CN207265758U - Rotor punching, rotor and motor - Google Patents
Rotor punching, rotor and motor Download PDFInfo
- Publication number
- CN207265758U CN207265758U CN201721386774.8U CN201721386774U CN207265758U CN 207265758 U CN207265758 U CN 207265758U CN 201721386774 U CN201721386774 U CN 201721386774U CN 207265758 U CN207265758 U CN 207265758U
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- rotor
- pole
- group
- punching
- permanent magnet
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Abstract
The utility model discloses a kind of rotor punching, rotor and motor, the rotor punching (1) includes circumferentially distributed multiple rotor poles (11), radial inner end between the two neighboring rotor pole (11) is connected and radial outer end disconnects, permanent magnet mounting groove (12) is equipped between the connected radial inner end and the radial outer end of disconnection, wherein, multiple rotor poles (11) are divided into multigroup, the pole embrace of rotor pole (11) is identical described in same group, and the pole embrace of the rotor pole (11) of different groups is different.The rotor (2) of the utility model can effectively lift the working performance of motor and improve production efficiency in the case of using identical rotor punching (1) and without segmentation inserting permanent magnet (22).
Description
Technical field
It the utility model is related to technical field of motors, and in particular, to a kind of rotor punching, rotor and motor.
Background technology
The cogging torque of motor and torque pulsation are to reflect one of important indicator of motor performance, cogging torque and torque arteries and veins
Dynamic smaller motor, can more realize that vibration and the low of noise subtract, i.e., working performance is better.For interior permanent magnet machines,
It is common to have skewed-rotor, skewed stator slot, rotor segment, rotor outer surface for reducing cogging torque and the method for torque pulsation
Cut arc or bias center circular design etc..
But the methods of skewed-rotor, skewed stator slot and rotor segment, is higher to the structure and technological requirement of rotor,
Largely add the production difficulty of motor.In addition, rotor surface, which cuts the methods of arc or bias center circular design, can cause rotor
Outer surface cannot get good plastic processing.
Utility model content
For the drawbacks described above or deficiency of the prior art, the utility model provides a kind of rotor punching, rotor and motor,
Cogging torque and the torque pulsation of motor can be effectively reduced while production efficiency is improved.
To achieve the above object, the utility model provides a kind of rotor punching, and the rotor punching includes circumferentially dividing
Multiple rotor poles of cloth, the radial inner end between the two neighboring rotor pole is connected and radial outer end disconnects, and connected is described
Permanent magnet mounting groove is equipped between radial inner end and the radial outer end of disconnection, wherein, multiple rotor poles be divided into it is multigroup,
The pole embrace of rotor pole is identical described in same group, and the pole embrace of the rotor pole of different groups is different.
Preferably, the number of rotor pole is even number described in every group, at least adjacent in rotor pole described in any group
A pair of rotor pole between be folded with the different rotor pole of pole embrace.
Preferably, in rotor pole described in same group, the shape all same of each rotor pole.
Preferably, the rotor pole number in rotor pole described in each group is identical and is circumferentially sequentially alternately distributed at equal intervals.
Preferably, the rotor punching includes the first group rotor pole and the second group rotor pole, the first group rotor pole
Pole embrace is more than the pole embrace of the second group rotor pole；
Wherein, first group rotor extremely in, the radial outside wall of the rotor pole is respectively to described in circumferential both sides
Permanent magnet mounting groove is extended with extension arc sections, second group rotor extremely in, the week of the radial outside wall of the rotor pole
Retraction notch part is respectively formed with to both sides.
Preferably, the radially inner side of the permanent magnet mounting groove and radial outside are respectively formed with for spacing permanent magnet
Inner side limiting-position portion and outside limiting section.
Preferably, the circumferential side wall of the rotor pole is formed with shaped component fixing groove, and the shaped component fixing groove is along footpath
To be arranged on the outside limiting section and it is described extension arc sections or retraction notch part between.
Preferably, the radial spacing between the outside limiting section and the extension arc sections and/or the notch part that bounces back is big
In 1mm.
Preferably, the rotor pole is equipped with perforative reinforced hole.
In addition, the utility model additionally provides a kind of rotor, including rotor core and multiple permanent magnets, the rotor core
Including the multiple above-mentioned rotor punchings axially laminated, and form multiple rotor core sections vertically, multiple rotor cores
Section each permanent magnet mounting groove axially align, multiple permanent magnets be plugged in correspondingly axially align it is more
In a permanent magnet mounting groove, in the multiple rotor poles axially aligned, at least two neighboring rotor pole
Pole embrace is different.
Preferably, along the circumferential direction misplace, and misplace between the rotor punching of the two neighboring rotor core section
Angle is the multiple of 360 °/n, and n is the rotor pole number of the rotor punching.
Preferably, the rotor further includes injection molding component, and the injection molding component is filled in the recessed of the rotor
In chamber.
In addition, the utility model additionally provides a kind of motor, the motor includes stator and above-mentioned rotor.
Preferably, the stator includes stator core, on the internal circular surfaces of the stator core it is circumferentially spaced formed with
Multiple stator tooths, the inner radial surface of at least one stator tooth and the non-concentric arrangement of radially-outer surface of the rotor.
Through the above technical solutions, multiple permanent magnet mounting grooves in each rotor core section of the rotor of the utility model are equal
Axially align, and the pole embrace of at least a pair of rotor pole axially aligned is different, so as to form the wrong pole of rotor
Structure.In the case of using identical rotor punching and without segmentation inserting permanent magnet, motor is effectively reduced
Cogging torque and torque pulsation, and production efficiency greatly improved.
Other features and advantages of the utility model will be described in detail in subsequent specific embodiment part.
Brief description of the drawings
Attached drawing is to be used to provide a further understanding of the present invention, and a part for constitution instruction, and following
Embodiment be used to explain the utility model together, but do not form the limitation to the utility model.In the accompanying drawings：
Fig. 1 is the front view of the rotor punching in specific embodiment of the present utility model；
Fig. 2 is the stereogram for the rotor for employing the rotor punching in Fig. 1；
Fig. 3 is the front view of the rotor in Fig. 2.
Description of reference numerals：
1 rotor punching, 11 rotor pole
111 first group rotor pole, 112 second group rotor pole
12 permanent magnet mounting grooves 13 extend arc sections
14 15 inner side limiting-position portions of retraction notch part
16 outside limiting section, 17 shaped component fixing groove
18 reinforced hole, 2 rotor
21 rotor core, 22 permanent magnet
23 injection molding components
Embodiment
Specific embodiment of the present utility model is described in detail below in conjunction with attached drawing.It should be appreciated that herein
Described embodiment is only used for describing and explaining the present invention, and is not intended to limit the present invention.
It should be noted that in the case where there is no conflict, the feature in embodiment and embodiment in the utility model can
To be mutually combined.
In the utility model, in the case where not making conversely explanation, the noun of locality such as " upper and lower, top, bottom " used is usually
It is each component mutual alignment either on vertical, vertical or gravity direction for direction shown in the drawings
Relationship description word.
The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
The utility model provides a kind of rotor punching 1, as shown in Figure 1, the rotor punching 1 include it is circumferentially distributed multiple
Rotor pole 11, the radial inner end between two neighboring rotor pole 11 is connected and radial outer end disconnects, connected radial inner end with it is disconnected
Permanent magnet mounting groove 12 is equipped between the radial outer end opened, wherein, multiple rotor poles 11 divide to be multigroup, same group rotor pole 11
Pole embrace is identical, and the pole embrace of the rotor pole 11 of different groups is different.
When using the rotor punching 1 production rotor core, high velocity ram machine can be first passed through and stamped out with certain axial long
The rotor core section of degree.And then, in the next rotor core section of punching press, the punch die of punching machine need to be rotated a certain angle,
So that multiple 12 axis of permanent magnet mounting groove in next rotor core section being stamped to form and a upper rotor core section
To aliging one by one, and cause in the axial direction of two neighboring rotor core section laminates the rotor pole 11 of alignment, at least a pair of
The pole embrace of rotor pole 11 is different.After inserting upper permanent magnet, the magnetic circuit that each rotor core section produces can mutually stagger
Certain angle, so as to form the wrong pole structure of rotor.In addition, the pole embrace in multiple rotor poles 11 designs rational situation
Under, the torque ripple of each rotor core section can be cancelled out each other.
As it can be seen that above-mentioned rotor be able to need not be segmented using the identical rotor punching 1 of shape and structure and permanent magnet
Wrong pole effect is realized in the case of inserting, significantly reduces the production difficulty of the rotor with wrong pole structure.I.e. the structure is in reality
Existing cogging torque and torque pulsation is low subtract in the case of, effectively increase production efficiency and reduce production cost.
Preferably, the number per group rotor pole 11 is even number, in any group rotor pole 11, at least adjacent one
The rotor pole 11 different to being folded with pole embrace between rotor pole 11.At this time, in the process of each rotor core section of sequentially punching press
In, (n is the rotor pole 11 of rotor punching 1 to the angle for the 360 °/n that need to only stagger between two neighboring rotor core section
Number), you can realize mutual dislocation.Correspondingly, punch die needs rotating angle minimum and constant every time, further improves production speed
Degree.
Further, in same group rotor pole 11, the shape of each rotor pole 11 may be configured as shape and structure all same.
The magnetic circuit that pole embrace and the rotor pole of shape and structure all same 11 produce is relatively uniform, is conducive to the wrong pole that rotor forms rule
Structure, the carry out control easy to technical staff to cogging torque and the low degree of subtracting of torque pulsation.
Further, it is identical and circumferentially sequentially hand at equal intervals to be formed as number for the rotor pole 11 in each group rotor pole 11
For distribution.As it can be seen that the integral arrangement of rotor punching 1 is more uniformly reasonable at this time, the magnetic circuit produced using its rotor is also corresponding
In uniform trend, so that with good electromagnetic performance.
Specifically, as shown in Figure 1, rotor punching 1 may include the first group rotor pole 111 and the second group rotor pole 112, first
The pole embrace of group rotor pole 111 is more than the pole embrace of the second group rotor pole 112；Wherein, in the first group rotor pole 111,
The radial outside wall of rotor pole 11 is extended with to the permanent magnet mounting groove 12 of circumferential both sides respectively extends arc sections 13, at second group
In rotor pole 112, the circumferential both sides of the radial outside wall of rotor pole 11 are respectively formed with retraction notch part 14.
It is not connected to all the time it should be noted that extending between arc sections 13 and retraction notch part 14, i.e. permanent magnet mounting groove
12 radial outer end disconnects all the time.In addition, extending arc sections 13 and the radial outside shape for the notch part 14 that bounces back can form
For circular arc, and the extension arc sections 13 are always positioned at a circle using the center of rotor punching 1 as the center of circle with retraction notch part 14
On.The structure to be more easily implemented the plastic process that rotor outer periphery face carries out.
Preferably, the radially inner side of permanent magnet mounting groove 12 and radial outside are respectively formed with spacing permanent magnet
Side limiting section 15 and outside limiting section 16.It should be noted that inner side limiting-position portion 15 and outside limiting section 16 are formed as in Fig. 1
The inner support projection of shown disconnection and the shape of outer support projection, or be formed as connected interior magnetic conduction bridge and outer magnetic conduction bridge
Shape.Above two position limiting structure of different shapes can carry out the permanent magnet being plugged in permanent magnet mounting groove 12 effective
Firm effect, increases the job stability of rotor.But from reduce rotor leakage and improve the angle of motor working performance and
Speech, inner support projection and outer support projection should be preferred shape and structure.
Further, the circumferential side wall of rotor pole 11 may also be formed with shaped component fixing groove 17, which fixes
Groove 17 is disposed radially outwardly with limiting section 16 and extends between arc sections 13 or retraction notch part 14.
Rotor produce during, it will usually using injection molding component come fill in rotor with cavity position with
Increase its working strength, so as to reduce vibration and the noise of motor.But since injection molding component is without very strong viscous
Property, during rotor is high-speed rotating, the component easily occur flies out situation about coming off from rotor cavity, seriously affects and turns
The normal work of son.Therefore, by setting the shaped component fixing groove 17, injection molding component can be strengthened in rotor cavity
Stability, so as to improve the working performance of motor.
Preferably, outside limiting section 16 and the radial spacing extended between arc sections 13 and/or retraction notch part 14 are more than
1mm.In other words, incited somebody to action between outside limiting section 16 and extension arc sections 13 and between outside limiting section 16 and retraction notch part 14
Recess area is respectively formed with, for clogging injection molding component.
Specifically, perforative reinforced hole 18 can be equipped with rotor pole 11.The reinforced hole 18 is used to clog injection molding component,
Further strengthen the intensity of rotor.
In addition, the utility model additionally provides a kind of rotor 2, as shown in Figure 2 to Figure 3, which includes rotor core 21
With multiple permanent magnets 22, rotor core 21 includes the above-mentioned multiple rotor punchings 1 axially laminated, and forms multiple turns vertically
Sub- core packet, each permanent magnet mounting groove 12 of multiple rotor core sections are axially aligned, and multiple permanent magnets 22 are correspondingly
It is plugged in the multiple permanent magnet mounting grooves 12 axially aligned, in the multiple rotor poles 11 axially aligned, at least adjacent two
The pole embrace of a rotor pole 11 is different.
As it can be seen that since the pole embrace of at least two adjacent rotor pole 11 axially aligned is different, which forms
Wrong pole effect, can effectively reduce cogging torque and torque pulsation.Further, since only need to use same rotor punching 1, this turn
The production difficulty of son 2 substantially reduces, and production efficiency is improved while cost is reduced.
Specifically, along the circumferential direction misplace between the rotor punching 1 of two neighboring rotor core section, and the angle that misplaces is
The multiple of 360 °/n, n are 11 numbers of rotor pole of rotor punching 1.In other words, in the process of high velocity ram machine stamping rotor iron core
In, per punching press one rotor core section, the angle of a 360 °/n of punch die rotatable 1~(n-1), the then next rotor of punching press again
Core packet.After the repeated several times punch steps, each permanent magnet mounting groove 12 of molding rotor 2 is axially aligned, permanent magnetism
Body 22 need not be segmented and insert, that is, realize the wrong pole effect of rotor 2
Preferably, rotor 2 further includes injection molding component 23, and injection molding component 23 is filled in the cavity of rotor, makes
It is more complete uniform to obtain the monnolithic case of rotor 2, can effectively strengthen the working strength of rotor and be conducive to obtain preferably plastic
Treatment effect.
In addition, the utility model additionally provides a kind of motor, which includes stator and above-mentioned rotor 2.By using turn
Son 2, the cogging torque and torque pulsation produced in the motor course of work can obtain effective reduction, possess good workability
Energy.Further, since production difficulty reduces, the production efficiency of the motor can be substantially improved.
Preferably, stator includes stator core, circumferentially spaced formed with multiple stators on the internal circular surfaces of stator core
Tooth, the inner radial surface of at least one stator tooth and the non-concentric arrangement of radially-outer surface of rotor 2.By setting the stator tooth knot
Structure, the back-emf harmonic wave magnetic circuit formed on stator core has part and cancels out each other when acting on rotor 2, so as to reduce motor work
The cogging torque produced during work and torque pulsation, improve the working performance of motor.
The preferred embodiment of the utility model, still, the utility model and unlimited are described in detail above in association with attached drawing
Detail in the above embodiment, can be to the skill of the utility model in the range of the technology design of the utility model
Art scheme carries out a variety of simple variants, these simple variants belong to the scope of protection of the utility model.
It is further to note that each particular technique feature described in above-mentioned embodiment, in not lance
In the case of shield, it can be combined by any suitable means, in order to avoid unnecessary repetition, the utility model is to each
The possible combination of kind no longer separately illustrates.
In addition, it can also be combined between a variety of embodiments of the utility model, as long as it is not disobeyed
The thought of the utility model is carried on the back, it should equally be considered as content disclosed in the utility model.
Claims (14)
- A kind of 1. rotor punching, it is characterised in that the rotor punching (1) includes circumferentially distributed multiple rotor poles (11), Radial inner end between the two neighboring rotor pole (11) is connected and radial outer end disconnects, and the connected radial inner end is with breaking Permanent magnet mounting groove (12) is equipped between the radial outer end opened, wherein, multiple rotor poles (11) be divided into it is multigroup, it is same The pole embrace of the group rotor pole (11) is identical, and the pole embrace of the rotor pole (11) of different groups is different.
- 2. rotor punching according to claim 1, it is characterised in that the number of rotor pole (11) is even number described in every group It is a, in rotor pole (11) described in any group, at least pole embrace is folded between rotor pole described in adjacent pair (11) The different rotor poles (11).
- 3. rotor punching according to claim 1, it is characterised in that in rotor pole (11) described in same group, Ge Gesuo State the shape all same of rotor pole (11).
- 4. rotor punching according to claim 1, it is characterised in that the rotor pole (11) in rotor pole described in each group (11) Number is identical and is circumferentially sequentially alternately distributed at equal intervals.
- 5. rotor punching according to claim 4, it is characterised in that the rotor punching (1) includes the first group rotor pole (111) and the second group rotor pole (112), the pole embrace of the first group rotor pole (111) are more than the second group rotor pole (112) pole embrace；Wherein, in the first group rotor pole (111), the radial outside wall of the rotor pole (11) is respectively to circumferential both sides The permanent magnet mounting groove (12), which is extended with, extends arc sections (13), in the second group rotor pole (112), the rotor pole (11) the circumferential both sides of radial outside wall are respectively formed with retraction notch part (14).
- 6. rotor punching according to claim 5, it is characterised in that the radially inner side of the permanent magnet mounting groove (12) and Radial outside is respectively formed with inner side limiting-position portion (15) and outside limiting section (16) for spacing permanent magnet.
- 7. rotor punching according to claim 6, it is characterised in that the circumferential side wall of the rotor pole (11) formed with into Type component fixing groove (17), the shaped component fixing groove (17) are arranged radially in the outside limiting section (16) and the extension Between arc sections (13) or retraction notch part (14).
- 8. rotor punching according to claim 7, it is characterised in that the outside limiting section (16) and the extension circular arc Radial spacing between portion (13) and/or retraction notch part (14) is more than 1mm.
- 9. the rotor punching according to any one in claim 1~8, it is characterised in that the rotor pole (11) is equipped with Perforative reinforced hole (18).
- 10. a kind of rotor, including rotor core (21) and multiple permanent magnets (22), it is characterised in that the rotor core (21) Including the multiple rotor punchings (1) according to any one in claim 1~9 axially laminated, and formed vertically Multiple rotor core sections, each permanent magnet mounting groove (12) of multiple rotor core sections are axially aligned, Duo Gesuo State permanent magnet (22) to be plugged in correspondingly in the multiple permanent magnet mounting grooves (12) axially aligned, what is axially aligned In multiple rotor poles (11), the pole embrace of at least two neighboring rotor pole (11) is different.
- 11. rotor according to claim 10, it is characterised in that the rotor punching of the two neighboring rotor core section Piece along the circumferential direction misplaces between (1), and the multiple that angle is 360 °/n that misplaces, n are the rotor pole of the rotor punching (1) (11) number.
- 12. rotor according to claim 11, it is characterised in that the rotor (2) further includes injection molding component (23), The injection molding component (23) is filled in the cavity of the rotor.
- 13. a kind of motor, it is characterised in that the motor includes stator and according to any one in claim 10~12 Rotor (2).
- 14. motor according to claim 13, it is characterised in that the stator includes stator core, the stator core Internal circular surfaces on it is circumferentially spaced formed with multiple stator tooths, the inner radial surface of at least one stator tooth with described turn The non-concentric arrangement of radially-outer surface of sub (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721386774.8U CN207265758U (en) | 2017-10-25 | 2017-10-25 | Rotor punching, rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721386774.8U CN207265758U (en) | 2017-10-25 | 2017-10-25 | Rotor punching, rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207265758U true CN207265758U (en) | 2018-04-20 |
Family
ID=61915927
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721386774.8U Active CN207265758U (en) | 2017-10-25 | 2017-10-25 | Rotor punching, rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207265758U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659012A (en) * | 2017-10-25 | 2018-02-02 | 常州威灵电机制造有限公司 | Rotor punching, rotor and motor |
-
2017
- 2017-10-25 CN CN201721386774.8U patent/CN207265758U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107659012A (en) * | 2017-10-25 | 2018-02-02 | 常州威灵电机制造有限公司 | Rotor punching, rotor and motor |
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