Fan

The utility model provides a fan which comprises a fan frame, a motor, fan blades and a buckle, the fan frame is provided with a middle pipe, a shaft hole is formed in the middle pipe, and an annular groove formed in the radial direction in an inward concave mode is formed in the peripheral face of the middle pipe; the motor comprises a stator, a rotor, a rotor shell, a bearing and a rotating shaft, the stator sleeves the peripheral surface of the middle pipe, the bearing is matched in the shaft hole, and the rotating shaft is rotationally matched in the bearing; the rotor shell is connected to the rotor; the rotor is connected into the rotor shell and corresponds to the stator at an interval; the fan blades are connected to the rotor shell so as to rotate along with the rotor shell; the buckle is connected to the rotor shell and partially extends into the annular groove so as to be limited on the middle pipe in the axial direction, so that the buckle can limit the rotor shell, and the fan blades are effectiv