Motor stator anti-interferences structure

Patent metadata

Field	Value
Publication number	US-11258335-B2
Application number	US-202016897278-A
Country	US
Kind code	B2
Filing date	Jun 10, 2020
Priority date	Jun 10, 2020
Publication date	Feb 22, 2022
Grant date	Feb 22, 2022

Abstract

A motor stator anti-interference structure includes: a silicon steel sheet assembly, the silicon steel sheet assembly including multiple silicon steel sheets held between an insulation support assembly; a winding assembly wound on the silicon steel sheet assembly and the insulation support assembly; and a connection member inlaid in the silicon steel sheet assembly to contact all the silicon steel sheets. All the silicon steel sheets are connected to a grounding end of a circuit board through the connection member so as to increase contact area between the connection member and the silicon steel sheet assembly. The electromagnetic interference is conducted through the connection member to the grounding end of the circuit board.

First claim

What is claimed is:

1. A motor stator anti-interference structure comprising:
a circuit board;
a silicon steel sheet assembly including multiple stacked silicon steel sheets, each silicon steel sheet being formed with a split, the splits being aligned with each other to together form a connection section;
a connection member connected with the connection section to contact all the silicon steel sheets, the connection member having a protrusion end protruding from the silicon steel sheet assembly;
an insulation support assembly disposed on an upper side and a lower side of the silicon steel sheet assembly, the protrusion end of the connection member protruding from the insulation support assembly to expose to outer side; and
a winding assembly wound on the silicon steel sheet assembly and the insulation support assembly, the winding assembly having a connection end, the connection end of the winding assembly and the protrusion end of the connection member being electrically connected with the circuit board.

2. The motor stator anti-interference structure as claimed in claim 1 , wherein the silicon steel sheet assembly includes a circular section and multiple pole sections radially distributed on outer circumference of the circular section, the connection section formed of the splits being positioned on the circular section.

3. The motor stator anti-interference structure as claimed in claim 1 , wherein the silicon steel sheet assembly includes a circular section and multiple pole sections radially distributed on outer circumference of the circular section, the connection section formed of the splits being positioned on one of the pole sections.

4. The motor stator anti-interference structure as claimed in claim 3 , wherein each pole section includes a magnetic pole and a magnetic pole face circumferentially extending from a free end of each magnetic pole, the connection section being positioned on the magnetic pole face.

5. The motor stator anti-interference structure as claimed in claim 1 , wherein the insulation support assembly includes an upper insulation support and a lower insulation support, the silicon steel sheet assembly being disposed between the upper and lower insulation supports, one of the upper and lower insulation supports being formed with an insulation support hole, the protrusion end of the connection member extending through the insulation support hole to expose to outer side.

6. The motor stator anti-interference structure as claimed in claim 1 , wherein the circuit board includes an electro-conductive end and a grounding end, the connection end of the winding assembly being connected with the electro-conductive end, the protrusion end of the connection member being connected with the grounding end.

7. A motor stator anti-interference structure comprising:
a silicon steel sheet assembly including multiple silicon steel sheets held between an insulation support assembly;
a connection member inlaid in the silicon steel sheet assembly having a contact section in contact with all the silicon steel sheets to increase contact area between the silicon steel sheet assembly and the connection member, the contact section having a protrusion end protruding from the silicon steel sheet assembly and the insulation support assembly to connect with a circuit board; and
a winding assembly wound on the silicon steel sheet assembly and the insulation support assembly, the winding assembly having a connection end connected with the circuit board.

8. The motor stator anti-interference structure as claimed in claim 7 , wherein the silicon steel sheet assembly includes a circular section and multiple pole sections radially distributed on outer circumference of the circular section, the connection section being inlaid in the circular section.

9. The motor stator anti-interference structure as claimed in claim 7 , wherein the silicon steel sheet assembly includes a circular section and multiple pole sections radially distributed on outer circumference of the circular section, the connection section being inlaid in one of the pole sections.

10. The motor stator anti-interference structure as claimed in claim 9 , wherein each pole section includes a magnetic pole and a magnetic pole face circumferentially extending from a free end of each magnetic pole, the connection section being inlaid in the magnetic pole face.

11. The motor stator anti-interference structure as claimed in claim 7 , wherein the insulation support assembly includes an upper insulation support and a lower insulation support, the silicon steel sheet assembly being disposed between the upper and lower insulation supports, one of the upper and lower insulation supports being formed with an insulation support hole, the protrusion end of the connection member extending through the insulation support hole to expose to outer side.

12. The motor stator anti-interference structure as claimed in claim 7 , wherein each silicon steel sheet is formed with a split, the splits being aligned with each other to together form a connection section, in which the connection member is inlaid.

Assignees

• Asia Vital Components China Co Ltd

Inventors

• Zhou Feng
• Lai Chih-Cheng

Classifications

• H02K11/01 Primary

  for shielding from electromagnetic fields {, i.e. structural association with shields} (means for preventing or reducing eddy-current losses in the winding heads by shielding H02K3/42) · CPC title

• H02K11/40

  Structural association with grounding devices · CPC title

• H02K11/014

  Shields associated with stationary parts, e.g. stator cores · CPC title

• H05K9/0088

  comprising a plurality of shielding layers; combining different shielding material structure · CPC title

• H02K3/522

  for generally annular cores with salient poles · CPC title