CN217656482U - Permanent magnet synchronous motor - Google Patents
Permanent magnet synchronous motor Download PDFInfo
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- CN217656482U CN217656482U CN202221359529.9U CN202221359529U CN217656482U CN 217656482 U CN217656482 U CN 217656482U CN 202221359529 U CN202221359529 U CN 202221359529U CN 217656482 U CN217656482 U CN 217656482U
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- magnetic shoe
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Abstract
The utility model relates to a motor, concretely relates to permanent magnet synchronous motor. The utility model provides a permanent magnet synchronous motor, its characterized in that includes stator and rotor, be equipped with the magnetic shoe that a plurality of annular intervals set up on the stator circumference inner wall, the rotor includes rotor core, the outer terminal surface of magnetic shoe and interior terminal surface are the cambered surface, just the radius of the circle that outer terminal surface of magnetic shoe constitutes is the same with the radius of the circle that interior terminal surface of magnetic shoe constitutes, the distance between the axis of the place of the centre of a circle of the circular arc that outer terminal surface of magnetic shoe constitutes with the axis of the place of the centre of a circle of the circular arc that interior terminal surface of magnetic shoe constitutes is the same with magnetic shoe thickness, rotor core is including closing on the tooth portion of stator, tooth portion surface is the cambered surface, tooth portion surface with the distance r1 between the centre of a circle of the circle that tooth portion surface constitutes is less than rotor core's radius r2. The utility model has the advantages of can be convenient for manufacture, can improve production efficiency, reduction in production cost and do not influence the normal use of motor.
Description
Technical Field
The utility model relates to a motor, concretely relates to permanent magnet synchronous motor.
Background
The chinese patent with the application number of 201720615423.3 discloses a permanent magnet generator outer rotor and a permanent magnet generator for adjusting the shape of a magnetic shoe, wherein the center of a circle formed by inner end faces of the magnetic shoes is closer to the outer side of the magnetic shoes than the center of a circle formed by outer end faces of the magnetic shoes, so that the air gap is improved, the tooth space torque is reduced, and the use stability of the motor is higher. In order to match the magnetic shoe, the outer surface of the tooth part of the rotor core of the motor is concentric with the axis of the rotor.
When the magnetic tile is produced and processed, a magnetic tile blank is cut on the blank plate through linear cutting, and then the magnetic tile blank is magnetized to obtain the magnetic tile. In order to reduce the length of a path taken by the cutting line during cutting and reduce the times of moving the cutting line from the outside of the blank plate to the inside of the blank plate, a plurality of boron magnetic tiles are cut on the blank plate in each operation; however, when the magnetic tiles are stacked, the inner end surface of one magnetic tile of two adjacent magnetic tiles cannot be in close contact with the outer end surface of the other magnetic tile, so that a gap exists between the two adjacent magnetic tiles after stacking. Therefore, when cutting is carried out, a gap of more than 0.2mm exists between two adjacent magnetic tiles, material waste is caused, the route of the cutting line is still long, the working efficiency is low, and the production cost is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a be convenient for produce can improve production efficiency, reduction in production cost and do not influence the PMSM of normal use.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a permanent magnet synchronous motor, its characterized in that includes stator and rotor, be equipped with the magnetic shoe that a plurality of annular intervals set up on the stator circumference inner wall, the rotor includes rotor core, the outer terminal surface of magnetic shoe and interior terminal surface are the cambered surface, just the radius of the circle that outer terminal surface of magnetic shoe constitutes is the same with the radius of the circle that interior terminal surface of magnetic shoe constitutes, the distance between the axis of the place of the centre of a circle of the circular arc that outer terminal surface of magnetic shoe constitutes with the axis of the place of the centre of a circle of the circular arc that interior terminal surface of magnetic shoe constitutes is the same with magnetic shoe thickness, rotor core is including closing on the tooth portion of stator, tooth portion surface is the cambered surface, tooth portion surface with the distance r1 between the centre of a circle of the circle that tooth portion surface constitutes is less than rotor core's radius r2.
Because the radius of the circle formed by the outer end surface of the magnetic shoe is the same as that of the circle formed by the inner end surface of the magnetic shoe, the distance between the axis of the circle center of the circular arc formed by the outer end surface of the magnetic shoe and the axis of the circle center of the circular arc formed by the inner end surface of the magnetic shoe is the same as the thickness of the magnetic shoe, and when the magnetic shoes are laminated, the adjacent two magnetic shoes are coplanar; when the magnetic tiles are produced, two adjacent magnetic tiles cut from the blank have common edges, so that the length of a line to be moved by linear cutting can be reduced, the production efficiency can be improved, the production loss can be reduced, and the production cost can be reduced. And when the rotor rotates relative to the stator, the distance between the circumferential surface of the tooth part of the rotor core and the magnetic shoe on the stator changes, so that unequal air gap effects can be realized, the cogging torque is reduced, the vibration of the motor in use is reduced, the noise of the motor in use is reduced, and the stability of the motor in use is ensured. Wherein, rotor core is formed by a plurality of rotor punching stacks, can carry out the setting of rotor punching shape according to actual need, and the production of magnetic shoe is compared to the production of rotor punching more simply, the utility model discloses a change the magnetic shoe shape so that the processing of magnetic shoe is more convenient, the manufacturing of being convenient for.
Preferably, the magnetic shoes are arranged symmetrically. The arrangement makes the moving track of the cutting line used for the line cutting more convenient when the magnetic shoe is processed, the moving track is smoother, and the processing and the production are convenient.
Preferably, the thickness of each magnetic shoe is the same. The arrangement is convenient for the moving track of the cutting line used by the line cutting to be arranged when the magnetic shoe is processed, the moving track is smoother, and the processing and the production are convenient.
Preferably, two ends of the outer end face of the magnetic shoe are directly connected with the side wall of the magnetic shoe. The arrangement is convenient for the moving track of the cutting line used by the line cutting to be arranged when the magnetic shoe is processed, the moving track is smoother, and the processing and the production are convenient.
Preferably, a distance between a center of a circle formed by the outer surfaces of the teeth and a center of a rotor core is L, and L is one-half to three-quarters of r2. The value of L is always in the optimal range, the structural strength of the rotor core is better, and the use is more stable.
The utility model has the advantages of can be convenient for manufacture, can improve production efficiency, reduction in production cost and do not influence the normal use of motor.
Drawings
Fig. 1 is a schematic structural view of a stator and a rotor according to the present invention;
fig. 2 is a schematic structural view of the magnetic shoe of the present invention;
FIG. 3 is a schematic structural diagram of the positions of the circle center of the outer end surface and the circle center of the inner end surface of the magnetic shoe according to the present invention;
fig. 4 is an enlarged view of the vicinity of the magnetic shoe and the rotor core according to the present invention.
Detailed Description
The invention will be further described with reference to the drawings and the specific embodiments.
As shown in fig. 1 to 4, the present embodiment discloses a permanent magnet synchronous motor, which includes a stator 1 and a rotor 2, a plurality of magnetic shoes 3 are arranged on a circumferential inner wall of the stator 1 at intervals, the rotor 2 includes a rotor core 4, outer end surfaces 31 of the magnetic shoes 3 and inner end surfaces 32 of the magnetic shoes 3 are both arc surfaces, a radius of a circle formed by the outer end surfaces 31 of the magnetic shoes 3 is the same as a radius of a circle formed by the inner end surfaces 32 of the magnetic shoes 3, a distance L2 between an axis where a center of a circle formed by the outer end surfaces 31 of the magnetic shoes 3 is located and an axis where a center of a circle formed by the inner end surfaces 32 of the magnetic shoes 3 is located is the same as a thickness L1 of the magnetic shoes 3, the rotor core 4 includes a tooth portion 41 adjacent to the stator 1, an outer surface 42 of the tooth portion 41 is an arc surface, and a distance r1 between centers of circles formed by the outer surface 42 of the tooth portion 41 and the outer surface 42 of the tooth portion 41 is smaller than a radius r2 of the rotor core 4.
Wherein, the magnetic shoe 3 is arranged in bilateral symmetry, the thickness of each part of the magnetic shoe 3 is the same, and two ends of the outer end face 31 of the magnetic shoe 3 are directly connected with the side wall 33 of the magnetic shoe 3.
The distance between the center of the circle formed by the outer surfaces 41 of the teeth 41 and the center of the rotor core 4 is L, and L is one-half to three-fourths of r2.
The utility model has the advantages of can be convenient for manufacture, can improve production efficiency, reduction in production cost and do not influence the normal use of motor.
Claims (5)
1. The utility model provides a permanent magnet synchronous motor, its characterized in that includes stator and rotor, be equipped with the magnetic shoe that a plurality of annular intervals set up on the stator circumference inner wall, the rotor includes rotor core, the outer terminal surface of magnetic shoe and interior terminal surface are the cambered surface, just the radius of the circle that outer terminal surface of magnetic shoe constitutes is the same with the radius of the circle that interior terminal surface of magnetic shoe constitutes, the distance between the axis of the place of the centre of a circle of the circular arc that outer terminal surface of magnetic shoe constitutes with the axis of the place of the centre of a circle of the circular arc that interior terminal surface of magnetic shoe constitutes is the same with magnetic shoe thickness, rotor core is including closing on the tooth portion of stator, tooth portion surface is the cambered surface, tooth portion surface with the distance r1 between the centre of a circle of the circle that tooth portion surface constitutes is less than rotor core's radius r2.
2. A permanent magnet synchronous machine according to claim 1, characterized in that: the magnetic shoes are arranged in bilateral symmetry.
3. A permanent magnet synchronous machine according to claim 1, characterized in that: the thickness of each part of the magnetic shoe is the same.
4. A permanent magnet synchronous machine according to claim 1, 2 or 3, characterized in that: and two ends of the outer end surface of the magnetic shoe are directly connected with the side wall of the magnetic shoe.
5. A permanent magnet synchronous machine according to claim 1, characterized in that: the distance between the center of a circle formed by the outer surfaces of the tooth parts and the center of the rotor core is L, and L is one half to three quarters of r2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221359529.9U CN217656482U (en) | 2022-06-01 | 2022-06-01 | Permanent magnet synchronous motor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221359529.9U CN217656482U (en) | 2022-06-01 | 2022-06-01 | Permanent magnet synchronous motor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217656482U true CN217656482U (en) | 2022-10-25 |
Family
ID=83665165
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221359529.9U Active CN217656482U (en) | 2022-06-01 | 2022-06-01 | Permanent magnet synchronous motor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217656482U (en) |
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2022
- 2022-06-01 CN CN202221359529.9U patent/CN217656482U/en active Active
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