Silicon steel sheet rotor and motor

Abstract

The utility model provides a silicon steel sheet rotor and a motor, and the silicon steel sheet rotor comprises a rotor magnet yoke which is provided with a shaft hole towards the center and is used for cooperating with a rotating shaft; the magnetic steel fixing pieces are arranged on at least one end face of the rotor magnet yoke; a plurality of positioning strips which are distributed along the circumferential direction are arranged on the magnetic steel fixing piece; the magnetic steel is arranged in the circumferential direction of the magnetic steel fixing piece and is embedded between every two adjacent positioning strips, the problem that the magnetic steel is prone to displacement or looseness during high-speed rotation is effectively solved, and it is ensured that the magnetic steel is kept stable in the high-speed rotation process.

Description

Technical Field

[0001] This utility model relates to the field of motor rotor technology, specifically to a silicon steel sheet rotor and motor. Background Technology

[0002] With the rapid development of industrial automation, new energy vehicles, and renewable energy, higher requirements are being placed on motors for high efficiency, high power density, low noise, and lightweight design. As the core component of a motor, the rotor's design directly affects its performance. Specifically, the arrangement and fixing method of the rotor magnets directly impacts the motor's torque output, efficiency, and control accuracy.

[0003] However, the magnets in the rotor are prone to displacement or loosening when rotating at high speeds, leading to magnetic field instability, which in turn affects motor efficiency and lifespan. Utility Model Content

[0004] This invention addresses the existing problem that magnets are prone to displacement or loosening when rotating at high speeds.

[0005] To solve the above problems, this utility model provides a silicon steel sheet rotor, comprising:

[0006] The rotor yoke has a centrally located shaft hole for engaging with a rotating shaft.

[0007] A magnet fixing component is provided on at least one end face of the rotor yoke; the magnet fixing component is provided with a plurality of positioning strips distributed circumferentially.

[0008] A magnet is arranged circumferentially along the magnet fixing member and embedded between two adjacent positioning strips.

[0009] The technical effects achieved by adopting this technical solution are as follows: By setting up a magnet fixing component with multiple positioning strips distributed circumferentially, the magnet can be accurately embedded between adjacent positioning strips, which significantly enhances the fixing effect of the magnet and prevents the magnet from shifting or loosening due to centrifugal force when the rotor rotates at high speed. This ensures that the magnet remains stable during high-speed rotation, thereby ensuring the uniformity and stability of the magnetic field and realizing the high performance and high reliability of the silicon steel sheet rotor.

[0010] Optionally, the magnet fixing component includes a connecting part and a positioning part, the positioning strip is disposed on the positioning part, and the connecting part is connected to the end face of the rotor yoke.

[0011] The technical effects achieved by adopting this technical solution are as follows: by designing the magnet fixing part as a combination of a connecting part and a positioning part, the connecting part is connected to the end face of the rotor yoke to ensure a stable connection between the magnet fixing part and the rotor yoke, and the positioning part is equipped with a positioning strip to ensure a stable connection between the magnet fixing part and the magnet.

[0012] Optionally, a positioning groove is formed between two adjacent positioning strips, and the magnet is embedded in the positioning groove.

[0013] The technical effects achieved by adopting this technical solution are as follows: By setting positioning strips on the magnet fixing parts, positioning grooves are formed between two adjacent positioning strips. The magnets are embedded in the positioning grooves, which realizes the precise positioning and uniform distribution of the magnets. This further effectively prevents the magnets from shifting or loosening during high-speed rotation, and improves the stability of the rotor structure and the symmetry of the magnetic field.

[0014] Optionally, the rotor yoke has a keyway on its side and the magnet fixing member has a positioning key, so that the rotor yoke and the magnet fixing member can be tightly fitted by the keyway and the positioning key.

[0015] The technical effects achieved by adopting this technical solution are as follows: By setting a keyway on the side of the rotor yoke and setting a positioning key on the magnet fixing component, the two can achieve a tight fit through the keyway and positioning key, which ensures the precise alignment and firm connection between the magnet fixing component and the rotor yoke, and effectively improves the overall rigidity and stability of the rotor structure.

[0016] Optionally, the connecting part has a first fixing hole, and the end face of the rotor yoke has a second fixing hole. Fasteners are used to fasten the rotor yoke and the magnet fixing member through the first fixing hole and the second fixing hole.

[0017] The technical effect achieved by adopting this technical solution is as follows: by opening a first fixing hole in the connection part and a second fixing hole in the end face of the rotor yoke, and using fasteners to tightly connect the two, a firm fit between the magnet fixing part and the rotor yoke is further realized.

[0018] Optionally, the positioning strip may extend to a point less than or equal to half the axial dimension of the magnet.

[0019] The technical effects achieved by adopting this technical solution are as follows: by extending the positioning strip to a point less than or equal to half the axial dimension of the magnet, both precise positioning and reliable fixation of the magnet are achieved, while avoiding excessive obstruction of the magnetic circuit by the positioning strip, thus optimizing the distribution and utilization rate of the magnetic field.

[0020] Optionally, the width of the positioning groove has a structure that is wide at first and then narrows along the direction away from the magnet.

[0021] The technical effects achieved by adopting this technical solution are as follows: By designing the width of the positioning groove to be wider and then narrower along the direction of the magnet, it is convenient for the rapid installation and precise positioning of the magnet. At the same time, the gradually narrowing structure forms a progressive constraint on the magnet, which enhances the fixing effect of the magnet when rotating at high speed and further prevents the magnet from shifting or loosening.

[0022] Optionally, the positioning groove is made by a stamping process.

[0023] The technical effects achieved by adopting this technical solution are as follows: By using a stamping process to manufacture positioning grooves, this technical solution not only achieves high precision, high efficiency, and low cost in positioning groove manufacturing, but also allows for flexible adjustment of the mold according to design requirements, adapting to the processing of positioning grooves of different sizes and shapes, and meeting diverse product needs.

[0024] Optionally, the silicon steel sheet rotor may further include a steel sleeve, which is fitted around the periphery of the magnet.

[0025] The technical effects achieved by adopting this technical solution are as follows: By wrapping the magnet with a steel sleeve, the steel sleeve provides additional protection for the magnet, further improving the reliability of the rotor and extending the service life of the motor.

[0026] This utility model also provides an electric motor, including a silicon steel sheet rotor as described in any of the above technical solutions and a stator assembled with the silicon steel sheet rotor.

[0027] The technical effects achieved by adopting this solution are as follows: the stable fixing and precise positioning of the magnets form a highly efficient and stable motor structure, which significantly improves the motor's operating efficiency and service life. Attached Figure Description

[0028] Figure 1 Exploded view of the silicon steel sheet rotor structure provided by this utility model;

[0029] Figure 2 A schematic diagram of the rotor yoke provided by this utility model;

[0030] Figure 3 This is a structural schematic diagram of the magnetic steel fixing component provided by this utility model;

[0031] Figure 4 A schematic diagram of the two-dimensional structure of the silicon steel sheet rotor provided by this utility model;

[0032] Figure 5 A three-dimensional structural schematic diagram of the silicon steel sheet rotor provided by this utility model;

[0033] Figure 6 A two-dimensional structural diagram of the motor provided by this utility model;

[0034] Figure 7 A three-dimensional structural diagram of the motor provided by this utility model.

[0035] Explanation of reference numerals in the attached figures:

[0036] 1. Rotor yoke; 11. End face; 12. Side face; 13. Keyway; 14. Second fixing hole; 2. Magnet fixing piece; 21. Positioning strip; 22. Connecting part; 23. Positioning part; 24. Positioning key; 25. First fixing hole; 3. Magnet; 4. Fastener; 5. Steel sleeve. Detailed Implementation

[0037] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below.

[0038] Please see Figures 1 to 5 , Figure 1 This is an exploded view of the silicon steel sheet rotor structure provided by this utility model. Figure 2 This is a schematic diagram of the rotor yoke provided by this utility model. Figure 3 This is a structural schematic diagram of the magnetic steel fixing component provided by this utility model. Figure 4 This is a schematic diagram of the two-dimensional structure of the silicon steel sheet rotor provided by this utility model. Figure 5 This is a three-dimensional structural diagram of the silicon steel sheet rotor provided by this utility model. This application provides a silicon steel sheet rotor, including: a rotor yoke 1, a magnet fixing member 2, and a magnet 3. The rotor yoke 1 has a centrally located shaft hole for engaging with a rotating shaft. The magnet fixing member 2 is located on at least one end face 11 of the rotor yoke 1, and has multiple circumferentially distributed positioning strips 21. The magnet 3 is arranged circumferentially along the magnet fixing member 2 and embedded between adjacent positioning strips 21. By setting the magnet fixing member 2, and having multiple circumferentially distributed positioning strips 21, the magnet 3 can be precisely embedded between adjacent positioning strips 21, significantly enhancing the fixing effect of the magnet 3. This prevents the magnet 3 from shifting or loosening due to centrifugal force during high-speed rotor rotation, ensuring the magnet 3 remains stable during high-speed rotation. This ensures the uniformity and stability of the magnetic field, achieving high performance and high reliability of the silicon steel sheet rotor. The magnet fixing member 2 can be made of silicon steel sheet material with high permeability and low iron loss.

[0039] Furthermore, the magnet fixing component 2 includes a connecting part 22 and a positioning part 23. The positioning strip 21 is disposed on the positioning part 23. The connecting part 22 is connected to the end face 11 of the rotor yoke 1 to ensure a stable connection between the magnet fixing component 2 and the rotor yoke 1. At the same time, the connecting part 22 and the positioning part 23 can be designed as an integrated unit to reduce the number of parts and improve structural rigidity.

[0040] Furthermore, a positioning groove is formed between two adjacent positioning strips 21, and the magnet 3 is embedded in the positioning groove, achieving precise positioning and uniform distribution of the magnet 3. This effectively prevents the magnet 3 from shifting or loosening during high-speed rotation, improving the stability and magnetic field symmetry of the rotor structure. Moreover, due to the setting of the positioning strips 21, there is a gap between two adjacent magnets 3, meaning that two adjacent magnets 3 do not need to be in close contact, which can also effectively save magnet raw materials. It should be noted that the distribution density of the positioning strips 21 can be adjusted according to the rotor size and speed requirements. For high-speed rotors, the number of positioning strips 21 can be increased to improve the fixing effect of the magnet 3.

[0041] Furthermore, by providing a keyway 13 on the side 12 of the rotor yoke 1 and a positioning key 24 on the magnet fixing member 2, the two achieve a tight fit through the keyway 13 and the positioning key 24. This not only enables effective transmission of the silicon steel sheet rotor but also prevents rotation, ensuring precise alignment and a firm connection between the magnet fixing member 2 and the rotor yoke 1, effectively improving the overall rigidity and stability of the rotor structure. In high-speed or high-torque applications, the number of keyways 13 and positioning keys 24 can be increased to improve connection rigidity and torsional resistance.

[0042] In other embodiments, the connecting part 22 has a first fixing hole 25, and the end face 11 of the rotor yoke 1 has a second fixing hole 14. The fastener 4 fastens the rotor yoke 1 and the magnet fixing member 2 through the first fixing hole 25 and the second fixing hole 14. The fastener 4 tightly connects the two, further realizing the firm fit between the magnet fixing member 2 and the rotor yoke 1. The fastener 4 can be a high-strength bolt or rivet. The first fixing hole 25 can be evenly distributed on the connecting part 22 of the magnet fixing member 2, and the second fixing hole 14 is correspondingly evenly distributed on the end face 11 of the rotor yoke 1. There is at least one first fixing hole 25 and one second fixing hole 14.

[0043] In some other embodiments, the positioning strip 21 may extend to a point less than or equal to half the axial dimension of the magnet 3, such as extending to a point less than or equal to a quarter the axial dimension of the magnet 3, or extending to a point just abutting the end face 11 of the rotor yoke 1. The portion of the magnet not embedded by the positioning strip 21 directly abuts the rotor yoke. This structural design achieves precise positioning and reliable fixation of the magnet 3, while avoiding excessive obstruction of the magnetic circuit of the magnet 3 by the positioning strip 21, thus optimizing the distribution and utilization of the magnetic field.

[0044] In some other embodiments, the width of the positioning groove is wide at first and then narrows along the direction of the magnet 3. The width of the positioning groove gradually decreases from the bottom of the groove to the opening of the groove, forming a wedge-shaped structure, which facilitates the rapid installation and precise positioning of the magnet 3. At the same time, the gradually narrowing structure forms a progressive constraint on the magnet 3, which enhances the fixing effect of the magnet 3 when rotating at high speed and further prevents the magnet 3 from shifting or loosening.

[0045] Furthermore, the positioning groove is manufactured through a stamping process. By using a stamping process to manufacture the positioning groove, not only is high precision, high efficiency, and low cost achieved, but it can also adapt to the processing of positioning grooves of different sizes and shapes, meeting diverse product needs.

[0046] In some other embodiments, the silicon steel sheet rotor also includes a steel sleeve 5, which is sleeved around the magnet 3. The steel sleeve 5 provides additional protection for the magnet 3, further improving the reliability of the rotor and extending the service life of the motor.

[0047] The specific manufacturing process of the silicon steel sheet rotor is as follows: The magnet fixing part 2 is tightly combined with the rotor yoke 1 through a press-fitting process. During the press-fitting process, the positioning key 24 of the magnet fixing part 2 is aligned with the keyway 13 of the rotor yoke 1 to ensure accurate circumferential positioning of the two. At the same time, the first fixing hole 25 on the connecting part 22 is aligned with the second fixing hole 14 on the end face 11 of the rotor yoke 1 so that it can be fixed by fastener 4 later. After press-fitting, high-strength adhesive is applied to the rotor yoke 1. The magnet 3 is precisely embedded in the positioning groove of the magnet fixing part 2 to ensure tight bonding between the magnet 3 and the rotor yoke 1. Then, adhesive is applied to the outer surface of the magnet 3. The steel sleeve 5 is then pressed onto the silicon steel sheet rotor with the magnet 3 attached, so that the magnet fixing part 2, the magnet 3 and the steel sleeve 5 form a multi-layer firm bond with the rotor yoke 1. The adhesive selected must have high bonding strength, high temperature resistance and centrifugal force resistance. During the adhesive application process, the amount and uniformity of the adhesive must be controlled to avoid adhesive overflow affecting the positioning accuracy of the magnet 3.

[0048] Please continue reading. Figure 6 and Figure 7 , Figure 6 This is a two-dimensional structural diagram of the motor provided by this utility model. Figure 7 The present invention provides a three-dimensional structural diagram of the motor. This application also provides a motor, including a silicon steel sheet rotor as described in any of the above embodiments and a stator assembled with the silicon steel sheet rotor. The stable fixing and precise positioning of the magnet 3 form an efficient and stable motor structure, which significantly improves the motor's operating efficiency and service life.

[0049] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the present invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.

Claims

1. A silicon steel sheet rotor, characterized by, The utility model relates to a rotor of silicon steel sheet motor, comprising: a rotor yoke (1) provided with an axial hole in the center for matching with a rotating shaft; a magnetic steel fixing part (2) provided on at least one end face (11) of the rotor yoke (1); the magnetic steel fixing part (2) is provided with a plurality of positioning strips (21) distributed in the circumferential direction; a magnetic steel (3) arranged in the circumferential direction of the magnetic steel fixing part (2) and embedded between two adjacent positioning strips (21).

2. The silicon steel sheet rotor according to claim 1, characterized by The magnetic steel fixing part (2) comprises a connecting part (22) and a positioning part (23), the positioning strips (21) are arranged on the positioning part (23), and the connecting part (22) is connected with the end face (11) of the rotor yoke (1).

3. The silicon steel sheet rotor according to claim 1, characterized by A positioning groove is formed between two adjacent positioning strips (21), and the magnetic steel (3) is embedded in the positioning groove.

4. The silicon steel sheet rotor according to claim 1, characterized by The side face (12) of the rotor yoke (1) is provided with a key groove (13), the magnetic steel fixing part (2) is provided with a positioning key (24), the rotor yoke (1) and the magnetic steel fixing part (2) are tightly matched through the key groove (13) and the positioning key (24).

5. The silicon steel sheet rotor according to claim 2, characterized by The connecting part (22) is provided with a first fixing hole (25), the end face (11) of the rotor yoke (1) is provided with a second fixing hole (14), and a fastener (4) fastens the rotor yoke (1) and the magnetic steel fixing part (2) through the first fixing hole (25) and the second fixing hole (14).

6. The silicon steel sheet rotor according to claim 1, characterized by The positioning strip (21) can extend to less than or equal to one half of the axial dimension of the magnetic steel (3).

7. The silicon steel sheet rotor according to claim 3, characterized by The width of the positioning groove is wide at first and narrow at last along the direction of the magnetic steel (3).

8. The silicon steel sheet rotor according to claim 3, characterized by The positioning groove is made by a stamping process.

9. The silicon steel sheet rotor according to claim 1, characterized by Further comprising a steel sleeve (5) sleeved on the periphery of the magnetic steel (3).

10. An electric machine characterized by A stator assembled with the silicon steel sheet rotor of any one of claims 1 to 9.

Images