CN203445707U - Stator punching sheet, stator core and motor - Google Patents
Stator punching sheet, stator core and motor Download PDFInfo
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- CN203445707U CN203445707U CN201320403668.1U CN201320403668U CN203445707U CN 203445707 U CN203445707 U CN 203445707U CN 201320403668 U CN201320403668 U CN 201320403668U CN 203445707 U CN203445707 U CN 203445707U
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Abstract
The utility model provides a stator punching sheet, a stator core and a motor. The stator punching sheet is provided with a yoke part. The interior of the yoke part is provided with a tooth part which is detachably connected with the yoke part. The inner periphery of the yoke part is provided with a plurality of grooves. The tooth part is provided with a plurality of tenons which respectively cooperate with the plurality of grooves. The tooth part is provided with a hollow inner circular hole and a plurality of teeth, wherein the plurality of teeth extends outwards from the inner circular hole along the axial direction of the stator punching sheet, and a winding groove is formed between each two adjacent teeth. The winding grooves comprise a plurality of grooves of a first type and a plurality of grooves of a second type. The width of each groove of the first type is less than the width of each groove of the second type. The depth of each groove of the first type is less than the depth of each groove of the second type. The grooves of the first type and the grooves of the second type are arranged at the circumferential direction of the stator punching sheet at intervals. The stator core is formed by the laminating of the above stator punching sheet, and the motor is provided with the above stator core. The stator punching sheet provided by the utility model is a punching sheet with the yoke part breaking away from the tooth part, improves the use rate of coils in the winding grooves, and guarantees the uniform distribution of magnetic densities of the yoke part and the tooth part.
Description
Technical field
The utility model relates to machine field, especially relates to a kind of motor of inner-rotor-type and has the stator punching of this motor use, the stator core that this stator punching is made.
Background technology
Motor is widely used in the various electric equipments of industrial production and life, and existing motor has stator and rotor, and armature spindle is arranged in rotor and with the rotation of rotor and rotates, and outputting power thus.
Referring to Fig. 1, the end cap 11,12 that more existing motors have housing 10 and are positioned at housing 10 two ends, housing 10 and end cap 11,12 surround a cavity, and stator 15 and rotor 18 are installed in cavity, and stator 15 has stator core 16 and is wrapped in the coil 17 on stator core 16.Rotor 18 is arranged in stator 15, and can be with respect to stator 15 rotations.Armature spindle 19 is arranged in rotor 18, and with rotor 18 interference fit, armature spindle 19 rotates under the drive of rotor 18, thus outside outputting power.
Stator core 16 is overrided to form by the identical stator punching of multi-disc shape conventionally, and referring to Fig. 2, stator punching 20 is stamped to form by silicon steel sheet, and it is roughly circular, and has the yoke portion 21 that is positioned at outer peripheral edges, and yoke portion 21 is circular.Stator punching 20 is also provided with a plurality of teeth 22 that radially extend to the middle part of stator punching 20 along stator punching 20 from yoke portion 21, between two adjacent teeth 22, forms a winding slot 23, and coil winding is on tooth 22.And the middle part of stator punching 20 arranges the interior circular hole 24 of a hollow, multi-disc stator punching 20 laminates and forms after stator core 16, and the interior circular hole 24 of stator punching 20 forms rotor hole, and rotor is installed in rotor hole.
Each interior loop 36 will be crossed over four winding slots 33, and each exterior loop 35 also crosses over four winding slots 33, and interior loop 36 is not wrapped on same winding slot 33 with exterior loop 35.Yet, the winding slot 33 that is wound around interior loop 36 will have exterior loop 35 to cross over, and the winding slot 33 that is wound around exterior loop 35 also has interior loop 36, cause the distance between interior loop 36 and exterior loop 35 very near, this proposes very high requirement to the insulation processing between interior loop 36 and exterior loop 35, so the insulating treatment process between interior loop 36 and exterior loop 35 is complicated.
In addition, due to interior loop 36 and exterior loop 35 stator core 16 axially on overlapping, cause interior loop 36 high with the coiling difficulty of exterior loop 35, cause interior loop 36 high with the turn-to-turn fraction defective of exterior loop 35, when raising the production cost of motor, affect the job stability of motor, cause that motor rated efficiency is low, energy consumption is large.
In order to meet adjacent two interior loop 36 or exterior loop 35, after rule, at stator core 16 notch positions, there are enough spaces of dodging, this part of will two-phase winding coil stretching out stator core 16 is wanted long enough, and long enough is wanted in the end that is exactly interior loop 36 and exterior loop 35.Like this, the enamelled wire use amount that causes manufacturing coil increases, and also causes the energy consumption of motor large, rated efficiency is low.
And, in existing motor manufacture process, is a plurality of coil windings of first coiling to coil around wire insertion technology, adopt again artificial or use the equipment such as coil inserting apparatus to be embedded in stator core 16, complex procedures and automaticity are low, and because the notch of stator core is narrow, during rule, easily enamelled wire is caused to damage.
Therefore, existing partial stator iron core adopts separate type, and referring to Fig. 4, the stator core of separate type is overrided to form by multi-disc stator punching 40, and every a slice stator punching 40 comprises yoke portion 41 and is arranged on the tooth portion 50 in yoke portion 41.As shown in Figure 5, yoke portion 41 is roughly square, and it has four trimmings 42,43,44,45, and wherein trimming 42,43 is parallel to each other, and forms a pair of trimming, and trimming 44,45 is also parallel to each other, and forms another to trimming.Upwards be provided with a plurality of grooves 46 week of yoke portion 41, each groove 46 is square groove.
Referring to Fig. 6, tooth portion 50 has the interior circular hole 51 of a hollow, and rotor can be arranged in interior circular hole 51.Tooth portion 50 has a plurality of teeth that extend radially outwardly along stator punching from interior circular hole 52, and the top of each tooth 52 is equipped with tenon 53, and tenon 53 coordinates for the groove 46 with yoke portion 41.When tooth portion 50 is installed to yoke portion 41, by coordinating of the tenon 53 at each tooth 52 top and the groove 46 of yoke portion 41, realize the fixing of tooth portion 50 and yoke portion 41.
Referring to Fig. 7, the coil winding of stator is on the tooth 52 of tooth portion 50, and coil comprises interior loop 55 and exterior loop 56.While manufacturing motor, conventionally first interior loop 55 is wrapped in after tooth 52, then exterior loop 56 is wrapped on tooth 52, finally the tooth portion 50 that is wound with coil is installed in yoke portion 41.Like this, the winding pole of coil for convenience, can improve the production efficiency of motor.
Yet, existing separate type stator core, on stator punching 40, the width of each groove 54, the degree of depth all equate, cause the space availability ratio of coil windings in groove 54 lower.In addition, because the excitation of two-phase winding coil is unequal, be presented as the magnetic density skewness of tooth portion 50 and yoke portion 41, thereby make motor overall performance not reach optimum on the stator punching 40 of equal groove, the operating efficiency of motor is lower.
Summary of the invention
Main purpose of the present utility model is to provide the higher stator punching of a kind of coil utilance in winding slot.
Another object of the present utility model is to provide the stator core that a kind of tooth portion and yoke portion magnetic density are evenly distributed.
An object more of the present utility model is to provide the motor that a kind of motor working efficiency is higher.
For realizing main purpose of the present utility model, the stator punching that the utility model provides comprises yoke portion, in yoke portion, be provided with the tooth portion being removably connected with yoke portion, the inner periphery of yoke portion is provided with a plurality of grooves, tooth portion is provided with a plurality of tenons that coordinate with a plurality of grooves, tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along stator punching from interior circular hole, between two adjacent teeth, form winding slot, wherein, a plurality of winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, the width of each first kind groove is less than the width of each Equations of The Second Kind groove, the degree of depth of each first kind groove is less than the degree of depth of each Equations of The Second Kind groove, and first kind groove and Equations of The Second Kind groove are arranged at the interval that makes progress in the week of stator punching.
From such scheme, the winding slot of stator punching comprises the first kind groove that width is less, the degree of depth is more shallow and width is large, the darker Equations of The Second Kind groove of the degree of depth, interior loop can be wrapped in two first kind grooves, exterior loop can be wrapped in Equations of The Second Kind groove, improve the utilance of coil in winding slot, also make stator core magnetic density distribute more even, be conducive to the efficient operation of motor.
A preferred scheme is, first kind groove and Equations of The Second Kind groove week of stator punching upwards between two interval arrange, the outer peripheral edges of yoke portion have two pairs of trimmings, every a pair of edge tool has two trimmings that be arranged in parallel.
As can be seen here, being provided with is like this beneficial to interior loop and is separated with between two first kind grooves of two Equations of The Second Kind grooves between being wrapped in, between being wrapped in, exterior loop is separated with between the first kind groove of two Equations of The Second Kind grooves, guarantee to be only wound with in each winding slot a coil, avoid the overlapped of coil, and then guarantee electric insulation.
For realizing another object of the present utility model, the stator core that the utility model provides is overrided to form by the identical stator punching of multi-disc shape, every a slice stator punching has yoke portion, in yoke portion, be provided with the tooth portion being removably connected with yoke portion, the inner periphery of yoke portion is provided with a plurality of grooves, tooth portion is provided with a plurality of tenons that coordinate with a plurality of grooves, tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along stator punching from interior circular hole, between two adjacent teeth, form winding slot, wherein, a plurality of winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, the width of each first kind groove is less than the width of each Equations of The Second Kind groove, the degree of depth of each first kind groove is less than the degree of depth of each Equations of The Second Kind groove, and first kind groove and Equations of The Second Kind groove are arranged at the interval that makes progress in the week of stator punching.
From such scheme, by the winding slot of stator punching being designed to two class width, winding slot that the degree of depth is different, be conducive to interior loop and exterior loop to be wrapped in respectively on first kind groove and Equations of The Second Kind groove, while making motor operation, on stator core, magnetic density is more even.
For realizing an object more of the present utility model, the motor that the utility model provides has stator and is arranged on the rotor in stator, stator has stator core and is wrapped in the coil on stator core, stator core is overrided to form by multi-disc stator punching, every a slice stator punching has yoke portion, in yoke portion, be provided with the tooth portion being removably connected with yoke portion, the inner periphery of yoke portion is provided with a plurality of grooves, tooth portion is provided with a plurality of tenons that coordinate with a plurality of grooves, tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along stator punching from interior circular hole, between two adjacent teeth, form winding slot, wherein, a plurality of winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, the width of each first kind groove is less than the width of each Equations of The Second Kind groove, the degree of depth of each first kind groove is less than the degree of depth of each Equations of The Second Kind groove, and first kind groove and Equations of The Second Kind groove are arranged at the interval that makes progress in the week of stator punching, coil comprises and is wrapped in two interior loop between first kind groove and is wrapped in two exterior loop between Equations of The Second Kind groove.
As can be seen here, the yoke portion of the stator punching of motor is removably connected with tooth portion, and winding slot is designed to the winding slot that two classes are different, when improving the utilance of coil in winding slot, can also make the tooth portion of stator core, the magnetic density of yoke portion is more even, the work of motor is more stable.
Accompanying drawing explanation
Fig. 1 is the cutaway view of existing motor.
Fig. 2 is the structure enlarged drawing of existing stator punching.
Fig. 3 is the structure enlarged drawing that existing stator core is wound with coil.
Fig. 4 is the structure chart of existing a kind of separate type stator punching.
Fig. 5 is the structure chart of yoke portion in existing separate type stator punching.
Fig. 6 is the structure chart of tooth portion in existing separate type stator punching.
Fig. 7 is the structure chart that existing separate type stator core is wound with coil.
Fig. 8 is the structure chart of the utility model stator punching embodiment.
Fig. 9 is the structure chart of yoke portion in the utility model stator punching embodiment.
Figure 10 is the structure chart of tooth portion in the utility model stator punching embodiment.
Figure 11 is the structure chart that the stator core in the utility model motor embodiment is wound with coil.
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Embodiment
The end cap that motor of the present utility model has housing and is positioned at housing both sides, housing and end cap surround a cavity, and stator and rotor are installed in cavity.In the present embodiment, stator consists of stator core and the coil that is wrapped on stator core, and the middle part of stator core is provided with columned rotor installing hole, and rotor is arranged in rotor installing hole.And the middle part of rotor is provided with armature spindle, armature spindle and rotor interference fit, and rotate with the rotation of rotor, thus outside outputting power.
Stator has stator core and is wrapped in the coil on stator core, and stator core is overrided to form by the identical stator punching of multi-disc shape.Referring to Fig. 8, the stator punching 60 of the present embodiment is stamped to form by silicon steel sheet, and it consists of with tooth portion 71 the yoke portion 61 removably connecting, and yoke portion 61 is positioned at the outside of customization punching 60, and tooth portion 71 is positioned at yoke portion 61.
Referring to Fig. 9, yoke portion 61 is roughly square, and it has four trimmings 62,63,64,65, and wherein trimming 62,63 is parallel to each other, and forms first pair of trimming, and trimming 64,65 is also parallel to each other, and forms second pair of trimming.Two adjacent trimmings are mutually vertical, and pass through arc transition between two adjacent trimmings.On four angles of yoke portion 61, be respectively equipped with a circular through hole 66, realize the location of yoke portion when stator punching is laminated.
The inner periphery of yoke portion 61 is provided with a plurality of grooves, comprises the groove 68 of semicircular groove 67 and swallow-tail form, and a plurality of grooves are circumferentially evenly arranged along the inner periphery of yoke portion 61.Each groove 67,68 is all to extend from the outside edge direction of inner periphery.Between two adjacent grooves, have a fillet, the fillet that is positioned at semi-circular groove 67 both sides is first kind fillet 69, and the fillet that is positioned at dovetail groove 68 both sides is Equations of The Second Kind fillet 70.As seen from Figure 9, first kind fillet 69 is than the center of circle of the more close yoke of Equations of The Second Kind fillet 70 portion 61 inner circles.
Referring to Figure 10, the interior circular hole 72 that the middle part of tooth portion 71 is hollow, interior circular hole 72 is positive circular.After multi-disc stator punching 60 laminates in the stator core of rear formation, the interior circular hole 72 of stator punching 60 forms the rotor installing hole of stator cores, and rotor is arranged in rotor installing hole.
Outside interior circular hole 72, tooth portion 71 is provided with 16 teeth that extend radially outwardly along stator punching 60 from interior circular hole 72, and 16 teeth comprise four first kind teeth 73 and 12 Equations of The Second Kind teeth 75, and the length of first kind tooth 73 is less than the length of Equations of The Second Kind tooth 75.The end of each tooth is equipped with a tenon, and as shown in figure 10, the end of first kind tooth 73 is provided with semicircular tenon 74, and the end of Equations of The Second Kind tooth 75 is provided with the tenon 76 of swallow-tail form.
Week in tooth portion 71 makes progress, and two adjacent teeth form a winding slot, and as shown in figure 10, the winding slot that is positioned at first kind tooth 73 both sides is first kind groove 77, and the winding slot between two Equations of The Second Kind teeth 75 is Equations of The Second Kind groove 78.The notch of each first kind groove 77 is positioned on first kind fillet 67, and the notch of each Equations of The Second Kind groove 78 is positioned on Equations of The Second Kind fillet 68.
As shown in Figure 8, tooth portion 71 is installed to after yoke portion 61, week at stator punching 60 upwards forms a plurality of winding slots, first kind groove 77 is arranged at interval between two with Equations of The Second Kind groove 78, between being separated with between adjacent two first kind grooves 77 of Equations of The Second Kind groove 78 between, be separated with two Equations of The Second Kind grooves 78, be separated with two first kind grooves 77 between being separated with between adjacent two Equations of The Second Kind grooves 78 of first kind groove 77.
The width of first kind groove 77 is A1, and the degree of depth is D1, and the width of Equations of The Second Kind groove 78 is A2, and the degree of depth is D2, and as seen from Figure 8, the width A1 of first kind groove 77 is less than the width A2 of Equations of The Second Kind groove 78, and the depth D 1 of first kind groove 77 is less than the degree of depth of Equations of The Second Kind groove 78.
Referring to Figure 11, stator core 80 is overrided to form by multi-disc stator punching 60, while manufacturing stator, first the tooth portion 71 of multi-disc stator punching 60 is laminated to the tooth portion 82 that forms stator core 80, and the yoke portion 61 of multi-disc stator punching 60 is laminated to the yoke portion 81 that forms stator core 80.Then, coil winding, on the tooth 82,83 of tooth portion 82, is finally installed to the tooth portion 82 that is wound with coil in yoke portion 81.Like this, can by automation equipment by coil winding in tooth portion 82, the coiling of coil is simple, convenient, improves the production efficiency of stator.
Identical with stator punching, tooth portion 82 has first kind tooth 83 and Equations of The Second Kind tooth 84, is also provided with spaced first kind groove 85 and Equations of The Second Kind groove 86 between two.The coil being wound on stator core 80 comprises two-layer coil, i.e. interior loop 87 and exterior loop 88, and interior loop 87 is near tooth portion 82, and exterior loop 88 is near yoke portion 81.In addition, interior loop 87 is wound between two first kind grooves 85, and each exterior loop 88 is wound between two Equations of The Second Kind grooves 88.Like this, can avoid interior loop 87 and exterior loop 88 upwards overlapping in the footpath of stator core 80.
By spaced apart first kind groove and Equations of The Second Kind groove are set on stator punching, make the utilance of coil in winding slot higher, during motor operation, the magnetic density of stator core is more even, and motor operation is more steady, and efficiency is higher.In addition, for square stator punching, by design area, compared with little first kind groove, can avoid the existence of Yin Qiebian to cause the distance between notch and trimming too small, prevent the phenomenon that mould occurs collapsing mould while producing.
Certainly, above-described embodiment be only the utility model preferred embodiment, during practical application, can have more change, for example, the tenon of the groove of yoke portion and tooth portion is not semicircle or swallow-tail form, can be arranged to such as shapes such as square, triangles; Or, in tooth portion, be set with insulation framework, winding around in insulation framework, such change also can realize the purpose of this utility model.
The variations such as change of the change of the change of the number of teeth amount of tooth portion, two class groove sizes, yoke portion and tooth portion size finally it is emphasized that the utility model is not limited to above-mentioned execution mode, as also should being included in the protection range of the utility model claim.
Claims (10)
1. stator punching, comprises
Yoke portion, in described yoke portion, be provided with the tooth portion being removably connected with described yoke portion, the inner periphery of described yoke portion is provided with a plurality of grooves, described tooth portion is provided with a plurality of tenons that coordinate with a plurality of described grooves, described tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along described stator punching from described interior circular hole, between two adjacent described teeth, form winding slot;
It is characterized in that:
A plurality of described winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, described in each, the width of first kind groove is less than the width of Equations of The Second Kind groove described in each, described in each, the degree of depth of first kind groove is less than the degree of depth of Equations of The Second Kind groove described in each, and described first kind groove and described Equations of The Second Kind groove are arranged at the interval that makes progress in the week of described stator punching.
2. stator punching according to claim 1, is characterized in that:
Described first kind groove and described Equations of The Second Kind groove are arranged at the interval between two that makes progress in the week of described stator punching.
3. stator punching according to claim 1 and 2, is characterized in that:
Described tenon is semicircle or swallow-tail form.
4. stator punching according to claim 1 and 2, is characterized in that:
The outer peripheral edges of described yoke portion have two pairs of trimmings, and every a pair of described trimming has two trimmings that be arranged in parallel.
5. stator core, the stator punching identical by multi-disc shape is overrided to form, and described in each, stator punching comprises
Yoke portion, in described yoke portion, be provided with the tooth portion being removably connected with described yoke portion, the inner periphery of described yoke portion is provided with a plurality of grooves, described tooth portion is provided with a plurality of tenons that coordinate with a plurality of described grooves, described tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along described stator punching from described interior circular hole, between two adjacent described teeth, form winding slot;
It is characterized in that:
A plurality of described winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, described in each, the width of first kind groove is less than the width of Equations of The Second Kind groove described in each, described in each, the degree of depth of first kind groove is less than the degree of depth of Equations of The Second Kind groove described in each, and described first kind groove and described Equations of The Second Kind groove are arranged at the interval that makes progress in the week of described stator punching.
6. stator core according to claim 5, is characterized in that:
Described first kind groove and described Equations of The Second Kind groove are arranged at the interval between two that makes progress in the week of described stator punching.
7. according to the stator core described in claim 5 or 6, it is characterized in that:
Described tenon is semicircle or swallow-tail form.
8. motor, comprises
Stator and be arranged on the rotor in described stator, described stator has stator core and is wrapped in the coil on described stator core, described stator core is overrided to form by multi-disc stator punching, described in each, stator punching comprises yoke portion, in described yoke portion, be provided with the tooth portion being removably connected with described yoke portion, the inner periphery of described yoke portion is provided with a plurality of grooves, described tooth portion is provided with a plurality of tenons that coordinate with a plurality of described grooves, described tooth portion has the interior circular hole of hollow, and be provided with a plurality of teeth that extend radially outwardly along described stator punching from described interior circular hole, between two adjacent described teeth, form winding slot,
It is characterized in that:
A plurality of described winding slots comprise a plurality of first kind grooves and a plurality of Equations of The Second Kind groove, described in each, the width of first kind groove is less than the width of Equations of The Second Kind groove described in each, described in each, the degree of depth of first kind groove is less than the degree of depth of Equations of The Second Kind groove described in each, and described first kind groove and described Equations of The Second Kind groove are arranged at the interval that makes progress in the week of described stator punching;
Described coil comprises and is wrapped in two interior loop between described first kind groove and is wrapped in two exterior loop between described Equations of The Second Kind groove.
9. motor according to claim 8, is characterized in that:
Described first kind groove and described Equations of The Second Kind groove are arranged at the interval between two that makes progress in the week of described stator punching.
10. motor according to claim 8 or claim 9, is characterized in that:
Described tenon is semicircle or swallow-tail form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320403668.1U CN203445707U (en) | 2013-07-08 | 2013-07-08 | Stator punching sheet, stator core and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320403668.1U CN203445707U (en) | 2013-07-08 | 2013-07-08 | Stator punching sheet, stator core and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203445707U true CN203445707U (en) | 2014-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320403668.1U Expired - Lifetime CN203445707U (en) | 2013-07-08 | 2013-07-08 | Stator punching sheet, stator core and motor |
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| Country | Link |
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| CN (1) | CN203445707U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602755A (en) * | 2017-02-28 | 2017-04-26 | 合肥工业大学 | Separable stator motor |
| CN107294234A (en) * | 2017-07-24 | 2017-10-24 | 广东美的环境电器制造有限公司 | The preparation method of field frame assembly, motor and field frame assembly |
| CN107591914A (en) * | 2017-10-09 | 2018-01-16 | 浙江三星机电股份有限公司 | A kind of rotor core and motor |
| CN109245339A (en) * | 2017-07-11 | 2019-01-18 | 上海鸣志电器股份有限公司 | A kind of step motor stator and the motor with the stator |
| WO2020057529A1 (en) * | 2018-09-18 | 2020-03-26 | 歌尔股份有限公司 | Stator core, electric motor stator and electric motor |
-
2013
- 2013-07-08 CN CN201320403668.1U patent/CN203445707U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106602755A (en) * | 2017-02-28 | 2017-04-26 | 合肥工业大学 | Separable stator motor |
| CN109245339A (en) * | 2017-07-11 | 2019-01-18 | 上海鸣志电器股份有限公司 | A kind of step motor stator and the motor with the stator |
| CN107294234A (en) * | 2017-07-24 | 2017-10-24 | 广东美的环境电器制造有限公司 | The preparation method of field frame assembly, motor and field frame assembly |
| CN107591914A (en) * | 2017-10-09 | 2018-01-16 | 浙江三星机电股份有限公司 | A kind of rotor core and motor |
| CN107591914B (en) * | 2017-10-09 | 2024-03-29 | 浙江三星机电股份有限公司 | Rotor core and motor |
| WO2020057529A1 (en) * | 2018-09-18 | 2020-03-26 | 歌尔股份有限公司 | Stator core, electric motor stator and electric motor |
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Granted publication date: 20140219 |
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| CX01 | Expiry of patent term |