CN216390631U - Magnetic steel sleeve structure for motor rotor of electric vehicle - Google Patents
Magnetic steel sleeve structure for motor rotor of electric vehicle Download PDFInfo
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- CN216390631U CN216390631U CN202123238396.8U CN202123238396U CN216390631U CN 216390631 U CN216390631 U CN 216390631U CN 202123238396 U CN202123238396 U CN 202123238396U CN 216390631 U CN216390631 U CN 216390631U
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- magnetic steel
- steel sleeve
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/64—Electric machine technologies in electromobility
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Abstract
The utility model discloses a magnetic steel sleeve structure used in an electric vehicle motor rotor, which comprises a cylindrical magnetic steel sleeve, wherein the two sides of the magnetic steel sleeve are respectively provided with an inner mounting flange end face and an outer mounting flange end face, and the inner mounting flange end face and the outer mounting flange end face are uniformly and respectively provided with a plurality of fixing screw holes by taking the central axis of the magnetic steel sleeve as the circumference; and a plurality of magnetic steel grooves are uniformly arranged on the inner wall of the magnetic steel sleeve by taking the central axis as the central circumference, and magnetic steel is arranged in the magnetic steel sleeve. The utility model avoids the problem that the magnetic steel sleeve has enough thickness in order to meet the requirement of processing a screw hole in the magnetic steel sleeve in the prior art, effectively reduces the thickness of the magnetic steel sleeve, correspondingly lightens the weight of the magnetic steel sleeve, reduces the processing cost, and simultaneously reduces the driving loss in the using process; the bottom groove surface and the side groove surface of the magnetic steel groove are in fit contact with the bottom surface and the side surface of the magnetic steel, so that the magnetic steel diamagnetism is improved, the magnetic steel is very firmly installed, and displacement cannot occur.
Description
Technical Field
The utility model relates to the technical field of electric motors, in particular to a magnetic steel sleeve structure for an electric vehicle motor rotor.
Background
In a driving mechanism of an electric vehicle, in order to make a driving structure simpler and a power performance of a motor more superior, a hub motor is generally used, and a magnetic steel sleeve is arranged in the hub motor and used for placing a magnetic steel sheet, and the magnetic steel sheet is arranged on the inner wall of the magnetic steel sleeve.
As shown in fig. 1, a screw hole 22 required for fixing a hub side cover needs to be processed on the magnetic steel sleeve 11, so that the thickness of the magnetic steel sleeve 11 needs to be sufficient, which results in heavy weight of the magnetic steel sleeve, high production cost, high energy consumption in later use and influence on the driving effect; as shown in fig. 2, since the inner wall of the magnetic steel sleeve 11 is cylindrical, the rectangular parallelepiped magnetic steel 33 cannot completely contact the inner wall of the magnetic steel sleeve, and a mounting gap exists, so that the amount of demagnetization of the magnetic steel is insufficient. Therefore, the existing magnetic steel sleeve needs to be improved.
Disclosure of Invention
The present invention is directed to solve the above problems in the prior art, and provides a magnetic steel sleeve structure for use in a motor rotor of an electric vehicle.
In order to achieve the purpose, the technical scheme of the utility model is as follows: a magnetic steel sleeve structure used in an electric vehicle motor rotor comprises a cylindrical magnetic steel sleeve, wherein an inner mounting flange end face and an outer mounting flange end face are respectively arranged on two sides of the magnetic steel sleeve, and a plurality of fixing screw holes are uniformly and respectively arranged on the inner mounting flange end face and the outer mounting flange end face by taking the central axis of the magnetic steel sleeve as the central circumference; and a plurality of magnetic steel grooves are uniformly arranged on the inner wall of the magnetic steel sleeve by taking the central axis as the central circumference, and magnetic steel is arranged in the magnetic steel sleeve.
In the magnetic steel sleeve structure for the motor rotor of the electric vehicle, the bottom of the magnetic steel groove is a plane bottom, and the plane bottom and the bottom surface of the magnetic steel are in contact with each other in a fitting manner.
In the magnetic steel sleeve structure for the motor rotor of the electric vehicle, the side surface of the magnetic steel groove is in contact with the side surface of the magnetic steel in a fitting manner.
In the magnetic steel sleeve structure for the motor rotor of the electric vehicle, the two end parts of the magnetic steel groove are positioned in the inner wall of the magnetic steel sleeve and do not penetrate through to the two side surfaces of the magnetic steel sleeve.
In the magnetic steel sleeve structure for the motor rotor of the electric vehicle, one end part of the magnetic steel groove is positioned in the inner wall of the magnetic steel sleeve, and the other end part of the magnetic steel groove is communicated to the side surface of the magnetic steel sleeve adjacent to the end surface of the outer mounting flange.
In the magnetic steel sleeve structure for the motor rotor of the electric vehicle, the positioning interval convex strips are formed between the two adjacent magnetic steel grooves.
In the above magnetic steel sleeve structure for the electric vehicle motor rotor, the number of the fixing screw holes formed in the end surfaces of the inner and outer mounting flanges is equal and the fixing screw holes are arranged in a one-to-one correspondence manner.
In the above magnetic steel sleeve structure for the motor rotor of the electric vehicle, the end surfaces of the inner and outer mounting flanges are respectively provided with fixing studs corresponding to the fixing screw holes, and the hole positions of the fixing screw holes correspondingly extend on the fixing studs.
In the above magnetic steel sleeve structure for the electric vehicle motor rotor, the fixing studs on the end surfaces of the inner and outer mounting flanges are respectively arranged on the side surfaces adjacent to the magnetic steel sleeve.
By adopting the technical scheme, the utility model has the following beneficial effects:
the utility model is provided with an inner mounting flange end face and an outer mounting flange end face on two side faces of a magnetic steel sleeve respectively, fixing screw holes for connecting a hub side cover are correspondingly arranged on the inner mounting flange end face and the outer mounting flange end face, and the hub side cover is fixedly connected with the magnetic steel sleeve through the inner mounting flange end face and the outer mounting flange end face; therefore, the problem that the magnetic steel sleeve has enough thickness in order to meet the requirement of processing a screw hole in the magnetic steel sleeve in the prior art is solved, the thickness of the magnetic steel sleeve is effectively reduced, the weight of the magnetic steel sleeve is correspondingly reduced, the processing cost is reduced, and meanwhile, the driving loss in the using process is also reduced.
The magnetic steel sleeve is characterized in that a plurality of magnetic steel grooves are uniformly arranged on the inner wall of the magnetic steel sleeve by taking the central axis as the center circumference, the magnetic steel is installed and fixed in the magnetic steel grooves, and the bottom groove surfaces and the side groove surfaces of the magnetic steel grooves are in fit contact with the bottom surfaces and the side surfaces of the magnetic steel, so that the magnetic steel demagnetizing quantity is improved, and the magnetic steel is very firmly installed and cannot be displaced.
Drawings
Fig. 1 and 2 are conventional structural diagrams;
FIG. 3 is an exploded view of the present invention;
FIG. 4 is a perspective view of the present invention;
FIG. 5 is a cross-sectional view of the present invention;
fig. 6 is an enlarged view of a portion a of fig. 5.
Detailed Description
The utility model is further elucidated with reference to the drawing.
The first embodiment is as follows:
referring to fig. 3 to 6, the utility model provides a magnetic steel sleeve structure for an electric vehicle motor rotor, which comprises a cylindrical magnetic steel sleeve 1, wherein an inner mounting flange end face 2 and an outer mounting flange end face 3 are respectively arranged on two sides of the magnetic steel sleeve 1, a plurality of fixing screw holes 4 are uniformly and respectively arranged on the inner mounting flange end face 2 and the outer mounting flange end face 3 by taking the central axis of the magnetic steel sleeve 1 as the central circumference, and the number of the fixing screw holes 4 arranged on the inner mounting flange end face 2 and the outer mounting flange end face 3 is equal and is arranged in a one-to-one correspondence manner; the magnetic steel sleeve 1 is fixedly connected with the hub side cover through the fixing screw holes 4 in the inner mounting flange end face 2 and the outer mounting flange end face 3, and the thickness of the magnetic steel sleeve can be designed to be thinner because the fixing screw holes for connecting the hub side cover do not need to be processed in the magnetic steel sleeve.
A plurality of magnetic steel grooves 5 are uniformly arranged on the inner wall of the magnetic steel sleeve 1 by taking the central axis as the central circumference, positioning interval convex strips 6 are formed between every two adjacent magnetic steel grooves 5, magnetic steel 7 is installed in the magnetic steel sleeve 1, the groove bottom of each magnetic steel groove 5 is a plane groove bottom, and after the magnetic steel 7 is installed in each magnetic steel groove 5, the bottom surface of each magnetic steel 7 is in fit contact with the plane groove bottom of each magnetic steel groove 5 and the side surfaces of each magnetic steel 7 and the side surfaces of each magnetic steel groove 5; not only can improve the firmness of the installation of the magnetic steel 7 and can not generate displacement, but also can improve the magnetic flux reversal of the magnetic steel 7.
Furthermore, two end parts of the magnetic steel groove 5 are positioned in the inner wall of the magnetic steel sleeve 1 and do not penetrate through to two side surfaces of the magnetic steel sleeve 1; thus, the magnetic steel 7 in the magnetic steel groove 5 is installed more firmly.
Furthermore, the end face 2 of the inner mounting flange and the end face 3 of the outer mounting flange are respectively provided with a fixing stud 8 corresponding to the fixing screw hole 4, and the hole positions of the fixing screw holes 4 correspondingly extend on the fixing studs 8, so that the strength of the magnetic steel sleeve 1 in the process of fixed connection is improved.
Further, in order to facilitate the installation and connection of the magnetic steel sleeve 1 and the hub side cover, the fixing studs 8 on the inner mounting flange end face 2 and the outer mounting flange end face 3 are respectively arranged on the side faces adjacent to the magnetic steel sleeve 1.
Example two:
the utility model provides a magnetic steel sleeve structure used in a motor rotor of an electric vehicle, wherein one end part of a magnetic steel groove 5 is positioned in the inner wall of a magnetic steel sleeve 1, and the other end part of the magnetic steel groove runs through to the side surface of the magnetic steel sleeve 1 adjacent to the end surface 3 of an outer mounting flange; the position of the end of the magnetic steel slot 5 can be changed according to the processing and use requirements.
The magnetic steel sleeve structure for the motor rotor of the electric vehicle provided by the embodiment of the utility model is described in detail above, and the principle and the implementation mode of the utility model are explained in the present document by applying a specific example, and the description of the above embodiment is only used to help understanding the technical scheme disclosed by the utility model; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation of the present invention.
Claims (9)
1. The utility model provides a magnetic steel bushing structure for in electric motor car motor rotor, includes cylindric magnetic steel bushing, its characterized in that: the two sides of the magnetic steel sleeve are respectively provided with an inner mounting flange end face and an outer mounting flange end face, and the inner mounting flange end face and the outer mounting flange end face are uniformly and respectively provided with a plurality of fixing screw holes by taking the central axis of the magnetic steel sleeve as the circumference; and a plurality of magnetic steel grooves are uniformly arranged on the inner wall of the magnetic steel sleeve by taking the central axis as the central circumference, and magnetic steel is arranged in the magnetic steel sleeve.
2. The magnetic steel sleeve structure for the motor rotor of the electric vehicle as claimed in claim 1, wherein: the bottom of the magnetic steel groove is a plane groove bottom, and the plane groove bottom is in contact with the bottom surface of the magnetic steel in a fitting manner.
3. The magnetic steel sleeve structure for the motor rotor of the electric vehicle as claimed in claim 2, wherein: the side face of the magnetic steel groove is in contact with the side face of the magnetic steel in a fitting manner.
4. The magnetic steel sleeve structure used in the motor rotor of the electric vehicle as claimed in claim 2 or 3, wherein: the two end parts of the magnetic steel groove are positioned in the inner wall of the magnetic steel sleeve and do not penetrate to the two side faces of the magnetic steel sleeve.
5. The magnetic steel sleeve structure used in the motor rotor of the electric vehicle as claimed in claim 2 or 3, wherein: one end of the magnetic steel groove is positioned in the inner wall of the magnetic steel sleeve, and the other end of the magnetic steel groove is communicated to the side face of the magnetic steel sleeve adjacent to the end face of the outer mounting flange.
6. The magnetic steel sleeve structure for the motor rotor of the electric vehicle as claimed in claim 4, wherein: and positioning interval convex strips are formed between the two adjacent magnetic steel grooves.
7. The magnetic steel sleeve structure for the motor rotor of the electric vehicle as claimed in claim 1, wherein: the number of the fixing screw holes formed in the end face of the inner mounting flange is equal to that of the fixing screw holes formed in the end face of the outer mounting flange, and the fixing screw holes are arranged in a one-to-one correspondence mode.
8. The magnetic steel sleeve structure used in the motor rotor of the electric vehicle as claimed in claim 1 or 7, wherein: and the end surfaces of the inner and outer mounting flanges are respectively provided with a fixing stud corresponding to the fixing screw hole, and the hole position of the fixing screw hole correspondingly extends on the fixing stud.
9. The magnetic steel sleeve structure for the motor rotor of the electric vehicle as claimed in claim 8, wherein: the fixing studs on the end surfaces of the inner mounting flange and the outer mounting flange are respectively arranged on the side surfaces adjacent to the magnetic steel sleeves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238396.8U CN216390631U (en) | 2021-12-22 | 2021-12-22 | Magnetic steel sleeve structure for motor rotor of electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123238396.8U CN216390631U (en) | 2021-12-22 | 2021-12-22 | Magnetic steel sleeve structure for motor rotor of electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216390631U true CN216390631U (en) | 2022-04-26 |
Family
ID=81235795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123238396.8U Active CN216390631U (en) | 2021-12-22 | 2021-12-22 | Magnetic steel sleeve structure for motor rotor of electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216390631U (en) |
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2021
- 2021-12-22 CN CN202123238396.8U patent/CN216390631U/en active Active
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