CN113300509A - Rotor and motor - Google Patents
Rotor and motor Download PDFInfo
- Publication number
- CN113300509A CN113300509A CN202110733295.3A CN202110733295A CN113300509A CN 113300509 A CN113300509 A CN 113300509A CN 202110733295 A CN202110733295 A CN 202110733295A CN 113300509 A CN113300509 A CN 113300509A
- Authority
- CN
- China
- Prior art keywords
- rotor
- silicon steel
- magnetic strip
- sheets
- rotor core
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
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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
- H02K1/22—Rotating parts of the magnetic circuit
-
- 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
- H02K1/22—Rotating parts of the magnetic circuit
- H02K1/27—Rotor cores with permanent magnets
- H02K1/2706—Inner rotors
- H02K1/272—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis
- H02K1/274—Inner rotors the magnetisation axis of the magnets being perpendicular to the rotor axis the rotor consisting of two or more circumferentially positioned magnets
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Iron Core Of Rotating Electric Machines (AREA)
Abstract
The invention discloses a rotor and a motor, wherein the rotor comprises: rotor shaft, rotor core and magnetic stripe, rotor core and rotor shaft interference fit, rotor core includes the silicon steel sheet that a plurality of superpositions set up, the silicon steel sheet includes go-between and a plurality of connection piece, a plurality of connection pieces are connected with the go-between respectively, and a plurality of connection pieces are along circumference interval evenly distributed, form the storage tank between the adjacent connection piece, the welding notch has been seted up to the side of connection piece, and the tip of the one end of keeping away from the go-between of connection piece is provided with spacing barb, be provided with on the go-between of partial silicon steel sheet and support the tongue, superpose interference fit between the adjacent connection piece, and in welding notch department welded connection, the magnetic stripe holding is in the storage tank, and the magnetic stripe respectively with the go-between, the connection piece, spacing barb reaches to the tongue butt. The universality of the ferrite magnetic strip is improved, the motor cost is reduced, and the motor efficiency is improved. Correspondingly, the invention further provides the motor.
Description
Technical Field
The invention relates to the technical field of motors, in particular to a rotor and a motor comprising the rotor.
Background
The permanent magnet motor rotor generally comprises a rotor shaft, a rotor core and magnetic stripes, the magnetic stripes of the traditional rotor generally adopt rare earth magnetic stripes, the price is high, the centrifugal force is small, and the cost and the efficiency of the permanent magnet motor are influenced. In order to save the cost of the motor and improve the efficiency of the motor, the rare earth magnetic strip can be replaced by the ferrite magnetic strip with low cost and large centrifugal force, however, the ferrite magnetic strip has large volume and heavy weight, and is easy to displace in a high-speed rotation state, thereby seriously restricting the application of the ferrite magnetic strip. Therefore, it is urgently needed to provide a rotor capable of meeting the fixing and limiting requirements of ferrite magnetic stripes so as to reduce the cost of the motor and improve the efficiency of the motor.
Disclosure of Invention
The invention aims to provide a rotor and a motor, which can save the cost of the motor and improve the efficiency of the motor.
To achieve the purpose, on one hand, the invention adopts the following technical scheme:
a rotor, comprising: the rotor comprises a rotor shaft, a rotor core and a magnetic stripe, wherein the rotor core is in interference fit with the rotor shaft and comprises a plurality of silicon steel sheets which are arranged in a stacked mode, the silicon steel sheet comprises a connecting ring and a plurality of connecting sheets, the connecting sheets are respectively connected with the connecting ring, the connecting sheets are evenly distributed along the circumferential direction at intervals, a containing groove is formed between every two adjacent connecting sheets, the side edge of each connecting sheet is provided with a welding notch, and the end part of one end of the connecting sheet far away from the connecting ring is provided with a limiting barb, the connecting ring of part of the silicon steel sheet is provided with a support tongue, the adjacent connecting sheets are in interference fit, and the magnetic strip is contained in the containing groove and is respectively abutted against the connecting ring, the connecting sheet, the limiting barb and the abutting tongue.
In one embodiment, stamping buckling points are arranged on the connecting sheets, and the stamping buckling points on the connecting sheets of the adjacent silicon steel sheets are buckled with each other.
In one embodiment, the rotor further comprises a magnetic strip gasket, and the magnetic strip gasket is arranged between the magnetic strip and the limiting barb.
In one embodiment, a groove is formed in the position, close to the limiting barb, of the connecting piece, and the magnetic strip gasket is contained in the groove.
In one embodiment, the connecting piece is provided with two welding notches, the two welding notches are respectively located on two side edges of the connecting piece, and the two welding notches are arranged in a staggered mode.
In one embodiment, the connecting ring is provided with a buffer hole.
In one embodiment, the rotor shaft and the rotor core are correspondingly provided with mutually matched bosses and interference grooves.
In one embodiment, the magnetic strip is a ferrite magnetic strip.
In another aspect, the invention also provides an electric machine comprising a rotor as defined in any one of the above.
In the rotor, the connecting ring of the silicon steel sheets is provided with the abutting tongue, the connecting sheets are provided with the limiting barbs, the abutting tongue and the limiting barbs are respectively positioned at two sides of the magnetic strip along the radial direction and abutted against the magnetic strip, and the abutting tongue is stressed and deformed to generate deformation force so that the magnetic strip is stably fixed between the abutting tongue and the limiting barbs, and the magnetic strip is ensured to be stably and reliably fixed along the radial direction, in addition, the adjacent connecting sheets are overlapped and in interference fit, so that the stable and reliable connection between the silicon steel sheets along the radial direction can be ensured, meanwhile, the adjacent connecting sheets are welded and connected, a welding seam is formed at the welding notch on the rotor iron core after the silicon steel sheets are overlapped, the rotor iron core can be limited to move along the axial direction, the stable and reliable connection between the silicon steel sheets along the axial direction can be ensured, the rotor can satisfy the intensity demand under the high rotational speed operating mode.
In conclusion, in the rotor, the magnetic steel sheet and the magnetic strips are fixed and limited stably and reliably, the fixing and limiting requirements of the ferrite magnetic strips can be met, the universality of the ferrite magnetic strips is improved, the motor cost is reduced, and the motor efficiency is improved.
The motor has the advantages of low cost and high working efficiency by applying the rotor.
Drawings
FIG. 1 is a schematic structural view of a rotor in one embodiment;
FIG. 2 is a schematic structural view of the rotor core of FIG. 1;
fig. 3 is a schematic structural view of a silicon steel sheet in one embodiment.
Description of reference numerals:
10-rotor shaft, 20-rotor iron core, 21-silicon steel sheet, 211-connecting ring, 212-connecting sheet, 213-accommodating groove, 214-limiting barb, 215-resisting tongue, 216-buffer hole, 30-magnetic stripe and 40-magnetic stripe gasket.
Detailed Description
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1 to 3, a rotor according to an embodiment includes a rotor shaft 10, a rotor core 20, and a magnetic stripe 30. Rotor core 20 and rotor shaft 10 interference fit, rotor core 20 includes the silicon steel sheet 21 that a plurality of superpositions set up, silicon steel sheet 21 includes go-between 211 and a plurality of connection piece 212, a plurality of connection pieces 212 are connected with go-between 211 respectively, and a plurality of connection pieces 212 are along circumference interval evenly distributed, form storage tank 213 between the adjacent connection piece 212, the welding notch has been seted up to the side of connection piece 212, and the tip of the one end of keeping away from go-between 211 of connection piece 212 is provided with spacing barb 214, be provided with on the go-between 211 of part silicon steel sheet 21 and support tongue 215, superpose interference fit between the adjacent connection piece 212, and in welding notch department welded connection, magnetic stripe 30 holds in storage tank 213, and magnetic stripe 30 respectively with go-between 211, connection piece 212, spacing barb 214 and support tongue 215 butt.
Specifically, the magnetic strip 30 may be, but is not limited to, a ferrite magnetic strip 30. Further, the abutting tongue 215 is formed by extending the edge of the connecting ring 211 into the accommodating groove 213, and after the abutting tongue 215 abuts against the magnetic stripe 30, a deformation force can be generated to support the magnetic stripe 30 so as to fix the magnetic stripe 30 stably and reliably, but if the abutting force is too large, the magnetic stripe 30 is easily crushed, therefore, the abutting tongue 215 is only arranged on the connecting ring 211 of a part of the silicon steel sheets 21, and in order to ensure that the stress of the magnetic stripe 30 is uniform, the silicon steel sheets 21 provided with the abutting tongues 215 are arranged at intervals, preferably, one silicon steel sheet 21 with the abutting tongues 215 is arranged every six silicon steel sheets 21.
In the above rotor, the connecting ring 211 of the silicon steel sheets 21 is provided with the abutting tongue 215, the connecting sheet 212 is provided with the limiting barb 214, the abutting tongue 215 and the limiting barb 214 are respectively positioned at two sides of the magnetic stripe 30 along the radial direction and abut against the magnetic stripe 30, and the abutting tongue 215 deforms under stress to generate deformation force so as to stably fix the magnetic stripe 30 between the abutting tongue 215 and the limiting barb 214, so as to ensure that the magnetic stripe 30 is stably and reliably fixed along the radial direction, in addition, the adjacent connecting sheets 212 are overlapped and interference-fitted to ensure that the connection between the silicon steel sheets 21 along the radial direction is stable and reliable, meanwhile, the adjacent connecting sheets 212 are welded and connected, after the silicon steel sheets 21 are overlapped, a welding seam is formed at the welding notch along the axial direction on the rotor core 20, so as to limit the rotor core 20 to displace along the axial direction, ensure that the connection between the silicon steel sheets 21 is stable and reliable along the axial direction, and further ensure that the magnetic stripe 30 is stably and reliably fixed along the axial direction after being installed, rotor core 20 and magnetic stripe 30 can be stably fixed along radial and circumference homoenergetic, and the rotor can satisfy the intensity demand under the high rotational speed operating mode. In the rotor, the magnetic steel sheet and the magnetic strip 30 are fixed and limited stably and reliably, the fixing and limiting requirements of the ferrite magnetic strip 30 can be met, the universality of the ferrite magnetic strip 30 is improved, the motor cost is reduced, and the motor efficiency is improved.
In one embodiment, the connecting pieces 212 are provided with stamped buckling points, and the stamped buckling points on the connecting pieces 212 of the adjacent silicon steel sheets 21 are buckled with each other. Specifically, stamping buckling points are formed on the connecting sheet 212 through a stamping process, the stamping buckling points protrude towards the surface of one side of the connecting sheet 212, clamping grooves are formed on the surface of the other side of the connecting sheet 212 and the stamping buckling points, and after the adjacent silicon steel sheets 21 are stacked, protruding parts at the stamping buckling points on the next layer of silicon steel sheets 21 are clamped into the clamping grooves at the stamping buckling points on the previous layer of silicon steel sheets 21, so that the upper and lower connecting sheets 212 are mutually buckled, each silicon steel sheet 21 can be firmly buckled together, and the radial displacement of the rotor core 20 is further limited.
In one embodiment, the rotor further comprises a magnetic stripe gasket 40, the magnetic stripe gasket 40 is arranged between the magnetic stripe 30 and the limiting barb 214, the magnetic stripe gasket 40 can buffer the interaction force between the magnetic stripe 30 and the rotor core 20, the stress of the magnetic stripe 30 is uniform, and the magnetic stripe 30 can be prevented from being crushed due to nonuniform stress. Further, to improve the mounting stability of the magnetic stripe gasket 40, in one embodiment, a groove is formed on the connecting piece 212 near the position-limiting barb 214, and the magnetic stripe gasket 40 is accommodated in the groove.
In one embodiment, the connecting plate 212 is provided with two welding notches, the two welding notches are respectively located on two side edges of the connecting plate 212, and the two welding notches are arranged in a staggered manner. Specifically, two welding notch one is close to the go-between 211 and sets up, and another one end that is close to the connection piece 212 and keeps away from the go-between 211 sets up, and a plurality of silicon steel sheet 21 superposes back rotor core 20 wholly forms two welding seams in every storage tank 213, and two welding seams dislocation set can guarantee the connection homogeneity between circumference and the radial, can ensure the structural strength of whole rotor core 20 different positions in radial direction.
In one embodiment, the connection ring 211 is provided with a buffering hole 216, and the buffering hole 216 can buffer a deformation force generated when the rotor shaft 10 is pressed into the rotor core 20 by interference, so as to prevent the rotor core 20 from being deformed by extrusion too much, and ensure that the rotor core 20 and the rotor shaft 10 have good integrity at a high rotation speed. Further, in order to improve the structural strength, the buffer holes 216 may not be punched in the silicon steel sheet 21 of the last layer.
In one embodiment, the rotor shaft 10 and the rotor core 20 are provided with a boss and an interference groove respectively, which are matched with each other. Specifically, one of the rotor shaft 10 and the rotor core 20 is provided with a boss, the other is provided with an interference groove matched with the boss, and the rotor shaft 10 and the rotor core 20 are in interference fit with each other through the boss and the interference groove, so that the connection is stable and reliable.
On the other hand, the invention further provides a motor, which comprises the rotor, and the motor of the embodiment has the beneficial effects of low cost and high working efficiency by applying the rotor.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (9)
1. A rotor, comprising: the rotor comprises a rotor shaft (10), a rotor core (20) and magnetic stripes (30), wherein the rotor core (20) is in interference fit with the rotor shaft (10), the rotor core (20) comprises a plurality of silicon steel sheets (21) which are arranged in a stacked mode, each silicon steel sheet (21) comprises a connecting ring (211) and a plurality of connecting sheets (212), the connecting sheets (212) are connected with the connecting rings (211) respectively and are distributed uniformly at intervals along the circumferential direction, a containing groove (213) is formed between every two adjacent connecting sheets (212), a welding notch is formed in the side edge of each connecting sheet (212), a limiting barb (214) is arranged at the end part of one end, far away from the connecting ring (211), of each connecting sheet (212), part of the connecting rings (211) of the silicon steel sheets (21) are provided with abutting tongues (215), and the adjacent connecting sheets (212) are in interference fit with each other in a stacked mode, and the magnetic strip (30) is accommodated in the accommodating groove (213), and the magnetic strip (30) is respectively abutted against the connecting ring (211), the connecting sheet (212), the limiting barb (214) and the abutting tongue (215).
2. The rotor as recited in claim 1, characterized in that the connecting pieces (212) are provided with stamped fastening points, and the stamped fastening points on the connecting pieces (212) of the adjacent silicon steel sheets (21) are fastened with each other.
3. The rotor as recited in claim 1, further comprising a magnetic strip gasket (40), the magnetic strip gasket (40) being disposed between the magnetic strip (30) and the retention barb (214).
4. The rotor as recited in claim 3, characterized in that the connecting piece (212) is provided with a groove near the limit barb (214), and the magnetic strip gasket (40) is accommodated in the groove.
5. The rotor as recited in claim 1, characterized in that the connecting piece (212) is provided with two welding notches, the two welding notches are respectively located on two side edges of the connecting piece (212), and the two welding notches are arranged in a staggered manner.
6. The rotor as recited in any one of claims 1 to 5, characterized in that the connection ring (211) is provided with a buffer hole (216).
7. Rotor according to any of claims 1 to 5, characterized in that the rotor shaft (10) and the rotor core (20) are provided with mutually matching bosses and interference grooves, respectively.
8. Rotor according to any of claims 1 to 5, characterized in that the magnetic strips (30) are ferrite magnetic strips (30).
9. An electrical machine comprising a rotor according to any one of claims 1 to 8.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733295.3A CN113300509A (en) | 2021-06-30 | 2021-06-30 | Rotor and motor |
| PCT/CN2022/102966 WO2023274373A1 (en) | 2021-06-30 | 2022-06-30 | Rotor and motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110733295.3A CN113300509A (en) | 2021-06-30 | 2021-06-30 | Rotor and motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113300509A true CN113300509A (en) | 2021-08-24 |
Family
ID=77330100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110733295.3A Pending CN113300509A (en) | 2021-06-30 | 2021-06-30 | Rotor and motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113300509A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274373A1 (en) * | 2021-06-30 | 2023-01-05 | 上海法雷奥汽车电器系统有限公司 | Rotor and motor |
| CN116169808A (en) * | 2023-04-26 | 2023-05-26 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
-
2021
- 2021-06-30 CN CN202110733295.3A patent/CN113300509A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2023274373A1 (en) * | 2021-06-30 | 2023-01-05 | 上海法雷奥汽车电器系统有限公司 | Rotor and motor |
| CN116169808A (en) * | 2023-04-26 | 2023-05-26 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
| CN116169808B (en) * | 2023-04-26 | 2023-07-04 | 四川芯智热控技术有限公司 | Motor magnet fixing structure and motor magnet fixing method |
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