Thin axial gap motor

Patent metadata

Field	Value
Publication number	US-10084352-B2
Application number	US-201414580413-A
Country	US
Kind code	B2
Filing date	Dec 23, 2014
Priority date	Feb 27, 2014
Publication date	Sep 25, 2018
Grant date	Sep 25, 2018

Abstract

A thin axial gap motor includes: a base, a circuit unit installed on the base; a stator module including at least one flat permeable frame and at least one winding, and the permeable frame having at least one support arm and an induced magnetic part connected to the at least one support arm, and the winding being wound around the support arm; a rotor module including a flat permanent magnet installed at the top of the induced magnetic parts and having an orthographic projection range corresponsive to the area of the induced magnetic part, and the at least one winding being disposed on an outer side of the permanent magnet; and a pivoting element installed between the base and the rotor module and including a bearing housing and a spindle plugged into the bearing housing for rotating the rotor module with respect to the base.

First claim

What is claimed is:

1. A thin axial gap motor, comprising:
a base;
a circuit unit, installed on the base;
a stator module, including at least one flat permeable frame and at least one winding, and the permeable frame having at least one support arm and a plurality of induced magnetic parts coupled to the at least one support arm, and the winding being wound around the support arm;
a rotor module being rotatable relative to the stator module, including a flat permanent magnet installed at the top of the plurality of induced magnetic parts along a rotating axis between the rotor module and the stator module, and the permanent magnet having an orthographic projection range, and the orthographic projection range being along the rotating axis between the rotor module and the stator module and corresponsive to the area of the induced magnetic parts, and the at least one winding being situated on an external side of the permanent magnet; and
a pivoting element, installed between the base and the rotor module, and including a bearing housing and a spindle plugged into the bearing housing for rotating the rotor module with respect to the base;
wherein the support arm is substantially U-shaped and includes an external arm part and a pair of connecting arm parts, and one of the ends of each connecting arm part is coupled to both ends of the external arm part, and the other end of each connecting arm part is coupled to one of the induced magnetic parts;
wherein each external arm part has a winding wound around the external arm part, and the plurality of induced magnetic parts are arranged into a circular ring shape, and each permanent magnet is in a circular ring shape.

2. A thin axial gap motor, comprising:
a base;
a circuit unit, installed on the base;
a stator module, including at least one flat permeable frame and at least one winding, and the permeable frame having at least one support arm and a plurality of induced magnetic parts coupled to the at least one support arm, and the winding being wound around the support arm;
a rotor module being rotatable relative to the stator module, including a flat permanent magnet installed at the top of the plurality of induced magnetic parts along a rotating axis between the rotor module and the stator module, and the permanent magnet having an orthographic projection range, and the orthographic projection range being along the rotating axis between the rotor module and the stator module and corresponsive to the area of the induced magnetic parts, and the at least one winding being situated on an external side of the permanent magnet; and
a pivoting element, installed between the base and the rotor module, and including a bearing housing and a spindle plugged into the bearing housing for rotating the rotor module with respect to the base;
wherein the support arm is substantially U-shaped and includes an external arm part and a pair of connecting arm parts, and one of the ends of each connecting arm part is coupled to both ends of the external arm part, and the other end of each connecting arm part is coupled to one of the induced magnetic parts;
wherein the winding is wound around each respective connecting arm part, and the plurality of induced magnetic parts are arranged into a circular ring shape, and each permanent magnet is in a circular ring shape.

3. The thin axial gap motor of claim 1 , wherein the bearing housing is fixed to the center of the permanent magnet, and the base has an axial hole formed thereon, and the bottom of the spindle is soldered and fixed to the axial hole, and the bearing housing is installed upside down and sheathed on the spindle.

4. The thin axial gap motor of claim 1 , wherein the circuit unit includes a circuit board, and at least one electronic component installed on the circuit board, and the stator module is installed on the circuit board of the circuit unit, and the circuit board has a wire containing hole formed thereon for receiving a part of the winding.

5. The thin axial gap motor of claim 4 , wherein the base has an opening formed thereon and configured to be corresponsive to the wire containing hole, and a part of the winding is disposed in the opening.

6. The thin axial gap motor of claim 1 , wherein the stator module includes a plurality of induced magnetic parts arranged into a circular ring shape, and a separating groove is formed between two of the adjacent induced magnetic parts, and an included angle is defined between the plurality of separating grooves and the diameter of the spindle.

7. The thin axial gap motor of claim 1 , wherein the stator module includes a plurality of induced magnetic parts arranged into a circular ring shape, and a magnetic field changing part is formed on a surface of each induced magnetic part.

8. The thin axial gap motor of claim 7 , wherein the magnetic field changing part is formed by bending an edge of the induced magnetic part upwardly.

9. The thin axial gap motor of claim 7 , wherein the magnetic field changing part is formed by punching the top of the induced magnetic part upwardly.

10. The thin axial gap motor of claim 2 , wherein the bearing housing is fixed to the center of the permanent magnet, and the base has an axial hole formed thereon, and the bottom of the spindle is soldered and fixed to the axial hole, and the bearing housing is installed upside down and sheathed on the spindle.

Assignees

• Cooler Master Co Ltd

Inventors

• Tsai Shui-Fa
• Huang Shih-Wei
• Kuo Chu-Yi

Classifications

• H02K1/143 Primary

  of the horse-shoe type · CPC title

• H02K7/09

  with magnetic bearings · CPC title

• H02K1/2793

  Rotors axially facing stators · CPC title

• H02K21/24 Primary

  with magnets axially facing the armatures, e.g. hub-type cycle dynamos · CPC title

• H02K7/086

  radially supporting the rotor around a fixed spindle; radially supporting the rotor directly (H02K7/09 takes precedence) · CPC title