US 12,467,465 B2
Fan motor
Eunji Hwang, Seoul (KR); Byungjik Kim, Seoul (KR); Sunggi Kim, Seoul (KR); and Jisu Hwang, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Filed by LG Electronics Inc., Seoul (KR)
Filed on Oct. 17, 2023, as Appl. No. 18/488,445.
Claims priority of application No. 10-2022-0164688 (KR), filed on Nov. 30, 2022.
Prior Publication US 2024/0178717 A1, May 30, 2024
Int. Cl. F04D 25/06 (2006.01); F04D 25/08 (2006.01); F04D 29/059 (2006.01); F16C 35/077 (2006.01); H02K 5/16 (2006.01)
CPC F04D 25/062 (2013.01) [F04D 25/082 (2013.01); F04D 29/059 (2013.01); F16C 35/077 (2013.01); F16C 2360/46 (2013.01); H02K 5/16 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A fan motor comprising:
a rotating shaft;
an impeller coupled to the rotating shaft;
a motor, including:
a rotor coupled to the rotating shaft, and
a stator surrounding the rotor and configured to drive the rotating shaft;
a bearing that supports the rotating shaft;
a bearing housing that accommodates the bearing therein;
a preload applying device disposed between one axial end of the bearing and the bearing housing and configured to apply a force to the one axial end of the bearing; and
a bush coupled to an outer circumferential surface of the bearing and disposed at an inner circumferential surface of the bearing housing, the bush being configured to move in an axial direction,
wherein a protrusion is provided at one axial end of the bush, and a protrusion accommodating groove is provided at an inner surface of the bearing housing,
wherein the bush has a cylindrical shape,
wherein the bush is formed by rolling a rectangular plate having a set thickness into a circular shape, and
wherein an opening is defined between both ends of the rectangular plate in a circumferential direction.