CN204992838U - Single -Phase permanent -Magnet motor - Google Patents
Single -Phase permanent -Magnet motor Download PDFInfo
- Publication number
- CN204992838U CN204992838U CN201520672910.4U CN201520672910U CN204992838U CN 204992838 U CN204992838 U CN 204992838U CN 201520672910 U CN201520672910 U CN 201520672910U CN 204992838 U CN204992838 U CN 204992838U
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- China
- Prior art keywords
- rotor
- electric machine
- poles
- earth
- permanent magnet
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Abstract
The utility model discloses a single -Phase permanent -Magnet motor, including stator core and rotationally set up the permanent magnet rotor in stator core, stator core is including tip and the polararm that is extended by the tip, the polararm includes two linking arms that link to each other with the tip and formed at the two poles of the earth claw of the end of linking arm, permanent magnet rotor sets up between the claw of the two poles of the earth, the rotor includes the rotor magnetic core and inlays two permanent magnets of locating in the rotor magnetic core, the rotor magnetic core is made by magnetic materials. The rotor magnetic core set up the magnetic field intensity who has improved the rotor, improved the power density of motor.
Description
Technical field
The utility model relates to electric machine, particularly relates to the electric machine of the rotor with plug-in permanent magnet body.
Background technology
Electric machine is made up of stator core, stator winding and p-m rotor usually.Wherein, stator core is generally U-iron core, is formed with a pair polar arm, and the end of polar arm forms a pair magnetic pole; Stator winding is wound on polar arm; P-m rotor is then arranged between the magnetic pole of iron core rotationally.Accordingly, p-m rotor comprises rotating shaft and by injected plastic and Overmolded mode is fixed on the permanent magnet in rotating shaft, described rotor magnetic core is made up of permeability magnetic material.The utility model provides a kind of novel electric machine.
Utility model content
In view of this, the utility model provides a kind of electric machine, the p-m rotor comprising stator core and be arranged at rotationally in stator core, the polar arm that described stator core includes end and extended by end, described polar arm comprises the two poles of the earth pawl of two linking arms be connected with end and the end being formed at linking arm, described p-m rotor is arranged between the pawl of the two poles of the earth, described rotor comprises rotor magnetic core and is embedded at two permanent magnets in rotor magnetic core, and described rotor magnetic core is made up of permeability magnetic material.
Compared to prior art, the permanent magnet of the rotor of the utility model motor is inserted in rotor magnetic core, improves the magnetic field intensity of rotor, increases the power density of motor.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric machine one embodiment.
Fig. 2 is the exploded view of the stator core of motor shown in Fig. 1.
Fig. 3 is the exploded view of the p-m rotor of motor shown in Fig. 1.
Fig. 4 is the vertical view of motor shown in Fig. 1.
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.
Figure 1 shows that 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.Preferably, in the present embodiment, described magnetic core 10 is generally u-shaped, and magnetic core 10 and rotor 12 are formed with a pair magnetic pole respectively, and interaction drive rotor 12 rotates.In diagram, 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.
Described magnetic core 10 is by soft magnetic material, and such as ferromagnetic material is made.Please refer to Fig. 2 and Fig. 4, described magnetic core 10 comprises end 14 and by the vertical outwardly directed polar arm 16 in described end 14.In the present embodiment, described end 14 and polar arm 16 are shaping to be respectively connected by the mode be mechanically connected afterwards, facilitates the winding of winding.Described end 14 is formed with draw-in groove 18, and described polar arm 16 is outwardly is accordingly formed with fixture block 20, and described fixture block 20 snaps in vertically in corresponding draw-in groove 18 and polar arm 16 and end 14 are connected to form magnetic core 10.Preferably, described draw-in groove 18 and fixture block 20 form dove-tail form buckle and are connected, and avoid connecting rear disengagement.In other embodiments, described draw-in groove 18 also can be formed on polar arm 16, and correspondingly described fixture block 20 is formed on end 14, is similarly connected to form described magnetic core 10 by snap.
Preferably, described end 14 and polar arm 16, respectively by some thin slices, form as silicon steel sheet etc. is stacking.Only schematically show in diagram end 14, polar arm 16 stacking shaping after monnolithic case, do not show the concrete structure of multiple-level stack.For convenience of the assembling of thin slice, on each thin slice, can form pilot hole 22 all accordingly, pilot hole 22 described in the present embodiment be recessed blind hole, and male-female engagement between the blind hole that thin slice is adjacent when stacking buckle connect, and form end 14 and polar arm 16.
In the present embodiment, described polar arm 16 comprises two linking arms 24 and is formed at the two poles of the earth pawl 26 of end of two linking arms 24 respectively.Described two linking arm 24 parallel interval arrange, each linking arm 24 towards end 14 the outwardly formation one of end face described in fixture block 20.Described end 14 entirety, in rectangular-shaped, form described draw-in groove 18 respectively at the two ends of its side direction, is connected with fixture block 20 buckle of two linking arms 24.Described the two poles of the earth pawl 26 is away from end 14, as a pair magnetic pole of stator core 10, polarized after winding energising, thus the two poles of the earth pawl 26 has contrary polarity.Space 28 is formed, for holding rotor 12 between the two poles of the earth pawl 26.
In the present embodiment, two ends of the circumference of each pole pawl 26 are horizontal relative to linking arm 24 protruding and be connected with circumference two end of another pole pawl 26 respectively, thus the two poles of the earth pawl 26 is interconnected in the circumferential and is integrated, space 28 is closed in the circumferential, runs through magnetic core 10 in the axial direction.Described the two poles of the earth pawl 26 ambient 28 forms polar arc face 30, and described polar arc face 30 is continuous in the circumferential, and surrounding rotor 12 also and between rotor 12 forms continuous print air gap, effectively reduces cogging torque, makes the running of rotor 12 more steady, reduces the noise of motor.Preferably, described polar arc face 30 is the face of cylinder of roughly standard, and itself and rotor 12 are coaxially arranged, radial distance constant between the two, forms basic uniform air gap, avoids the generation of noise to the full extent.
Be integrated because the two poles of the earth pawl 26 is interconnected in the circumferential, the part that its relative linking arm 24 crosses out forms two wall parts 32,34 between two linking arms 24, itself and two linking arms 24 and end 14 join end to end, and form the magnetic circuit without rotor 12, can form leakage field to a certain extent.For reducing leakage field, form magnetic bridge 36 in the central authorities of each wall portion 32,34, the radial thickness of described magnetic bridge 36 is less than other position of wall portion 32,34 to reduce leakage field.Preferably, groove 38 is established in the position of the corresponding magnetic bridge 36 of outside wall surface of described wall portion 32,34, to reduce the thickness of magnetic bridge 36 position as far as possible.Described groove 38 extends vertically, can be single or multiple, and shape can be circular arc, square etc.
Preferably, described polar arc face 30 indent forms two and starts groove 40, and described two start groove 40 180 degree, interval in the circumferential, all depart from the central shaft X certain angle (as shown in Figure 4) of pole pawl 26.In described startup groove 32 position, air gap between the polar arc face 30 of pole pawl 26 and rotor 12 increases, and makes motor when power-off shuts down, and the pole axis of rotor 12 departs from the central shaft X certain angle of pole pawl 26, namely avoiding dead-centre position, guaranteeing that motor can start smoothly when being again energized.Therefore, form basic even air gap between stators and rotators alleged by the utility model, refer to that the part except correspondence startup groove forms basic uniform air gap.In the present embodiment, between described two startup grooves 40 and the central shaft X of pole pawl 26, form larger angle, mutually close with a magnetic bridge 36 respectively.
Please refer to Fig. 3 and Fig. 4, described p-m rotor 12 comprises by the stacking magnetic cores 42 such as silicon steel sheet and two permanent magnets 44 being embedded in magnetic core 42, described two permanent magnet 44 polarity are contrary, iron core 42 is polarized formation a pair magnetic pole, acts on drive rotor 12 rotate with stator core 10.What deserves to be explained is, alleged by the utility model, magnetic core is made up of soft magnetic material, is such as fabricated from iron, but its material is not limited to iron.
Described rotor magnetic core 42 can form by multiple silicon steel sheet is stacking, overall in cylindric, and its central authorities form axis hole 46.Described axis hole 46 for fixedly wearing rotating shaft, to connect load and to drive it to operate.In the both sides of described axis hole 46, iron core 42 is also formed with two axial through bore 48 symmetrically, and for being embedded permanent magnet 44, size, the shape of described perforation 48 are corresponding with permanent magnet 44.In the present embodiment, described two permanent magnets 44 are in flat rectangular body shape, and it has less thickness diametrically, but has larger width on tangential.Two permanent magnets 44 radially magnetize, and parallel interval is arranged, all near the outside wall surface of iron core 42.
In the present embodiment, the outside wall surface of described iron core 42 relative to the central shaft structure axisymmetricly of rotor 12, the plane 52 comprising two symmetrically arranged arc surfaces 50 and be connected between two arc surfaces 50.Described two arc surfaces 50 are as the polar arc face of rotor 12, and described two planes 52 may be used for the location of following process, assembling etc.The corresponding permanent magnet 44 of each arc surface 50, and cover corresponding permanent magnet 44 in the circumferential completely.
According to above-described embodiment of the present utility model, the permanent magnet 44 of rotor 12 inserts in magnetic core 42, effectively can improve the magnetic field intensity of rotor, increases the power density of motor.On the other hand, the two poles of the earth pawl 26 of stator core 10 is interconnected and is integrated, and forms continuous print polar arc face 30 in the circumferential, avoids generation cogging torque to greatest extent; P-m rotor 12 is consisted of the embedded permanent magnet 44 of iron core 42, and magnetic core 42 polarization forms the two poles of the earth cambered surface 50 close to 180 degree of central angles; Rotor 12 like this can be close to and operate reposefully after loading stator core 10, effectively reduces the generation of noise.In addition, although the pole pawl 26 of stator core connects as one, form magnetic bridge 36 in the central authorities of wall portion 32,34, the radial thickness of described magnetic bridge 36 is less than other position of wall portion 32,34, reduction leakage field, the efficiency of guarantee motor, makes the utility model electric machine efficient and noise is little.
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 (8)
1. an electric machine, the p-m rotor comprising stator core and be arranged at rotationally in stator core, the polar arm that described stator core includes end and extended by end, described polar arm comprises the two poles of the earth pawl of two linking arms be connected with end and the end being formed at linking arm, described p-m rotor is arranged between the pawl of the two poles of the earth, it is characterized in that, described rotor comprises rotor magnetic core and is embedded at the multiple permanent magnets in rotor magnetic core, and described rotor magnetic core is made up of permeability magnetic material.
2. electric machine as claimed in claim 1, is characterized in that, described permanent magnet is flat rectangular-shaped, and the thickness of permanent magnet on rotor radial is less than at rotor cutting width upwards.
3. electric machine as claimed in claim 1, it is characterized in that, permanent magnet is two, and described two permanent magnet parallel interval are arranged.
4. electric machine as claimed in claim 3, is characterized in that, the corresponding described permanent magnet of outside wall surface of described rotor magnetic core forms the two poles of the earth cambered surface, and the outside wall surface of described rotor magnetic core also comprises the plane between two ends being connected to the two poles of the earth cambered surface.
5. electric machine as claimed in claim 1, it is characterized in that, described connected the two poles of the earth pawl is formed with wall portion between two linking arms, and the central authorities of described wall portion form magnetic bridge, and described wall portion has smallest radial thickness in magnetic bridge position.
6. electric machine as claimed in claim 5, is characterized in that, the outside wall surface of described magnetic bridge is formed with the groove extended vertically.
7. electric machine as claimed in claim 1, is characterized in that, the inner surface indent of the pole pawl of described stator core forms two and starts groove, and described two startup grooves depart from the central shaft of pole pawl, and two start 180 degree, groove intervals in the circumferential.
8. the electric machine as described in any one of claim 1-7, it is characterized in that, described end and polar arm are connected by the stacking also machinery that forms of some thin slices respectively, the linking arm of described polar arm and end one of them be formed with draw-in groove, wherein another is formed with fixture block, and described fixture block is arranged in draw-in groove and is connected with end by polar arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672910.4U CN204992838U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520672910.4U CN204992838U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992838U true CN204992838U (en) | 2016-01-20 |
Family
ID=55127163
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520672910.4U Expired - Fee Related CN204992838U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992838U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106253508A (en) * | 2016-07-14 | 2016-12-21 | 璧垫旦 | A kind of angular vibration exciting device |
| CN106487132A (en) * | 2015-09-01 | 2017-03-08 | 德昌电机(深圳)有限公司 | Electric machine |
| CN107026524A (en) * | 2016-02-01 | 2017-08-08 | 德昌电机(深圳)有限公司 | Monophase machine and its rotor |
| CN107240971A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
-
2015
- 2015-09-01 CN CN201520672910.4U patent/CN204992838U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487132A (en) * | 2015-09-01 | 2017-03-08 | 德昌电机(深圳)有限公司 | Electric machine |
| CN107026524A (en) * | 2016-02-01 | 2017-08-08 | 德昌电机(深圳)有限公司 | Monophase machine and its rotor |
| CN107240971A (en) * | 2016-03-28 | 2017-10-10 | 德昌电机(深圳)有限公司 | motor and its stator |
| CN106253508A (en) * | 2016-07-14 | 2016-12-21 | 璧垫旦 | A kind of angular vibration exciting device |
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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 |
Granted publication date: 20160120 Termination date: 20210901 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |