Patent ID: 11920601
Assignee: AMOTECH CO., LTD.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  H | IPC F  H

Claim 3:
4. The cooling fan of claim 3, further comprising:
a bearing housing in which a stator is fixed to an outer circumferential portion thereof and upper and lower bearings for rotatably supporting the rotation shaft are installed in an inner circumferential portion thereof;
a first extension portion extending downward along a lower end of the bearing housing from a through hole formed in the center of the circular plate portion of the PCB housing box to increase an area in contact with the lower end of the bearing housing; and
a second extension portion formed to extend upward along the lower end of the bearing housing from a through hole formed in the center of the cover coupled to a bottom surface of the PCB housing box.