CN211018434U - Rotor structure of surface-mounted inner rotor permanent magnet motor - Google Patents
Rotor structure of surface-mounted inner rotor permanent magnet motor Download PDFInfo
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- CN211018434U CN211018434U CN201921362728.3U CN201921362728U CN211018434U CN 211018434 U CN211018434 U CN 211018434U CN 201921362728 U CN201921362728 U CN 201921362728U CN 211018434 U CN211018434 U CN 211018434U
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- punching sheet
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Abstract
The utility model provides a surface-mounted inner rotor permanent magnet motor's rotor structure, include: the punching sheet comprises a punching sheet body (1) and magnetic steel (4); a plurality of magnetic isolation bridges (5) are arranged on the punching sheet body (1); magnetic steel (4) is arranged among the magnetic isolation bridges (5); the magnetic isolation bridge (5) comprises: a support part (2) and a connecting part (3); the connecting part (3) is connected with the punching sheet body (1) through the supporting part (2); convex parts protruding outwards are respectively arranged on two sides of the connecting part (3); the magnetic steel (4) is in interference fit with the connecting part (3). The utility model discloses rational in infrastructure, convenient operation can prevent that the magnet steel from breaking away from to have the advantage that surface magnetic field is strong, the anti demagnetization ability of motor is strong.
Description
Technical Field
The utility model relates to the technical field of electric machines, specifically, relate to a surface mounting type inner rotor permanent-magnet machine's rotor structure.
Background
The development of permanent magnet materials and the development of power electronic components not only accelerate the research and development of permanent magnet brushless motors, but also promote the application field. In order to obtain the maximum utilization rate of the permanent magnet in the permanent magnet brushless motor, the rotor magnetic steel is usually in a surface-mounted form, but the surface-mounted magnetic steel structure has the risk of separation when the motor runs at high speed. The permanent magnet motor and the rotor structure disclosed in patent document CN109474153A include a motor casing, a stator core fixed in an inner cavity of the motor casing, a rotor core installed in the inner cavity of the motor casing and located in the inner cavity of the stator core, six sets of through holes annularly distributed and penetrating through the side wall of the rotor core and having a circular shape, and six sets of fastening connection mechanisms correspondingly connected in the six sets of through holes and pressing a left permanent magnet baffle and a right permanent magnet baffle against the side wall of the rotor core.
The rotor structure of the conventional permanent magnet motor still has a structural optimization.
SUMMERY OF THE UTILITY MODEL
To the defect among the prior art, the utility model aims at providing a surface mounted inner rotor permanent-magnet machine's rotor structure.
According to the utility model provides a pair of surface-mounted inner rotor permanent magnet motor's rotor structure, include: the punching sheet comprises a punching sheet body 1 and magnetic steel 4;
a plurality of magnetic isolation bridges 5 are arranged on the punching sheet body 1;
and magnetic steel 4 is arranged among the magnetic isolation bridges 5.
Preferably, said magnetic isolation bridge 5 comprises: the support portion 2 and the connecting portion 3;
the connecting part 3 is connected with the punching sheet body 1 through the supporting part 2;
two sides of the connecting part 3 are respectively provided with convex parts protruding outwards;
the magnetic steel 4 is in interference fit with the connecting part 3.
Preferably, the magnetic isolation bridges 5 are equidistantly arranged on the periphery of the punching sheet body 1.
Preferably, the punching sheet body 1 is of a circular ring structure.
Preferably, a first arc part 43 is arranged at the top of the magnetic steel 4; a second arc part 44 is arranged at the bottom of the magnetic steel 4;
the second arc part 44 is attached to the periphery of the punching sheet body 1;
the first arc portion 43 is higher than the magnetic isolation bridge 5.
According to the utility model provides a pair of surface-mounted inner rotor permanent magnet motor's rotor structure, include: the punching sheet comprises a punching sheet body 1 and magnetic steel 4;
a plurality of magnetic isolation bridges 5 are arranged on the punching sheet body 1;
the magnetic isolation bridge 5 includes: the support portion 2 and the connecting portion 3;
the connecting part 3 is connected with the punching sheet body 1 through the supporting part 2;
two sides of the connecting part 3 are respectively provided with convex parts protruding outwards;
the magnetic steel 4 is in interference fit with the connecting part 3;
the magnetic isolation bridges 5 are arranged on the periphery of the punching sheet body 1 at equal intervals;
the punching sheet body 1 is of a circular ring structure;
a first arc part 43 is arranged at the top of the magnetic steel 4; a second arc part 44 is arranged at the bottom of the magnetic steel 4;
the second arc part 44 is attached to the periphery of the punching sheet body 1;
the first arc portion 43 is higher than the magnetic isolation bridge 5.
Compared with the prior art, the utility model discloses following beneficial effect has:
1. reasonable structure and convenient operation.
2. The magnetic steel can be safely and reliably fastened on the rotor through the matching of the magnetic steel and the side surface of the magnetic isolation bridge.
3. The material utilization rate of the magnetic steel can be improved through the interval arrangement of the magnetic isolation bridge.
4. The magnetic steel can be prevented from being separated, and the demagnetization resistance of the motor is improved.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
fig. 1 is the utility model provides a pair of surface-mounted inner rotor permanent magnet motor's rotor structure front structure schematic diagram.
Fig. 2 is the utility model provides a pair of the structure sketch map of the magnetic isolation bridge of the rotor structure of the surface-mounted inner rotor permanent magnet motor.
Fig. 3 is the utility model provides a pair of surface-mounted inner rotor permanent magnet motor's rotor structure's magnet steel structure schematic diagram.
The figures show that:
Detailed Description
The present invention will be described in detail with reference to the following embodiments. The following examples will assist those skilled in the art in further understanding the present invention, but are not intended to limit the invention in any way. It should be noted that various changes and modifications can be made by one skilled in the art without departing from the spirit of the invention. These all belong to the protection scope of the present invention.
As shown in fig. 1 to fig. 3, according to the utility model provides a rotor structure of surface-mounted inner rotor permanent magnet motor, include: the punching sheet comprises a punching sheet body 1 and magnetic steel 4; a plurality of magnetic isolation bridges 5 are arranged on the punching sheet body 1; and magnetic steel 4 is arranged among the magnetic isolation bridges 5. The magnetic isolation bridge 5 includes: the support portion 2 and the connecting portion 3; the connecting part 3 is connected with the punching sheet body 1 through the supporting part 2; two sides of the connecting part 3 are respectively provided with convex parts protruding outwards; the magnetic steel 4 is in interference fit with the connecting part 3. In the preferred embodiment, the punching sheet body 1 comprises a first punching sheet 11 and a second punching sheet 12, the structure improves the magnetic field intensity, and the demagnetization resistance of the motor is improved.
Further, the magnetic isolation bridges 5 are equidistantly arranged on the periphery of the punching sheet body 1; the punching sheet body 1 is of a circular ring structure. In the preferred embodiment, the setting of 5 equidistance of magnetic isolation bridge is in the periphery of punching sheet body 1, and its purpose is in order to improve the material utilization ratio of magnet steel. In a preferred embodiment, magnetic steel correspondingly matched with each magnetic isolation bridge structure is arranged between each group of magnetic isolation bridge structures.
Furthermore, a first arc part 43 is arranged at the top of the magnetic steel 4; a second arc part 44 is arranged at the bottom of the magnetic steel 4; the second arc part 44 is attached to the periphery of the punching sheet body 1; the first arc portion 43 is higher than the magnetic isolation bridge 5. In a preferred embodiment, the magnetic steel 4 further includes a first flat portion 41 and a second flat portion 42, and the first flat portion 41 and the second flat portion 42 are respectively in contact with the connecting portion 3.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of the specific embodiments of the invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by those skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (5)
1. A surface-mounted inner rotor permanent magnet motor's rotor structure, its characterized in that includes: the punching sheet comprises a punching sheet body (1) and magnetic steel (4);
a plurality of magnetic isolation bridges (5) are arranged on the punching sheet body (1);
magnetic steel (4) is arranged among the magnetic isolation bridges (5);
the punching sheet body (1) comprises a first punching sheet (11) and a second punching sheet (12), wherein a magnetic isolation bridge (5) is arranged on the first punching sheet (11), and the magnetic isolation bridge (5) is not arranged on the second punching sheet (12);
the magnetic isolation bridge (5) comprises: the supporting part (2) and the connecting part (3), wherein the supporting part (2) is of a V-shaped structure;
the connecting part (3) is connected with the punching sheet body (1) through the supporting part (2);
convex parts protruding outwards are respectively arranged on two sides of the connecting part (3);
the magnetic steel (4) is in interference fit with the connecting part (3), the magnetic steel (4) comprises a first plane part (41) and a second plane part (42), and the first plane part (41) and the second plane part (42) are respectively in contact with the connecting part (3).
2. The rotor structure of a surface-mounted inner rotor permanent magnet motor according to claim 1, wherein the magnetic separation bridges (5) are equidistantly arranged on the periphery of the punching sheet body (1).
3. The rotor structure of a surface-mounted inner rotor permanent magnet motor according to claim 1, wherein the punching sheet body (1) is a circular ring structure.
4. The rotor structure of a surface-mounted inner rotor permanent magnet motor according to claim 1, wherein a first arc portion (43) is provided at the top of the magnetic steel (4); a second arc part (44) is arranged at the bottom of the magnetic steel (4);
the second arc part (44) is attached to the periphery of the punching sheet body (1);
the height of the first arc part (43) is higher than that of the magnetic isolation bridge (5).
5. A surface-mounted inner rotor permanent magnet motor's rotor structure, its characterized in that includes: the punching sheet comprises a punching sheet body (1) and magnetic steel (4);
a plurality of magnetic isolation bridges (5) are arranged on the punching sheet body (1);
magnetic steel (4) is arranged among the magnetic isolation bridges (5);
the punching sheet body (1) comprises a first punching sheet (11) and a second punching sheet (12), wherein a magnetic isolation bridge (5) is arranged on the first punching sheet (11), and the magnetic isolation bridge (5) is not arranged on the second punching sheet (12);
the magnetic isolation bridge (5) comprises: a support part (2) and a connecting part (3);
the connecting part (3) is connected with the punching sheet body (1) through the supporting part (2);
convex parts protruding outwards are respectively arranged on two sides of the connecting part (3);
the magnetic steel (4) is in interference fit with the connecting part (3);
the magnetic isolation bridges (5) are arranged on the periphery of the punching sheet body (1) at equal intervals;
the punching sheet body (1) is of a circular ring structure;
a first arc part (43) is arranged at the top of the magnetic steel (4); a second arc part (44) is arranged at the bottom of the magnetic steel (4);
the second arc part (44) is attached to the periphery of the punching sheet body (1);
the height of the first arc part (43) is higher than that of the magnetic isolation bridge (5);
the magnetic isolation bridge (5) comprises: the supporting part (2) and the connecting part (3), wherein the supporting part (2) is of a V-shaped structure;
the connecting part (3) is connected with the punching sheet body (1) through the supporting part (2);
convex parts protruding outwards are respectively arranged on two sides of the connecting part (3);
the magnetic steel (4) is in interference fit with the connecting part (3), the magnetic steel (4) comprises a first plane part (41) and a second plane part (42), and the first plane part (41) and the second plane part (42) are respectively in contact with the connecting part (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362728.3U CN211018434U (en) | 2019-08-21 | 2019-08-21 | Rotor structure of surface-mounted inner rotor permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921362728.3U CN211018434U (en) | 2019-08-21 | 2019-08-21 | Rotor structure of surface-mounted inner rotor permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211018434U true CN211018434U (en) | 2020-07-14 |
Family
ID=71478317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921362728.3U Active CN211018434U (en) | 2019-08-21 | 2019-08-21 | Rotor structure of surface-mounted inner rotor permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211018434U (en) |
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2019
- 2019-08-21 CN CN201921362728.3U patent/CN211018434U/en active Active
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