Planetary Gear set Speed Cable Winder

This is a high-speed winder based on a planetary gearset, with a gear ratio of 1:3, achieving 3x winding speed. Typically, winding a 2-meter-long data cable with a conventional winder requires rotating 8-10 times, but with this device, you only need to turn it 3 times. Sounds great, but to achieve this, I had to put in a lot of effort. The first challenge was winding resistance. While using the gear ratio to increase the speed, the frictional resistance from the cable and the winder is also amplified and passed on to the user. After multiple attempts to reduce resistance, I finally adopted a design with two rollers added at the both side. This significantly reduces the frictional resistance when the cable retracts. Additionally, the 1:3 gear ratio is a well-balanced solution that has been validated multiple times. Testing shows that it can accommodate TPE hard super-fast charging data cables with a diameter of up to 5mm and a length of up to 2 meters.In terms of design, to highlight th