CN211456820U - Stator core, stator module and in-wheel motor - Google Patents
Stator core, stator module and in-wheel motor Download PDFInfo
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- CN211456820U CN211456820U CN202020911017.3U CN202020911017U CN211456820U CN 211456820 U CN211456820 U CN 211456820U CN 202020911017 U CN202020911017 U CN 202020911017U CN 211456820 U CN211456820 U CN 211456820U
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Abstract
The utility model provides a stator core, a stator component and a hub motor, wherein the stator core comprises a yoke iron core and a tooth part iron core, the yoke iron core is provided with a first clamping part, and the first clamping part is one of a bulge and a groove; tooth iron core is equipped with second joint portion, and second joint portion is another kind in protruding and the recess, and protruding and the recess two at least one have elastic deformation ability in yoke iron core's circumference to make protruding and recess elasticity joint cooperation, and can restrict yoke iron core and tooth iron core and keep away from each other. The yoke iron core and the tooth iron core are connected in an interference fit mode through elastic structures, and are strong in fastening force and not prone to loosening.
Description
Technical Field
The utility model relates to the technical field of electric machines, particularly, relate to a stator core, stator module and in-wheel motor.
Background
The hub motor is a motor installed in a wheel, and is also called an electric wheel. The hub motor is usually an outer rotor motor, and the rotor is fixed with the wheel and directly drives the wheel to rotate when the rotor rotates, so that the aim of omitting a transmission mechanism is fulfilled. The stator core of the hub motor is formed by laminating multiple layers of silicon steel sheets.
The inventor researches and discovers that the stator core of the existing hub motor has the following defects:
the stator core comprises a yoke part and a tooth part which are formed by splicing, and the splicing position of the yoke part and the tooth part is easy to loosen.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a stator core, stator module and in-wheel motor, it can improve the fastness of yoke portion iron core and tooth portion iron core concatenation position, is difficult not hard up.
The embodiment of the utility model is realized like this:
in a first aspect, an embodiment of the present invention provides a stator core, including:
the iron core of the yoke part is provided with a first clamping part, and the first clamping part is one of a protrusion and a groove; tooth portion iron core is equipped with second joint portion, second joint portion do protruding with another kind in the recess, protruding with at least one in the recess two is in the circumference of yoke portion iron core has elastic deformation ability, so that protruding with recess elasticity joint cooperation, and can restrict yoke portion iron core with tooth portion iron core keeps away from each other.
Optionally, a through groove is formed in a side surface of the protrusion, which is close to the groove bottom of the groove, so that the protrusion has elastic deformation capacity in the circumferential direction of the yoke iron core.
In an alternative embodiment, the through slots extend in the thickness direction of the stator core.
In an alternative embodiment, the through groove is located at a central position of the projection in the circumferential direction of the stator core.
In an alternative embodiment, the grooves are dovetail grooves and, correspondingly, the lobes are dovetail structures.
In an alternative embodiment, the dovetail angle of the lobes is 1-3 greater than the dovetail angle of the grooves.
In an alternative embodiment, the groove is a "T" shaped groove and correspondingly, the protrusion is a "T" shaped structure.
In alternative embodiments, the through slot is a "V" shaped slot, a "U" shaped slot, or an arcuate slot.
In an alternative embodiment, the opening angle of the "V" shaped groove is 25-35.
In a second aspect, an embodiment of the present invention provides a stator assembly, the stator assembly includes:
the stator core of any one of the preceding embodiments.
The third aspect, the embodiment of the utility model provides an in-wheel motor, in-wheel motor includes:
the stator assembly of the previous embodiment.
The embodiment of the utility model provides a beneficial effect is:
to sum up, this embodiment provides a stator core, including yoke portion iron core and tooth portion iron core, be equipped with first joint portion on the yoke portion iron core, be equipped with second joint portion on the tooth portion iron core, yoke portion iron core and tooth portion iron core are through first joint portion and the cooperation of second joint portion joint, and first joint portion and second joint portion are protruding and the recess of mutually supporting, and at least one in the two of protruding and recess has the elastic deformation ability in yoke portion iron core's circumference. When with yoke portion iron core and tooth portion iron core joint, protruding and recess cooperation, because protruding and recess one of the two has elastic deformation ability, protruding at least one in the two easily takes place elastic deformation in the circumference of yoke portion iron core when extrudeing with the recess, thereby be convenient for go into the recess with protruding card, and because protruding and recess are the elastic clamping structure, the fastening force of the two is bigger, the structure is more firm, make stator core also can not become flexible easily under the vibration condition, use safe and reliable. Meanwhile, the bulge is easy to elastically deform when being clamped and matched with the groove, and the bulge and the groove are of an elastic clamping and matching structure, so that the processing precision requirement of the bulge and the groove is low during processing, the processing difficulty is reduced, and the processing cost is saved.
This embodiment still provides a stator module, including stator core, the manufacturing of being convenient for, and the during operation is difficult not hard up.
The embodiment also provides the in-wheel motor which comprises the stator assembly and is long in service life.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic structural diagram of a stator core according to an embodiment of the present invention;
FIG. 2 is a partially enlarged schematic view of FIG. 1;
fig. 3 is an exploded view of a stator core part structure according to an embodiment of the present invention;
fig. 4 is a schematic view of a modified structure of the first clamping portion according to the embodiment of the present invention;
fig. 5 is a schematic view of a modified structure of the second clamping portion according to the embodiment of the present invention;
fig. 6 is a schematic view of another modified structure of the first clamping portion according to the embodiment of the present invention;
fig. 7 is a schematic view of another modified structure of the second clamping portion according to the embodiment of the present invention.
Icon:
100-a stator core; 110-yoke core; 111-a first snap-in part; 1111-through grooves; 1112-a protrusion; 120-tooth core; 121-a second clamping part; 1211 — bumps.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiment is an embodiment of the present invention, not a whole embodiment. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 to 7, in the present embodiment, a yoke portion and a tooth portion of the stator core 100 are connected and located integrally in a splicing manner, and the connection position of the yoke portion and the tooth portion is firm and reliable, and is not easy to loosen and has a long service life.
Referring to fig. 1 to 3, in the present embodiment, the stator core 100 includes a yoke core 110 and a tooth core 120, the yoke core 110 is provided with a first clamping portion 111, and the first clamping portion 111 is one of a protrusion and a groove; tooth iron core 120 is equipped with second joint portion 121, and second joint portion 121 is another kind in protruding and the recess, and protruding and recess two at least one of them have elastic deformation ability in yoke iron core 110's circumference to realize protruding and recess elasticity joint cooperation, keep away from each other with restriction yoke iron core 110 and tooth iron core 120.
Referring to fig. 3, optionally, a through groove 1111 is disposed on a side surface of the protrusion near the groove bottom of the groove, and two ends of the through groove 1111 in the extending direction are respectively located at two opposite sides of the protrusion in the thickness direction of the stator core 100. In other words, be provided with logical groove 1111 on the arch, lead to groove 1111 and separate two convex parts 1112 of formation with the arch, when two convex parts 1112 of arch and recess block, under the extrusion of recess, two convex parts 1112 are close to each other and produce elastic deformation, the recess is gone into to the protruding card of being convenient for, and the back is gone into to the protruding card, and two convex parts 1112 have the power of recovering deformation to realize protruding elastic clamping with the recess, protruding and recess joint is more firm, and is difficult not hard up.
In this embodiment, the first engaging portion 111 is a protrusion, and the second engaging portion 121 is a groove engaged with the protrusion.
It should be noted that a plurality of first clamping portions 111 are arranged on the circumferential surface of the yoke core 110, the plurality of first clamping portions 111 are uniformly arranged around the axis of the yoke core 110 at intervals, correspondingly, the number of the tooth cores 120 is multiple, the number of the tooth cores 120 is the same as that of the first clamping portions 111, and a plurality of second clamping portions 121 of the tooth cores 120 are in one-to-one clamping fit with the plurality of first clamping portions 111.
Obviously, the number of the first clamping parts 111 is set as required, and is not particularly limited in this embodiment.
Referring to fig. 3 or fig. 6, in the embodiment, the through slot 1111 of the first clamping portion 111 may be a V-shaped slot, a U-shaped slot, an arc-shaped slot, or the like. The shape of the through groove 1111 can be selected as required. The through groove 1111 is formed in the middle of the protrusion in the circumferential direction of the yoke core 110, so that the thickness of the two protrusions 1112 formed by separating the protrusion from the through groove 1111 is kept consistent, the two protrusions 1112 are deformed consistently, and the stress is more uniform after the protrusion is engaged with the groove.
In this embodiment, optionally, when the through groove 1111 is a V-shaped groove, the opening angle of the through groove 1111 is α, and α may be 25 ° to 35 °. The opening angle of the through groove 1111 is an included angle between two groove walls of the through groove 1111, one side of each groove wall is connected, and the other side of each groove wall is far away from each other, so that a V-shaped structure is formed.
The opening angle of the through groove 1111 is 25 °, 30 °, 35 °, or the like.
Note that the thickness of each of the protrusions 1112 whose protrusions are partitioned by the through grooves 1111 may be 1.0 to 1.5mm, where the thickness direction of each of the protrusions 1112 extends in the circumferential direction of the yoke core 110.
In this embodiment, the first engaging portion 111 may be a dovetail structure or a "T" shaped structure, and correspondingly, the second engaging portion 121 may be a dovetail groove or a "T" shaped groove.
When the first catching portion 111 and the second catching portion 121 have dovetail structures which are matched with each other, the dovetail angle of the first catching portion 111 is 1 to 3 degrees larger than that of the second catching portion 121. The first clamping portion 111 and the second clamping portion 121 are clamped to form interference fit, and the interference magnitude is 0.03-0.06 mm.
For example, the dovetail angle of the first catching portion 111 is greater than the dovetail angle of the second catching portion 121 by 1 °, 2 °, or 3 °.
Optionally, the dovetail angle of the first snap-in portion 111 is β, β may be 55 ° -60 °, for example, the dovetail angle of the first snap-in portion 111 may be 55 °, 58 °, 60 °, or the like; the second catching portion 121 has a dovetail angle γ, which may be 53 ° -58 °, for example, the second catching portion 121 may have a dovetail angle of 53 °, 55 °, 58 °, or the like. The dovetail angle of the first clamping portion 111 is 1-3 degrees larger than that of the second clamping portion 121.
In this embodiment, optionally, the shape of the through groove 1111 and the shape of the protrusion are not interfered with each other, for example, when the protrusion has a dovetail structure, the through groove 1111 may be a "V" shaped groove, a "U" shaped groove, or an arc-shaped groove. Similarly, when the through slots 1111 are "V" shaped slots, the protrusions may be dovetail structures or "T" shaped structures, etc.
Referring to fig. 4 or fig. 6, in this embodiment, optionally, when the first clamping portion 111 is in a "T" shape, the first clamping portion 111 has a vertical beam connected to the yoke core 110 and a cross beam perpendicular to the vertical beam, two ends of the cross beam respectively protrude from two opposite sides of the vertical beam, and the vertical beam and the cross beam form a "T" shape. Optionally, two ends of the cross beam are arranged to be arc-shaped surfaces, so that the cross beam can be conveniently clamped into the second clamping portion 121. The interference of the first clamping portion 111 and the second clamping portion 121 is 0.05-0.08 mm.
Referring to fig. 6 and 7, further, when the first clamping portion 111 and the second clamping portion 121 are configured as a T-shaped structure that is clamped and matched with each other, a protruding point 1211 matched with the through groove 1111 is disposed at the bottom of the second clamping portion 121, and when the first clamping portion 111 is clamped with the second clamping portion 121, the protruding point 1211 is located in the through groove 1111, so as to improve the clamping firmness.
In this embodiment, it should be noted that the yoke core 110 and the tooth core 120 are connected into a whole in a splicing manner, and the tooth core 120 and the yoke core 110 may adopt different types of silicon steel sheets, for example:
the tooth yoke part can adopt magnetic conductive material schemes with different properties:
1. the tooth iron core 120 is made of oriented silicon steel, and the yoke iron core 110 is made of non-oriented silicon steel, so that the high performance of the oriented silicon steel of the tooth iron core 120 in the dominant orientation direction can be fully exerted, and the advantage of isotropy of the non-oriented silicon steel of the yoke iron core 110 is exerted.
2. The tooth iron core 120 and the yoke iron core 110 adopt non-oriented silicon steel with different grades according to the requirements of different magnetic flux densities and losses, so that the material performance can be effectively exerted, and the cost is reduced.
3. The tooth iron core 120 and the yoke iron core 110 adopt different powder metallurgy ferromagnetic material combinations according to different magnetic flux densities and loss requirements, so that the material performance can be effectively exerted, and the cost is reduced.
In the stator core 100 provided by this embodiment, the through groove 1111 is disposed on the protrusion, so that the protrusion has a certain elasticity, thereby reducing the requirement on the processing precision, and allowing the protrusion to be easily inserted into the groove. In addition, the protrusions have elasticity, and the fastening force of the tooth iron cores 120 and the yoke iron cores 110 is enhanced, so that the in-wheel motor cannot be easily loosened under the vibration condition.
In other embodiments, at least part of the protrusion may be provided as an elastic portion, so that the protrusion has elastic deformation capability in the circumferential direction of the yoke core 110. Similarly, at least a part of the structure in which the yoke core 110 or the tooth core 120 constitutes the groove may be configured as an elastic portion, so that the groove has an elastic deformation capability in the circumferential direction of the yoke core 110.
The embodiment also provides a stator assembly, which comprises the stator core 100, and the stator assembly has a firm structure and low processing cost.
The embodiment also provides an in-wheel motor, including foretell stator module, still include the rotor subassembly, stator module and rotor subassembly cooperation, in-wheel motor use safe and reliable. It is apparent that the stator assembly and stator core 100 may also be applied to other motors, not limited to hub motors.
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 (10)
1. A stator core, comprising:
the iron core of the yoke part is provided with a first clamping part, and the first clamping part is one of a protrusion and a groove; tooth portion iron core is equipped with second joint portion, second joint portion do protruding with another kind in the recess, protruding with at least one in the recess two is in the circumference of yoke portion iron core has elastic deformation ability, so that protruding with recess elasticity joint cooperation, and can restrict yoke portion iron core with tooth portion iron core keeps away from each other.
2. The stator core of claim 1, wherein:
the side face, close to the groove bottom, of the protrusion is provided with a through groove, so that the protrusion is in elastic deformation capacity in the circumferential direction of the yoke iron core.
3. The stator core of claim 2, wherein:
the through groove extends in the thickness direction of the stator core.
4. The stator core of claim 2, wherein:
the through groove is located at the middle position of the protrusion in the circumferential direction of the stator core.
5. The stator core of claim 2, wherein:
the through groove is a V-shaped groove, a U-shaped groove or an arc-shaped groove.
6. The stator core of claim 5, wherein:
the opening angle of the V-shaped groove is 25-35 degrees.
7. The stator core of claim 1, wherein:
the groove is a dovetail groove, correspondingly, and the protrusion is of a dovetail structure.
8. The stator core of claim 1, wherein:
the groove is a T-shaped groove, and correspondingly, the bulge is of a T-shaped structure.
9. A stator assembly, characterized in that the stator assembly comprises:
the stator core of any one of claims 1-8.
10. An in-wheel motor, characterized in that, the in-wheel motor includes:
the stator assembly of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911017.3U CN211456820U (en) | 2020-05-26 | 2020-05-26 | Stator core, stator module and in-wheel motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020911017.3U CN211456820U (en) | 2020-05-26 | 2020-05-26 | Stator core, stator module and in-wheel motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211456820U true CN211456820U (en) | 2020-09-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020911017.3U Active CN211456820U (en) | 2020-05-26 | 2020-05-26 | Stator core, stator module and in-wheel motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211456820U (en) |
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2020
- 2020-05-26 CN CN202020911017.3U patent/CN211456820U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211009 Address after: 100000 room c-0063, 2f, building 3, yard 30, Shixing street, Shijingshan District, Beijing Patentee after: Beijing Cuifeng Capital Investment Co.,Ltd. Address before: 030000 floor 6, building 1, No. 4, Dongyi second lane, Taiyuan Xuefu Park, Shanxi comprehensive reform demonstration zone, Xiaodian District, Taiyuan City, Shanxi Province Patentee before: SHANXI DONGHUI NEW ENERGY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd. |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221207 Address after: 030000 Rooms 601, 602 and 605, Floor 6, Building 1, No. 4, Dong'e'er Lane, Taiyuan Xuefu Park, Taiyuan Comprehensive Reform Demonstration Zone, Shanxi Province Patentee after: SHANXI DONGHUI NEW ENERGY AUTOMOBILE RESEARCH INSTITUTE Co.,Ltd. Address before: Room c-0063, 2 / F, building 3, yard 30, Shixing street, Shijingshan District, Beijing Patentee before: Beijing Cuifeng Capital Investment Co.,Ltd. |