CN221009873U - Surface-mounted permanent magnet motor rotor - Google Patents
Surface-mounted permanent magnet motor rotor Download PDFInfo
- Publication number
- CN221009873U CN221009873U CN202322802262.7U CN202322802262U CN221009873U CN 221009873 U CN221009873 U CN 221009873U CN 202322802262 U CN202322802262 U CN 202322802262U CN 221009873 U CN221009873 U CN 221009873U
- Authority
- CN
- China
- Prior art keywords
- permanent magnet
- rotor shaft
- rotor
- nickel alloy
- permanent magnets
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 229910000990 Ni alloy Inorganic materials 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 abstract description 5
- 229920000049 Carbon (fiber) Polymers 0.000 description 3
- 239000004917 carbon fiber Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model discloses a surface-mounted permanent magnet motor rotor which comprises a rotor shaft and permanent magnets, wherein the shaft section of the joint of the rotor shaft and the permanent magnets is in a regular polygon shape, the permanent magnets are adhered to the rotor shaft, a nickel alloy sheath is arranged outside the permanent magnets, the nickel alloy sheath wraps all the permanent magnets, and a shaft sleeve or a check ring is arranged at the outer end of the rotor shaft of the permanent magnets. The utility model adopts the surface-mounted permanent magnet structure, the utilization rate of the permanent magnet material is higher, the motor economy is good, and the nickel alloy sheath is adopted, so that the permanent magnet can not fall off or be damaged under the working condition of large volume and high rotating speed.
Description
Technical Field
The utility model relates to the field of motor rotors, in particular to a surface-mounted permanent magnet motor rotor structure.
Background
The surface-mounted permanent magnet motor has the characteristics of simple structure, light weight, small volume, stable operation, high utilization rate of high-efficiency energy-saving permanent magnet materials and good economical efficiency of the motor, and can be applied to a plurality of occasions. However, the rotor of the surface-mounted permanent magnet motor is subjected to the action of a large centrifugal force under the working condition of large volume and high rotating speed, and the phenomenon that the surface-mounted permanent magnet is easy to fall off or damage occurs easily, so that the nickel alloy sheath is added on the surface of the permanent magnet when the surface-mounted technology is required to be lifted, the carbon fiber nickel alloy sheath is mostly adopted at present, but the compacting force provided by the carbon fiber nickel alloy sheath is limited, and the rotor is more suitable for the rotor with small centrifugal force; for large-volume and high-rotation-speed rotor carbon fiber nickel alloy jackets, the permanent magnets cannot be prevented from falling off or being damaged.
Disclosure of Invention
The utility model aims to provide a surface-mounted permanent magnet motor rotor which has the advantages of higher utilization rate of permanent magnet materials, good economy of the motor and no falling or damage of permanent magnets under the working conditions of large volume and high rotating speed.
In order to achieve the aim of the utility model, the utility model adopts the following technical scheme: the utility model provides a surface-mounted permanent magnet motor rotor, includes rotor shaft and permanent magnet, the axial cross-section of rotor shaft and permanent magnet junction is regular polygon, the permanent magnet is pasted on the rotor shaft, there is the nickel alloy sheath outside the permanent magnet, the nickel alloy sheath wraps up in all permanent magnets, the rotor shaft outward end of permanent magnet is provided with axle sleeve or retaining ring.
The regular polygon is a regular eighteen-square or a regular twenty-square.
The inner side of the permanent magnet is a plane, the outer side of the permanent magnet is an arc surface, and the side surface of the permanent magnet is a plane and is radial along the arc surface.
The surface-mounted permanent magnet motor rotor has the advantages that:
The utility model adopts the surface-mounted permanent magnet structure, the utilization rate of the permanent magnet material is higher, the motor economy is good, and the nickel alloy sheath is adopted, so that the permanent magnet can not fall off or be damaged under the working condition of large volume and high rotating speed.
Drawings
FIG. 1 is a schematic view of the structure of the present utility model with a sleeve;
figure 2 is a schematic view of the structure of the present utility model with a retainer ring,
In the figure, 1 is a rotor shaft, 2 is a permanent magnet, 3 is a nickel alloy sheath, 4 is a shaft sleeve, and 5 is a retainer ring.
Description of the embodiments
The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model.
As shown in figure 1, the utility model relates to a surface-mounted permanent magnet motor rotor, which is suitable for the situation that the difference between the inner diameter of a bearing and the outer diameter of the rotor is smaller, and comprises a rotor shaft, a permanent magnet, a nickel alloy sheath and a shaft sleeve, wherein the shaft section at the joint of the rotor shaft 1 and the permanent magnet 2 is of a regular polygon structure, such as a regular eighteen polygon and a regular twenty-square polygon, the inner side of the permanent magnet 2 is a plane, the outer side of the permanent magnet is an arc surface, the side of the permanent magnet is a plane and is radial along the arc surface, the permanent magnet 2 is adhered with the rotor shaft 1 through glue, after the permanent magnet is well adhered, the shaft sleeve 4 is thermally sleeved on the rotor shaft 1 to prevent the permanent magnet 2 from axial displacement, the shaft sleeve 4 is of a circular ring shape, one end of the shaft sleeve is larger, the outer diameter of the shaft sleeve is the same as the permanent magnet, the other end of the shaft sleeve is smaller, the end surface of the shaft sleeve contacts with the inner ring of the bearing, and finally the permanent magnet 2 and the shaft sleeve 4 are finely ground to the same proper size, and is thermally sleeved with the nickel alloy sheath 3.
As shown in fig. 2, the utility model is a surface-mounted permanent magnet motor rotor structure, which is suitable for the situation that the difference between the inner diameter of a bearing and the outer diameter of a rotor is large, in the structure, the shaft section at the joint of a rotor shaft 1 and a permanent magnet 2 is of a regular polygon structure such as a regular eighteen polygon and a regular twenty-square, the inner side of the permanent magnet 2 is a plane, the outer side of the permanent magnet is an arc surface, the side of the permanent magnet is a plane and is radial along the arc surface, the permanent magnet 2 is adhered to the rotor shaft 1 through glue, after the permanent magnet is adhered, a retainer ring 5 is thermally sleeved on the rotor shaft 1 to prevent the permanent magnet 2 from generating axial displacement, the retainer ring 5 is of a circular ring shape, the inner diameter is in interference fit with the rotor shaft, the outer diameter is the same as the outer diameter of the permanent magnet, a balance hole is formed in the end surface of the retainer ring 5, and after the retainer ring 5 is thermally sleeved, the permanent magnet 2 and the retainer ring 5 are finely ground together to the same proper size, and then thermally sleeved with a nickel alloy sheath 3.
The utility model adopts the surface-mounted permanent magnet structure, the utilization rate of the permanent magnet material is higher, the motor economy is good, and the nickel alloy sheath is adopted, so that the permanent magnet can not fall off or be damaged under the working condition of large volume and high rotating speed.
The foregoing has shown and described the basic principles and main features of the present utility model and the advantages of the present utility model. It will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present utility model, and various changes and modifications may be made therein without departing from the spirit and scope of the utility model, which is defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. The utility model provides a surface-mounted permanent magnet motor rotor, includes rotor shaft and permanent magnet, its characterized in that, the axle cross-section of rotor shaft and permanent magnet junction is regular polygon, the permanent magnet is pasted on the rotor shaft, there is the nickel alloy sheath outside the permanent magnet, the nickel alloy sheath wraps up in all permanent magnets, the rotor shaft outward end of permanent magnet is provided with axle sleeve or retaining ring.
2. The surface mount permanent magnet motor rotor of claim 1 wherein the regular polygon is a regular eighteen-sided or regular twenty-sided shape.
3. The surface mount permanent magnet motor rotor of claim 1 wherein the permanent magnets are planar on the inside, arcuate on the outside, planar on the side and radial along the arcuate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322802262.7U CN221009873U (en) | 2023-10-19 | 2023-10-19 | Surface-mounted permanent magnet motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322802262.7U CN221009873U (en) | 2023-10-19 | 2023-10-19 | Surface-mounted permanent magnet motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221009873U true CN221009873U (en) | 2024-05-24 |
Family
ID=91121362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322802262.7U Active CN221009873U (en) | 2023-10-19 | 2023-10-19 | Surface-mounted permanent magnet motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221009873U (en) |
-
2023
- 2023-10-19 CN CN202322802262.7U patent/CN221009873U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |