CN217692845U - Rotor core assembly, motor rotor structure and motor - Google Patents
Rotor core assembly, motor rotor structure and motor Download PDFInfo
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- CN217692845U CN217692845U CN202220767190.XU CN202220767190U CN217692845U CN 217692845 U CN217692845 U CN 217692845U CN 202220767190 U CN202220767190 U CN 202220767190U CN 217692845 U CN217692845 U CN 217692845U
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 92
- 230000000694 effects Effects 0.000 abstract description 4
- 229910000831 Steel Inorganic materials 0.000 description 11
- 239000010959 steel Substances 0.000 description 11
- 230000001681 protective effect Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 229910003460 diamond Inorganic materials 0.000 description 3
- 239000010432 diamond Substances 0.000 description 3
- 230000005389 magnetism Effects 0.000 description 3
- 229920000049 Carbon (fiber) Polymers 0.000 description 2
- 239000004917 carbon fiber Substances 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 229910000967 As alloy Inorganic materials 0.000 description 1
- 241000533950 Leucojum Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The utility model relates to a rotor core subassembly, electric motor rotor structure and motor, this rotor core subassembly include first iron core, second iron core and connecting piece, the second iron core is located the outer fringe of first iron core, connecting piece are located between first iron core and the second iron core and are connected first iron core and second iron core. One end close to the second iron core through setting up the connecting piece is provided with first guide part, and the position that corresponds with first guide part on the second iron core is provided with the second guide part with first guide part direction complex to the location cooperation through first guide part and second guide part plays the location guide effect to the assembly of second iron core, and then the second iron core rapid Assembly of being convenient for is on first iron core, and whole assembly easy operation is just high-efficient.
Description
Technical Field
The utility model relates to an electric motor rotor technical field especially relates to a rotor core subassembly, electric motor rotor structure and motor.
Background
An electric machine typically comprises a machine rotor structure, a stator, etc. The motor rotor structure generally includes a first core and a plurality of second cores assembled with the first core.
However, when the first core and the plurality of second cores are assembled, the first core and the second cores are not conveniently assembled, so that the assembly efficiency between the first core and the second cores is low.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the present disclosure provides a rotor core assembly, a motor rotor structure and a motor.
In a first aspect, the present disclosure provides a rotor core assembly, including a first core, a second core, and a connecting member, where the second core is disposed at an outer edge of the first core, and the connecting member is located between the first core and the second core and connects the first core and the second core;
one end of the connecting piece, which is close to the second iron core, is provided with a first guide part, and a second guide part which is matched with the first guide part in a guide mode is arranged at the position, corresponding to the first guide part, on the second iron core.
According to an embodiment of the present disclosure, the first guide portion includes a guide step provided at an end of the connecting member close to the second core, and the second guide portion includes a guide groove adapted to the guide step.
According to an embodiment of the present disclosure, the guide step gradually increases in size in a radial direction perpendicular to the first core in a direction from the first core to the second core.
According to an embodiment of the present disclosure, the guide step is dovetail-shaped.
According to an embodiment of the present disclosure, the second core includes a plurality of second cores, and the plurality of second cores are arranged at intervals along a circumferential direction of the first core;
the connecting pieces comprise a plurality of connecting pieces, and the connecting pieces correspond to the second iron cores one to one.
According to an embodiment of the present disclosure, the second iron core includes along two at least second sub-iron cores that radially distribute in proper order of first iron core, each all be provided with on the second sub-iron core the second guide part, be provided with on the connecting piece along at least two of radially distributing in proper order of first iron core first guide part, first guide part with second guide part one-to-one.
According to an embodiment of the present disclosure, a first connecting portion is disposed at an end of the connecting member close to the first iron core, a second connecting portion is disposed at a position on the first iron core corresponding to the first connecting portion, and the first connecting portion is connected to the second connecting portion.
According to an embodiment of the present disclosure, first connecting portion are including locating being close to of connecting piece the joint boss of the one end of first iron core, second connecting portion include with joint boss joint complex draw-in groove.
In a second aspect, the present disclosure provides an electric machine rotor structure comprising a rotor core assembly.
In a third aspect, the present disclosure provides an electric machine comprising an electric machine rotor structure.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the utility model provides a rotor core subassembly, electric motor rotor structure and motor, this rotor core subassembly include first iron core, second iron core and connecting piece, and the outer fringe of first iron core is located to the second iron core, and the connecting piece is located between first iron core and the second iron core and connects first iron core and second iron core. One end close to the second iron core through setting up the connecting piece is provided with first guide part, and the position that corresponds with first guide part on the second iron core is provided with the second guide part with first guide part direction complex to the location cooperation through first guide part and second guide part plays the location guide effect to the assembly of second iron core, and then the second iron core rapid Assembly of being convenient for is on first iron core, and whole assembly easy operation is just high-efficient.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a front view of a first electric machine rotor configuration according to an embodiment of the present disclosure;
FIG. 2 is an isometric view of a first electric machine rotor configuration according to the disclosed embodiment;
FIG. 3 is a front view of a second electric machine rotor configuration according to an embodiment of the present disclosure;
FIG. 4 is an isometric view of a second electric machine rotor configuration according to an embodiment of the present disclosure;
FIG. 5 is a schematic view of a first core of a rotor core assembly according to an embodiment of the present disclosure;
FIG. 6 is a schematic view of a first and second core of a rotor core assembly according to an embodiment of the present disclosure;
FIG. 7 is a schematic view of a second type of secondary core of the rotor core assembly according to an embodiment of the present disclosure;
FIG. 8 is a schematic view of a first connection of a rotor core assembly according to an embodiment of the present disclosure;
FIG. 9 is a schematic view of a second type of connection for a rotor core assembly according to an embodiment of the present disclosure;
fig. 10 is an assembly view of the first core, the second core and the connecting member of the first rotor core assembly according to the embodiment of the present disclosure;
fig. 11 is an assembly diagram of a first core, a second core, a connecting member, and magnetic steel of the first rotor core assembly according to the embodiment of the disclosure.
Reference numerals:
1. a rotor core assembly; 11. a first iron core; 111. a containing groove; 112. a second connecting portion; 12. a second core; 121. a second guide portion; 122. a second sub-core; 123. a first side surface; 124. a second side surface; 2. a protective sleeve; 3. a connecting member; 31. a first guide portion; 32. a first connection portion; 4. and (7) magnetic steel.
Detailed Description
In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.
Example one
Referring to fig. 1 to 11, the present embodiment provides a rotor core assembly 1, which can be used in a rotor structure of an electric machine. Specifically, this rotor core assembly 1 includes first iron core 11, second iron core 12 and connecting piece 3, and the outer fringe of first iron core 11 is located to second iron core 12, and connecting piece 3 is located between first iron core 11 and second iron core 12 and connects first iron core 11 and second iron core 12. In addition, the connecting piece 3 can be made of materials with high structural strength, such as alloy or metal.
That is to say, the rotor core subassembly 1 of this embodiment is not integrated into one piece, but link together through connecting piece 3 after first iron core 11 and second iron core 12 are fashioned respectively, compare in current first iron core, the rotor core subassembly that second iron core and magnetism isolating bridge integrated into one piece formed, the relatively poor magnetism isolating bridge of structural strength has been cancelled to this embodiment, but connect first iron core 11 and second iron core 12 through connecting piece 3, consequently, the rotor core subassembly 1's of this embodiment bulk strength is better, more be difficult to take place the damage, therefore can be used for the operating mode of high-speed operation, and can avoid setting up the easy magnetic leakage that magnetism isolating bridge leads to among the prior art, cause the problem that motor performance is not good.
In specific implementation, the connection structure between the connection member 3 and the second iron core 12 may be: one end of the connecting piece 3 close to the first iron core 11 is connected with the first iron core 11, one end of the connecting piece 3 close to the second iron core 12 is provided with a first guiding part 31, and a second guiding part 121 which is matched with the first guiding part 31 in a guiding way is arranged on the second iron core 12 corresponding to the first guiding part 31. That is to say, through the guiding cooperation of the first guiding portion 31 and the second guiding portion 121, the installation guiding function for the second iron core 12 can be performed when the second iron core 12 is assembled, so that the second iron core 12 can be more conveniently and quickly positioned and assembled on the connecting piece 3, and the indirect connection assembly between the second iron core 12 and the first iron core 11 is further simple and efficient.
Exemplarily, the first guide portion 31 includes a guide step near one end of the second core 12, which is disposed on the connecting member 3, and the second guide portion 121 includes a guide groove adapted to the guide step, so that the operation of the connecting member 3 when being assembled with the second core 12 is simpler through the positioning fit of the guide step and the guide groove, and thus the quick positioning and installation between the first core 11 and the second core 12 is realized.
Or, in other implementation manners, the first guide portion 31 may include a guide groove disposed at one end of the connecting member 3 close to the second iron core 12, and the second guide portion 121 includes a guide step adapted to the guide groove, so that the operation of assembling the connecting member 3 and the second iron core 12 is simpler through the positioning and matching between the guide step and the guide groove.
Referring to fig. 8 and 9, in a direction from the first core 11 to the second core 12 (referring to a z direction shown in fig. 9), the size of the guide step in a direction perpendicular to the radial direction of the first core 11 is gradually increased, that is, the guide step may be a dovetail-shaped guide step as shown in fig. 8, and similarly, referring to fig. 9, the guide groove may also be a dovetail-shaped guide groove matching the dovetail-shaped guide step, and the assembly of the second core 12 and the connecting member 3 may be made simpler and more efficient by the positioning cooperation between the dovetail-shaped guide step and the dovetail-shaped guide groove.
In this embodiment, the second cores 12 may specifically include a plurality of second cores 12, and the plurality of second cores 12 are arranged at intervals along the circumferential direction of the first core 11; the connecting members 3 include a plurality of connecting members 3, and the connecting members 3 correspond to the second cores 12 one to one. That is, each of the second cores 12 is connected to the first core 11 through one of the connection members 3. Specifically, the second cores 12 may have the same shape and size, and the connecting members 3 may have the same size, so as to facilitate manufacturing.
Specifically, the first core 11 may have a snowflake shape as shown in fig. 5, and the second core 12 may have a fan shape as shown in fig. 6.
Referring to fig. 5, the outer edge of the first core 11 is provided with an accommodating groove 111 corresponding to each second core 12, the second cores 12 are provided in the corresponding accommodating grooves 111, and after the second cores 12 are provided in the accommodating grooves 111, the outer edge of the first core 11 and the outer edge of the second cores 12 may be substantially located on a virtual circle that uses the radius r of the first core 11 as a circle.
Furthermore, the connecting member 3 may be made of a non-magnetic material. In this embodiment, the first iron core 11 and the second iron core 12 are connected by the connecting member 3 having non-magnetic conductivity, so that the problem of magnetic leakage easily caused by connecting the first iron core 11 and the second iron core 12 by a magnetic conductive structure can be avoided, that is, the first iron core 11 and the second iron core 12 are connected by the connecting member 3 having non-magnetic conductivity, and therefore, not only can the connection strength and reliability of the first iron core 11 and the second iron core 12 be ensured, but also the performance of the motor can be ensured not to be damaged.
The non-magnetic conductive connecting element 3 can be made of non-magnetic steel 4, or can be made of a non-metallic material.
In this embodiment, when the second cores 12 include a plurality of second cores 12 and the plurality of second cores 12 are disposed at intervals along the circumferential direction of the first core 11, the plurality of second cores 12 may form a group, and the second cores 12 in the same group are located on a single virtual circle of the same radius with the center of the first core 11 as the center of the circle. Of course, in other implementation manners, the second cores 12 may also be provided with multiple groups, and the second cores 12 in different groups are sequentially arranged at intervals along the radial direction of the first core 11, that is, the second cores 12 in different groups are located on the virtual circles with different radii and using the center of circle of the first core 11 as the center of circle.
It should be noted that the number of the second cores 12 and the number of the connecting members 3 may be determined according to the number of poles of the motor having the rotor core assembly 1. Illustratively, the number of the second cores 12 and the number of the connecting members 3 may be 6 or 8.
For example, when a plurality of second cores 12 are formed into a group, as shown in fig. 1, 2, 6 and 8, the present embodiment provides a rotor core assembly 1, in which the second cores 12 are complete parts, and a first guide portion 31 is provided at one end of the connecting member 3 near the second cores 12.
For example, when the plurality of second cores 12 have a plurality of sets sequentially arranged along the radial direction of the first core 11, as shown in fig. 3, 4, 7 and 9, the present embodiment provides another rotor core assembly 1, wherein the second core 12 includes a plurality of independent components, that is, includes at least two second sub-cores 122, each of the second sub-cores 122 includes one second guide portion 121, and the position of the connecting member 3 in guiding engagement with the second core 12, which corresponds to each of the second sub-cores 122, has a first guide portion 31 in engagement with the second sub-core 122. That is, each of the second cores 12 includes the same number of second sub-cores 122 as the number of first guide portions 31 provided on the connecting member 3 to be coupled with the second sub-cores 122.
Illustratively, referring to fig. 3, 4, 7 and 9, the second core 12 may include two second sub-cores 122, each of the second sub-cores 122 is provided with one second guide 121, and the connection member 3 includes two first guides 31.
Alternatively, in another implementation, the second core 12 may include three second sub-cores 122, each second sub-core 122 is provided with one second guide portion 121, and the connecting member 3 includes three first guide portions 31. Specifically, the number of the second sub-cores 122 included in each second core 12 and the number of the first guide portions 31 provided on the connecting member 3 may be set according to actual needs.
In specific implementation, the connection structure between the first iron core 11 and the connecting member 3 may be: one end of the connecting piece 3 close to the first iron core 11 is provided with a first connecting part 32, a second connecting part 112 is arranged on the first iron core 11 corresponding to the first connecting part 32, and the first connecting part 32 is connected with the second connecting part 112. The assembly between the first core 11 and the connecting member 3 can be more reliably and stably achieved by the connection cooperation of the first connecting portion 32 and the second connecting portion 112.
Exemplarily, the first connection portion 32 includes a clamping boss disposed at one end of the connection member 3 close to the first iron core 11, and the second connection portion 112 includes a clamping groove clamped with the clamping boss, that is, the connection member 3 and the first iron core 11 can be connected to each other through clamping cooperation of the clamping boss and the clamping groove.
Specifically, the joint boss can be a rectangular structure, and the clamping groove is a rectangular clamping groove matched with the joint boss of the rectangular structure. Or, the clamping boss can also be of a diamond structure or a conical structure, and the clamping groove is a diamond groove matched with the diamond structure or a conical groove matched with the conical structure.
Of course, in other implementations, the first connection portion 32 may be a hook, and the second connection portion 112 is a snap ring that is engaged with the first connection portion 32. Alternatively, the first connection portion 32 and the second connection portion 112 are both threaded holes, and fasteners such as bolts are disposed in the threaded holes to connect the first core 11 and the connection member 3.
In addition, a protective sleeve 2 can be sleeved on the periphery of the rotor core assembly 1. To improve the structural strength of the rotor core assembly 1. During concrete implementation, in order to ensure that protective sheath 2 itself has sufficient intensity to can be applicable to the operating mode of the high-speed operation of motor, can set up protective sheath 2 and adopt the carbon fiber material to make, protective sheath 2 is carbon fiber protective sheath 2 promptly. Alternatively, the protective sleeve 2 may be made of an alloy material.
Referring to fig. 1 and 3, the second core 12 is provided with one magnetic steel 4 between both side surfaces in the circumferential direction of the first core 11 and the first core 11. The magnetic steel 4 is used for playing a role in stabilizing a magnetic field, and the specific action principle of the magnetic steel 4 can refer to descriptions in the related art, which is not described in detail in this embodiment.
The second core 12 has a first side surface 123 and a second side surface 124 which are arranged oppositely along the circumferential direction of the first core 11, and a magnetic steel 4 is arranged between the first side surface 123 and the first core 11 and between the second side surface 124 and the first core 11. That is to say, one magnetic steel 4 is provided between two opposite groove walls of one accommodating groove 111 and the second iron core 12, that is, one accommodating groove 111 is provided with one second iron core 12 and two magnetic steels 4.
The assembly process of the motor rotor structure of the embodiment can be briefly summarized as follows: firstly, the second iron cores 12 are respectively arranged in the accommodating grooves 111 at the outer edges of the corresponding first iron cores 11, and then the second iron cores 12 are connected to the first iron cores 11 through the non-magnetic connecting pieces 3; next, a magnetic steel 4 is inserted between the second iron core 12 and the first iron core 11, and after the magnetic steel 4 is inserted, the protective sleeve 2 is sleeved on the peripheries of the second iron core 12 and the first iron core 11 to finally form a complete motor rotor structure as shown in fig. 1 to 4.
Example two
Referring to fig. 1 to 11, the present embodiment further provides a rotor structure of an electric machine, including a rotor core assembly 1.
The specific structure and implementation principle of the rotor core assembly 1 in this embodiment are the same as those of the rotor core assembly 1 provided in the first embodiment, and the same or similar technical effects can be brought about, which are not described in detail herein any more, and reference may be specifically made to the description of the first embodiment.
EXAMPLE III
Referring to fig. 1 to 11, the present embodiment further provides a motor including a motor rotor structure.
The specific structure and implementation principle of the motor rotor structure in this embodiment are the same as those of the motor rotor structure provided in the second embodiment, and the same or similar technical effects can be brought.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A rotor core assembly is characterized by comprising a first iron core, a second iron core and a connecting piece, wherein the second iron core is arranged at the outer edge of the first iron core;
one end of the connecting piece, which is close to the second iron core, is provided with a first guide part, and a second guide part which is matched with the first guide part in a guide mode is arranged at the position, corresponding to the first guide part, on the second iron core.
2. The rotor core assembly according to claim 1, wherein the first guide portion includes a guide step provided at an end of the connecting member near the second core, and the second guide portion includes a guide groove adapted to the guide step.
3. The rotor core assembly according to claim 2, wherein the guide step is gradually increased in size in a direction perpendicular to a radial direction of the first core in a direction from the first core to the second core.
4. The rotor core assembly according to claim 3, wherein said guide step is dovetail shaped.
5. The rotor core assembly according to claim 1, wherein the second core includes a plurality of second cores arranged at intervals in a circumferential direction of the first core;
the connecting pieces comprise a plurality of connecting pieces, and the connecting pieces correspond to the second iron cores one to one.
6. The rotor core assembly according to any one of claims 1 to 5, wherein the second core includes at least two second sub-cores sequentially distributed along a radial direction of the first core, each of the second sub-cores is provided with the second guide portion, the connecting member is provided with at least two first guide portions sequentially distributed along the radial direction of the first core, and the first guide portions are in one-to-one correspondence with the second guide portions.
7. The rotor core assembly according to any one of claims 1 to 5, wherein a first connecting portion is provided at an end of the connecting member adjacent to the first core, a second connecting portion is provided at a position on the first core corresponding to the first connecting portion, and the first connecting portion is connected to the second connecting portion.
8. The rotor core assembly according to claim 7, wherein the first connecting portion comprises a clamping boss disposed at an end of the connecting member close to the first core, and the second connecting portion comprises a clamping groove in clamping fit with the clamping boss.
9. A rotor structure for an electrical machine, comprising a rotor core assembly according to any one of claims 1 to 8.
10. An electrical machine comprising an electrical machine rotor structure according to claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767190.XU CN217692845U (en) | 2022-03-31 | 2022-03-31 | Rotor core assembly, motor rotor structure and motor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220767190.XU CN217692845U (en) | 2022-03-31 | 2022-03-31 | Rotor core assembly, motor rotor structure and motor |
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| CN217692845U true CN217692845U (en) | 2022-10-28 |
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| CN202220767190.XU Active CN217692845U (en) | 2022-03-31 | 2022-03-31 | Rotor core assembly, motor rotor structure and motor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116404777A (en) * | 2023-03-01 | 2023-07-07 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
| WO2024104600A1 (en) * | 2022-11-18 | 2024-05-23 | Gkn Automotive Limited | Rotor for an electric machine and electric machine |
| WO2024120543A1 (en) * | 2022-12-29 | 2024-06-13 | 天蔚蓝电驱动科技(江苏)有限公司 | Motor rotor and method for manufacturing motor rotor |
-
2022
- 2022-03-31 CN CN202220767190.XU patent/CN217692845U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024104600A1 (en) * | 2022-11-18 | 2024-05-23 | Gkn Automotive Limited | Rotor for an electric machine and electric machine |
| WO2024120543A1 (en) * | 2022-12-29 | 2024-06-13 | 天蔚蓝电驱动科技(江苏)有限公司 | Motor rotor and method for manufacturing motor rotor |
| CN116404777A (en) * | 2023-03-01 | 2023-07-07 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
| CN116404777B (en) * | 2023-03-01 | 2024-03-05 | 天蔚蓝电驱动科技(江苏)有限公司 | Rotor without main magnetic bridge and manufacturing method of rotor |
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