Rotor core of permanent magnet synchronous motor
By using the structure of the core fixing cylinder and the rotor core module in the rotor core core of the permanent magnet synchronous motor, combined with the design of splicing blocks and splicing grooves, the problem of easy deformation of the rotor core module connection is solved, stable connection and efficient heat dissipation are achieved, and the operating stability and working efficiency of the motor are improved.
Patent Information
- Application Number
- CN202421263574.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-04
AI Technical Summary
The existing block rotor core unit is prone to deformation of the head and tail connections when the motor rotor is running, resulting in discontinuity of the magnetic circuit, causing changes in the magnetic field and abnormal motor operation.
A rotor core of a permanent magnet synchronous motor is designed, and the structure of the iron core fixing cylinder and the rotor core module is adopted. The stable connection between the module is achieved through the design of the splicing block and the splicing groove, and the stability and fixability of the module are ensured through the cooperation of the middle insertion block, auxiliary insertion block and side insertion block.
It effectively solves the problem of easy deformation of the rotor core module connection, ensures the continuity of the magnetic circuit and the stable operation of the motor. At the same time, the heat dissipation efficiency is improved through the design of the central control groove, reduces eddy current loss, and improves the working efficiency of the motor.
Smart Images
Figure CN222602126U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of motor rotor cores, in particular to a rotor core of a permanent magnet synchronous motor. Background Art
[0002] The rotor core is an important component of the magnetic circuit of a permanent magnet synchronous motor. Together with the stator core and the air gap between the stator and the rotor, it forms a complete magnetic circuit of the motor. However, the existing block rotor core units are connected in a block-type manner, but this method is fixed. When the motor rotor is running, it is easy to cause the rotor core head and tail connections to deform, which can easily cause the magnetic circuit to be discontinuous, causing changes in the magnetic field and causing abnormal operation of the motor. For this reason, we propose a rotor core for a permanent magnet synchronous motor. Utility Model Content
[0003] The utility model aims to provide a rotor core of a permanent magnet synchronous motor to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a rotor core of a permanent magnet synchronous motor, comprising a core fixing tube and a rotor core module, the bottom of the core fixing tube is fixedly connected to a bottom fixing seat, the top of the bottom fixing seat is fixedly connected to a plurality of side insertion blocks distributed in a circular shape, the inner sides of adjacent side insertion blocks are provided with middle insertion blocks, the top of the bottom fixing seat is fixedly connected to a plurality of auxiliary insertion blocks distributed in a staggered manner, the inside of the rotor core module is respectively provided with side insertion openings and middle insertion openings, the middle insertion opening is located in the middle of the side insertion openings on both sides, and the auxiliary insertion openings are located around the side insertion openings and the middle insertion openings.
[0005] The side inserting block is connected to the side inserting port, the middle inserting block is connected to the middle inserting port, and the auxiliary inserting block is connected to the auxiliary inserting port.
[0006] Among them, a splicing block is arranged on one side of the rotor core module, and a splicing groove is opened on the other side of the rotor core module. The splicing blocks of adjacent rotor core modules are inserted into the splicing grooves and connected to each other.
[0007] Among them, a plurality of winding support plates are fixedly connected to the middle of the core fixing cylinder, and the other ends of the winding support plates are fixedly connected to the outer sides of the main shaft respectively.
[0008] Wherein, the intervals between adjacent winding support plates form a through slot.
[0009] Among them, a top fixing seat is arranged on the outer side of the top of the iron core fixing tube, and the top fixing seat has the same structure as the bottom fixing seat.
[0010] Among them, two central control slots are opened in the middle of the rotor core module.
[0011] The utility model has at least the following beneficial effects:
[0012] Firstly, by means of the splicing blocks and splicing grooves respectively arranged on both sides of the rotor core module, when splicing the rotor core module, the splicing blocks can be inserted into the splicing grooves to connect adjacent rotor core modules to each other, and the middle insertion block, auxiliary insertion block and side insertion block arranged on the top of the bottom fixing seat correspond to the middle insertion port, auxiliary insertion port and side insertion port of the rotor core module respectively, and then are inserted and fixed to ensure the stability of the rotor core module. By means of the structure of the tail splicing and the corresponding insertion and fixing structure, the problem of easy deformation of the tail connection when the rotor core modules are connected to each other can be solved. At the same time, the middle control groove opened in the middle of the rotor core module can increase the heat dissipation surface area to improve the heat conduction and dissipation efficiency during the operation of the rotor, thereby ensuring that the motor can work within a good temperature range, and a small groove design is arranged on the outside of the adjacent middle control grooves to reduce the generation of eddy currents and the unevenness of the magnetic field, thereby reducing eddy current losses and ensuring the working efficiency of the motor. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 It is a three-dimensional diagram of the utility model;
[0014] Figure 2 This is a schematic diagram of the structure of the mounting seat of the utility model;
[0015] Figure 3 This is a schematic diagram of the structure of the rotor core module of the utility model;
[0016] Figure 4 For this utility model Figure 2 Enlarged view of point A in the middle.
[0017] In the figure: 1. main shaft; 2. core fixing cylinder; 3. winding support plate; 4. rotor core module; 5. top fixing seat; 6. through slot; 7. bottom fixing seat; 8. splicing block; 9. center control slot; 10. side insertion port; 11. center insertion port; 12. auxiliary insertion port; 13. splicing slot; 14. center insertion block; 15. auxiliary insertion block; 16. side insertion block. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figures 1 to 4 :
[0020] Embodiment 1
[0021] The utility model provides a technical solution: a rotor core of a permanent magnet synchronous motor, comprising a core fixing cylinder 2 and a rotor core module 4, the bottom of the core fixing cylinder 2 is fixedly connected with a bottom fixing seat 7, the top of the bottom fixing seat 7 is fixedly connected with a plurality of side insertion blocks 16 distributed in a circumferential shape, the inner side of the adjacent side insertion blocks 16 is provided with a middle insertion block 14, the top of the bottom fixing seat 7 is fixedly connected with a plurality of auxiliary insertion blocks 15 distributed in a staggered manner, the inside of the rotor core module 4 is respectively provided with side insertion openings 10 and middle insertion openings 11, and the middle insertion openings 11 are located in the middle of the side insertion openings 10 on both sides. The auxiliary insertion openings 12 are located around the side insertion openings 10 and the middle insertion openings 11. Through the splicing blocks 8 and the splicing grooves 13, when splicing the rotor core modules 4, the splicing blocks 8 can be inserted into the splicing grooves 13 to connect the adjacent rotor core modules 4 to each other. The middle insertion block 14, the auxiliary insertion block 15 and the side insertion block 16 arranged on the top of the bottom fixing seat 7 correspond to the middle insertion openings 11, the auxiliary insertion openings 12 and the side insertion openings 10 of the rotor core modules 4 respectively, and then they are inserted and fixed on the top of the bottom fixing seat 7, and then the top fixing seat 5 is closed to complete the installation and fixation of the rotor core module 4.
[0022] The side insert block 16 is connected to the side insert port 10 , the middle insert block 14 is connected to the middle insert port 11 , and the auxiliary insert block 15 is connected to the auxiliary insert port 12 . The interconnected insert ports and insert blocks can ensure the stable operation of the rotor core module 4 .
[0023] A splicing block 8 is provided on one side of the rotor core module 4, and a splicing groove 13 is opened on the other side of the rotor core module 4. The splicing blocks 8 of adjacent rotor core modules 4 are inserted into the splicing grooves 13 and connected to each other. By inserting the splicing blocks 8 into the splicing grooves 13, adjacent rotor core modules 4 can be connected to each other to form a rotor.
[0024] Embodiment 2
[0025] A plurality of winding support plates 3 are fixedly connected to the middle of the core fixing cylinder 2. The other ends of the winding support plates 3 are fixedly connected to the outer sides of the main shaft 1 respectively. The winding support plates 3 are used for winding the wire group.
[0026] The intervals between adjacent winding support plates 3 form through slots 6, which can prevent adjacent wire groups from touching each other, thereby ensuring the stability of the magnetic field.
[0027] A top fixing seat 5 is disposed on the outer side of the top of the core fixing tube 2 , and the top fixing seat 5 has the same structure as the bottom fixing seat 7 .
[0028] Two central control slots 9 are provided in the middle of the rotor core module 4. The central control slots 9 can increase the heat dissipation surface area to improve the heat conduction and dissipation efficiency during the operation of the rotor, ensuring that the motor can operate within a good temperature range. A small groove design is provided on the outside of the adjacent central control slots 9 to reduce the generation of eddy currents and the unevenness of the magnetic field, thereby reducing eddy current losses.
[0029] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A rotor core of a permanent magnet synchronous motor, comprising: The core fixing cylinder (2) and the rotor core module (4) are characterized in that: the bottom of the core fixing cylinder (2) is fixedly connected to a bottom fixing seat (7), the top of the bottom fixing seat (7) is fixedly connected to a plurality of side insertion blocks (16) distributed in a circumferential shape, the inner side of the adjacent side insertion blocks (16) is provided with a middle insertion block (14), the top of the bottom fixing seat (7) is fixedly connected to a plurality of auxiliary insertion blocks (15) distributed in a staggered manner, and the inside of the rotor core module (4) is respectively provided with side insertion openings (10) and middle insertion openings (11), the middle insertion openings (11) are located in the middle of the side insertion openings (10) on both sides, and the auxiliary insertion openings (12) are located around the side insertion openings (10) and the middle insertion openings (11).
2. The rotor core of the permanent magnet synchronous motor according to claim 1, characterized in that: The side insertion block (16) is connected to the side insertion port (10), the middle insertion block (14) is connected to the middle insertion port (11), and the auxiliary insertion block (15) is connected to the auxiliary insertion port (12).
3. The rotor core of the permanent magnet synchronous motor according to claim 1, characterized in that: A splicing block (8) is provided on one side of the rotor core module (4), and a splicing groove (13) is provided on the other side of the rotor core module (4); the splicing blocks (8) of adjacent rotor core modules (4) are inserted into the splicing grooves (13) and are connected to each other.
4. The rotor core of the permanent magnet synchronous motor according to claim 1, characterized in that: A plurality of winding support plates (3) are fixedly connected to the middle of the iron core fixing cylinder (2), and the other ends of the winding support plates (3) are respectively fixedly connected to the outer sides of the main shaft (1).
5. The rotor core of the permanent magnet synchronous motor according to claim 4, characterized in that: The intervals between adjacent winding support plates (3) form through grooves (6).
6. The rotor core of the permanent magnet synchronous motor according to claim 1, characterized in that: A top fixing seat (5) is arranged on the outer side of the top of the core fixing cylinder (2), and the top fixing seat (5) has the same structure as the bottom fixing seat (7).
7. The rotor core of the permanent magnet synchronous motor according to claim 1, characterized in that: Two central control slots (9) are provided in the middle of each of the rotor core modules (4).