CN206575235U - Stator core structure, stator with same and motor - Google Patents
Stator core structure, stator with same and motor Download PDFInfo
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- CN206575235U CN206575235U CN201621169520.6U CN201621169520U CN206575235U CN 206575235 U CN206575235 U CN 206575235U CN 201621169520 U CN201621169520 U CN 201621169520U CN 206575235 U CN206575235 U CN 206575235U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 25
- 238000010276 construction Methods 0.000 claims description 45
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 230000008859 change Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000004146 energy storage Methods 0.000 description 1
- 230000016507 interphase Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
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Abstract
The utility model provides a stator core structure, stator and motor that have it, wherein the stator core structure includes a plurality of end-to-end connection and forms the iron core unit of annular structure, each iron core unit all has outer ring edge, tooth boots and connects the tooth yoke of the two, all tooth boots distribute on the same circumference, and enclose and form the annular inner chamber; any two adjacent tooth shoes are not contacted with each other and form a notch; two adjacent notches are different in width, and the two notches spaced by one notch are the same in width. The utility model discloses a stator core structure can show and reduce tooth's socket torque, reduces motor vibration and noise, increases substantially the system control precision.
Description
Technical field
The utility model is related to motor stator structure technical field, and in particular to a kind of stator core construction, with it
Stator and motor.
Background technology
With the continuous lifting of permanent magnetic material performance, permanent-magnet brushless DC electric machine is applied to high performance more and more widely
Speed and position control system.Permanent-magnet brushless DC electric machine generally comprises the stator core to form inner chamber, and can be rotatable
Ground, which is arranged on to be wound with winding, rotor outer wall on the rotor of the inner cavity, stator core, is installed with permanent magnet.
In the prior art chain type stator core structure as shown in Fig. 2 include several interconnect iron core unit 01,
Each iron core unit 01 is respectively provided with outer annular edge 02, tooth boots 03 and tooth yoke 04 connecting the two, two adjacent outer annular edges 02
Between connect from beginning to end.Using when, two iron core units 01 positioned at head and the tail position are connected, formed annular stator core construction
(as shown in Figure 1).Notch 05 is formed between this stator core construction of the prior art, two neighboring tooth boots 03, is owned
The width of notch 05 is identical, and boots 03 with teeth width it is also identical.
Chain type stator core construction in above-mentioned technical proposal has following technological deficiency：Because permanent magnet is in rotor outer wall
On be generally fitted with polylith, and adjacent two pieces of permanent magnets pole orientation on the contrary, when there is relative motion in rotor, in forever
Magnetic conductance between the tooth boots and permanent magnet of magnet pole arc portion point is basically unchanged, namely the magnetic field around tooth boots is basically unchanged, Bu Huiyin
The change of magnetizing field energy storage；And position between two adjacent permanent magnets it is corresponding be made up of one or two tooth boots one
In segment region, magnetic conductance changes greatly, namely changes of magnetic field is big in a bit of region that one or two tooth boots is constituted, can
Cause the change of magnetic field energy, so as to produce cogging torque.Cogging torque is that the interphase interaction of permanent magnet and stator core is produced
Raw torque, is caused by the tangential component of Interaction Force as permanent magnet Yu stator iron core tooth, so as to cause torque ripple
It is dynamic, cause vibrations and noise, influence the control accuracy of system.This chain type stator core construction of the prior art, Cheng Yuanhou
Width of rebate is consistent, as shown in figure 1, this kind of structure can make it that motor cogging torque is larger, causes motor oscillating big, noise
Height, and the control accuracy of system is relatively low, it is difficult to it is applied to high performance speed and position control system.Reducing cogging torque is
The key issue that high-performance permanent magnet brshless DC motor must be solved and considered in manufacturing and designing.
Utility model content
Therefore, the technical problems to be solved in the utility model is to overcome chain type stator core construction of the prior art to exist
Using when cogging torque it is big, cause the technological deficiency that motor oscillating is big, noise is high and system control accuracy is low, so as to provide one kind
Cogging torque is small, thus motor oscillating is small, noise is low and the high stator core construction of system control accuracy.
The utility model also provides a kind of stator with said stator core structure.
The utility model also provides a kind of motor with said stator.
Therefore, the utility model provides a kind of stator core construction, including several connect and form loop configuration from beginning to end
Iron core unit, each described iron core unit is respectively provided with outer annular edge, tooth boots and connects the outer annular edge and the tooth boots
Tooth yoke, all tooth yokes are distributed on same circumference and enclose to form annular cavity；Two teeth of arbitrary neighborhood
It is not in contact with each other between boots, and forms notch；Two adjacent notches have different width；One, the interval notch
Two notches have identical width.
As a kind of preferred scheme, in two notches of arbitrary neighborhood, the two ends of a notch and the ring
Shape lumen centers line formation radian a, the two ends of another notch and the line of centres formation radian of the annular cavity
B, the radian a are 2-4 times of the radian b.
As a kind of preferred scheme, the radian a is 3 times of the radian b.
As a kind of preferred scheme, the tooth boots have close to the first tooth boots end compared with wide notch, and close to narrower slot mouthful
The second tooth boots end, there is radian c, the second tooth boots end and the tooth between the first tooth boots end and the tooth yoke center line
It is 1-4 times of the radian c to have radian d, the radian d between yoke center line.
As a kind of preferred scheme, the radian d is 3 times of the radian c.
As a kind of preferred scheme, the iron core unit after punch forming, encloses to form institute on vertical bar stator core chain
State loop configuration.
The utility model also provides a kind of stator, including several are superimposed the stator core knot being fixed together vertically
Structure, the stator core construction is the stator core construction described in any of the above-described.
As a kind of preferred scheme, the outer annular edge is provided with the first mounting hole, and several described stator core constructions are folded
Plus after, fixed using rivet through first mounting hole；
And/or, the tooth yoke is provided with the second mounting hole, after several described stator core construction superpositions, uses rivet
Fixed through second mounting hole.
The utility model also provides a kind of motor, with the stator core construction described in as above any one.
The utility model also provides a kind of motor, with the stator described in as above any one.
The technical scheme that the utility model is provided, with advantages below：
1. be not in contact with each other between stator core construction of the present utility model, two tooth boots of arbitrary neighborhood, and form notch,
Two adjacent width of rebate differences, two width of rebate for being spaced a notch are identical；By above-mentioned setting, it can to work as
During motor operation, the magnetic line of force is reasonably distributed by tooth boot portion timesharing, and width of rebate is different, and the magnetic line of force be through tooth boots with forever
Air gap between magnet reaches tooth boots, thus can be changed by tooth boot portion point by changing width of rebate and tooth boots width
Magnetic density, thus reduce position between two adjacent permanent magnets it is corresponding by one or two tooth boots constituted it is one small
Magnetic conductance rate of change in section region, so as to reduce the change of magnetic field energy, and then reduces cogging torque, reduces torque ripple, subtract
Small machine vibrates and noise, improves system control accuracy.Tests prove that, stator core construction of the present utility model, Neng Gouxian
Reduction cogging torque is write, reduces motor oscillating and noise, increases substantially system control accuracy.
2. the utility model stator core construction, iron core unit after punch forming, encloses shape on vertical bar stator core chain
Structure is circularized, manufacturing process is simple, and cost is low, efficiency high.
3. the utility model also provides a kind of stator, including several are superimposed the stator core knot being fixed together vertically
Structure, the stator core construction is above-mentioned stator core construction, as a result of above-mentioned stator core construction, thus is had naturally
There are all advantages because being brought using said structure.
4. the utility model also provides a kind of motor, with above-mentioned stator core construction, determine as a result of above-mentioned
Sub- core structure, thus there are all advantages because being brought using said structure naturally.
5. the utility model also provides a kind of motor, with above-mentioned stator, as a result of above-mentioned stator, thus from
So there are all advantages because being brought using said stator.
Brief description of the drawings
In order to illustrate more clearly of the technical scheme in prior art or the utility model embodiment, below to existing
There is the accompanying drawing used in technology or embodiment description to be briefly described, it should be apparent that, for the common skill in this area
For art personnel, on the premise of not paying creative work, other accompanying drawings can also be obtained according to these accompanying drawings.
Fig. 1 is the overall structure diagram of chain type stator core construction in the prior art.
Fig. 2 is the structural representation that the iron core unit in Fig. 1 is molded on vertical bar stator iron chains.
Fig. 3 is the overall structure diagram of stator core construction in the utility model embodiment 1.
Fig. 4 is the structural representation that the iron core unit in Fig. 3 is molded on vertical bar stator iron chains.
Fig. 5 is the overall structure diagram of stator in the utility model embodiment 2.
Fig. 6 is the DC brushless motor of the pole of 12 groove 8, and all width of rebate are identical, and radian is π/72, obtained cogging torque
Data variation figure.
Fig. 7 is the DC brushless motor of the pole of 12 groove 8, and two neighboring notch has different width, one, interval notch
Two notches have identical width, and the radian of two neighboring notch is respectively π/8 and pi/2 4, obtains the data of cogging torque
Variation diagram.
Reference：01- iron core units, 02- outer annular edges, 03- tooth boots, 04- tooth yokes, 05- notches；1- iron core units, 2-
Outer annular edge, 3- tooth boots, 4- tooth yokes, 5- annular cavities, 6- notches, the mounting holes of 7- first, the mounting holes of 8- second.
Embodiment
The technical solution of the utility model is described with reference to Figure of description, it is clear that following embodiments are not
It is the whole embodiment of the utility model.Based on the embodiment described by the utility model, those of ordinary skill in the art are not having
There is the every other embodiment made and obtained under the premise of other creative works, belong to protection domain of the present utility model.
It should be noted that in description of the present utility model, term " first ", " second " are only used for describing purpose, and
It is not intended that indicating or implying relative importance.In addition, involved in the utility model different embodiments disclosed below
As long as and technical characteristic do not constitute each other conflict can just be combined with each other.
Embodiment 1
The present embodiment provides a kind of stator core construction, as shown in figure 3, being connected from beginning to end including several and forming ring junction
The iron core unit 1 of structure, each described iron core unit 1 is respectively provided with the tooth yoke 4 of both outer annular edge 2, tooth boots 3 and connection, owns
The tooth boots 3 be distributed on same circumference and enclose to form annular cavity 5；Between two tooth boots 3 of arbitrary neighborhood
It is not in contact with each other, and forms notch 6；Two adjacent width of notch 6 are different, described in two of one notch 6 in interval
The width of notch 6 is identical.
It is not in contact with each other between the stator core construction of the present embodiment, two tooth boots 3 of arbitrary neighborhood, and forms notch 6, phase
Two adjacent width of notch 6 are different, and two width of notch 6 for being spaced a notch 6 are identical；By above-mentioned setting, it can cause
When motor operation, the magnetic line of force is reasonably distributed when by tooth 3 part of boots, and the width of notch 6 is different, and the magnetic line of force is through tooth boots
Air gap between 3 and permanent magnet reaches tooth boots 3, thus can be changed by tooth boots by changing width of rebate and tooth boots width
The magnetic density of 3 parts, so that the position reduced between two adjacent permanent magnets is corresponding by one or two institute of tooth boots 3
The magnetic conductance rate of change in a bit of region constituted, so as to reduce the change of magnetic field energy, and then reduces cogging torque, reduction turns
Square is fluctuated, and reduces motor oscillating and noise, improves system control accuracy.
In the present embodiment, iron core unit 1 has 12, and the stator core construction of loop configuration is constituted from beginning to end.As
Deformation design scheme, those skilled in the art can also set the quantity of iron core unit 1 for 6,8,10,14,16
It is individual, 18,20,22,24,26,28,30 etc..
In the present embodiment, in two notches 6 of arbitrary neighborhood, the two ends of a notch 6 and the annular are interior
The radian a that the line at the center of chamber 5 is formed, is line institute of the two ends with the center of annular cavity 5 of another notch 6
3 times of the radian b of formation, so that with the preferable effect for reducing cogging torque.Those skilled in the art can also be set
The radian a that the line at the two ends of one notch 6 and the center of annular cavity 5 is formed, is another described notch 6
2-4 times of the radian b that the line at two ends and the center of annular cavity 5 is formed, so as to reach close technique effect.This reality
Apply in example, the radian a is π/8, the radian b is pi/2 4.
In the present embodiment, the tooth boots 3 have close to the first tooth boots end 31 compared with wide notch 6, and close to narrower slot mouthful 6
Second tooth boots end 32, between the first tooth boots end 31 and the center line of tooth yoke 4 have radian c, the second tooth boots end 32 with
It is 3 times of the radian c to have radian d, the radian d between the center line of tooth yoke 4, so as to turn with teeth groove is preferably reduced
The effect of square.Those skilled in the art can also set 1-4 times that radian d is radian c, so as to reach close technology effect
Really.
As shown in figure 4, the iron core unit 1 after punch forming, encloses to form described ring on vertical bar stator core chain
Shape structure.Iron core unit 1 after punch forming, encloses to form loop configuration on vertical bar stator core chain, and manufacturing process is simple, into
This low, efficiency high.
Applicant uses the DC brushless motor of the pole of 12 groove 8, controls the width of all notches 6 identical, make its radian for π/
72, the data variation of cogging torque is obtained as illustrated, data can be seen that in table, and its peak value is up to 442.18mN.m；
Applicant controls the other conditions of above-mentioned DC brushless motor constant, the width of notch 6 is changed into two neighboring
Notch 6 has different width, and two notches 6 of one notch 6 in interval have identical width, the radian of two neighboring notch
Respectively π/8 and pi/2 4, obtain the data variation of cogging torque as illustrated, data can be seen that in table, cogging torque is significantly
Reduce, its peak value is only 345.13mN.m, it will thus be seen that the technical scheme of the application, can substantially reduce cogging torque,
Be conducive to reducing motor oscillating and noise, improve system control accuracy.
Embodiment 2
The present embodiment provides a kind of stator, as shown in figure 5, being superimposed the stator iron being fixed together vertically including several
Cored structure, the stator core construction is the stator core construction described in embodiment 1.
The outer annular edge 2 is provided with the first mounting hole 7, after several described stator core construction superpositions, is worn using rivet
First mounting hole 7 is crossed to fix；The tooth yoke 3 is provided with the second mounting hole 8, several described stator core construction superpositions
Afterwards, fixed using rivet through second mounting hole 8.
The stator of the present embodiment, as a result of the stator core construction in embodiment 1, thus has because using upper naturally
State all advantages that structure is brought.
Embodiment 3
The present embodiment provides a kind of motor, with stator core construction as described in example 1 above.
The motor of the present embodiment, as a result of above-mentioned stator core construction, thus has because using above-mentioned knot naturally
All advantages that structure is brought.
Embodiment 4
The present embodiment provides a kind of motor, with stator as described in example 2 above.
The motor of this implementation, as a result of above-mentioned stator, thus has what is brought because using said stator naturally
All advantages.
Obviously, above-described embodiment is only intended to clearly illustrate example, and the not restriction to embodiment.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or
Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or
Among changing still in protection domain of the present utility model.
Claims (10)
1. a kind of stator core construction, including several connect and form the iron core unit (1) of loop configuration, each institute from beginning to end
State the tooth yoke that iron core unit (1) is respectively provided with outer annular edge (2), tooth boots (3) and the connection outer annular edge (2) and the tooth boots (3)
(4), all tooth boots (3) are distributed on same circumference and enclose to form annular cavity (5)；Two of arbitrary neighborhood
It is not in contact with each other between the tooth boots (3), and forms notch (6)；It is characterized in that：Two adjacent notches (6) have not
Same width；Being spaced two notches (6) of a notch (6) has identical width.
2. stator core construction according to claim 1, it is characterised in that：In two notches (6) of arbitrary neighborhood,
The two ends of one notch (6) and the line of centres formation radian a of the annular cavity (5), another notch (6)
It is 2-4 times of the radian b that the line of centres of two ends and the annular cavity (5), which forms radian b, the radian a,.
3. stator core construction according to claim 2, it is characterised in that：The radian a is 3 times of the radian b.
4. stator core construction according to any one of claim 1 to 3, it is characterised in that：The tooth boots (3), which have, leans on
Nearly the first tooth boots end (31) compared with wide notch (6), and close to the second tooth boots end (32) of narrower slot mouthful (6), the first tooth boots
There is radian c between (31) and the tooth yoke (4) center line of end, between the second tooth boots end (32) and the tooth yoke (4) center line
With radian d, the radian d is 1-4 times of the radian c.
5. stator core construction according to claim 4, it is characterised in that：The radian d is 3 times of the radian c.
6. stator core construction according to any one of claim 1 to 3, it is characterised in that：The iron core unit (1) exists
On vertical bar stator core chain after punch forming, enclose to form the loop configuration.
7. a kind of stator, including several are superimposed the stator core construction being fixed together, the stator core construction vertically
For the stator core construction any one of claim 1-6.
8. stator according to claim 7, it is characterised in that：The outer annular edge (2) is provided with the first mounting hole (7), some
It is fixed through first mounting hole (7) using rivet after the individual stator core construction superposition；
And/or, the tooth yoke (3) is provided with the second mounting hole (8), after several described stator core construction superpositions, uses riveting
Nail is fixed through second mounting hole (8).
9. a kind of motor, it is characterised in that：With the stator core construction as any one of claim 1-6.
10. a kind of motor, it is characterised in that：With the stator as any one of claim 7-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621169520.6U CN206575235U (en) | 2016-10-26 | 2016-10-26 | Stator core structure, stator with same and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621169520.6U CN206575235U (en) | 2016-10-26 | 2016-10-26 | Stator core structure, stator with same and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575235U true CN206575235U (en) | 2017-10-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621169520.6U Active CN206575235U (en) | 2016-10-26 | 2016-10-26 | Stator core structure, stator with same and motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571700A (en) * | 2016-10-26 | 2017-04-19 | 珠海格力电器股份有限公司 | Stator core structure, stator with same and motor |
| CN110808643A (en) * | 2018-08-06 | 2020-02-18 | 本田技研工业株式会社 | Stator core for rotating electrical machine and rotating electrical machine |
| CN111277058A (en) * | 2018-12-05 | 2020-06-12 | 广东美芝精密制造有限公司 | Stator module, motor and compressor |
-
2016
- 2016-10-26 CN CN201621169520.6U patent/CN206575235U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106571700A (en) * | 2016-10-26 | 2017-04-19 | 珠海格力电器股份有限公司 | Stator core structure, stator with same and motor |
| CN110808643A (en) * | 2018-08-06 | 2020-02-18 | 本田技研工业株式会社 | Stator core for rotating electrical machine and rotating electrical machine |
| US11056934B2 (en) | 2018-08-06 | 2021-07-06 | Honda Motor Co., Ltd. | Rotary electric machine with a stator core with teeth having different protrusion portions heights |
| CN111277058A (en) * | 2018-12-05 | 2020-06-12 | 广东美芝精密制造有限公司 | Stator module, motor and compressor |
| CN111277058B (en) * | 2018-12-05 | 2021-08-20 | 广东美芝精密制造有限公司 | Stator module, motor and compressor |
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