Circuit board for stator windings having integral securing structures

Patent metadata

Field	Value
Publication number	US-12401245-B2
Application number	US-202017789547-A
Country	US
Kind code	B2
Filing date	Dec 10, 2020
Priority date	Jan 10, 2020
Publication date	Aug 26, 2025
Grant date	Aug 26, 2025

Abstract

A stator of an electric motor includes a stator core having a plurality of teeth. A printed circuit board (PCB) is fixed with respect to the stator and includes a plurality of soldering structures defined within a surface of the printed circuit board. A winding set is disposed on the teeth. The winding set includes at least one wire that is wound around the teeth to at least partially define stator poles. Each wire of the winding set includes opposing ends that are attached to the printed circuit board at a dedicated soldering structure of the plurality of soldering structures.

First claim

What is claimed is:

1. A stator of an electric motor, the stator comprising:
a stator core having a plurality of teeth;
a printed circuit board (PCB) that is fixed with respect to the stator and includes a plurality of soldering structures defined within a surface of the PCB; and
a winding set that is disposed on the plurality of teeth, wherein the winding set includes at least one wire that is wound around the plurality of teeth to at least partially define stator poles, wherein each wire of the winding set includes opposing ends that are attached to the PCB at a dedicated soldering structure of the plurality of soldering structures, wherein the plurality of soldering structures are defined at an edge of the PCB and wherein each soldering structure includes a securing notch that is defined within the edge of the PCB, and wherein the stator core includes aligning towers that are aligned with a respective securing notch of the plurality of soldering structures.

2. The stator of claim 1 , wherein each securing notch is aligned with a corresponding soldering pad, wherein each corresponding soldering pad is pre-tinned.

3. The stator of claim 2 , wherein each securing notch of the plurality of soldering structures is configured to position the at least one wire in a soldering position so that the at least one wire can be stripped and soldered to the corresponding soldering pad, while the at least one wire is retained in a respective securing notch.

4. The stator of claim 3 , wherein each securing notch is configured to extend more than 180 degrees around an insulation layer of the at least one wire to secure the at least one wire in the soldering position.

5. The stator of claim 2 , wherein the corresponding soldering pads are pre-tinned during a Surface Mount Technology (SMT) Process.

6. The stator of claim 1 , wherein each aligning tower includes a wire-receiving interior channel that positions the at least one wire in alignment with the respective securing notch, and wherein the at least one wire is a continuous wire that is free of intermediary terminals.

7. The stator of claim 6 , wherein the at least one wire extends from a first dedicated soldering structure of the PCB, around the plurality of teeth of the stator core and to a second dedicated soldering structure of the PCB.

8. A stator of an electric motor, the stator comprising:
a stator core having a plurality of teeth;
a printed circuit board (PCB) attached to the stator core and having a plurality of soldering structures defined therein; and
a winding set made up of at least one wire, wherein each wire of the at least one wire extends from a first end that is attached to a first soldering structure of the plurality of soldering structures, around at least a portion of the plurality of teeth and to a second end that is attached to a second soldering structure of the plurality of soldering structures, wherein each wire is a continuous section of wire that is free of intermediate terminals.

9. The stator of claim 8 , wherein the plurality of soldering structures are defined at an edge of the PCB and wherein each soldering structure includes a securing notch that is defined within the edge of the PCB.

10. The stator of claim 9 , wherein each securing notch is aligned with a corresponding soldering pad.

11. The stator of claim 10 , wherein the respective securing notch is configured to selectively fix a portion of the at least one wire in a soldering position in relation to the corresponding soldering pad, wherein the soldering position is characterized by the at least one wire being located to allow for stripping and soldering while the at least one wire is in the soldering position.

12. The stator of claim 10 , wherein each of the corresponding soldering pads are incorporated within respective soldering structures of the plurality of soldering structures.

13. The stator of claim 10 , wherein each corresponding soldering pad is pre-tinned, and wherein each corresponding soldering pad is pre-tinned during a Surface Mount Technology (SMT) Process.

14. The stator of claim 8 , wherein the at least one wire extends from a first dedicated soldering structure of the PCB, around the plurality of teeth of the stator core and to a second dedicated soldering structure of the PCB.

15. An electric motor comprising:
a printed circuit board (PCB);
a wire-securing structure that is positioned proximate the PCB;
a stator having a plurality of poles; and
a wire that extends from a first end attached to the PCB at a first soldering pad, through a first portion of the wire-securing structure, around at least a portion of the poles of the plurality of poles, through a second portion of the wire-securing structure and to a second end attached to the PCB at a second soldering pad, wherein the wire includes a continuous and uninterrupted conductor.

16. The stator of claim 15 , wherein the wire-securing structure is at least partially defined within an edge of the PCB.

17. The stator of claim 15 , wherein each of the first and second soldering pads are positioned adjacent respective securing notches of the wire-securing structure, the respective securing notches being defined within an edge of the PCB, wherein the first and second soldering pads are pre-tinned during a Surface Mount Technology (SMT) Process.

18. The stator of claim 17 , wherein the wire-securing structure further includes aligning towers that are positioned in alignment with the respective securing notches of the PCB, wherein each aligning tower includes an interior channel that positions the wire in alignment with the respective securing notches.

19. The stator of claim 17 , wherein the respective securing notches are configured to selectively fix the first and second ends of the wire in a soldering position in relation to the PCB, wherein the soldering position is characterized by the first and second ends of the wire being oriented to allow for stripping and soldering of the wire while the first and second ends of the wire are in the soldering position.

20. The stator of claim 17 , wherein the respective securing notches are configured to extend more than 180 degrees around an insulation layer of the wire to secure the wire in a soldering position.

Assignees

• Ghsp Inc

Inventors

• Mitteer David Michael
• Vecellio Bradley John

Classifications

• H05K2201/1009

  Electromotor · CPC title

• H05K1/181

  associated with surface mounted components · CPC title

• H02K1/16

  Stator cores with slots for windings · CPC title

• Y02P70/50

  Manufacturing or production processes characterised by the final manufactured product · CPC title

• H05K2201/09163

  Slotted edge · CPC title