CN216056533U - Built-in opposite-impact permanent magnet motor - Google Patents
Built-in opposite-impact permanent magnet motor Download PDFInfo
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- CN216056533U CN216056533U CN202122081109.0U CN202122081109U CN216056533U CN 216056533 U CN216056533 U CN 216056533U CN 202122081109 U CN202122081109 U CN 202122081109U CN 216056533 U CN216056533 U CN 216056533U
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- Permanent Field Magnets Of Synchronous Machinery (AREA)
Abstract
The utility model provides a built-in hedging permanent magnet motor, which comprises a rotor, a stator and a rotor, wherein the rotor comprises a shaft which is a rotor rotation center; a rotor core fixed to a shaft; the magnets are embedded in the iron core of the rotor, and the magnetic pole directions of two adjacent magnets are opposite; the magnet blocking piece is positioned at the outermost end of the rotor core and structurally comprises a plurality of magnet positioning grooves which are positioned at the rear side of the magnets and correspond to the magnets one by one, and the magnets are positioned through the design of the magnet blocking pieces.
Description
Technical Field
The utility model mainly relates to the field of permanent magnet motors, in particular to a built-in hedging type permanent magnet motor.
Background
The magnets of the built-in permanent magnet opposed-impact type rotating motor are arranged in a radial mode by taking an axis as a center, the air gap flux density can be increased by the magnetic concentration effect, and the problem that the magnets are not easy to position due to the fact that like polarities repel each other is also caused.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned drawbacks of the prior art, the present invention provides a magnetic positioning device that achieves the effect of positioning a magnet through the design of a magnet retaining plate, and improves the problems of the motor torque and the vibration noise by performing a dynamic balance adjustment on a rotor through a rotor balancing slot.
An interior concealed offset permanent magnet motor, comprising:
a rotor comprising a shaft 4, the shaft 4 being a rotor rotation center;
a rotor core 5 fixed to the shaft 4;
the magnet 7, the magnet 7 is embedded in rotor core 5, the magnetic pole direction of two adjacent magnets 7 is opposite;
the rotor comprises a rotor core 5, a plurality of magnet blocking pieces 8 and a plurality of magnet positioning grooves 9, wherein the magnet blocking pieces 8 are positioned at the outermost end of the rotor core 5, and the plurality of magnet positioning grooves 9 are positioned at the rear side of the magnets 7 and correspond to the magnets 7 one by one.
Preferably, the magnet positioning slot 9 is provided with a positioning part in the middle, the positioning part is parallel to the long side of the magnet, the length of the positioning part is defined as 9a, the width of the positioning part is defined as 9b, the length of the magnet 7 is defined as 7a, the width of the magnet 7 is defined as 7b, wherein 9a is less than 7a, and 9b is less than 7 b.
Preferably, the magnet positioning grooves 9 are designed with a mechanism for reducing magnetic leakage at the position near the axis to reduce the magnetic leakage effect, and the rib 9c between two adjacent magnet positioning grooves 9 is less than or equal to 7 b.
Preferably, the magnet blocking plate 8 further comprises a rotor balancing groove 10, and the rotor balancing groove 10 is located between two adjacent magnet positioning grooves 9 and is close to the outer diameter of the rotor.
Preferably, the rotor balancing groove 10 is of a circular structure, a distance from a center of the rotor balancing groove 10 to an axis of the shaft 4 is defined as L, a diameter of the rotor balancing groove 10 is defined as R, and an outer diameter of the rotor is defined as R, wherein L ≧ R/2 and R ≦ 7 b.
The utility model has the beneficial effects that:
the magnet is positioned through the design of the magnet blocking piece, and the rotor is subjected to dynamic balance adjustment through the rotor balance groove, so that the problems of motor torque and vibration noise can be solved.
Drawings
FIG. 1 is a cross-sectional view of a rotating electrical machine of the present invention;
FIG. 2 is an exploded view of the rotor of the present invention;
fig. 3 is a structural view of the magnet baffle of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood and make the above features, objects, and advantages of the present invention more comprehensible, the present invention is further described with reference to the following examples. The examples are intended to illustrate the utility model only and are not intended to limit the scope of the utility model.
As shown in fig. 1 to 3, the present invention includes:
an interior concealed offset permanent magnet motor, comprising:
a rotor comprising a shaft 4, the shaft 4 being a rotor rotation center;
a rotor core 5 fixed to the shaft 4;
the magnet 7, the magnet 7 is embedded in rotor core 5, the magnetic pole direction of two adjacent magnets 7 is opposite;
the magnet blocking piece 8 is positioned at the outermost end of the rotor core 5, and the structure thereof comprises:
the magnet positioning groove 9 is provided with a convex structure for positioning, the convex structure is a positioning part, the positioning part is parallel to the long edge of the magnet, the length of the positioning part is defined as 9a, and the width of the positioning part is defined as 9 b; the length of the magnet 7 is defined as 7a, the width thereof is defined as 7b, and 9a < 7a and 9b < 7b are satisfied. And in order to reduce the magnetic leakage effect, the length of the rib position between two adjacent magnet positioning grooves 9 is 9c, and 9c is less than or equal to 7 b. The magnet is fixed between the magnet blocking piece 8 and the gear of the shaft 4 by the scheme, so that the influence of magnet dislocation on the motor characteristic is reduced.
The rotor balance groove 10 is a circular structure, the distance from the center of the circle to the axis of the shaft 4 is defined as L, the diameter is defined as R, and the outer diameter of the rotor is defined as R, so that L ≧ R/2 and R ≦ 7b are satisfied. The scheme can ensure that the rotation of the rotor can achieve dynamic balance, and can reduce the motor cogging torque and the vibration noise.
The above-described embodiments are merely illustrative of the principles and utilities of the present patent application and are not intended to limit the present patent application. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of this patent application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of this patent application.
Claims (5)
1. Interior concealed offset permanent-magnet machine, including the rotor, the rotor contains axle (4), axle (4) are rotor rotation center, its characterized in that includes:
a rotor core (5) fixed to the shaft (4);
the magnet (7), the magnet (7) is embedded in the rotor core (5), the magnetic pole directions of two adjacent magnets (7) are opposite;
the rotor comprises a rotor core (5), and a plurality of magnet blocking sheets (8), wherein the magnet blocking sheets (8) are positioned at the outermost end of the rotor core (5), and the structure of the rotor comprises a plurality of magnet positioning grooves (9), the plurality of magnet positioning grooves (9) are positioned at the rear side of the magnets (7) and correspond to the magnets (7) one by one.
2. The concealed opposed permanent magnet motor according to claim 1, wherein: the magnet positioning groove (9) is provided with a positioning part in the middle, the positioning part is parallel to the long edge of the magnet, the length of the positioning part is defined as (9a), the width of the positioning part is defined as (9b), the length of the magnet (7) is defined as (7a), the width of the magnet is defined as (7b), and the length of the magnet is less than (7a) and the width of the magnet is less than (7b), wherein (9a) < (7a) and (9b) < (7 b).
3. The interior concealed, opposed permanent magnet machine of claim 2, wherein: the number of ribs (9c) between the magnet positioning grooves (9) and two adjacent magnet positioning grooves (9) is less than or equal to (7 b).
4. The interior concealed, opposed permanent magnet motor according to claim 3, wherein: the magnet separation blade (8) further comprises a rotor balance groove (10), and the rotor balance groove (10) is located between two adjacent magnet positioning grooves (9) and is close to the outer diameter of the rotor.
5. The interior concealed, opposed permanent magnet motor according to claim 4, wherein: the rotor balancing groove (10) is of a circular structure, the axial distance from the circle center of the rotor balancing groove (10) to the shaft (4) is defined as L, the diameter of the rotor balancing groove (10) is defined as R, and the outer diameter of the rotor is defined as R, wherein L is ≧ R/2 and (R) ≦ 7 b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122081109.0U CN216056533U (en) | 2021-08-31 | 2021-08-31 | Built-in opposite-impact permanent magnet motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122081109.0U CN216056533U (en) | 2021-08-31 | 2021-08-31 | Built-in opposite-impact permanent magnet motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216056533U true CN216056533U (en) | 2022-03-15 |
Family
ID=80623124
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122081109.0U Active CN216056533U (en) | 2021-08-31 | 2021-08-31 | Built-in opposite-impact permanent magnet motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216056533U (en) |
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2021
- 2021-08-31 CN CN202122081109.0U patent/CN216056533U/en active Active
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