Iron core, motor component, levitation motor, suspension assembly, and vehicle

Abstract

The application relates to a core, a motor component, a suspension motor, a suspension assembly and a vehicle. The core comprises a tooth portion and a yoke portion. An axle hole is arranged on the tooth portion; the yoke portion is independent of the tooth portion and coaxially connected with the tooth portion, the yoke portion at least partially protrudes from a first side surface of the tooth portion to form a winding mounting portion together with the first side surface; and at least one of the tooth portion and the yoke portion is an integrally-formed body. The core, the motor component, the suspension motor, the suspension assembly and the vehicle can solve the technical problem that the magnetic resistance of the suspension motor is relatively large and the magnetic leakage risk is relatively high in the related art.

Description

Technical Field

[0001] This application relates to the field of transportation technology, and more particularly to an iron core, motor components, suspension motor, suspension assembly, and vehicle. Background Technology

[0002] In related technologies, permanent magnet synchronous levitation motors used in electromagnetic suspensions utilize silicon steel sheets wound into a yoke and axially stacked into teeth to form the stator core of the motor in order to reduce eddy current losses. However, this structure has an air gap between adjacent silicon steel sheets, resulting in relatively large magnetic reluctance and a high risk of magnetic leakage. Utility Model Content

[0003] This application provides an iron core, motor component, suspension motor, suspension assembly, and vehicle to solve the technical problems of high magnetic resistance and high magnetic leakage risk in suspension motors in related technologies.

[0004] To achieve the above objectives, according to a first aspect of this application, an iron core is provided, comprising:

[0005] The toothed portion has a shaft hole provided on it;

[0006] A yoke portion, which is independent of and coaxially connected to the tooth portion, wherein the yoke portion at least partially protrudes from a first side surface of the tooth portion to form a winding mounting portion with the first side surface;

[0007] Wherein, at least one of the teeth and the yoke is an integrally formed body.

[0008] Optionally, at least one of the teeth and the yoke is a soft magnetic composite material structure.

[0009] Optionally, the iron core further includes an adapter ring, which is embedded in the shaft hole and coaxially arranged with the shaft hole. Along the axial direction of the shaft hole, the yoke is connected to the end face of the adapter ring.

[0010] Optionally, the adapter ring includes a DT4C ring or a No. 10 steel ring.

[0011] Optionally, the adapter ring and the teeth are connected and / or welded together via a first snap-fit ​​component; and / or,

[0012] The adapter ring and the yoke are connected by a second snap-fit ​​component and / or welded together.

[0013] Optionally, the first snap-fit ​​component includes a first snap-fit ​​protrusion and a first snap-fit ​​groove that are adapted to each other. One of the first snap-fit ​​protrusion and the first snap-fit ​​groove is disposed on the outer peripheral surface of the adapter ring, and the other is disposed on the inner wall surface of the shaft hole.

[0014] Optionally, the first snap-fit ​​component may include one or more, and when there are multiple first snap-fit ​​components, the multiple first snap-fit ​​components are evenly arranged at intervals along the outer periphery of the adapter ring.

[0015] Optionally, the second latching component includes a second latching protrusion and a second latching groove that are mutually adapted to each other, with one of the second latching protrusion and the second latching groove disposed on the adapter ring and the other disposed on the yoke.

[0016] Optionally, the second snap-fit ​​component may include one or more, and when there are multiple second snap-fit ​​components, the multiple second snap-fit ​​components are evenly arranged at intervals along the outer periphery of the adapter ring.

[0017] Optionally, the yoke is a ring structure, which is coaxially arranged with the adapter ring, and the inner diameter of the ring structure is larger than the inner diameter of the adapter ring.

[0018] Optionally, the inner wall surface of the adapter ring is provided with a positioning protrusion or a positioning groove; and / or,

[0019] The outer circumferential surface of the tooth is provided with a through-line section.

[0020] Secondly, this application also provides a motor component, which includes a stator assembly or a rotor assembly, wherein the stator assembly or the rotor assembly includes the aforementioned iron core.

[0021] Thirdly, this application also provides a levitation motor, which includes the motor components described above.

[0022] Fourthly, this application also provides a suspension assembly, which includes the aforementioned suspension motor.

[0023] Fifthly, this application also provides a vehicle that includes the aforementioned suspension motor; and / or includes the aforementioned suspension assembly.

[0024] In this application, by setting the teeth and yoke as independent structures, the magnetic circuit design is more flexible during actual manufacturing, which can reduce magnetic leakage, optimize the air gap magnetic field distribution, and reduce harmonic magnetic fields, thereby reducing torque ripple and motor losses and improving motor performance. Furthermore, by setting at least one of the teeth and yoke as an integral part, there is no air gap inside the teeth or yoke, which can further reduce the magnetic reluctance and leakage risk of the iron core.

[0025] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0028] Figure 1 This is a three-dimensional structural diagram of the iron core disclosed in the embodiments of this application from a first-view perspective;

[0029] Figure 2 This is a three-dimensional structural diagram of the iron core disclosed in the embodiments of this application when viewed from a second perspective;

[0030] Figure 3 This is a cross-sectional view of the iron core disclosed in the embodiments of this application;

[0031] Figure 4 This is a three-dimensional structural diagram of the teeth disclosed in the embodiments of this application;

[0032] Figure 5 This is a three-dimensional structural diagram of the yoke processing disclosed in the embodiments of this application from a first-view perspective;

[0033] Figure 6 This is a three-dimensional structural diagram of the yoke disclosed in the embodiments of this application when viewed from a second perspective;

[0034] Figure 7 This is a three-dimensional structural diagram of the adapter ring disclosed in the embodiments of this application;

[0035] Figure 8 This is a front view of the motor component disclosed in the embodiments of this application;

[0036] Figure 9 This is a three-dimensional structural diagram of the vehicle disclosed in the embodiments of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 100. Iron core;

[0039] 10. Toothed part; 11. Shaft hole; 12. Mounting part; 13. First side surface; 14. Wire guide part; 20. Yoke part; 30. Adapter ring; 31. Positioning protrusion; 40. First snap-fit ​​component; 41. First snap-fit ​​protrusion; 42. First snap-fit ​​groove; 50. Second snap-fit ​​component; 51. Second snap-fit ​​protrusion; 52. Second snap-fit ​​groove;

[0040] 200. Motor components;

[0041] 300. Vehicles. Detailed Implementation

[0042] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0043] As described in the background section, in order to reduce eddy current losses in levitation motors, silicon steel sheets are wound and axially stacked to form teeth to create the stator core of a permanent magnet synchronous levitation motor. In this structure, air gaps easily exist between the silicon steel sheets, resulting in high magnetic reluctance and a high risk of magnetic leakage. Therefore, this application provides a stator core in which there are no air gaps in the teeth or yoke, resulting in low magnetic reluctance and a low risk of magnetic leakage.

[0044] The core of this application will be described in detail below with reference to the accompanying drawings.

[0045] See Figures 1 to 3 As shown, according to an embodiment of this application, an iron core 100 is provided, which includes a toothed portion 10 and a yoke portion 20. The toothed portion 10 is provided with a shaft hole 11; the yoke portion 20 is independent of and coaxially connected to the toothed portion 10 (i.e., the yoke portion 20 and the toothed portion 10 are two independent structures, and they are coaxially arranged when they are engaged). The yoke portion 20 at least partially protrudes from the first side surface 13 of the toothed portion 10 to form a winding mounting portion 12 with the first side surface 13; wherein, at least one of the toothed portion 10 and the yoke portion 20 is an integrally molded body. It is understood that the integrally molded body in this embodiment refers to: the toothed portion 10 and the yoke portion 20 are each non-assembled structures, but are integral structures formed by injection molding or processing from a single sheet of material.

[0046] In this application, by setting the toothed portion 10 and the yoke portion 20 as independent structures, the magnetic circuit design is more flexible during actual manufacturing, which can reduce magnetic leakage, optimize the air gap magnetic field distribution, and reduce harmonic magnetic fields, thereby reducing torque ripple and motor losses and improving motor performance. Furthermore, by setting at least one of the toothed portion 10 and the yoke portion 20 as an integral part, there is no air gap inside the toothed portion 10 or the yoke portion 20, which can further reduce the magnetic reluctance and leakage magnetic risk of the core 100.

[0047] Furthermore, by setting the tooth portion 10 and the yoke portion 20 as independent structures in this embodiment, the winding installation process can be simplified. The tooth-yoke separation structure allows the winding to be wound onto the tooth portion 10 first, specifically on the first side 13 of the tooth portion 10, and then assembled with the yoke portion 20, reducing the difficulty of winding and minimizing the risk of damage to the coil insulation during the winding process. Simultaneously, the tooth-yoke separation structure provides more flexible space for winding arrangement, enabling a tighter winding layout, thereby increasing slot fill factor and improving the power density and efficiency of the motor. In actual processing and manufacturing, the materials of the tooth portion 10 and the yoke portion 20 can be selected according to actual needs, further optimizing motor performance.

[0048] In some embodiments, at least one of the tooth portion 10 and the stator yoke portion 20 is a soft magnetic composite material structure. That is, at least one of the tooth portion 10 and the yoke portion 20 can be prepared using soft magnetic composite materials. Soft magnetic composite material (SMC) is a new type of soft magnetic material made from soft magnetic powder (such as iron-silicon alloy powder, iron-nickel alloy powder, pure iron powder, etc.) as the core, after surface insulation coating, and then through processes such as pressing and heat treatment. It retains the core characteristics of soft magnetic materials—"easy to magnetize and easy to demagnetize"—and through powder metallurgy and insulation coating, achieves three-dimensional magnetic circuit design capabilities and low-loss advantages that are difficult to obtain with traditional bulk soft magnetic materials (such as silicon steel sheets). In this embodiment, by setting at least one of the tooth portion 10 and the yoke portion 20 as a soft magnetic composite material structure, the eddy current loss of the motor can be effectively reduced, and since there is no air gap between the tooth portion 10 and the yoke portion 20, the magnetic reluctance and magnetic leakage of the iron core 100 can be effectively reduced.

[0049] See Figures 1 to 3 As shown, in some embodiments, the stator core 100 further includes an adapter ring 30, which is embedded in and coaxially arranged with the shaft hole 11. Along the axial direction of the shaft hole 11, the yoke 20 is connected to the end face of the adapter ring 30. In this application, by setting the adapter ring 30 to connect the toothed portion 10 and the yoke 20, the winding method of the winding can be optimized. Compared with the traditional method of embedding flat wire from the toothed portion, winding is more convenient, reducing the risk of damage to the coil insulation during the embedding process. It also helps to improve the slot fill factor, thereby improving the power density and efficiency of the motor.

[0050] In some embodiments, the adapter ring 30 includes a DT4C ring or a No. 10 steel ring. That is, the adapter ring 30 in this embodiment can be a ring structure made of DT4C material or a ring structure made of No. 10 steel. DT4C is an electromagnetically pure iron material with advantages such as high permeability, low coercivity, and magnetic stability. The initial permeability of DT4C can reach 35,000, and the maximum permeability can reach 120,000. It has minimal energy loss during magnetization and demagnetization, which can reduce the hysteresis loss of the iron core and improve the operating efficiency and energy-saving performance of the motor. The saturation magnetic induction intensity of DT4C is 1.5T, which allows it to work in a strong magnetic field without magnetic saturation, enabling the motor iron core to withstand a larger magnetic flux and improving the power density and output capacity of the motor. Furthermore, DT4C exhibits excellent cold and hot working properties. Cold working can meet the requirements of processes such as turning, pressing, punching, bending, and drawing. During hot working, it shows low sensitivity to red brittleness and can be processed over a wide temperature range, facilitating the manufacture and processing of iron cores. It can be machined into high-precision electrical components, such as the toothed grooves of iron cores. 10# steel is a low-carbon structural steel (containing approximately 0.07%-0.14% carbon). Although it is not a "soft magnetic material" specifically designed for electromagnetic applications (such as silicon steel or electromagnetic pure iron DT4C), it still demonstrates advantages in specific iron core applications due to its fundamental properties. Its core advantages lie in cost, machinability, and mechanical strength. Compared to specialized soft magnetic materials (such as silicon steel sheets which are more brittle and electromagnetic pure iron which has lower strength), 10# steel has a more moderate tensile strength (approximately 335-410 MPa) and yield strength (approximately 205 MPa), while also possessing a certain degree of toughness.

[0051] As can be seen, in this embodiment, the adapter ring 30 includes a DT4C ring or a No. 10 steel ring, and a hybrid iron core of isotropic materials with high magnetic permeability and high electrical conductivity such as DTC4 or No. 10 steel and SMC, which can meet the output power requirements of the motor system under high-speed operating conditions with high peak thrust.

[0052] Further, see Figures 1 to 7 As shown, in this embodiment, the adapter ring 30 and the toothed portion 10 are connected and / or welded together via the first snap-fit ​​component 40. That is, in this embodiment, the adapter ring 30 and the toothed portion 10 can be connected via the first snap-fit ​​component 40, or by welding, or they can be connected via the first snap-fit ​​component 40 first and then welded together. Connecting via the first snap-fit ​​component 40 improves the speed and convenience of the connection. Welding the adapter ring 30 and the toothed portion 10 improves the structural strength and operational stability of the entire core 100.

[0053] For example, the first latching component 40 includes a first latching protrusion 41 and a first latching groove 42 that are mutually adapted to each other. One of the first latching protrusion 41 and the first latching groove 42 is disposed on the outer peripheral surface of the adapter ring 30, and the other is disposed on the inner wall surface of the shaft hole 11. That is, when the first latching protrusion 41 is disposed on the outer peripheral surface of the adapter ring 30, the first latching groove 42 is disposed on the inner wall surface of the shaft hole 11; when the first latching protrusion 41 is disposed on the inner wall surface of the shaft hole 11, the first latching groove 42 is disposed on the outer peripheral surface of the adapter ring 30. Through the cooperating connection of the first latching protrusion 41 and the first latching groove 42, the toothed portion 10 and the adapter ring 30 can be quickly connected together.

[0054] Furthermore, in some embodiments, the first snap-fit ​​component 40 includes one or more. When there are multiple first snap-fit ​​components 40, such as two, three or four, the multiple first snap-fit ​​components 40 are evenly arranged at intervals along the outer periphery of the adapter ring 30, which can improve the connection stability between the adapter ring 30 and the toothed portion 10.

[0055] Optionally, the cross-section of the first slot 42 includes at least one of an arc shape, a dovetail shape, and a square shape. That is to say, in this embodiment, the cross-section of the first slot 42 can be an arc shape, a dovetail shape, or a square shape. When there are multiple first slots 42, the cross-section of the first slot 42 can be any combination of an arc shape, a dovetail shape, or a square shape, resulting in a simple structure and good connection stability. It is understood that the cross-section of the first slot 42 mentioned in this embodiment refers to the cross-section obtained by cutting the first slot 42 along the depth direction of the first slot 42, that is, the cross-section obtained by cutting the first slot 42 along the thickness direction perpendicular to the tooth portion 10.

[0056] Optionally, the adapter ring 30 and the yoke 20 are connected and / or welded together via the second snap-fit ​​component 50. That is, in this embodiment, the adapter ring 30 and the yoke 20 can be connected via the second snap-fit ​​component 50, or by welding, or they can be connected via the second snap-fit ​​component 50 first and then welded together. Connecting via the second snap-fit ​​component 50 improves the speed and convenience of the connection. Welding the adapter ring 30 and the yoke 20 improves the structural strength and operational stability of the entire core 100.

[0057] Furthermore, the second latching component 50 includes a second latching protrusion 51 and a second latching groove 52 that are mutually adapted to each other. One of the second latching protrusion 51 and the second latching groove 52 is disposed on the adapter ring 30, and the other is disposed on the yoke 20. That is, when the second latching protrusion 51 is disposed on the adapter ring 30, the second latching groove 52 is disposed on the yoke 20; when the second latching protrusion 51 is disposed on the yoke 20, the second latching groove 52 is disposed on the adapter ring 30. Through the cooperating connection of the second latching protrusion 51 and the second latching groove 52, the yoke 20 and the adapter ring 30 can be quickly connected together.

[0058] Furthermore, the second snap-fit ​​component 50 includes one or more. When there are multiple second snap-fit ​​components 50, such as two, three or four, the multiple second snap-fit ​​components 50 are evenly arranged at intervals along the outer periphery of the adapter ring 30, which can improve the connection stability between the adapter ring 30 and the yoke 20.

[0059] Optionally, the cross-section of the second slot 52 includes at least one of an arc shape, a dovetail shape, and a square shape. That is, in this embodiment, the cross-section of the second slot 52 can be an arc shape, a dovetail shape, or a square shape. When there are multiple second slots 52, the cross-section of the second slot 52 can be any combination of arc shape, dovetail shape, or square shape, resulting in a simple structure and good connection stability. It can be understood that in this embodiment, the cross-section of the second slot 52 refers to the cross-section obtained by cutting the second slot 52 along the depth direction of the second slot 52, that is, the cross-section obtained by cutting the second slot 52 along the thickness direction parallel to the yoke 20.

[0060] Combination Figures 1 to 7 As shown, in this embodiment, the yoke 20 is a ring structure, coaxially arranged with the adapter ring 30, and the inner diameter of the ring structure is larger than the inner diameter of the adapter ring 30. In some embodiments, the yoke 20 is made of soft magnetic composite material, and the adapter ring 30 is made of DT4C or No. 10 steel. The yoke 20 made of soft magnetic composite material has high axial compressive strength, but its bending / tensile strength is significantly lower than its compressive strength, making it brittle and prone to cracking under bending or impact loads. In this embodiment, the adapter ring 30 is made of DT4C or No. 10 steel, and the inner diameter of the adapter ring 30 is larger than the outer diameter of the yoke 20. Thus, in actual use, the core 100 is connected to the shaft structure through the adapter ring 30, while the yoke 20 and the shaft parts have a clearance fit. This ensures that the SMC yoke structure is not subjected to additional radial mechanical force during motor operation, thereby improving the service life of the core 100 in this embodiment.

[0061] Furthermore, in this embodiment, the inner wall surface of the adapter ring 30 is provided with a positioning protrusion 31 or a positioning groove (not shown in the figure). This application's Figure 7The diagram shows a case where the inner wall of the adapter ring 30 is provided with a positioning protrusion 31. Through the function of the positioning protrusion 31, it can be interference-fitted with the groove of the structure on the outer surface of the shaft part to limit the position of the shaft part.

[0062] Optionally, in this embodiment, the outer peripheral surface of the toothed portion 10 is provided with a wire-passing portion 14, which facilitates the passage of the three-phase wires of the motor. Exemplarily, the wire-passing portion 14 can be a wire-passing hole or a wire-passing groove. Figures 1 to 2 The image shows a wire guide section 14 that is a wire guide groove. This wire guide groove can be one, two, or three; this application shows a case where there are three wire guide grooves.

[0063] according to Figures 1 to 7 As shown, in some embodiments, the structural materials of both the toothed portion 10 and the yoke portion 20 are SMC. Since SMC has poor tensile strength but good compressive strength, the structure of the core 100 in this application should consider its ability to resist axial pressure. The transition ring 30 connects the toothed portion 10 and the yoke portion 20, and its material is preferably an isotropic material with high magnetic permeability and high electrical conductivity, such as DT4C or No. 10 steel. During the assembly of the core 100, the transition rings 30 made of DT4C or No. 10 steel are connected by a first snap-fit ​​component 40 to prevent axial slippage and radial loosening of the toothed portion 10. In some embodiments, there are multiple first snap-fit ​​components 40, evenly spaced along the circumference of the transition rings 30. During the assembly of the prototype, the three-phase coil wires can pass through the wire-passing portions 14, which are three in number, with the three structural features evenly distributed on the outer circumference of the toothed portion 10.

[0064] Because SMC material has poor tensile strength and is prone to deformation under high radial stress, the yoke 20 is fitted with a clearance fit to the central shaft during the assembly of the core 100 and the central shaft. This ensures that the SMC-made yoke 20 is not subjected to additional radial mechanical force during motor operation. During the assembly of the core 100, the transition ring 30 and the yoke 20 are connected by a second snap-fit ​​component 50. This not only prevents the yoke 20 and the transition ring 30 from circumferentially rotating and loosening, but also prevents circumferential slippage between them, ensuring the alignment of the wire-passing portions 14 of the multiple teeth 10. There are multiple second snap-fit ​​components 50, evenly distributed around the circumference of the transition ring 30. To ensure the compactness of the overall structure of the hybrid core, other auxiliary fastening structures (such as dovetail grooves) can be added to the DT4C or SMC connecting tooth yoke structure according to design requirements. Correspondingly, dovetail grooves are also added to the teeth 10 to cooperate with them, preventing radial slippage and loosening of the teeth 10.

[0065] In this application, the mechanical structure such as the first snap-fit ​​component 40 and the second snap-fit ​​component 50 serves to make the yoke 20 and the toothed part 10 mechanically connected to the DT4C or SMC connecting toothed yoke structure. Depending on the mechanical strength required by the design, laser welding or other methods can be used to further consolidate and strengthen the connection strength between the yoke 20 and the toothed part 10, thereby forming a compact hybrid iron core structure.

[0066] As can be seen from the above embodiments, the yoke 20 or toothed portion 10 of the iron core 100 of this application is made of SMC, while the transition ring 30 is made of DTC4 or No. 10 steel, which has the following advantages:

[0067] (1) The adapter ring 30, made of DTC4 or 10 steel, is an isotropic material with high magnetic permeability and high electrical conductivity, and the yoke 20 or tooth 10 made of SMC are mixed iron cores, which can meet the output requirements of high peak thrust of the motor system under high speed conditions.

[0068] (2) Compared with the existing core structure used in permanent magnet synchronous levitation motors, the hybrid core of the transition ring 30 made of DTC4 or No.10 steel with high magnetic permeability and high electrical conductivity and the yoke 20 or tooth 10 made of SMC can meet the output requirements of the motor system under high-speed conditions with high peak thrust, lower loss and improved efficiency.

[0069] (3) Compared with pure SMC iron core, the passive damping force is improved by combining the high magnetic permeability and high electrical conductivity of the transition ring 30 made of DTC4 or No.10 steel with the yoke 20 or tooth 10 made of SMC iron core.

[0070] (4) Compared with pure SMC iron core, the overall tensile strength of the iron core 100 of this application is improved by using an isotropic material with high magnetic permeability and high electrical conductivity, such as the transition ring 30 made of DTC4 or No. 10 steel, and the yoke 20 or tooth 10 made of SMC.

[0071] Secondly, see Figure 8 As shown in the figure, this application embodiment also provides a motor component 200, which includes a mover assembly or a stator assembly. Both the mover assembly and the stator assembly include multiple coaxially stacked iron cores 100 and windings (not shown in the figure). The iron cores 100 are as described above, and the windings are disposed in the winding mounting portion 12. Therefore, the motor component 200 in this embodiment includes all the technical effects of the iron cores 100 described above. Since the technical effects of the iron cores 100 have already been described above, they will not be repeated here.

[0072] Thirdly, this application also provides a levitation motor, which includes a motor component 200. This motor component 200 is the same as the motor component 200 described above, and therefore, the levitation motor includes all the technical effects of the motor component 200 described above. Since the technical effects of the motor component 200 have already been described above, they will not be repeated here. During the assembly process of the levitation motor, the individual iron cores 100 are fitted one by one onto the central shaft, and the upper surface of the yoke 20 of the iron core 100 contacts and aligns with the lower surface of the adapter ring 30 of another iron core 100.

[0073] Fourthly, this application also provides a suspension assembly, which includes the aforementioned suspension motor. Therefore, this suspension motor includes all the technical effects of the aforementioned suspension motor, which have already been described above and will not be repeated here.

[0074] Fifthly, see Figure 9 As shown, this application also provides a vehicle 300, which includes the aforementioned suspension motor; and / or, includes the aforementioned suspension assembly. Therefore, the vehicle 300 includes all the technical effects of the aforementioned suspension motor and / or suspension assembly. Since the technical effects of the suspension motor and / or suspension assembly have already been described above, they will not be repeated here.

[0075] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0076] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0077] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0078] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A core (100), characterized in that, include: The toothed portion (10) is provided with a shaft hole (11); The yoke (20) is independent of and coaxially connected to the tooth (10). The yoke (20) protrudes at least partially from the first side surface (13) of the tooth (10) to form a winding mounting part (12) with the first side surface (13). Wherein, at least one of the teeth (10) and the yoke (20) is an integrally formed body.

2. The iron core (100) according to claim 1, characterized in that, At least one of the teeth (10) and the yoke (20) is a soft magnetic composite material structure.

3. The iron core (100) according to claim 1, characterized in that, The iron core (100) also includes a transition ring (30), which is embedded in the shaft hole (11) and coaxially arranged with the shaft hole (11). Along the axial direction of the shaft hole (11), the yoke (20) is connected to the end face of the transition ring (30).

4. The iron core (100) according to claim 3, characterized in that, The adapter ring (30) includes a DT4C ring or a No. 10 steel ring.

5. The iron core (100) according to claim 3, characterized in that, The adapter ring (30) and the toothed portion (10) are connected and / or welded together via a first snap-fit ​​component (40); and / or, The adapter ring (30) and the yoke (20) are connected and / or welded together by a second snap-fit ​​component (50).

6. The iron core (100) according to claim 5, characterized in that, The first snap fastener (40) includes a first snap protrusion (41) and a first snap groove (42) that are adapted to each other. One of the first snap protrusion (41) and the first snap groove (42) is disposed on the outer peripheral surface of the adapter ring (30), and the other is disposed on the inner wall surface of the shaft hole (11).

7. The iron core (100) according to claim 5, characterized in that, The first snap-fit ​​component (40) includes one or more. When there are multiple first snap-fit ​​components (40), the multiple first snap-fit ​​components (40) are evenly arranged at intervals along the outer periphery of the adapter ring (30).

8. The iron core (100) according to claim 5, characterized in that, The second latching component (50) includes a second latching protrusion (51) and a second latching groove (52) that are adapted to each other. One of the second latching protrusion (51) and the second latching groove (52) is disposed on the adapter ring (30), and the other is disposed on the yoke (20).

9. The iron core (100) according to claim 5, characterized in that, The second snap-fit ​​component (50) includes one or more. When there are multiple second snap-fit ​​components (50), the multiple second snap-fit ​​components (50) are evenly arranged at intervals along the outer periphery of the adapter ring (30).

10. The iron core (100) according to any one of claims 3 to 9, characterized in that, The yoke (20) is a ring structure, which is coaxially arranged with the adapter ring (30), and the inner diameter of the ring structure is larger than the inner diameter of the adapter ring (30).

11. The iron core (100) according to any one of claims 3 to 9, characterized in that, The inner wall surface of the adapter ring (30) is provided with a positioning protrusion (31) or a positioning groove; and / or, The outer peripheral surface of the tooth (10) is provided with a through-line portion (14).

12. A motor component (200), characterized in that, The motor component (200) includes a stator assembly or a mover assembly, the stator assembly or the mover assembly including the iron core (100) according to any one of claims 1 to 11.

13. A levitation motor, characterized in that, The levitation motor includes the motor component (200) as described in claim 12.

14. A suspension assembly, characterized in that, The suspension assembly includes the suspension motor as described in claim 13.

15. A vehicle (300), characterized in that, The vehicle (300) includes the suspension motor of claim 13; and / or includes the suspension assembly of claim 14.

Images