CN201490788U - Rotor of permanent magnet motor - Google Patents
Rotor of permanent magnet motor Download PDFInfo
- Publication number
- CN201490788U CN201490788U CN2009202222063U CN200920222206U CN201490788U CN 201490788 U CN201490788 U CN 201490788U CN 2009202222063 U CN2009202222063 U CN 2009202222063U CN 200920222206 U CN200920222206 U CN 200920222206U CN 201490788 U CN201490788 U CN 201490788U
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- rotor
- magnet steel
- magnet
- permanent
- electric machine
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Abstract
The utility model discloses a rotor of a permanent magnet motor, which belongs to the technical field of permanent magnet motors. The rotor comprises a rotor body and magnetic steel grooves formed on the radial edge of the rotor; and the external opening of each magnetic steel groove is smaller or equal to the internal opening thereof in size. The rotor is simple in structure and simple and convenient in use.
Description
Technical field
The utility model relates to the permanent magnet motor technical field, particularly a kind of permanent-magnet electric machine rotor.
Background technology
Permanent magnet motor is a kind of motor that utilizes permanent magnet that magnetic field is provided, and is energy-efficient with it, power density is high and characteristics such as torque density height and being widely used.Permanent magnet motor is by the magnet steel magnetic poles, and magnet steel is fixed on rotor surface or is embedded in the rotor, and its fixing and processing method all is that the structure by rotor is determined, so the structural design of permanent-magnet electric machine rotor is the important technology of permanent magnet motor.
In the prior art, rotor is generally the disk or the cylinder of the symmetric triangular groove that has on the axial surface in pairs.
Magnet steel is fixed on two kinds of methods is generally arranged on the rotor of this structure:
One, the outer subsides method of magnet steel.Referring to Fig. 1, the outer subsides method of magnet steel is not have latitude band (hereinafter to be referred as no latitude band) with the viscose glue glass fiber magnet steel 11 is fastened in the outer rim of rotor 12, the rotor 12 that winds is put into baking oven be heated to 200 ℃ and keep more than 8 hours, no latitude band is solidified, go up grinding machine then, the rotor after solidifying is ground the thickness of needs.
Two, magnet steel embedding inlay technique.Referring to Fig. 2, the magnet steel embedding inlay technique is to go out magnet steel groove 21 on rotor 22, and magnet steel is embedded in the magnet steel groove.
In realizing process of the present utility model, the inventor finds that above-mentioned prior art has following shortcoming at least:
In the first method, magnetic steel material generally is " neodymium iron boron " that contains rare element, and this magnet steel can produce the demagnetization phenomenon under 200 ℃ of high temperature, if after magnetize, must be equipped with magnet charger and various magnetized head, various, the complex process of equipment.
In the second method, leakage field was serious after magnet steel embedded rotor, was with magnetic processing then if magnet steel magnetized earlier, complex procedures, difficulty, if after magnetize, must be equipped with magnet charger and multiple magnetized head, various, the complex process of equipment.
Summary of the invention
In order to simplify technology, the utility model provides a kind of permanent-magnet electric machine rotor.Described technical scheme is as follows:
A kind of permanent-magnet electric machine rotor comprises: rotor body and the magnet steel groove that is distributed in the rotor radial edge, the outside opening of each described magnet steel groove is less than or equal to its inside opening.
Described magnet steel groove is a dovetail groove.
Described magnet steel groove is the dovetail groove of being made up of moulding aluminum strip and rotor.
Described magnet steel groove is a straight trough.
Described rotor is positioned at the inside or the outside of stator.
Described dovetail groove is to be formed by the part of exposing rotor in the moulding aluminum strip and described rotor itself.
The beneficial effect of the technical scheme that the utility model embodiment provides is:
By improving the shape and the structure of permanent-magnet electric machine rotor upper magnetic steel groove, thereby changed the fixedly method of magnet steel, making rotor can avoid the magnet steel external labeling type in use needs heated baking, band magnetic to grind the serious leakage field with the embedded generation of magnet steel, the shortcoming of band magnetic processing, it is simple to reach technology, purpose easy to use.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the profile after rotor of the prior art pastes magnet steel outward;
Fig. 2 is the profile behind the embedded magnet steel of rotor of the prior art;
Fig. 3 is the profile after a kind of dovetail groove that the utility model embodiment provides inserts magnet steel;
Fig. 4 is the profile after another kind of dovetail groove that the utility model embodiment provides inserts magnet steel;
Fig. 5 is the profile after a kind of straight trough that the utility model embodiment provides inserts magnet steel.
11 magnet steel, 12 rotors;
21 magnet steel grooves, 22 rotors;
30 rotors, 31 axis holes, 32 ventilation holes (lightening hole), 33 dovetail grooves, 34 magnet steel;
40 rotors, 41 axis holes, 42 ventilation holes (lightening hole), 43 dovetail grooves, 44 moulding aluminum strips, 45 magnet steel;
50 rotors, 51 axis holes, 52 ventilation holes (lightening hole), 53 straight troughs, 54 magnet steel.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearer, the utility model execution mode is described in further detail below in conjunction with accompanying drawing.
Embodiment 1
Referring to Fig. 3, the utility model embodiment provides a kind of permanent-magnet electric machine rotor, and this rotor has the dovetail groove of symmetry in twos on its axial surface.
Specifically comprise: be arranged on axis hole 31, ventilation hole (lightening hole) 32 and the dovetail groove 33 that is distributed in the rotor radial edge on the rotor 30.
Wherein, dovetail groove 33 is more little a kind of grooves of outside more extension opening on the rotor radius, and its outside opening is less than its inside opening, and its distribution can be symmetrically distributed in the rotor radial edge in pairs, also other spread patterns can be arranged, and does not do concrete qualification in the present embodiment.
Wherein, rotor is one independent whole or combined by the multi-disc rotor punching, does not do concrete qualification in the present embodiment.
Need to prove, when magnet steel 34 is installed, the contact-making surface of magnet steel 34 is coated with anaerobic adhesive, then along the axial insertion dovetail groove 33 of rotor 30, under the bonding force and the fixation of outside opening radius of anaerobic adhesive less than the dovetail groove of inside opening radius, magnet steel 34 can bear the thousands of commentaries on classics of per minute even more high-revolving centrifugal force and can not come off, and can be used for high-speed motors such as permanent magnet synchronous motor and brushless DC motor, does not do qualification in the present embodiment.
By improving the shape and the structure of permanent-magnet electric machine rotor upper magnetic steel groove, thereby changed the fixedly method of magnet steel, making rotor can avoid the magnet steel external labeling type in use needs heated baking, band magnetic to grind and the serious leakage field of the embedded generation of magnet steel, the shortcoming of band magnetic processing, it is simple to reach technology, purpose easy to use.
Embodiment 2
As shown in Figure 4, the utility model embodiment provides a kind of permanent-magnet electric machine rotor, this rotor on its axial surface by form by moulding aluminum strip and rotor itself in twos the symmetry dovetail groove.
Specifically comprise: be arranged on axis hole 41, the ventilation hole (lightening hole) 42 on the rotor 40 and be symmetrically distributed in the dovetail groove 43 at rotor radial edge in pairs, the outside opening of each combined magnetic steel tank is less than its inside opening.
Wherein, because the aluminum magnetic resistance is bigger, so the rotor of this structure leakage field when using is littler.
The method of installation magnet steel 45 is identical with the installation method among the embodiment 1, does not repeat them here.Under anaerobic adhesive and dovetail double action, magnet steel 45 can bear the thousands of commentaries on classics of per minute even higher centrifugal force and can not come off, and can be used for high-speed motors such as permanent magnet synchronous motor and brushless DC motor, does not do qualification in the present embodiment.
The utility model is by improving the shape and the structure of permanent-magnet electric machine rotor upper magnetic steel groove, thereby changed the fixedly method of magnet steel, making rotor can avoid the magnet steel external labeling type in use needs heated baking, band magnetic to grind shortcoming serious with the leakage field of the embedded generation of magnet steel, the processing of band magnetic, it is simple to reach technology, purpose easy to use.
Embodiment 3
As described in Figure 5, the utility model embodiment provides a kind of permanent-magnet electric machine rotor, and this rotor has the straight trough of symmetry in twos on its axial surface.
Specifically comprise: be arranged on axis hole 51, the ventilation hole (lightening hole) 52 on the rotor 50 and be symmetrically distributed in the straight trough 53 at rotor radial edge in pairs.
This type of epitrochanterian straight trough is a kind of special case of dovetail groove, is applicable to the permanent magnet motor of low-speed running.After magnet steel 54 was bonding, the ability of its centrifugal force resistant was much larger than the ability of anti-tangential force, and for slowspeed machine, magnet steel centrifugal force is very little, just can satisfy the requirement of fixing as long as improve its anti-tangential ability.And this mode magnet steel cooperates simply with the magnet steel groove, especially is fit to solid rotor, and the processing of magnet steel groove can be adopted and mill processing, and technology is simple.
The utility model is by improving the shape and the structure of permanent-magnet electric machine rotor upper magnetic steel groove, thereby changed the fixedly method of magnet steel, making rotor can avoid the magnet steel external labeling type in use needs heated baking, band magnetic to grind shortcoming serious with the leakage field of the embedded generation of magnet steel, the processing of band magnetic, it is simple to reach technology, purpose easy to use.
The above only is preferred embodiment of the present utility model, and is in order to restriction the utility model, not all within spirit of the present utility model and principle, any modification of being done, is equal to replacement, improvement etc., all should be included within the protection range of the present utility model.
Claims (6)
1. a permanent-magnet electric machine rotor is characterized in that, comprising: rotor body and the magnet steel groove that is distributed in the rotor radial edge, the outside opening of each described magnet steel groove is less than or equal to its inside opening.
2. according to the permanent-magnet electric machine rotor described in the claim 1, it is characterized in that described magnet steel groove is a dovetail groove.
3. according to the permanent-magnet electric machine rotor described in the claim 1, it is characterized in that described magnet steel groove is the dovetail groove of being made up of moulding aluminum strip and rotor.
4. according to the permanent-magnet electric machine rotor described in the claim 1, it is characterized in that described magnet steel groove is a straight trough.
5. according to any one permanent-magnet electric machine rotor in the claim 1 to 4, it is characterized in that described rotor is positioned at the inside or the outside of stator.
6. according to the permanent-magnet electric machine rotor described in the claim 3, it is characterized in that described dovetail groove is to be formed by the part of exposing rotor in the moulding aluminum strip and described rotor itself.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202222063U CN201490788U (en) | 2009-08-26 | 2009-08-26 | Rotor of permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202222063U CN201490788U (en) | 2009-08-26 | 2009-08-26 | Rotor of permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201490788U true CN201490788U (en) | 2010-05-26 |
Family
ID=42429655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202222063U Expired - Fee Related CN201490788U (en) | 2009-08-26 | 2009-08-26 | Rotor of permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201490788U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468718A (en) * | 2010-11-05 | 2012-05-23 | 腾禾精密电机(昆山)有限公司 | Process for fixing resin impregnated adhesive tapes for rotor |
| CN102468699A (en) * | 2010-11-15 | 2012-05-23 | 腾禾精密电机(昆山)有限公司 | Rotor of motor |
| CN106208436A (en) * | 2016-08-15 | 2016-12-07 | 中国船舶重工集团公司第七〇二研究所 | A kind of direct-drive permanent-magnetism motor |
-
2009
- 2009-08-26 CN CN2009202222063U patent/CN201490788U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102468718A (en) * | 2010-11-05 | 2012-05-23 | 腾禾精密电机(昆山)有限公司 | Process for fixing resin impregnated adhesive tapes for rotor |
| CN102468718B (en) * | 2010-11-05 | 2014-05-28 | 腾禾精密电机(昆山)有限公司 | Process for fixing resin impregnated adhesive tapes for rotor |
| CN102468699A (en) * | 2010-11-15 | 2012-05-23 | 腾禾精密电机(昆山)有限公司 | Rotor of motor |
| CN106208436A (en) * | 2016-08-15 | 2016-12-07 | 中国船舶重工集团公司第七〇二研究所 | A kind of direct-drive permanent-magnetism motor |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: NANTONG DAREN MOTOR INC. Free format text: FORMER OWNER: BEIJING MING ZHENG WEI YUAN (MZWY) MOTOR TECHNOLOGIES LTD. Effective date: 20140128 |
|
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 100071 FENGTAI, BEIJING TO: 226300 NANTONG, JIANGSU PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20140128 Address after: 226300 Nantong, hi tech Industrial Development Zone, Jiangsu, Qingdao, two West Road, Henan Patentee after: NANTONG DAREN MOTOR INC. Address before: 100071, Beijing, Fengtai District Fengtai intersection 139, science and technology building, room 130 Patentee before: Beijing Ming Zheng Wei Yuan (MZWY) Motor Technologies Ltd. |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100526 Termination date: 20170826 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |