CN205647057U - Single -Phase permanent -Magnet motor and stator core thereof - Google Patents
Single -Phase permanent -Magnet motor and stator core thereof Download PDFInfo
- Publication number
- CN205647057U CN205647057U CN201620032388.8U CN201620032388U CN205647057U CN 205647057 U CN205647057 U CN 205647057U CN 201620032388 U CN201620032388 U CN 201620032388U CN 205647057 U CN205647057 U CN 205647057U
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- polar
- polar arm
- stator core
- arm
- opening
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Abstract
The utility model provides a single -Phase permanent -Magnet motor and stator core thereof, wherein single -Phase permanent -Magnet motor includes stator core, twine winding and the rotatory permanent magnet rotor of stator relatively on stator core, it includes tip and the polararm that is stretched out by the tip to plant stator core, the polararm includes at the first polararm of the photogenic superpose of axial and second polararm, first polararm includes two first ploe claws, two first ploe claws separate the first opening of formation each other, two second polararms include two second ploe claws, two second ploe claws separate formation second opening each other, second open -ended width is less than first open -ended width. Because first opening and the changed width of second opening utensil, the less second opening of width can effectively reduce the tooth's socket torque of motor to reduce the noise of motor.
Description
Technical field
This utility model relates to monophase machine, particularly relates to the stator core of electric machine.
Background technology
Electric machine is generally made up of stator core, stator winding and p-m rotor.Wherein,
Stator core is substantially u-shaped, and including two spaced polar arms, the end of each polar arm forms a pole
Pawl, the inwall concave shaped poling cambered surface of each pole pawl, described winding is i.e. wound on polar arm, described rotor
Then it is arranged between the pawl of the two poles of the earth, relative with polar arc face.The polar arm of the stator core of this kind of motor separates and sets
Putting, be formed with bigger breach between the pawl of the two poles of the earth, described breach makes to be formed between stator and rotor bigger
Cogging torque, the operation causing motor is unstable, produce noise.
Utility model content
In view of this, this utility model provides a kind of electric machine and stator core thereof, can effectively carry
The stability of lifting motor operating, reduces the generation of noise.
On the one hand, this utility model provides a kind of stator core, including end and the pole stretched out by end
Arm, it is characterised in that described polar arm includes the first polar arm and the second polar arm being stacked mutually, institute
State the first polar arm and include two first pole pawls, described two first pole pawl spaced formation the first opening, described
Two second polar arms include two second pole pawls, and described two second pole pawl spaced formation the second opening is described
The width of the second opening is less than the width of the first opening.
It is also preferred that the left described first polar arm also includes that be connected between two first pole pawls and end two connect
Connect arm, the described two first spaced settings of linking arm, the width of described first opening and described two first
Between linking arm spaced apart quite.
It is also preferred that the left each second pole pawl stretches out, towards another the second pole pawl, the wall portion that is formed with, described two second
Between the wall portion that pole pawl is corresponding, interval forms described second opening.
It is also preferred that the left described second polar arm is two, the first polar arm is one, and the first polar arm is folded in two
Between two polar arms.
It is also preferred that the left described first polar arm is two, the second polar arm is one, and the second polar arm is folded in two
Between one polar arm.
It is also preferred that the left described first polar arm, the second polar arm are multiple, the first polar arm and the second polar arm are along axle
To being alternately stacked.
It is also preferred that the left described end, the first polar arm, the second polar arm are formed and machine by some thin slices stacking respectively
Tool is connected.
It is also preferred that the left described first polar arm and end one of them be formed with draw-in groove, wherein another is formed
Fixture block；Described second polar arm and end one of them be formed with draw-in groove, wherein another is formed with fixture block；
First polar arm, the second polar arm and end are connected in being arranged in corresponding draw-in groove respectively by described fixture block.
It is also preferred that the left the inner surface indent of described pole pawl forms two startup grooves, described startup groove deviation pole pawl
Central shaft.
On the other hand, this utility model provides a kind of electric machine, including stator core, is wound in
Winding on stator core and can the p-m rotor that rotates of relative stator, described rotor is arranged at the two poles of the earth
Space in pawl, the pole pawl surrounding rotor of described stator core also forms air gap with rotor.
It is also preferred that the left the width of described second opening is less than 4 times of the width of the air gap between stator and rotor.
Compared to prior art, the first pole pawl of the stator core of this utility model motor and the second pole pawl
Being respectively formed with the first opening and the second opening, the width of described second opening is less than the width of the first opening
Degree, makes the efficiency of motor and two important performance indexes of noise be weighed, the globality of lifting motor
Energy.
Accompanying drawing explanation
Fig. 1 is the structural representation of this utility model electric machine one embodiment.
Fig. 2 is the explosive view of motor shown in Fig. 1.
Fig. 3 is the top view of motor shown in Fig. 1.
Fig. 4 is the upward view of motor shown in Fig. 1.
Fig. 5 is the schematic diagram of another embodiment of the magnetic core of this utility model electric machine.
Fig. 6 is the schematic diagram of the another embodiment of the magnetic core of this utility model electric machine.
Detailed description of the invention
Below in conjunction with the accompanying drawings, by detailed description of the invention of the present utility model is described in detail, this reality will be made
Apparent by novel technical scheme and other beneficial effects.Be appreciated that accompanying drawing only provide with reference to
Use is described, is not used for this utility model is any limitation as.In accompanying drawing display size be only for ease of
Clear description, and do not limit proportionate relationship.
Fig. 1-2 show the structural representation of the electric machine according to this utility model one embodiment, institute
State motor include stator core 10, the winding (not shown) that is wound on magnetic core 10 and setting rotationally
The p-m rotor 12 being placed in magnetic core 10.In diagram, for clearly showing that the stator magnet of this utility model motor
The structure of core 10 and feature, the subelement of motor, such as winding, control the circuit of winding current, motor
Shell etc. do not show that, it can be the corresponding construction in existing electric machine.Described permanent magnetism turns
Can fix in son 12 and wear a rotating shaft, for being connected with load, during winding energising, magnetic core 10 is polarized, with
The action of a magnetic field of p-m rotor 12 promotes p-m rotor 12 to rotate, and then drives loaded work piece.
Described magnetic core 10, by soft magnetic materials, is made such as ferromagnetic material etc..It is preferred that in the present embodiment, institute
Stating magnetic core 10 is U-shaped magnetic core, including end 14 and by the vertical outwardly directed polar arm in described end 14
16.In the present embodiment, described polar arm 16 is at least made up of the first polar arm 18 and the second polar arm 20.Its
In, described first polar arm the 18, second polar arm 20 is stacked in the axial direction of rotor 12, and is connected to end
The same side of 14.In the present embodiment, the molding respectively of described end the 14, first polar arm the 18, second polar arm 20
Being connected by the way of mechanical connection afterwards, such first polar arm the 18, second polar arm 20 can be in winding winding
It is connected with end 14 again after completing so that the winding of winding is more convenient, quick.
It is preferred that described end the 14, first polar arm the 18, second polar arm 20 is respectively by some thin slices, such as silicon
The stacking such as steel disc forms.In diagram, being diagrammatically only by property illustrates end the 14, first polar arm the 18, second polar arm 20 heap
Build up the monnolithic case after type, do not show the concrete structure of multiple-level stack.For convenience of the assembling of thin slice,
Can all be correspondingly formed pilot hole 22 on each thin slice, pilot hole 22 described in the present embodiment is recessed
Blind hole, thin slice male-female engagement snapping connection between adjacent blind hole when stacking, form described end respectively
Portion's the 14, first polar arm 18 and the second polar arm 20.
In the present embodiment, described end 14 is respectively formed with draw-in groove 24, institute in the position near its two side ends
State draw-in groove 24 and run through described end 14 in the axial direction.Described polar arm 16, including the first polar arm 18 and the second pole
Arm 20, is formed with the fixture block 26 of corresponding described draw-in groove 24.Described fixture block 26 will in snapping in draw-in groove 24 vertically
Polar arm 16 is connected with end 14, i.e. forms described magnetic core 10.It is preferred that described draw-in groove 24 and fixture block 26 shape
Dove-tail form is become to snap connection, it is to avoid to disengage after connection.In other embodiments, described draw-in groove 24 can also
Being formed on first polar arm the 18, second polar arm 20, the most described fixture block 26 is formed on end 14, with
Three is connected by snap and forms described magnetic core 10 by sample ground.
Described first polar arm 18 includes two independent arms 28, and described two arm 28 structures are essentially identical, phase
The most parallel and interval is arranged.Each arm 28 is all in strip, including the first linking arm 30 and be formed at
First pole pawl 32 of one end of one linking arm 30, described first pole pawl 32 is away from end 14.Described first
Linking arm 30 is towards the end face described fixture block of outwardly formation 26 of another end of end 14, with end 14
Draw-in groove 24 connect.Relatively and interval is arranged first pole pawl 32 of described two arms 28, and jointly defines receipts
Hold the space of rotor 12.Described two first pole pawls 32 internal face depression in opposite directions forms the first polar arc face 34,
Corresponding with the outer surface of rotor 12 and separately, form air gap.
Owing to two first pole pawls 32 of the first polar arm 18 are separately positioned, the space from end shape of two first pole pawls 32
Become the first opening 33, thus the first polar arc face 34 is arranged in disconnecting in the circumferential, the width disconnected, i.e.
The width at the interval between width and first linking arm 30 of the first opening 33 is suitable.Due to the first polar arc face
34 width disconnecting in the circumferential and disconnecting are relatively big, on the one hand form bigger magnetic resistance at open position,
Avoid leakage field, thus ensure the efficiency of motor；But at open position, on the other hand form bigger tooth
Groove torque, affects the rotation of rotor 12, causes the generation of noise.
It is preferred that set the startup groove 36 of indent on described first polar arc face 34, described startup groove 36 deviates
Central shaft X (as shown in Figure 3) certain angle of one pole pawl 32.In the present embodiment, described startup groove 36 is
Two, it is symmetric end by each first pole pawl 32 respectively about the central shaft of rotor 12, the farthest
From one end of the first linking arm 30, circumferentially extend internally, and the degree of depth is gradually increased.Owing to arranging startup
Groove 36, forms non-uniform gap, so that motor stops in power-off between the first polar arc face 34 and rotor 12
When only operating, the pole axis (i.e. through the axis at two rotor magnetic pole centers) of rotor 12 deviates the first pole pawl 32
Central shaft X certain angle, i.e. avoid dead-centre position, it is ensured that motor can open smoothly when being once again powered up
Dynamic.
Described second polar arm 20 also includes two independent arms 38, and described two arm 38 structures are essentially identical,
It is parallel to each other and is spaced setting.Each arm 38 is all in strip, including the second linking arm 40 and be formed at
Second pole pawl 42 of one end of the second linking arm 40, described second pole pawl 42 is away from end 14.Described
Two linking arms 40 are towards the end face described fixture block of outwardly formation 26 of another end of end 14, with end
The draw-in groove 24 of 14 connects.Relatively and interval is arranged second pole pawl 42 of described two arms 38, and jointly defines
House the space of rotor 12.Described two second pole pawls 42 internal face depression in opposite directions forms the second polar arc face
44, corresponding with the outer surface of rotor 12 and separately, form air gap.
In the present embodiment, each second pole pawl 44 is generally c-shaped, and the both sides of its circumference connect relative to second
Arm 40 extends transversely outward inside and outside two the wall portions 46,48 that are formed with, and described wall portion 46,48 is relative to end
Portion 14 is almost parallel, at corresponding interval between two second linking arms 40.It is preferred that described wall portion
46,48 length stretched out are less than the half of the width at the interval between two second linking arms 40.So arm
38 after assembly: two inner wall parts 46 of two second pole pawls 34 are oppositely arranged, and forms one second and open between end
Mouth 47；Two outside wall portions 48 are oppositely arranged, and form one second opening 49 between end.Described two openings 47,
The position of 49 just central authorities to the interval of two second linking arms 40, width is much smaller than between the second linking arm 40
The width at interval, namely the width of the first opening 33.
Owing to two second pole pawls 42 of the second polar arm 20 are separately positioned, the second polar arc face 44 is in the circumferential in disconnected
Offer and put.Further, since the both sides of the second pole pawl 42 form wall portion 46,48, therefore the second polar arc face 44
The width disconnected in the circumferential, i.e. opening 47,49 width in the circumferential, much smaller than the second linking arm 40
Between interval.So, although the second polar arc face 44 disconnects in the circumferential, but the width disconnected is little,
While avoiding leakage field, reduce the cogging torque of motor, it is ensured that the smooth rotation of rotor 12.
It is preferred that the width that described second polar arc face 44 disconnects in the circumferential less than the second polar arc face 44 and turns
4 times of width of the air gap between son 12, less than 2 times of width of air gap more preferably.It addition, said two
Opening 47,49 can have different width, say, that the second polar arc face 44 not coordination in the circumferential
Put and can disconnect different width.In the present embodiment, the minimum widith that the second polar arc face 44 disconnects is about the
2 times of the width of the air gap between two polar arc faces 44 and rotor 12, drop while reducing leakage field as far as possible as far as possible
Low gullet torque.
Please refer to Fig. 3 and Fig. 4, in the axial direction of rotor 12, described first polar arm 18 and the second polar arm
20 phases are stacked, and each of which the first linking arm 30 is stacked with one second linking arm 40, respectively constitutes polar arm 16
A linking arm.In the present embodiment, two linking arm parallel interval of polar arm 16 are arranged, and are formed between the two
Winding space.Described winding is wound on described two linking arms, and usual two windings are in series.Described two
One pole pawl 32 is stacked with one second pole pawl 42 respectively, is collectively forming the pole pawl of polar arm 16, is used for and rotor 12
Effect.Described first polar arc face 34 is substantially in the form of coaxial setting with the second polar arc face 44, and diameter is suitable,
Collectively form the polar arc face of polar arm 16.Described polar arc face is the most cylindrical, surrounding rotor 12, and with turn
Son 12 forms air gap.
In the axial direction, the position that the first polar arc face 34 disconnects in the circumferential just to the second polar arc face 44 in circumference
The position of upper disconnection, the i.e. first opening 33 just to the second opening 47,49, whole polar arc face in the circumferential in
Disconnect shape.The width disconnected due to the second polar arc face 44 is less than the first polar arc face 44, the most whole polar arc face
Fracture the most stepped, there is the width of change.Specifically, the fracture pair in described polar arc face
The partial width answering the first polar arc face 26 is relatively big, and the width at the interval between winding section is suitable；Corresponding the
The partial width in two polar arc faces 36 is less, much smaller than the interval between winding section.So so that at least portion
The width that split pole cambered surface disconnects in the circumferential significantly reduces, and while having substantially no effect on motor impact, has
Effect reduces the noise of motor, the overall performance of lifting motor.
It addition, described polar arc face starts groove 36 position in correspondence, form non-homogeneous air gap with rotor 12,
Start the position of groove 36 in non-corresponding, form even air gap with rotor 12.Above-described embodiment starts groove
36 are only formed on the first polar arc face 34, in some embodiments, it is also possible to startup groove is formed at second
On polar arc face 44, or on first, second polar arc face 34,44, form startup groove 36 simultaneously.It is appreciated that
Ground, according to motor being started the different requirements in direction, can be with the corresponding drive circuit of matching design.Separately
Outward, arranging of described startup groove 36 can do corresponding change, not as required in length, the degree of depth
It is limited with concrete structure shown in the present embodiment.
In above-described embodiment, single first polar arm 18 is used to match with single second polar arm 20 composition magnetic core
10, in other embodiments, both can also have other fit system: as it is shown in figure 5, can be single
First polar arm 18 matches with two the second polar arms 20, the first polar arm 18 is folded in two second polar arms 20 it
Between；Or as shown in Figure 6, it is also possible to be that single second polar arm 20 matches with two the first polar arms 18, will
Second polar arm 20 is folded between two first polar arms 18；Again or, it is also possible to be multiple first polar arm 18 with
Multiple second polar arms 20 are alternately stacked.
The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicality
Type, all any amendment, equivalent and improvement made within spirit of the present utility model and principle
Deng, within should be included in protection domain of the present utility model.
Claims (11)
1. a stator core, including end and the polar arm that stretched out by end, it is characterized in that, described polar arm includes the first polar arm and the second polar arm being stacked mutually, described first polar arm includes two first pole pawls, described two first pole pawl spaced formation the first opening, and described second polar arm includes two second pole pawls, described two second pole pawl spaced formation the second opening, the width of described second opening is less than the width of the first opening.
2. stator core as claimed in claim 1, it is characterized in that, described first polar arm also includes two first linking arms being connected between two first pole pawls and end, the described two first spaced settings of linking arm, between width and described two first linking arms of described first opening spaced apart quite.
3. stator core as claimed in claim 1, it is characterised in that each second pole pawl stretches out, towards another the second pole pawl, the wall portion that is formed with, and between the wall portion that described two second pole pawls are corresponding, interval forms described second opening.
4. stator core as claimed in claim 1, it is characterised in that described second polar arm is two, and the first polar arm is, and the first polar arm is folded between two second polar arms.
5. stator core as claimed in claim 1, it is characterised in that described first polar arm is two, and the second polar arm is, and the second polar arm is folded between two first polar arms.
6. stator core as claimed in claim 1, it is characterised in that described first polar arm, the second polar arm are multiple, and the first polar arm and the second polar arm are the most alternately stacked.
7. stator core as claimed in claim 1, it is characterised in that described end, the first polar arm, the second polar arm are formed by some thin slices stacking and are mechanically coupled respectively.
8. stator core as claimed in claim 1, it is characterised in that described first polar arm and end one of them be formed with draw-in groove, wherein another is formed with fixture block；Described second polar arm and end one of them be formed with draw-in groove, wherein another is formed with fixture block；First polar arm, the second polar arm and end are connected in being arranged in corresponding draw-in groove respectively by described fixture block.
9. the stator core as described in any one of claim 1-8, it is characterised in that the inner surface indent of described pole pawl forms two startup grooves, the central shaft of described startup groove deviation pole pawl.
10. an electric machine, the winding that including stator core, is wound on stator core and can the p-m rotor that rotates of relative stator, it is characterized in that, described stator core is the stator core described in any one of claim 1-9, described rotor is arranged at the space in the pawl of the two poles of the earth, and the pole pawl surrounding rotor of described stator core also forms air gap with rotor.
11. electric machine as claimed in claim 10, it is characterised in that the width of described second opening is less than 4 times of the width of the air gap between stator and rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032388.8U CN205647057U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620032388.8U CN205647057U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
| CN201520674767.2U CN205231871U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520674767.2U Division CN205231871U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205647057U true CN205647057U (en) | 2016-10-12 |
Family
ID=55906914
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520674767.2U Expired - Fee Related CN205231871U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
| CN201620032388.8U Expired - Fee Related CN205647057U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520674767.2U Expired - Fee Related CN205231871U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN205231871U (en) |
-
2015
- 2015-09-01 CN CN201520674767.2U patent/CN205231871U/en not_active Expired - Fee Related
- 2015-09-01 CN CN201620032388.8U patent/CN205647057U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN205231871U (en) | 2016-05-11 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161012 |