CN207339461U - The rotor assembly of motor and there is its motor - Google Patents
The rotor assembly of motor and there is its motor Download PDFInfo
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- CN207339461U CN207339461U CN201721287079.6U CN201721287079U CN207339461U CN 207339461 U CN207339461 U CN 207339461U CN 201721287079 U CN201721287079 U CN 201721287079U CN 207339461 U CN207339461 U CN 207339461U
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Abstract
The utility model discloses a kind of motor rotor assembly and there is its motor, the rotor assembly of motor includes shaft and N number of rotor, each rotor is equipped with centre bore, N number of rotor is set in shaft along the axial direction of shaft and is fixedly connected with shaft respectively, at least one and remaining any one rotor in N number of rotor has dislocation deviation angle θ in circumferential direction, and the offset direction that misplaces is identical, wherein, N >=2,4 °≤θ≤6 °.According to the rotor assembly of the motor of the utility model embodiment, pass through the angular range for rationally setting dislocation to deviate, it can so cause motor under high speed load running operating mode, so that the rotor of dislocation offset differs certain phase angle with the power harmonic amplitude of its neighbouring other rotors, so that the amplitude of capable harmonic wave reduces after superposition, and then weaken Z electromagnetic noise.
Description
Technical field
Technical field of motor manufacture is the utility model is related to, a kind of rotor assembly more particularly, to motor and is had
Its motor.
Background technology
In permanent magnet synchronous motor, P, Z represent the rotor number of pole-pairs and motor stator slot number of motor respectively.According to motor electricity
Magnetic is theoretical, and there is order in multipole integer groove permanent magnet synchronous motor (such as 8 pole, 48 groove integer groove permanent magnet synchronous motor) to be
The power harmonic wave of slot number Z, under the action of this power harmonic wave, motor can resonate, and produce larger vibration noise, this electromagnetism
Noise is referred to as Z rank electromagnetic noises.
Motor in correlation technique causes the rotor after superposition to form oblique pole structure by the way that rotor is divided into two sections,
Although but the setting of this structure can reduce empty load of motor operating mode or low speed load under cogging torque to noise of motor
Influence, can not act on stator tooth in view of the radial electromagnetic force harmonic wave in motor under motor high speed load behavior and label,
And under the transmission effect of power, tooth yoke portion's simple harmonic oscillation of stator is caused, so that trigger vibration and the noise of motor, thus,
The problem of electromagnetic noise under empty load of motor operating mode cannot be efficiently solved.
Utility model content
The utility model is intended at least solve one of technical problem existing in the prior art.For this reason, the utility model carries
Go out a kind of rotor assembly of motor, the rotor assembly of the motor can both reduce the amplitude of cogging torque, can also weaken by
In noise caused by Z radial load harmonic wave.
The utility model also proposed a kind of motor with above-mentioned rotor assembly.
According to the rotor assembly of the motor of the utility model first aspect embodiment, including shaft；N number of rotor, Mei Gesuo
State rotor and be equipped with centre bore, N number of rotor be set in respectively along the axial direction of the shaft in the shaft and with institute
State shaft to be fixedly connected, at least one and remaining any one rotor in N number of rotor has dislocation partially in circumferential direction
Angle, θ is moved, and the offset direction that misplaces is identical, wherein, N >=2,4 °≤θ≤6 °.
According to the rotor assembly of the motor of the utility model embodiment, by the way that at least one in N number of rotor is arranged to
It is identical with the dislocation deviation angle of remaining either rotor in the circumferential, and the angular range by rationally setting dislocation to deviate,
It can so cause motor under high speed load running operating mode so that the power of the rotor for the offset that misplaces and its neighbouring other rotors
Harmonic amplitude differs certain phase angle, so that the amplitude of capable harmonic wave reduces after superposition, and then weakens Z electromagnetic noise.
Some embodiments according to the present utility model, n or n+1 rotor in N number of rotor exist both with respect to remaining rotor
Have that dislocation deviation angle θ, N in same direction is 2n+1 and n is integer more than or equal to 1 in circumferential direction.
Some embodiments according to the present utility model, the first rotor and N rotors are respectively adjacent to the both ends of the shaft, institute
The first rotor and the N rotors are stated relative to remaining rotor in the circumferential with dislocation deviation angle θ in same direction.This
Sample can not only simplify process for machining and manufacturing, but also can ensure there is certain weakening effect to Z electromagnetic noise.
Some embodiments according to the present utility model, n in N number of rotor have in the circumferential both with respect to remaining rotor
Dislocation deviation angle θ, N in same direction is 2n and n is the integer more than or equal to 1.
Some embodiments according to the present utility model, N number of rotor are followed successively by first along the axial direction of the shaft
Rotor, the second rotor, third trochanter ... 2n+1 rotors, wherein, the first rotor, third trochanter ... 2n+1 rotors both with respect to
Remaining rotor has dislocation deviation angle θ in same direction in the circumferential.Thus, it is respectively formed dislocation between two neighboring rotor
Offset, so utilizes the amplitude principle of stacking of power harmonic wave, can effectively weaken the overall amplitude of Z radial load harmonic wave, so that
Reduce Z electromagnetic noise of motor.
Some embodiments according to the present utility model, N number of rotor are followed successively by first along the axial direction of the shaft
Rotor, the second rotor, third trochanter ... 2n rotors, wherein, the first rotor is to the n-th rotor both with respect to remaining rotor in circumferential direction
The upper dislocation deviation angle θ having in same direction.
Some embodiments according to the present utility model, N number of rotor are followed successively by first along the axial direction of the shaft
Rotor, the second rotor, third trochanter ... 2n rotors, wherein, the first rotor to the n-th/2 rotor and 3n/2 rotors are to 2n turns
It is the even number more than or equal to 2 that son has dislocation deviation angle θ, n in same direction both with respect to remaining rotor in the circumferential.This
The preceding n/2 rotor of sample and rear n/2 rotor form the dislocation of certain angle whole relative to remaining rotor positioned at centre, from
And reduced after causing the power harmonic amplitude superposition between two sections, and then weaken Z electromagnetic noise.
Some examples according to the present utility model, while ensureing to act on Z electromagnetic noise suppression, reduce manufacture dress
With difficulty, the axial directions of N 4,4 rotors along the shafts be followed successively by the first rotor, the second rotor, third trochanter and
4th rotor, wherein, the first rotor and fourth trochanter have along phase Tongfang in the circumferential both with respect to the second rotor and third trochanter
To dislocation deviation angle θ.
Further example according to the present utility model, the θ is between 4 ° -5 °.
Some embodiments according to the present utility model, the shaft and N number of rotor pass through key connection.
Some embodiments according to the present utility model, each rotor are equipped with magnetic slot, and the magnetic slot turns along described
The outer circumferential side distribution of son, the magnetic slot is interior to be equipped with permanent magnet.
According to the motor of the utility model second aspect embodiment, including the rotor according to the utility model above-described embodiment
Component.
According to the motor of the utility model embodiment, by using the rotor set according to the utility model above-described embodiment
Part, has the characteristics that with small vibration, noise is low.
The additional aspect and advantage of the utility model will be set forth in part in the description, partly by from following description
In become obvious, or recognized by the practice of the utility model.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the utility model will in the description from combination accompanying drawings below to embodiment
Become obvious and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram according to the rotor assembly of the motor of the utility model embodiment；
Fig. 2 is the another schematic diagram according to the rotor assembly of the motor of the utility model embodiment；
Fig. 3 is the schematic diagram according to the rotor punching of the rotor assembly of the utility model embodiment.
Reference numeral：
100：Rotor assembly；
10：Shaft；
21：The first rotor；22：Second rotor；23：Third trochanter；24：Fourth trochanter；
211：Rotor punching；2111：Magnetic slot；
30：Permanent magnet.
Embodiment
The embodiment of the utility model is described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning
Same or similar element is represented to same or similar label eventually or there is same or like element.Below by ginseng
The embodiment for examining attached drawing description is exemplary, and is only used for explaining the utility model, and it is not intended that to the utility model
Limitation.
In the description of the utility model, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width
Degree ", " thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " suitable
The orientation or position relationship of the instruction such as hour hands ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " are based on orientation shown in the drawings
Or position relationship, be for only for ease of description the utility model and simplify and describe, rather than instruction or imply signified device or
Element must have specific orientation, with specific azimuth configuration and operation, therefore it is not intended that limit to the utility model
System.In addition, define " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".
In the description of the utility model, unless otherwise indicated, " multiple " are meant that two or more.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term " are pacified in the description of the utility model
Dress ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or integratedly
Connection；Can mechanically connect or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
Concrete meaning of the language in the utility model.
Below with reference to the accompanying drawings rotor assembly 100 according to the motor of the utility model embodiment is described.
As shown in Figure 1 to Figure 3, according to the rotor assembly 100 of the motor of the utility model first aspect embodiment, including turn
Axis 10 and N number of rotor.
Each rotor is equipped with centre bore, and centre bore can be coordinated with shaft 10, and N number of rotor is set in vertically to be turned
On axis 10, and it is fixedly connected with shaft 10, it is inclined that at least one and remaining rotor in N number of rotor produces dislocation in the circumferential
Move, form that offset direction is identical and equal-sized dislocation deviation angle θ between any one rotor of the rotor and remaining, for example, N
One in a rotor can form the offset of θ angles along clockwise direction, or form the offset of θ angles in the counterclockwise direction.
Wherein, the number N of rotor is at least two, and the dislocation deviation angle θ of rotor can take the arbitrary value between 4 ° to 6 °.In this way,
By reasonably setting the angle of offset rotor, while cogging torque is reduced motor can be ensured in high speed load running
Operating mode under, the rotor for the offset that misplaces can differ certain phase with the amplitude of the radial load harmonic wave of its neighbouring other rotors
Angle, for example, can cause the rotor that dislocation deviates and its neighbouring other rotors by adjusting suitable dislocation deviation angle
The amplitude of radial load harmonic wave can differ 180 °, so that the power harmonic amplitude after superposition integrally reduces, realize and weaken Z footpath
To noise contributions caused by power harmonic wave.
Thus, according to the rotor assembly 100 of the motor of the utility model embodiment, by by least one in N number of rotor
A dislocation deviation angle for being arranged to remaining either rotor in the circumferential is identical, and the angle by rationally setting dislocation to deviate
Scope is spent, can so cause motor under high speed load running operating mode so that the rotor for the offset that misplaces and other adjacent to it
The power harmonic amplitude of rotor differs certain phase angle, so that the amplitude of capable harmonic wave reduces after superposition, and then weakens Z electricity
Magnetic noise.
Some examples according to the present utility model, when the total N of rotor is 2n+1, i.e., N number of rotor sum is odd number, this
When, n in N number of rotor or n+1 rotor forms equidirectional in the circumferential relative to remaining rotor and angle is identical
Offset, for example, as n=1, rotor sum is 3, and at this time, 1 or 2 in 3 rotors has relative to remaining rotor
Identical circumferential offset, so as to differ certain phase angle with the power harmonic amplitude of remaining rotor using offset dislocation rotor, is realized to Z
The weakening of secondary electromagnetic noise.
The both ends that some embodiments according to the present utility model, the first rotor and N rotors are divided into neighbouring shaft 10 are set,
Between the first rotor and N rotors, the first rotor and N rotors are formed remaining rotor in the circumferential relative to remaining rotor
Equidirectional and the equal offset of angle, that is to say, that the first rotor and N rotors have the identical cheap angle, θ of dislocation, this
Sample, can differ certain phase angle between the first rotor, N rotors and the amplitude of the radial load harmonic wave of its neighbouring rotor,
So that the power harmonic amplitude after superposition reduces, the effect for reducing electromagnetic noise is realized, furthermore, it is also possible to a certain extent
Simplify manufacture assembling process.
Other embodiments according to the present utility model, when the total N of rotor is 2n, i.e., N number of rotor sum is even number,
At this moment, the half in N number of rotor (i.e. n) forms equidirectional and angle in the circumferential relative to the other half in N number of rotor
Identical offset, for example, as n=2, rotor sum is 4, and at this time, any two has relative to other two in 4 rotors
There is identical circumferential offset, so as to ensure the weakening effect to Z electromagnetic noise.
Some examples according to the present utility model, the axial direction of N number of rotor along shaft 10 be followed successively by the first rotor, second turn
Son, third trochanter ... 2n+1 rotors, the first rotor, third trochanter, the 5th rotor ... 2n+1 rotors are opposite with remaining turn
Son has equidirectional and equal-sized dislocation deviation angle θ in the circumferential, and in other words, the rotor for the offset that misplaces is not with occurring
In axial direction interval is arranged in shaft 10 dislocation offset rotor successively, for example, when N is 7, the first rotor, third trochanter, the 5th
Rotor and the 7th rotor have direction identical in the circumferential relative to remaining rotor and equal-sized dislocation deviation angle θ.By
This, is respectively formed dislocation offset, so utilizes the amplitude principle of stacking of power harmonic wave, can effectively weaken between two neighboring rotor
The overall amplitude of Z radial load harmonic wave, so as to reduce Z electromagnetic noise of motor.
Some embodiments according to the present utility model, the axial direction of N number of rotor along shaft 10 are followed successively by the first rotor,
Two rotors, third trochanter ... 2n rotors, wherein, the first rotor to the n-th rotor has edge in the circumferential relative to remaining rotor
The dislocation deviation angle θ of equidirectional, that is to say, that preceding n rotor is identical relative to the dislocation deviation angle of rear n rotor,
In this way, using power harmonic amplitude superposition, it can effectively weaken the overall amplitude of Z radial load harmonic wave, reduce electromagnetism and make an uproar
Sound.
Other example according to the present utility model, the axial direction of N number of rotor along shaft 10 be followed successively by the first rotor, second turn
Son, third trochanter ... 2n rotors, wherein, the first rotor to the n-th/2 rotor and 3n/2 rotors to 2n rotors both with respect to
Remaining rotor has dislocation deviation angle θ in same direction, in other words, preceding n/2 rotor in axial direction in the circumferential
There is equidirectional and equal-sized dislocation deviation angle θ, n in the circumferential with rear n/2 rotor both with respect to remaining rotor
For the even number more than 2, in this way, preceding n/2 rotor and rear n/2 rotor are formed whole relative to positioned at remaining middle rotor
The dislocation of certain angle, so that the power harmonic amplitude between two sections reduces after being superimposed, and then weakens Z electromagnetic noise.
As depicted in figs. 1 and 2, optional example according to the present utility model, N can be 4, that is to say, that the first rotor 21,
Second rotor 22, third trochanter 23 and fourth trochanter 24 are set gradually along the circumferential direction of shaft 10, the first rotor 21 and fourth trochanter
24 have equidirectional and equal-sized dislocation deviation angle in the circumferential both with respect to the second rotor 22 and third trochanter 23
θ, in this way, while ensureing to act on Z electromagnetic noise suppression, reduces manufacture assembly difficulty, simplifies assembling process.
As shown in Figures 2 and 3, in some optional examples of the utility model, θ can be any between 4 ° to 5 °
Value, for example, in this example, θ is 4.5 °, and those skilled in the art can carry out appropriate adjustment to ensure pair according to actual design
The inhibitory action of Z electromagnetic noise.
As shown in figure 3, in some embodiments of the utility model, by key connection between N number of rotor and shaft 10, this
Sample had not only facilitated manufacture assembling, but also can ensure connective stability.
As shown in figure 3, in some embodiments of the utility model, magnetic slot 2111, magnet steel are equipped with each rotor
Groove 2111 can open arrangement along the circumferentially-spaced of rotor, and permanent magnet 30 can be installed in magnetic slot 2111, so as to ensure that motor is transported
Stable magnetic field when turning.
According to the motor of the utility model second aspect embodiment, including the rotor according to the utility model above-described embodiment
Component 100.
According to the motor of the utility model embodiment, by using the rotor assembly according to the utility model above-described embodiment
100, have the characteristics that with small vibration, noise is low.
According to the production method of the rotor assembly 100 of the motor of the utility model third aspect embodiment, including
S1, first according to the quantity of skewed pole rotor and common rotor in default rotor assembly 100, make oblique pole respectively and turn
Son and common rotor, for example, as shown in Figure 1, it is necessary to make two skewed pole rotors (the first rotor 21 and fourth trochanters in example
24), two common rotors (the second rotor 22 and third trochanter 23)；
The keyway of rotor punching 211, be stacked be fixed in frock in order to make respectively by S11 along cant angle theta angle clockwise
Make skewed pole rotor, the keyway of rotor punching 211 is not stacked obliquely and is fixed in frock to manufacture common rotor；
After the completion of S12,211 lamination of rotor punching, according to N, S extreme direction, respectively by permanent magnet 30 according to the stacked shape of loading
Into magnetic slot 2111 in；
S13, pour into the gap between rotor punching 211, permanent magnet 30 with casting glue, and be put into oven heat it is default when
Between, for example, can be 1.5 it is small when；
It is cold to postpone to form skewed pole rotor and common rotor after S14, taking-up；
Skewed pole rotor and common rotor, be fitted in shaft 10 by S2 successively according to preset order, forms rotor assembly
100。
It is oblique by sectional making rotor according to the production method of the rotor assembly 100 of the motor of the utility model embodiment
Pole and common rotor, are then installed according to preset order, and manufacturing process is simple, flexible and easy to assembly.
It is common for this area according to the rotor assembly 100 of the motor of the utility model embodiment, motor etc. and operation
All it is known for technical staff, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the utility model.In the present specification, to above-mentioned art
The schematic representation of language may not refer to the same embodiment or example.Moreover, description specific features, structure, material or
Person's feature can combine in an appropriate manner in any one or more embodiments or example.
While there has been shown and described that the embodiment of the utility model, it will be understood by those skilled in the art that：
These embodiments can be carried out with a variety of changes, modification in the case where not departing from the principle and objective of the utility model, replaced
And modification, the scope of the utility model are limited by claim and its equivalent.
Claims (11)
- A kind of 1. rotor assembly of motor, it is characterised in that including：Shaft；N number of rotor, each rotor are equipped with centre bore, and N number of rotor is arranged along the axial direction of the shaft respectively It is fixedly connected in the shaft and with the shaft, at least one and remaining any one rotor in N number of rotor is in week There is dislocation deviation angle θ on to direction, and the offset direction that misplaces is identical, wherein, N >=2,4 °≤θ≤6 °.
- 2. the rotor assembly of motor according to claim 1, it is characterised in that the n or n+1 rotor in N number of rotor are equal Relative to remaining rotor be in the circumferential 2n+1 with dislocation deviation angle θ, N in same direction and n is whole more than or equal to 1 Number.
- 3. the rotor assembly of motor according to claim 1, it is characterised in that the n in N number of rotor is a both with respect to remaining Rotor is in the circumferential 2n with dislocation deviation angle θ, N in same direction and n is the integer more than or equal to 1.
- 4. the rotor assembly of motor according to claim 2, it is characterised in that axis of N number of rotor along the shaft The first rotor, the second rotor, third trochanter ... 2n+1 rotors are followed successively by direction, wherein, the first rotor, third trochanter ... 2n+1 rotors have dislocation deviation angle θ in same direction both with respect to remaining rotor in the circumferential.
- 5. the rotor assembly of motor according to claim 3, it is characterised in that axis of N number of rotor along the shaft The first rotor, the second rotor, third trochanter ... 2n rotors are followed successively by direction, wherein, the first rotor is opposite to the n-th rotor There is dislocation deviation angle θ in same direction in the circumferential in remaining rotor.
- 6. the rotor assembly of motor according to claim 3, it is characterised in that axis of N number of rotor along the shaft The first rotor, the second rotor, third trochanter ... 2n rotors are followed successively by direction, wherein, the first rotor to the n-th/2 rotor and It is big that 3n/2 rotors have dislocation deviation angle θ, n in same direction to 2n rotors in the circumferential both with respect to remaining rotor In the even number equal to 2.
- 7. the rotor assembly of motor according to claim 6, it is characterised in that 4,4 rotors of N are along the shaft Axial direction be followed successively by the first rotor, the second rotor, third trochanter and fourth trochanter, wherein, the first rotor and fourth trochanter There is dislocation deviation angle θ in same direction in the circumferential both with respect to the second rotor and third trochanter.
- 8. the rotor assembly of motor according to claim 7, it is characterised in that the dislocation deviation angle θ 4 ° -5 ° it Between.
- 9. the rotor assembly of motor according to claim 8, it is characterised in that the shaft and N number of rotor pass through Key connection.
- 10. the rotor assembly of motor according to claim 1, it is characterised in that each rotor is equipped with magnetic slot, institute State magnetic slot to be distributed along the outer circumferential side of the rotor, permanent magnet is equipped with the magnetic slot.
- 11. a kind of motor, it is characterised in that include the rotor assembly of the motor according to any one of claim 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287079.6U CN207339461U (en) | 2017-09-29 | 2017-09-29 | The rotor assembly of motor and there is its motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721287079.6U CN207339461U (en) | 2017-09-29 | 2017-09-29 | The rotor assembly of motor and there is its motor |
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| Publication Number | Publication Date |
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| CN207339461U true CN207339461U (en) | 2018-05-08 |
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| CN201721287079.6U Active CN207339461U (en) | 2017-09-29 | 2017-09-29 | The rotor assembly of motor and there is its motor |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756071A (en) * | 2017-11-07 | 2019-05-14 | 通用汽车环球科技运作有限责任公司 | The field weakening system and method for electric motor are carried out using variable magnetic field deflection |
| CN110798039A (en) * | 2019-10-28 | 2020-02-14 | 上海大郡动力控制技术有限公司 | double-V-shaped motor rotor applied to permanent magnet synchronous motor of electric automobile |
| WO2021008204A1 (en) * | 2019-07-12 | 2021-01-21 | 精进电动科技股份有限公司 | Motor skewed pole rotor |
| WO2022018363A2 (en) | 2020-07-23 | 2022-01-27 | Nidec Psa Emotors | Rotary electric machine |
-
2017
- 2017-09-29 CN CN201721287079.6U patent/CN207339461U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109756071A (en) * | 2017-11-07 | 2019-05-14 | 通用汽车环球科技运作有限责任公司 | The field weakening system and method for electric motor are carried out using variable magnetic field deflection |
| CN109756071B (en) * | 2017-11-07 | 2021-08-31 | 通用汽车环球科技运作有限责任公司 | System and method for electric motor field weakening using variable field skewing |
| WO2021008204A1 (en) * | 2019-07-12 | 2021-01-21 | 精进电动科技股份有限公司 | Motor skewed pole rotor |
| CN110798039A (en) * | 2019-10-28 | 2020-02-14 | 上海大郡动力控制技术有限公司 | double-V-shaped motor rotor applied to permanent magnet synchronous motor of electric automobile |
| WO2022018363A2 (en) | 2020-07-23 | 2022-01-27 | Nidec Psa Emotors | Rotary electric machine |
| FR3112906A1 (en) | 2020-07-23 | 2022-01-28 | Nidec Psa Emotors | Rotating electric machine |
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