CN204992839U - Single -Phase permanent -Magnet motor - Google Patents
Single -Phase permanent -Magnet motor Download PDFInfo
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- CN204992839U CN204992839U CN201520701418.5U CN201520701418U CN204992839U CN 204992839 U CN204992839 U CN 204992839U CN 201520701418 U CN201520701418 U CN 201520701418U CN 204992839 U CN204992839 U CN 204992839U
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Abstract
The utility model provides a single -Phase permanent -Magnet motor, including the rotor of stator with stator rotation relatively, this stator includes stator core and winds locates the winding on the stator core, stator core includes range upon range of first stator chip and second stator chip, wherein first stator chip includes first outer loop portion, first inner ring portion and a plurality of first wire winding portion that connects between first inside and outside ring portion, second stator chip include a plurality of and the first wire winding portion superpose that corresponds of inwards stretching out to the second outer loop portion of superpose, from second outer loop portion along the motor shaft with first outer loop portion second wire winding portion, stretch to inclining in two weeks from every second wire winding portion end correspond the second end terminal of position superpose, formation groove opening between the adjacent second end terminal with first inner ring portion. The utility model discloses a single -Phase permanent -Magnet motor has reduced among the prior art because possible start -up dead point has been avoided simultaneously in the existence of big notch and produce vibrations and noise, has improved the reliability that the motor starts.
Description
Technical field
The utility model relates to a kind of electric machine, particularly relates to a kind of electric machine of stator core of stepped construction.
Background technology
The motor stator core of the electric machine of prior art adopts monolithic construction, and namely the outer portion of stator core and teeth portion are molded as one formula structure simultaneously, establish large notch to facilitate coiling between the pole shoe of adjacent fingers.The electric machine of this kind of structure, the existence due to large notch can cause motor to produce larger location torque, thus produces vibrations and noise.And by the restriction of large notch, positioning starting angle is little, start poor reliability.
In view of this, the utility model aims to provide a kind of electric machine of novel improved startup reliability.
Utility model content
The utility model provides a kind of electric machine, this electric machine comprise stator and can relative stator rotate rotor; Described stator comprises stator core and is set around the winding on described stator core, several permanent-magnet poles that described rotor comprises rotor magnetic core and arranges along described rotor magnetic core circumference, and described stator core comprises the first stacked stator chip and the second stator chip; Wherein said first stator chip comprises the first outer portion, the first internal ring portion and some some first winding sections be connected between described first inside and outside ring portion; The second pole shoe that described second stator chip comprises the second outer portion, stretch to two weeks sides from some second winding sections that described second outer portion is inwardly stretched out, from each described second winding section end, forms channel opening between adjacent described second pole shoe; Described first outer portion and described second outer portion are along motor shaft to stacked, and described first winding section and corresponding described second winding section are along motor shaft to stacked, and the second pole shoe of described first internal ring portion and described second stator chip is along motor shaft to stacked.
As a kind of improvement project of the present utility model, the part that each second pole shoe is positioned at the second corresponding center line both sides, winding section is asymmetric about described second winding section center line.
As a kind of improvement project of the present utility model, the part length that each second pole shoe is positioned at the second corresponding center line both sides, winding section is different, or each second pole shoe is positioned at the distance difference of inner surface to rotor center of the part of the second corresponding center line both sides, winding section.
As a kind of improvement project of the present utility model, the outer surface of described permanent magnet and the inner peripheral surface of described first internal ring portion lay respectively on two concentric circles cylinders.
As a kind of improvement project of the present utility model, also comprise the positioning hole groove on the second pole shoe of the first internal ring portion be arranged between adjacent described first winding section, described positioning hole groove axially extending continuously or interval extension along motor, and each described positioning hole groove is not identical to the distance of adjacent two described first winding sections.
As a kind of improvement project of the present utility model, the quantity of described positioning hole groove is equal with the number of poles of the permanent-magnet pole of described rotor or be the integral multiple of described rotor permanent magnet pole number of poles.
As a kind of improvement project of the present utility model, described positioning hole groove is the stealthy positioning hole groove between the outer surface and inner peripheral surface of described first internal ring portion.
As a kind of improvement project of the present utility model, described positioning hole groove is exposed to the inner peripheral surface of described first internal ring portion.
As a kind of improvement project of the present utility model, the inner peripheral surface of described first internal ring portion and the inner peripheral surface of described second pole shoe are positioned on the same face of cylinder.
As a kind of improvement project of the present utility model, the outer surface of described permanent magnet reduces toward two ends to the distance of rotor center gradually from circumferential center.
As a kind of improvement project of the present utility model, described first winding section and described first outer portion discretely-formed.
As a kind of improvement project of the present utility model, the part of described first internal ring portion between adjacent first winding section is provided with magnetic bridge.
As a kind of improvement project of the present utility model, each described magnetic bridge is positioned at the centre position of two corresponding adjacent described first winding sections.
As a kind of improvement project of the present utility model, described first internal ring portion is in outer surface at the described magnetic bridge of correspondence and establishes groove or apertured between surfaces externally and internally, and described groove or hole are along motor shaft to extension.
As a kind of improvement project of the present utility model, described first internal ring portion establishes multiple groove or hole at correspondence described magnetic bridge place, and the magnetic resistance of described magnetic bridge position is therebetween maximum.
As a kind of improvement project of the present utility model, the part of described first internal ring portion between adjacent described first winding section establishes magnetic bridge; Described first internal ring portion is greater than the magnetic resistance at described positioning hole groove place at the magnetic resistance at described magnetic bridge place.
Electric machine of the present utility model, adopt the stacked formation stator core of stator chip of different structure, to reduce in prior art and adopt large notch stator chip and the vibrations that produce and noise merely, the location torque of motor can be reduced, improve the reliability of electric motor starting.
In order to further understand feature of the present utility model and technology contents, refer to following about detailed description of the present utility model and accompanying drawing, but institute's accompanying drawing only provide reference and explanation use, is not used for being limited the utility model.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the electric machine of the utility model first embodiment;
Fig. 2 is the schematic diagram after electric machine shown in Fig. 1 removes shell;
Fig. 3 is the rough schematic view that electric machine shown in Fig. 1 removes after shell, stator winding, rotor shaft etc.
Fig. 4 is the schematic diagram of the first stator chip of the electric machine shown in Fig. 1.
Fig. 5 is the schematic diagram of the second stator chip of the electric machine shown in Fig. 1.
Fig. 6 is the rotor magnetic core of the electric machine shown in Fig. 1 and the schematic diagram of permanent magnet thereof.
Fig. 7 is the schematic diagram of the first stator chip that the utility model second embodiment provides.
Fig. 8 is the schematic diagram of the rotor magnetic core that provides of the utility model second embodiment and permanent magnet thereof.
Fig. 9 is the schematic diagram of the first stator chip that the utility model the 3rd embodiment provides.
Figure 10 is the schematic diagram of the second stator chip that the utility model the 3rd embodiment provides.
Figure 11 is the schematic diagram of the rotor magnetic core that provides of the utility model the 3rd embodiment and permanent magnet thereof.
Figure 12 is the schematic diagram of the first stator chip that the utility model the 4th embodiment provides.
Figure 13 is the schematic diagram of the second stator chip, rotor magnetic core and the permanent magnet thereof that the utility model the 4th embodiment provides.
Figure 14 is the schematic diagram of the first stator chip that the utility model the 5th embodiment provides.
Figure 15 is the schematic diagram of the second stator chip that the utility model the 5th embodiment provides.
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.Accompanying drawing only provides reference and explanation use, is not used for being limited the utility model.The size shown in accompanying drawing is only used to be convenient to clear description, and does not limit proportionate relationship.
First embodiment
Refer to Fig. 1 to Fig. 5, the electric machine 10 that the utility model provides comprises stator 20 and can the rotor 50 that rotates of relative stator.
This stator 20 comprise the cylindrical case 21 of one end open, the end cap 23 being installed to shell 21 openend, the stator core 30 be installed in shell 21, be installed to stator core 30 insulation coil holder 38 and to be set around on stator core and the winding 39 supported by insulation coil holder 38.This stator core 30 is laminated with some second stator chips 320 by some first stator chips 310; Wherein this first stator chip 310 comprises the first outer portion 311, first internal ring portion 315 and some the first winding sections 313 be connected between this first inside and outside ring portion; The second pole shoe 325 that this second stator chip 320 comprises the second outer portion 321, stretch to two weeks sides from some second winding sections 323 that this second outer portion is inwardly stretched out, from each second winding section 323 end, forms channel opening 327 between the second adjacent pole shoe 325; Wherein, this first outer portion 311 and the second outer portion 321 are along motor shaft to stacked, and the first winding section 313 and the second corresponding winding section 323 are along motor shaft to stacked, and corresponding second pole shoe 325 of the first internal ring portion 315 and the second stator chip is along motor shaft to stacked.In the specific implementation, above-mentioned first stator chip 310 and the second stator chip 320 stacked by predetermined design interval.The utility model does not limit the quantity of the first stator chip and the second stator chip, its interval mode also can according to requiring to carry out predetermined design, such as the first stator chip and the second stator chip one by one interval are arranged, or two two or three second stator chips of the first stator chip interval etc.In the embodiment shown in fig. 3, adopt the first stator chip and the second stator chip spaced mode one by one, it should be noted that the quantity of stator chip is not limited to 3 layers.
Winding 39 is set around along motor shaft on the first winding section 313 after stacked and the second winding section 323, and the coil holder 38 that insulated between winding 39 and stator core 30 is isolated.Rotor 50 is contained in along motor shaft in the first internal ring portion 315 after stacked and the second pole shoe 325, along motor shaft to the first internal ring portion 315 after stacked and form air gap 41 between the second pole shoe 325 and the permanent-magnet pole of rotor 50 so that rotor can relative stator rotate.
Rotor 50 comprises rotor shaft 51, magnetic core 53 and several permanent-magnet poles 55; Wherein, rotating shaft 51 is passed and is fixed together with rotor magnetic core 53 in the middle of rotor magnetic core 53.Rotating shaft 51 one end is installed to the end cap 23 of stator by bearing 24, and the other end is installed to the bottom of the cylindrical case 21 of stator by another bearing, thus realize rotor can relative to stator rotation.
As shown in Figure 6, the permanent-magnet pole 55 in the present embodiment is formed by some pieces of permanent magnets 56, such as, be 4 pieces.The outer surface of this rotor magnetic core 53 is provided with some axially extended grooves 54, and each groove 54 is positioned at the boundary of two permanent magnets 56, to reduce magnetic dispersion.These some pieces of annular permanent magnets 56 are installed to the outer surface of rotor magnetic core 53; The outer surface of this permanent magnet and the inner peripheral surface of the first internal ring portion lay respectively on two concentric circles cylinders, and the inner peripheral surface of the inner peripheral surface of the first internal ring portion and the second pole shoe is positioned on the same face of cylinder, thus form even air gap.Annular alleged by the utility model refers to the enclosed construction circumferentially extended continuously, comprises annular, square, polygon etc.
In the present embodiment, the part of the first internal ring portion 315 between adjacent first winding section 313 establishes magnetic bridge 316, and magnetic bridge 316 has larger magnetic resistance relative to other parts being positioned at its both sides of the first internal ring portion 315.Preferably, magnetic bridge 316 is positioned at the centre position of two corresponding adjacent first winding sections 313, and as an alternative, magnetic bridge 316 also can be positioned at the centre position of departing from two adjacent first winding sections 313.Particularly, form groove 317 in the region of the corresponding magnetic bridge 316 of the outer surface of the first internal ring portion 315, groove 317 is along motor shaft to extension; The number of groove 317 can be more than or equal to 1, such as 3.When each magnetic bridge has multiple groove, the groove more away from the first winding section 313 can have larger size thus make the magnetic resistance of magnetic bridge also larger; That is, groove 317 from the first winding section 313 more close to, its size (especially radial depth) is less, the magnetic resistance of magnetic bridge is also less, groove 317 from the first winding section 313 more away from, its size (especially radial depth) is larger, and the magnetic resistance of magnetic bridge is also larger.Preferably, the magnetic resistance of magnetic bridge 316 middle position is maximum.
This first stator chip 310 and the second stator chip 320 are made up of the soft magnetic material with magnetic property, such as by magnetic conduction chip (industry commonly uses silicon steel sheet) along motor shaft to being laminated.Preferably, in the first stator chip, this first winding section 313 is along the distribution of motor circumference uniform intervals, and each first winding section 313 extends to the first outer portion 311 along motor radial direction from the first internal ring portion 315 substantially.
In addition, as shown in Figure 4, the first internal ring portion 315 (comprising radially corresponding first winding section place) between adjacent first winding section is also provided with positioning hole groove 318, each positioning hole groove 318 is not identical to the distance of adjacent two the first winding sections 313, and positioning hole groove 318 is partial to one of them first adjacent winding section.The number of positioning hole groove 318 is equal with the number of poles of the number of poles of stator, annular permanent magnet pole or be the integral multiple of rotor number of poles, is 4 in the present embodiment.In the present embodiment, stator winding adopts centralized winding, and therefore, winding section quantity equals the number of poles of stator.In alternative, winding section quantity can be the integral multiple of stator poles, such as 2 times, 3 times etc.In the present embodiment, positioning hole groove 318 is arranged along motor axially spaced-apart, and is positioned in the inner peripheral surface of the first internal ring portion 315.In an alternative, described positioning hole groove 318 is along motor shaft to continuous setting.
Preferably, when on the first internal ring portion positioning hole groove being arranged on the first stator chip, this second stator chip adopts symmetrical chip, as shown in Figure 5, second pole shoe 325 of this second stator chip is positioned at the center line symmetry of part about the second winding section 323 of the second center line both sides, winding section 323, and the inner surface of the second pole shoe 325 and the inner surface of the first internal ring portion are positioned on the same face of cylinder.
When motor be in non-"on" position also namely initial position time, due to the impact by positioning hole groove, the center line that the pole axis of rotor magnetic pole departs from corresponding stator winding portion also i.e. stator pole axis, thus rotor is positioned at depart from dead-centre position place.The angle that the pole axis of rotor magnetic pole and stator pole axis are formed is called and starts angle.In the present embodiment, this startup angle is greater than 45 degree of electrical degrees and is less than 135 degree of electrical degrees, and when motor stator winding passes to the electric current in a direction, rotor 50 can start from a direction; When motor stator winding passes to rightabout electric current, rotor 50 can start the other way around.Understandably, when starting angle and equaling 90 degree of electrical degrees, rotor 50 starts all than being easier to towards both direction, also namely the most easily realizes twocouese and starts.When starting angle and departing from 90 degree of electrical degrees, a rotor court wherein direction startup can be easier to than starting towards other direction.The application's utility model people finds through many experiments, and when starting angle and being in 45 degree of electrical degrees to 135 degree electrical degree scopes, the reliability that rotor starts towards both direction is all relatively good.
Second embodiment
Please refer to Fig. 7, form groove 317 with the first embodiment unlike the region of the corresponding magnetic bridge 316 of outer surface of, the first internal ring portion 313, the number of groove 317 is only 1, and the shape of groove 317 can be circular arc, other any shapes such as square.In addition, positioning hole groove 318 is by between the outer surface of the first internal ring portion 315 and inner peripheral surface, and be stealthy positioning hole groove, preferably, positioning hole groove 38 is closer to the inner peripheral surface of pole shoe.Positioning hole groove 318 along motor axially spaced-apart or can be arranged continuously.
As shown in Figure 8, in the present embodiment, the annular permanent magnet pole 65 that rotor 60 comprises rotor magnetic core 63 and arranges along periphery of rotor, the outer surface of this annular permanent magnet pole 65 is concentric with the inner peripheral surface of the first internal ring portion, thus forms even air gap 41 between.Particularly, the inner surface of this first internal ring portion is positioned at on the concentric circles that is the center of circle of rotor 60 center.The outer surface 56 of annular permanent magnet pole 65 is in cylindric, and be positioned at on the concentric circles that is the center of circle of rotor 60 center, that is, the first internal ring portion inner peripheral surface is concentric with the outer surface of permanent-magnet pole 65, thus forms even air gap between the first internal ring portion inner peripheral surface, permanent-magnet pole outer surface.
Annular permanent magnet pole 65 can be formed by one piece of annular permanent magnet 66, and annular permanent magnet 66 is installed to the outer surface of rotor magnetic core 63; The outer surface of this rotor magnetic core is provided with some axially extended grooves 64, and each groove 64 is positioned at the boundary of two permanent-magnet poles, to reduce magnetic dispersion.Understandably, annular permanent magnet pole 65 also can be made up of polylith arc-shaped permanent magnet 66.Understandably, the rotor of the present embodiment also can coordinate the stator of the first embodiment, the stator of the present embodiment also can coordinate the rotor of the first embodiment.
Preferably, when this stealthy positioning hole groove 318 is arranged on the first internal ring portion of the first stator chip, this second stator chip is symmetrical chip, and more specifically, the part that each second pole shoe is positioned at the second corresponding center line both sides, winding section is symmetrical about the second winding section center line.
3rd embodiment
Please refer to Fig. 9, Figure 10, with the first embodiment or the second embodiment unlike, in order to improve the winding efficiency of winding 39, stator core adopts split-type structural, particularly, the first winding section 313 and the first outer portion 311 discretely-formed; In the present embodiment, the first winding section 313 and the first internal ring portion 315 are an entirety, and this entirety is separated with the first outer portion 311.Equally, the second winding section 323 also can with the second outer shroud 321 discretely-formed; In the present embodiment, the second winding section 323 pole shoe 325 corresponding with it is one overall, and this entirety is separated with the second outer portion 321.When concrete operations, by the first winding section 313 and the second winding section 323 stacked.Then installing insulating coil holder, and carry out the winding of winding; Simultaneously can by the first outer portion 311 and the second outer portion 321 stacked formation cylinder; The first winding section 313 after completing winding winding and the second winding section 323 are combined and is installed to by the first outer portion 311 and the stacked cylinder formed of the second outer portion 321, obtain the stator core with winding.
In addition, in the present embodiment, as shown in figure 11, rotor comprises several permanent-magnet poles 75 arranged along this periphery of rotor, the outer surface of each permanent-magnet pole is cambered surface, the outer surface of permanent magnet reduces toward two ends to the distance of rotor center gradually from circumferential center, thus makes the inner peripheral surface of this permanent-magnet pole 75 and the first internal ring portion form symmetrical non-homogeneous air gap.Preferably, symmetrical non-homogeneous air gap maximum ga(u)ge is more than 1.5 times of its minimum thickness.
Each permanent-magnet pole 75 is formed by one piece of permanent magnet 76, and can certainly be spliced by polylith permanent magnet, rotor also comprises rotor magnetic core 73, and this permanent magnet 76 is installed to the outer surface of rotor magnetic core 73; The outer surface of rotor magnetic core is provided with some axially extended grooves 74, and each groove 74 is positioned at the boundary of two permanent-magnet poles 75, to reduce magnetic dispersion.For making this permanent-magnet pole 75 form symmetrical non-homogeneous air gap with the inner peripheral surface of pole shoe, the outer surface of described permanent magnet reduces toward two ends to the distance of rotor center gradually from circumferential center.Particularly, the outer surface of rotor magnetic core 73 and the inner peripheral surface of the first internal ring portion are concentric circless, and the thickness of permanent magnet 76 reduces gradually from circumferential center to two ends; Or the thickness of permanent magnet 76 is uniform thickness, the outer surface of rotor magnetic core 73 reduces gradually from circumferential center to two ends thus finally causes the outer surface of permanent magnet to reduce gradually toward two ends from circumferential center to the distance of rotor center.
It should be noted that, in above-mentioned all embodiments, first internal ring portion 311 of the first stator chip is less than the radial dimension at positioning hole groove 318 place at the radial dimension at magnetic bridge 316 place, even if be provided with positioning hole groove 318, but the magnetic resistance of the first internal ring portion at magnetic bridge 316 place or maximum.
4th embodiment
Please refer to Figure 12, Figure 13, with the first embodiment unlike, in the present embodiment, the first stator chip forms through hole 312 in the region of the corresponding magnetic bridge 316 of the outer surface of the first internal ring portion 315, and the number of through hole 312 can be one or more.Magnetic bridge 316 has maximum magnetic resistance in two adjacent first winding section 313 middle position, and such as, when each magnetic bridge has 3 through holes, this through hole along motor shaft to extension, and more has larger size away from the through hole of the first winding section 313; That is, through hole from the first winding section 313 more close to, its size (especially the diameter of through hole) is less, through hole from the first winding section 313 more away from, its size (especially the diameter of through hole) is larger, and the magnetic resistance of magnetic bridge is larger; When magnetic bridge 316 be located at the first internal ring portion be positioned at the centre position of adjacent first winding section 313 time, be positioned at the largest diameter of the through hole of adjacent first winding section 313 middle position, magnetic resistance is herein also maximum.
In the present embodiment, the first stator chip does not establish positioning hole groove.The part that the pole shoe 325 of each second stator chip is positioned at the second corresponding center line both sides, winding section 323 is asymmetric about the second winding section center line, as shown in figure 13, the inner surface of the second pole shoe 325 is change to the distance of rotor center, increase gradually as the inner surface of each the second pole shoe 325 passes through to the distance of rotor center along motor circumference, thus make to form non-homogeneous air gap between the inner surface of the second pole shoe 325 and rotor, thus the effect of location can be realized.
In the present embodiment, the permanent-magnet pole 85 of rotor 80 is installed on the outer surface of rotor magnetic core 83, and the outer surface of each rotor permanent magnet pole 85 is cambered surface, the outer surface of permanent-magnet pole 85 be positioned at rotor center be the center of circle the face of cylinder on.
5th embodiment
As shown in figure 14, in the present embodiment, first stator chip forms groove 317 in the region of the corresponding magnetic bridge of the outer surface of the first internal ring portion 315, and the number of groove 317 can be one or more, and magnetic bridge has maximum magnetic resistance in two adjacent first winding section middle position.This first stator chip is not provided with positioning hole groove equally.
As shown in figure 15, in the present embodiment, the length that second pole shoe 325 of the second stator chip is positioned at the part of center line both sides, winding section is unequal, now the inner surface of the second pole shoe 325 also can be positioned at rotor center be the center of circle the face of cylinder on, namely the inner surface of the second pole shoe 325 is constant to the distance of rotor center, so arranges and the initial position of rotor can be made equally to depart from dead-centre position.
Understandably, the rotor of previous embodiment and stator can cooperatively interact, and namely the rotor of each embodiment can coordinate the stator of all embodiments, and the stator of each embodiment also can coordinate the rotor of all embodiments.
The electric machine that the utility model embodiment is lifted, adopt the first stator chip and the stacked formation stator core of the second stator chip of different structure, to reduce in prior art and adopt large notch stator chip and the vibrations that produce and noise merely, the location torque of motor can be reduced, improve the reliability of electric motor starting.
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 (16)
1. an electric machine, comprise stator and can relative stator rotate rotor; Described stator comprises stator core and is set around the winding on described stator core, several permanent-magnet poles that described rotor comprises rotor magnetic core and arranges along described rotor magnetic core circumference, is characterized in that: described stator core comprises the first stacked stator chip and the second stator chip; Wherein said first stator chip comprises the first outer portion, the first internal ring portion and some some first winding sections be connected between described first inside and outside ring portion; The second pole shoe that described second stator chip comprises the second outer portion, stretch to two weeks sides from some second winding sections that described second outer portion is inwardly stretched out, from each described second winding section end, forms channel opening between adjacent described second pole shoe; Described first outer portion and described second outer portion are along motor shaft to stacked, and described first winding section and corresponding described second winding section are along motor shaft to stacked, and the second pole shoe of described first internal ring portion and described second stator chip is along motor shaft to stacked.
2. electric machine as claimed in claim 1, is characterized in that, the part that each second pole shoe is positioned at the second corresponding center line both sides, winding section is asymmetric about described second winding section center line.
3. electric machine as claimed in claim 2, it is characterized in that, the part length that each second pole shoe is positioned at the second corresponding center line both sides, winding section is different, or each second pole shoe is positioned at the distance difference of inner surface to rotor center of the part of the second corresponding center line both sides, winding section.
4. the electric machine as described in any one of claims 1 to 3, is characterized in that, the outer surface of described permanent-magnet pole and the inner peripheral surface of described first internal ring portion lay respectively on two concentric circles cylinders.
5. electric machine as claimed in claim 1, is characterized in that, the outer surface of described permanent-magnet pole reduces toward two ends to the distance of rotor center gradually from circumferential center.
6. electric machine as claimed in claim 1, it is characterized in that, also comprise the positioning hole groove on the first internal ring portion of being arranged between adjacent described first winding section, described positioning hole groove axially extending continuously or interval extension along motor, and each described positioning hole groove is not identical to the distance of adjacent two described first winding sections.
7. electric machine as claimed in claim 6, is characterized in that, the quantity of described positioning hole groove is equal with the number of poles of the permanent-magnet pole of described rotor or be the integral multiple of described rotor permanent magnet pole number of poles.
8. electric machine as claimed in claim 6, it is characterized in that, described positioning hole groove is the stealthy positioning hole groove between the outer surface and inner peripheral surface of described first internal ring portion.
9. electric machine as claimed in claim 6, it is characterized in that, described positioning hole groove is exposed to the inner peripheral surface of described first internal ring portion.
10. electric machine as claimed in claim 1, it is characterized in that, the inner peripheral surface of described first internal ring portion and the inner peripheral surface of described second pole shoe are positioned on the same face of cylinder.
11. electric machine as claimed in claim 1, is characterized in that, described first winding section and described first outer portion discretely-formed.
12. electric machine as claimed in claim 1, is characterized in that, the part of described first internal ring portion between adjacent first winding section is provided with magnetic bridge.
13. electric machine as claimed in claim 12, is characterized in that, each described magnetic bridge is positioned at the centre position of two corresponding adjacent described first winding sections.
14. electric machine as claimed in claim 12, is characterized in that, described first internal ring portion is in outer surface at the described magnetic bridge of correspondence and establishes groove or apertured between surfaces externally and internally, and described groove or hole are along motor shaft to extension.
15. electric machine as claimed in claim 12, is characterized in that, described first internal ring portion establishes multiple groove or hole at correspondence described magnetic bridge place, and the magnetic resistance of described magnetic bridge position is therebetween maximum.
16. electric machine as claimed in claim 6, is characterized in that, the part of described first internal ring portion between adjacent described first winding section establishes magnetic bridge; Described first internal ring portion is greater than the magnetic resistance at described positioning hole groove place at the magnetic resistance at described magnetic bridge place.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701418.5U CN204992839U (en) | 2015-09-10 | 2015-09-10 | Single -Phase permanent -Magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520701418.5U CN204992839U (en) | 2015-09-10 | 2015-09-10 | Single -Phase permanent -Magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204992839U true CN204992839U (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520701418.5U Expired - Fee Related CN204992839U (en) | 2015-09-10 | 2015-09-10 | Single -Phase permanent -Magnet motor |
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| CN (1) | CN204992839U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451836A (en) * | 2016-09-06 | 2017-02-22 | 珠海凯邦电机制造有限公司 | Stator core and motor |
-
2015
- 2015-09-10 CN CN201520701418.5U patent/CN204992839U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106451836A (en) * | 2016-09-06 | 2017-02-22 | 珠海凯邦电机制造有限公司 | Stator core and motor |
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| Date | Code | Title | Description |
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| 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: 20210910 |
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| CF01 | Termination of patent right due to non-payment of annual fee |