CN216625414U - Non-excitation loss iron core rotor - Google Patents
Non-excitation loss iron core rotor Download PDFInfo
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- CN216625414U CN216625414U CN202123290631.6U CN202123290631U CN216625414U CN 216625414 U CN216625414 U CN 216625414U CN 202123290631 U CN202123290631 U CN 202123290631U CN 216625414 U CN216625414 U CN 216625414U
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- rotating shaft
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Abstract
The utility model discloses a non-iron core rotor without excitation loss, which comprises a rotating shaft and a magnetic ring, wherein the magnetic ring is coated on the periphery of the rotating shaft, the rotating shaft and the magnetic ring are in an integrated structure, and the magnetic ring is in an integrated structure formed by sticking a plurality of magnetic sections. The utility model has the characteristics of integration of the rotating shaft and the magnetic ring, no rotor iron core structure, no excitation loss, simple structure and assembly, labor and material cost saving and the like.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a coreless rotor without excitation loss.
Background
The rotor is the rotating part of the motor or some rotary machines (such as turbo machine), and the traditional motor rotor is generally composed of rotor iron core, magnetic steel, magnetic isolation sheet, rotating shaft and other parts. For example, a rotor of a brushless dc motor is formed by embedding permanent magnets having a certain number of pole pairs on the surface of an iron core or into the iron core, permanent magnetic steel in the brushless dc motor is mounted on the rotor, and the rotor structure of the brushless dc motor mostly adopts surface-mounted magnetic poles, also called tile-shaped magnetic poles.
However, the assembly method is easily influenced by the process, so that the magnetic field is easily distributed unevenly, excitation damage exists, the assembly is complicated, the labor cost is high, meanwhile, the centrifugal force action is difficult to overcome by the method of adhering magnetic poles on the surface of the motor with high requirement on the rotating speed, the rotor process also comprises complicated procedures of coating, cleaning, rust prevention and the like, and the material cost is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the above-mentioned disadvantages of the prior art, it is an object of the present invention to provide a coreless rotor free from excitation loss.
The technical scheme adopted by the utility model for solving the technical problem is as follows: the rotating shaft and the magnetic ring are both in a circular cylindrical shape, the magnetic ring wraps the periphery of the rotating shaft, the rotating shaft and the magnetic ring are in an integrated structure, the magnetic ring is formed by sticking a plurality of magnetic sections, and the magnetic ring is formed by sticking the plurality of magnetic sections integrally.
The rotating shaft and the magnetic ring are integrated through injection molding or are in interference fit through a magnetic viscose integrated structure, and the axis of the rotating shaft and the axis of the magnetic ring are the same axis.
As a further improvement of the utility model: the rotating shaft is made of stainless steel.
As a further improvement of the utility model: the magnetic ring is a neodymium iron boron magnetic ring.
As a further improvement of the utility model: each magnetic segment is equally divided into a plurality of N poles and S poles along the circumferential direction, the N poles and the S poles are arranged at intervals, and the interface between each N pole and the adjacent S pole is an inclined plane.
As a further improvement of the utility model: each magnetic section is equally divided into two equal parts along the circumferential direction.
As a further improvement of the utility model: the upper end of the interface between the N pole and the adjacent S pole of each magnetic section is provided with a boss, the lower end of the interface is provided with a groove, and the boss of each magnetic section is connected with the groove of the adjacent magnetic section in an embedded manner.
As a further improvement of the utility model: the included angle between the interface and the axis of the magnetic ring is 9.5 degrees.
As a further improvement of the utility model: the magnetic ring is magnetized in a slant pole magnetizing mode.
As a further improvement of the utility model: one end of the rotating shaft is sleeved with a magnetism isolating ring, and the outer side of the rotating shaft, which is opposite to the magnetism isolating ring, is sleeved with a magnetic conduction ring.
As a further improvement of the utility model: the magnetism isolating ring and the magnetic conduction ring are in interference fit with the rotating shaft.
Compared with the prior art, the utility model has the beneficial effects that:
according to the permanent magnet rotor, the rotating shaft and the externally-coated magnetic ring are designed into an integrated structure, so that the permanent magnet rotor is formed, an iron core is not needed, the rotor has no excitation loss, the structure and the assembly process are simplified, and the material cost and the labor cost are saved; meanwhile, the magnetic ring is designed into a sectional obliquely-charging integrated magnetic ring, and each magnetic section is bonded and combined through embedded clamping, so that the problem that the centrifugal force action is difficult to overcome in the surface-bonded magnetic pole mode in the prior art at a higher rotating speed is solved, the magnetic ring is magnetized through oblique poles, the induction capability of magnetic flux is enhanced, the magnetic field distribution station is enabled, and the motor can rotate smoothly and stably in the starting process.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
Fig. 3 is a schematic structural view of a magnetic ring.
Fig. 4 is a schematic structural diagram of the first embodiment.
FIG. 5 is a schematic cross-sectional view taken along line A-A of the first embodiment.
Detailed Description
The utility model will now be further described with reference to the accompanying description and examples:
as shown in fig. 1 to 3, a coreless rotor without excitation loss includes a rotating shaft 1 and a magnetic ring, where the rotating shaft 1 and the magnetic ring 2 are both cylindrical, the magnetic ring 2 covers the periphery of the rotating shaft 1, the rotating shaft 1 and the magnetic ring 2 are integrated into a whole, the magnetic ring 2 is formed by adhering a plurality of magnetic segments 21, and the magnetic segments 21 are adhered and integrated into the magnetic ring 2.
The magnetic ring is characterized in that the rotating shaft 1 and the magnetic ring 2 are integrated through injection molding or are in interference fit through a magnetic viscose integrated structure, and the axis of the rotating shaft 1 and the axis of the magnetic ring 2 are the same.
The rotor of the utility model does not need an iron core, and is simultaneously designed into an integrated structure to form a permanent magnet rotor, so that the rotor has a simple structure, a transfer process is simple, the material cost and the assembly labor cost are saved, meanwhile, the magnet ring 2 adopts an oblique pole magnetizing mode to magnetize, so that the magnetic field strength is uniformly distributed, the magnetic flux induction capability is enhanced, the electromagnetic noise is greatly reduced, and the integrated structure of the rotating shaft 1 and the magnet ring 2 has no excitation loss.
Specifically, the rotating shaft 1 is made of stainless steel. The rotating shaft 1 is made of stainless steel materials, so that the assembling process of the rotor can be simplified, the rust-proof process can be omitted, and the using effect of the rotor is not influenced.
Specifically, the magnetic ring 2 is a neodymium iron boron magnetic ring.
Specifically, the inner diameter of the magnetic ring 2 is 10-25mm +/-0.1 mm, the outer diameter of the magnetic ring 2 is 15-35mm +/-0.1 mm, and the height of the magnetic ring 2 is 60-100mm +/-0.5 mm.
More specifically, the inner diameter of the magnetic ring 2 is 18mm +/-0.1 mm, the outer diameter of the magnetic ring 2 is 26mm +/-0.1 mm, and the height of the magnetic ring 2 is 80mm +/-0.5 mm.
Specifically, each magnetic segment 21 is equally divided into a plurality of N poles and S poles along the circumferential direction, the N poles and the S poles are arranged at intervals, and an interface 24 between each N pole and an adjacent S pole is an inclined plane.
The magnetic ring 2 equally divides the magnetic poles and the different magnetic poles are arranged at intervals, so that the magnetic field is uniformly distributed, the magnetic flux induction capability is further enhanced, the motor is started to stably and smoothly rotate, and the rotor has no excitation loss.
More specifically, each of the magnetic segments 21 is equally divided into two equal parts in the circumferential direction.
Specifically, a boss 22 is arranged at the upper end of an interface 24 between the N pole and the adjacent S pole of each magnetic segment 21, a groove 23 is arranged at the lower end of the interface, and the boss 22 of each magnetic segment 21 is connected with the groove 23 of the adjacent magnetic segment 21 in an embedded manner.
The adjacent magnetic sections 21 are connected with the groove 23 through the lug bosses 22 in an embedded mode, and the adjacent magnetic sections 21 are bonded through magnetic viscose glue to form a layer integrated structure.
In particular, the angle between the dividing surface 24 and the axis of the magnet ring 2 is 9.5 °.
Specifically, one end of the rotating shaft 1 is sleeved with a magnetism isolating ring 11, and the outer side of the rotating shaft 1 opposite to the magnetism isolating ring 11 is sleeved with a magnetic conduction ring 12.
Specifically, the magnetism isolating ring 11 and the magnetism conducting ring 12 are in interference fit with the rotating shaft 1. The magnetism isolating ring 11 and the magnetic conductive ring 12 rotate coaxially with the rotating shaft 1.
More specifically, a notch is arranged at a position of the magnetism isolating ring 11 corresponding to the boss 22 of the adjacent magnetic segment 21, the notch is connected with the boss 22 of the adjacent magnetic segment 21 in an embedded manner, and the joint of the notch and the boss 22 is adhered with glue.
The first embodiment is as follows:
as shown in fig. 4-5, the first embodiment discloses a magnetizing type motor segmented magnetic ring, which includes a plurality of magnetic ring split bodies 1, where the magnetic ring split body 1 has a first magnetic pole region 2, a second magnetic pole region 3, a third magnetic pole region 8, and a fourth magnetic pole region 9 that are sequentially connected, an intersection of the first magnetic pole region 2 and the fourth magnetic pole region 9 is an inclined plane, an intersection of the second magnetic pole region 3 and the third magnetic pole region 8 is an inclined plane 4, both forming a slope type transition region 5, the slope type transition region 5 has a protruding clamping seat 6 at the top of the magnetic ring split body 1, the slope type transition region 5 has a clamping seat groove 7 corresponding to the protruding clamping seat 6 at the bottom of the magnetic ring split body 1, and the magnetic ring split body 1 is connected up and down through the protruding clamping seat 6 and the clamping seat groove 7.
The first magnetic pole area 2, the second magnetic pole area 3, the third magnetic pole area 8, the fourth magnetic pole area 9 and the slope type transition area 5 of the vertically connected magnetic ring split body 1 are respectively and correspondingly fixed through the protruding clamping seat 6 and the clamping seat groove 7, so that the magnetic field distribution of the magnetic ring is ensured to be uniform, disorder is avoided, the magnetic flux induction of the magnetic ring is greatly enhanced, and the stability and smoothness of the motor in the starting process are ensured.
Meanwhile, an oblique magnetizing technology is adopted, so that electromagnetic noise is greatly reduced, the magnetic field strength is uniformly distributed, the magnetic flux induction capability is enhanced, and the motor is stable and smooth in the starting process.
Specifically, the sloped transition region 5 has a central transition line 50, a top end of the central transition line 50 is disposed at one side of the protrusion holder 6, and a bottom end of the central transition line 50 is disposed at a center line of the holder groove 7.
In particular, the angle of the bevel 4 is between 0 ° and 30 °.
Specifically, the first magnetic pole region 2 is an N pole, the second magnetic pole region 3 is an S pole, the third magnetic pole region 8 is an N pole, and the fourth magnetic pole region 9 is an S pole.
Specifically, the ramped transition region 5 includes a first ramped transition region 51 and a second ramped transition region 52.
Specifically, the projection cassette 6 includes a first projection cassette 61 and a second projection cassette 62.
Specifically, the cartridge slot 7 includes a first cartridge slot 71 and a second cartridge slot 72.
The main functions of the utility model are as follows: the rotor provided by the utility model is a coreless rotor, the permanent magnet rotor is formed by integrating the rotating shaft and the magnetic ring, no excitation loss is realized, the structure and the assembly are simple, and the material cost and the labor cost are saved.
In summary, after reading the present disclosure, those skilled in the art can make various other corresponding changes without creative mental labor according to the technical solutions and concepts of the present disclosure, and all of them are within the protection scope of the present disclosure.
Claims (7)
1. A coreless rotor without excitation loss is characterized by comprising a rotating shaft and a magnetic ring, wherein the magnetic ring is coated on the periphery of the rotating shaft, the rotating shaft and the magnetic ring are of an integrated structure, and the magnetic ring is formed by sticking a plurality of magnetic sections to form an integrated structure; each magnetic segment is equally divided into a plurality of N poles and S poles along the circumferential direction, the N poles and the S poles are arranged at intervals, and the interface between each N pole and the adjacent S pole is an inclined plane.
2. The ironless rotor of claim 1, wherein the shaft is made of stainless steel.
3. The ironless rotor without excitation loss of claim 2, wherein a boss is arranged at the upper end of the interface between the N pole and the adjacent S pole of each magnetic segment, and a groove is arranged at the lower end of the interface, and the boss of each magnetic segment is connected with the groove of the adjacent magnetic segment in an embedded manner.
4. A non-excitation loss non-iron core rotor as claimed in claim 3, wherein the angle between said dividing plane and the axis of said magnetic ring is 9.5 °.
5. The ironless rotor of any one of claims 1 to 4, wherein the magnetic ring is magnetized by oblique pole magnetization.
6. The coreless rotor of claim 5, wherein a magnetic isolation ring is fitted over an end of the rotation shaft, and a magnetic conductive ring is fitted over an outer side of the rotation shaft opposite to the magnetic isolation ring.
7. The ironless rotor of claim 6, wherein the magnetism isolating ring and the magnetism conducting ring are in interference fit with the rotating shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290631.6U CN216625414U (en) | 2021-12-24 | 2021-12-24 | Non-excitation loss iron core rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123290631.6U CN216625414U (en) | 2021-12-24 | 2021-12-24 | Non-excitation loss iron core rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216625414U true CN216625414U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123290631.6U Active CN216625414U (en) | 2021-12-24 | 2021-12-24 | Non-excitation loss iron core rotor |
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| CN (1) | CN216625414U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115580045A (en) * | 2022-11-11 | 2023-01-06 | 杭州恒业电机制造有限公司 | Oblique pole permanent magnet structure, permanent magnet stator, permanent magnet rotor and manufacturing method thereof |
-
2021
- 2021-12-24 CN CN202123290631.6U patent/CN216625414U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115580045A (en) * | 2022-11-11 | 2023-01-06 | 杭州恒业电机制造有限公司 | Oblique pole permanent magnet structure, permanent magnet stator, permanent magnet rotor and manufacturing method thereof |
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