Wire-Wound Speed Reducer for Low-Backlash Robot Power Transmission

The patent replaces conventional mechanical speed reduction mechanisms (gears, belts) with a wire-based tension system. Wires are wound around the input shaft and connected to wire holders on the output shaft, creating a tension-based power transmission system that eliminates complex mechanical components while maintaining reliable power transmission.

The patent uses flexible wires instead of rigid mechanical components. The wires are wound around the input shaft and extend to wire holders, utilizing the flexibility and tensile strength of the wires to transmit power and achieve speed reduction without requiring complex rigid mechanical structures.

The patent employs relatively simple and inexpensive components such as wires, wire holders, and basic shafts instead of costly precision-machined gear sets. These components can be manufactured using standard processes and assembled straightforwardly, significantly reducing manufacturing cost and time while maintaining functional reliability.

The speed reducer is divided into simple, modular components: input shaft, output shaft, wires, wire holders, and bearing support. Each component can be manufactured independently using standard processes and assembled through straightforward connection, reducing overall manufacturing complexity and cost.

The patent replaces meshing mechanical components (gears) that generate noise and backlash with a tension-based wire system. The wires maintain continuous tension between the input and output shafts, eliminating the impact and clearance issues inherent in gear meshing, thereby reducing noise and backlash while achieving torque reduction.

The wire tensioning system inherently provides cushioning by maintaining continuous tension. The wires can absorb and dampen shocks and vibrations before they propagate through the system, reducing noise and preventing the sudden impacts that cause backlash in conventional gear systems.