CN110784034A - Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure - Google Patents
Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure Download PDFInfo
- Publication number
- CN110784034A CN110784034A CN201911272946.2A CN201911272946A CN110784034A CN 110784034 A CN110784034 A CN 110784034A CN 201911272946 A CN201911272946 A CN 201911272946A CN 110784034 A CN110784034 A CN 110784034A
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- Prior art keywords
- magnetic steel
- buckle
- elastic body
- side part
- bayonet
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 67
- 239000010959 steel Substances 0.000 title claims abstract description 67
- 230000001360 synchronised effect Effects 0.000 title claims abstract description 16
- 239000000758 substrate Substances 0.000 claims abstract description 24
- 238000002955 isolation Methods 0.000 claims abstract description 17
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 230000005389 magnetism Effects 0.000 abstract description 5
- 239000011230 binding agent Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000005457 optimization Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229920000049 Carbon (fiber) Polymers 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 239000004917 carbon fiber Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000010408 sweeping Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/28—Means for mounting or fastening rotating magnetic parts on to, or to, the rotor structures
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The invention discloses a permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure.A plurality of magnetism isolating buckle pairs are arranged on the circumference of a rotor substrate, each magnetism isolating buckle pair comprises a left buckle and a right buckle, each buckle comprises a radial elastic body, the lower part of each elastic body is positioned in a notch on the rotor substrate, and the middle parts of the left elastic body and the right elastic body are provided with clamping heads; the left side part and the right side part of the magnetic steel are provided with bayonets; the magnetic steel is clamped between the left buckle and the right buckle corresponding to the magnetic isolation buckle pair through the clamping of the bayonet and the clamping head, gaps which can be filled with the binding agent are reserved between the lower arc part of the magnetic steel and the rotor substrate and between the left side part and the right side part of the magnetic steel below the left bayonet and the right bayonet and between the left elastic body and the right elastic body, and intervals for assembling tool operation are reserved between the left side part and the right side part of the magnetic steel above the left bayonet and the right bayonet and between the upper parts of the left elastic body and the right. The invention realizes the reliable fixation of the magnetic steel, effectively reduces vibration and noise, improves the air gap magnetic field, fully contributes to the performance of the magnetic steel and has high moment density of the whole structure.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a surface-mounted rotor magnetic steel fixing structure of a permanent magnet synchronous motor.
Background
The permanent magnet synchronous motor has the advantages of simple structure, light weight, small volume, large output torque, stable operation, high efficiency, energy conservation and the like, thereby being widely applied to various fields.
In the prior art, a permanent magnet synchronous motor is divided into a surface-mounted type and an embedded type according to different mounting and fixing modes of rotor magnetic steel.
The surface-mounted permanent magnet synchronous motor comprises a protruding type and an inserting type. The air gap flux density of the motor with the convex structure tends to be sine wave, and the performance is excellent; the motor with the plug-in structure improves the torque density of the motor due to the salient pole effect, and is more beneficial to weak magnetic control.
The conventional surface-mounted motor manufacturing process comprises the following steps: the method comprises the following steps of fixing by screws, binding and fixing non-woven tapes (carbon fibers), bonding and fixing by adhesives, sleeving and fixing rotor magnetic steel sleeves, fixing interelectrode pressing strips, fixing rotor end plates, fixing rotor punching sheet clamping grooves and the like.
Due to the limitations of design and manufacturing process, the surface-mounted process has the problems of high manufacturing cost, high part precision requirement, low production efficiency, unreliability (magnetic steel falling off, chamber sweeping) and the like.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to solve the technical problem of providing a permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure which is reliable in magnetic steel installation, high in torque density, good in weak magnetic performance and good in back electromotive force waveform.
Can solve above-mentioned technical problem's permanent magnet synchronous machine table pastes formula rotor magnet steel fixed knot and constructs, its technical scheme includes rotor substrate and magnet steel, and the institute is different:
1. the rotor substrate is characterized in that a plurality of magnetic isolation buckle pairs are uniformly distributed on the circumference of the rotor substrate and comprise a left buckle and a right buckle, each buckle comprises a radial elastic body, the lower part of each elastic body is positioned in a notch correspondingly formed in the rotor substrate, and the middle parts of the left elastic body and the right elastic body are provided with clamping heads which are convex in opposite directions.
2. The magnet steel comprises an upper arc part, a lower arc part, a left side part and a right side part, wherein the left side part and the right side part are respectively provided with an inwards concave bayonet, and the positions of the left bayonet and the right bayonet correspond to the positions of the left chuck and the right chuck and are matched in shape.
3. Each magnetic steel is clamped between the left buckle and the right buckle corresponding to the magnetic isolation buckle pair through the clamping of the bayonet and the clamping head, gaps which can be filled with a binder are reserved between the lower arc part of the magnetic steel and the rotor substrate and between the left side part and the right side part of the magnetic steel below the left bayonet and the right bayonet and between the left elastic body and the right elastic body, and intervals for assembling tool operation are reserved between the left side part and the right side part of the magnetic steel above the left bayonet and the right bayonet and between the upper parts of the left elastic body and the right elastic body.
In order to simplify the structure of the rotor substrate and facilitate the processing, the elastic bodies of the adjacent buckles between every two magnetic isolation buckle pairs can be arranged in the same notch.
In an optimization scheme, the width and the depth of the single-side groove of each two elastic bodies back to back are the same, the width of the same-side groove between each two elastic bodies is larger than that of the single-side groove, and the depth of the same-side groove between each two elastic bodies is the same as that of the single-side groove.
In another optimization scheme, the width and the depth of the single-side grooves of every two elastic bodies in a back-to-back mode are the same, the width of the groove on the same side between every two elastic bodies is equal to the width of the single-side groove, and the depth of the groove on the same side between every two elastic bodies is larger than the depth of the single-side groove.
The elastic coefficient can be adjusted by changing the shape of the elastic body only by the two different optimization schemes.
Conventionally, left and right buckle symmetry sets up, the same radian design of circumference of magnet steel upper and lower arc portion and rotor substrate, the left and right side portion symmetry setting of magnet steel.
The invention has the beneficial effects that:
1. according to the surface-mounted rotor magnetic steel fixing structure of the permanent magnet synchronous motor, the compression-resistant and non-tensile characteristics of the magnetic steel are utilized, the upper parts of the left and right buckle elastic bodies of the magnetic isolation buckle pair are unfolded through the corresponding assembly tool to generate elastic deformation, so that the magnetic steel can be smoothly pushed into the space between the magnetic isolation buckle pair, the tool is taken out, the left and right buckle elastic bodies rebound, the clamping heads of the magnetic isolation buckle pair are tightly attached to the notches corresponding to the magnetic steel to form clamping force, the reliable fixing of the magnetic steel in the tangential direction and the radial direction is ensured, and the magnetic steel is prevented from falling.
2. In the structure of the invention, the gap between the lower arc part of the magnetic steel and the rotor substrate is filled with the adhesive to fix the magnetic steel more firmly, and the vibration and the noise are effectively reduced.
3. In the structure of the invention, the air gap magnetic field waveform can be improved and the performance of the magnetic steel can be fully utilized by adjusting the shapes and the sizes of the magnetic steel and the buckle, and the torque density of the whole structure is high.
4. By using the invention, under the condition of the same characteristics, the size and the weight of the motor are greatly reduced, the use of materials is reduced, and the cost is saved.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention.
Fig. 2 is a schematic structural view of the magnetic isolation snap pair in the embodiment of fig. 1.
Fig. 3 is a partially enlarged view of a portion a in fig. 2.
Fig. 4 is a schematic structural diagram of magnetic steel in the embodiment of fig. 1.
Fig. 5 is another schematic structural diagram of the magnetic isolation snap pair in the embodiment of fig. 1.
And (3) identifying the figure number: 1. a rotor substrate; 2. magnetic steel; 2-1, bayonet; 3. buckling; 3-1, clamping a head; 4. a recess; 4-1, a single-side groove; 4-2, grooves on the same side; 5. the magnetism isolating buckle pair.
Detailed Description
The technical solution of the present invention will be further explained with reference to the embodiments shown in the drawings.
The invention relates to a surface-mounted rotor magnetic steel fixing structure of a permanent magnet synchronous motor, which comprises a rotor substrate 1 and magnetic steel 2, wherein the rotor substrate 1 is a stamped plate, a plurality of (10) magnetism isolating buckle pairs 5 are uniformly distributed on the circumference of the rotor substrate 1, and each magnetism isolating buckle pair 5 comprises a left buckle 3 and a right buckle 3 which are symmetrical; a plurality of (10) magnetic steels 2 are respectively arranged correspondingly to the magnetic isolation buckle pairs 5 and are fixedly embedded between the left buckle 3 and the right buckle 3, as shown in fig. 1 and 2.
The left and right buckles 3 of each magnetic isolation buckle pair 5 comprise a radial left and right elastic body, the lower parts of the left and right elastic body are positioned in a left and right notch 4 correspondingly punched on the rotor substrate 1, and the middle parts of the left and right elastic body are provided with clamping heads 3-1 which protrude oppositely and are symmetrical left and right; the elastic bodies of the adjacent buckles 3 between every two pairs of magnetic isolation buckles 5 are all positioned in the same notch 4 (divided into a single-side groove 4-1 and a same-side groove 4-2), the width and the depth of the single-side groove 4-1 with the back of every two elastic bodies are the same, the width of the same-side groove 4-2 between every two elastic bodies is equal to 2 times of the width of the single-side groove 4-1, the depth of the same-side groove 4-2 between every two elastic bodies is the same as the depth of the single-side groove 4-1, as shown in figure 3, or the width and the depth of the single-side groove 4-1 of each two elastic bodies which are opposite to each other are the same, the width of the groove 4-2 at the same side between each two elastic bodies is equal to the width of the groove 4-1 at the single side, and the depth of the groove 4-2 at the same side between each two elastic bodies is larger than the depth of the groove 4-1 at the single side, as shown in fig. 5.
Each magnetic steel 2 comprises a left symmetrical body and a right symmetrical body which take the symmetrical center lines of the corresponding left bayonet catch 3 and the right bayonet catch 3 as the center, the upper part and the lower part of each magnetic steel 2 are arc parts with the same radian as the circumference of the rotor substrate 1, the left side part and the right side part of each magnetic steel 2 are respectively provided with a concave bayonet catch 2-1 which is symmetrical left and right, the positions of the left bayonet catch 2-1 and the right bayonet catch 2-1 correspond to the positions of the left clamping head 3-1 and are matched in shape, and the arc width of the magnetic steel 2 above the left bayonet catch 2-1 and the arc width of the magnetic steel 2 below the right bayonet catch 2-1 are smaller than that of the.
Each magnetic steel 2 is clamped between the left and right buckles 3 of the corresponding magnetic isolation buckle pair 5 through the clamping of the left and right bayonets 2-1 and the left and right chucks 3-1, equal gaps are reserved between the lower arc part of the magnetic steel 2 and the circumference of the rotor substrate 1 and between the left and right side parts (large arc width) of the magnetic steel 2 below the left and right bayonets 2-1 and the left and right elastic bodies, equal intervals of assembly tooling operation are reserved between the left and right side parts (small arc width) of the magnetic steel 2 above the left and right bayonets 2-1 and the upper parts of the left and right elastic bodies, for the convenience of the assembly tooling operation, the upper parts of the left and right elastic bodies can be properly inclined by a small angle to form a hook head, and the assembly tooling operation (the left and right buckles 3 are outwards opened so that the magnetic steel 2 is placed therein) can be prevented from slipping, as shown in fig. 2 and fig..
For further fastening the magnetic steel 2 between the left and right buckles 3, the bonding agent is filled in the equal gaps between the lower arc part of the magnetic steel 2 and the circumference of the rotor substrate 1 and between the left and right side parts (large arc width) of the magnetic steel 2 below the left and right bayonets 2-1 and the left and right elastomers, so that the vibration and noise of the whole structure are effectively reduced, the air gap magnetic field is improved, the performance of the magnetic steel is fully facilitated, and the moment density of the whole structure is high.
The above embodiments are only specific examples for further detailed description of the objects, technical solutions and advantages of the present invention, and the present invention is not limited thereto, and any modifications, equivalents and improvements made within the scope of the present invention are included in the scope of the present invention.
Claims (5)
1. Permanent magnet synchronous machine table pastes formula rotor magnet steel fixed knot and constructs, including rotor substrate (1) and magnet steel (2), its characterized in that:
a plurality of magnetic isolation buckle pairs (5) are uniformly distributed on the circumference of the rotor substrate (1), each magnetic isolation buckle pair (5) comprises a left buckle (3) and a right buckle (3), each buckle (3) comprises a radial elastic body, the lower part of each elastic body is positioned in a notch (4) correspondingly formed in the rotor substrate (1), and clamping heads (3-1) protruding in opposite directions are arranged in the middle parts of the left elastic body and the right elastic body;
the magnetic steel (2) comprises an upper arc part, a lower arc part, a left side part and a right side part, wherein the left side part and the right side part are respectively provided with an inwards concave bayonet (2-1), and the positions of the left bayonet (2-1) and the right bayonet (2-1) correspond to the positions of the left chuck (3-1) and the right chuck (3-1) and are matched in shape;
each magnetic steel (2) is clamped between the left buckle (3) and the right buckle (3) of the corresponding magnetic isolation buckle pair (5) through the clamping of the bayonet (2-1) and the clamping head (3-1), gaps which can be filled with adhesives are reserved between the lower arc part of the magnetic steel (2) and the rotor substrate (1) and between the left side part and the right side part of the magnetic steel (2) below the left bayonet (2-1) and the left elastic body and the right elastic body, and intervals for assembling tool operation are reserved between the left side part and the right side part of the magnetic steel (2) above the left bayonet (2-1) and the upper part of the left elastic body and the right elastic body.
2. The permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure of claim 1, characterized in that: the elastic bodies of the adjacent buckles (3) between every two pairs of magnetic isolation buckles (5) are positioned in the same notch (4).
3. The permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure of claim 2, characterized in that: the width and the depth of the single-side groove (4-1) with the back of each two elastic bodies are the same, the width of the groove (4-2) on the same side between each two elastic bodies is larger than the width of the groove (4-1) on the single side, and the depth of the groove (4-2) on the same side between each two elastic bodies is the same as the depth of the groove (4-1) on the single side.
4. The permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure of claim 2, characterized in that: the width and the depth of the single-side groove (4-1) with the back of each two elastic bodies are the same, the width of the groove (4-2) on the same side between each two elastic bodies is equal to the width of the groove (4-1) on the single side, and the depth of the groove (4-2) on the same side between each two elastic bodies is larger than the depth of the groove (4-1) on the single side.
5. The permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure according to any one of claims 1 to 4, characterized in that: the left buckle and the right buckle (3) are symmetrically arranged, the upper arc part and the lower arc part of the magnetic steel (2) and the circumference of the rotor substrate (1) are arranged at the same radian, and the left side part and the right side part of the magnetic steel (2) are symmetrically arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911272946.2A CN110784034A (en) | 2019-12-12 | 2019-12-12 | Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911272946.2A CN110784034A (en) | 2019-12-12 | 2019-12-12 | Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure |
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| Publication Number | Publication Date |
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| CN110784034A true CN110784034A (en) | 2020-02-11 |
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| CN201911272946.2A Pending CN110784034A (en) | 2019-12-12 | 2019-12-12 | Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492637A (en) * | 2019-08-28 | 2019-11-22 | 山西北方机械控股有限公司 | A kind of magnet steel fixing means and iron core magnetic steel structure |
| CN111884371A (en) * | 2020-07-21 | 2020-11-03 | 江苏汇智高端工程机械创新中心有限公司 | Permanent magnet motor rotor and permanent magnet motor |
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| US20090015091A1 (en) * | 2007-07-13 | 2009-01-15 | System General Corporation | Rotating shaft and motor rotor having the same |
| JP2009072015A (en) * | 2007-09-14 | 2009-04-02 | Yaskawa Electric Corp | Rotor, its manufacturing method and electric motor |
| CN104426268A (en) * | 2013-09-03 | 2015-03-18 | 爱信精机株式会社 | Electric motor |
| CN107332378A (en) * | 2017-08-25 | 2017-11-07 | 苏州德迈科电机技术有限公司 | Permanent magnet synchronous servo motor rotor magnetic steel Surface Mount fixed structure |
| CN110535265A (en) * | 2018-05-23 | 2019-12-03 | 德昌电机(深圳)有限公司 | Rotor |
| CN210669664U (en) * | 2019-12-12 | 2020-06-02 | 桂林星辰科技股份有限公司 | Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure |
-
2019
- 2019-12-12 CN CN201911272946.2A patent/CN110784034A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090015091A1 (en) * | 2007-07-13 | 2009-01-15 | System General Corporation | Rotating shaft and motor rotor having the same |
| JP2009072015A (en) * | 2007-09-14 | 2009-04-02 | Yaskawa Electric Corp | Rotor, its manufacturing method and electric motor |
| CN104426268A (en) * | 2013-09-03 | 2015-03-18 | 爱信精机株式会社 | Electric motor |
| CN107332378A (en) * | 2017-08-25 | 2017-11-07 | 苏州德迈科电机技术有限公司 | Permanent magnet synchronous servo motor rotor magnetic steel Surface Mount fixed structure |
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| CN210669664U (en) * | 2019-12-12 | 2020-06-02 | 桂林星辰科技股份有限公司 | Permanent magnet synchronous motor surface-mounted rotor magnetic steel fixing structure |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110492637A (en) * | 2019-08-28 | 2019-11-22 | 山西北方机械控股有限公司 | A kind of magnet steel fixing means and iron core magnetic steel structure |
| CN111884371A (en) * | 2020-07-21 | 2020-11-03 | 江苏汇智高端工程机械创新中心有限公司 | Permanent magnet motor rotor and permanent magnet motor |
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