CN102780294B - Permanent magnet motor - Google Patents
Permanent magnet motor Download PDFInfo
- Publication number
- CN102780294B CN102780294B CN201210301079.2A CN201210301079A CN102780294B CN 102780294 B CN102780294 B CN 102780294B CN 201210301079 A CN201210301079 A CN 201210301079A CN 102780294 B CN102780294 B CN 102780294B
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- Prior art keywords
- permanent magnet
- rotor yoke
- magneto
- compact heap
- detent
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- 230000001154 acute effect Effects 0.000 claims abstract description 6
- 239000003292 glue Substances 0.000 claims description 8
- 239000000853 adhesive Substances 0.000 abstract description 5
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a permanent magnet motor. The permanent magnet motor comprises a stator and a rotor arranged in the stator, wherein a rotor yoke, a permanent magnet and a magnetic pole of a pressing block are arranged on the rotor; the pressing block is fixedly arranged on the rotor yoke; a fixing part for clamping the permanent magnet between the pressing block and the rotor yoke is arranged on the pressing block; the permanent magnet comprises a top surface, a bottom surface, front and rear end faces and left and right side faces; the length of the bottom surface is greater than that of the top surface; the areas of the left and right side faces are smaller than those of the front and rear end faces; and included angles between the left and right side faces and the bottom surface are acute angles. According to the motor, the physical air gap between the stator and the rotor is more uniform, and the motor is conveniently assembled; and meanwhile, even if the motor operates in a high-temperature environment for a long time, the problem that the reliability is insufficient because the adhesive performance is reduced is solved, and the reliability of fixing the permanent magnet in the permanent magnet motor is improved.
Description
Technical field
The present invention relates to technical field of motors, more particularly, relate to a kind of magneto.
Background technology
Permanent magnet in magneto uses powdered metallurgical material manufacture usually; this permanent magnet can not bear very large impact forces; if do not carry out sufficient protection to it, permanent magnet is easy to, in the High Rotation Speed of motor, breakage occurs, and then affects the reliability of motor.Therefore, when designing magneto, not only will consider the active force between permanent magnet, the centrifugal force etc. when also will consider active force, the motor rotation of permanent magnet to the iron material of magnetic conduction suffered by permanent magnet, to realize the safekeeping to permanent magnet.
In existing magneto, epitrochanterian permanent magnet generally adopts surface-mount type structure or built-in structure.Wherein, the permanent magnet in " surface-mount type " magneto adopts the mixed method of binding-type, adhesive type or two kinds of modes to be fixed usually, but these fixing meanss all also exist some shortcomings.The fixing means of binding-type utilizes to be fixed permanent magnet without latitude band, and the physical air gap between motor stator and rotor can be caused to reduce, and causes the assembling difficulty of motor, be not suitable for the production in enormous quantities of magneto.The fixing means of adhesive type is then utilize glue that permanent magnet is pasted corresponding position, and this fixing means is suitable for the production in enormous quantities of magneto, but can decline due to glue viscosity when temperature raises, and therefore its fixing reliability is not enough.
Along with the raising of magneto power and performance, require also higher to the permanent magnet safety of magneto is fixing, existing fixed form can not meet the requirement of high-performance, high operational reliability.
By the above, how to provide a kind of magneto, to realize simplifying motor assembling, and improve the object of the fixing reliability of permanent magnet in magneto, become the technical problem that those skilled in the art need solution badly.
Summary of the invention
In view of this, the invention provides a kind of magneto, to realize simplifying motor assembling, and improve the object of the fixing reliability of permanent magnet in magneto.
For achieving the above object, the invention provides following technical scheme:
A kind of magneto, comprise stator and arrange in the stator and be provided with the rotor of magnetic pole, magnetic pole comprises rotor yoke and permanent magnet, permanent magnet comprises end face, bottom surface, front/rear end and left and right side, wherein, the area of left and right side is less than the area of front/rear end, and the length of bottom surface is greater than the length of end face, and the angle between left and right side and bottom surface is acute angle;
Also comprise the compact heap be fixedly installed on rotor yoke, compact heap is provided with by the fixed part of permanent magnet inlay card between compact heap and rotor yoke.
Preferably, in above-mentioned magneto, the longitudinal section of permanent magnet is trapezoidal, and fixed part is provided with the inclined surface fitted with left and right side.
Preferably, in above-mentioned magneto, left and right side is provided with detent, fixed part is provided with the positioning convex matched with detent.
Preferably, in above-mentioned magneto, the cross section of detent is rectangle or semicircle.
Preferably, in above-mentioned magneto, left and right side is cascaded surface, and the surface of fixed part is the cascaded surface fitted with left and right side.
Preferably, in above-mentioned magneto, left and right side comprises left surface and right flank, and the angle between left surface and bottom surface is not equal to the angle between right flank and bottom surface.
Preferably, in above-mentioned magneto, the bottom surface of permanent magnet is curved surface, and the surface of rotor yoke is the curved surface fitted with bottom surface.
Preferably, in above-mentioned magneto, multiple permanent magnet is arranged along the axis of rotor yoke on rotor yoke, is provided with for fixing and isolating the compact heap of adjacent permanent magnet between adjacent permanent magnet.
Preferably, in above-mentioned magneto, permanent magnet surfaces is provided with dope layer.
Preferably, in above-mentioned magneto, in the gap between permanent magnet and rotor yoke, be filled with glue.
The invention provides a kind of magneto, the rotor that this magneto comprises stator and arranges in the stator, rotor is provided with the magnetic pole comprising rotor yoke, permanent magnet and compact heap; Wherein, compact heap is fixedly installed on rotor yoke, compact heap is provided with by the fixed part of permanent magnet inlay card between compact heap and rotor yoke; Permanent magnet comprises end face, bottom surface, front/rear end and left and right side, and wherein, the length of bottom surface is greater than the length of end face, and the area of left and right side is less than the area of front/rear end, and the angle between left and right side and bottom surface is acute angle.
In magneto provided by the present invention, utilize compact heap to be pressed on rotor yoke by permanent magnet, form an overall magnetic pole.Compared with the fixing means of binding-type in prior art, the physical air gap in motor provided by the present invention between stators and rotators can not reduce, and is convenient to the assembling of motor, is suitable for the production in enormous quantities of motor; Compared with the fixing means of adhesive type in prior art, in motor provided by the present invention, adopt compact heap permanent magnet to be pressed in the surface of rotor yoke, even if motor is in hot environment during long-play, there is not the problem that the permanent magnet caused because of glue hydraulic performance decline fixes reliability deficiency, improve the fixing reliability of permanent magnet in magneto yet.
By the above, in magneto provided by the present invention, achieve by adopting novel fixed structure and simplify assembling, and improve the object of the fixing reliability of permanent magnet.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structural representation of magnetic pole in the magneto that Fig. 1 provides for the embodiment of the present invention;
The structural representation of permanent magnet in the magneto that Fig. 2 provides for the embodiment of the present invention;
The structural representation of compact heap in the magneto that Fig. 3 provides for the embodiment of the present invention;
The structural representation being provided with the permanent magnet of detent that Fig. 4 provides for the embodiment of the present invention;
The structural representation being provided with the permanent magnet of cascaded surface that Fig. 5 provides for the embodiment of the present invention;
The structural representation of the permanent magnet of the left-right asymmetry structure that Fig. 6 provides for the embodiment of the present invention;
The structural representation of the permanent magnet of another left-right asymmetry structure that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the annular block that Fig. 8 provides for the embodiment of the present invention;
Fig. 9 for bottom surface that the embodiment of the present invention provides be the structural representation of the permanent magnet of curved surface.
In above Fig. 1-9:
Rotor yoke 1, permanent magnet 2, compact heap 3, end face 20, bottom surface 21, front/rear end 22, left and right side 23, detent 24 and fixed part 30.
Embodiment
The embodiment of the invention discloses a kind of magneto, to realize simplifying motor assembling, and improve the object of the fixing reliability of permanent magnet in magneto.
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the invention discloses a kind of magneto, in magneto, include stators and rotators, rotor is provided with magnetic pole.
Please refer to Fig. 1, magnetic pole comprises rotor yoke 1, permanent magnet 2 and compact heap 3, and wherein, permanent magnet 2 is pressed on the surface of rotor yoke 1 by two compact heaps 3.
Permanent magnet 2 comprises end face 20, bottom surface 21, front/rear end 22 and left and right side 23, and wherein, the area of left and right side 23 is less than the area of front/rear end 22, in order to compress for compacted piece 3.The length of permanent magnet 2 upper bottom surface 21 is greater than the length of end face 20, and the angle between left and right side 23 and bottom surface 21 is acute angle.
Compact heap 3 is fixedly installed on rotor yoke 1, compact heap 3 is provided with fixed part 30, fixed part 30 by permanent magnet 2 inlay card between compact heap 3 and rotor yoke 1.
Compared with the motor that binding-type of the prior art is fixing, the physical air gap in motor provided by the present invention between stators and rotators is more even, is convenient to the assembling of motor, and therefore motor provided by the present invention is more suitable for the needs of production in enormous quantities.
Compared with the motor that adhesive type of the prior art is fixing, adopt compact heap 3 that permanent magnet 2 is pressed in the surface of rotor yoke 1 in motor provided by the present invention, even if when motor runs for a long time in hot environment, there is not the permanent magnet 2 caused because of glue hydraulic performance decline and fix insecure problem, improve the fixing reliability of permanent magnet 2 in magneto yet.
By the above, magneto provided by the present invention, by adopting novel permanent magnet 2 fixed form, achieves simplification assembling, improves the object that permanent magnet 2 fixes reliability.
Concrete, in the magneto that above-described embodiment provides, the longitudinal section of permanent magnet 2 is trapezoidal, understandable, and permanent magnet 2 is hexahedron as shown in Figure 2; Meanwhile, fixed part 30 is provided with the inclined surface can fitted with the left and right side 23 of permanent magnet 2, as shown in Figure 3.Can expect, behind surface permanent magnet 2 being placed into rotor yoke 1, its bottom surface 21 with larger area is attached to the surface of rotor yoke 1, then compact heap 3 is arranged on the two ends, left and right of permanent magnet 2, compress the left and right side 23 of permanent magnet 2, finally compact heap 3 is fixedly connected with rotor yoke 1, permanent magnet 2 can be made firmly to be fixed on the surface of rotor yoke 1.
In another embodiment of the invention, the left and right side 23 of permanent magnet 2 is respectively provided with a detent 24, the fixed part 30 of compact heap 3 is then provided with the positioning convex with this groove match.As shown in Figure 4, on the left and right side 23 of permanent magnet 2, be provided with the detent 24 that cross section is rectangle, meanwhile, fixed part 30 be provided with the positioning convex that cross section is similarly rectangle.Use compact heap 3 permanent magnet 2 is fixed to rotor yoke 1 on the surface after, positioning convex inserts in detent 24, makes permanent magnet 2 can not be moved in the circumference of rotor yoke 1 like this, improves the fixing reliability of permanent magnet 2.
Moreover in the magneto that the embodiment of the present invention provides, the left and right side 23 of permanent magnet 2 can be cascaded surface, and on compact heap 3, the surface of fixed part 30 is also cascaded surface that is corresponding, that can fit with permanent magnet 2 left and right side 23.Please refer to Fig. 5, the left and right side 23 of permanent magnet 2 is cascaded surface, and in order to fixed permanent magnet 2, the fixed part 30 of compact heap 3 is also stepped.
It will be appreciated by persons skilled in the art that first, mentioned left and right side 23 specifically comprises left surface and right flank in the above-described embodiments; And in the magneto provided at above-described embodiment, permanent magnet 2 is symmetrical structure, and the angle between its left surface and bottom surface 21 equals the angle between its right flank and bottom surface 21; And in the magneto provided in the embodiment of the present invention, do not repel the situation that permanent magnet 2 is unsymmetric structure, as shown in Figure 6, in another embodiment of the invention, the angle between permanent magnet 2 left surface and bottom surface 21 is not equal to the angle between its right flank and bottom surface 21; Again or as shown in Figure 7, the left surface of permanent magnet 2 is and the clinoplain of bottom surface 21 in acute angle, and its right flank is a cascaded surface.Secondly, in the magneto disclosed in the embodiment of the present invention, compact heap 3 can for having the block structure of hexahedral shape, and also can be ring-type or semicircular structure, as shown in Figure 8, the part on annular block 3 inner surface be the conical surface.
Further, at above-described embodiment provide on the basis of magneto, in the magneto that another embodiment of the present invention provides, the bottom surface 21 of permanent magnet 2 is the curved surface of evagination or indent, and the surface of rotor yoke 1 is the curved surface of the concave or convex that can fit with this curved surface.As shown in Figure 9, the surface of permanent magnet 2 is convex outward, and the surface of rotor yoke 1 is the inner sunken face matched with it, by the setting angle of adjustment permanent magnet 2 on rotor yoke 1, thus can realize the oblique pole of magnetic pole like this.It is envisioned that in the magneto provided at the present embodiment, the curved surface of indent that can also to be the bottom surface 21 of permanent magnet 2 be, and the surface of rotor yoke 1 is the curved surface of evagination.
In the magneto that above-described embodiment provides, the circumference that multiple permanent magnet 2 is centered around rotor yoke 1 is arranged, further, multiple permanent magnet 2 axially can also be arranged along it on rotor yoke 1.Can expect, in the magneto that the present embodiment provides, multiple permanent magnet 2 surrounds into a circle in the circumference of rotor yoke 1, and two ends are fixed with compact heap 3, form one group of magnetic pole; Meanwhile, many group magnetic poles axially stack along it on rotor yoke 1, thus can according to the needs of magneto, adjust its axially needed for the number of permanent magnet 2.
Concrete, when assembling the magneto that above-described embodiment provides, the securing members such as bolt are used to be fixed on rotor yoke 1 by compact heap 3, the reserved little gap between compact heap 3 and rotor yoke 1 when assembling, so that compact heap 3 can be applied to permanent magnet 2 one pretightning forces, make permanent magnet 2 difficult drop-off in the running.
Meanwhile, in the magneto that above-described embodiment provides, coating is had at the surface spraying of permanent magnet 2.Such as, some coating with salt fog resistance ability is coated with envelope to magnetic pole surfaces, strengthens the ability of the salt fog resistance corrosion of magnetic pole.Be understandable that, these coating are generally made up of multicomponent mixing, can normal temperature or low-temperature setting.
Further, in the magneto that above-described embodiment provides, in the gap between permanent magnet 2 and rotor yoke 1, glue is filled with.Due to foozle and the rigging error of each parts, certain gap is all left between permanent magnet 2 and rotor yoke 1, between permanent magnet 2 and permanent magnet, by utilizing the method for overall embedding, can will have the glue embedding of better filling capacity and cementability among gap, thus make permanent magnet 2, rotor yoke 1 and compact heap 3 become overall, prevent magneto operationally inner body vibrate.
In this specification, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (9)
1. a magneto, comprise stator and to be arranged in described stator and to be provided with the rotor of magnetic pole, described magnetic pole comprises rotor yoke and permanent magnet, described permanent magnet comprises end face, bottom surface, front/rear end and left and right side, wherein, the area of described left and right side is less than the area of described front/rear end, it is characterized in that, the length of described bottom surface is greater than the length of described end face, and the angle between described left and right side and described bottom surface is acute angle;
Also comprise the compact heap be fixedly installed on described rotor yoke, described compact heap is provided with by the fixed part of described permanent magnet inlay card between described compact heap and described rotor yoke;
Multiple described permanent magnet surrounds into a circle in the circumference of described rotor yoke, forms magnetic pole described in a group, and the described magnetic pole of many groups axially stacks along it on described rotor yoke;
The left and right side of described permanent magnet is provided with detent, described fixed part is provided with the positioning convex matched with described detent; Described detent is positioned at the middle part of above-mentioned left and right side, and the two ends of described detent are connected with described end face and described bottom surface respectively.
2. magneto according to claim 1, is characterized in that, the longitudinal section of described permanent magnet is trapezoidal, and described fixed part is provided with the inclined surface fitted with described left and right side.
3. magneto according to claim 1, is characterized in that, the cross section of described detent is rectangle or semicircle.
4. magneto according to claim 1, is characterized in that, described left and right side is cascaded surface, and the surface of described fixed part is the cascaded surface fitted with described left and right side.
5. magneto according to claim 1, is characterized in that, described left and right side comprises left surface and right flank, and the angle between described left surface and described bottom surface is not equal to the angle between described right flank and described bottom surface.
6. magneto according to claim 1, is characterized in that, the bottom surface of described permanent magnet is curved surface, and the surface of described rotor yoke is the curved surface fitted with described bottom surface.
7. magneto according to claim 1, is characterized in that, multiple described permanent magnet is arranged along the axis of described rotor yoke on described rotor yoke, is provided with for fixing and isolating the described compact heap of adjacent described permanent magnet between adjacent described permanent magnet.
8. magneto according to claim 1, is characterized in that, described permanent magnet surfaces is provided with dope layer.
9. magneto according to claim 1, is characterized in that, is filled with glue in the gap between described permanent magnet and described rotor yoke.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301079.2A CN102780294B (en) | 2012-08-22 | 2012-08-22 | Permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210301079.2A CN102780294B (en) | 2012-08-22 | 2012-08-22 | Permanent magnet motor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102780294A CN102780294A (en) | 2012-11-14 |
| CN102780294B true CN102780294B (en) | 2015-04-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210301079.2A Active CN102780294B (en) | 2012-08-22 | 2012-08-22 | Permanent magnet motor |
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| CN (1) | CN102780294B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106160270A (en) * | 2016-07-25 | 2016-11-23 | 惠州市大亚湾永昶电子工业有限公司 | A kind of VCM motor Magnet of improvement |
| CN110752682A (en) * | 2019-09-24 | 2020-02-04 | 江苏迈吉易威电动科技有限公司 | Outer rotor permanent magnet motor |
| CN112162449A (en) * | 2020-09-04 | 2021-01-01 | 上海比路电子股份有限公司 | Anti-shake structure, anti-shake system and camera device |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425709A (en) * | 2008-08-11 | 2009-05-06 | 隆鑫工业有限公司 | Permanent magnet generator rotor |
| CN201398102Y (en) * | 2009-06-22 | 2010-02-03 | 哈尔滨理工大学 | Rotor of a permanent magnet wind power generator |
| CN202749923U (en) * | 2012-08-22 | 2013-02-20 | 南车株洲电机有限公司 | Permanent magnet motor |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05161287A (en) * | 1991-11-29 | 1993-06-25 | Fanuc Ltd | Rotor of synchronous apparatus |
| JPH1198787A (en) * | 1997-09-22 | 1999-04-09 | Hitachi Ltd | AC generator for vehicles |
| JP4566336B2 (en) * | 2000-05-31 | 2010-10-20 | 株式会社ソディック | Synchronous machine rotor |
| JP5479008B2 (en) * | 2009-09-18 | 2014-04-23 | 株式会社ミツバ | Brushless motor |
| CN202178634U (en) * | 2011-07-30 | 2012-03-28 | 安徽同华新能源动力股份有限公司 | Rotor assembly of wind-driven power generator |
-
2012
- 2012-08-22 CN CN201210301079.2A patent/CN102780294B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101425709A (en) * | 2008-08-11 | 2009-05-06 | 隆鑫工业有限公司 | Permanent magnet generator rotor |
| CN201398102Y (en) * | 2009-06-22 | 2010-02-03 | 哈尔滨理工大学 | Rotor of a permanent magnet wind power generator |
| CN202749923U (en) * | 2012-08-22 | 2013-02-20 | 南车株洲电机有限公司 | Permanent magnet motor |
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| Publication number | Publication date |
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| CN102780294A (en) | 2012-11-14 |
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Address after: 412000 Hunan Province, Zhuzhou Shifeng District Tianxin high-tech park Patentee after: CRRC ZHUZHOU ELECTRIC CO., LTD. Address before: 412000 Hunan Province, Zhuzhou Shifeng District Tianxin high-tech park Patentee before: CSR Zhuzhou Electric Machine Co., Ltd. |