Rotor structure of motor

Abstract

The utility model discloses a rotor structure of a motor, which comprises an integrated rotating shaft, coupling rings and a plurality of magnetic rings, the magnetic rings are provided with insertion holes, the integrated rotating shaft penetrates through the insertion holes of the plurality of magnetic rings, two adjacent magnetic rings are connected through the coupling rings, two opposite sides of the coupling rings are respectively provided with positioning bulges, and the positioning bulges are arranged on the two opposite sides of the coupling rings. The extending direction of the positioning protrusion is the same as the extending direction of the central axis of the integrated rotating shaft. The magnetic ring is provided with a positioning hole matched with the positioning bulge; according to the rotor structure of the motor provided by the utility model, a flexible modular design is provided through a combination mode of the integrated rotating shaft and the plurality of magnetic rings, so that the rotor structure can adapt to motors with different sizes and power requirements. According to the design, the requirement for a special production mold is reduced, the production cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a rotor structure of a motor. Background Art

[0002] In the field of motor technology, rotor design is crucial to motor performance, efficiency, and reliability. Existing rotor structures typically consist of a rotating shaft and magnetic rings. This design limits their application in motors of varying sizes, as different motor sizes require rotor structures of varying sizes. This results in a single production mold that cannot accommodate the production of rotor structures of varying sizes. Utility Model Content

[0003] The technical problem to be solved by the utility model is to provide a rotor structure of a motor with high size adaptability.

[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is: a rotor structure of a motor, including an integrated rotating shaft, a coupling ring and multiple magnetic rings, the magnetic rings are provided with plug-in holes, the integrated rotating shaft passes through the plug-in holes of the multiple magnetic rings, and the two adjacent magnetic rings are connected through the coupling ring, and positioning protrusions are respectively provided on opposite sides of the coupling ring, and the extension direction of the positioning protrusions is the same as the extension direction of the central axis of the integrated rotating shaft; the magnetic rings are provided with positioning holes that cooperate with the positioning protrusions.

[0005] Furthermore, the hardness of the coupling ring is smaller than the hardness of the magnetic ring.

[0006] Furthermore, a plurality of positioning protrusions are respectively provided on opposite sides of the coupling ring.

[0007] Furthermore, the plurality of positioning protrusions are centrally symmetrically distributed relative to the central axis of the integrated rotating shaft.

[0008] Furthermore, an injection molded part is provided on the inner side wall of the magnetic ring, and the plug hole is provided on the injection molded part.

[0009] Furthermore, the side wall of the positioning protrusion is provided with an air guide groove, and the extending direction of the air guide groove is the same as the extending direction of the positioning protrusion.

[0010] Furthermore, a blocking protrusion is provided at one end of the air guide groove close to the coupling ring.

[0011] Furthermore, the side walls of the coupling ring and / or the magnetic ring are provided with an indicator coating, and when the coupling ring is connected to the magnetic ring, the indicator coating is blocked between the coupling ring and the magnetic ring.

[0012] Furthermore, the indicator coating is made of reflective material.

[0013] Furthermore, the cross-sectional shape of the positioning protrusion is circular, elliptical or regular polygonal.

[0014] The beneficial effects of the present invention are as follows: the rotor structure of the motor provided by the present invention provides a flexible modular design through the combination of an integrated rotating shaft and multiple magnetic rings, so that the rotor structure can adapt to motors of different sizes and power requirements. This design reduces the need for special production molds, reduces production costs, and improves production efficiency; the through-design of the plug-in hole on the magnetic ring and the integrated rotating shaft, combined with the cooperation of the positioning protrusion on the coupling ring and the positioning hole on the magnetic ring, ensures the position accuracy and alignment of the magnetic ring on the rotating shaft. This precise positioning helps to reduce vibration and noise during rotor operation and improve the operating efficiency and life of the motor; the use of the coupling ring disperses the stress on the rotating shaft to multiple contact points, reducing stress concentration, thereby reducing the risk of rotor structure failure. This design improves the reliability of the rotor structure, especially under high load or high-speed operating conditions; due to the modular design of the magnetic ring and the coupling ring, the assembly and maintenance of the rotor structure become simpler. When individual magnetic rings need to be replaced or repaired, the entire rotor does not need to be disassembled, thereby reducing maintenance costs and downtime; the design of the coupling ring not only provides structural stability, but also enhances the overall rigidity and anti-deformation ability of the rotor structure through the cooperation of its positioning protrusions with the positioning holes of the magnetic rings; the rotor structure design allows for adapting to different motor designs and performance requirements by increasing or decreasing the number of magnetic rings or adjusting the design of the coupling ring, providing wide application adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is an assembly diagram of the rotor structure of the motor according to the first embodiment of the present invention;

[0016] Figure 2 This is an exploded view of the rotor structure of the motor according to the first embodiment of the present invention;

[0017] Figure 3 This is a schematic cross-sectional view of the rotor structure of the motor according to the first embodiment of the present invention.

[0018] Description of labels:

[0019] 1. Integrated rotating shaft; 2. Magnetic ring; 21. Positioning hole; 22. Injection molded part; 23. Connecting hole; 3. Coupling ring; 31. Positioning protrusion. DETAILED DESCRIPTION

[0020] In order to explain the technical content, achieved objectives and effects of the present invention in detail, the following description is given in conjunction with the embodiments and the accompanying drawings.

[0021] Please refer to Figures 1 to 3A rotor structure of a motor includes an integrated rotating shaft 1, a coupling ring 3 and multiple magnetic rings 2, wherein the magnetic rings 2 are provided with plug-in holes 23, the integrated rotating shaft 1 passes through the plug-in holes 23 of the multiple magnetic rings 2, and two adjacent magnetic rings 2 are connected by the coupling ring 3, and positioning protrusions 31 are respectively provided on opposite sides of the coupling ring 3, and the extending direction of the positioning protrusions 31 is the same as the extending direction of the central axis of the integrated rotating shaft 1; the magnetic rings 2 are provided with positioning holes 21 that cooperate with the positioning protrusions 31.

[0022] As can be seen from the above description, the beneficial effects of the present invention are as follows: by combining an integrated rotating shaft 1 with multiple magnetic rings 2, a flexible modular design is provided, allowing the rotor structure to adapt to motors of varying sizes and power requirements. This design reduces the need for specialized production molds, lowers production costs, and improves production efficiency. The through-hole design of the magnetic ring 2's insertion hole 23 and the integrated rotating shaft 1, combined with the alignment of the positioning protrusion 31 on the coupling ring 3 with the positioning hole 21 on the magnetic ring 2, ensures the precise positioning and alignment of the magnetic ring 2 on the rotating shaft. This precise positioning helps reduce vibration and noise during rotor operation, improving the operating efficiency and lifespan of the motor. The use of the coupling ring 3 distributes stress on the rotating shaft to multiple contact points, reducing stress concentration and thus lowering the risk of rotor failure. This design improves the reliability of the rotor structure, especially under high-load or high-speed operating conditions. The modular design of the magnetic ring 2 and coupling ring 3 simplifies assembly and maintenance of the rotor structure. When individual magnetic rings 2 need to be replaced or repaired, the entire rotor does not need to be disassembled, thereby reducing maintenance costs and downtime; the design of the coupling ring 3 not only provides structural stability, but also enhances the overall rigidity and anti-deformation ability of the rotor structure through the cooperation of its positioning protrusion 31 with the positioning hole 21 of the magnetic ring 2; the rotor structure design allows adaptation to different motor designs and performance requirements by increasing or decreasing the number of magnetic rings 2 or adjusting the design of the coupling ring 3, providing wide application adaptability.

[0023] Furthermore, the hardness of the coupling ring 3 is smaller than the hardness of the magnetic ring 2 .

[0024] From the above description, it can be seen that by setting the hardness of the coupling ring 3 to be smaller than the hardness of the magnetic ring 2, the coupling ring 3 can be used as a stress release point when subjected to external force impact, thereby protecting the magnetic ring 2 with higher hardness from damage and extending the service life of the entire rotor structure.

[0025] Furthermore, a plurality of positioning protrusions 31 are respectively provided on two opposite sides of the coupling ring 3 .

[0026] As can be seen from the above description, multiple positioning protrusions 31 are provided on opposite sides of the coupling ring 3, which can increase the contact points between the coupling ring 3 and the magnetic ring 2, improve the stability and reliability of the connection, and also help to disperse stress and reduce stress concentration at a single contact point.

[0027] Furthermore, the plurality of positioning protrusions 31 are distributed in a centrosymmetrical manner relative to the central axis of the integrated rotating shaft 1 .

[0028] From the above description, it can be seen that the positioning protrusions 31 are centrally symmetrically distributed relative to the central axis of the integrated rotating shaft 1, which helps to ensure the balance of the rotor structure, reduce vibration and noise caused by asymmetric design, and improve the operating efficiency and stability of the motor.

[0029] Furthermore, an injection molded part 22 is provided on the inner side wall of the magnetic ring 2 , and the plug hole 23 is provided on the injection molded part 22 .

[0030] From the above description, it can be seen that the inner wall of the magnetic ring 2 is provided with an injection molded part 22, and the plug hole 23 is provided on the injection molded part 22. This design can improve the mechanical strength and durability of the magnetic ring 2. At the same time, the injection molded part 22 can serve as a protective layer to reduce the direct friction between the magnetic ring 2 and the rotating shaft, thereby extending the service life.

[0031] Furthermore, an air guide groove is provided on the side wall of the positioning protrusion 31 , and the extending direction of the air guide groove is the same as the extending direction of the positioning protrusion 31 .

[0032] From the above description, it can be seen that the side wall of the positioning protrusion 31 is provided with an air guide groove, which helps to release internal pressure during the assembly or operation of the rotor structure and reduce structural damage caused by pressure accumulation. At the same time, the extension direction of the air guide groove is the same as the extension direction of the positioning protrusion 31, which helps to maintain the symmetry and balance of the rotor structure.

[0033] Furthermore, a blocking protrusion is provided at one end of the air guide groove close to the coupling ring 3 .

[0034] As can be seen from the above description, a sealing protrusion is provided at one end of the air guide groove near the coupling ring 3, which can prevent foreign matter from entering or gas leakage after the air guide groove completes its air guiding function, thereby protecting the cleanliness and sealing of the rotor structure.

[0035] Furthermore, the side walls of the coupling ring 3 and / or the magnetic ring 2 are provided with an indicator coating. When the coupling ring 3 is connected to the magnetic ring 2 , the indicator coating is blocked between the coupling ring 3 and the magnetic ring 2 .

[0036] As can be seen from the above description, the side walls of the coupling ring 3 and / or the magnetic ring 2 are provided with an indicator coating. When the coupling ring 3 is connected to the magnetic ring 2, the indicator coating is blocked between the two. This design can serve as a visual indicator to help quickly identify the assembly status of the rotor structure and improve assembly efficiency and accuracy.

[0037] Furthermore, the indicator coating is made of reflective material.

[0038] As can be seen from the above description, the indicator coating uses reflective material, which can provide better visibility in a dimly lit environment, which is very useful for motor maintenance and repair in complex or low-light environments.

[0039] Furthermore, the cross-sectional shape of the positioning protrusion 31 is circular, elliptical or regular polygonal.

[0040] As can be seen from the above description, the cross-sectional shape of the positioning protrusion 31 can be circular, elliptical, or regular polygonal. This diverse design allows the most appropriate shape to be selected based on different needs and application scenarios to optimize the performance and durability of the rotor structure. For example, a circular protrusion can provide better stress distribution, while a polygonal protrusion may provide stronger connection strength.

[0041] Please refer to Figures 1 to 3, Embodiment 1 of the present invention is: a rotor structure of a motor, comprising an integrated rotating shaft 1, a coupling ring 3 and a plurality of magnetic rings 2, the magnetic ring 2 being provided with a plug-in hole 23, the integrated rotating shaft 1 passing through the plug-in holes 23 of the plurality of magnetic rings 2, two adjacent magnetic rings 2 being connected by the coupling ring 3, and positioning protrusions 31 being respectively provided on opposite sides of the coupling ring 3, the extending direction of the positioning protrusion 31 being the same as the extending direction of the central axis of the integrated rotating shaft 1; the magnetic ring 2 being provided with a positioning hole 21 cooperating with the positioning protrusion 31; it can be understood that by combining the integrated rotating shaft 1 and the plurality of magnetic rings 2, a flexible modular design is provided, so that the rotor structure can adapt to motors of different sizes and power requirements. This design reduces the need for specialized production molds, lowers production costs, and improves production efficiency. The through-hole design of the plug-in hole 23 on the magnetic ring 2 and the integrated rotating shaft 1, combined with the positioning protrusion 31 on the coupling ring 3 and the positioning hole 21 on the magnetic ring 2, ensures the positional accuracy and alignment of the magnetic ring 2 on the rotating shaft. This precise positioning helps reduce vibration and noise during rotor operation and improves the operating efficiency and life of the motor. The use of the coupling ring 3 disperses stress on the rotating shaft to multiple contact points, reducing stress concentration and thus reducing the risk of rotor structural failure. This design improves the reliability of the rotor structure, especially under high-load or high-speed operating conditions. Due to the modular design of the magnetic ring 2 and coupling ring 3, the assembly and maintenance of the rotor structure are simplified. When individual magnetic rings 2 need to be replaced or repaired, the entire rotor does not need to be disassembled, thereby reducing maintenance costs and downtime; the design of the coupling ring 3 not only provides structural stability, but also enhances the overall rigidity and anti-deformation ability of the rotor structure through the cooperation of its positioning protrusion 31 with the positioning hole 21 of the magnetic ring 2; the rotor structure design allows adaptation to different motor designs and performance requirements by increasing or decreasing the number of magnetic rings 2 or adjusting the design of the coupling ring 3, providing wide application adaptability.

[0042] Preferably, the hardness of the coupling ring 3 is less than the hardness of the magnetic ring 2. By setting the hardness of the coupling ring 3 to be less than the hardness of the magnetic ring 2, the coupling ring 3 can be used as a stress release point when subjected to external force impact, thereby protecting the magnetic ring 2 with higher hardness from damage and extending the service life of the entire rotor structure.

[0043] Optionally, the number of the positioning protrusions 31 can be set according to actual application requirements; specifically in the present embodiment, a plurality of the positioning protrusions 31 are provided on opposite sides of the coupling ring 3, thereby increasing the contact points between the coupling ring 3 and the magnetic ring 2, improving the stability and reliability of the connection, and also helping to disperse stress and reduce stress concentration at a single contact point; specifically, the plurality of the positioning protrusions 31 are centrally symmetrically distributed relative to the central axis of the integrated rotating shaft 1, thereby helping to ensure the balance of the rotor structure, reduce vibration and noise caused by asymmetric design, and improve the operating efficiency and stability of the motor.

[0044] Preferably, an injection molded part 22 is provided on the inner wall of the magnetic ring 2, and the plug hole 23 is provided on the injection molded part 22. This design can improve the mechanical strength and durability of the magnetic ring 2. At the same time, the injection molded part 22 can serve as a protective layer to reduce the direct friction between the magnetic ring 2 and the rotating shaft, thereby extending the service life.

[0045] Optionally, the side wall of the positioning protrusion 31 is provided with an air guide groove (not shown in the figure), and the extension direction of the air guide groove is the same as the extension direction of the positioning protrusion 31. This helps to release internal pressure during the assembly or operation of the rotor structure and reduce structural damage caused by pressure accumulation. At the same time, the extension direction of the air guide groove is the same as the extension direction of the positioning protrusion 31, which helps to maintain the symmetry and balance of the rotor structure. Further optionally, the air guide groove is provided with a blocking protrusion (not shown in the figure) at one end near the coupling ring 3. It can be understood that the air guide groove is provided with a blocking protrusion at one end near the coupling ring 3, which can prevent foreign matter from entering or gas leakage after the air guide groove completes its air guiding function, thereby protecting the cleanliness and sealing of the inside of the rotor structure.

[0046] Optionally, the side walls of the coupling ring 3 and / or the magnetic ring 2 are provided with an indicator coating (not shown). When the coupling ring 3 is connected to the magnetic ring 2, the indicator coating is blocked between the coupling ring 3 and the magnetic ring 2. This design can serve as a visual indication to help quickly identify the assembly status of the rotor structure and improve assembly efficiency and accuracy. Further optionally, the material of the indicator coating is reflective material, so that better visibility can be provided in a dark environment, which is very useful for motor maintenance and repair in complex or low-light environments.

[0047] Optionally, the cross-sectional shape of the positioning protrusion 31 can be circular (as in this embodiment), elliptical, or regular polygonal. This diverse design allows for selecting the most appropriate shape based on different needs and application scenarios to optimize the performance and durability of the rotor structure. For example, a circular protrusion can provide better stress distribution, while a polygonal protrusion may provide stronger connection strength.

[0048] In summary, the rotor structure of the motor provided by the present invention provides a flexible modular design through the combination of an integrated rotating shaft and multiple magnetic rings, so that the rotor structure can adapt to motors of different sizes and power requirements. This design reduces the need for dedicated production molds, reduces production costs, and improves production efficiency; the through-design of the plug-in holes on the magnetic rings and the integrated rotating shaft, combined with the cooperation of the positioning protrusions on the coupling rings and the positioning holes on the magnetic rings, ensures the positional accuracy and alignment of the magnetic rings on the rotating shaft. This precise positioning helps to reduce vibration and noise during rotor operation and improve the operating efficiency and life of the motor; the use of coupling rings disperses the stress on the rotating shaft to multiple contact points, reducing stress concentration and thus reducing the risk of rotor structure failure. This design improves the reliability of the rotor structure, especially under high load or high-speed operating conditions; due to the modular design of the magnetic rings and coupling rings, the assembly and maintenance of the rotor structure become easier. When individual magnetic rings need to be replaced or repaired, the entire rotor does not need to be disassembled, thereby reducing maintenance costs and downtime; the design of the coupling ring not only provides structural stability, but also enhances the overall rigidity and anti-deformation ability of the rotor structure through the cooperation of its positioning protrusions with the positioning holes of the magnetic rings; the rotor structure design allows for adapting to different motor designs and performance requirements by increasing or decreasing the number of magnetic rings or adjusting the design of the coupling ring, providing wide application adaptability.

[0049] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent transformations made using the contents of the description and drawings of the present invention, or directly or indirectly applied in the relevant technical field, are also included in the patent protection scope of the present invention.

Claims

1. A rotor structure of a motor, characterized in that: It includes an integrated rotating shaft, a coupling ring and multiple magnetic rings, the magnetic rings are provided with plug-in holes, the integrated rotating shaft passes through the plug-in holes of the multiple magnetic rings, two adjacent magnetic rings are connected through the coupling ring, and positioning protrusions are respectively provided on opposite sides of the coupling ring, and the extending direction of the positioning protrusions is the same as the extending direction of the central axis of the integrated rotating shaft; the magnetic rings are provided with positioning holes that cooperate with the positioning protrusions.

2. The rotor structure of the motor according to claim 1, characterized in that: The hardness of the coupling ring is smaller than the hardness of the magnetic ring.

3. The rotor structure of the motor according to claim 1, characterized in that: A plurality of positioning protrusions are respectively provided on opposite sides of the coupling ring.

4. The rotor structure of the motor according to claim 3, characterized in that: The plurality of positioning protrusions are distributed in a central symmetrical manner relative to the central axis of the integrated rotating shaft.

5. The rotor structure of the motor according to claim 1, characterized in that: An injection molded part is provided on the inner side wall of the magnetic ring, and the plug hole is provided on the injection molded part.

6. The rotor structure of the motor according to claim 1, characterized in that: An air guide groove is provided on the side wall of the positioning protrusion, and the extending direction of the air guide groove is the same as the extending direction of the positioning protrusion.

7. The rotor structure of the motor according to claim 6, characterized in that: A blocking protrusion is provided at one end of the air guide groove close to the coupling ring.

8. The rotor structure of the motor according to claim 1, characterized in that: The side walls of the coupling ring and / or the magnetic ring are provided with an indicator coating. When the coupling ring is connected to the magnetic ring, the indicator coating is blocked between the coupling ring and the magnetic ring.

9. The rotor structure of the motor according to claim 8, characterized in that: The material of the indicating coating is reflective material.

10. The rotor structure of the motor according to claim 1, characterized in that: The cross-sectional shape of the positioning protrusion is circular, elliptical or regular polygonal.

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