CN205231870U - Single -Phase permanent -Magnet motor and stator core thereof - Google Patents
Single -Phase permanent -Magnet motor and stator core thereof Download PDFInfo
- Publication number
- CN205231870U CN205231870U CN201520672909.1U CN201520672909U CN205231870U CN 205231870 U CN205231870 U CN 205231870U CN 201520672909 U CN201520672909 U CN 201520672909U CN 205231870 U CN205231870 U CN 205231870U
- Authority
- CN
- China
- Prior art keywords
- polar
- arm
- stator core
- polar arm
- pole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model discloses 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, stator core includes tip and the polararm that is stretched out by the tip, the polararm includes two linking arms that the interval set up and respectively formed at the utmost point claw of the end of each linking arm, it holds to form the space in the claw of the two poles of the earth the rotor, utmost point claw encircles the space forms the polar arc face, the facial branch of polar arc is upwards continuous and the part was upwards broken off in week in week, and position and the interval between the linking arm that the polar arc face breaks off are corresponding.
Description
Technical field
The utility model relates to monophase machine, particularly relates to the stator core of electric machine.
Background technology
Electric machine is made up of stator core, stator winding and p-m rotor usually.Wherein, stator core roughly takes the shape of the letter U, and comprises 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, and namely described winding is wound on polar arm, described rotor is then 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 is separated and arranges, and be formed with larger breach between the pawl of the two poles of the earth, described breach makes to form larger cogging torque between stators and rotators, causes the operation of motor not steady, produces noise.
Utility model content
In view of this, the utility model provides a kind of electric machine and stator core thereof, can the stability of effective lifting motor running, reduces the generation of noise.
On the one hand, the utility model provides a kind of stator core, the polar arm comprising end and stretched out by end, described polar arm comprises spaced two linking arms and is formed at the pole pawl of end of each linking arm respectively, space is formed for holding rotor in the pawl of described the two poles of the earth, described pole dog collar forms polar arc face around described space, described polar arc face portion in the circumferential continuously and part disconnect in the circumferential.
Preferably, the position that disconnects, described polar arc face is between two linking arms.
Preferably, between the width disconnected and linking arm, the distance at interval is suitable.
Preferably, described polar arm comprises the first polar arm and the second polar arm that are stacked vertically, described first polar arm comprises first linking arm at two intervals and is formed at the first pole pawl of end of the first linking arm respectively, described second polar arm comprises second linking arm at two intervals and is formed at the second pole pawl of end of the second linking arm respectively, described two first the two poles of the earth pawls are separated from each other, described two second pole pawls are interconnected, each second pole pawl and one first pole pawl are stacked the pole pawl jointly forming polar arm, described first pole pawl, the internal face of the second pole pawl forms the polar arc face of polar arm jointly, the part of the corresponding first pole pawl in described polar arc face disconnects in the circumferential, the part of corresponding second pole pawl is continuous in the circumferential.
Preferably, it comprises the first polar arm described in one and two described second polar arms, and described first polar arm is folded between two second polar arms.
Preferably, it comprises two described first polar arms is two and described second polar arm, and the second polar arm is folded between two first polar arms.
Preferably, described first polar arm, the second polar arm are multiple, and the first polar arm and the second polar arm are alternately stacked vertically.
Preferably, described end, the first polar arm, the second polar arm are connected by the stacking also machinery that forms of some thin slices respectively.
Preferably, 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; Described fixture block is arranged in respectively in corresponding draw-in groove and is connected in the first polar arm, the second polar arm and end.
Preferably, described polar arc face indent forms two and starts groove, and described startup groove departs from the central shaft of pole pawl.
Preferably, the shape of described first polar arm and the second polar arm or structure different.
Again on the one hand, the utility model provides a kind of electric machine, comprise said stator magnetic core, be wound in winding on stator core and can the p-m rotor that rotates of relative stator, described rotor is arranged at the space in the pawl of the two poles of the earth, and the polar arc face surrounding rotor of described stator core also forms air gap with rotor.
Compared to prior art, the polar arc face portion of the stator core of the utility model motor in the circumferential continuously and part disconnect in the circumferential, the efficiency of motor and noise two important performance indexes are weighed, the overall performance of lifting motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric machine one embodiment.
Fig. 2 is the explosive view of motor shown in Fig. 1.
Fig. 3 is the vertical 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 the utility model electric machine.
Fig. 6 is the schematic diagram of an embodiment again of the magnetic core of the utility model electric machine.
Embodiment
Below in conjunction with accompanying drawing, by describing in detail embodiment of the present utility model, will make the technical solution of the utility model and other beneficial effects apparent.Be appreciated that accompanying drawing only provides reference and explanation use, be not used for being limited the utility model.The size shown in accompanying drawing is only for ease of clear description, and does not limit proportionate relationship.
Fig. 1-2 is depicted as the structural representation of the electric machine according to the utility model one embodiment, the p-m rotor 12 that described motor comprises stator core 10, is wound in the winding (not shown) on magnetic core 10 and is arranged at rotationally in magnetic core 10.In diagram, be structure and the feature of the stator core 10 of clear display the utility model motor, the subelement of motor, as not shown in winding, the circuit of controlled winding electric current, the shell of motor etc., it can be the corresponding construction in existing electric machine.Can fixedly wear a rotating shaft in described p-m rotor 12, for being connected with load, during winding energising, magnetic core 10 is polarized, promotes p-m rotor 12 rotate with the magnetic fields of p-m rotor 12, and then drives loaded work piece.
Described magnetic core 10 is made up of soft magnetic material, such as iron etc.Preferably, in the present embodiment, described magnetic core 10 is U-shaped magnetic core, comprises end 14 and by the vertical outwardly directed polar arm 16 in described end 14.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.Wherein, described first polar arm 18, second polar arm 20 being axially stacked at rotor 12, and be connected to the same side of end 14.In the present embodiment, described end 14, first polar arm 18, the second polar arm 20 respectively shaping rear mode by mechanical connection is connected, first polar arm 18, second polar arm 20 like this can be connected with end 14 after winding winding completes again, and makes the winding of winding more convenient, quick.
Preferably, described end 14, first polar arm 18, second polar arm 20, respectively by some thin slices, as stackingly in silicon steel sheet etc. to form.Only schematically show in diagram end 14, first polar arm 18, second polar arm 20 stacking shaping after monnolithic case, do not show the concrete structure of multiple-level stack.For convenience of the assembling of thin slice, pilot hole 22 can be formed all accordingly on each thin slice, pilot hole 22 described in the present embodiment is recessed blind hole, male-female engagement between the blind hole that thin slice is adjacent when stacking buckle connect, and form described end 14, first polar arm 18 and the second polar arm 20 respectively.
In the present embodiment, described end 14 is formed with draw-in groove 24 respectively in the position near its two side ends, and described draw-in groove 24 runs through described end 14 in the axial direction.Described polar arm 16, comprises the first polar arm 18 and the second polar arm 20, is formed with the fixture block 26 of corresponding described draw-in groove 24.Described fixture block 26 snaps in vertically in draw-in groove 24 and is connected with end 14 by polar arm 16, namely forms described magnetic core 10.Preferably, described draw-in groove 24 and fixture block 26 form dove-tail form buckle and are connected, and avoid connecting rear disengagement.In other embodiments, described draw-in groove 24 also can be formed on the first polar arm 18, second polar arm 20, and correspondingly described fixture block 26 is formed on end 14, similarly by snap, three is connected to form described magnetic core 10.
Described first polar arm 18 comprises two independently arms 28, and described two arm 28 structures are substantially identical, is parallel to each other and interval is arranged.Each arm 28 is all in strip, and comprise the first linking arm 30 and be formed at the first pole pawl 32 of an end of the first linking arm 30, described first pole pawl 32 is away from end 14.Described first linking arm 30, towards the described fixture block 26 of the outwardly formation of end face of another end of end 14, is connected with the draw-in groove 24 of end 14.First pole pawl 32 of described two arms 28 relatively and interval arrange, and jointly define one for accommodating the receiving space of rotor 12.Described two first pole pawls 32 internal face is in opposite directions recessed to form the first polar arc face 34, corresponding with the outer surface of rotor 12 and separately, forms air gap.
The two first pole pawls 32 due to the first polar arm 18 are separated and arrange, and the first polar arc face 34 is arranged in disconnecting in the circumferential, and the width at the interval between the width disconnected and the first linking arm 30 is suitable.Because the first polar arc face 34 disconnects and the width disconnected is comparatively large in the circumferential, form larger magnetic resistance at open position place on the one hand, reduce leakage field, thus ensure the efficiency of motor; But form larger cogging torque at open position place on the other hand, affect the rotation of rotor 12, cause the generation of noise.
Preferably, described first polar arc face 34 is established the startup groove 36 of indent, described startup groove 36 departs from central shaft X (as shown in Figure 3) certain angle of the first pole pawl 32.In the present embodiment, described startup groove 36 is two, differs 180 degree in the circumferential, central shaft about rotor 12 is symmetric, respectively by the end of each the first pole pawl 32, namely away from one end of the first linking arm 30, circumferentially extend internally, and the degree of depth increases gradually.Groove 36 is started owing to arranging, form non-uniform gap between first polar arc face 34 and rotor 12, so make motor when power-off shuts down, the pole axis of rotor 12 departs from the central shaft X certain angle of the first pole pawl 32, namely avoiding dead-centre position, guaranteeing that motor can start smoothly when being again energized.
Described second polar arm 20 roughly takes the shape of the letter U, and comprises two second linking arms 38 and is formed at the two second pole pawls 40 of end of two second linking arms 38 respectively.Described two second linking arm 38 parallel interval are arranged, and fixture block 26 described in the outwardly formation one of end face of each the second linking arm 38, is connected with draw-in groove 24 buckle of end 14.Described two second pole pawls 40, away from end 14, are interconnected and are integrated, and form circular hole 42 in its central authorities, and for accommodating described rotor 12, the aperture of described circular hole 42 is slightly larger than the external diameter of rotor 12.In the present embodiment, described circular hole 42 runs through the second pole pawl 40 vertically, and the surrounding of circular hole 42 is then in closed.Described second pole pawl 40 is around the second polar arc face 44 of circular hole 42 forming surface to rotor 12, and described second polar arc face 44 is continuous print cambered surface in the circumferential.Preferably, the second polar arc face 44 that described two second pole pawls 40 are formed jointly forms the face of cylinder of a roughly standard, arranges with rotor 12 is coaxial and forms continuous and air gap substantially uniformly between.
The second pole pawl 40 compared to the first pole pawl 32, second polar arm 20 of the first polar arm 18 is interconnected and is integrated, between two second linking arms 38, form crossbeam 46.Described crossbeam 46, second linking arm 38 and end 14 form the magnetic circuit without rotor 12, can form leakage field to a certain extent, reduce the power density of motor.Preferably, the junction of two second pole pawls 40, the i.e. central authorities of crossbeam 46, form magnetic bridge 48, described magnetic bridge 48 has minimum thickness compared to the remainder of pole pawl 40, to increase magnetic resistance, reduces leakage field.More preferably, described magnetic bridge 48 is formed with groove 49 in its outside wall surface, and described groove 49 can be single or multiple, extends vertically and runs through magnetic bridge 48 in the axial direction.
Compared to the first pole pawl 32 of the first polar arm 18, second pole pawl 40 of the second polar arm 20 is interconnected and is integrated, after assembling with rotor 12, continuous air gap is formed between second polar arc face 44 of described second polar arm 20 and the outside wall surface of rotor 12, effective reduction cogging torque, thus the running of rotor 12 is more steady, during machine operation, noise reduces.In the present embodiment, because the second polar arc face 44 is the face of cylinder, the radial distance between itself and the outside wall surface of rotor 12 is constant, forms uniform air gap between the two, reduces cogging torque to the full extent, reduces the generation of noise.
Please refer to Fig. 3 and Fig. 4, at rotor 12 axially, described first polar arm 18 is mutually stacked with the second polar arm 20, and wherein each first linking arm 30 and one second linking arm 38 are stacked, the common linking arm forming polar arm 16.In the present embodiment, two linking arm parallel interval of polar arm 16 are arranged, and form winding space between the two.Described winding is wound on described two linking arms, and usual two windings are in series.Described two first pole pawls 32 are stacked with one second pole pawl 40 respectively, and the common pole pawl forming polar arm 16, for acting on rotor 12.Described first polar arc face 34 and the second polar arc face 44 are substantially in coaxial setting, and diameter is suitable, the common polar arc face forming polar arm 16.
For motor of the present utility model, the polar arm 16 of its magnetic core 10 is formed with the second polar arm 20 is mutually stacked by the first polar arm 18, formed polar arc face in the circumferential partial continuous and part disconnect, continuous print part i.e. the second polar arc face 44, the part i.e. first polar arc face 34 of disconnection.First polar arm 18 and the second polar arm 20 acting in conjunction like this, makes the efficiency of motor and noise two important performance indexes be weighed, the overall performance of lifting motor.。
In addition, described polar arc face forms non-homogeneous air gap in startup groove 36 position and rotor 12, forms basic even air gap in non-start up groove 36 position and rotor 12, ensures that rotor 12 can start smoothly.Starting groove 36 in above-described embodiment is only formed on the first polar arc face 34 of the first pole pawl 32, in certain embodiments, also startup groove 36 can be formed on the second polar arc face 44 of the second pole pawl 40, or on first, second polar arc face 34,44, form startup groove 36 simultaneously.Understandably, according to the different requirements in the startup direction to motor, can the corresponding drive circuit of matching design.In addition, arranging of described startup groove 36 can do corresponding change as required in length, the degree of depth, is not limited with concrete structure shown in the present embodiment.
In above-described embodiment, adopt single first polar arm 18 to match with single second polar arm 20 and form magnetic core 10, in other embodiments, both can also have other fit system: as shown in Figure 5, can be that single first polar arm 18 matches with two the second polar arms 20, the first polar arm 18 is folded between two second polar arms 20; Or as shown in Figure 6, also can be that single second polar arm 20 matches with two the first polar arms 18, the second polar arm 20 is folded between two first polar arms 18; Again or, can also be that multiple first polar arms 18 are alternately stacked with multiple second polar arm 20.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection range of the present utility model.
Claims (13)
1. a stator core, the polar arm comprising end and stretched out by end, described polar arm comprises spaced two linking arms and is formed at the pole pawl of end of each linking arm respectively, space is formed for holding rotor in the pawl of described the two poles of the earth, described pole dog collar forms polar arc face around described space, it is characterized in that, described polar arc face portion in the circumferential continuously and part disconnect in the circumferential.
2. stator core as claimed in claim 1, it is characterized in that, the position that described polar arc face disconnects is between two linking arms.
3. stator core as claimed in claim 1, it is characterized in that, between the width of described disconnection and described linking arm, the distance at interval is suitable.
4. stator core as claimed in claim 1, it is characterized in that, described polar arm comprises the first polar arm and the second polar arm that are stacked vertically, described first polar arm comprises first linking arm at two intervals and is formed at the first pole pawl of end of the first linking arm respectively, described second polar arm comprises second linking arm at two intervals and is formed at the second pole pawl of end of the second linking arm respectively, described two first the two poles of the earth pawls are separated from each other, described two second pole pawls are interconnected, each second pole pawl and one first pole pawl are stacked the pole pawl jointly forming polar arm, described first pole pawl, the internal face of the second pole pawl forms the polar arc face of polar arm jointly, the part of the corresponding first pole pawl in described polar arc face disconnects in the circumferential, the part of corresponding second pole pawl is continuous in the circumferential.
5. stator core as claimed in claim 4, it is characterized in that, comprise the first polar arm described in one and two described second polar arms, described first polar arm is folded between two second polar arms.
6. stator core as claimed in claim 4, it is characterized in that, comprising two described first polar arms is two and described second polar arm, and the second polar arm is folded between two first polar arms.
7. stator core as claimed in claim 4, it is characterized in that, described first polar arm, the second polar arm are multiple, and the first polar arm and the second polar arm are alternately stacked vertically.
8. stator core as claimed in claim 4, is characterized in that, described end, the first polar arm, the second polar arm are connected by the stacking also machinery that forms of some thin slices respectively.
9. stator core as claimed in claim 8, is characterized 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; Described fixture block is arranged in respectively in corresponding draw-in groove and is connected in the first polar arm, the second polar arm and end.
10. the stator core as described in any one of claim 1-9, is characterized in that, described polar arc face indent forms two and starts groove, and described startup groove departs from the central shaft of pole pawl.
11. stator cores as claimed in claim 4, is characterized in that, the junction between described two second pole pawls forms magnetic bridge.
12. stator cores as claimed in claim 4, is characterized in that, shape or the structure of described first polar arm and the second polar arm are different.
13. 1 kinds of electric machine, comprise stator core, be wound in winding 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 1-12, described rotor is arranged at the space in the pawl of the two poles of the earth, and the polar arc face surrounding rotor of described stator core also forms air gap with rotor.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672909.1U CN205231870U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
| CN201620032389.2U CN205647051U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672909.1U CN205231870U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620032389.2U Division CN205647051U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205231870U true CN205231870U (en) | 2016-05-11 |
Family
ID=55906913
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520672909.1U Expired - Fee Related CN205231870U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
| CN201620032389.2U Expired - Fee Related CN205647051U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620032389.2U Expired - Fee Related CN205647051U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN205231870U (en) |
-
2015
- 2015-09-01 CN CN201520672909.1U patent/CN205231870U/en not_active Expired - Fee Related
- 2015-09-01 CN CN201620032389.2U patent/CN205647051U/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN205647051U (en) | 2016-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN202840705U (en) | Stator for a direct current motor and direct current motor having the same | |
| CN106487184A (en) | Household electrical appliance, pump, electric machine and its stator core | |
| EP3506462A1 (en) | Rotary electric machine | |
| US10020717B2 (en) | Dual stator, flux switching permanent magnet machine | |
| CN103580428A (en) | Half-magnetic-sheet outer-rotor type asynchronous starting permanent-magnet synchronous motor | |
| JP2013059182A (en) | Motor manufacturing method, and motor | |
| CN204992838U (en) | Single -Phase permanent -Magnet motor | |
| EP3282560A1 (en) | Rotor and motor having rotor | |
| CN204992803U (en) | Single -Phase permanent -Magnet motor and stator core thereof | |
| CN204858923U (en) | A directly drive formula permanent magnetism AC servo motor for forging press | |
| CN204465161U (en) | A kind of single-phase transverse flux machine | |
| CN104767336A (en) | Single-phase separately-excited magneto-resistive power generator | |
| CN210957949U (en) | Inner rotor magnetic sheet structure | |
| CN205231870U (en) | Single -Phase permanent -Magnet motor and stator core thereof | |
| CN205231871U (en) | Single -Phase permanent -Magnet motor and stator core thereof | |
| CN203086308U (en) | Asynchronous starting permanent magnet synchronous motor rotor and permanent magnet motor thereof | |
| CN204992806U (en) | Single -Phase permanent -Magnet motor and stator core thereof | |
| KR102291031B1 (en) | Outer-rotor type bldc motor | |
| CN109617278A (en) | Disc type electric machine and its control method | |
| CN105762953B (en) | A kind of tandem type axial excitation switched reluctance machines | |
| CN106487188A (en) | Electric machine and its stator core | |
| CN209472454U (en) | Low rotation speed large torque outer rotor, motor and ceiling fan | |
| CN203537202U (en) | Semi-magnetic sheet outer rotor type asynchronous starting permanent-magnet synchronous motor | |
| CN209184324U (en) | Disc type electric machine | |
| CN209526642U (en) | A kind of transverse magnetic general formula motor |
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: 20160511 Termination date: 20180901 |