MINI AXIAL FAN WITH AN IMPROVED CORE SHAFT STRUCTURE

摘要

A mini axial fan includes a fan housing and a fan unit, which is mounted in the fan housing. The fan unit has a hub with integrated blades around the periphery and integrated axles at front and back sides, and two metal pins respectively press-fitted into a respective blind hole in the free end of each of the axles for rotatably supporting the fan unit on a respective bearing in the fan housing. The fan unit is injection molded from plastics and then the metal pins are installed in the fan unit so that the precision of the metal pins is maintained and the manufacturing cost of the fan unit is reduced.