| 摘要 |
A fan includes a frame, a rotor, a stator, a printed circuit board (PCB), and a water-proof structure. The frame includes a base, a first opening, and a second opening corresponding to the first opening. The base is located at the center of the frame near the second opening. The stator is disposed on the base of the frame. The rotor is disposed in the frame and coupled to the stator. The water-proof structure includes a protection cover and a seal ring. The protection cover is connected with the base, and the PCB is disposed in a closed space formed by the protection cover and the base. The protection cover has an annular wall and the seal ring is disposed around the outer surface of the annular wall of the protection cover.
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