CN209375280U - Built-in rotor and motor - Google Patents
Built-in rotor and motor Download PDFInfo
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- CN209375280U CN209375280U CN201920224378.8U CN201920224378U CN209375280U CN 209375280 U CN209375280 U CN 209375280U CN 201920224378 U CN201920224378 U CN 201920224378U CN 209375280 U CN209375280 U CN 209375280U
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Abstract
It includes rotor core that the utility model, which provides a kind of built-in rotor and motor, the built-in rotor, and the rotor core has multiple for installing the magnetic slots of permanent magnet, and each magnetic slot forms an independent magnetic pole piece；The periphery of the rotor core radial section forms the first curved section and the second curved section being staggered, and first curved section is uniformly distributed with second curved section along the circumferential direction of the radial section；Any second curved section includes two sections with the symmetrically arranged junction curve of the first symmetry axis, the radial symmetric overlapping of axles of first symmetry axis and the magnetic slot；The utility model optimizes rotor structure by the first curved section of setting and the second curved section, is conducive to reduce motor torque fluctuation, mentions high control precision, stability is high.
Description
Technical field
The utility model relates to power electronic equipment fields, more specifically to a kind of built-in rotor and motor.
Background technique
Motor is a kind of calutron that electric energy conversion or transmitting are realized according to battery induction law, and its main function is
By generating driving torque, work as power source drive electrical appliance or various mechanical equipments.Motor generally by stator, turn
Sub and other attachment compositions；Different types of motor, specific component part can be slightly different.
Magneto in motor is a kind of by the way that permanent magnet is arranged in rotor and generates rotating excitation field by permanent magnet excitation
Motor, the rotor of magneto is mainly made of rotor core, permanent magnet and shaft；And not with permanent magnetic material performance
The disconnected development improved with motor technology, magneto have obtained extremely being widely applied in the every field of national economy.And it is existing
Permanent magnet is fixed on rotor surface usually using the mode pasted in magneto, but built on the sand by the fixation of bonding method,
There is the risk for being thrown out of and being detached from rotor and demagnetization in permanent magnet, stability and reliability are insufficient.
In addition, existing magneto has part that permanent magnet is built in inside rotor core (outside rotor core radial section
Week is rounded), but there is the increase of rotor leakage amount in existing this interior permanent magnet machines；And due to existing magneto
Middle stationary part generally all offers the circumferential tooth socket for winding winding installation, when magneto no power, stator and rotor
Cooperation influenced by tooth socket there are torque ripple, and rotor leakage amount increases；Especially in magneto low-load operational process
In, the influence of torque ripple is more prominent, causes to vibrate and generate noise, the torque ripple of magneto is larger, to influence
The control precision of motor.
Utility model content
The utility model embodiment is pasted onto rotor upward stability and reliability deficiency and permanent magnetism for above-mentioned permanent magnet
The problem of big torque ripple inside rotor core, influence control precision and rotor leakage amount increase is set in vivo, is provided a kind of new
Built-in rotor and motor.
The technical solution that the utility model embodiment solves above-mentioned technical problem is to provide a kind of built-in rotor, including
Rotor core, the rotor core have multiple magnetic slots for being used to install permanent magnet, and multiple magnetic slots are along the rotor
The shaft of iron core is circumferentially uniformly distributed, and each magnetic slot forms an independent magnetic pole piece；The rotor core is radial
The periphery in section forms the first curved section and the second curved section being staggered, and first curved section and second curve
Section is uniformly distributed along the circumferential direction of the radial section；Any second curved section is included two sections and is symmetrical arranged with the first symmetry axis
Junction curve, the radial symmetric overlapping of axles of first symmetry axis and the magnetic slot；Any first curved section difference
To the center curvature of the radial section, and second curved section and the first symmetry axis intersection point are to the radial section
The distance at center is less than the distance at center of any point to the radial section on first curved section.
Preferably, there is third curved section, the third between any first curved section and second curved section
Every bit is to the distance at the center of the radial section less than any point on first curved section to the radial direction on curved section
The distance at the center in section.
Preferably, symmetrically arranged two sections of junction curves are connected directly or by least one line in second curved section
Duan Xianglian；And first curved section is made of the first circular arc, it is radial that the center of circle of first circular arc is located at the rotor core
Two sections of junction curves at the center in section, second curved section are made of the second circular arc respectively, and second circular arc is taken up an official post
A little the extremely distance at the radial section center is less than or equal to any point on first circular arc to the radial section center
Distance.
Preferably, the first intersection point of the radial symmetry axis of the magnetic slot and second curved section, with the magnetic slot
Radial symmetry axis and second curved section two endpoints line the second intersection point between vertical range be 0.02~
0.20mm。
Preferably, across the radius of the second curved section endpoint and the corresponding magnetic pole piece on the radial section
Angle between the radial symmetry axis of magnetic slot is 8~16 °.
Preferably, spacing of the magnetic slot between the side and second curved section of the rotor core outer rim
Uniformly, and iron core belonging to the spacing forms magnetic bridge.
Preferably, the side of the magnetic slot is made of first section, interlude and the endpiece successively to connect, and the interlude
It intersects vertically with the radial symmetry axis of the magnetic slot, the first section and endpiece are tilted to second curved section respectively, and institute
The angle for stating first section and endpiece and the interlude is respectively 80~85 °.
Preferably, two sections of junction curves of second curved section are respectively provided with a concave preparation vessel；The magnetic slot
The both ends of side be respectively provided with protrusion corresponding with the concave preparation vessel.
Preferably, the both ends of the side of the magnetic slot are respectively provided with extension.
The utility model embodiment also provides a kind of motor, including as above described in any item built-in rotors.
The built-in rotor and motor of the utility model embodiment have the advantages that by the way that the first curved section is arranged
With the second curved section, optimize rotor structure, is conducive to reduce motor torque fluctuation, mentions high control precision, stability is high.And lead to
The spacing crossed between the side and second curved section of setting magnetic slot is uniform, forms magnetic bridge, can effectively reduce rotor leakage
The quantity of magnetism, improves the utilization rate of permanent magnet, and practicability is high.
Detailed description of the invention
Fig. 1 is the structural schematic diagram for the built-in rotor that the utility model first embodiment provides；
Fig. 2 is the structural schematic diagram for the built-in rotor partial enlargement that the utility model second embodiment provides；
Fig. 3 is the structural schematic diagram for the built-in rotor partial enlargement that the utility model 3rd embodiment provides；
Fig. 4 is the structural schematic diagram for the built-in rotor partial enlargement that the utility model first embodiment provides；
Fig. 5 is the partial schematic diagram of built-in rotor provided by the embodiment of the utility model；
Fig. 6 is the structural schematic diagram for the built-in rotor partial enlargement that the utility model fourth embodiment provides.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
As shown in Figure 1, being the structural schematic diagram of built-in rotor provided by the embodiment of the utility model, the built-in rotor
It can be applied in power electronic equipment field, especially magneto.Built-in rotor in the present embodiment includes rotor core
1, rotor core 1 has multiple magnetic slots 11 for installing permanent magnet, and (rotor core 1 may include multiple silicon steel being overlapped mutually
Piece is equipped with magnetic slot on each silicon steel sheet, and multiple magnetic slots for being stacked silicon steel sheet together are overlapped setting), multiple magnet steel
Slot 11 is circumferentially uniformly distributed along the shaft of rotor core 1, and each magnetic slot 11 forms an independent magnetic pole piece；Also,
The periphery of the radial section of rotor core 1 forms the first curved section 12 and the second curved section 13 being staggered, first curve
Section 12 and the second curved section 13 are uniformly distributed (the first curved section 12 and the second curved section along the circumferential direction of 1 radial section of rotor core
13 interval connections)；The second curved section of any bar 13 includes two sections with the symmetrically arranged junction curve 131 of the first symmetry axis, described
First symmetry axis is overlapped with the radial symmetry axis (the pole center line that the radial symmetry axis is magnetic slot 11) of magnetic slot 11；This
Outside, all at least one concave preparation vessel 132, (each junction curve 131 of the present embodiment has one to each junction curve 131
A concave preparation vessel 132), in practice, the quantity of concave preparation vessel 132 can be according to reduction on each junction curve 131
The effect of actual torque fluctuation determines)；The first curved section of any bar 12 is curved to the center of 1 radial section of rotor core respectively
Song, and the second curved section 13 at a distance from the intersection point to the center of 1 radial section of rotor core of first symmetry axis less than
On one curved section 12 any point to the center of 1 radial section of rotor core distance.
As shown in connection with fig. 2, above-mentioned built-in rotor is circumferential uniformly by the first curved section 12 of setting and the second curved section 13
Distribution, reducing motor stator tooth socket bring influences, and two sections of symmetrical junction curves are equipped on the second curved section 13
131, and two sections of junction curves 131 be connected directly or by least one line segment 31 be connected (i.e. the second curved section 13 can be by two sections
Junction curve 131 is directly connected to constitute, or by the multistage line segment of two sections of junction curves 131 of two sections of junction curves 131 and connection
31 are constituted), rotor exterior contour structure can be optimized, effectively reduce motor torque fluctuation, so that the control precision of motor is improved,
Stability is high.
As shown in connection with fig. 3, in practice, have the 4th between any bar the first curved section 12 and the second curved section 13
Curved section 14 (the 4th curved section 14 can for irregular curve, smooth arc and straight line etc.), it is each on the 4th curved section 14
The distance to the center of 1 radial section of rotor core is put less than any point on the first curved section 12 to 1 radial section of rotor core
Center distance.Certainly, the curve that may also set up multistage between the first curved section of each 12 and the second curved section 13 different
Section can be configured according to the practical effect for reducing torque ripple and structure design.
Specifically, (i.e. magnetic slot 11 is radially close to rotor iron close to the side of the rotor core outer rim for magnetic slot 11
The side at 1 radial section edge of core) and the second curved section 13 between spacing it is uniform, and the spacing formed magnetic bridge 15, every magnetic
Bridge 15 can effectively reduce rotor leakage amount, improve the utilization rate of permanent magnet.
Particularly, (i.e. magnetic slot 11 is radially close to the side at 1 radial section edge of rotor core for the side of magnetic slot 11
Side) both ends be respectively equipped with protrusion 111 corresponding with spill preparation vessel 132, bonded adhesives (such as AB can be filled in protrusion 111
Glue, casting glue), it is beneficial to prevent permanent magnet play in magnetic slot 11 and is subjected to displacement, improve stability, it is practical.And
By the way that protrusion 111 corresponding with spill preparation vessel 132 is arranged, it is ensured that between the side of magnetic slot 11 and the second curved section 13
Spacing is uniform, optimizes the leakproof magnetic property of rotor structure, further increases the utilization rate of permanent magnet.
In addition, the first curved section 12 is made of the first circular arc, and the center of circle of the first circular arc is located at 1 radial section of rotor core
Center；Two sections of junction curves 131 of the second curved section 13 are made of the second circular arc, and on the second circular arc any point to rotor iron
The distance at the radial section center of core 1 is less than or equal to any point on the first circular arc to the radial section center of rotor core 1
Distance.So that the second curved section 13 is taken up an official post will not be more than with any point on the first curved section 12 to 1 radial section of rotor core
The distance at center is except the border circular areas that radius is constituted；Certainly, in practice, the first circular arc and the second circular arc can be for not
Smooth arc line can determine the smoothness of circular arc line according to the motor torque ripple effect of reduction.
As shown in connection with fig. 4, the first intersection point of the radial symmetry axis of magnetic slot 11 and the second curved section 13, with magnetic slot 11
Vertical range t between second intersection point of the line of two endpoints of radial symmetry axis and the second curved section 13 is 0.02~
0.20mm；And across the radius of the endpoint of the second curved section 13 and the magnet steel of corresponding magnetic pole piece on 1 radial section of rotor core
Angle α between the radial symmetry axis of slot 11 is 8~16 °；1 radial section exterior contour structure of rotor core is defined,
Optimizing structure design, make it is simple and reasonable, reduce motor stator tooth socket on torque ripple bring influence.
As shown in connection with fig. 5, (i.e. magnetic slot 11 is radially close to 1 radial section edge of rotor core for the side of magnetic slot 11
Side) be made of first section, interlude and the endpiece successively to connect, and interlude phase vertical with the radial symmetry axis of magnetic slot 11
It hands over, first section and endpiece are tilted to the second curved section 13 respectively, and the angle β of first section and endpiece and interlude is respectively 80~85 °,
It can guarantee that the spacing between the side and the second curved section 13 of magnetic slot 11 is uniform.
As shown in fig. 6, being the structural schematic diagram for the built-in rotor that the utility model fourth embodiment provides, in practical fortune
In, when motor torque fluctuation is smaller, the second curved section 13 can be not provided with the preparation vessel of spill, correspondingly, magnetic slot 21
The both ends of side (i.e. magnetic slot 21 is radially close to the side at 2 radial section edge of rotor core) may be configured as extension 211；
Make to be spaced uniformly between the edge of 2 radial section of side and rotor core of magnetic slot 21 by extension 211, improves rotor
Magnetic-leakage preventing effect；And permanent magnet in magnetic slot 21 is fixed by filling bonded adhesives in extension 211, improve permanent magnet
Stability, and guarantee do not influence stability while, simplify structure design.
In addition, the utility model embodiment also provides a kind of motor, including above-mentioned built-in rotor, through this embodiment
The built-in rotor of offer can reduce motor torque fluctuation, motor is made to reach high-precision.
The preferable specific embodiment of the above, only the utility model, but the protection scope of the utility model is not
It is confined to this, anyone skilled in the art within the technical scope disclosed by the utility model, can readily occur in
Change or replacement, should be covered within the scope of the utility model.Therefore, the protection scope of the utility model should
It is subject to the protection scope in claims.
Claims (10)
1. a kind of built-in rotor, including rotor core, the rotor core has multiple magnetic slots for being used to install permanent magnet,
Multiple magnetic slots are circumferentially uniformly distributed along the shaft of the rotor core, and each magnetic slot formed one it is independent
Magnetic pole piece；It is characterized in that, the periphery of the rotor core radial section forms the first curved section being staggered and the second song
Line segment, and first curved section is uniformly distributed with second curved section along the circumferential direction of the radial section；Any described
Two curved sections include two sections with the symmetrically arranged junction curve of the first symmetry axis, the diameter of first symmetry axis and the magnetic slot
To symmetrical overlapping of axles；Any first curved section is respectively to the center curvature of the radial section, and second curved section
Be less than on first curved section any point at a distance from the first symmetry axis intersection point to the center of the radial section to institute
State the distance at the center of radial section.
2. built-in rotor according to claim 1, which is characterized in that any first curved section and second song
There is third curved section, the distance at center of the every bit to the radial section is less than institute on the third curved section between line segment
Any point is stated on the first curved section to the distance at the center of the radial section.
3. built-in rotor according to claim 1, which is characterized in that symmetrically arranged two sections in second curved section
Junction curve is connected directly or is connected by least one line segment；And first curved section is made of the first circular arc, described
The center of circle of one circular arc is located at the center of the rotor core radial section, two sections of junction curves of second curved section respectively by
Second circular arc is constituted, and the distance at any point to the radial section center is less than or equal to described first on second circular arc
On circular arc any point to the radial section center distance.
4. built-in rotor according to claim 1, which is characterized in that the radial symmetry axis of the magnetic slot and described
First intersection point of two curved sections, with the line of two endpoints of the radial symmetry axis and second curved section of the magnetic slot
Vertical range between second intersection point is 0.02~0.20mm.
5. built-in rotor according to claim 1, which is characterized in that pass through second curve on the radial section
Angle between the radius of Duan Duandian and the radial symmetry axis of the magnetic slot of the corresponding magnetic pole piece is 8~16 °.
6. built-in rotor according to claim 1, which is characterized in that the magnetic slot is close to the rotor core outer rim
Side and second curved section between spacing it is uniform, and iron core belonging to the spacing formed magnetic bridge.
7. built-in rotor according to claim 6, which is characterized in that the side of the magnetic slot is by the head that successively connects
Section, interlude and endpiece are constituted, and the radial symmetry axis of the interlude and the magnetic slot intersects vertically, the first section and tail
Section is tilted to second curved section respectively, and the angle of the first section and endpiece and the interlude is respectively 80~85 °.
8. built-in rotor according to claim 6, which is characterized in that two sections of junction curves of second curved section point
It Ju You not a concave preparation vessel；The both ends of the side of the magnetic slot are respectively provided with corresponding convex with the concave preparation vessel
Portion.
9. built-in rotor according to claim 6, which is characterized in that the both ends of the side of the magnetic slot are respectively provided with
Extension.
10. a kind of motor, which is characterized in that including built-in rotor as claimed in any one of claims 1-9 wherein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224378.8U CN209375280U (en) | 2019-02-22 | 2019-02-22 | Built-in rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920224378.8U CN209375280U (en) | 2019-02-22 | 2019-02-22 | Built-in rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209375280U true CN209375280U (en) | 2019-09-10 |
Family
ID=67827340
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920224378.8U Active CN209375280U (en) | 2019-02-22 | 2019-02-22 | Built-in rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209375280U (en) |
-
2019
- 2019-02-22 CN CN201920224378.8U patent/CN209375280U/en active Active
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