CN201754534U - Rotor of permanent-magnetic motor - Google Patents
Rotor of permanent-magnetic motor Download PDFInfo
- Publication number
- CN201754534U CN201754534U CN2010202494304U CN201020249430U CN201754534U CN 201754534 U CN201754534 U CN 201754534U CN 2010202494304 U CN2010202494304 U CN 2010202494304U CN 201020249430 U CN201020249430 U CN 201020249430U CN 201754534 U CN201754534 U CN 201754534U
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- rotor
- magnet steel
- convex closure
- magneto
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Abstract
The utility model provides a rotor of a permanent-magnetic motor, which comprises a rotor iron core, two magnetic steel channels and through holes. The rotor iron core is formed by iron core stamped sheets, n permanent magnets (n is an integer larger than or equal to two) are arranged in the iron core, the two magnetic steel channels respectively contain two magnets with the same poles and are in splayed arrangement, a distance between an opening with a larger distance between the two magnetic steel channels and the outer surface of the rotor iron core is smaller than a distance between an opening with a smaller distance between the two magnetic steel channels to the outer surface of the rotor iron core, and the through holes arranged on the iron core stamped sheets lead the iron core stamped sheets to be fixedly connected and is arranged at the opening position with the smaller distance between the two magnetic steel channels.
Description
Technical field
The utility model belongs to the magneto field, relates in particular to a kind of rotor of magneto.
Background technology
The rotor structure of magneto is varied at present, the most frequently used is surface-type rotor structure and built-in rotor structure two big classes, it is simple that wherein built-in magnet steel formula rotor structure has structural manufacturing process, the cost of material is low, advantages such as the good and easy control of machine operation characteristic, at present common built-in magnet steel formula rotor as shown in Figure 1, comprise the rotor core that is overrided to form by n sheet core stamping 11, permanent magnet 12 and be arranged on magnet steel groove on the core stamping, every utmost point has two permanent magnets 12, two permanent magnets 12 of homopolarity are separately positioned in two magnet steel grooves 13, these two magnet steel grooves 13 are connected and form " V " type, because two magnet steel grooves 13 are communicated with, maximum stress occurs in every magnetic bridge 14 places, the tensile strength that can reduce core stamping 11 promptly can make the intensity that reduces core stamping 11, thereby make rotor when high speed rotating or large load operation, produce distortion even damage, when but if two magnet steel grooves 13 are two individual slots, the weight that can increase core stamping can increase the leakage flux of two permanent magnets of homopolarity simultaneously, reduce the main magnetic circuit magnetic resistance simultaneously, thereby reduce the outputting power of motor when rotating.
The utility model content
The utility model can make the intensity that reduces core stamping for solving two magnet steel grooves that have two permanent magnets of homopolarity in the prior art during for connectivity slot, and two magnet steel grooves can increase the problem of leakage flux of two permanent magnets of homopolarity during for individual slots, a kind of rotor of magneto is provided, and the intensity that can strengthen core stamping can reduce magnetic flux simultaneously again and leak.
The utility model provides a kind of rotor of magneto, comprise the rotor core that forms by core stamping, be provided with n utmost point permanent magnet (n 〉=2 and n are integer) in the core stamping and be provided with hold two permanent magnets of homopolarity respectively two independently magnet steel grooves, described two magnet steel grooves are " eight " font, and two magnet steel slot pitches from bigger opening to the distance of rotor core outer surface less than the distance of the less opening of distance to the rotor core outer surface, described rotor comprises also and is arranged on the core stamping and makes the fixedly connected through hole of core stamping that described through hole is arranged on two magnet steel slot pitches from less opening part.
Further improve, described through hole is the pyriform hole.
Further improve, the less end of described pyriform bore dia to the distance of rotor core outer surface less than the distance of the bigger end of described pyriform bore dia to the rotor core outer surface.
Further improve, described two magnet steel slot pitches from bigger opening towards the rotor core outer surface be provided with two grooves, the center line of described each groove be arranged on corresponding two magnet steel slot pitches and be (360/2n)/2 π degree from the angle that the center line of the through hole at smaller opening place forms.
Further improve, the shape of described magnet steel groove and the outer surface of described permanent magnet adapt.
Further improve, described magnet steel groove comprises first projection and second projection of the drift angle outside that is arranged on described permanent magnet.
Further improve, described magnet steel groove also comprises two parallel first hypotenuse and second hypotenuses, and first convex closure and second convex closure, first convex closure, first hypotenuse, second convex closure, first projection, second hypotenuse and second projection are in turn connected to form the magnet steel groove of connection, described second convex closure is with respect to the outer surface of first convex closure away from described rotor core, and described first hypotenuse and second hypotenuse are all fitted with the outer surface of described permanent magnet.
Further improve, one end of described first convex closure is connected with and the first step portion of the permanent magnet outer surface of fitting, the other end of described first step portion is connected with an end of first projection, one end of described second convex closure is connected with and the second step portion of the permanent magnet outer surface of fitting, and the other end of described second step portion is connected with an end of second projection.
The rotor of the magneto that the utility model provides compared with prior art, two magnet steel grooves that hold two permanent magnets of homopolarity are two individual slots, two less opening parts of individual slots distance are provided with through hole, make the fixedly connected accuracy that can guarantee that core stamping laminates of core stamping by this through hole, can strengthen simultaneously the intensity of core stamping again, and this through hole is arranged on two less opening parts of individual slots distance, can further effectively reduce the leakage flux of main magnetic circuit between two permanent magnets, and then increase the magnetic resistance of main magnetic circuit.
Description of drawings
Fig. 1 is the part-structure schematic diagram of prior art rotor cross section;
Fig. 2 is the part-structure schematic diagram of rotor lateral cross section in the utility model;
Fig. 3 is the structural representation of the utility model rotor longitudinal cross-section;
Fig. 4 is the Distribution of Magnetic Field schematic diagram of the utility model rotor;
Fig. 5 is actual electrical magnetic wave and a theoretical electromagnetic comparison diagram in the one-period.
Embodiment
Clearer for technical problem, technical scheme and beneficial effect that the utility model is solved, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
As shown in Figures 2 and 3, the rotor of the magneto of a kind of embodiment of the present utility model, comprise the rotor core 1 that forms by core stamping 7, rotor core 1 is set in the rotating shaft 8, be provided with n utmost point permanent magnet 2 (n 〉=2 and n are integer) in the core stamping 7, and be provided with hold two permanent magnets 2 of homopolarity respectively two independently magnet steel grooves 3, described two magnet steel grooves 3 are " eight " font and are arranged on the core stamping 7, and the bigger opening of two magnet steel grooves, 3 distances to the distance of rotor core 1 outer surface less than apart from the distance of less opening to rotor core 1 outer surface, described rotor comprises also and is arranged on the core stamping 7 and makes the fixedly connected through hole 4 of core stamping 7 that described through hole 4 is arranged on the less opening part of two magnet steel grooves, 3 distances.
As shown in Figure 4, Distribution of Magnetic Field figure for permanent magnet machine rotor in the foregoing description, if only be that two permanent magnets 2 of homopolarity are " eight " when font is provided with, can produce the magnetic force that self produces from permanent magnet 2 at the less opening part of two permanent magnets, 2 distances and affact generation stray field on himself again, promptly increase the magnetic resistance of this place's self-closing magnetic circuit, thereby the magnetic flux of the main field that minimizing permanent magnet 2 is produced, also just reduce the magnetic resistance of main magnetic circuit, therefore be provided with through hole at the less opening part of two permanent magnets, 2 distances, just can effectively stop the magnetic force that self produces from permanent magnet 2 to affact on himself again, thereby suppress the magnetic resistance that two stray fields between the permanent magnet 2 promptly reduce the self-closing magnetic circuit effectively, further increase the magnetic resistance of main magnetic circuit.When making the multi-disc core stamping fixedly connected by this through hole 4 simultaneously, can be location hole with this through hole 4, thereby guarantee that core stamping laminates the positioning accuracy that forms rotor core 1, as shown in Figure 3, further, bolt 5 is passed described through hole 4 make the multi-disc core stamping fixedly connected, thereby can effectively strengthen the intensity of rotor core 1.
Further improve, described through hole 4 can make circular port, and is tri-angle-holed, under the preferable case, described through hole 4 is the pyriform hole, the less end of described pyriform bore dia to the distance of rotor core 1 outer surface less than the distance of the bigger end of described pyriform bore dia to rotor core 1 outer surface.Described through hole 4 is the pyriform hole, the pyriform hole can be positioned as close to the outer surface of two magnet steel grooves 3, can make two magnet steel grooves 3 not be communicated with the less end of described pyriform bore dia when can effectively reduce stray field so again near an end in pyriform hole, and the outer surface in pyriform hole also is more uniform to the distance of magnet steel groove 3 outer surfaces, also just guaranteed the intensity of core stamping.
Further improve, because the rotor core 1 actual electromagnetic wave that produces is similar trapezoidal wave, and the electromagnetic wave that electric system needs in theory is for sinusoidal wave, even therefore under the even situation of air gap, still can there be harmful magnetic field harmonic wave, and then cause noise of motor excessive, the problem that efficient reduces, as shown in Figure 5, because the angle at sinusoidal electromagnetic wave is general 15 °, 40 °, during the position of 65 ° and 95 °, the obvious amplitude of amplitude meeting of trapezoidal wave greater than required sine wave, thereby should produce a large amount of harmful magnetic field harmonic waves in the place, therefore the opening that described two magnet steel grooves, 3 distances are bigger towards the rotor core outer surface be provided with two grooves, the center line of described each groove is (360/2n)/2 π degree with being arranged on corresponding two magnet steel slot pitches from the angle of the center line formation of the through hole at smaller opening place, thereby make similar trapezoidal electromagnetic wave trend towards sinusoidal electromagnetic wave, thereby effectively reduce harmful magnetic field harmonic wave, further reduce the operating efficiency of the noise and the raising motor of motor.When the number of poles n of permanent magnet value not simultaneously, the value of above-mentioned angle is also just different, the number of poles n of permanent magnet is 2 in the present embodiment, the angle of the center line formation of the center line of each groove 6 and through hole 4 is 90/2 π.
Further improve, the outer surface of the shape of described magnet steel groove 3 and described permanent magnet 2 adapts, and makes when rotor core rotates, and can drive described permanent magnet 2 better and rotate.Further improve, described magnet steel groove 3 comprises first projection, 31 and second projection 32 of the drift angle outside that is arranged on described permanent magnet 2, and it is easier of in the described magnet steel groove 3 of permanent magnet 2 placements to make, can reduce the leakage flux at the drift angle place of permanent magnet 2 simultaneously.
Further improve, described magnet steel groove 3 also comprises two parallel first hypotenuse 33 and second hypotenuses 34, and first convex closure 35 and second convex closure 36, first convex closure 35, first hypotenuse 33, second convex closure 36, first projection 31, second hypotenuse 34 and second projection 32 are in turn connected to form the magnet steel groove 3 of connection, described second convex closure 36 is with respect to the outer surface of first convex closure 35 away from described rotor core 1, and described first hypotenuse 33 and second hypotenuse 34 are fitted with the outer surface of described permanent magnet 2.Convex closure is regular polygon or erose polygon, and first convex closure 35 is erose polygon in the present embodiment, and second convex closure 36 is trapezoidal.Further improve, one end of described first convex closure 35 is connected with and the first step portion 37 of permanent magnet 2 outer surfaces of fitting, the other end of described first step portion is connected with an end of first projection 31, one end of described second convex closure 36 is connected with and the second step portion 38 of permanent magnet 2 outer surfaces of fitting, and the other end of described second step portion 38 is connected with an end of second projection 32.Can reduce the leakage flux of permanent magnet 2 by first convex closure 35 and second convex closure 36.First step portion 37 and second step portion 38 can decompose centrifugal force and the electromagnet pull that permanent magnet 2 is subjected to along parallel direction and vertical direction, can reduce the pressure to the rotor core outer surface significantly, improve the speed of service of motor.
The rotor of the magneto that the utility model embodiment provides, be provided with two magnet steel grooves 3 that hold two permanent magnets 2 of homopolarity in the rotor, these two magnet steel grooves are two individual slots, two less opening parts of individual slots distance are provided with through hole 4, make the fixedly connected accuracy that can guarantee that core stamping laminates of core stamping by this through hole 4, can strengthen simultaneously the intensity of core stamping again, and this through hole 4 is arranged on two less opening parts of individual slots distance, can further effectively reduce the leakage flux of 2 main magnetic circuits of two permanent magnets, and then increase the magnetic resistance of main magnetic circuit.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. the rotor of a magneto, comprise the rotor core that forms by core stamping, be provided with n utmost point permanent magnet in the core stamping, n 〉=2 and n are integer, and be provided with hold two permanent magnets of homopolarity respectively two independently magnet steel grooves, described two magnet steel grooves are the setting of " eight " font, and two magnet steel slot pitches from bigger opening to the distance of rotor core outer surface less than the distance of the less opening of distance to the rotor core outer surface, it is characterized in that: described rotor comprises also and is arranged on the core stamping and makes the fixedly connected through hole of core stamping that described through hole is arranged on two magnet steel slot pitches from less opening part.
2. the rotor of magneto as claimed in claim 1, it is characterized in that: described through hole is the pyriform hole.
3. the rotor of magneto as claimed in claim 2 is characterized in that: the less end of described pyriform bore dia to the distance of rotor core outer surface less than the distance of the bigger end of described pyriform bore dia to the rotor core outer surface.
4. the rotor of magneto as claimed in claim 1, it is characterized in that: described two magnet steel slot pitches from bigger opening towards the rotor core outer surface be provided with two grooves, the center line of described each groove be arranged on corresponding two magnet steel slot pitches and be (360/2n)/2 π degree from the angle that the center line of the through hole at smaller opening place forms.
5. the rotor of magneto as claimed in claim 1, it is characterized in that: the shape of described magnet steel groove and the outer surface of described permanent magnet adapt.
6. the rotor of magneto as claimed in claim 5 is characterized in that: described magnet steel groove comprises first projection and second projection of the drift angle outside that is arranged on described permanent magnet.
7. the rotor of magneto as claimed in claim 6, it is characterized in that: described magnet steel groove also comprises two parallel first hypotenuse and second hypotenuses, and first convex closure and second convex closure, first convex closure, first hypotenuse, second convex closure, first projection, second hypotenuse and second projection are in turn connected to form the magnet steel groove of connection, described second convex closure is with respect to the outer surface of first convex closure away from described rotor core, and described first hypotenuse and second hypotenuse are all fitted with the outer surface of described permanent magnet.
8. the rotor of magneto as claimed in claim 7, it is characterized in that: an end of described first convex closure is connected with and the first step portion of the permanent magnet outer surface of fitting, the other end of described first step portion is connected with an end of first projection, one end of described second convex closure is connected with and the second step portion of the permanent magnet outer surface of fitting, and the other end of described second step portion is connected with an end of second projection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202494304U CN201754534U (en) | 2010-06-29 | 2010-06-29 | Rotor of permanent-magnetic motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202494304U CN201754534U (en) | 2010-06-29 | 2010-06-29 | Rotor of permanent-magnetic motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201754534U true CN201754534U (en) | 2011-03-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202494304U Expired - Lifetime CN201754534U (en) | 2010-06-29 | 2010-06-29 | Rotor of permanent-magnetic motor |
Country Status (1)
| Country | Link |
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| CN (1) | CN201754534U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790456A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor iron core, motor and assembling method of motor |
| CN103516148A (en) * | 2012-06-27 | 2014-01-15 | 丰田纺织株式会社 | Method for manufacturing rotor core |
| CN108352741A (en) * | 2015-11-02 | 2018-07-31 | 三菱电机株式会社 | Motor, rotor, compressor and refrigerating air conditioning device |
| CN108711973A (en) * | 2018-05-08 | 2018-10-26 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle |
| CN110249503A (en) * | 2016-12-01 | 2019-09-17 | 维迪科研究所 | Motor including angled inner permanent magnet type rotor |
| CN112910200A (en) * | 2021-03-16 | 2021-06-04 | 山东理工大学 | Production method of permanent magnet rotor of combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
-
2010
- 2010-06-29 CN CN2010202494304U patent/CN201754534U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102790456A (en) * | 2012-03-05 | 2012-11-21 | 珠海格力节能环保制冷技术研究中心有限公司 | Permanent magnet auxiliary synchronized reluctance motor rotor iron core, motor and assembling method of motor |
| CN103516148A (en) * | 2012-06-27 | 2014-01-15 | 丰田纺织株式会社 | Method for manufacturing rotor core |
| US9755489B2 (en) | 2012-06-27 | 2017-09-05 | Toyota Boshoku Kabushiki Kaisha | Method for manufacturing rotor core |
| CN108352741A (en) * | 2015-11-02 | 2018-07-31 | 三菱电机株式会社 | Motor, rotor, compressor and refrigerating air conditioning device |
| US11018535B2 (en) | 2015-11-02 | 2021-05-25 | Mitsubishi Electric Corporation | Motor, rotor, compressor, and refrigeration and air conditioning apparatus |
| CN110249503A (en) * | 2016-12-01 | 2019-09-17 | 维迪科研究所 | Motor including angled inner permanent magnet type rotor |
| CN108711973A (en) * | 2018-05-08 | 2018-10-26 | 珠海格力电器股份有限公司 | Rotor structure, permanent magnetism assist in synchronization reluctance motor and electric vehicle |
| CN112910200A (en) * | 2021-03-16 | 2021-06-04 | 山东理工大学 | Production method of permanent magnet rotor of combined permanent magnet and brushless electromagnetic hybrid excitation generator for automobile |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110302 |
|
| CX01 | Expiry of patent term |