CN219999128U - Motor rotor structure, motor and car - Google Patents
Motor rotor structure, motor and car Download PDFInfo
- Publication number
- CN219999128U CN219999128U CN202321506605.9U CN202321506605U CN219999128U CN 219999128 U CN219999128 U CN 219999128U CN 202321506605 U CN202321506605 U CN 202321506605U CN 219999128 U CN219999128 U CN 219999128U
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- Prior art keywords
- rotor core
- motor
- magnetic steel
- rotor
- fixing base
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 95
- 239000010959 steel Substances 0.000 claims abstract description 95
- 230000013011 mating Effects 0.000 claims abstract description 13
- 239000003292 glue Substances 0.000 claims description 19
- 230000002093 peripheral effect Effects 0.000 claims description 19
- 230000001681 protective effect Effects 0.000 claims description 11
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 6
- 239000004917 carbon fiber Substances 0.000 claims description 6
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 6
- 239000003365 glass fiber Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The utility model provides a motor rotor structure, a motor and an automobile, and relates to the technical field of automobile parts. This scheme, a plurality of fixing bases are established to the interval on rotor core's the periphery wall, and the magnet steel is located between two adjacent fixing bases, establishes connecting portion through the both ends at fixing base along circumference direction, and mating portion is established at the both ends of magnet steel along circumference direction, utilizes mating portion and connecting portion's cooperation to be connected to realize being connected between magnet steel and the fixing base, when the rotor is at high-speed operation, the centrifugal force of magnet steel is passed on rotor core through connecting portion, the mating portion of mutual matching, thereby avoids the magnet steel to break away from.
Description
Technical Field
The utility model relates to the technical field of motors, in particular to a motor rotor structure, a motor and an automobile.
Background
The motor is an important component of automobiles, especially new energy automobiles, and the performance, especially the running rotation speed, of the motor is required to be higher and higher. The rotor of the motor comprises magnetic steel and a rotor core, and the existing magnetic steel is generally directly adhered to the peripheral wall of the rotor core. When the motor runs at high speed, the magnetic steel is easily separated from the rotor core under the action of centrifugal force, so that the motor is in fault.
Disclosure of Invention
The utility model aims to solve the technical problem that the existing magnetic steel is easy to separate from a rotor core.
In a first aspect, the utility model provides a motor rotor structure, which comprises a rotor core and magnetic steels, wherein a plurality of fixing seats are arranged on the peripheral wall of the rotor core along the circumferential direction, connecting portions are respectively arranged at two ends of the fixing seats along the circumferential direction, the magnetic steels are positioned between two adjacent fixing seats, matching portions matched with the connecting portions are respectively arranged at two ends of the magnetic steels along the circumferential direction, and the adjacent magnetic steels and the fixing seats are connected with the matching portions in a matching manner through the connecting portions.
Compared with the prior art, the motor rotor structure has at least the following advantages:
a plurality of fixing seats can be arranged on the peripheral wall of the rotor core at intervals along the circumferential direction, the magnetic steel is positioned between two adjacent fixing seats, connecting portions are respectively arranged at two ends of the fixing seats along the circumferential direction, matching portions are respectively arranged at two ends of the magnetic steel along the circumferential direction, matching between the matching portions and the connecting portions is utilized to realize connection between the magnetic steel and the fixing seats, when the rotor runs at a high speed, centrifugal force of the magnetic steel can be transmitted to the fixing seats through the mutually matched connecting portions and the matching portions, namely, the centrifugal force is transmitted to the rotor core, so that the magnetic steel is prevented from being separated from the rotor core, and normal use of the motor is ensured.
Optionally, the connecting part is a protrusion arranged on the fixing seat, and the matching part is a groove arranged on the magnetic steel; or the connecting part is a groove arranged on the fixing seat, and the matching part is a protrusion arranged on the magnetic steel; the adjacent magnetic steel and the fixed seat are connected with the groove in a plug-in fit manner through the protrusions.
Optionally, the middle part of the magnetic steel is convexly curved away from the axis of the rotor core to match with the peripheral wall of the rotor core.
Optionally, an end of the magnetic steel facing the axis of the rotor core is bonded to the outer peripheral wall of the rotor core.
Optionally, the bonding is glue connection, and a glue containing groove is formed in the peripheral wall of the rotor core, which is used for being in glue connection with the magnetic steel.
Optionally, the motor rotor structure further comprises a rotor protection sleeve, and the rotor protection sleeve is arranged on one side, away from the axis of the rotor core, of the magnetic steel.
Optionally, the rotor protective sleeve is made of carbon fiber, glass fiber or steel.
In a second aspect, the present utility model provides a motor, including a motor shaft and the above-mentioned motor rotor structure, where a rotor core of the motor rotor structure is disposed on the motor shaft. Compared with the prior art, the motor has the advantages that the motor rotor structure is the same as that of the motor rotor structure, and the description is omitted.
Optionally, the rotor core is integrally formed with the motor shaft.
In a third aspect, the present utility model provides an automobile comprising the motor described above. Compared with the prior art, the automobile has the advantages same as the motor, and is not repeated.
Drawings
Fig. 1 is a schematic structural view of a rotor structure of an electric motor according to an embodiment of the present utility model;
FIG. 2 is a schematic structural diagram of a magnetic steel according to an embodiment of the present utility model;
fig. 3 is a schematic structural view of a rotor core according to an embodiment of the present utility model;
fig. 4 is an enlarged schematic view at a in fig. 3.
Reference numerals illustrate:
1. a rotor core; 11. a fixing seat; 111. a connection part; 12. a glue containing groove; 2. magnetic steel; 21. a mating portion; 3. rotor protective sheath.
Detailed Description
In order that the above objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings.
In the description of the present utility model, unless explicitly stated and limited otherwise, the terms "mounted," "connected," "coupled," and "mated" are to be construed broadly, and may be, for example, fixedly coupled, detachably coupled, or integrally coupled; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those skilled in the art according to the specific circumstances.
In addition, in the description of the present utility model, it should be noted that terms such as "upper", "lower", "front", "rear", etc. in the embodiments indicate terms of orientation, and only for simplifying the positional relationship of the description based on the drawings of the specification, it does not represent that the elements and devices etc. referred to must be operated according to the operations and methods and configurations defined in the specific orientation and limitation of the present utility model, and such orientation terms do not constitute limitations of the present utility model.
As shown in fig. 1, an embodiment of the present utility model provides a motor rotor structure, including a rotor core 1 and magnetic steels 2, wherein a plurality of fixing seats 11 are circumferentially arranged on an outer peripheral wall of the rotor core 1, two ends of each fixing seat 11 in the circumferential direction are respectively provided with a connecting portion 111, the magnetic steels 2 are located between two adjacent fixing seats 11, two ends of each magnetic steel 2 in the circumferential direction are respectively provided with a matching portion 21 matched with the connecting portion 111, and adjacent magnetic steels 2 and the fixing seats 11 are connected with the matching portion 21 in a matching manner through the connecting portions 111.
In this embodiment, the fixing base 11 is integrally formed with the rotor core 1, the outer peripheral wall of the rotor core 1 protrudes outwards in the radial direction to form the fixing base 11, the fixing bases 11 are arranged at intervals along the circumferential direction of the rotor core 1, the number of the fixing bases 11 is determined according to the number of the magnetic steels 2 to be installed, the fixing bases 11 and the magnetic steels 2 are alternately arranged, and the number of the two is the same; or, a magnetic steel groove is formed between two adjacent fixing seats 11 and the peripheral wall of the rotor core 1, and the magnetic steel 2 is arranged in the magnetic steel groove.
Through establishing connecting portion 111 respectively at fixing base 11 along the both ends of circumference, magnet steel 2 is followed establish mating portion 21 respectively at the both ends of circumference, utilizes mating portion 21 and connecting portion 111's cooperation to realize being connected between magnet steel 2 and the fixing base 11, when the rotor is at high-speed operation, the centrifugal force of magnet steel 2 is passed on fixing base 11 through connecting portion 111, mating portion 21 that match each other, also is passed on rotor core 1 promptly, thereby avoids magnet steel 2 to break away from.
As shown in fig. 1 to 4, optionally, the connecting portion 111 is a protrusion provided on the fixing base 11, and the mating portion 21 is a groove provided on the magnetic steel 2; or, the connecting portion 111 is a groove formed on the fixing base 11, and the mating portion 21 is a protrusion formed on the magnetic steel 2; the adjacent magnetic steel 2 and the fixed seat 11 are connected with the groove in a plug-in fit manner through the protrusions.
In this embodiment, the two ends of the fixing base 11 along the circumferential direction are protruded outwards to form protrusions, the two ends of the magnetic steel 2 along the circumferential direction are recessed inwards to form grooves, the protrusions and the grooves are matched in a plugging manner, so that the two are mechanically and fixedly connected, and the centrifugal force of the magnetic steel 2 can be smoothly transferred to the fixing base 11 and the rotor core 1. Here, one or more protrusions may be provided at both ends of the fixing base 11 in the circumferential direction. When the magnetic steel 2 is installed, the adjacent two fixing seats 11 can be inserted along the axial direction of the rotor core 1, and the grooves at the end parts of the magnetic steel are matched with the corresponding protrusions on the fixing seats 11.
In other embodiments, the connecting portion 111 may be a groove formed by recessing inward along two ends of the circumferential direction of the fixing base 11, and the mating portion 21 is a protrusion formed by protruding outward along two ends of the circumferential direction of the magnetic steel 2, and the magnetic steel 2 is fixedly connected to the fixing base 11 by using the cooperation of the protrusion and the groove.
It should be noted that, the main body of the protrusion may be a rectangular protrusion, each corner of the rectangular protrusion may be an arc angle, and the groove is similar to the protrusion.
As shown in fig. 1-2, optionally, the middle portion of the magnetic steel 2 is convexly curved away from the axis of the rotor core 1 to match the outer circumferential wall of the rotor core 1.
In this embodiment, the magnetic steel 2 is bent away from the axis of the rotor core 1 to form an annular segment, and the center of the circle where the annular segment is located on the axis of the rotor core 1, and the inner side wall of the magnetic steel 2 is attached to the outer peripheral wall of the rotor core 1.
In other embodiments, the magnetic steel 2 may be rectangular.
Alternatively, an end of the magnetic steel 2 facing the axis of the rotor core 1 is bonded to the outer peripheral wall of the rotor core 1.
In this embodiment, the inner wall surface of the magnetic steel in the annular section, that is, one end near the axis of the rotor core 1 may be coated with an adhesive material, and at the same time, the outer peripheral wall of the rotor core 1 between two adjacent fixing seats 11 may be coated with an adhesive material, and after the magnetic steel 2 is placed between two fixing seats 11, the surface of the magnetic steel 2 coated with an adhesive material is adhered to the portion of the rotor core 1. On the basis of the insertion fit of the magnetic steel 2 and the fixed seat 11, the magnetic steel is further ensured to be firmly installed by being bonded by the adhesive substances, so that the magnetic steel cannot be separated under the action of centrifugal force.
As shown in fig. 4, alternatively, the bonding is glue connection, and a glue containing groove 12 is formed in the peripheral wall of the rotor core 1, which is used for glue connection with the magnetic steel 2.
In this embodiment, the adhesive substance is glue, the magnetic steel 2 is connected with the outer peripheral wall of the rotor core 1 through glue, the rotor core 1 between two adjacent fixing seats 11 is provided with glue containing grooves 12, the glue containing grooves 12 are arranged at intervals along the circumferential side wall of the rotor core 1, and the positions on the rotor core 1 corresponding to the middle part and the circumferential two ends of the magnetic steel 2 are respectively provided with the glue containing grooves 12; the glue containing groove 12 can be an arc-shaped small groove, the notch and the groove depth are small, and the stable installation of the magnetic steel 2 is ensured that the magnetic steel 2 and the peripheral wall of the rotor core 1 have enough large contact area.
The glue containing groove 12 is used for containing redundant glue, so that the circumferential joint surface of the magnetic steel 2 and the rotor core 1 can be uniformly coated with glue, and the bonding stability is better.
As shown in fig. 1, the motor rotor structure optionally further comprises a rotor protecting sleeve 3, wherein the rotor protecting sleeve 3 is arranged on one side of the magnetic steel 2 away from the axis of the rotor core 1.
In this embodiment, each magnetic steel 2 and the fixing seat 11 are located on the same circumference, the rotor protecting sleeve 3 is in an annular structure, the rotor protecting sleeve 3 is sleeved outside the magnetic steel 2, and a pressing force along the radial direction of the rotor core 1 can be applied to the magnetic steel 2, so that the magnetic steel 2 is pressed on the rotor core 1, and the centrifugal force of a part is counteracted. In some embodiments, the rotor protective sleeve 3 may contact the magnetic steel 2 to limit the magnetic steel 2 from disengaging radially outward from the rotor core 1.
Here, the outer surface of the magnetic steel 2 and the outer surface of the fixing seat 11 are attached to the inner surface of the rotor protecting sleeve 3. Here, a plug-in matching part may be disposed on the outer surface of the magnetic steel 2 and the inner surface of the rotor protection sleeve 3.
The magnetic steel 2 is limited to move along the circumferential direction through the fixing seat 11, and meanwhile, the magnetic steel 2 is limited to move radially outwards along the rotor core 1 through the rotor protective sleeve 3, and the magnetic steel 2 is limited and fixed in different directions, so that the installation stability between the magnetic steel 2 and the rotor core 1 is improved.
Optionally, the rotor protective sleeve 3 is made of carbon fiber, glass fiber or steel.
In this embodiment, the rotor protective sleeve 3 protects the rotor core 1. Illustratively, the rotor protective sleeve is made of carbon fiber, glass fiber or steel, preferably carbon fiber, and is made of carbon fiber through winding, so that the rotor protective sleeve has the advantages of high strength and light weight, and deformation caused by centrifugation of the rotor core 1 and the magnetic steel 2 can be reduced.
Another embodiment of the present utility model provides a motor, including a motor shaft and the above-mentioned motor rotor structure, where the rotor core 1 of the motor rotor structure is disposed on the motor shaft. The motor shaft is coaxially arranged with the axis of the rotor core. The motor has the same advantages as the motor rotor structure described above compared with the prior art, and the description will not be repeated.
Alternatively, the rotor core 1 is integrally formed with the motor shaft.
In this embodiment, the rotor core 1 may be made of pure iron, and made of the same material as the motor shaft, and may be integrally manufactured with the motor shaft at this time, so that the manufacturing process is simple.
Of course, in some embodiments, the rotor core 1 may also be in the form of a punched lamination, in which case the rotor core 1 is machined separately from the motor shaft, and then the rotor core 1 is assembled to the motor shaft.
Another embodiment of the present utility model provides an automobile, including the above motor. The automobile can be a new energy automobile. The advantages of the motor vehicle compared with the prior art are the same as those of the motor, and the description thereof will not be repeated.
Although the utility model is disclosed above, the scope of the utility model is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the utility model, and these changes and modifications will fall within the scope of the utility model.
Claims (10)
1. The utility model provides a motor rotor structure, its characterized in that, includes rotor core (1) and magnet steel (2), be equipped with a plurality of fixing base (11) along circumference on the peripheral wall of rotor core (1), fixing base (11) are followed respectively be equipped with connecting portion (111) at the both ends of circumference, magnet steel (2) are located adjacent two between fixing base (11), magnet steel (2) are followed respectively be equipped with connecting portion (111) assorted mating portion (21) at the both ends of circumference, adjacent through connecting portion (111) with mating portion (21) cooperation is connected between magnet steel (2) and fixing base (11).
2. The motor rotor structure according to claim 1, characterized in that the connecting portion (111) is a protrusion provided on the fixing base (11), and the mating portion (21) is a groove provided on the magnetic steel (2); or, the connecting part (111) is a groove arranged on the fixing seat (11), and the matching part (21) is a protrusion arranged on the magnetic steel (2); the adjacent magnetic steel (2) and the fixed seat (11) are connected with the groove in a plug-in fit manner through the protrusions.
3. The motor rotor structure according to claim 1, characterized in that the middle portion of the magnetic steel (2) is convexly curved away from the axis of the rotor core (1) to match the outer peripheral wall of the rotor core (1).
4. The motor rotor structure according to claim 1, characterized in that an end of the magnetic steel (2) facing the axis of the rotor core (1) is bonded to the outer peripheral wall of the rotor core (1).
5. The motor rotor structure according to claim 4, wherein the bonding is glue connection, and a glue containing groove (12) is formed in the peripheral wall of the rotor core (1) for glue connection with the magnetic steel (2).
6. The motor rotor structure according to claim 1, further comprising a rotor protective sleeve (3), the rotor protective sleeve (3) being provided on a side of the magnetic steel (2) remote from the axis of the rotor core (1).
7. The motor rotor structure according to claim 6, characterized in that the rotor protective sleeve (3) is made of carbon fiber, glass fiber or steel.
8. An electric motor, characterized by comprising a motor shaft and a motor rotor structure according to any one of claims 1-7, the rotor core (1) of which is provided on the motor shaft.
9. The electric machine according to claim 8, characterized in that the rotor core (1) is integrally formed with the motor shaft.
10. An automobile comprising an electric machine as claimed in any one of claims 8 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506605.9U CN219999128U (en) | 2023-06-13 | 2023-06-13 | Motor rotor structure, motor and car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321506605.9U CN219999128U (en) | 2023-06-13 | 2023-06-13 | Motor rotor structure, motor and car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219999128U true CN219999128U (en) | 2023-11-10 |
Family
ID=88618356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321506605.9U Active CN219999128U (en) | 2023-06-13 | 2023-06-13 | Motor rotor structure, motor and car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219999128U (en) |
-
2023
- 2023-06-13 CN CN202321506605.9U patent/CN219999128U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20240617 Address after: No. 98 Beihui Road, Huishan Industrial Transformation and Agglomeration Zone, Wuxi City, Jiangsu Province, China Patentee after: Wuxi Xingqu Power Technology Co.,Ltd. Country or region after: China Patentee after: Wuxi Xingqu Technology Co.,Ltd. Address before: No. 99, Beihui Road, Huishan District, Wuxi City, Jiangsu Province, 214181 Patentee before: Wuxi Xingqu Power Technology Co.,Ltd. Country or region before: China Patentee before: Wuxi Xingqu Technology Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |