COOLING FAN BEARING RETAINER RING STRUCTURE

摘要

A cooling fan bearing retainer ring structure includes: a bearing seat having a bearing cup perpendicularly extending from one side of the bearing seat, the bearing cup having an upper end, a lower end and a first shaft hole, a protrusion section being formed on inner circumference of the bearing cup near the upper end of the bearing cup and radially protruding toward a center thereof; a retainer ring disposed in the first shaft hole and having a first side in abutment with the protrusion section, a second side, a central hole and at least one retainer tongue annularly disposed in the central hole; and a bearing positioned in the first shaft hole in tight contact with the retainer ring. The bearing has a first end in abutment with the second side of the retainer ring, a second end and a second shaft hole axially extending through the bearing.