CN204012986U - A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor - Google Patents
A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor Download PDFInfo
- Publication number
- CN204012986U CN204012986U CN201420353319.8U CN201420353319U CN204012986U CN 204012986 U CN204012986 U CN 204012986U CN 201420353319 U CN201420353319 U CN 201420353319U CN 204012986 U CN204012986 U CN 204012986U
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- groove
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- 230000001360 synchronised effect Effects 0.000 title claims description 11
- 239000000696 magnetic material Substances 0.000 claims description 5
- 229910000976 Electrical steel Inorganic materials 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000011900 installation process Methods 0.000 abstract description 4
- 230000005389 magnetism Effects 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 230000010349 pulsation Effects 0.000 description 5
- 229920001651 Cyanoacrylate Polymers 0.000 description 4
- 239000004830 Super Glue Substances 0.000 description 4
- 239000004020 conductor Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000003825 pressing Methods 0.000 description 4
- 238000004080 punching Methods 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 230000005672 electromagnetic field Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000009827 uniform distribution Methods 0.000 description 3
- 230000001186 cumulative effect Effects 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000007514 turning Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses a kind of outer rotor permanent magnet fixed structure, comprise rotor core body, polylith permanent magnet and every magnetic stripe, in rotor core body, be furnished with vertically the first draw-in groove, every magnetic stripe, by the first intercell connector, be connected and form with the second intercell connector, the first intercell connector snaps in described the first draw-in groove, adjacent the second intercell connector is formed with the second draw-in groove of clamping permanent magnet, and permanent magnet snaps in described the second draw-in groove.Frictional force in installation process between permanent magnet and rotor core body is less, easily installs.Permanent magnetism physical efficiency is designed to multistage form, axial design total length is unrestricted.The first draw-in groove can not need screw to fix effectively fixing every magnetic stripe, every the narrowed width of magnetic stripe, can relatively reduce motor axial dimension, is convenient to install, and production efficiency improves.By the adjacent end face every magnetic stripe, coordinate the second draw-in groove forming to be fixed permanent magnet, without processing screw hole, guaranteed not distort in the magnetic field on same magnetic pole, vibration is reduced, noise reduces, and motor performance is improved.
Description
Technical field
The utility model relates to technical field of motors, especially relates to a kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor.
Background technology
Existing synchronous machine is because its stable performance, efficiency and power factor are compared with high, invariablenes turning speed and be applied to more and more widely each industrial circle, and wherein, the permagnetic synchronous motor in synchronous machine is because Er Bei motor simple in structure manufacturer extensively adopts.
Known according to the principle of external rotor permanent magnet synchronous machine: due to the electromagnetic field interaction of stator winding and permanent magnet, permanent magnet produces electromagnetic attraction radially, again because electromagnetic field effect produces the thrust of circumference on tangential on permanent magnet, and in order to reduce vibration and the torque pulsation of motor, the necessary circumference uniform distribution of permanent magnet is on rotor core inner surface.Therefore how to make permanent magnet realize reliably radially and tangential the fixing, make permanent magnet even circumferential to be distributed in rotor core internal circular surfaces, reduce the key technology that permanent magnet material use amount becomes the design of external rotor type permanent magnetism synchronous machine of circumference.
In order to address the above problem, there is at present following several technology:
One, adopt super glue to paste the fixed form of permanent magnet
The rotor core of this scheme is to be made by magnetic conductive material, bonding by super glue between permanent magnet and rotor contact-making surface, permanent magnet radially with tangential fixing all by the bonding force realization of super glue itself.
There is following shortcoming in this scheme:
Because the bonding force of super glue is subject to the impact of barbola work and environment (such as pasting the factors such as temperature at that time, humidity, operating time) to a great extent, operating procedure has directly determined sticking effect, the fixed structure reliability of this permanent magnet is not high, after long-time use, the easy ageing failure of glue, permanent magnet easily comes off.
Because this structure does not have detent mechanism in a circumferential direction, permanent magnet is difficult to realize circumference uniform distribution when pasting, and causes the vibration of motor and noise larger, and torque pulsation is larger.If realize permanent magnet circumference uniform distribution, must, by frock clamp, technology difficulty and running cost have been increased.
Two, adopt the fixed form of screw
The rotor core of this scheme is to be made by magnetic conductive material, in rotor core inner circle, be processed with installation screw, on permanent magnet, be processed with installation through hole, with screw, pass the through hole on permanent magnet, and be locked on the screw of rotor core, realize permanent magnet radially, tangential fixing.
There is following shortcoming in this scheme:
Screw processing is because of difficulty, and screw processing exists deviation, and screw and via clearance coordinate, make permanent magnet circumference tangential arrange inhomogeneously, the vibration of motor and torque pulsation are large containing quantitative change.
The installation through hole of permanent magnet causes the magnetic field of same magnetic pole to distort, and motor can produce corresponding high order harmonic component, and motor produces vibration and extra noise.
Hold-down screw had both been subject to permanent magnet pulling force radially, was subject to again the tangential thrust of circumference, easily tired and fracture or come off of screw, and reliability is low.
Three, every magnetic stripe screw fixed structure
The rotor core of this scheme is to be made by magnetic conductive material, in rotor core inner circle, is processed with installation screw, is processed with installation through hole on magnetic stripe, every magnetic stripe both sides, has inclined-plane.With screw, through every the through hole of magnetic stripe, being tightened to every magnetic strip lock on the corresponding screw of rotor core, every magnetic stripe two sides, compress permanent magnet, realize radially and tangential the fixing of circumference.
There is following shortcoming in this scheme:
Screw processing is because of difficulty, and screw machining deviation and screw and via clearance coordinate, and make to arrange at iron core inner circle circumference every magnetic stripe inhomogeneous, uses permanent magnet behind magnetic stripe location to arrange also inhomogeneous, and it is large that the vibration of motor and torque pulsation become.Screw had both been subject to radial pull, was subject to again circumference tangential thrust, easily tired and fracture or come off of screw, and permanent magnet fixedly reliability is low.
Owing to will process screw mounting hole on magnetic stripe, in order to guarantee intensity and the installing space every magnetic stripe, every the wider width of magnetic stripe, take up room larger, must lengthen the axial length of motor.
Four, permanent magnet end face inclined-plane is fixed mode
The rotor core of this scheme is to be made by magnetic conductive material, and rotor core one end is processed with the inclined-plane coordinating with permanent magnet end face, and the other end is installed has the pressing plate that coordinates inclined-plane with permanent magnet end face, and permanent magnet is installed on rotor internal circular surfaces vertically.By the inclined-plane on epitrochanterian inclined-plane and pressing plate, from two ends, compress permanent magnet, realize the radial and axial fixing of permanent magnet.
There is following shortcoming in this scheme:
Due to permanent magnet with every the width manufacturing tolerance of magnetic stripe, when a plurality of permanent magnets with after magnetic stripe is assembled into rotor inner circle, can produce cumulative limit, and quantity is more, cumulative limit is larger, so permanent magnet and be difficult to hold every magnetic stripe width dimensions.When width dimensions is less than normal, permanent magnet and produce gap every between magnetic stripe, permanent magnet cannot be distributed on inner periphery, and it is large that torque pulsation, vibration and noise become; When width is bigger than normal, permanent magnet and every magnetic stripe can normal mounting to rotor inner periphery, cause and install unsuccessfully.
Stressed effect analysis from permanent magnet at electromagnetic field, the effective length of permanent magnet is only bond length, the tip portion at permanent magnet two ends can not produce electromagnetic torque, belongs to invalid target, has wasted permanent magnet material.Secondly, permanent magnet and be difficult to hold every the manufactured size of magnetic stripe length, if permanent magnet than long every magnetic stripe, pressing plate only compresses permanent magnet, every magnetic stripe, will become flexible; If longer than permanent magnet every magnetic stripe, side guide only compresses every magnetic stripe, does not compress permanent magnet, cannot effectively realize the tangential of permanent magnet and radially fixing; If it is short that both length is all got, both can produce looseningly, cannot realize permanent magnet tangential and radially fixing.And because permanent magnet is that line cutting forms, be subject to processing the restriction of technique, the Design of length of permanent magnet can not be oversize, and its design is subject to larger restriction.
The installation thrust of pressing plate is difficult to control, if pressure is excessive, easily damages permanent magnet and every magnetic stripe; If pressure is too small, the frictional force that thrust produces is not enough to meet the requirement of circle tangential force, causes permanent magnet tangentially to move, and when serious, may make motor run well.
Summary of the invention
Based on this, the utility model is to overcome the defect of prior art, provide a kind of with low cost, manufacture efficiency high, vibrate outer rotor permanent magnet fixed structure little and that noise is low.
Its technical scheme is as follows: a kind of outer rotor permanent magnet fixed structure, comprise rotor core body, polylith permanent magnet and every magnetic stripe, in described rotor core body, be furnished with vertically the first draw-in groove of a plurality of bar shapeds, described in each, every magnetic stripe, by the first intercell connector, be connected and form with the second intercell connector, described the first intercell connector snaps in described the first draw-in groove, adjacent described the second intercell connector is formed with the second draw-in groove of permanent magnet described in clamping, and described permanent magnet snaps in described the second draw-in groove.
Below further technical scheme is described:
Preferably, described the first draw-in groove radial section is trapezoidal, and the shape of described the first intercell connector and described the first draw-in groove adapt.
Preferably, described trapezoidal be isosceles trapezoid, interior angle is 30 °～60 °.
Preferably, the shape of described the second intercell connector is identical with the shape of described the first intercell connector.
Preferably, a plurality of described the first draw-in grooves are distributed on described rotor core body inner side, and described in each, two sides and described second draw-in groove of permanent magnet conflicted.
Preferably, describedly every magnetic stripe, by non-magnetic material, made.
Preferably, the both ends of the surface of described rotor core body are also connected with respectively core body installing rack and annular compressing member, and described compressing member is all conflicted every magnetic stripe, rotor core body with described.
Preferably, described rotor core body has described the first draw-in groove by polylith silicon steel sheet or steel plate punched form.
Preferably, also comprise that rotating shaft, rotating shaft are arranged with stator outward, described stator sleeve is located at described rotor core body toroidal magnet inner and that formed by permanent magnet described in polylith and is surrounded.
The utility model also provides a kind of long service life, the simple in structure and permagnetic synchronous motor being convenient to manufacture, comprises outer rotor permanent magnet fixed structure described in the utility model.
Below the principle of aforementioned techniques scheme, effect etc. are described:
1, permanent magnet axially packs in rotor core body, and the frictional force in installation process between monolithic permanent magnet and rotor core body is less, easily installs.Permanent magnetism physical efficiency is designed to multistage form, and permanent magnet axial design total length is unrestricted.In rotor core body, the first draw-in groove can not need screw to fix being effectively fixed on rotor core body every magnetic stripe, narrow every the variable-width of magnetic stripe, can relatively reduce motor axial dimension, is convenient to install, and production efficiency improves.By the adjacent end face every magnetic stripe, coordinate the second draw-in groove forming to be fixed permanent magnet, do not need processing screw hole on permanent magnet, guaranteed not distort in the magnetic field on same magnetic pole, vibration is reduced, noise reduces, and motor performance is improved.
2, rotor core is overrided to form by punching, and on the circumference of rotor punching inner circle, stamping-out has the first draw-in groove that circumference is divided equally, and every magnetic stripe, axially inserts in the first draw-in groove, through the permanent magnet behind magnetic stripe location, on circumference, is uniformly distributed.
3, every magnetic stripe, adopt non-magnetic material, all on circumference can uniform stressed every magnetic stripe, so shear resistent area is larger, shearing strength is high, realizes the good fixing effect of permanent magnet.
4, because the shearing resistance every magnetic stripe realizes the tangential fixing of permanent magnet, every the axial two sides of magnetic stripe, realize the radially fixing of permanent magnet, permanent magnet need not lean on both ends of the surface inclined-plane to compress to realize fixing, therefore, permanent magnet end flat is parallel with axis, there is not invalid target, can effectively save permanent magnet material.
Accompanying drawing explanation
Fig. 1 is the blast structural representation of outer rotor permanent magnet fixed structure described in the utility model embodiment;
Fig. 2 is sectional view radially after external rotor assembling described in the utility model embodiment;
Fig. 3 is the cutaway view at A-A place in Fig. 2;
Fig. 4 is every the structural representation of magnetic stripe described in the utility model embodiment.
Description of reference numerals:
10, rotating shaft, 20, stator, 30, permanent magnet, 40, every magnetic stripe, the 41, first intercell connector, the 42, second intercell connector, 50, rotor core body, the 51, first draw-in groove, the 52, second draw-in groove, 60, core body installing rack, 70, compressing member.
Embodiment
Below embodiment of the present utility model is elaborated:
As shown in Figure 1, outer rotor permanent magnet fixed structure described in the utility model, comprises rotor core body 50, polylith permanent magnet 30 and every magnetic stripe 40, is furnished with vertically the first draw-in groove 51 of a plurality of bar shapeds in described rotor core body 50.Referring again to Fig. 4, every magnetic stripe 40, by the first intercell connector 41, be connected and form with the second intercell connector 42 described in each, described the first intercell connector 41 snaps in described the first draw-in groove 51.Please refer to Fig. 2,3, adjacent described the second intercell connector 42 is formed with the second draw-in groove 52 of permanent magnet 30 described in clamping, and described permanent magnet 30 snaps in described the second draw-in groove 52.
Permanent magnet 30 axially packs in rotor core body 50, and in installation process, the frictional force of 50, permanent magnet 30 and rotor core body is less, easily installs.Permanent magnet 30 can be designed to multistage form, and axial design total length is unrestricted.In rotor core body 50, the first draw-in groove 51 can be fixed without screw being effectively fixed on rotor core body 50 every magnetic stripe 40, every the narrowed width of magnetic stripe 40, can relatively reduce motor axial dimension, is convenient to install, and production efficiency improves.By the adjacent end face every magnetic stripe 40, coordinate the second draw-in groove 52 forming to be fixed permanent magnet 30, do not need processing screw hole on permanent magnet 30, guaranteed not distort in the magnetic field on same magnetic pole, vibration is reduced, noise reduces, and motor performance is improved.
Wherein, described the first draw-in groove 51 radial sections are trapezoidal, and the shape of described the first intercell connector 41 and described the first draw-in groove 51 adapt.In the utility model embodiment, described trapezoidal be isosceles trapezoid, interior angle is 30 °～60 °.The shape of described the second intercell connector 42 is identical with the shape of described the first intercell connector 41.A plurality of described the first draw-in grooves 51 are distributed on described rotor core body 50 inner sides, and described in each, two sides and described second draw-in groove 52 of permanent magnet 30 conflicted.The both ends of the surface of described rotor core body 50 are also connected with respectively core body installing rack 60 and annular compressing member 70, and described compressing member 70 is all conflicted every magnetic stripe 40, rotor core body 50 with described.Describedly every magnetic stripe 40, by non-magnetic material, made.Silicon steel sheet or steel plate punched that described rotor core body 50 has described the first draw-in groove 51 by polylith form.Outer rotor permanent magnet 30 fixed structures described in the utility model also comprise rotating shaft 10, the outer stator 20 that is arranged with of rotating shaft 10, and described stator 20 is sheathed on described rotor core body 50 inside and is surrounded by the toroidal magnet of 30 formations of permanent magnet described in polylith.The utility model also provides a kind of long service life, the simple in structure and permagnetic synchronous motor being convenient to manufacture, and it comprises outer rotor permanent magnet fixed structure described in the utility model.
To sum up, the utlity model has following advantage:
1, permanent magnet 30 axially packs in rotor core body 50, and in installation process, the frictional force of 50, monolithic permanent magnet 30 and rotor core body is less, easily installs.Permanent magnet 30 can be designed to multistage form, and permanent magnet 30 axial design total lengths are unrestricted.In rotor core body 50, the first draw-in groove 51 can be fixed without screw being effectively fixed on rotor core body 50 every magnetic stripe 40, narrow every the variable-width of magnetic stripe 40, can relatively reduce motor axial dimension, is convenient to install, and production efficiency improves.By the adjacent end face every magnetic stripe 40, coordinate the second draw-in groove 52 forming to be fixed permanent magnet 30, do not need processing screw hole on permanent magnet 30, guaranteed not distort in the magnetic field on same magnetic pole, vibration is reduced, noise reduces, and motor performance is improved.
2, rotor core is overrided to form by punching, and on the circumference of rotor punching inner circle, stamping-out has the first draw-in groove 51 that circumference is divided equally, and every magnetic stripe 40, axially inserts in the first draw-in groove 51, through the permanent magnet 30 behind magnetic stripe 40 location, on circumference, is uniformly distributed.
3, every magnetic stripe 40, adopt non-magnetic materials, all on circumference can uniform stressed every magnetic stripe 40, so shear resistent area is larger, shearing strength is high, realizes the good fixing effect of permanent magnet 30.
4, because the shearing resistance every magnetic stripe 40 realizes the tangential fixing of permanent magnet 30, every the axial two sides of magnetic stripe 40, realize the radially fixing of permanent magnet 30, permanent magnet 30 need not lean on both ends of the surface inclined-plane to compress to realize fixing, therefore, permanent magnet 30 end flats are parallel with axis, there is not invalid target, can effectively save permanent magnet 30 materials.
The above embodiment has only expressed embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.
Claims (10)
1. an outer rotor permanent magnet fixed structure, it is characterized in that, comprise rotor core body, polylith permanent magnet and every magnetic stripe, in described rotor core body, be furnished with vertically the first draw-in groove of a plurality of bar shapeds, described in each, every magnetic stripe, by the first intercell connector, be connected and form with the second intercell connector, described the first intercell connector snaps in described the first draw-in groove, and adjacent described the second intercell connector is formed with the second draw-in groove of permanent magnet described in clamping, and described permanent magnet snaps in described the second draw-in groove.
2. outer rotor permanent magnet fixed structure according to claim 1, is characterized in that, described the first draw-in groove radial section is trapezoidal, and the shape of described the first intercell connector and described the first draw-in groove adapt.
3. outer rotor permanent magnet fixed structure according to claim 2, is characterized in that, described trapezoidal be isosceles trapezoid, interior angle is 30 °～60 °.
4. outer rotor permanent magnet fixed structure according to claim 3, is characterized in that, the shape of described the second intercell connector is identical with the shape of described the first intercell connector.
5. outer rotor permanent magnet fixed structure according to claim 4, is characterized in that, a plurality of described the first draw-in grooves are distributed on described rotor core body inner side, and described in each, two sides and described second draw-in groove of permanent magnet conflicted.
6. outer rotor permanent magnet fixed structure according to claim 2, is characterized in that, the both ends of the surface of described rotor core body are also connected with respectively core body installing rack and annular compressing member, and described compressing member is all conflicted every magnetic stripe, rotor core body with described.
7. according to the outer rotor permanent magnet fixed structure described in claim 1 to 6 any one, it is characterized in that, describedly every magnetic stripe, by non-magnetic material, made.
8. outer rotor permanent magnet fixed structure according to claim 1, is characterized in that, silicon steel sheet or steel plate punched that described rotor core body has described the first draw-in groove by polylith form.
9. outer rotor permanent magnet fixed structure according to claim 1, is characterized in that, also comprises that rotating shaft, rotating shaft are arranged with stator outward, and described stator sleeve is located at described rotor core body toroidal magnet inner and that formed by permanent magnet described in polylith and is surrounded.
10. a permagnetic synchronous motor, is characterized in that, comprises the outer rotor permanent magnet fixed structure as described in claim 1 to 9 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420353319.8U CN204012986U (en) | 2014-06-26 | 2014-06-26 | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420353319.8U CN204012986U (en) | 2014-06-26 | 2014-06-26 | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor |
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| CN204012986U true CN204012986U (en) | 2014-12-10 |
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| CN201420353319.8U Expired - Lifetime CN204012986U (en) | 2014-06-26 | 2014-06-26 | A kind of outer rotor permanent magnet fixed structure and permagnetic synchronous motor |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300736A (en) * | 2016-09-14 | 2017-01-04 | 赵辉 | A kind of permanent magnet mounting structure of reel motor |
| CN109274239A (en) * | 2018-11-09 | 2019-01-25 | 广州博捷电机有限公司 | A kind of straight drive Rolling motor structure of conveyer belt |
| CN111313583A (en) * | 2019-12-24 | 2020-06-19 | 天津深之蓝海洋设备科技有限公司 | Permanent magnet rotor structure of underwater motor, underwater motor and underwater equipment |
| CN112865373A (en) * | 2019-11-26 | 2021-05-28 | 新疆金风科技股份有限公司 | Pressing strip, motor rotor and motor |
| CN114421664A (en) * | 2021-12-17 | 2022-04-29 | 浙江鸿音机电科技有限公司 | Motor rotor assembly |
-
2014
- 2014-06-26 CN CN201420353319.8U patent/CN204012986U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106300736A (en) * | 2016-09-14 | 2017-01-04 | 赵辉 | A kind of permanent magnet mounting structure of reel motor |
| CN109274239A (en) * | 2018-11-09 | 2019-01-25 | 广州博捷电机有限公司 | A kind of straight drive Rolling motor structure of conveyer belt |
| CN112865373A (en) * | 2019-11-26 | 2021-05-28 | 新疆金风科技股份有限公司 | Pressing strip, motor rotor and motor |
| CN111313583A (en) * | 2019-12-24 | 2020-06-19 | 天津深之蓝海洋设备科技有限公司 | Permanent magnet rotor structure of underwater motor, underwater motor and underwater equipment |
| CN114421664A (en) * | 2021-12-17 | 2022-04-29 | 浙江鸿音机电科技有限公司 | Motor rotor assembly |
| CN114421664B (en) * | 2021-12-17 | 2023-12-12 | 浙江聚得机电科技有限公司 | Motor rotor assembly |
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