CN206180724U - High -speed brushless motor rotor - Google Patents
High -speed brushless motor rotor Download PDFInfo
- Publication number
- CN206180724U CN206180724U CN201621297137.9U CN201621297137U CN206180724U CN 206180724 U CN206180724 U CN 206180724U CN 201621297137 U CN201621297137 U CN 201621297137U CN 206180724 U CN206180724 U CN 206180724U
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- magnet steel
- rotor
- magnetic pole
- utility
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Abstract
The utility model aims at providing an it exerts oneself and the great high -speed brushless motor rotor who improves of power density to enable the motor. For realizing the purposes, the utility model discloses a high -speed brushless motor rotor, includes rotor core and a plurality of magnetic pole that sets up in pairs, and every magnetic pole is equipped with two polarity identical at least and follows the magnet steel that rotor outer fringe circumferencial direction distributes, and the magnet steel quantity of every magnetic pole is the same, and every block of magnet steel all is the arc setting, and the size of every block of magnet steel is the same with the structure. When every utmost point has the polylith magnet steel, though the magnet steel is still the parallel magnetizes, can reach the effect that radially magnetizes, the crest and the trough of the air gap wave form of motor all constitute m shape, and counter electromotive force waveform's crest and crest all have the trapezium structure. The utility model discloses a make every magnetic pole become with polarity magnet steel group by the polylith to make motor air gap clearance diminish, and make counter electromotive force waveform type of being trapezoidal wave, make the magnetic leakage less, in order to improve the utility model discloses exerting oneself and power density of motor.
Description
Technical field
The utility model is related to a kind of brushless electric machine, and in particular to the rotor of brushless electric machine.
Background technology
Traditional brushless electric machine, especially 2 pole motors, 4 pole motors, each magnetic pole of its rotor only have one block of magnet steel,
Produced air gap clearance is larger, air-gap field chain is more long, leakage field is more, the power of magnetic field chain is smaller, cause rotor, stator it is dynamic
Energy or electric energy transmission efficiency are relatively low, i.e., motor is exerted oneself smaller with power density.
The content of the invention
The purpose of this utility model is to provide and a kind of motor can be made to exert oneself the high-speed brushless electricity greatly improved with power density
Machine rotor.
To achieve the above object, the utility model is adopted the following technical scheme that：A kind of high-speed brushless rotor, including turn
Sub- iron core and some magnetic poles being arranged in pairs, each magnetic pole is identical at least provided with two pieces of polarity and divides along rotor periphery circumferencial direction
The magnet steel of cloth, the magnet steel quantity of each magnetic pole is identical, every piece of curved setting of magnet steel, and every piece of size and structure phase of magnet steel
Together.
Because every block of magnet steel is all parallel magnetization, when every pole only has one block of magnet steel, the air gap waveform of motor and anti-electricity
Gesture waveform is all in sinusoidal；When there is polylith magnet steel every pole, although be parallel magnetization, but the effect of radial magnetizing can be reached,
The crest and trough of the air gap waveform of motor constitute m shapes, and the crest and crest of counter potential waveform are respectively provided with trapezium structure, wavelength
Longer, logical magnetic is bigger.The utility model is made up of by making each magnetic pole polylith same polarity magnet steel, so that motor gas-gap gap becomes
It is small, and make counter potential waveform be in class trapezoidal wave so that less, the logical magnetic of leakage field is bigger, to improve exerting oneself for the utility model motor
And power density.
Preferably, adjacent magnet steel splices to constitute cirque structure.
Preferably, all magnet steel are uniformly arranged in the annular space with armature spindle axis as midpoint.To this as needed
The magnet steel of utility model is connected to constitute annular, or adjacent magnet steel interval setting.
Preferably, the adjacent face of adjacent magnet steel is in contact, the abutted surface of adjacent magnet steel is with the rotor punching of rotor partly
Footpath line overlap.Above-mentioned setting ensures that the setting of the utility model magnet steel is uniform.
Preferably, the magnet steel quantity of each magnetic pole is two pieces.
The utility model each magnetic pole sets at least two magnet steel, makes the mode of magnetizing close to radial magnetizing, can obtain footpath
Also changed therewith to the effect for magnetizing, and air gap waveform and counter potential waveform；The air gap waveform of the utility model motor
Crest and trough constitute m shapes（Similar two connected trapezoidal）, the crest and crest of counter potential waveform are respectively provided with trapezium structure
（Similar two it is trapezoidal and two it is trapezoidal between V-arrangement waveform, or three connected trapezoidal）, wavelength is longer, leads to magnetic rate higher.This reality
It is made up of polylith same polarity magnet steel by making each magnetic pole with new, so that motor gas-gap gap diminishes, and makes counter potential waveform
In class trapezoidal wave so that leakage field is less, to improve exerting oneself and power density for the utility model motor.
Brief description of the drawings
Fig. 1 is a kind of structural representation of magnet steel of the present utility model；
Fig. 2 is the schematic diagram of the mode that magnetizes of magnet steel of the present utility model；
Fig. 3 is the air gap waveform diagram of the utility model motor；
Fig. 4 is the waveform diagram of the back-emf of the utility model motor.
Specific embodiment
The utility model is further described below according to the drawings and specific embodiments.
As shown in Figure 1, the high-speed brushless rotor of two grades of motors of the present utility model, including rotor core and a pair of magnetic
Pole, S poles and N poles are equipped with two blocks of polarity identical magnet steel 1, and rotor core is laminated by some rotor punchings 2, four magnet steel
1 shape and structure size all same, and four magnet steel 1 are along the distribution of rotor periphery circumferencial direction.Every block of magnet steel 1 is curved to be set
Put, two magnet steel of magnetic pole 1 splice to constitute loop configuration, and the adjacent face of adjacent magnet steel 1 is in contact, and adjacent magnet steel 1
The radius line overlap of abutted surface and rotor punching 2.
As shown in Figure 2, each magnet steel is parallel magnetization, and because every pole magnet steel quantity is two or more, magnetize mode
Close to radial magnetizing, the effect of radial magnetizing can be obtained, and air gap waveform and counter potential waveform also change therewith；Such as Fig. 3
With shown in Fig. 4, the crest and trough of the air gap waveform of the utility model motor constitute m shapes（Similar two connected trapezoidal）,
The crest and crest of counter potential waveform are respectively provided with trapezium structure（Similar two it is trapezoidal and two it is trapezoidal between V-arrangement waveform, or three
Connected is trapezoidal）, wavelength is longer, leads to magnetic rate higher.The utility model is made up of by making each magnetic pole polylith same polarity magnet steel,
So that motor gas-gap gap diminishes, and counter potential waveform is set to be in class trapezoidal wave so that leakage field is less, to improve the utility model electricity
Machine is exerted oneself and power density.
Claims (5)
1. a kind of high-speed brushless rotor, it is characterised in that including rotor core and some magnetic poles being arranged in pairs, each magnetic
Pole is at least provided with two pieces of polarity are identical and magnet steel that be distributed along rotor periphery circumferencial direction, and the magnet steel quantity of each magnetic pole is identical,
Every piece of curved setting of magnet steel, and the size of every block of magnet steel is identical with structure.
2. high-speed brushless rotor according to claim 1, it is characterised in that adjacent magnet steel splicing is constituting annular
Structure.
3. high-speed brushless rotor according to claim 1, it is characterised in that all magnet steel in being with armature spindle axis
The annular space at midpoint is uniformly arranged.
4. high-speed brushless rotor according to claim 2, it is characterised in that the adjacent face of adjacent magnet steel is in contact,
The abutted surface of adjacent magnet steel and the rotor punching radius line overlap of rotor.
5. high-speed brushless rotor according to claim 1, it is characterised in that the magnet steel quantity of each magnetic pole is two pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621297137.9U CN206180724U (en) | 2016-11-30 | 2016-11-30 | High -speed brushless motor rotor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621297137.9U CN206180724U (en) | 2016-11-30 | 2016-11-30 | High -speed brushless motor rotor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206180724U true CN206180724U (en) | 2017-05-17 |
Family
ID=60242095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621297137.9U Active CN206180724U (en) | 2016-11-30 | 2016-11-30 | High -speed brushless motor rotor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206180724U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533006A (en) * | 2016-11-30 | 2017-03-22 | 浙江联宜电机有限公司 | High-speed brushless motor rotor |
-
2016
- 2016-11-30 CN CN201621297137.9U patent/CN206180724U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533006A (en) * | 2016-11-30 | 2017-03-22 | 浙江联宜电机有限公司 | High-speed brushless motor rotor |
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