BEARING HOLDING STRUCTURE AND FAN MODULE USING SAME

摘要

A fan module includes a frame; a fan wheel; and a bearing holding structure having a hollow bearing cup, an elastic member, and a bearing. The frame has a base, on a center of which the hollow bearing cup is formed. A portion of an inner wall surface of the hollow bearing cup is radially inward protruded, forming a shoulder portion between the inner wall surface and the protruded portion. The elastic member includes a first and a second section tightly bearing on the shoulder portion and the inner wall surface, respectively, and the bearing is tightly supported on the elastic member. The fan wheel has a shaft extended through the bearing and is therefore rotatably mounted on the base and located in the frame. With the elastic member, the bearing is tightly received in the hollow bearing cup without colliding therewith, and stable operation of the bearing is ensured.