CN204992806U - Single -Phase permanent -Magnet motor and stator core thereof - Google Patents
Single -Phase permanent -Magnet motor and stator core thereof Download PDFInfo
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- CN204992806U CN204992806U CN201520674740.3U CN201520674740U CN204992806U CN 204992806 U CN204992806 U CN 204992806U CN 201520674740 U CN201520674740 U CN 201520674740U CN 204992806 U CN204992806 U CN 204992806U
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- pawl
- stator core
- pole
- arm
- pole tip
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Abstract
The utility model discloses a single -Phase permanent -Magnet motor and stator core thereof, single -Phase permanent -Magnet motor include stator core, twine winding and the rotatory permanent magnet rotor of stator relatively on stator core, stator core includes tip and two arms that are stretched out by the tip, two arm intervals set up, and each arm includes with end connection's linking arm and formed at the utmost point claw of the end of linking arm, it holds the rotor to form the space in the claw of the two poles of the earth, utmost point claw encircles the space forms the polar arc face, stator core's polar arc face encircles the rotor and forms the air gap with the rotor, and the horizontal outwardly directed long pole tip and the short pole tip of forming respectively in circumference both sides of each utmost point claw, the long pole tip of each utmost point claw and another the extremely short pole tip of claw corresponding and form the tooth's socket between the two, the tooth's socket makes the polar arc face in upwards disconnection of week, polar arc face indent is formed with and starts the groove, start the trench on the center pin of utmost point claw for can the twocouese quick start when motor starts once more, and effectively reduce the inductance.
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 is generally U-shaped, 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.Namely described winding is wound on polar arm, and described rotor is then arranged between the pawl of the two poles of the earth, relative with polar arc face, forms roughly uniform air gap between the two.
For ease of the startup of rotor, on polar arc face, indent is formed with startup groove, described startup groove departs from the central shaft of pole pawl, rotor its pole axis after power-off stops operating so is made to deflect certain angle relative to the central shaft of pole pawl, formed and start angle, coordinate corresponding start-up circuit, make rotor upper be once energized time can start smoothly with specific direction.But above-mentioned electric machine can not two-way startup, and its application can be subject to a definite limitation.
Utility model content
In view of this, the utility model provides a kind of electric machine and stator core thereof of energy two-way startup.
On the one hand, the utility model provides a kind of stator core, two arms comprising end and stretched out by end, described two arm intervals are arranged, each arm comprises the pole pawl of the linking arm be connected with end and the end being formed at linking arm, 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, the circumferential both sides of each pole pawl are laterally protruding forms long pole tip and short pole tip respectively, the long pole tip of each pole pawl is corresponding with the short pole tip of another pole pawl and form a notch between, described notch makes polar arc face disconnect in the circumferential, described polar arc face indent is formed with startup groove.
On the other hand, the utility model provides a kind of stator core, two arms comprising end and stretched out by end, described two arm intervals are arranged, each arm comprises the pole pawl of the linking arm be connected with end and the end being formed at linking arm, space is formed for holding rotor in the pawl of described the two poles of the earth, spaced formation two notch between the pawl of described the two poles of the earth, the line of the center line of line relative the two poles of the earth pawl of described two notches tilts, the inner surface of described pole pawl is formed with startup groove, and the relatively described notch of described startup groove is closer to the central shaft of described pole pawl.
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 described pole dog collar rotor also forms air gap with rotor.
Compared to prior art, the pole pawl of the stator core of the utility model motor is extended with the different pole tip of length, and namely the pole pawl of stator core is unsymmetric structure, thus effectively reduces inductance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model electric machine one embodiment.
Fig. 2 is the explosive view of Fig. 1.
Fig. 3 is the vertical view of 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.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 by soft magnetic material, as ferromagnetic material etc. is made.Preferably, as shown in Figure 2, 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 by two independently arm 18 form.The spaced and parallel setting of described two arm 18, and be connected with end 14 is vertical respectively.In the present embodiment, be connected by the mode be mechanically connected after described end 14 is shaping with two arms 18 difference of polar arm 16, so can be connected with end 14 again after the complete winding of winding on arm 18 respectively, make the winding of winding more convenient, quick.Preferably, described end 14 and two arms 18, respectively by some thin slices, as stackingly in silicon steel sheet etc. to form.Only schematically show in diagram end 14, arm 18 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 20 all accordingly, pilot hole 20 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 arm 18.
In the present embodiment, described end 14 is formed with draw-in groove 22 respectively in the position near its two side ends, and described two arms 18 are outwardly on its end face towards end 14 respectively is accordingly formed with fixture block 24.The fixture block 24 of described two arms 18 snaps in a corresponding draw-in groove 22 vertically respectively, is connected by arm 18 with end 14, forms magnetic core 10.Preferably, described draw-in groove 22 and fixture block 24 form dove-tail form buckle and are connected, and avoid connecting rear disengagement.In other embodiments, described draw-in groove 22 also can be formed on arm 18, and correspondingly described fixture block 24 is formed on end 14, is similarly connected to form described magnetic core 10 by snap.
Two arm 18 structures of described polar arm 16 are roughly the same and arrange in opposite directions, and each arm 18, all in strip, comprises the pole pawl 28 of the linking arm 26 be connected with end 14 and the end being formed at linking arm 26.Linking arm 26 parallel interval of described two arms 18 is arranged, and midfeather one fixed width, is convenient to winding winding; The two poles of the earth pawl 28 in opposite directions and interval arrange, its internal face is in opposite directions recessed to form polar arc face 30, and described polar arc face 30 defines one for accommodating the receiving space 32 of rotor 12.Described receiving space 32 roughly in untight cylindric, is coaxially arranged with rotor 12.The diameter of described receiving space 32 is slightly larger than the diameter of rotor 12, thus the outer surface of polar arc face 30 and rotor 12 distance that interval one is little diametrically, form roughly uniform air gap, be convenient to the rotation of rotor 12.
Please refer to Fig. 3, in the present embodiment, each pole pawl 28 is roughly c-shaped, and the both sides of its circumference are horizontal relative to linking arm 26 protruding, form long pole tip 34 and short pole tip 36 respectively.Described long pole tip 34 length that linking arm 26 stretches out relatively is greater than the half of the width at the interval between linking arm 26, and the length that the relative linking arm 26 of short pole tip 36 stretches out is much smaller than the width at the interval between linking arm 26.Preferably, wherein the short pole tip 36 of a pole pawl 28 be positioned at inner side, namely near the side of linking arm 26, long pole tip 34 be positioned at away from linking arm 26 outside I; Another pole pawl 28 is just in time contrary, and its long pole tip 34 is positioned at inner side, short pole tip 36 is positioned at outside.
After assembling, the short pole tip 36 of each pole pawl 28 is corresponding with the long pole tip 34 of another pole pawl 28.Preferably, the length sum that described short pole tip 36 linking arm 26 relative to long pole tip 34 stretches out is slightly less than the width at the interval between linking arm 26.After assembling, form notch 38 between corresponding long and short pole tip 34,36, described notch 38 makes polar arc face 30 arrange in disconnecting, to avoid magnet short-cut path in the circumferential.Preferably, the width of described notch 3 is substantially even, and the width of two notches 38 formed between the two poles of the earth pawl 28 is substantially equal.Due to the length difference of long and short pole tip 34,36, make the central authorities at the interval of position deviation two linking arm 26 of notch 38.Preferably, the width that described polar arc face 30 disconnects in the circumferential, the i.e. width of notch 36, be less than 4 times of even air gap partial width between rotor, more preferably, the width of described notch 38 is less than 2 times of even air gap partial width between rotor, while avoiding leakage field, reduce cogging torque as far as possible as far as possible, ensures the efficiency of motor and reduces its noise.Preferably, the line of described two notches 38 is by the center of rotor shaft.Preferably, the central shaft X of described long and short pole tip 34,36 end face 35,37 antipode pawl 28 in opposite directions tilts certain angle.Preferably, the end face 35,37 of the long and short pole tip 34,36 of same pole pawl 28 is positioned in a common plane, and the plane parallel at end pole-face 35,37 place with the long and short pole tip 34,36 of another pole pawl 28, thus the centerline collineation of two notches 38, and the central shaft X of described center line antipode pawl 28 tilts, also namely pole pawl 28 has unsymmetric structure, and so design can effectively reduce the inductance of motor.
Described polar arc face 30 indent is formed with two startup grooves 40, and described two start groove 40 lays respectively on the two poles of the earth pawl 28.Each starts groove 40 and is positioned on the central shaft X of pole pawl 28.Start groove 40 self structure axisymmetricly, its symmetry axis overlaps with the central shaft X of pole pawl 28, and the degree of depth starting groove 40 is increased gradually by two side direction central authorities of its circumference, at corresponding central shaft X position place, starts groove 40 and has the maximum degree of depth.Start groove 40 because polar arc face 30 indent is formed with, between startup groove 40 position magnetic core 10 and rotor 12, form non-uniform gap, and at the central shaft X position place starting groove 40 corresponding pole pawl 28, there is maximum air gap.
In the present embodiment, the both sides of pole pawl 28 form long and short pole tip 34,36, and the central shaft X of pole-face 35, the 37 antipode pawl 28 of pole tip 34,36 tilts, and make the center relative centre axle X in polar arc face 30 itself deflect certain angle, be convenient to the startup of rotor 12, and effectively reduce inductance.
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, two arms comprising end and stretched out by end, described two arm intervals are arranged, each arm comprises the pole pawl of the linking arm be connected with end and the end being formed at linking arm, 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, the circumferential both sides of each pole pawl are laterally protruding forms long pole tip and short pole tip respectively, the long pole tip of each pole pawl is corresponding with the short pole tip of another pole pawl and form a notch between, described notch makes polar arc face disconnect in the circumferential, described polar arc face indent is formed with startup groove.
2. stator core as claimed in claim 1, it is characterized in that, described startup slot is on the central shaft of pole pawl.
3. stator core as claimed in claim 2, is characterized in that, the central shaft of described startup groove antipode pawl is symmetrical, and its degree of depth is increased gradually by its circumferential two side direction central authorities, has depth capacity at the center axial position of corresponding pole pawl.
4. stator core as claimed in claim 1, it is characterized in that, described long pole tip and short pole tip all have an end face, the inclined certain angle of described end face antipode pawl.
5. stator core as claimed in claim 4, is characterized in that, the long pole tip of same pole pawl and the end face of short pole tip coplanar.
6. stator core as claimed in claim 5, it is characterized in that, the end face of described the two poles of the earth pawl is parallel to each other.
7. stator core as claimed in claim 1, it is characterized in that, the length that the relative linking arm of described long pole tip stretches out is greater than the half of the width at the interval between linking arm.
8. the stator core as described in any one of claim 1-7, it is characterized in that, described end and arm are connected by the stacking also machinery that forms of some thin slices respectively, described 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 respectively in corresponding draw-in groove and is connected with end by arm.
9. a stator core, two arms comprising end and stretched out by end, described two arm intervals are arranged, each arm comprises the pole pawl of the linking arm be connected with end and the end being formed at linking arm, space is formed for holding rotor in the pawl of described the two poles of the earth, spaced formation two notch between the pawl of described the two poles of the earth, it is characterized in that, the line of the center line of line relative the two poles of the earth pawl of described two notches tilts, the inner surface of described pole pawl is formed with startup groove, and the relatively described notch of described startup groove is closer to the central shaft of described pole pawl.
10. stator core as claimed in claim 9, it is characterized in that, described startup slot is on the central shaft of pole pawl.
11. stator cores as claimed in claim 9, it is characterized in that, the width of described notch is substantially even.
12. stator cores as claimed in claim 10, is characterized in that, the end of described pole pawl forms pole tip, forms described notch between the end face of the just right pole tip of described the two poles of the earth pawl, and the line of the center line of described end face relatively described the two poles of the earth pawl tilts.
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, forms air gap between the inner surface of described pole pawl and rotor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520674740.3U CN204992806U (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 |
|---|---|---|---|
| CN201520674740.3U CN204992806U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992806U true CN204992806U (en) | 2016-01-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520674740.3U Expired - Fee Related CN204992806U (en) | 2015-09-01 | 2015-09-01 | Single -Phase permanent -Magnet motor and stator core thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204992806U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728427A (en) * | 2020-08-13 | 2020-10-02 | 方文豪 | Full-automatic mechanical swing crib and swing method thereof |
-
2015
- 2015-09-01 CN CN201520674740.3U patent/CN204992806U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111728427A (en) * | 2020-08-13 | 2020-10-02 | 方文豪 | Full-automatic mechanical swing crib and swing method thereof |
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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 |
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| CF01 | Termination of patent right due to non-payment of annual fee |