CN112737158B - Stator module and servo motor with same - Google Patents
Stator module and servo motor with same Download PDFInfo
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- CN112737158B CN112737158B CN202011570897.3A CN202011570897A CN112737158B CN 112737158 B CN112737158 B CN 112737158B CN 202011570897 A CN202011570897 A CN 202011570897A CN 112737158 B CN112737158 B CN 112737158B
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- yoke
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/14—Stator cores with salient poles
- H02K1/146—Stator cores with salient poles consisting of a generally annular yoke with salient poles
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K1/00—Details of the magnetic circuit
- H02K1/06—Details of the magnetic circuit characterised by the shape, form or construction
- H02K1/12—Stationary parts of the magnetic circuit
- H02K1/18—Means for mounting or fastening magnetic stationary parts on to, or to, the stator structures
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K2213/00—Specific aspects, not otherwise provided for and not covered by codes H02K2201/00 - H02K2211/00
- H02K2213/03—Machines characterised by numerical values, ranges, mathematical expressions or similar information
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention provides a stator assembly and a servo motor with the same, wherein the stator assembly comprises: the stator tooth part iron core is provided with a first positioning part on the circumferential surface, the first positioning part extends along the axial direction of the stator tooth part iron core, and the middle part of the first positioning part protrudes towards the direction far away from the stator tooth part iron core relative to the end part of the first positioning part; the stator yoke iron core, stator yoke iron core cover is established on stator tooth iron core, is provided with the second location portion of mutually supporting with first location portion on the stator yoke iron core, and the axial direction of stator yoke iron core is followed in the second location portion, and the middle part of second location portion is sunken towards the outside of stator yoke iron core for the tip of second location portion. The invention solves the problem that the motor stator in the prior art is easy to deform in the assembly process.
Description
Technical Field
The invention relates to the field of motor stator design, in particular to a stator assembly and a servo motor with the same.
Background
At present, the application occasions of the servo motor are wider and wider, and the performance requirements on the servo motor are higher and higher, such as high power density, high overload, small volume, low cogging torque, low torque ripple, low temperature rise, low cost and the like.
In order to improve power density and facilitate winding, a stator in the prior art adopts a method of separating stator teeth from tooth yokes as shown in fig. 1 and fig. 2, a stator tooth part iron core is formed by laminating tooth part iron core stamped sheets, a stator yoke part iron core is formed by laminating yoke part iron core stamped sheets, then a framework (namely a winding) wound with wires is placed on teeth of the stator tooth part iron core, and the stator yoke part iron core is pressed on the stator tooth part iron core, so that the stator is manufactured.
However, in the stator in the prior art, when the stator yoke iron core is pressed into the stator tooth iron core, along with continuous pressing, the contact stress between the tooth part and the yoke part is increased, so that the stator iron core is deformed, the roundness of the inner circle is poor, and the cogging torque of the motor is increased; in addition, because the contact stress is too large, the tooth part and the yoke part are difficult to assemble, and the process difficulty of stator manufacturing is increased.
Disclosure of Invention
The invention mainly aims to provide a stator assembly and a servo motor with the same, and aims to solve the problem that a motor stator in the prior art is easy to deform in an assembling process.
In order to achieve the above object, according to one aspect of the present invention, there is provided a stator assembly including: the stator tooth part iron core is provided with a first positioning part on the circumferential surface, the first positioning part extends along the axial direction of the stator tooth part iron core, and the middle part of the first positioning part protrudes towards the direction far away from the stator tooth part iron core relative to the end part of the first positioning part; the stator yoke iron core, stator yoke iron core cover is established on stator tooth iron core, is provided with the second location portion of mutually supporting with first location portion on the stator yoke iron core, and the axial direction of stator yoke iron core is followed in the second location portion, and the middle part of second location portion is sunken towards the outside of stator yoke iron core for the tip of second location portion.
Furthermore, the first positioning part is provided with a first positioning surface attached to the second positioning part, and the first positioning surface is a curved surface.
Further, first location portion has the first locating surface with the laminating of second location portion, and first locating surface is the arcwall face.
Further, the first positioning portions are provided in plural, and the plural first positioning portions are provided at intervals in the circumferential direction of the stator tooth core.
Furthermore, the second positioning portion comprises a third portion and a fourth portion which are connected with each other, a third positioning surface is arranged on the third portion, a fourth positioning surface is arranged on the fourth portion, the third positioning surface and the fourth positioning surface are attached to the first positioning portion, and the third positioning surface and/or the fourth positioning surface are curved surfaces.
Further, the third positioning surface and/or the fourth positioning surface are arc-shaped surfaces.
Further, the third portion and the fourth portion are symmetrically arranged with respect to a radial cross section of the stator yoke core.
Further, the stator yoke core further includes: the third part is arranged on the upper yoke iron core and gradually dents towards the outer side of the upper yoke iron core from the free end of the third part to the connecting end of the third part; the fourth part is arranged on the lower yoke iron core and is gradually sunken towards the outer side of the lower yoke iron core from the free end of the fourth part to the connecting end of the fourth part.
Further, the first positioning portion includes a plurality of step structures, and the step structures are sequentially arranged from an end portion of the first positioning portion to a middle portion of the first positioning portion.
Further, the inner diameter of the stator tooth iron core is D, and the distance between the first positioning surface and the axis of the stator tooth iron core is R, R m -0.05≤R≤R m +0.05，R m ＝0.8867D-4.0902。
According to another aspect of the invention, a servo motor is provided, which comprises a stator assembly.
By applying the technical scheme, the stator assembly comprises a stator tooth iron core and a stator yoke iron core, wherein a first positioning part is arranged on the circumferential surface of the stator tooth iron core, the first positioning part extends along the axial direction of the stator tooth iron core, and the middle part of the first positioning part protrudes towards the direction far away from the stator tooth iron core relative to the end part of the first positioning part; the stator yoke iron core is sleeved on the stator tooth iron core, a second positioning portion matched with the first positioning portion is arranged on the stator yoke iron core, the second positioning portion extends along the axial direction of the stator yoke iron core, and the middle portion of the second positioning portion is sunken towards the outer side of the stator yoke iron core relative to the end portion of the second positioning portion. When the stator assembly is assembled, the stator yoke iron core is gradually sleeved on the stator tooth iron core, since the middle portion of the first positioning portion is projected toward a direction away from the stator tooth core with respect to the end portion of the first positioning portion, the middle portion of the second positioning portion is recessed toward the outside of the stator yoke core with respect to the end portion of the second positioning portion, therefore, in the process of assembling the stator assembly, the stator tooth iron core and the stator yoke iron core are not contacted, and the stator tooth iron core and the stator yoke iron core can be contacted to generate stress only after the first positioning part and the second positioning part are completely jointed, the problem that the roundness of the inner circle of the stator is poor due to the concentrated contact stress of the tooth part and the yoke part in the assembling process is avoided, the reliability of the stator assembling process is improved, and the problem that a motor stator in the prior art is easy to deform in the assembling process is solved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this application, illustrate embodiments of the invention and, together with the description, serve to explain the invention and not to limit the invention. In the drawings:
figure 1 shows an exploded view of a prior art stator assembly according to the present invention;
figure 2 shows a prior art cross-sectional view of a stator assembly according to the present invention;
FIG. 3 shows an assembly schematic of an embodiment of a stator assembly according to the present invention;
figure 4 shows a schematic structural view of a first embodiment of a stator tooth core of a stator assembly according to the present invention;
FIG. 5 shows a cross-sectional view according to the plane B-B of FIG. 4;
fig. 6 shows a schematic structural view of a tooth core lamination of a stator assembly according to the present invention;
fig. 7 shows a structural schematic view of an upper yoke core of a stator assembly according to the present invention;
FIG. 8 shows a cross-sectional view through plane C-C according to FIG. 7;
fig. 9 is a schematic view illustrating a structure of a lower yoke core of a stator assembly according to the present invention;
FIG. 10 shows a cross-sectional view through plane D-D according to FIG. 9; and
fig. 11 shows a schematic view of a yoke core lamination of a stator assembly according to the present invention;
figure 12 shows a schematic structural view of a second embodiment of the stator tooth cores of a stator assembly according to the present invention;
fig. 13 shows a cross-sectional view according to plane F-F of fig. 12.
Wherein the figures include the following reference numerals:
1. a stator tooth core; 10. a first positioning portion; 2. a stator yoke core; 20. a second positioning portion; 101. a first positioning surface; 21. a third portion; 22. a fourth part; 23. an upper yoke iron core; 24. a lower yoke iron core; 11. a first portion; 12. a second portion; 3. a winding; 13. punching a tooth iron core; 14. a step structure; 25. and punching the iron core at the yoke part.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the embodiments with reference to the attached drawings.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The present invention provides a stator assembly, please refer to fig. 3 to 13, including: the stator tooth iron core comprises a stator tooth iron core 1, wherein a first positioning part 10 is arranged on the circumferential surface of the stator tooth iron core 1, the first positioning part 10 extends along the axial direction of the stator tooth iron core 1, and the middle part of the first positioning part 10 protrudes towards the direction far away from the stator tooth iron core 1 relative to the end part of the first positioning part 10; stator yoke iron core 2, stator yoke iron core 2 cover is established on stator tooth iron core 1, is provided with the second location portion 20 that mutually supports with first location portion 10 on the stator yoke iron core 2, and second location portion 20 extends along the axial direction of stator yoke iron core 2, and the middle part of second location portion 20 is sunken towards the outside of stator yoke iron core 2 for the tip of second location portion 20.
The stator assembly comprises a stator tooth iron core 1 and a stator yoke iron core 2, wherein a first positioning part 10 is arranged on the circumferential surface of the stator tooth iron core 1, the first positioning part 10 extends along the axial direction of the stator tooth iron core 1, and the middle part of the first positioning part 10 protrudes towards the direction far away from the stator tooth iron core 1 relative to the end part of the first positioning part 10; the stator yoke iron core 2 is sleeved on the stator tooth iron core 1, the stator yoke iron core 2 is provided with a second positioning portion 20 matched with the first positioning portion 10, the second positioning portion 20 extends along the axial direction of the stator yoke iron core 2, and the middle portion of the second positioning portion 20 is sunken towards the outer side of the stator yoke iron core 2 relative to the end portion of the second positioning portion 20. When the stator assembly is assembled, in the process that the stator yoke iron core 2 is gradually sleeved on the stator tooth iron core 1, since the middle portions of the first positioning portions 10 project toward the direction away from the stator tooth cores 1 with respect to the end portions of the first positioning portions 10, the middle portions of the second positioning portions 20 are recessed toward the outside of the stator yoke core 2 with respect to the end portions of the second positioning portions 20, this makes the stator tooth core 1 and the stator yoke core 2 have no contact in the process of assembling the stator assembly, and only after the first positioning portion 10 and the second positioning portion 20 are completely attached, the stator tooth core 1 and the stator yoke core 2 will contact to generate stress, the problem that the roundness of the inner circle of the stator is poor due to the concentrated contact stress of the tooth part and the yoke part in the assembling process is avoided, the reliability of the stator assembling process is improved, and the problem that a motor stator in the prior art is easy to deform in the assembling process is solved.
In the embodiment of the present invention, the first positioning portion 10 has the first positioning surface 101 attached to the second positioning portion 20, and the first positioning surface 101 is a curved surface. Set up convenient assembling like this, the contact stress when eliminating stator tooth portion iron core 1 and impressing stator yoke portion iron core 2 has avoided the risk that circle warp and skeleton splitting lead to the copper line to be extruded the skeleton in the stator.
Preferably, the first positioning portion 10 has a first positioning surface 101 attached to the second positioning portion 20, and the first positioning surface 101 is an arc-shaped surface. Set up like this and conveniently process stator tooth iron core 1, the stator yoke portion iron core 2 of being convenient for simultaneously is mutually supported with stator tooth iron core 1.
In a specific implementation, the first positioning portions 10 are plural, and the plural first positioning portions 10 are provided at intervals in the circumferential direction of the stator tooth core 1. The matching strength between the stator tooth part iron core 1 and the stator yoke part iron core 2 is increased by the arrangement, so that the stator assembly is more stable in the working process.
The second positioning portion 20 includes a third portion 21 and a fourth portion 22 connected to each other, the third portion 21 has a third positioning surface thereon, the fourth portion 22 has a fourth positioning surface thereon, the third positioning surface and the fourth positioning surface are both attached to the first positioning portion 10, and the third positioning surface and/or the fourth positioning surface are curved surfaces. The third portion 21 and the fourth portion 22 are matched with the first positioning portion 10 respectively, so that the stator yoke iron core 2 can be smoothly sleeved on the stator tooth iron core 1, and the first positioning portion 10 and the second positioning portion 20 can be completely attached to each other only after the stator yoke iron core 2 is completely sleeved on the stator tooth iron core 1.
Preferably, for the convenience of processing, third locating surface and/or fourth locating surface are the arcwall face.
In the embodied process, the third and fourth portions 21, 22 are symmetrically arranged with respect to a radial cross section of the stator yoke core 2.
In the embodiment provided by the present invention, the stator yoke core 2 further includes: an upper yoke core 23, on which the third portion 21 is provided, the third portion being gradually recessed toward an outer side of the upper yoke core 23 from a free end of the third portion 21 to a connection end of the third portion 21; and the fourth part 22 is arranged on the lower yoke iron core 24, and the fourth part is gradually sunken towards the outer side of the lower yoke iron core 24 from the free end of the fourth part 22 to the connecting end of the fourth part 22. Wherein, the third locating surface is the arcwall face, and the fourth locating surface is the arcwall face. The arrangement makes the surface of the second positioning part 20 smooth, and reduces the resistance of the stator yoke iron core 2 sleeved on the stator tooth iron core 1. It should be noted that the third portion 21 is strip-shaped, the connecting end of the third portion 21 is an end connected to the fourth portion 22, and the free end of the third portion 21 is an end opposite to the connecting end; similarly, the fourth portion is strip-shaped, the connection end of the fourth portion is the end connected with the third portion 21, and the free end of the fourth portion is the end opposite to the connection end.
Specifically, the first positioning portion 10 includes a first portion 11 and a second portion 12, the first portion 11 is attached to the third portion 21, and the second portion 12 is attached to the fourth portion 22. The first portion 11 has a first locating surface for engaging the third locating surface and the second portion 12 has a second locating surface for engaging the fourth locating surface.
In another embodiment provided by the present invention, the first positioning portion 10 includes a plurality of step structures 14, and the step structures 14 are sequentially arranged from the end portion of the first positioning portion 10 to the middle portion of the first positioning portion 10.
In the specific implementation, as shown in fig. 5, the inner diameter of the stator tooth core 1 is D, and the distance between the first positioning surface 101 and the axis of the stator tooth core 1 is R, R m -0.05≤R≤R m +0.05，R m 0.8867D-4.0902. When the inner diameter D of the stator tooth core 1 gradually increases, the sizes of the corresponding stator tooth core 1 and stator yoke core 2 also gradually increase, and therefore, R is first selected for R m Value is preset, R m And the inner diameter D of the stator tooth iron core 1 is linearly fitted, and further, the value of R is limited, so that the structural strength of the stator tooth iron core and the stator yoke iron core is prevented from being low, or the stator yoke iron core is bent in the assembling process, and the assembling stress of the tooth yoke separation stator is obviously weakened, and the structural reliability is ensured.
Specifically, as shown in fig. 6 and fig. 11, the stator tooth iron core 1 includes a plurality of tooth iron core laminations 13, the tooth iron core laminations 13 are sequentially pressed and stacked along the axial direction of the stator tooth iron core 1, the tooth iron core laminations 13 are symmetrically distributed relative to the radial direction of the stator tooth iron core 1, the outer diameters of the tooth iron core laminations are different, and along the axial direction of the stator tooth iron core 1, the outer diameters of the tooth iron core laminations gradually increase to the middle of the stator tooth iron core 1 and then gradually decrease to form a first positioning surface of the curved surface of the stator tooth iron core 1. The stator yoke iron core 2 comprises a plurality of yoke iron core stamped sheets 25, the plurality of yoke iron core stamped sheets 25 are sequentially stamped and laminated along the axial direction of the stator yoke iron core 2, the plurality of yoke iron core stamped sheets 25 are symmetrically distributed relative to the radial direction of the stator yoke iron core 2, the inner diameter of each yoke iron core stamped sheet is different in size, and the inner diameters of the yoke iron core stamped sheets are gradually increased to the middle of the stator yoke iron core 2 and then gradually reduced along the axial direction of the stator yoke iron core 2; divide into upper yoke iron core 23 and lower yoke iron core 24 with stator yoke iron core 2, be convenient for punch press a plurality of yoke iron core punching sheets 25, make the cover that upper yoke iron core 23 and lower yoke iron core 24 all can be smooth and easy on stator tooth portion iron core 1, the internal diameter of a plurality of yoke iron core punching sheets of upper yoke iron core 23 is crescent by the link of the free end of upper yoke iron core 23 to upper yoke iron core 23.
In the assembling process, as shown in fig. 3, the winding is installed on the stator tooth core 1, then the upper yoke core is sleeved on the stator tooth core 1 along the arrow direction shown in the figure, after the third positioning surface of the upper yoke core is completely attached to the first portion of the first positioning surface, the lower yoke core is sleeved on the stator tooth core 1 along the arrow shown in the figure until the lower yoke core is connected with the upper yoke core, and simultaneously the fourth positioning surface of the lower yoke core is completely attached to the second portion of the first positioning surface. In the in-process of impressing, at first will place stator tooth iron core 1 and stator yoke iron core 2 are coaxial, in the in-process of impressing, because the bent shape of first locating surface, the free end that leads to going up yoke iron core can not contact with first locating surface, the same thing, the free end of lower yoke iron core also can not contact with the second locating surface at the in-process of impressing, until last yoke is connected the back with lower yoke, after first locating surface and third locating surface and fourth locating surface contacted completely, stator assembly is accomplished, no contact stress between stator tooth iron core and the stator yoke iron core in the assembling process, contact stress when stator tooth iron core impressed stator yoke iron core has been eliminated, and assembly is convenient, still avoid the interior circle of stator to warp, the skeleton breaks and leads to the copper line to be extruded the risk such as skeleton.
The invention also provides a servo motor which comprises the stator assembly.
From the above description, it can be seen that the above-described embodiments of the present invention achieve the following technical effects:
the stator assembly comprises a stator tooth iron core 1 and a stator yoke iron core 2, wherein a first positioning part 10 is arranged on the circumferential surface of the stator tooth iron core 1, the first positioning part 10 extends along the axial direction of the stator tooth iron core 1, and the middle part of the first positioning part 10 protrudes towards the direction far away from the stator tooth iron core 1 relative to the end part of the first positioning part 10; the stator yoke iron core 2 is sleeved on the stator tooth iron core 1, the stator yoke iron core 2 is provided with a second positioning portion 20 matched with the first positioning portion 10, the second positioning portion 20 extends along the axial direction of the stator yoke iron core 2, and the middle portion of the second positioning portion 20 is sunken towards the outer side of the stator yoke iron core 2 relative to the end portion of the second positioning portion 20. When the stator assembly is assembled, in the process that the stator yoke iron core 2 is gradually sleeved on the stator tooth iron core 1, since the middle portions of the first positioning portions 10 project toward the direction away from the stator tooth cores 1 with respect to the end portions of the first positioning portions 10, the middle portions of the second positioning portions 20 are recessed toward the outside of the stator yoke core 2 with respect to the end portions of the second positioning portions 20, this makes the stator tooth core 1 and the stator yoke core 2 have no contact in the process of assembling the stator assembly, and only after the first positioning portion 10 and the second positioning portion 20 are completely attached, the stator tooth core 1 and the stator yoke core 2 will contact to generate stress, the problem that the roundness of the inner circle of the stator is poor due to the concentrated contact stress of the tooth part and the yoke part in the assembling process is avoided, the reliability of the stator assembling process is improved, and the problem that a motor stator in the prior art is easy to deform in the assembling process is solved.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
Spatially relative terms, such as "above … …," "above … …," "above … … surface," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A stator assembly, comprising:
the stator tooth iron core (1), a first positioning part (10) is arranged on the circumferential surface of the stator tooth iron core (1), the first positioning part (10) extends along the axial direction of the stator tooth iron core (1), and the middle part of the first positioning part (10) protrudes towards the direction far away from the stator tooth iron core (1) relative to the end part of the first positioning part (10);
the stator yoke iron core (2) is sleeved on the stator tooth iron core (1), a second positioning part (20) matched with the first positioning part (10) is arranged on the stator yoke iron core (2), the second positioning part (20) extends along the axial direction of the stator yoke iron core (2), and the middle part of the second positioning part (20) is recessed towards the outer side of the stator yoke iron core (2) relative to the end part of the second positioning part (20);
the first positioning portion (10) has a first positioning surface (101) which is attached to the second positioning portion (20), and the first positioning surface (101) is a curved surface; wherein the first positioning surface (101) is an arc-shaped surface;
the second positioning part (20) comprises a third part (21) and a fourth part (22) which are connected with each other, a third positioning surface is arranged on the third part (21), a fourth positioning surface is arranged on the fourth part (22), the third positioning surface and the fourth positioning surface are both attached to the first positioning part (10), and the third positioning surface and/or the fourth positioning surface are/is a curved surface;
the stator yoke core (2) further includes: an upper yoke core (23), the third portion (21) being provided on the upper yoke core (23), the third portion being gradually recessed toward an outer side of the upper yoke core (23) from a free end of the third portion (21) to a connection end of the third portion (21); a lower yoke core (24), the fourth portion (22) being disposed on the lower yoke core (24), the fourth portion being gradually recessed toward an outer side of the lower yoke core (24) from a free end of the fourth portion (22) to a connection end of the fourth portion (22).
2. The stator assembly according to claim 1, wherein the first positioning portion (10) is provided in plurality, and the first positioning portions (10) are provided at intervals in a circumferential direction of the stator tooth core (1).
3. The stator assembly of claim 1, wherein the third locating surface and/or the fourth locating surface is an arcuate surface.
4. A stator assembly according to claim 1, characterized in that the third and fourth parts (21, 22) are arranged symmetrically with respect to a radial cross section of the stator yoke core (2).
5. The stator assembly of claim 1, characterized in that the first detent (10) comprises a plurality of step structures (14), the plurality of step structures (14) being arranged in sequence from an end of the first detent (10) to a middle of the first detent (10).
6. Stator assembly according to claim 1, characterized in that the stator tooth core (1) has an inner diameter D and the distance between the first locating surface (101) and the axis of the stator tooth core (1) is R, R m -0.05≤R≤R m +0.05，R m ＝0.8867D-4.0902。
7. A servo motor comprising a stator assembly, characterized in that the stator assembly is a stator assembly according to any of claims 1-6.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011570897.3A CN112737158B (en) | 2020-12-26 | 2020-12-26 | Stator module and servo motor with same |
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| CN202011570897.3A CN112737158B (en) | 2020-12-26 | 2020-12-26 | Stator module and servo motor with same |
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| CN112737158A CN112737158A (en) | 2021-04-30 |
| CN112737158B true CN112737158B (en) | 2022-08-02 |
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| CN203596670U (en) * | 2013-11-06 | 2014-05-14 | 珠海凯邦电机制造有限公司 | Stator punching sheet, stator iron core and motor |
| CN104600882A (en) * | 2015-01-21 | 2015-05-06 | 广东美芝制冷设备有限公司 | Stator iron core and compressor with the same |
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| JP2932883B2 (en) * | 1993-02-22 | 1999-08-09 | 三菱電機株式会社 | Stator core for motor and method of manufacturing stator core for motor |
| JP4005169B2 (en) * | 1997-04-11 | 2007-11-07 | 東芝キヤリア株式会社 | Compressor |
| JPH1198772A (en) * | 1997-09-12 | 1999-04-09 | Toshiba Corp | Manufacture of stator of motor |
| JP2008104288A (en) * | 2006-10-19 | 2008-05-01 | Matsushita Electric Ind Co Ltd | Capacitor motor, and manufacturing method therefor |
| CN208369331U (en) * | 2018-07-17 | 2019-01-11 | 珠海格力电器股份有限公司 | A kind of assembled stator component, motor and blower |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203596670U (en) * | 2013-11-06 | 2014-05-14 | 珠海凯邦电机制造有限公司 | Stator punching sheet, stator iron core and motor |
| CN104600882A (en) * | 2015-01-21 | 2015-05-06 | 广东美芝制冷设备有限公司 | Stator iron core and compressor with the same |
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