A non-metallic axial flux disc rotor assembly with screw lock

Abstract

The application discloses a screw-locked nonmetallic axial magnetic flux disc rotor assembly, which comprises a nonmetallic magnetic flux disc, magnetic steels and magnetic steel locking bolts; a plurality of magnetic steel mounting positions are formed in the nonmetallic magnetic flux disc, each magnetic steel mounting position is provided with a magnetic steel, the outer side of each magnetic steel is provided with the magnetic steel locking bolt, each magnetic steel locking bolt is arranged along the circumference of the nonmetallic magnetic flux disc and reaches the cooperation position of the nonmetallic magnetic flux disc and the magnetic steel, and the bottom of the magnetic steel locking bolt abuts against the magnetic steel and tightly presses the magnetic steel to the inner ring of the nonmetallic magnetic flux disc. The application has the beneficial effects of improving the mechanical reliability of the rotor assembly, ensuring long-term stable operation of the motor, optimizing the operation condition and use experience of the motor, improving the transmission accuracy and output torque stability of the motor, being simple in structure, low in manufacturing cost and difficult to be damaged and the like.

Description

Technical Field

[0001] The present invention relates to a rotor assembly, and more particularly to a screw-locked nonmetallic axial flux disk rotor assembly. Background Technology

[0002] Axial flux disc motors are widely used in many fields such as new energy power, industrial drive, and aerospace due to their advantages such as high power density, large torque density, and compact structure. As the core transmission and magnetic circuit component, the rotor assembly's structural design and assembly method directly determine the motor's operating efficiency, mechanical reliability, and service life.

[0003] In existing technologies, the rotor assembly of axial flux disk motors mostly uses metal to fabricate the flux disk. While metal flux disks possess good mechanical strength, capable of resisting the magnetic attraction forces on the magnets during motor operation and meeting the structural support requirements of the foundation, metal materials have magnetic permeability. During motor operation, internal magnetic losses occur, not only consuming magnetic field energy and reducing magnetic energy utilization, but also converting these losses into heat, leading to increased motor temperature and consequently affecting the motor's operating efficiency and stability. This makes it difficult to meet the application requirements of high-power, high-efficiency motors. Furthermore, Traditional rotor assemblies often use a direct-mount structure where the magnets are directly embedded in the mounting position of the flux disk, sometimes only secured with adhesive, lacking effective mechanical locking constraints. When the motor operates at high speed, the magnets are subjected to strong magnetic attraction, making them highly susceptible to adhesive failure and magnet detachment. Detached magnets can collide with other internal motor components, damaging critical parts such as the motor core and windings, severely reducing the mechanical reliability of the rotor assembly, and even causing motor failure and shutdown. Furthermore, the direct-mount structure makes it difficult to ensure a tight fit between the magnets and the flux disk mounting position, easily leading to… This results in a larger distance between the magnet surface and the magnetic flux disk surface, increasing the air gap between the magnet and the motor core, exacerbating magnetic leakage in the magnetic circuit, and further reducing the motor's magnetic energy utilization efficiency and output performance. Furthermore, while some improved structures attempt to mechanically fix the magnet, they mostly use axial locking. This method is not only complex to assemble, but the locking structure also easily occupies the axial space of the motor, leading to an increase in the overall motor size. At the same time, axial locking cannot achieve circumferential positioning of the magnet, failing to effectively counteract the circumferential force generated by magnetic attraction, and the risk of magnet detachment remains unresolved. The problem is that this type of structure is not optimized for the connection stability between the magnetic flux disk and the motor shaft. During high-speed rotation, relative displacement between the magnetic flux disk and the motor shaft is likely to occur, affecting the transmission accuracy of the motor. In addition, traditional metal magnetic flux disks are prone to rust and corrosion, and their service life is significantly shortened under harsh working conditions such as humidity and dust. Moreover, the metal material is heavy, which increases the rotational inertia of the rotor, resulting in high energy consumption and loud operating noise during motor startup. At the same time, the metal material is difficult to process and shape, making it difficult to achieve precise fitting with irregularly shaped magnets. Assembly gaps can further aggravate the problem of magnetic leakage.

[0004] In summary, existing axial flux disk rotor assemblies suffer from numerous technical defects, such as high magnetic conduction loss, severe magnetic leakage, easy magnet detachment, low mechanical reliability, and limited motor efficiency. They can no longer meet the current demand for motors to develop towards higher efficiency, lighter weight, and higher reliability. Therefore, developing an axial flux disk rotor assembly with low loss, low magnetic leakage, firmly fixed magnets, and stable overall structure has become an urgent technical problem to be solved in this field. Summary of the Invention

[0005] To achieve the above objectives, the present invention provides a screw-locked non-metallic axial flux disk rotor assembly, comprising a non-metallic flux disk, a magnet, and a magnet locking bolt; The non-metallic magnetic flux disk has several magnet mounting positions, each of which is equipped with a magnet. Each magnet has a magnet locking bolt on its outer side. Each magnet locking bolt passes through the circumference of the non-metallic magnetic flux disk to the mating point between the non-metallic magnetic flux disk and the magnet, and the bottom of the magnet locking bolt abuts against the magnet and pushes it against the inner circle of the non-metallic magnetic flux disk.

[0006] Furthermore, there are twelve magnet mounting positions, and each magnet mounting position is arranged in a circular array around the center line of the non-metallic magnetic flux disk.

[0007] Furthermore, the cross-section of the magnet gradually decreases from the inside to the outside, forming a fan shape, and the magnet mounting position is adapted to the shape of the magnet, with the magnet embedded in the magnet mounting position.

[0008] Furthermore, each of the aforementioned magnet mounting positions has two bolt mounting holes on the outer side of the non-metallic flux disk, and each of the aforementioned bolt mounting holes is provided with a magnet locking bolt for clamping and positioning the magnet, with the bottom of each magnet locking bolt abutting against the outer side wall of the magnet; the magnet locking bolt is a stainless steel bolt or a PEEK bolt.

[0009] Furthermore, each of the four corners of the magnet mounting position is provided with an arc-shaped opening, and the four corners of the magnet are respectively located at each of the arc-shaped openings, but do not fit into each of the arc-shaped openings.

[0010] Furthermore, the bonding surface between the magnet and the non-metallic magnetic flux disk is coated with adhesive, and the magnet is bonded and fixed to the non-metallic magnetic flux disk by the adhesive; the adhesive is a high-temperature resistant epoxy structural adhesive.

[0011] Furthermore, each of the magnet mounting positions has several threaded grooves formed on the non-metallic magnetic flux disk, and each threaded groove is arranged around the magnet mounting position; this is used to increase the adhesive bonding area between the magnet and the non-metallic magnetic flux disk. Furthermore, it also includes a motor shaft, a flat key, a magnetic flux disc locking ring, and a magnetic flux disc locking bolt; The flat key is located at the mating surface between the motor shaft and the non-metallic magnetic flux disk. The magnetic flux disk locking ring is sleeved on the motor shaft and fits against the end face of the non-metallic magnetic flux disk. The magnetic flux disk locking bolt passes through the magnetic flux disk locking ring and fixes the motor shaft, the non-metallic magnetic flux disk and the magnetic flux disk locking ring together.

[0012] Furthermore, a flat keyway is provided on the motor shaft, the flat key is embedded in the flat keyway, and the outer side wall of the flat key abuts against the inner side wall of the non-metallic flux disk.

[0013] Furthermore, the magnetic flux disk locking ring is a ring structure, with its central hole matching the outer diameter of the motor shaft, and the magnetic flux disk locking bolts are evenly distributed along the circumference of the magnetic flux disk locking ring and pass through the magnetic flux disk locking ring.

[0014] The present invention has the following beneficial effects: 1. This invention uses a non-metallic material to prepare the magnetic flux disk. Since non-metallic materials have no magnetic permeability, they fundamentally eliminate the internal magnetic losses caused by the magnetic permeability of traditional metal magnetic flux disks, avoid the needless consumption of magnetic field energy, and reduce the heat converted from losses, effectively controlling the temperature rise of the motor and ensuring the energy utilization efficiency of the motor's magnetic circuit. Combined with the circumferential tightening structure of the magnet locking bolts, the magnets are tightly fitted to the magnet mounting positions, significantly shortening the distance from the surface of the magnet to the surface of the non-metallic magnetic flux disk, reducing the air gap between the magnet and the motor core, and significantly reducing magnetic leakage in the magnetic circuit. This dual optimization achieves a significant improvement in the magnetic energy utilization rate and operating efficiency of the motor.

[0015] 2. This invention replaces the traditional single fixing method of direct bonding of magnets, adopting a double fixing structure of adhesive and circumferential tightening of magnet locking bolts. The threaded groove increases the adhesive bonding area between the magnet and the non-metallic magnetic flux disk, improving the bonding strength. The magnet locking bolts pass through the circumference and tighten the magnet against the inner ring of the non-metallic magnetic flux disk, forming a circumferential mechanical constraint on the magnet. This effectively counteracts the magnetic attraction force on the magnet when the motor is running at high speed, completely solving the problem of magnet detachment from the structure. It avoids the magnet falling off and damaging the motor core, windings and other key components, significantly improving the mechanical reliability of the rotor assembly and ensuring long-term stable operation of the motor.

[0016] 3. The non-metallic flux disk in this invention has lightweight material characteristics, and when paired with optional PEEK material magnet locking bolts, it significantly reduces the overall weight of the rotor compared to traditional metal flux disk rotor assemblies. The reduction in rotor weight directly reduces the moment of inertia during high-speed rotation, which not only reduces the starting and running energy consumption of the motor, but also improves the speed response speed of the motor. At the same time, the lightweight structure effectively reduces vibration and impact during rotor rotation, significantly reduces motor operating noise, and optimizes the operating conditions and user experience of the motor.

[0017] 4. This invention achieves circumferential transmission positioning between the non-metallic magnetic flux disk and the motor shaft through a flat key. The flat key is embedded between the motor shaft keyway and the inner wall of the non-metallic magnetic flux disk, preventing relative circumferential displacement during rotation. Combined with the axial locking structure of the magnetic flux disk locking ring and locking bolt, the motor shaft, non-metallic magnetic flux disk, and magnetic flux disk locking ring are axially pressed and fixed, achieving dual circumferential and axial positioning and locking of the rotor assembly. This ensures the stability of the connection between components during high-speed rotation and improves the transmission accuracy and output torque stability of the motor.

[0018] 5. The magnet locking bolts are arranged along the circumferential side of the non-metallic flux disk, which does not occupy the axial space of the motor, ensuring the compactness of the overall structure of the motor. Moreover, the assembly method of bolt locking of each component is convenient to operate and easy to disassemble and assemble, reducing the difficulty of assembly and maintenance. At the same time, the non-metallic material has good processing plasticity and can be precisely fitted with the magnet through injection molding and other methods, further improving the assembly accuracy.

[0019] 6. Non-metallic flux disks possess insulating, corrosion-resistant, and rust-proof material properties. Paired with stainless steel or PEEK magnet locking bolts, they effectively solve the problems of rust and corrosion inherent in traditional metal flux disks. Even under harsh conditions such as humidity, dust, and corrosive environments, they can still ensure the structural integrity and performance stability of the rotor assembly. At the same time, the fixing structure of each component is robust and has a low wear rate, significantly reducing the probability of component failure, extending the service life of the rotor assembly and even the entire motor, and improving the overall cost-effectiveness of the product. It can be widely adapted to the motor application needs of various fields such as new energy power, industrial drive, and aerospace.

[0020] 7. The insulating properties of the non-metallic flux disk give the rotor assembly good electrical insulation, effectively preventing electrical faults such as leakage and short circuit during motor operation. Combined with the insulating properties of PEEK bolts, the safety of the motor is further improved. It is especially suitable for applications with high requirements for electrical insulation. At the same time, the invention also has the advantages of simple structure, low manufacturing cost and not easy to damage. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a specific embodiment of the present invention.

[0022] Figure 2 yes Figure 1 A magnified schematic diagram of the structure at point A in the middle.

[0023] Figure 3 This is another three-dimensional structural schematic diagram of the present invention.

[0024] Figure 4 yes Figure 3 A magnified schematic diagram of the structure at point B in the middle.

[0025] Figure 5 This is a top view of the structure of the present invention without magnets.

[0026] Figure 6 yes Figure 5 A schematic diagram of the three-dimensional structure.

[0027] Figure 7 yes Figure 6 A magnified schematic diagram of the structure at point C.

[0028] Figure 8 This is a three-dimensional structural diagram of the magnet in this invention.

[0029] Figure 9 This is a cross-sectional structural diagram of some components in this invention. Detailed Implementation

[0030] The present invention will be further described below with reference to the accompanying drawings and embodiments: In the description of this invention, it should be noted that the terms "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0031] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "setting," and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] like Figures 1 to 9 As shown, a screw-locked non-metallic axial flux disk rotor assembly includes a non-metallic flux disk 1, a magnet 2, and a magnet locking bolt 3; The non-metallic magnetic flux disk 1 has several magnet mounting positions 5, and each magnet mounting position 5 is provided with a magnet 2. Each magnet 2 is provided with a magnet locking bolt 3 on its outer side. Each magnet locking bolt 3 passes through the non-metallic magnetic flux disk 1 along the circumference to the mating point between the non-metallic magnetic flux disk 1 and the magnet 2, and the bottom of the magnet locking bolt 3 abuts against the magnet 2 and tightens it towards the inner circle of the non-metallic magnetic flux disk 1.

[0033] There are twelve magnet mounting positions 5, and each magnet mounting position 5 is arranged in a circular array around the center line of the non-metallic magnetic flux disk 1.

[0034] The cross-section of the magnet 2 gradually decreases from the inside to the outside, forming a fan shape. The magnet mounting position 5 is adapted to the shape of the magnet 2, and the magnet 2 is embedded in the magnet mounting position 5.

[0035] Each of the magnet mounting positions 5 has two bolt mounting holes 6 on the outer side of the non-metallic magnetic flux disk 1. Each of the bolt mounting holes 6 is provided with a magnet locking bolt 3 for clamping and positioning the magnet 2. The bottom of each magnet locking bolt 3 abuts against the outer side wall of the magnet 2. The magnet locking bolt 3 is a stainless steel bolt or a PEEK bolt.

[0036] The magnet mounting position 5 has arc-shaped openings 8 at each of its four corners. The four corners of the magnet 2 are located at each of the arc-shaped openings 8, but are not in contact with each of the arc-shaped openings 8.

[0037] The bonding surface between the magnet 2 and the non-metallic magnetic flux disk 1 is coated with adhesive, and the magnet 2 is bonded and fixed to the non-metallic magnetic flux disk 1 by the adhesive; the adhesive is a high-temperature resistant epoxy structural adhesive.

[0038] Each of the magnet mounting positions 5 has several threaded grooves 7 formed on the non-metallic magnetic flux disk 1, and each of the threaded grooves 7 is arranged around the magnet mounting position 5; to increase the adhesive bonding area between the magnet 2 and the non-metallic magnetic flux disk 1. It also includes a motor shaft 10, a flat key 11, a magnetic flux disk locking ring 12, and a magnetic flux disk locking bolt 13; The flat key 11 is located at the mating surface between the motor shaft 10 and the non-metallic magnetic flux disk 1. The magnetic flux disk locking ring 12 is sleeved on the motor shaft 10 and fits against the end face of the non-metallic magnetic flux disk 1. The magnetic flux disk locking bolt 13 passes through the magnetic flux disk locking ring 12 and fixes the motor shaft 10, the non-metallic magnetic flux disk 1 and the magnetic flux disk locking ring 12.

[0039] A flat keyway is provided on the motor shaft 10, and the flat key 11 is embedded in the flat keyway, with the outer side wall of the flat key 11 abutting against the inner side wall of the non-metallic magnetic flux disk 1.

[0040] The magnetic flux disk locking ring 12 has a ring structure, and its central hole is adapted to the outer diameter of the motor shaft 10. The magnetic flux disk locking bolts 13 are evenly distributed along the circumference of the magnetic flux disk locking ring 12 and pass through the magnetic flux disk locking ring 12.

[0041] Example 1 This embodiment is a basic application example of a screw-locked non-metallic axial flux disk rotor assembly. The core of the assembly consists of a non-metallic flux disk 1, magnets 2, magnet locking bolts 3, a motor shaft 10, a flat key 11, a flux disk locking ring 12, and flux disk locking bolts 13. The non-metallic flux disk 1 has twelve magnet mounting positions 5 arranged in a circular array. Each magnet mounting position 5 has two bolt mounting holes 6 on its outer side, and arc-shaped openings 8 around it. Multiple threaded grooves 7 are formed around the magnet mounting positions 5. The magnet locking bolts 3 are made of stainless steel. The cooperation of these components achieves low magnetic leakage and high stability operation of the rotor assembly. The specific operating principle is as follows: 1. Magnet pre-fixing operation Adhesive is evenly applied to the inner wall of the magnet mounting position 5 and the threaded groove 7 of the non-metallic magnetic flux disk 1. The magnet 2 with a fan-shaped cross-section is precisely embedded in the magnet mounting position 5, so that the four corners of the magnet 2 are positioned at the arc-shaped opening 8 but not touching the opening. The adhesive is used to achieve the initial bonding and pre-fixation between the magnet 2 and the non-metallic magnetic flux disk 1. The setting of the threaded groove 7 increases the adhesive bonding area and improves the fit and firmness of the pre-fixation.

[0042] 2. Magnet mechanical locking operation Screw the magnet locking bolt 3 into the bolt mounting hole 6 circumferentially around the non-metallic magnetic flux disk 1 until the bottom of the bolt abuts against the outer wall of the magnet 2. Continue to tighten the bolt 3 so that it pushes the magnet 2 towards the inner ring of the non-metallic magnetic flux disk 1, making the magnet 2 fit tightly against the inner wall of the magnet mounting position 5. After the adhesive has completely cured, the magnet 2 forms an integrated structure with the non-metallic magnetic flux disk 1 through a combination of adhesive bonding and mechanical tightening. This operation significantly shortens the distance between the surface of the magnet 2 and the surface of the non-metallic magnetic flux disk 1, reduces the air gap between the magnet 2 and the motor core, and reduces magnetic leakage. At the same time, the circumferential mechanical tightening constraint counteracts the magnetic attraction force on the magnet 2 when the motor is running, preventing the magnet 2 from falling off.

[0043] 3. Assembly operation of magnetic flux disk and motor shaft The flat key 11 is fitted into the pre-set flat keyway of the motor shaft 10, and then the non-metallic magnetic disk 1, after the magnet 2 is fixed, is axially fitted into the motor shaft 10, so that the outer side wall of the flat key 11 abuts against the inner side wall of the non-metallic magnetic disk 1. The flat key 11 realizes the circumferential transmission positioning of the non-metallic magnetic disk 1 and the motor shaft 10, and avoids circumferential relative displacement between the two during rotation.

[0044] 4. Overall locking operation of rotor assembly The annular magnetic flux disk locking ring 12 is fitted onto the motor shaft 10, so that the end face of the magnetic flux disk locking ring 12 is tightly fitted with the end face of the non-metallic magnetic flux disk 1. Then, the magnetic flux disk locking bolt 13 is evenly screwed into the magnetic flux disk locking ring 12 around the circumference and passes through the magnetic flux disk locking ring 12, thereby axially pressing and fixing the motor shaft 10, the non-metallic magnetic flux disk 1 and the magnetic flux disk locking ring 12, thus completing the overall assembly of the rotor assembly.

[0045] 5. Component Operation Principle When the motor shaft 10 rotates, the non-metallic magnetic flux disk 1 and the magnet 2 are driven to rotate synchronously through the circumferential transmission of the flat key 11. The non-metallic magnetic flux disk 1 is made of non-magnetic material, which avoids the internal magnetic conduction loss of the traditional metal magnetic flux disk and reduces magnetic field consumption and heat generation. The continuous tightening action of the magnet locking bolt 3 ensures that the magnet 2 is always in close contact with the non-metallic magnetic flux disk 1 under the action of high-speed rotation and magnetic attraction. The axial locking of the magnetic flux disk locking bolt 13 ensures the overall connection stability of each component of the rotor assembly, realizing the efficient and stable operation of the rotor assembly.

[0046] Example 2 This embodiment is an improved embodiment based on embodiment one, with material optimization and compatibility enhancements. The component part numbers are completely consistent with embodiment one. The only improvement is in the material of the magnet locking bolt 3, which is now made of PEEK bolt. The assembly torque is also adjusted to accommodate the lightweight characteristics of the non-metallic magnetic flux disk 1. The remaining structures, such as the twelve magnet mounting positions 5, the arc-shaped opening 8, and the threaded groove 7, are the same as in embodiment one. The specific operating principle is as follows: 1. Magnet pre-fixing operation Similar to Example 1, adhesive is applied to the magnet mounting position 5 and the threaded groove 7 of the non-metallic flux disk 1. The fan-shaped magnet 2 is then embedded in the magnet mounting position 5. The threaded groove 7 is used to increase the bonding area. The four corners of the magnet 2 correspond to the arc-shaped opening 8 but are not in contact with each other, thus completing the pre-fixation. The arc-shaped opening 8 provides a slight space for thermal expansion and contraction of the magnet 2 to avoid deformation and damage to the magnet 2 caused by high-speed operation and heat generation.

[0047] 2. Lightweight mechanical locking operation with magnets PEEK bolts are selected as the magnet locking bolts 3. PEEK bolts are lightweight, corrosion-resistant, and insulating, which are compatible with the material properties of the non-metallic flux disk 1, further reducing the overall weight of the rotor assembly. The PEEK bolts are screwed into the bolt mounting holes 6 circumferentially around the non-metallic flux disk 1, and the tightening torque is controlled to the appropriate value, so that the bottom of the bolt smoothly abuts against the outer wall of the magnet 2 and tightens against the inner ring of the non-metallic flux disk 1. This ensures that the magnet 2 and the magnet mounting position 5 are tightly fitted, reducing air gaps and magnetic leakage, while also preventing the non-metallic flux disk 1 from cracking or the magnet 2 from breaking due to excessive torque. After the adhesive cures, the magnet 2 and the non-metallic flux disk 1 form a lightweight and highly robust integrated structure. The circumferential mechanical constraint effectively counteracts the magnetic attraction force and prevents the magnet 2 from falling off during high-speed rotation.

[0048] 3. Precise assembly operation of magnetic flux disk and motor shaft The flat key 11 is tightly fitted into the flat keyway of the motor shaft 10. The non-metallic magnetic flux disk 1, which has been fixed with the magnet 2, is axially inserted into the motor shaft 10, so that the flat key 11 and the inner sidewall of the non-metallic magnetic flux disk 1 are precisely abutted, realizing circumferential transmission positioning. Due to the lightweight optimization of the PEEK bolts, the rotational inertia of the rotor assembly is further reduced, and the transmission efficiency of the flat key 11 is higher.

[0049] 4. Lightweight locking operation of the entire rotor assembly The magnetic flux disk locking ring 12 is fitted onto the motor shaft 10 and fits against the end face of the non-metallic magnetic flux disk 1. The magnetic flux disk locking bolt 13 is screwed in evenly around the magnetic flux disk locking ring 12 to match the torque value of the non-metallic magnetic flux disk 1 and the PEEK bolt, thus completing the axial locking and firmly fixing the motor shaft 10, the non-metallic magnetic flux disk 1, and the magnetic flux disk locking ring 12. The overall lightweight structure greatly reduces the rotational inertia of the rotor assembly, thereby reducing the energy consumption and noise of the motor operation.

[0050] 5. Component Optimization Operation Principle The motor shaft 10 drives the non-metallic magnetic flux disk 1 and the magnet 2 to rotate via the flat key 11. The non-magnetic characteristics of the non-metallic magnetic flux disk 1 eliminate internal magnetic losses. The lightweight combination of the PEEK bolt and the non-metallic magnetic flux disk 1 further reduces the rotor's rotational inertia, improving the motor's operating efficiency and response speed. The tightening effect of the magnet locking bolt 3 ensures the fit of the magnet 2 and effectively controls magnetic leakage. The axial locking of the magnetic flux disk locking bolt 13 ensures the overall stability of the assembly. At the same time, the corrosion resistance of the PEEK bolt improves the service life of the rotor assembly under harsh working conditions. The anti-corrosion and anti-rust properties of the non-metallic magnetic flux disk 1 and the PEEK bolt form a double protection, further optimizing the overall performance of the assembly.

[0051] In this invention, Example 2 is the preferred embodiment.

[0052] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A screw-locked non-metallic axial flux disk rotor assembly, characterized in that: Includes a non-metallic magnetic flux disk (1), a magnet (2), and a magnet locking bolt (3); The non-metallic magnetic flux disk (1) has several magnet mounting positions (5), each of which is equipped with a magnet (2). Each magnet (2) is provided with a magnet locking bolt (3) on its outer side. Each magnet locking bolt (3) passes through the non-metallic magnetic flux disk (1) circumferentially to the mating point between the non-metallic magnetic flux disk (1) and the magnet (2). The bottom of the magnet locking bolt (3) abuts against the magnet (2) and pushes it against the inner ring of the non-metallic magnetic flux disk (1).

2. The screw-locked non-metallic axial flux disk rotor assembly according to claim 1, characterized in that: The number of the magnet mounting positions (5) is twelve, and each magnet mounting position (5) is arranged in a circular array around the center line of the non-metallic magnetic flux disk (1).

3. The screw-locked non-metallic axial flux disk rotor assembly according to claim 2, characterized in that: The cross-section of the magnet (2) gradually decreases from the inside to the outside, forming a fan shape. The magnet mounting position (5) is adapted to the shape of the magnet (2), and the magnet (2) is embedded in the magnet mounting position (5).

4. The screw-locked non-metallic axial flux disk rotor assembly according to claim 3, characterized in that: Each of the magnet mounting positions (5) has two bolt mounting holes (6) on the non-metallic flux disk (1) on its outer side. Each of the bolt mounting holes (6) is provided with a magnet locking bolt (3) for clamping and positioning the magnet (2). The bottom of each magnet locking bolt (3) abuts against the outer wall of the magnet (2). The magnet locking bolt (3) is a stainless steel bolt or a PEEK bolt.

5. The screw-locked non-metallic axial flux disk rotor assembly according to claim 4, characterized in that: The four corners of the magnet mounting position (5) are provided with arc-shaped openings (8), and the four corners of the magnet (2) are located at each of the arc-shaped openings (8) and do not fit with each of the arc-shaped openings (8).

6. The screw-locked non-metallic axial flux disk rotor assembly according to claim 5, characterized in that: The bonding surface between the magnet (2) and the non-metallic magnetic flux disk (1) is coated with adhesive, and the magnet (2) is bonded and fixed to the non-metallic magnetic flux disk (1) by the adhesive. The adhesive is a high-temperature resistant epoxy structural adhesive.

7. The screw-locked non-metallic axial flux disk rotor assembly according to claim 6, characterized in that: Each of the magnet mounting positions (5) has several threaded grooves (7) formed on the non-metallic magnetic flux disk (1), and each of the threaded grooves (7) is arranged around the magnet mounting position (5) to increase the adhesive bonding area between the magnet (2) and the non-metallic magnetic flux disk (1).

8. The screw-locked non-metallic axial flux disk rotor assembly according to claim 7, characterized in that: It also includes a motor shaft (10), a flat key (11), a magnetic flux locking ring (12), and a magnetic flux locking bolt (13). The flat key (11) is located at the mating surface of the motor shaft (10) and the non-metallic magnetic flux disk (1). The magnetic flux disk locking ring (12) is sleeved on the motor shaft (10) and fits against the end face of the non-metallic magnetic flux disk (1). The magnetic flux disk locking bolt (13) passes through the magnetic flux disk locking ring (12) and fixes the motor shaft (10), the non-metallic magnetic flux disk (1) and the magnetic flux disk locking ring (12) in a fixed connection.

9. The screw-locked non-metallic axial flux disk rotor assembly according to claim 8, characterized in that: A flat keyway is provided on the motor shaft (10), and the flat key (11) is embedded in the flat keyway, and the outer side wall of the flat key (11) abuts against the inner side wall of the non-metallic flux disk (1).

10. The screw-locked non-metallic axial flux disk rotor assembly according to claim 9, characterized in that: The magnetic flux disk locking ring (12) is a ring structure, and its central hole is adapted to the outer diameter of the motor shaft (10). The magnetic flux disk locking bolts (13) are evenly distributed along the circumference of the magnetic flux disk locking ring (12) and pass through the magnetic flux disk locking ring (12).

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