US 12,273,014 B2
Motor
Cheng-Hsun Tsai, Taoyuan (TW); Che-Wei Shih, Taoyuan (TW); Guo-Han Tseng, Taoyuan (TW); and Shang-Mao Tsai, Taoyuan (TW)
Assigned to Delta Electronics, Inc., Taoyuan (TW)
Filed by Delta Electronics, Inc., Taoyuan (TW)
Filed on Sep. 20, 2022, as Appl. No. 17/948,987.
Claims priority of application No. 202220768153.0 (CN), filed on Apr. 6, 2022.
Prior Publication US 2023/0327517 A1, Oct. 12, 2023
Int. Cl. H02K 9/06 (2006.01)
CPC H02K 9/06 (2013.01) 14 Claims
OG exemplary drawing
 
1. A motor, comprising:
a rotor at least comprising a rotating shaft and an impeller, wherein the impeller couples with the rotating shaft and has a hub, the hub has an outer surface, an inner surface, a plurality of first through holes and a plurality of second through holes, the plurality of first through holes are disposed nearer the rotating shaft than the plurality of second through holes, and the plurality of first through holes and the plurality of second through holes penetrate the outer surface and the inner surface; and
a stator at least comprising a silicon steel sheet and a bearing assembly, wherein the silicon steel sheet has an annular portion and a plurality of protruding portions, the rotating shaft couples with the bearing assembly and penetrates within an inner hole of the annular portion, and the plurality of protruding portions are extended outward from the annular portion and have an extending length;
wherein the distance between each the first through hole and the nearest second through hole is in a range of 0.3 to 1.2 times of the extending length.