How is the driving circuit of shoe lights designed to adapt to the limited space and complex bending environment inside the shoe?
Publish Time: 2024-11-28
Behind the small and exquisite shoe lights, the driving circuit is like a "behind-the-scenes hero". It needs to "work hard" steadily in the cramped and dynamic environment inside the shoe, and exert unique design wisdom to meet the stringent requirements.Miniaturization is the primary strategy to adapt to limited space. Engineers tend to use surface mount electronic components, such as surface mount resistors, surface mount capacitors and micro integrated circuit chips, which are small in size and can be integrated into a small circuit board with high density. The "long legs" of traditional direct plug-in components will take up a lot of space, but surface mount components are "flattened" and rooted in the circuit board, leaving more "territory" for batteries, light guide components, etc. The layout of the circuit board is compact and regular, "tailored" according to the shape of the shoe lights, or winding on the inside of the upper, or fitting the edge of the sole, cleverly using every inch of gap.Flexible design to cope with complex bends. The circuit substrate abandons conventional rigid plates and adopts flexible printed circuit boards (FPCBs), which are based on flexible materials such as polyimide and covered with copper foil as a conductive layer. This substrate can be twisted and stretched as the shoes bend, and the internal circuit copper foil is finely etched into a winding pattern, similar to a "spring" structure, which buffers bending stress and eliminates the risk of breakage. At the connection point of the line, special elastic conductive glue or flexible connectors are used to ensure stable and retractable connections to ensure that the signal and current are "smooth all the way".To resist vibration and friction during walking, running and jumping, the circuit is tightly encapsulated. Silicone and heat shrink tubing are used for double protection. Silicone is soft and shock-absorbing, waterproof and moisture-proof, and wraps the key components; the heat shrink tubing is heated and shrunk to fit the circuit contour and strengthen mechanical protection, just like putting "soft hedgehog armor" on the circuit. In terms of circuit function realization, low-power, high-integration control chips are selected, integrating various functions such as dimming, color change, and induction triggering, streamlining the number of peripheral components, and achieving multiple effects with the simplest architecture, allowing shoe lights to "do a temple in a snail shell", firmly guarding the square inch, and shining every step.
