Motor 8-pole 12-slot rotor skewed pole structure
By designing an adjustable rotor oblique structure in a permanent magnet brushless motor, the problem of fixing the inclination angle of the magnet core is solved, angle adjustment and heat dissipation effects are achieved, and the performance and stability of the motor are improved.
Patent Information
- Application Number
- CN202421102837.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-21
- Publication Date
- 2025-01-14
- Estimated Expiration
- 2034-05-21
AI Technical Summary
The inclination angle of the rotor magnet core in existing permanent magnet brushless motors is fixed and cannot be adjusted during use, resulting in performance optimization, hysteresis loss and vibration problems.
A rotor oblique structure with 8 poles and 12 slots of the motor is designed. By providing grooves and sleeve rods on the outer wall of the rotor main body, the support rod forms a sliding connection with the magnet core, and the inclination angle adjustment of the magnet core is achieved through threads and connecting blocks. , and a heat dissipation groove is provided on the rotor main body to ensure the heat dissipation of the magnet core.
The dynamic adjustment of the inclination angle of the magnet core during use is achieved, which improves the practicality of the motor, and reduces the temperature of the magnet core through the heat dissipation tank, avoiding potential problems caused by high temperatures.
Smart Images
Figure CN222356073U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of permanent magnet brushless motors, in particular to a rotor skewed pole structure of a motor with 8 poles and 12 slots. Background Art
[0002] A permanent magnet brushless motor is a permanent magnet motor that is commutated or current controlled by an electronic circuit. There are two types of permanent magnet brushless motors: sinusoidal wave drive and square wave drive. The one with a rectangular wave drive current is usually called a permanent magnet brushless DC motor, and the one with a sinusoidal wave drive current is usually called a permanent magnet AC servo motor. According to the sensor type, it can be divided into a sensor motor and a positive sensor motor.
[0003] A magnetic core is fixed on the inner rotor of a permanent magnet brushless motor. In order to improve the performance of the motor, improve the torque characteristics and reduce the hysteresis loss and vibration of the motor, the magnetic core is tilted. However, the existing magnetic core tilt angle is fixed and cannot be adjusted during the use of the motor, which has limitations and therefore needs to be improved. Utility Model Content
[0004] The utility model aims to provide a rotor skewed pole structure of a motor with 8 poles and 12 slots, so as to solve the problem that the inclination angle of the rotor magnetic core is difficult to adjust in the above-mentioned background technology.
[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a motor rotor with 8 poles and 12 slots with an inclined pole structure, including a rotor body, a groove is opened on the outer wall of the rotor body, a sleeve rod is fixedly connected to the inside of the groove, a magnetic core is arranged at one end of the sleeve rod, the magnetic core is in an inclined structure, and the magnetic core and the rotor body form a sliding connection.
[0006] Preferably, a support pad is arranged inside the groove of the outer wall of the rotor body, a through hole is opened on the support pad, the support pad is sleeved on the outer wall of the sleeve rod, and the support pad is located between the rotor body and the magnet core.
[0007] Preferably, a support rod is inserted into one end of the sleeve rod, and one end of the support rod is connected to the magnet core.
[0008] Preferably, the outer wall of the support rod and the inner wall of the sleeve rod are both provided with threads, and the sleeve rod and the support rod form a lifting connection.
[0009] Preferably, a connecting block is provided at one end of the support rod, a groove is provided at the bottom of the magnetic core, a connecting block is inserted into the groove, and the connecting block is a rectangular structure.
[0010] Preferably, a groove is provided at the bottom of the connecting block, one end of the support rod is fixedly connected to a connecting frame, the connecting frame is inserted into the groove, a connecting shaft is connected to the connecting frame and the connecting block, and one end of the connecting frame is connected to a fixing screw.
[0011] Preferably, a heat dissipation groove and a locking groove are provided on the rotor body, and the heat dissipation groove is located at the bottom of the magnetic core.
[0012] Compared with the prior art, the beneficial effects of the utility model are:
[0013] (1) The device can adjust the inclination angle of the magnetic core according to actual conditions during the use of the motor, thereby improving practicality.
[0014] (2) The device arranges a sleeve rod and a support rod in a groove on the outer wall of the rotor body. One end of the support rod is movably connected to the magnetic core. The height of the support rod can be adjusted by rotating the support rod, thereby achieving the purpose of adjusting the inclination angle of the two ends of the magnetic core.
[0015] (3) The device provides a heat dissipation groove on the rotor body, and the heat dissipation groove is located at the bottom of the magnetic core, thereby ensuring the heat dissipation of the magnetic core and preventing the magnetic core from being overheated. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is a schematic diagram of a rotor skewed pole structure of an 8-pole 12-slot motor of the utility model;
[0017] Figure 2 The utility model is a motor with 8 poles and 12 slots and a rotor with a skewed pole structure. Figure 1 Enlarged view of point A in the middle;
[0018] Figure 3 It is a bottom view of the connection between the connecting block and the sleeve rod of a rotor skewed pole structure of an 8-pole 12-slot motor of the utility model;
[0019] Figure 4 It is a cross-sectional view of the connection between a connecting block and a sleeve rod of a rotor skewed pole structure of an 8-pole 12-slot motor according to the utility model.
[0020] In the figure: 1. rotor body; 2. locking groove; 3. heat dissipation groove; 4. support pad; 5. magnet core; 6. support rod; 7. sleeve rod; 8. connecting block; 9. connecting shaft; 10. connecting frame; 11. fixing screw. DETAILED DESCRIPTION
[0021] 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.
[0022] See also Figure 1-4 The utility model provides a technical solution: a rotor skew pole structure of an 8-pole 12-slot motor, comprising a rotor body 1, a groove is provided on the outer wall of the rotor body 1, a sleeve rod 7 is fixedly connected inside the groove, a support rod 6 is inserted at one end of the sleeve rod 7, and one end of the support rod 6 is connected to the magnetic core 5; this structure can ensure the stability of the support rod 6 during the adjustment process by arranging the sleeve rod 7; the outer wall of the support rod 6 and the inner wall of the sleeve rod 7 are both provided with threads, and the sleeve rod 7 and the support rod 6 form a lifting connection; this structure can adjust the height of the support rod 6 by rotating the support rod 6, thereby adjusting the height of the two ends of the magnetic core 5; a connecting block 8 is provided at one end of the support rod 6, a groove is provided at the bottom of the magnetic core 5, a connecting block 8 is inserted inside the groove, and the connecting block 8 is a rectangular structure; this structure can connect the support rod 6 to the magnetic core 5 by arranging the connecting block 8, and at the same time prevent the connecting block 8 from rotating after the support rod 6 is connected to the magnetic core 5; a groove is provided at the bottom of the connecting block 8, and a connecting frame 10 is fixedly connected to one end of the support rod 6, and the connecting frame 10 is inserted in the groove, The connecting frame 10 is connected to the connecting block 8 with a connecting shaft 9, and one end of the connecting frame 10 is connected with a fixing screw 11; this structure can connect the support rod 6 to the connecting block 8 by setting the connecting shaft 9 and the connecting frame 10, so as to facilitate the adjustment of the inclination angle with the magnetic core 5; the support rod 6 and the connecting block 8 can be fixed by setting the fixing screw 11; a magnetic core 5 is provided at one end of the sleeve rod 7, and the magnetic core 5 is in an inclined structure. The magnetic core 5 and the rotor body 1 form a sliding connection, and a support pad 4 is provided inside the groove of the outer wall of the rotor body 1. The support pad 4 is provided with a through hole, and the support pad 4 is sleeved on the outer wall of the sleeve rod 7, and the support pad 4 is located between the rotor body 1 and the magnetic core 5; this structure can not only make the magnetic core 5 dissipate heat normally by setting the support pad 4, but also play a supporting effect on the magnetic core 5; a heat dissipation groove 3 and a locking groove 2 are provided on the rotor body 1, and the heat dissipation groove 3 is located at the bottom of the magnetic core 5; this structure is convenient for installing bolts to fix the shaft of the rotor body 1 by setting the locking groove 2; the heat dissipation efficiency of the heat at the bottom of the magnetic core 5 can be improved by setting the heat dissipation groove 3.
[0023] Working principle: When using the 8-pole 12-slot rotor skewed pole structure of the motor, first adjust the height of the support rod 6. During adjustment, rotate the support rod 6 so that the support rod 6 is raised or lowered to a suitable height inside the sleeve rod 7. Then, sleeve the support pad 4 on the outside of the sleeve rod 7. Then, connect the magnetic core 5 to the connecting block 8. Then, use bolts to fix the connecting block 8 to the magnetic core 5. After fixing the connecting block 8 to the magnetic core 5, adjust the angle between the magnetic core 5 and the connecting block 8. During adjustment, remove the fixing screws 11 that fix the connecting block 8. Then, rotate the connecting block 8 through the connecting shaft 9. When the connecting block 8 is at a suitable angle, use the fixing screws 11 to fix the connecting block 8.
[0024] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art may still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.
Claims
1. A motor rotor with 8 poles and 12 slots with skewed poles, comprising a rotor body (1), characterized in that: The outer wall of the rotor body (1) is provided with a groove, a sleeve rod (7) is fixedly connected inside the groove, a magnetic core (5) is arranged at one end of the sleeve rod (7), the magnetic core (5) is in an inclined structure, and the magnetic core (5) and the rotor body (1) are in sliding connection.
2. The 8-pole 12-slot rotor skewed pole structure of a motor according to claim 1, characterized in that: A support pad (4) is arranged inside the groove on the outer wall of the rotor body (1), a through hole is opened on the support pad (4), the support pad (4) is sleeved on the outer wall of the sleeve rod (7), and the support pad (4) is located between the rotor body (1) and the magnet core (5).
3. The rotor skewed pole structure of a motor with 8 poles and 12 slots according to claim 1, characterized in that: A support rod (6) is inserted into one end of the sleeve rod (7), and one end of the support rod (6) is connected to the magnetic core (5).
4. The 8-pole 12-slot rotor skewed pole structure of a motor according to claim 3, characterized in that: The outer wall of the support rod (6) and the inner wall of the sleeve rod (7) are both provided with threads, and the sleeve rod (7) and the support rod (6) form a lifting connection.
5. The 8-pole 12-slot rotor skewed pole structure of a motor according to claim 3, characterized in that: A connecting block (8) is provided at one end of the support rod (6), a groove is provided at the bottom of the magnetic core (5), and the connecting block (8) is inserted into the groove. The connecting block (8) is a rectangular structure.
6. The rotor skewed pole structure of a motor with 8 poles and 12 slots according to claim 5, characterized in that: A groove is provided at the bottom of the connecting block (8); one end of the support rod (6) is fixedly connected to a connecting frame (10); the connecting frame (10) is inserted into the groove; a connecting shaft (9) is connected to the connecting frame (10) and the connecting block (8); and one end of the connecting frame (10) is connected to a fixing screw (11).
7. The skewed pole structure of a rotor with 8 poles and 12 slots of a motor according to claim 1, characterized in that: The rotor body (1) is provided with a heat dissipation groove (3) and a locking groove (2), and the heat dissipation groove (3) is located at the bottom of the magnetic core (5).