公开(公告)号：US11289958B2

公开(公告)日：2022-03-29

申请号：US16592209

申请日：2019-10-03

Applicant: Delta Electronics, Inc.

Inventor： Wei-Hsiu Tai ,  Chien-Chung Shih ,  Chia-Hsiang Yang

IPC: H02K1/27 ,  H02K21/16 ,  H02K29/03 ,  H02K1/276

Abstract: A rotor lamination for a motor having a motor air gap width value is disclosed. The rotor lamination includes a main-body portion, a plurality of edges and a plurality of magnet-receiving slots. The main-body portion is centered at a central axis of the motor. The edges are disposed around outside of the main-body portion. The magnet-receiving slots accommodate a plurality of magnets of the motor and locate around the central axis. The magnet-receiving slot has a slot width value in an outward direction extending from the central axis. The magnet-receiving slot and the corresponding edge form a magnet depth value. The magnet depth value is greater than a sum value of a first rate constant multiplied by the slot width value and then subtracted the motor air gap width value, and is less than the sum value of the first rate constant multiplied by the slot width value and then plus the motor air gap width value.