Mini axial fan with an improved core shaft structure
AssigneeChien-Chun Yu
InventorsChien-Chun Yu, Chung-Lung Yu, Yu-Ching Yang
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Abstract
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.
Claims6
A mini axial fan, comprising a fan housing and a fan unit mounted in said fan housing, wherein said fan unit comprises:
- a hub, said hub defining a backward hole;
- a plurality of blades formed integral with and radially arranged around the periphery of said hub;
- two axles respectively extending through the center of a front side and through the center of a back side of said hub and axially aligned with each other, each said axle having a free end and a blind hole axially defined in the free end;
- and
- two pins respectively press-fitted into the blind holes of said axles for rotatably supporting said fan unit in said fan housing.
Dependencies are inferred from the claim text.