CN107834718A - Motor - Google Patents
Motor Download PDFInfo
- Publication number
- CN107834718A CN107834718A CN201711100224.XA CN201711100224A CN107834718A CN 107834718 A CN107834718 A CN 107834718A CN 201711100224 A CN201711100224 A CN 201711100224A CN 107834718 A CN107834718 A CN 107834718A
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- circle
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- 210000000515 tooth Anatomy 0.000 claims description 92
- 238000004804 winding Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims 1
- 230000010349 pulsation Effects 0.000 abstract description 12
- 230000000694 effects Effects 0.000 description 7
- 238000009826 distribution Methods 0.000 description 6
- 238000010923 batch production Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000009835 boiling Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
-
- 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
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/16—Stator cores with slots for windings
- H02K1/165—Shape, form or location of the slots
-
- 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
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
- H02K1/2753—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets the rotor consisting of magnets or groups of magnets arranged with alternating polarity
- H02K1/276—Magnets embedded in the magnetic core, e.g. interior permanent magnets [IPM]
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K5/00—Casings; Enclosures; Supports
- H02K5/24—Casings; Enclosures; Supports specially adapted for suppression or reduction of noise or vibrations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a kind of motor, motor includes：Stator, stator include stator core；Rotor, rotor includes rotor core, wherein, the cross section of at least one stator tooth inner surface include one section of teeth portion arc section and teeth portion arc section the center of circle be located at stator tooth inner surface remote stator core center side, the cross section of the outer surface of the rotor core under each magnetic pole includes one section of circular arc non-radiused or with axis hole decentraction.Motor according to embodiments of the present invention, by setting the rotor core of the cross section of outer surface and the circular arc of magnetic pole decentraction or being non-radiused rotor core with cross section, the torque pulsation of motor is reduced, and then reduce the work noise of motor.
Description
Technical field
The present invention relates to technical field of motors, more particularly, to a kind of motor.
Background technology
Permanent magnetic brushless in correlation technique, majority is fractional-slot concentratred winding, wherein, the inner surface of stator tooth is transversal
Face is formed as the arc section shape concentric with its centre bore, and at each magnetic pole the outer surface cross section of rotor be formed as and its
The concentric arc section shape of axis hole.Thus, cause winding mmf harmonics content larger, cause the torque pulsation of motor larger,
Produce obvious vibration noise.
The content of the invention
It is contemplated that at least solves one of technical problem present in prior art.Therefore, the present invention proposes a kind of electricity
Machine, the motor oscillating and noise are relatively low.
Motor according to embodiments of the present invention, including：Stator, the stator include stator core and winding, the stator
Multiple stator tooths on iron core formed with centre bore and around the centre bore, limit between adjacent two stator tooths
Stator slot, the winding are set around the stator slot；Rotor, the rotor are rotatably arranged in the centre bore and including turning
Sub- iron core and multiple magnets, multiple opening towards stator openings on the rotor core formed with axis hole and around the axis hole
Formula magnet slot, multiple magnets respectively correspondingly inserting in multiple opened magnet grooves, wherein, it is at least one described fixed
The cross section of sub- tooth inner surface includes one section of teeth portion arc section and the center of circle of the teeth portion arc section is located at table in the stator tooth
The side at the remote stator core center in face, the cross section of the outer surface of the rotor core under each magnetic pole include one
Non-radiused or with the axis hole decentraction the circular arc of section.
Motor according to embodiments of the present invention, by turn for setting the cross section of outer surface and the circular arc of magnetic pole decentraction
Sub- iron core is non-radiused rotor core with cross section, reduces the torque pulsation of motor, and then reduce the work of motor
Noise.
Alternatively, the cross section of each stator tooth inner surface includes one section of teeth portion arc section, and the tooth
The center of circle of portion's arc section and the center of circle of the centre bore are misaligned.
According to further embodiment of the present invention, the cross section of the stator tooth inner surface also includes：Two teeth portion transition
Section, two teeth portion changeover portions are connected to the both ends of the teeth portion arc section.
Alternatively, the teeth portion changeover portion forms linear or step.
Alternatively, the teeth portion changeover portion forms arc line shaped, and the center of circle of the teeth portion changeover portion and the teeth portion circular arc
The center of circle of section is misaligned.
According to one embodiment of present invention, the cross section of the outer surface of the rotor core under each magnetic pole includes：
Rotor arc section, the inner surface of the rotor arc section and the multiple stator tooth are rotatably assorted；Two rotor changeover portions, two
The rotor changeover portion is connected to the both ends of the rotor arc section in the circumferential.
Alternatively, the center of circle of the rotor arc section overlaps or misaligned with the center of circle of the axis hole.
Alternatively, the rotor changeover portion forms arc line shaped, and the center of circle of the rotor changeover portion and the rotor circular arc
The center of circle of section is misaligned.
Alternatively, the rotor changeover portion forms linear or step.
Alternatively, at least two combination that the rotor changeover portion is formed in linear, step, circular arc.
According to another embodiment of the invention, the notch of each opened magnet groove is provided with enters conduct to the magnet
To spacing stopper protrusion, the number of the stopper protrusion of each magnet slot is two, and two stopper protrusions connect respectively
It is connected on two magnetic poles for limiting the opened magnet groove.
The additional aspect and advantage of the present invention will be set forth in part in the description, and will partly become from the following description
Obtain substantially, or recognized by the practice of the present invention.
Brief description of the drawings
The above-mentioned and/or additional aspect and advantage of the present invention will become in the description from combination accompanying drawings below to embodiment
Substantially and it is readily appreciated that, wherein：
Fig. 1 is the structural representation of motor according to embodiments of the present invention；
Fig. 2 is the structural representation according to the stator core of the first embodiment of the present invention；
Fig. 3 is the structural representation of stator core according to the second embodiment of the present invention；
Fig. 4 is the structural representation according to the rotor core of the first embodiment of the present invention；
Fig. 5 is the structural representation of rotor core according to the second embodiment of the present invention；
Fig. 6 is the structural representation of rotor core according to the third embodiment of the invention.
Reference：
Motor 100；
Stator 1；
Stator core 11；Centre bore 101；Stator slot 102；Stator tooth 111；Stator yoke 112；
Stator core inner surface S1；Teeth portion arc section S11；Teeth portion changeover portion S12；
Rotor 2；
Rotor core 21；Axis hole 201；Opened magnet groove 202；Breach 203；
Rotor core exterior surface S2；Rotor arc section S21；Rotor changeover portion S22；
Magnet 22.
Embodiment
Embodiments of the invention are described below in detail, the example of the embodiment is shown in the drawings, wherein from beginning to end
Same or similar label represents same or similar element or the element with same or like function.Below with reference to attached
The embodiment of figure description is exemplary, is only used for explaining the present invention, and is not considered as limiting the invention.
In the description of the invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", " on ", " under ", "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom " " interior ", " outer ", " up time
The orientation or position relationship of the instruction such as pin ", " counterclockwise ", " axial direction ", " radial direction ", " circumference " be based on orientation shown in the drawings or
Position relationship, it is for only for ease of and describes the present invention and simplify description, rather than indicates or imply that signified device or element must
There must be specific orientation, with specific azimuth configuration and operation, therefore be not considered as limiting the invention.In addition, limit
Surely there is " first ", one or more this feature can be expressed or be implicitly included to the feature of " second ".The present invention's
In description, unless otherwise indicated, " multiple " are meant that two or more.
In the description of the invention, it is necessary to illustrate, unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected, or be integrally connected；Can
To be mechanical connection or electrical connection；Can be joined directly together, can also be indirectly connected by intermediary, Ke Yishi
The connection of two element internals.For the ordinary skill in the art, with concrete condition above-mentioned term can be understood at this
Concrete meaning in invention.
Motor 100 according to embodiments of the present invention is described below with reference to Fig. 1-Fig. 6.Here motor 100 can be permanent magnetism
Motor 100.
As shown in figs 1 to 6, motor 100 according to embodiments of the present invention includes：Stator 1 and rotor 2.
Specifically, stator 1 includes stator core 11 and winding (not shown), formed with centre bore on stator core 11
101 and multiple stator tooths 111 around centre bore 101, stator slot 102, winding are limited between adjacent two stator tooths 111
It is set around stator slot 102.Rotor 2 is rotatably arranged in centre bore 101 and including rotor core 21 and multiple magnets 22, rotor
Multiple opened magnet grooves 202 being open towards stator 1 on iron core 21 formed with axis hole 201 and around axis hole 201, multiple magnets
22 respectively correspondingly inserting in multiple opened magnet grooves 202.
Here it is possible to understand, " opened magnet groove 202 " refers to：The magnet slot of unenclosed construction is configured to, also
It is open slot, now rotor core exterior surface S2 has breach 203.Thus illustrate, the rotor core described in this specification
21 refer to that outer surface S2 has the rotor core 21 of breach 203.
Wherein, at least one stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11 and teeth portion arc section
The S11 center of circle is located at the side at the stator tooth inner surface S1 remote nearly center of stator core 11, i.e. teeth portion arc section S11 is to center
It is prominent in hole 101, the cross section of the rotor core exterior surface S2 under each magnetic pole include one section it is non-radiused or with axis hole 201
The circular arc of decentraction.
Motor 100 according to embodiments of the present invention, by setting outer surface S2 cross section and the circular arc of magnetic pole decentraction
The rotor core 21 of shape is non-radiused rotor core 21 with cross section, can reduce the torque pulsation of motor 100, enter
And reduce the work noise of motor 100.
In some instances, stator core 11 and rotor core 21 can form by the way that multilayer lamellar body is stacked.Stator iron
Core 11 includes stator yoke 112 and multiple stator tooths 111, and centre bore 101 is limited to the center of multiple stator tooths 111 and along motor
The 100 axial both sides end face axially through stator core 11, stator slot 102 are limited to per two adjacent stator tooths 111 it
Between and along the axial both sides end face axially through stator core 11 of motor 100, winding is around being located on stator slot 102, the edge of rotor 2
The central axis being axially inserted into centre bore 101 and around motor 100 in centre bore 101 is rotatable.
Further, rotor 2 includes rotor core 21 and multiple magnets 22, and axis hole 201 and multiple opened magnet grooves 202 are equal
Along axially two side sections axially through rotor core 21 of motor 100, wherein, axis hole 201 is located at the center of rotor core 21
Place and for installing rotating shaft (not shown), multiple opened magnet grooves 202 around axis hole 201 and for installing multiple magnets 22,
A magnet 22 is mounted in i.e. each opened magnet groove 202.
In some instances, each stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11, and teeth portion
The arc section S11 center of circle and the center of circle of centre bore 101 are misaligned.For example, the teeth portion arc section S11 of each stator tooth 111 circle
The heart can be located on same circle, and the radial dimension of the circle is more than the center of circle of centre bore 101 to the distance of stator tooth 111.
Thus, convenient processing, and can be better achieved and arc effect is cut to stator 1, stator 1 is preferably coordinated with above-mentioned rotor 2,
Preferably reduce winding mmf harmonics content, reduce the torque pulsation of motor 100, improve the vibration noise problem of motor 100.
As shown in Figures 2 and 3, also included according to further embodiment of the present invention, stator tooth inner surface S1 cross section：
Teeth portion changeover portion S12 positioned at teeth portion arc section S11 both ends.That is teeth portion changeover portion S12 includes two, two teeth portion changeover portions
S12 is connected to teeth portion arc section S11 both ends in the circumferential.
In some optional examples, teeth portion changeover portion S12 forms linear or step.
In other optional examples, teeth portion changeover portion S12 formed arc line shaped, and the teeth portion changeover portion S12 center of circle with
The teeth portion arc section S11 center of circle is misaligned.
Thus, convenient processing, and can be better achieved and arc effect is cut to stator 1, make stator 1 preferably with above-mentioned turn
Son 2 coordinates, and preferably reduces winding mmf harmonics content, reduces the torque pulsation of motor 100, improves the vibration of motor 100
Noise problem.
As Figure 4-Figure 6, according to one embodiment of present invention, the horizontal stroke of the rotor core exterior surface S2 under each magnetic pole
Section includes：Rotor arc section S21 and two rotors changeover portion S22, rotor arc section S21 and multiple stator tooths 111 interior table
Face S1 is rotatably assorted, and two rotor changeover portion S22 are connected to rotor arc section S21 both ends in the circumferential.
In some instances, one of rotor changeover portion S22 is connected with the opened magnet groove 202 positioned at magnetic pole side,
Another rotor changeover portion S22 is connected with another opened magnet groove 202 positioned at magnetic pole opposite side, each rotor changeover portion
S22 does not fall on rotor arc section S21 adjacent thereto basic circle.
As shown in figure 4, in some optional examples, the rotor arc section S21 center of circle overlaps with the center of circle of axis hole 201.
Thus, it is possible to make distribution of the magnet 22 on rotor core 21 more uniform, and then in the course of work of motor 100, rotor 2
When being rotated with stator 1 by magnetic evenly, the job stability of motor 100 is improved.
In some specific examples, the size of the rotor arc section S21 corresponding to multiple magnetic poles is identical, and in axis hole 201
Circumference on be uniformly distributed.That is, multiple rotor arc section S21 radius, length are mutually the same, and multiple rotor circular arcs
The center of circle of the section S21 center of circle with axis hole 201 overlaps.Thus, the processing and batch production of rotor core 21 are not only facilitated, and
And the stability of rotation of rotor 2 can be improved.
As shown in figure 4, in some specific examples, rotor arc section S21 and rotor changeover portion S22 form camber line respectively
Shape, and the rotor arc section S21 center of circle and the center of circle of axis hole 201 are concentric, rotor changeover portion the S22 center of circle and rotor arc section
The S21 center of circle is misaligned, i.e., the rotor changeover portion S22 center of circle relative to rotor arc section S21 center of circle eccentric setting.
As shown in Figure 5 and Figure 6, in other optional examples, the rotor arc section S21 center of circle and the circle of axis hole 201
The heart is misaligned, i.e., the rotor arc section S21 center of circle relative to axis hole 201 center of circle eccentric setting.
For example, each rotor arc section S21 center of circle and the center of circle of axis hole 201 are misaligned.Thus, can reduce
Winding mmf harmonics content, on the premise of improving the vibration of motor 100 and noise problem, make turn of rotor 2 and stator 1
It is dynamic to coordinate more steady, the stability of rotation of raising rotor 2.Certainly, the invention is not restricted to this, can also only have one or more
The individual rotor arc section S21 center of circle and the center of circle of axis hole 201 is misaligned, to meet different use demands.
In some specific examples, rotor changeover portion S22 forms non-radiused, such as rotor changeover portion S22 can be formed
Linear or step.
Certainly, rotor changeover portion S22 can also be linear, step, one kind in circular arc or wherein at least two kinds
Combination.When rotor changeover portion S22 is any two kinds of combination in linear, step and circular arc, it is connected to and turns
Each in the rotor changeover portion S22 at sub- arc section S21 both ends, can with one section for linear, another section be step, also may be used
With one section for linear, another section is circular arc, can be with one section for step, and another section is circular arc.
Arc effect is cut to rotor 2 thus, it is possible to be better achieved, rotor 2 is coordinated with stator 1 more flat when rotating
Surely, to reduce winding mmf harmonics content, the torque pulsation of motor 100 is reduced, the vibration and noise for improving motor 100 are asked
Topic.
According to still another embodiment of the invention, the notch of each opened magnet groove 202 is provided with is carried out radially to magnet 22
Spacing stopper protrusion, the number of the stopper protrusion of each magnet slot 202 is two, and two stopper protrusions are connected to restriction
Go out on two magnetic poles of opened magnet groove 202.Each opened magnet groove 202 may be used to install a magnet 22, Jin Erke
Radially spacing stopper protrusion is carried out to magnet 22 to be set in the notch of opened magnet groove 202, to be carried out radially to magnet 22
It is spacing.
Motor 100 with reference to Fig. 1 descriptions according to one specific embodiment of invention.
As shown in figure 1, motor 100 includes stator core 11, winding, rotor core 21 and magnet 22, stator core 11 has
There are centre bore 101 and multiple circumferentially spaced stator tooths 111 along centre bore 101, limited between two neighboring stator tooth 111
Make the stator slot 102 connected with centre bore 101, winding is around being located on stator tooth 111 and at least a portion is contained in stator slot
In 102.Rotor core 21 is provided with axis hole 201 and multiple circumferentially spaced opened magnet grooves 202 along axis hole 201, often
The opening of individual opened magnet groove 202 towards the side of stator core 11, multiple magnets 22 respectively correspondingly inserting in multiple open type magnetic
In body groove 202.
Wherein, stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11 and is connected to teeth portion circular arc
The teeth portion changeover portion S12 at section S11 both ends.The teeth portion arc section S11 center of circle is located at stator tooth inner surface S1 remote stator core
The center of circle of the side at 11 centers, i.e. the teeth portion arc section S11 center of circle and centre bore 101 is misaligned all the time and teeth portion arc section S11
The center of circle and centre bore 101 the center of circle respectively inside and outside stator tooth inner surface S1, teeth portion changeover portion S12 is formed along fixed
The radially inwardly outer oblique line gradually extended to the direction away from teeth portion arc section S11 of sub- iron core 11.
Further, the cross section of the rotor core exterior surface S2 under each magnetic pole include one section of rotor arc section S21 and
It is connected to the rotor changeover portion S22 at rotor arc section S21 both ends.The rotor arc section S21 center of circle and the center of circle of axis hole 201 is same
The heart, rotor changeover portion S22 form stairstepping.
Referring to Fig. 2 and Fig. 3, the stator 1 of motor 100 according to embodiments of the present invention is described in detail.
First embodiment：
As shown in Fig. 2 at least one stator tooth inner surface S1 of the stator core 11 of stator 1 cross section includes one section of tooth
Portion arc section S11, and the teeth portion arc section S11 center of circle is located at the side of stator tooth inner surface S1 remote centre bore 101.
Alternatively, each stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11, and each teeth portion circle
The segmental arc S11 center of circle is respectively positioned on the side of corresponding stator tooth inner surface S1 remote centre bore 101.
In the example shown in fig. 2, each stator tooth inner surface S1 cross section include one section of teeth portion arc section S11 and
The teeth portion changeover portion S12 at teeth portion arc section S11 both ends is connected to, wherein, teeth portion changeover portion S12 falls to be justified in connected teeth portion
Outside basic circle where segmental arc S11.
Preferably, each stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11 and two are connected to
The linear teeth portion changeover portion S12 at teeth portion arc section S11 both ends, and two teeth portion changeover portion S12 are on teeth portion arc section S11's
Centerline axis is symmetrical, and linear teeth portion changeover portion S12 falls outside the basic circle where connected teeth portion arc section S11,
Also, each teeth portion arc section S11 size all same, each teeth portion changeover portion S12 size also all same.
Second embodiment：
As shown in figure 3, at least one stator tooth inner surface S1 of stator core 11 cross section includes one section of teeth portion circular arc
The section S11 and step teeth portion changeover portion S12 for being connected to teeth portion arc section S11 both ends, wherein, the teeth portion arc section S11 center of circle
Positioned at the side of stator tooth inner surface S1 remote centre bore 101.
Alternatively, each stator tooth inner surface S1 cross section includes one section of teeth portion arc section S11 and is connected to correspondingly
Teeth portion arc section S11 both ends step teeth portion changeover portion S12, and each teeth portion arc section S11 center of circle is respectively positioned on correspondingly
Stator tooth inner surface S1 remote centre bore 101 side.
In the example shown in Fig. 3, each stator tooth inner surface S1 cross section include one section of teeth portion arc section S11 and
The step teeth portion changeover portion S12 at teeth portion arc section S11 both ends corresponding to being connected to, also, two step teeth portion changeover portions
S12 is symmetrical on corresponding teeth portion arc section S11 centerline axis, each teeth portion arc section S11 size all same, often
Individual step teeth portion changeover portion S12 structure snd size all same.
Thus, convenient processing, and can be better achieved and arc effect is cut to stator 1, make stator 1 preferably with above-mentioned turn
Son 2 coordinates, and preferably reduces winding mmf harmonics content, reduces the torque pulsation of motor 100, improves the vibration of motor 100
Noise problem.
Referring to Fig. 4-Fig. 6, the rotor 2 of motor 100 according to embodiments of the present invention is described in detail.
First embodiment：
As shown in figure 4, rotor core 21 has multiple opened magnet grooves 202 circumferentially arranged successively along it, with each magnetic
The outer surface S2 of extremely relative rotor core 21 cross section is made up of rotor arc section S21 and rotor changeover portion S22, and rotor
Arc section S21 is arranged concentrically with axis hole 201, and rotor changeover portion S22 does not fall the basic circle in connected rotor arc section S21
On.
Alternatively, the outer surface S2 of the rotor core 21 relative with each magnetic pole cross section includes circumferential along motor 100
The rotor arc section S21 being sequentially distributed, rotor arc section S21 both ends are connected to rotor changeover portion S22, rotor arc section
The S21 center of circle overlaps with the center of circle of axis hole 201, and each rotor changeover portion S22 does not fall in two arc section S21 adjacent thereto
In the basic circle of any one on.
That is, the outer surface S2 of rotor core 21 cross section is by multiple rotor arc section S21 and two rotor mistakes
A section S22 compositions are crossed, multiple rotor arc section S21 both ends are respectively connected with rotor changeover portion S22, and adjacent rotor changeover portion
It is spaced apart between S22, to be formed as opened magnet groove 202.Arc effect is cut to rotor 2 thus, it is possible to be better achieved, makes to turn
Son 2 is more steady when being rotated with the cooperation of stator 1, to reduce winding mmf harmonics content, reduces the torque pulsation of motor 100,
Improve vibration and the noise problem of motor 100.
Preferably, as shown in figure 4, each rotor arc section S21 center of circle overlaps with the center of circle of axis hole 201.Thus, it is possible to
Make distribution of the magnet 22 on rotor core 21 more uniform, and then in the course of work of motor 100,1 turn of rotor 2 and stator
When dynamic by magnetic evenly, the job stability of motor 100 is improved.
Preferably, as shown in figure 4, the size of the rotor arc section S21 corresponding to multiple magnetic poles is identical, and in axis hole 201
Circumference on be uniformly distributed.That is, multiple rotor arc section S21 radius, length are mutually the same, multiple rotor arc sections
The center of circle of the S21 center of circle with axis hole 201 overlaps, i.e., multiple rotor arc section S21 are located on same circle, and all turns
Sub- changeover portion S22 is all fallen within the basic circle where multiple rotor arc section S21.Thus, not only facilitate the processing of rotor 2 and criticize
Amount production, and the stability of rotation of rotor 2 can be improved.
In the specific example shown in Fig. 4, rotor arc section S21 both ends are connected with rotor changeover portion S22, each rotor
The arc section S21 center of circle overlaps with the center of circle of axis hole 201, and each rotor changeover portion S22 includes being connected with rotor arc section S21
Circular arc and the stairstepping that is connected with the circular arc.
Certainly, rotor changeover portion S22 shape is not unique, rotor changeover portion S22 can be linear, step with
And any of circular arc or wherein at least two kinds of combination, and then can be according to actual use demand, selection is suitable to be turned
Sub- changeover portion S22 shapes.
Second embodiment：
As shown in figure 5, the outer surface S2 of rotor core 21 cross section arranged successively by the circumference along motor 100 it is multiple
Rotor arc section S21 is formed, and is opened wide between every two adjacent rotor arc section S21 to be formed as opened magnet groove 202, at least
The one rotor arc section S21 center of circle and the center of circle of axis hole 201 is misaligned.
That is, the outer surface S2 of rotor core 21 cross section is sequentially distributed including multiple circumferences along motor 100
Multiple rotor arc section S21, be spaced apart between multiple rotor arc section S21, to be formed as unlimited magnet slot (immediate boiling magnetic
Body groove 202).Arc effect is cut to rotor 2 thus, it is possible to be better achieved, rotor 2 is coordinated with stator 1 more flat when rotating
Surely, to reduce winding mmf harmonics content, the torque pulsation of motor 100 is reduced, the vibration and noise for improving motor 100 are asked
Topic.
Preferably, as shown in figure 5, each rotor arc section S21 center of circle and the center of circle of axis hole 201 are misaligned.By
This, can reduce winding mmf harmonics content, on the premise of improving the vibration of motor 100 and noise problem, make to turn
Son 2 and being rotatably assorted for stator 1 are more steady, improve the stability of rotation of rotor 2.Certainly, can be with the invention is not restricted to this
Only one or more rotor arc section S21 center of circle and the center of circle of axis hole 201 are misaligned, to meet different use need
Ask.
Preferably, as shown in figure 5, rotor arc section S21 quantity is identical and multiple with the quantity of opened magnet groove 202
Rotor arc section S21 and circumferential cross-distribution of multiple opened magnet grooves 202 along axis hole 201.Thus, it is possible to turning magnet 22
Distribution on sub- iron core 21 is more uniform, and then in the course of work of motor 100, rotor 2 is more equal by magnetic when being rotated with stator 1
It is even, improve the job stability of motor 100.
Preferably, as shown in figure 5, multiple rotor arc section S21 size is identical, and in the circumference of axis hole 201 uniformly
Distribution.That is, multiple rotor arc section S21 radius, identical length are same, and each rotor arc section S21 center of circle with
The center of circle of axis hole 201 is misaligned.Thus, not only facilitate the processing and batch production of rotor 2, and rotor 2 can be improved
Stability of rotation.
3rd embodiment：
As shown in fig. 6,3rd embodiment is substantially the same with first embodiment, one of difference is, in the present embodiment
Rotor arc section S21 and 201 non-concentric setting of axis hole.
Specifically, the outer surface S2 of rotor core 21 corresponding with each magnetic pole cross section includes circumferential along motor 100
The rotor arc section S21 being sequentially distributed, rotor arc section S21 both ends are connected with rotor changeover portion S22, each rotor changeover portion
S22 does not fall on the basic circle of any one in two rotor arc section S21 adjacent thereto, and the rotor arc section S21 center of circle is not
Overlapped with the center of circle of axis hole 201.
That is, the outer surface S2 of rotor core 21 cross section is by multiple rotor arc section S21 and multiple rotor mistakes
A section S22 compositions are crossed, multiple rotor arc section S21 both ends are respectively connected with rotor changeover portion S22, and adjacent rotor changeover portion
It is spaced apart between S22, to be formed as opened magnet groove 202, rotor arc section S21 and 201 non-concentric setting of axis hole, and rotor mistake
A section S22 is crossed to fall where rotor arc section S21 outside basic circle.
Arc effect is cut to rotor 2 thus, it is possible to be better achieved, rotor 2 is coordinated with stator 1 more flat when rotating
Surely, to reduce winding mmf harmonics content, the torque pulsation of motor 100 is reduced, the vibration and noise for improving motor 100 are asked
Topic.
As shown in fig. 6, the part that rotor changeover portion S22 is is linear and another part is step.Thus, it is convenient
The processing and manufacture of rotor 2, and rotor 2 can be made preferably to coordinate with stator 1, and then the work for reducing motor 100 is made an uproar
Sound.
Preferably, as shown in fig. 6, multiple rotor arc section S21 size is identical, and in the circumference of axis hole 201 uniformly
Distribution.That is, multiple rotor arc section S21 radius, identical length are same, and the multiple rotor arc section S21 center of circle is equal
It is misaligned with the center of circle of axis hole 201.
Motor 100 according to embodiments of the present invention, by carrying out cutting arc simultaneously to stator core 11 and rotor core 21, make
It has less air gap flux density harmonic wave, can reduce the harmonic content of air-gap field, so as to reduce electromagnetism caused by this harmonic wave
Exciting force, and then reduce torque pulsation and the vibrating noise of motor 100.
Other of motor 100 according to embodiments of the present invention are formed and operated for those of ordinary skills
All it is known, is not detailed herein.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " illustrative examples ",
The description of " example ", " specific example " or " some examples " etc. means to combine specific features, the knot that the embodiment or example describe
Structure, material or feature are contained at least one embodiment or example of the present invention.In this manual, to above-mentioned term
Schematic representation is not necessarily referring to identical embodiment or example.Moreover, specific features, structure, material or the spy of description
Point can combine in an appropriate manner in any one or more embodiments or example.
Although an embodiment of the present invention has been shown and described, it will be understood by those skilled in the art that：Not
In the case of departing from the principle and objective of the present invention a variety of change, modification, replacement and modification can be carried out to these embodiments, this
The scope of invention is limited by claim and its equivalent.
Claims (11)
- A kind of 1. motor, it is characterised in that including：Stator, the stator include stator core and winding, formed with centre bore and around the center on the stator core Multiple stator tooths in hole, stator slot are limited between adjacent two stator tooths, the winding is set around the stator slot；Rotor, the rotor are rotatably arranged in the centre bore and including rotor core and multiple magnets, the rotor iron Multiple opened magnet grooves towards stator openings on core formed with axis hole and around the axis hole, multiple magnets are right respectively Ground inserting is answered in multiple opened magnet grooves,Wherein, the cross section of at least one stator tooth inner surface includes one section of teeth portion arc section and the teeth portion arc section The center of circle is located at the side at the remote stator core center of the stator tooth inner surface, the rotor core under each magnetic pole The cross section of outer surface includes one section of circular arc non-radiused or with the axis hole decentraction.
- 2. motor according to claim 1, it is characterised in that the cross section of each stator tooth inner surface includes one Duan Suoshu teeth portion arc sections, and the center of circle of the teeth portion arc section and the center of circle of the centre bore are misaligned.
- 3. motor according to claim 1 or 2, it is characterised in that the cross section of the stator tooth inner surface also includes：Two Individual teeth portion changeover portion, two teeth portion changeover portions are connected to the both ends of the teeth portion arc section.
- 4. motor according to claim 3, it is characterised in that the teeth portion changeover portion forms linear or step.
- 5. motor according to claim 3, it is characterised in that the teeth portion changeover portion forms arc line shaped, and the teeth portion The center of circle of changeover portion and the center of circle of the teeth portion arc section are misaligned.
- 6. motor according to claim 1, it is characterised in that the horizontal stroke of the outer surface of the rotor core under each magnetic pole Section includes：Rotor arc section, the inner surface of the rotor arc section and the multiple stator tooth are rotatably assorted；Two rotor changeover portions, two rotor changeover portions are connected to the both ends of the rotor arc section in the circumferential.
- 7. motor according to claim 6, it is characterised in that the center of circle of the rotor arc section and the center of circle of the axis hole Overlap or misaligned.
- 8. the motor according to claim 6 or 7, it is characterised in that the rotor changeover portion forms arc line shaped, and described turn The center of circle of sub- changeover portion and the center of circle of the rotor arc section are misaligned.
- 9. the motor according to claim 6 or 7, it is characterised in that the rotor changeover portion forms linear or step.
- 10. the motor according to claim 6 or 7, it is characterised in that the rotor changeover portion formed linear, step, At least two combination in circular arc.
- 11. motor according to claim 1, it is characterised in that the notch of each opened magnet groove is provided with to described Magnet carries out radially spacing stopper protrusion, and the number of the stopper protrusion of each magnet slot is two, and two described spacing Convex portion is connected on two magnetic poles for limiting the opened magnet groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711100224.XA CN107834718A (en) | 2017-11-09 | 2017-11-09 | Motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711100224.XA CN107834718A (en) | 2017-11-09 | 2017-11-09 | Motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107834718A true CN107834718A (en) | 2018-03-23 |
Family
ID=61654062
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711100224.XA Pending CN107834718A (en) | 2017-11-09 | 2017-11-09 | Motor |
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| Country | Link |
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| CN (1) | CN107834718A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111756139A (en) * | 2020-07-17 | 2020-10-09 | 珠海格力电器股份有限公司 | Rotor punching sheet, rotor core, rotor and motor |
| CN112335154A (en) * | 2018-06-27 | 2021-02-05 | 三菱电机株式会社 | Motor, compressor, blower, and refrigeration and air-conditioning apparatus |
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| US20030107290A1 (en) * | 2000-04-28 | 2003-06-12 | Pietro De Filippis | Brushless motor |
| CN104300712A (en) * | 2013-07-17 | 2015-01-21 | 三星电子株式会社 | Motor |
| CN105186816A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Stator and rotor combined structure |
| CN107171463A (en) * | 2017-06-30 | 2017-09-15 | 广东威灵电机制造有限公司 | Magneto stator punching, motor stator and injection mold |
| CN207368777U (en) * | 2017-11-09 | 2018-05-15 | 广东威灵电机制造有限公司 | Motor |
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2017
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030107290A1 (en) * | 2000-04-28 | 2003-06-12 | Pietro De Filippis | Brushless motor |
| CN104300712A (en) * | 2013-07-17 | 2015-01-21 | 三星电子株式会社 | Motor |
| CN105186816A (en) * | 2015-07-16 | 2015-12-23 | 博格思众（常州）电机电器有限公司 | Stator and rotor combined structure |
| CN107171463A (en) * | 2017-06-30 | 2017-09-15 | 广东威灵电机制造有限公司 | Magneto stator punching, motor stator and injection mold |
| CN207368777U (en) * | 2017-11-09 | 2018-05-15 | 广东威灵电机制造有限公司 | Motor |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112335154A (en) * | 2018-06-27 | 2021-02-05 | 三菱电机株式会社 | Motor, compressor, blower, and refrigeration and air-conditioning apparatus |
| CN112335154B (en) * | 2018-06-27 | 2023-04-25 | 三菱电机株式会社 | Motor, compressor, blower, and refrigerating and air-conditioning apparatus |
| CN111756139A (en) * | 2020-07-17 | 2020-10-09 | 珠海格力电器股份有限公司 | Rotor punching sheet, rotor core, rotor and motor |
| CN111756139B (en) * | 2020-07-17 | 2021-08-10 | 珠海格力电器股份有限公司 | Rotor punching sheet, rotor core, rotor and motor |
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Application publication date: 20180323 |
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