CN105226860A - A kind of motor rotor core structure - Google Patents
A kind of motor rotor core structure Download PDFInfo
- Publication number
- CN105226860A CN105226860A CN201510692223.3A CN201510692223A CN105226860A CN 105226860 A CN105226860 A CN 105226860A CN 201510692223 A CN201510692223 A CN 201510692223A CN 105226860 A CN105226860 A CN 105226860A
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- Prior art keywords
- rotor core
- permanent magnet
- magnet trough
- motor
- motor rotor
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Abstract
The invention discloses a kind of motor rotor core structure, comprise: rotor core and permanent magnet trough, spindle hole is offered at the axle center place of described rotor core, the quantity of described permanent magnet trough is even number and is evenly arranged at rotor core internal diameter maximum, the two ends of described permanent magnet trough have end, two ends of described permanent magnet trough are set to the step-like of indent " " or " " respectively, described step-like numbers of steps is at least one, the angle of described " " or " " is 90 ° ~ 150 °, the full circle external diameter of described step-like structure and rotor core is formed every magnetic bridge, make permanent magnet trough more near rotor core surface or suitable increase permanent magnet trough width, and proper extension is every the effective length of magnetic bridge, or rotor core appearance profile cuts along permanent magnet trough end, form classical motor salient-pole structure.By above-mentioned two kinds of modes, the present invention can make full use of the volume of rotor core, increases moment, improves the efficiency of motor.
Description
Technical field
The present invention relates to machine field, particularly relate to a kind of motor rotor core structure.
Background technology
Common internal permanent magnet synchronous motor is made up of stator, rotor, shell etc., and stator is formed by embedding winding after silicon steel plate stacking; Rotor is generally formed by the permanent magnet trough of silicon steel plate stacking, permanent magnet insertion rotor core.Existing permanent magnet trough mainly contains linear pattern, V-type, W type and U structure, is linear pattern and V-structure as shown in Figure 1 and Figure 2.And the end of most of permanent magnet trough adopts arcuate structure, near center axis location, the end of permanent magnet trough and rotor core outer contour form every magnetic bridge, the end of permanent magnet trough is caused to be vacated, vacate part waste, can not make full use of, namely can not fully effectively utilize rotor core volume, cause the decline in various degree of maximum power, efficiency; Conventional motor salient-pole structure is independent design, does not utilize the planform of permanent magnet trough to realize salient pole.
Summary of the invention
The technical problem that the present invention mainly solves is to provide a kind of motor rotor core structure, can make full use of the volume of rotor core, increases moment, improves the efficiency of motor.
For solving the problems of the technologies described above, the technical scheme that the present invention adopts is: provide a kind of motor rotor core structure, comprise: rotor core and permanent magnet trough, spindle hole is offered at the axle center place of described rotor core, the axle center of described spindle hole and the axle center of described rotor core are positioned at same straight line, the quantity of described permanent magnet trough is even number and is evenly arranged at rotor core external diameter maximum, the two ends of described permanent magnet trough have end respectively, it is characterized in that, the end, two ends of described permanent magnet trough is set to the step-like of indent " " or " " respectively, described step-like numbers of steps is at least one, the angle of described " " or " " is 90 ° ~ 150 °, formed every magnetic bridge between described step-like structure and the outline of rotor core, the described width range every magnetic bridge be between 0.4mm ~ 1mm and the ratio of its length and width more than 1.5.
Preferably, motor salient-pole structure is formed at described permanent magnet trough place.
Preferably, described rotor core extension cutting distance permanent magnet trough 0.4mm ~ 0.8mm, namely the distance of rotor core outer contour and indent " " or " " step is between 0.4mm ~ 0.8mm.
Preferably, the structure of described permanent magnet trough is: the one in linear pattern, circular arc, V-shape, W font, U-shaped.
Preferably, the angle of described " " or " " is 90 ° ~ 150 °.
Preferably, the outline of the described rotor core class circular arc that is circular arc or is made up of multi-section circular arc.
Preferably, at least three pilot holes are offered at the inner homogeneous of described rotor core.
Preferably, when the outline of rotor core is circular arc, be provided with and described step-like corresponding " " or " " structure at the external diameter maximum of described rotor core.
Preferably, the angle of described " " or " " is 90 °.
The invention has the beneficial effects as follows: 1, the two ends of described permanent magnet trough adopt step-like structure, and described " " or " " plays baffle effect, can fixed permanent magnet, changes the structure of gear inside rotor magnetite in the past; 2, " " or " " structure of described permanent magnet trough, because this 2 " " or " " structure are at the maximum of rotor core external diameter, ensure that while magnetic bridge effective width, the length of permanent magnet trough or width are maximized, thus rotor core space can be made full use of, the length of permanent magnet or width are maximized, thus improves power, efficiency; 3, described " " or " " and the acting in conjunction of rotor core outline, form classical salient-pole structure, effectively improves the torque of motor, efficiency; 4, described " " or " " structure, makes every magnetic bridge extended length, advantageously in the leakage field reducing permanent magnet; 5, the two ends of permanent magnet trough adopt " " or " " structure of inner concave shape, make permanent magnet closer to rotor core surface, reduce magnetic circuit loss, be conducive to improving electric efficiency, moment of torsion.
Accompanying drawing explanation
Fig. 1 is the structural representation of prior art one preferred embodiment;
Fig. 1-1 is the dimensional structure schematic diagram of prior art one preferred embodiment;
Fig. 2 is the structural representation of prior art embodiment 2;
Fig. 3 is the structural representation of a kind of motor rotor core structure one of the present invention preferred embodiment;
Fig. 3-1 is the close-up schematic view of end described in Fig. 3;
Fig. 4 is the structural representation of the embodiment of the present invention 2;
Fig. 4-1 is a kind of dimensional structure schematic diagram of the embodiment of the present invention 2;
Fig. 4-2 is another kind of dimensional structure schematic diagrames of the embodiment of the present invention 2;
Fig. 5 is the structural representation of the embodiment of the present invention 3;
Fig. 5-1 is the close-up schematic view of end described in the embodiment of the present invention 3;
In accompanying drawing, the mark of each parts is as follows: 1, rotor core, and 11, curved profile circular arc, 12, curved profile step, 2, permanent magnet, 21, permanent magnet trough, 22, the end of permanent magnet trough, 3, spindle hole, 4, pilot hole, 5, every magnetic bridge.
Embodiment
Below in conjunction with accompanying drawing, preferred embodiment of the present invention is described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Refer to Fig. 3 and Fig. 3-1, the embodiment of the present invention 1 comprises:
A kind of motor rotor core structure, comprise: rotor core 1, permanent magnet 2 and permanent magnet trough 21, spindle hole 3 is offered at the axle center place of described rotor core 1, the axle center of described spindle hole 3 and the axle center of described rotor core 1 are positioned at same straight line, the quantity of described permanent magnet trough 21 is four and is evenly arranged at rotor core 1 external diameter maximum, the two ends of described permanent magnet trough 21 have end 22 respectively, the end 22 of described permanent magnet trough is set to the step-like of indent " " or " " respectively, described step-like numbers of steps is one, the angle of described " " or " " is 90 °, formed between described step-like structure and the external diameter of rotor core 1 every magnetic bridge 5, the described width every magnetic bridge 5 is 0.5mm.The rotor core 1 outline place corresponding in the end 22 with described permanent magnet trough is provided with the corresponding curved profile step 12 of shape, " " or " " shape structure of described curved profile step 12 is corresponding with " " or " " structure of the end 22 of described permanent magnet trough, wherein, the end 22 of permanent magnet trough serves baffle effect, can fixed permanent magnet 2, change the structure of gear inside permanent magnet trough 21 in the past, " " or " " structure is placed in rotor core 1 radial direction, avoid the inverted structure of step in the past, namely gear is in rotor core 1 that side away from spindle hole 3, make to increase every magnetic bridge 5 size, Aspect Ratio every magnetic bridge increases to 4.2 by 3.8, thus permanent magnet 2 width can be increased or permanent magnet 2 is moved to rotor core 1 outline place.
Be illustrated in figure 4 embodiments of the invention 2, the class circular arc that the external diameter being distinguished as described rotor core 1 of this embodiment and embodiment 1 is made up of multi-section circular arc, wherein, be interior concave arc 11 at one end circular arc of the corresponding section, end 22 with permanent magnet trough, when this kind of structure, rotor core 1 outer radius corresponding in the end 22 with permanent magnet trough, no longer needs setting table stepped structure.The rotor core 1 of this kind of structure is only that rotor core structure is had any different, and the function of the end 22 of permanent magnet trough is identical with embodiment 1.
As Fig. 5, Fig. 5-1 is depicted as embodiments of the invention 3, the difference of this embodiment and embodiment 2 is, the end 22 " " of described permanent magnet trough or the numbers of steps of " " shape are three, makes to lengthen every magnetic bridge 5, advantageously in the leakage field reducing permanent magnet 2, improve the efficiency of motor.
As Figure 1-1, be the dimensional structure schematic diagram of a preferred embodiment in prior art, in figure, the two ends of permanent magnet 2 adopt arcuate structure, and the length of permanent magnet 2 is 21mm, and the distance at permanent magnet 2 outward flange distance rotor core 1 maximum outside diameter place is 3.6mm.And as shown in Fig. 4-1, it is a kind of dimensional structure schematic diagram of the embodiment of the present invention 2, as can be seen from the figure, the end 22 of permanent magnet trough adopt " " or " " step-like after, when permanent magnet 2 length is all 21mm, the distance at permanent magnet 2 outward flange distance rotor core 1 maximum outside diameter place is reduced into 3.3mm.And as shown in the Fig. 4-2, it is the another kind of dimensional structure schematic diagram of the embodiment of the present invention 2, as can be seen from the figure, the end 22 of permanent magnet trough adopt " " or " " step-like after, when the distance at permanent magnet 2 outward flange distance rotor core 1 maximum outside diameter place remains 3.6mm, the length of permanent magnet 2 can increase to 22.1mm.Therefore, the end 22 of permanent magnet trough applies described " " or " " structure and can make full use of rotor core 1 space, because this two " " or " " structure are at the maximum radius place of rotor core 1, while ensure that permanent magnet 2 effective width, the length of permanent magnet 2 is maximized, or while ensure that permanent magnet 2 length, permanent magnet 2 is maximized apart from the distance of spindle hole 3, effectively can increase moment, thus improve the efficiency of motor.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in other relevant technical fields, be all in like manner included in scope of patent protection of the present invention.
Claims (9)
1. a motor rotor core structure, comprise: rotor core and permanent magnet trough, spindle hole is offered at the axle center place of described rotor core, the axle center of described spindle hole and the axle center of described rotor core are positioned at same straight line, the quantity of described permanent magnet trough is even number and is evenly arranged at rotor core external diameter maximum, the two ends of described permanent magnet trough have end respectively, it is characterized in that, the end, two ends of described permanent magnet trough is set to the step-like of indent " " or " " respectively, described step-like numbers of steps is at least one, the angle of described " " or " " is 90 ° ~ 150 °, formed every magnetic bridge between described step-like structure and the outline of rotor core, the described width range every magnetic bridge be between 0.4mm ~ 1mm and the ratio of its length and width more than 1.5.
2. a kind of motor rotor core structure according to claim 1, is characterized in that, forms motor salient-pole structure at described permanent magnet trough place.
3. a kind of motor rotor core structure according to claim 1 and 2, it is characterized in that, described rotor core extension cutting distance permanent magnet trough 0.4mm ~ 0.8mm, namely the distance of rotor core outer contour and indent " " or " " step is between 0.4mm ~ 0.8mm.
4. a kind of motor rotor core structure according to claim 1, is characterized in that, the structure of described permanent magnet trough is: the one in linear pattern, circular arc, V-shape, W font, U-shaped.
5. a kind of motor rotor core structure according to claim 1, is characterized in that, the angle of described " " or " " is 90 ° ~ 150 °.
6. a kind of motor rotor core structure according to claim 1, is characterized in that, the class circular arc that the outline of described rotor core is circular arc or is made up of multi-section circular arc.
7. a kind of motor rotor core structure according to claim 1, is characterized in that, offer at least three pilot holes at the inner homogeneous of described rotor core.
8. a kind of motor rotor core structure according to claim 5, is characterized in that, when the outline of described rotor core is circular arc, is provided with and described step-like corresponding " " or " " structure at the external diameter maximum of described rotor core.
9. a kind of motor rotor core structure according to claim 5, is characterized in that, the angle of described " " or " " is 90 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692223.3A CN105226860A (en) | 2015-10-23 | 2015-10-23 | A kind of motor rotor core structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510692223.3A CN105226860A (en) | 2015-10-23 | 2015-10-23 | A kind of motor rotor core structure |
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| CN105226860A true CN105226860A (en) | 2016-01-06 |
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| CN201510692223.3A Pending CN105226860A (en) | 2015-10-23 | 2015-10-23 | A kind of motor rotor core structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988519A (en) * | 2017-06-02 | 2018-12-11 | 福建飞森动力有限公司 | A kind of four-pole permanent magnet electricity generator stator core |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570333A (en) * | 1983-10-28 | 1986-02-18 | General Electric Company | Method of making a permanent magnet rotor |
| CN201515268U (en) * | 2009-09-28 | 2010-06-23 | 中山大洋电机股份有限公司 | Rotor of permanent magnet synchronous motor |
| CN102214963A (en) * | 2010-04-01 | 2011-10-12 | 天津市松正电动科技有限公司 | Novel multi-layer structure of rotor core |
| CN202260701U (en) * | 2011-08-25 | 2012-05-30 | 江苏上骐集团有限公司 | AC permanent-magnet motor rotor structure |
| CN103107620A (en) * | 2011-11-14 | 2013-05-15 | 发那科株式会社 | Rotor of permanent magnet synchronous motor, motor and machine tool |
| CN204271774U (en) * | 2014-08-04 | 2015-04-15 | 北京超同步伺服股份有限公司 | A kind of high-speed permanent magnetic electro spindle inner electric machine rotor punching structure |
| CN204316210U (en) * | 2014-12-06 | 2015-05-06 | 大洋电机新动力科技有限公司 | The permagnetic synchronous motor of a kind of rotor and application thereof |
| US20150244215A1 (en) * | 2014-02-27 | 2015-08-27 | Kabushiki Kaisha Toyota Jidoshokki | Permanent magnet embedded type rotor of electric rotating machine and electric rotating machine |
| CN205081596U (en) * | 2015-10-23 | 2016-03-09 | 苏州爱知科技有限公司 | Electric motor rotor iron core structure |
-
2015
- 2015-10-23 CN CN201510692223.3A patent/CN105226860A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4570333A (en) * | 1983-10-28 | 1986-02-18 | General Electric Company | Method of making a permanent magnet rotor |
| CN201515268U (en) * | 2009-09-28 | 2010-06-23 | 中山大洋电机股份有限公司 | Rotor of permanent magnet synchronous motor |
| CN102214963A (en) * | 2010-04-01 | 2011-10-12 | 天津市松正电动科技有限公司 | Novel multi-layer structure of rotor core |
| CN202260701U (en) * | 2011-08-25 | 2012-05-30 | 江苏上骐集团有限公司 | AC permanent-magnet motor rotor structure |
| CN103107620A (en) * | 2011-11-14 | 2013-05-15 | 发那科株式会社 | Rotor of permanent magnet synchronous motor, motor and machine tool |
| US20150244215A1 (en) * | 2014-02-27 | 2015-08-27 | Kabushiki Kaisha Toyota Jidoshokki | Permanent magnet embedded type rotor of electric rotating machine and electric rotating machine |
| CN204271774U (en) * | 2014-08-04 | 2015-04-15 | 北京超同步伺服股份有限公司 | A kind of high-speed permanent magnetic electro spindle inner electric machine rotor punching structure |
| CN204316210U (en) * | 2014-12-06 | 2015-05-06 | 大洋电机新动力科技有限公司 | The permagnetic synchronous motor of a kind of rotor and application thereof |
| CN205081596U (en) * | 2015-10-23 | 2016-03-09 | 苏州爱知科技有限公司 | Electric motor rotor iron core structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108988519A (en) * | 2017-06-02 | 2018-12-11 | 福建飞森动力有限公司 | A kind of four-pole permanent magnet electricity generator stator core |
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