This technology is a power supply system that connects a power line to a moving sliding member, such as in a sliding smart window. It uses two fixed rotation axes and one movable rotation axis to guide the line, ensuring uninterrupted power delivery regardless of whether the window is opening or closing.
Smart windows using electrochromic devices change color and transparency via electrical current, allowing for sunlight control and energy savings in buildings and vehicles. However, existing technologies typically only allow for easy power connection when the window is closed, creating difficulties in maintaining power supply while the window is in motion.
When the sliding member moves away from the fixed rotation axes, the movable rotation axis shifts toward them to release line length; when it moves closer, the restoring force of an elastic member pulls the movable axis back to retract the slack. This restoring force is set to be less than the weight of the sliding member. Inside the line fixing member, the power line wraps around a support in a U-shape and is secured by a pin, keeping the length of the line beyond the pin constant regardless of movement. Applicable to sliding windows in buildings, vehicle sliding windows, and retrofit smart window kits, this system enables color control even when the window is partially open and reduces wire fatigue from repeated opening and closing.
This invention was developed with support from the Ministry of Land, Infrastructure and Transport for the development of core technology for high-strength electrochromic laminated glass based on UV-curable polymer chemical resin electrolytes.
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