US US2021167660A1
[0001] A high-speed fan motor includes an air duct motor casing, fan blades, a motor stator, a motor rotating shaft, a rear end cover, and a Printed Circuit Board (PCB). The motor stator is installed in the air duct motor casing, the plurality of arc-shaped radial positioning plates surround the periphery of the motor stator, one end of the rear end cover is axially connected to the motor stator and/or the air duct motor casing. the plurality of arc-shaped radial positioning plates and the rear end cover surround to form an installation structure for installing the motor stator. first bearing and a second bearing are provided at two ends of the motor rotating shaft, respectively. And a first damping bushing and a second damping bushing are installed in the first bearing chamber and the second bearing chamber, respectively.
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