CN214590829U - Magnetic steel fixing structure of motor rotor - Google Patents
Magnetic steel fixing structure of motor rotor Download PDFInfo
- Publication number
- CN214590829U CN214590829U CN202121153137.2U CN202121153137U CN214590829U CN 214590829 U CN214590829 U CN 214590829U CN 202121153137 U CN202121153137 U CN 202121153137U CN 214590829 U CN214590829 U CN 214590829U
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- Prior art keywords
- magnet steel
- magnetic steel
- coating
- temperature expansion
- high temperature
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 92
- 239000010959 steel Substances 0.000 title claims abstract description 92
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 239000011248 coating agent Substances 0.000 claims abstract description 33
- 239000000463 material Substances 0.000 abstract description 10
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000001816 cooling Methods 0.000 abstract description 3
- 238000007711 solidification Methods 0.000 abstract description 3
- 230000008023 solidification Effects 0.000 abstract description 3
- 230000005389 magnetism Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000001746 injection moulding Methods 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 229910000976 Electrical steel Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a motor rotor's magnet steel fixed knot constructs, including rotor core and magnet steel, a plurality of magnetism steel slots have been seted up on the rotor core, the magnet steel has been inserted in the magnet steel slot, the height that the magnet steel is slightly less than the magnet steel slot height, the coating of magnet steel surface has the high temperature expansion coating, this fixed knot constructs through the high temperature expansion coating of coating on the magnet steel surface, this coating utensil single high temperature expansion and the characteristic of cooling back expansion effect solidification, utilize the expansibility of this high temperature expansion coating to fill the gap between magnet steel and the magnet steel slot on the rotor core, make magnet steel and magnet steel slot pass through expanding material and combine closely, realize the purpose of fixed magnet steel, the production technology is simplified, material and manufacturing cost have been reduced.
Description
Technical Field
The utility model relates to an automobile drive motor field especially relates to rotor magnet steel fixed technology, specifically is an electric motor rotor's magnet steel fixed knot constructs.
Background
With the rapid development of the new energy automobile industry, the price competition of automobiles and even parts is intensified day by day. The internal permanent magnet synchronous motor is mainly used as a domestic new energy automobile driving motor, and the internal permanent magnet synchronous motor is used as magnetic steel of important parts of the motor and plays a main role in playing motor performance. In the prior art, the epoxy material injection molding mode is mostly adopted to fill all the magnetic steel groove gaps to achieve the effect of fixing the magnetic steel, the problems of large material consumption and high material cost exist, and a specific injection mold and a tool are required to be matched, so that the processing technology is complex, the manufacturing cost is high, and the production efficiency is low. The injection molding process is adopted to limit the size of the rotor magnetic steel structure and the design of the rotor segmented oblique poles, and is not beneficial to the optimization of the motor performance.
Disclosure of Invention
An object of the utility model is to provide an electric motor rotor's magnet steel fixed knot constructs, through at magnet steel surface coating high temperature expansion coating, the solidification's of expansion effect characteristic after this coating utensil single high temperature expansion and cooling, utilize the expansibility of this high temperature expansion coating to fill the gap between magnet steel and the magnet steel groove on the rotor core, make magnet steel and magnet steel groove pass through expanding material and combine closely, realize the purpose of fixed magnet steel, simplified production technology, reduced material and manufacturing cost.
The utility model discloses a this kind of electric motor rotor's magnet steel fixed knot constructs, including rotor core and magnet steel, a plurality of magnet steel grooves have been seted up on the rotor core, the magnet steel inslot has inserted the magnet steel, the height of magnet steel slightly is less than the magnet steel groove height, the coating of magnet steel surface has the high temperature expansion coating.
Furthermore, the upper surface of the magnetic steel is coated with a high-temperature expansion coating.
Furthermore, high-temperature expansion coatings are coated on the upper surface and the lower surface of the magnetic steel.
Furthermore, high-temperature expansion coatings are coated on the upper surface, the lower surface, the left surface and the right surface of the magnetic steel.
Furthermore, six surfaces of the magnetic steel are coated with high-temperature expansion coatings.
The utility model discloses a theory of operation is: after the magnetic steel is processed into a required size, a high-temperature expansion coating is coated on one or more surfaces of the magnetic steel, which are in contact with the rotor silicon steel sheet, according to design selection, the coating material has the characteristics of expanding in a high-temperature environment and maintaining an expansion state after the temperature is reduced, and a reasonable coating thickness can be designed according to a gap between the magnetic steel and a magnetic steel groove and the expansion rate of the coating.
In particular, the high temperature expansion coating described in the present invention is known in the art, and is known to those skilled in the art, and will not be described herein.
Compared with the prior art, the utility model, its effect is positive and obvious. The utility model discloses a coating a high temperature expansion coating on magnet steel surface, this coating utensil single high temperature expansion and cooling back expansion effect solidification's characteristic, utilize the expansibility of this high temperature expansion coating to fill the gap between magnet steel and the magnet steel groove on the rotor core, make magnet steel and magnet steel groove pass through expanded material and closely combine, realize the purpose of fixed magnet steel, simplified production technology, reduced material and manufacturing cost.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
FIG. 2 is a schematic structural diagram of a high-temperature expansion coating coated on the upper surface of magnetic steel.
FIG. 3 is a schematic structural diagram of a magnetic steel with high temperature expansion coating on its upper and lower surfaces.
FIG. 4 is a schematic structural diagram of a magnetic steel with four surfaces, upper, lower, left and right, coated with high temperature expansion coatings.
FIG. 5 is a schematic diagram of the magnetic steel and the magnetic steel groove state structure before and after the expansion of the high temperature expansion coating.
Detailed Description
Example 1:
as shown in fig. 1 to 5, the utility model discloses an electric motor rotor's magnet steel fixed knot constructs, including rotor core 1 and magnet steel 2, a plurality of magnet steel grooves 3 have been seted up on rotor core 1, and magnet steel 2 has been inserted in magnet steel groove 3, and magnet steel 2's height slightly is less than magnet steel groove 3 height, and magnet steel 2 surface coating has high temperature expansion coating 4.
Further, the upper surface of the magnetic steel 2 is coated with a high-temperature expansion coating 4.
Furthermore, the upper surface and the lower surface of the magnetic steel 2 are coated with high-temperature expansion coatings 4.
Further, the upper surface, the lower surface, the left surface and the right surface of the magnetic steel 2 are coated with high-temperature expansion coatings 4.
Furthermore, six surfaces of the magnetic steel 2 are coated with high-temperature expansion coatings 4.
And magnetic steel 2 coated with a high-temperature expansion coating 4 is inserted into a magnetic steel groove 3 of the rotor core 1. The rotor core 1 inserted into the magnetic steel 2 is heated to the required temperature, and is kept warm for a period of time at the temperature, so that the coating 4 on the surface of the magnetic steel 2 is fully expanded, after the gap between the magnetic steel 2 and the magnetic steel groove 3 is completely filled, the temperature is reduced to the room temperature, then the high-temperature expansion coating 4 is solidified, and the magnetic steel 2 is fixed in the magnetic steel groove 3.
Claims (5)
1. The utility model provides a motor rotor's magnet steel fixed knot constructs which characterized in that: the rotor comprises a rotor core and magnetic steel, wherein a plurality of magnetic steel grooves are formed in the rotor core, the magnetic steel is inserted into the magnetic steel grooves, the height of the magnetic steel is slightly smaller than the height of the magnetic steel grooves, and a high-temperature expansion coating is coated on the surface of the magnetic steel.
2. The magnetic steel fixing structure of the motor rotor according to claim 1, characterized in that: the upper surface of the magnetic steel is coated with a high-temperature expansion coating.
3. The magnetic steel fixing structure of the motor rotor according to claim 1, characterized in that: and high-temperature expansion coatings are coated on the upper surface and the lower surface of the magnetic steel.
4. The magnetic steel fixing structure of the motor rotor according to claim 1, characterized in that: the upper surface, the lower surface, the left surface and the right surface of the magnetic steel are coated with high-temperature expansion coatings.
5. The magnetic steel fixing structure of the motor rotor according to claim 1, characterized in that: six surfaces of the magnetic steel are coated with high-temperature expansion coatings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121153137.2U CN214590829U (en) | 2021-05-27 | 2021-05-27 | Magnetic steel fixing structure of motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121153137.2U CN214590829U (en) | 2021-05-27 | 2021-05-27 | Magnetic steel fixing structure of motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214590829U true CN214590829U (en) | 2021-11-02 |
Family
ID=78362993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121153137.2U Active CN214590829U (en) | 2021-05-27 | 2021-05-27 | Magnetic steel fixing structure of motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214590829U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114574013A (en) * | 2022-05-06 | 2022-06-03 | 天津三环乐喜新材料有限公司 | High-adhesion inorganic expansion coating for magnet |
-
2021
- 2021-05-27 CN CN202121153137.2U patent/CN214590829U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114574013A (en) * | 2022-05-06 | 2022-06-03 | 天津三环乐喜新材料有限公司 | High-adhesion inorganic expansion coating for magnet |
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