公开(公告)号：US20240106287A1

公开(公告)日：2024-03-28

申请号：US18334397

申请日：2023-06-14

Applicant: DELTA ELECTRONICS, INC.

Inventor： Chia-Yen CHIEN ,  Tzu-Ting HSU

IPC: H02K1/276 ,  H02K1/28 ,  H02K1/32 ,  H02K15/03 ,  H02K15/12

CPC classification number: H02K1/276 ,  H02K1/28 ,  H02K1/32 ,  H02K15/03 ,  H02K15/12

Abstract: A rotor structure includes a laminated silicon steel sheet structure, end plates, a shaft and a thermoset plastic key. Each silicon steel sheet includes a shaft hole and at least one sheet matching portion, and the sheet matching portion is connected to the shaft hole. The shaft passes through the shaft holes of the silicon steel sheets and the at least one shaft matching portions aligned with the at least one sheet matching portion to form an axial-direction injection passageway. The end plate includes an injection port connected to the axial-direction injection passageway. The thermoset plastic key is formed in the axial-direction injection passageway formed of the aligned shaft matching portions and sheet matching portion by transfer injection molding. The injection material is filled in magnet slots for securing magnets. A rotor manufacturing process is also provided.