charging using a universal charger, thereby enhancing user experience.
Implementation Method 1
the charging coil and watch body coils to form a loop to achieve charging
Implementation Method 2
provided with a magnetic component in attraction fixation with the watch body during charging
Data Source
AI summary
The present invention provides a rechargeable smartwatch strap, where the smartwatch strap includes a first strap body; the first strap body is provided with a charging coil, a charging port, a flexible circuit, and a control circuit; the flexible circuit is connected to the charging coil and the charging port; the control circuit controls an external power supply to charge the watch body; when the control circuit controls charging of the external power supply, the watch body is charged via the charging port, the flexible circuit, and the charging coil. In use procedure, the first strap body is rotated to the bottom portion of the watch body; the charging coil and the charge receiving coil on the watch body just form a loop to achieve charging via a built-in battery or a universal charging port, thereby avoiding the inconvenience caused by a dedicated charger and improving the charging convenience.