Single-bearing fan structure

Details Single-bearing fan structure Single-bearing fan structure

2009-04-20

2011-11-15

Tsai, H. Jey (Department: 2895)

Rotary kinetic fluid motors or pumps

Bearing, seal, or liner between shaft or shaft sleeve and...

C415S230000, C415S231000

Reexamination Certificate

active

08057173

ABSTRACT:
A single-bearing fan structure includes a fan frame having a bearing cup with a bearing received therein, the bearing cup having a radially inward protruded lip portion formed at a first end to abut on a top of the bearing, and a groove internally formed at a second end; a blade hub having a rotary shaft fixedly connected thereto with a distal end of the rotary shaft inserted into the bearing; a retainer engaged with the groove; a first elastic element fitted around the rotary shaft and located between the blade hub and the bearing; and a second elastic element received in the bearing cup and located between the bearing and the retainer. The first and second elastic elements and the bearing respectively axially and radially support the blade hub, enabling the fan structure to operate stably and have extended service life.

REFERENCES:
patent: 5562347 (1996-10-01), Hsieh
patent: 6416300 (2002-07-01), Tang et al.
patent: 6699020 (2004-03-01), Lin
patent: 2009/0016914 (2009-01-01), Chen et al.

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