	US 12,237,735 B2
	Potting method of coreless motor, potting tooling thereof and coreless motor
Liwei Han, Suzhou (CN); Xiaotian Tan, Suzhou (CN); Wenji Geng, Suzhou (CN); and Xiaoshen Yan, Suzhou (CN)
Assigned to SUZHOU HEARTHILL MEDICAL TECHNOLOGY CO., LTD., Suzhou (CN)
Filed by SUZHOU HEARTHILL MEDICAL TECHNOLOGY CO., LTD., Jiangsu (CN)
Filed on Sep. 13, 2024, as Appl. No. 18/885,139.
Application 18/885,139 is a continuation of application No. PCT/CN2024/095089, filed on May 24, 2024.
Claims priority of application No. 202310619325.7 (CN), filed on May 30, 2023.
Prior Publication US 2025/0015691 A1, Jan. 9, 2025
Int. Cl. H02K 15/12 (2006.01); H02K 15/14 (2006.01)

CPC H02K 15/12 (2013.01) [H02K 15/14 (2013.01); H02K 2215/00 (2021.08); Y10T 29/49009 (2015.01)]

16 Claims

1. A potting method of a coreless motor, the coreless motor comprising a stator assembly, a rotor assembly, and a housing, the stator assembly being provided within the housing and being provided with a cavity extending in an axial direction therethrough, the rotor assembly being rotatably provided through the cavity, comprising the steps of:

a. providing the stator assembly and the housing, sleeving the housing on an outer wall of the stator assembly, and controlling two ends of the housing to extend out of two ends of the stator assembly in an axial direction;

b. providing potting tooling, wherein the potting tooling comprises a potting fixture, the potting fixture comprises a first potting fixture, the first potting fixture comprises a first potting head and a first potting shaft, and the first potting head and the first potting shaft are sequentially provided in an axial direction; the potting fixture comprises a second potting fixture, the second potting fixture comprises a second potting head and a second potting shaft, and the second potting head and the second potting shaft are sequentially provided in an axial direction;

c. inserting the first potting fixture and the second potting fixture into one end and the other end of the housing in an axial direction, respectively, so that the first potting head and the second potting head abut against the housing, and are provided at intervals from one end face and the other end face of the stator assembly, respectively, so that the first potting shaft and the second potting shaft are inserted into the cavity, and are provided at intervals from the inner wall of the stator assembly;

d. controlling an end face of the first potting shaft and an end face of the second potting shaft to abut against each other; forming a potting space between the potting fixture, two end faces of the stator assembly and the inner wall of the stator assembly;

e. injecting glue into the potting space via the first potting head and the second potting head to form an encapsulation layer to encapsulate the stator assembly on an inner wall of the housing.