CN106712343B - Magneto and its oblique pole of rotor segment - Google Patents
Magneto and its oblique pole of rotor segment Download PDFInfo
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- CN106712343B CN106712343B CN201510508360.7A CN201510508360A CN106712343B CN 106712343 B CN106712343 B CN 106712343B CN 201510508360 A CN201510508360 A CN 201510508360A CN 106712343 B CN106712343 B CN 106712343B
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- rotor segment
- extremity piece
- pole
- permanent magnets
- permanent magnet
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Abstract
The invention discloses a kind of magneto and its oblique poles of rotor segment, the oblique pole of rotor segment includes first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece being sequentially coaxially arranged along the axial direction of the oblique pole of the rotor segment, multiple permanent magnets are solid cylindrical and are provided between two adjacent permanent magnets every magnetic baffle, and the magnetic pole angle between the circumferentially opposed fixation of the multiple permanent magnets and the pole center line of two adjacent permanent magnets is θ；It further include being set in the sheath being fixedly connected on the outside of the first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece and with first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece.The problem of structure design of the oblique pole of the rotor segment can efficiently solve the oblique pole of rotor segment structure is complicated and axial leakage field.
Description
Technical field
The present invention relates to technical field of motor manufacture, oblique more specifically to a kind of magneto and its rotor segment
Pole.
Background technique
Magneto controls advantage with high accuracy with it and is more and more widely used in industrial circle, can be significantly
Improve the power density and efficiency of motor.However due to the influence of slot effect and the non-sine in magnetic field, magneto is often
With biggish tooth-harmonic emf, cogging torque, the control precision of motor is leveraged.In order to improve the control essence of motor
Degree, many magnetoes use skewed stator slot and skewed-rotor, and wherein skewed-rotor is divided into continuous oblique pole and step skewed pole, rotor
Step skewed pole suitable mass production at low cost.
The structure of step skewed pole in the prior art is all more complicated, and many step skewed poles all have axial leakage field
Situation affects the stability of motor.
In conclusion the problem of how efficiently solving the oblique pole of rotor segment structure is complicated and axial leakage field, is current sheet
Field technical staff's urgent problem.
Summary of the invention
In view of this, the first purpose of this invention is to provide a kind of oblique pole of rotor segment, the oblique pole of the rotor segment
The problem of structure design can efficiently solve the oblique pole of rotor segment structure is complicated and axial leakage field, second object of the present invention
It is to provide a kind of magneto including the oblique pole of above-mentioned rotor segment.
In order to reach above-mentioned first purpose, the invention provides the following technical scheme:
A kind of oblique pole of rotor segment, the first rotating shaft end being sequentially coaxially arranged including the axial direction along the oblique pole of the rotor segment
Part, multiple permanent magnets and the second shaft extremity piece, multiple permanent magnets be solid cylindrical and described in adjacent two forever
The magnetic pole every magnetic baffle, multiple circumferentially opposed fixations of permanent magnet and two adjacent permanent magnets is provided between magnet
Magnetic pole angle between center line is θ；
Further include be set on the outside of the first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece and with first turn
The sheath that shaft end part, multiple permanent magnets and the second shaft extremity piece are fixedly connected with.
Preferably, above-mentioned rotor segment tiltedly extremely in, magnetic pole angle theta=2 π/LCM (Z, 2p) * (the N-1)/N, wherein Z be
Number of stator slots, p are number of pole-pairs, and N is the number of permanent magnet, and LCM (Z, 2p) indicates the least common multiple of Z and 2p.
Preferably, above-mentioned rotor segment tiltedly extremely in, the permanent magnet is arranged with described every on the counterface of magnetic baffle
Have a strip groove being arranged radially along it, and the two sides every magnetic baffle be provided with it is convex with strip groove cooperation
Muscle.
Preferably, above-mentioned rotor segment tiltedly extremely in, the convex ribs every magnetic baffle two sides be staggered the angle θ setting, and it is described forever
Strip groove on magnet is vertically arranged with its magnetizing direction.
Preferably, above-mentioned rotor segment tiltedly extremely in, the quantity of the permanent magnet be two and respectively the first permanent magnet and
Second permanent magnet.
Preferably, above-mentioned rotor segment tiltedly extremely in, the sheath and first rotating shaft extremity piece, multiple permanent magnets and second turn
Shaft end part is interference fit.
Preferably, above-mentioned rotor segment tiltedly extremely in, the sheath and it is described between magnetic baffle for interference fit.
Preferably, above-mentioned rotor segment tiltedly extremely in, the sheath use nickel-base alloy, titanium alloy or carbon fibre material system
It is formed.
Preferably, above-mentioned rotor segment tiltedly extremely in, the permanent magnet is formed using NdFeB material.
A kind of magneto, including the oblique pole of rotor segment as described in any one of above-mentioned.
The oblique pole of rotor segment provided by the invention include first rotating shaft extremity piece, multiple permanent magnets, the second shaft extremity piece, every magnetic
Baffle and sheath.Wherein, first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece along the oblique pole of the rotor segment axis
To setting gradually, and first rotating shaft extremity piece, multiple permanent magnets and the coaxial arrangement of the second shaft extremity piece, the i.e. oblique pole of the rotor segment
Both ends are respectively first rotating shaft extremity piece and the second shaft extremity piece, one end and permanent magnet of first rotating shaft extremity piece and the second shaft extremity piece
Contact, the other end can be connect with other components, and the connection of the rotor segment oblique pole and other components is realized with this.
Multiple permanent magnets are solid cylindrical, and are provided between two adjacent permanent magnets every magnetic baffle, more
The circumferentially opposed fixation of a permanent magnet can not relatively rotate between that is, multiple permanent magnets.In addition, two adjacent permanent magnets
Magnetic pole angle between pole center line is θ, and permanent magnet is parallel magnetization, and magnetizing direction i.e. should perpendicular to the axial direction of permanent magnet
The axial direction of the oblique pole of rotor segment.Shield is set on the outside of first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece, and
Sheath is fixedly connected with first rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece, realizes the rotor segment with this
Tiltedly multiple components of pole is relatively fixed.
In the structure of the oblique pole of rotor segment provided by the invention, multiple permanent magnets and two shaft extremity pieces by with
Sheath be fixedly connected realize the oblique pole of rotor segment multiple components it is relatively fixed, when so being assembled only by sheath with
First rotating shaft extremity piece, multiple permanent magnets and the second shaft extremity piece are fixedly connected with, and simple and convenient, structure is simple.
In addition, being provided between two adjacent permanent magnets every magnetic baffle, can separate between adjacent permanent magnet every magnetic baffle
The magnetic line of force can so separate the magnetic field conduction between permanent magnet, reach axial magnetism isolating effect well, avoid axial leakage field
The case where.
In order to reach above-mentioned second purpose, the present invention also provides a kind of magneto, which includes above-mentioned
Any oblique pole of rotor segment.Since the above-mentioned oblique pole of rotor segment has above-mentioned technique effect, there is the oblique pole of the rotor segment
Magneto should also have corresponding technical effect.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is the explosive view of the oblique pole of rotor segment provided in an embodiment of the present invention；
Fig. 2 is the cross-sectional view of the oblique pole of rotor segment provided in an embodiment of the present invention；
Fig. 3 is permanent magnet provided in an embodiment of the present invention and the explosive view every magnetic baffle；
Fig. 4 is the side view of permanent magnet provided in an embodiment of the present invention.
In figures 1-4:
1- first rotating shaft extremity piece, the first permanent magnet of 2-, 3- are every magnetic baffle, the second permanent magnet of 4-, the second shaft of 5- extremity piece, 6-
Sheath, a- groove, b- convex ribs.
Specific embodiment
The first purpose of this invention is to provide a kind of oblique pole of rotor segment, and the structure design of the oblique pole of the rotor segment can
The problem of structure is complicated and axial leakage field to efficiently solve the oblique pole of rotor segment, a second object of the present invention is to provide one kind
Magneto including the oblique pole of above-mentioned rotor segment.
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-Fig. 4 is please referred to, the oblique pole of rotor segment provided in an embodiment of the present invention includes first rotating shaft extremity piece 1, Duo Geyong
Magnet, the second shaft extremity piece 5, every magnetic baffle 3 and sheath 6.Wherein, first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft
Extremity piece 5 is set gradually along the axial direction of the oblique pole of the rotor segment, and first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft
Extremity piece 5 is coaxially disposed, i.e., the oblique pole both ends of the rotor segment are respectively first rotating shaft extremity piece 1 and the second shaft extremity piece 5, first rotating shaft
One end of extremity piece 1 and the second shaft extremity piece 5 is contacted with permanent magnet, and the other end can be connect with other components, realizes this turn with this
The connection of sub- step skewed pole and other components should be plane between first rotating shaft extremity piece 1 and the second shaft extremity piece 5 and permanent magnet
Contact, and first rotating shaft extremity piece 1 and the second shaft extremity piece 5 are all made of non-magnet material and make to be formed.
Multiple permanent magnets are solid cylindrical, and are provided between two adjacent permanent magnets every magnetic baffle 3, more
The circumferentially opposed fixation of a permanent magnet can not relatively rotate between that is, multiple permanent magnets.In addition, two adjacent permanent magnets
Magnetic pole angle between pole center line is θ, and permanent magnet is parallel magnetization, and magnetizing direction i.e. should perpendicular to the axial direction of permanent magnet
The axial direction of the oblique pole of rotor segment.Sheath 6 is arranged in 5 outside of first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft extremity piece,
And sheath 6 is fixedly connected with first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft extremity piece 5, realizes this turn with this
Multiple components of sub- step skewed pole it is relatively fixed.Wherein first rotating shaft extremity piece 1 and the second shaft extremity piece 5 can be only partially located at
It is fixedly connected in sheath 6 and with sheath 6, the another part at first rotating shaft extremity piece 1 and the second shaft end exposes to sheath 6 and energy
It is enough to be connect with other components.
In the structure of the oblique pole of rotor segment provided in an embodiment of the present invention, multiple permanent magnets and two shaft extremity pieces are logical
Cross with sheath 6 be fixedly connected realize the oblique pole of rotor segment multiple components it is relatively fixed, when so being assembled only
Sheath 6 and first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft extremity piece 5 are fixedly connected with, it is easy to operate just
Victory, structure are simple.In addition, being provided between two adjacent permanent magnets every magnetic baffle 3, can separate every magnetic baffle 3 adjacent
Permanent magnet between the magnetic line of force, can so separate the magnetic field conduction between permanent magnet, reach axial magnetism isolating effect well,
The case where avoiding axial leakage field.
Wherein, magnetic pole angle theta=2 π/LCM (Z, 2p) * (N-1) between the pole center line of two adjacent permanent magnets/
N, wherein Z is number of stator slots, and p is number of pole-pairs, and N is the number of permanent magnet, and LCM (Z, 2p) indicates the least common multiple of Z and 2p.When
So, the magnetic pole angle theta between the pole center line of two adjacent permanent magnets also can be set as predetermined angle, not limit herein
It is fixed.
In order to guarantee the circumferentially opposed fixation between multiple permanent magnets, wherein can permanent magnet with every magnetic baffle 3
Be provided with the strip groove a being arranged radially along it on counterface, i.e. strip groove a be located at permanent magnet with every magnetic baffle 3
On the face of contact, and strip groove a being arranged radially along permanent magnet, it is provided with and item with after the two sides of magnetic baffle 3
The convex ribs b of connected in star a male-female engagement, convex ribs b is fastened in strip groove a after assembly, is realized with this every magnetic baffle 3 and its
The permanent magnet of two sides it is circumferentially fixed, and then ensure that the circumferentially fixed of multiple permanent magnets.
Further, the convex ribs b every 3 two sides of magnetic baffle is staggered the setting of the angle θ, i.e. angle between two bar shaped convex ribs b is
θ, and the strip groove a on permanent magnet is vertically arranged with its magnetizing direction.It so can use the strip groove a on permanent magnet
It is positioned, prevents magnetizing direction from deviateing.
It is of course also possible to be arranged on permanent magnet and strip groove a cooperation every opening up strip groove a on magnetic baffle 3
Convex ribs b, is not limited thereto.Alternatively, the protrusion every 3 two sides of magnetic baffle is rectangular, while square groove is set on permanent magnet,
It is not limited thereto.
In order to reduce production cost, simplify structure, as shown in figure 3, the quantity of the permanent magnet of the oblique pole of the rotor segment can be with
It is two, and two permanent magnets are respectively the first permanent magnet 2 and the second permanent magnet 4.In this way, first rotating shaft extremity piece 1, the first permanent magnetism
Body 2 is sequentially coaxially arranged every magnetic baffle 3, the second permanent magnet 4 and the second shaft extremity piece 5 along the axial direction of the oblique pole of the rotor segment.
Certainly, the quantity of permanent magnet may be more, such as three, four etc., be not limited thereto.
To further simplify the structure, wherein sheath 6 and first rotating shaft extremity piece 1, multiple permanent magnets and the second shaft end
Part 5 can be interference fit, so easily facilitate assembly.Certainly, sheath 6 and first rotating shaft extremity piece 1, multiple permanent magnets and
Second shaft extremity piece 5 can also be clamping or threaded connection, be not limited thereto.
Further, in order to improve the intensity of the oblique pole of the rotor segment, sheath 6 and between magnetic baffle 3 may be
It is full of cooperation.
Wherein, sheath 6 can make to be formed using nickel-base alloy, titanium alloy or carbon fibre material.Can so it guarantee
The intensity of sheath 6 allows to protect the safety high speed of the oblique pole of the rotor segment to run.
Permanent magnet can be formed using NdFeB material, and certain permanent magnet can also have other materials to make to be formed, than
Such as alnico alloy, it is not limited thereto.
The oblique pole of rotor segment provided in based on the above embodiment, the present invention also provides a kind of magneto, the permanent magnetism
Motor includes the oblique pole of any one rotor segment in above-described embodiment.Turn since the magneto uses in above-described embodiment
Sub- step skewed pole, so the beneficial effect of the magneto please refers to above-described embodiment.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.
The foregoing description of the disclosed embodiments enables those skilled in the art to implement or use the present invention.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the present invention.Therefore, of the invention
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (9)
1. a kind of oblique pole of rotor segment, which is characterized in that be sequentially coaxially arranged including the axial direction along the oblique pole of the rotor segment
First rotating shaft extremity piece (1), multiple permanent magnets and the second shaft extremity piece (5), multiple permanent magnets be solid cylindrical and
It is provided between two adjacent permanent magnets every magnetic baffle (3), the circumferentially opposed fixation of the multiple permanent magnets and adjacent
Magnetic pole angle between the pole center line of two permanent magnets is θ；
It further include being set in the first rotating shaft extremity piece (1), on the outside of multiple permanent magnets and the second shaft extremity piece (5) and with first
The sheath (6) that shaft extremity piece (1), multiple permanent magnets and the second shaft extremity piece (5) are fixedly connected with, the permanent magnet with institute
It states every being provided with the strip groove (a) being arranged radially along it on the counterface of magnetic baffle (3), and described every magnetic baffle (3)
Two sides be provided with the convex ribs (b) with the strip groove (a) cooperation, the strip groove (a) on the permanent magnet with
Its magnetizing direction is vertically arranged, and to be positioned using the strip groove (a) on the permanent magnet, prevents magnetizing direction inclined
From.
2. the oblique pole of rotor segment according to claim 1, which is characterized in that the magnetic pole angle
θ=2 π/LCM (Z, 2p) * (N-1)/N, wherein Z is number of stator slots, and p is number of pole-pairs, and N is the number of permanent magnet, LCM (Z,
2p) indicate the least common multiple of Z and 2p.
3. the oblique pole of rotor segment according to claim 1, which is characterized in that the convex ribs (b) every magnetic baffle (3) two sides
Be staggered the setting of the angle θ, and the strip groove (a) on the permanent magnet is vertically arranged with its magnetizing direction.
4. the oblique pole of rotor segment according to claim 1, which is characterized in that the quantity of the permanent magnet is two and difference
For the first permanent magnet (2) and the second permanent magnet (4).
5. the oblique pole of rotor segment according to claim 1, which is characterized in that the sheath (6) and first rotating shaft extremity piece
(1), multiple permanent magnets and the second shaft extremity piece (5) are interference fit.
6. the oblique pole of rotor segment according to claim 5, which is characterized in that the sheath (6) and described every magnetic baffle (3)
Between for interference fit.
7. the oblique pole of rotor segment according to claim 1 to 6, which is characterized in that the sheath (6) uses nickel
Based alloy, titanium alloy or carbon fibre material make to be formed.
8. the oblique pole of rotor segment according to claim 7, which is characterized in that the permanent magnet makees shape using NdFeB material
At.
9. a kind of magneto, which is characterized in that including the oblique pole of rotor segment such as of any of claims 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508360.7A CN106712343B (en) | 2015-08-18 | 2015-08-18 | Magneto and its oblique pole of rotor segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510508360.7A CN106712343B (en) | 2015-08-18 | 2015-08-18 | Magneto and its oblique pole of rotor segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106712343A CN106712343A (en) | 2017-05-24 |
| CN106712343B true CN106712343B (en) | 2019-08-23 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510508360.7A Active CN106712343B (en) | 2015-08-18 | 2015-08-18 | Magneto and its oblique pole of rotor segment |
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| Country | Link |
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| CN (1) | CN106712343B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462270B (en) * | 2018-03-06 | 2020-01-21 | 华中科技大学 | High-speed permanent magnet motor rotor structure without sheath |
| CN111725967B (en) * | 2020-07-02 | 2022-06-14 | 浙江省东阳市东磁诚基电子有限公司 | Magnetic pole suitable for columnar vibration motor and implementation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186967A (en) * | 1981-05-13 | 1982-11-17 | Hitachi Ltd | Rotor with permanent magnet |
| JP2005295722A (en) * | 2004-04-01 | 2005-10-20 | Seiko Precision Inc | Rotor and motor with this rotor |
| CN102684337A (en) * | 2012-05-14 | 2012-09-19 | 浙江大学 | Subsection skewed-pole type permanent magnet synchronous motor rotor |
| CN204886466U (en) * | 2015-08-18 | 2015-12-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent -magnet machine and rotor segmentation is utmost point to one side thereof |
-
2015
- 2015-08-18 CN CN201510508360.7A patent/CN106712343B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57186967A (en) * | 1981-05-13 | 1982-11-17 | Hitachi Ltd | Rotor with permanent magnet |
| JP2005295722A (en) * | 2004-04-01 | 2005-10-20 | Seiko Precision Inc | Rotor and motor with this rotor |
| CN102684337A (en) * | 2012-05-14 | 2012-09-19 | 浙江大学 | Subsection skewed-pole type permanent magnet synchronous motor rotor |
| CN204886466U (en) * | 2015-08-18 | 2015-12-16 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent -magnet machine and rotor segmentation is utmost point to one side thereof |
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| Publication number | Publication date |
|---|---|
| CN106712343A (en) | 2017-05-24 |
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Effective date of registration: 20190815 Address after: 519000 Guangdong city of Zhuhai Province Qianshan Co-patentee after: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. Patentee after: GREE ELECTRIC APPLIANCES Inc. OF ZHUHAI Address before: 519070 Guangdong city of Zhuhai province Rooster Hill Road No. 789 Building 9 (Science Building) Patentee before: Zhuhai Gree Energy Saving & Refrigerating Technology Resarch Center Co., Ltd. |