Rotor disc of an axial field electric machine, method of manufacture and rotor assembly

Abstract

The application relates to an axial magnetic field motor, in particular to a rotor disc of an axial magnetic field motor, a manufacturing method and a rotor assembly. The rotor disc comprises a plug-in body, the plug-in body comprises a prefabricated support and a plurality of pre-magnetized magnetic steels, the pre-magnetized magnetic steels are plugged into the outer periphery of the prefabricated support, and the plurality of pre-magnetized magnetic steels are arranged in a circumferential interval; and a combination body is injection molded on the prefabricated support, the combination body and the prefabricated support jointly surround the pre-magnetized magnetic steels, and the axial two sides of the pre-magnetized magnetic steels are exposed outside, so that the assembly process is reduced, the magnetizing process difficulty is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] This invention relates to the field of axial magnetic field motors, and more particularly to a rotor disk, manufacturing method, and rotor assembly of an axial magnetic field motor. Background Technology

[0002] Axial field motors, also known as disc motors, have advantages such as small axial dimensions, high torque density, high power density, and high efficiency, and are widely used in electric vehicles, general industrial applications, and household appliances. When an axial field motor is running, the rotor is rotating and simultaneously subjected to gravity, bearing support force, centrifugal force, torque, and eccentric magnetic pull. Maintaining stable and vibration-free rotation requires close and consistent fit among all rotor components.

[0003] refer to Figure 1 Existing rotors generally include several magnets 1, a cage 2, and a retaining ring 3. The magnets 1 are integral structures and are magnetized, with their magnetic poles distributed axially. The magnets 1 are inserted into the cage 2, and the retaining ring 3 is fitted around the outer periphery of the cage 2 to limit and fix the magnets 1. However, it has the following drawbacks:

[0004] 1. The retainer 2 and the fixing ring 3 are made of prepreg, which is a sheet product made by impregnating the matrix with reinforcing fibers. The matrix material is mainly resin, which makes the material cost high. Moreover, the special shape of the retainer 2 makes the material utilization rate low, further increasing the cost.

[0005] 2. Both the retaining ring 3 and the retainer 2 require molding followed by machining. The retaining ring 3 is manufactured using winding molding, and the retainer 2 is manufactured using lamination molding. Lamination molding involves cutting the prepreg to the required size and shape of the product, stacking it into the required number of layers, and then placing it into a metal mold for forming. Winding molding involves winding the prepreg onto a mold core of a specific shape and then forming it in a metal mold. Stacking or winding the material before placing it into the mold consumes a significant amount of time, directly leading to low production efficiency. Furthermore, the manufacturing precision of molding is not high, requiring machining to adjust the dimensions, further reducing production efficiency and increasing production costs.

[0006] 3. To ensure a tight fit between the magnet 1, the retainer 2, and the fixing ring 3, all assembly contact surfaces must be coated with glue before assembly, resulting in low production efficiency, inability to automate, and high manual assembly costs.

[0007] 4. The existing technical route involves many assembly processes. In order to ensure assembly accuracy, the assembly dimensions of each component are required to be high, resulting in a low part qualification rate and high production management difficulty. Summary of the Invention

[0008] To address the aforementioned problems, this invention provides a rotor disk, manufacturing method, and assembly for an axial magnetic field motor that improves production efficiency and reduces material costs.

[0009] According to one object of the present invention, the present invention provides a rotor disk for an axial magnetic field motor, comprising:

[0010] The connector includes a prefabricated bracket and a plurality of pre-charged magnets, the pre-charged magnets being inserted into the outer periphery of the prefabricated bracket, and the plurality of pre-charged magnets being arranged at circumferential intervals.

[0011] The assembly is injection molded onto the prefabricated bracket, and the assembly and the prefabricated bracket together surround the pre-magnetized magnet.

[0012] In a preferred embodiment, the prefabricated support includes a ring and several rods. The rods are connected to the outer periphery of the ring, and the several rods are arranged at circumferential intervals. A pre-charged magnet is inserted between each of two adjacent rods.

[0013] In a preferred embodiment, magnet limiting portions are provided on both sides of the pre-magnetized magnet and rod limiting portions are provided on both sides of the rod. The rod limiting portions and magnet limiting portions are adapted to fix the pre-magnetized magnet axially.

[0014] In a preferred embodiment, the prefabricated bracket has a plurality of filling holes, and the assembly is filled into the filling holes.

[0015] In a preferred embodiment, the rod body has a plurality of filling holes, and the diameter of the filling holes gradually increases radially from the inside to the outside.

[0016] In a preferred embodiment, the axial dimension of the pre-magnetized magnet is larger than the axial dimension of the prefabricated bracket, and the prefabricated bracket is held at the middle position in the axial direction of the pre-magnetized magnet, so as to form a space for injection molding the assembly on both sides of the axial direction of the prefabricated bracket and on the outer periphery of the plug body.

[0017] In a preferred embodiment, the axial sides of the pre-magnetized magnet are exposed outside the assembly;

[0018] Alternatively, the pre-charged magnet is completely enclosed by the composite.

[0019] In a preferred embodiment, the assembly includes an axial joint, an outer ring joint, and a filling joint. The axial joints are connected to both axial sides of the prefabricated bracket. The shape of the axial joints is adapted to the shape of the prefabricated bracket, and the axial joints are formed between each of the pre-filled magnets. Each filling hole is filled with the filling joint. The outer ring joint is connected to the outer periphery of the prefabricated bracket. The outer ring joint is annular and wraps around the radial outer side of the pre-filled magnet. The outer ring joint, the filling joint, and the axial joints located on both axial sides of the prefabricated bracket are integrally formed.

[0020] According to one objective of the present invention, the present invention also provides a method for manufacturing an axial magnetic field motor rotor disk, comprising the following steps:

[0021] a. Provide a connector, the connector including a prefabricated bracket and a plurality of pre-charged magnets, the pre-charged magnets being inserted into the outer periphery of the prefabricated bracket, and the plurality of pre-charged magnets being arranged at circumferential intervals;

[0022] b. A coupling body is formed on the plug body to surround the pre-magnetized magnet together with the plug body, so as to obtain a rotor disk, wherein the axial sides of the pre-magnetized magnet are exposed outside the coupling body.

[0023] In a preferred embodiment, step a includes:

[0024] a1. The prefabricated bracket is obtained by injection molding or compression molding;

[0025] a2. Insert several of the pre-magnetized magnets into the outer periphery of the prefabricated bracket to obtain the insertion body.

[0026] In a preferred embodiment, step b includes:

[0027] The connector is placed in an injection mold made of non-magnetic material to form a composite body by injection molding.

[0028] According to another objective of the present invention, the present invention also provides an axial magnetic field motor rotor assembly, including the rotor disk of the above embodiment. The axial magnetic field motor rotor assembly further includes a rotor shaft, bolts and a washer, the rotor disk being sleeved on the rotor shaft and fixed by the bolts and the washer.

[0029] Compared with existing technologies, this technical solution has the following advantages:

[0030] Both the prefabricated support and the assembly can be injection molded, meaning the rotor disk is produced using injection molds. This ensures good consistency among the components of the rotor disk, improving product qualification rate. It reduces assembly steps, simplifies the process, and increases production efficiency, enabling automated production.

[0031] The assembly completely fills the filling holes on the rod body, as well as the gaps between the pre-magnetized magnet and the prefabricated bracket, ensuring that the pre-magnetized magnet is tightly wrapped around itself and will not loosen. Therefore, it can appropriately prevent the assembly dimensional accuracy requirements between the pre-magnetized magnet and the prefabricated bracket from being loosened.

[0032] The pre-charged magnet can be completely encased in plastic material and not exposed to air, so rust prevention treatment is not even necessary when producing the pre-charged magnet.

[0033] Using plastic to make the rotor discs satisfies the strength requirements while significantly reducing material costs.

[0034] The present invention will be further described below with reference to the accompanying drawings and embodiments. Attached Figure Description

[0035] Figure 1 This is a schematic diagram of the existing rotor structure;

[0036] Figure 2 This is a front view of the rotor disk described in this invention;

[0037] Figure 3 This is a rear view of the rotor disk described in this invention;

[0038] Figure 4 This is a schematic diagram of the structure of the connector described in this invention;

[0039] Figure 5 This is a perspective view of the prefabricated support structure described in this invention;

[0040] Figure 6 This is a front view of the prefabricated support structure described in this invention;

[0041] Figure 7 for Figure 6 Sectional view along the BB direction;

[0042] Figure 8 This is a schematic diagram of the structure of the pre-magnetized magnet described in this invention;

[0043] Figure 9 This is a schematic diagram of the assembly of the pre-magnetized magnet and the prefabricated bracket according to the present invention;

[0044] Figure 10 This is a schematic diagram of the rotor assembly described in this invention;

[0045] Figure 11 This is an exploded view of the rotor assembly described in this invention.

[0046] In the diagram: 1 Magnet, 2 Cage, 3 Fixing Ring, 100 Plug-in Body, 110 Prefabricated Bracket, 111 Ring Body, 112 Rod Body, 112a Rod Body Limiting Part, 113 Filling Hole, 120 Pre-charged Magnet, 120a Magnet Limiting Part, 200 Connecting Body, 201 Limiting Hole, 210 Axial Connecting Part, 211 Ring Body Connecting Part, 212 Rod Body Connecting Part, 220 Outer Ring Connecting Part, 1000 Rotor Disc, 1001 Mounting Hole, 1002 Center Hole, 2000 Rotor Shaft, 2001 Shaft Body, 2002 Stepped Plate, 2003 Threaded Hole, 4000 Bolt, 3000 Washer Plate, 3001 Washer Plate Through Hole. Detailed Implementation

[0047] The following description is intended to disclose the present invention and enable those skilled in the art to implement it. The preferred embodiments described below are merely examples, and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description can be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions that do not depart from the spirit and scope of the invention.

[0048] First Embodiment

[0049] like Figures 2 to 9 As shown, the method for manufacturing the rotor disk of the axial magnetic field motor includes the following steps:

[0050] a. Provide a plug body 100, the plug body 100 includes a prefabricated bracket 110 and a plurality of pre-magnetized magnets 120, the pre-magnetized magnets 120 are plugged into the outer periphery of the prefabricated bracket 110, and the plurality of pre-magnetized magnets 120 are arranged in a circular interval.

[0051] b. A coupling body 200 is formed on the insertion body 100 to surround the pre-magnetized magnet 120 together with the insertion body 100, so as to obtain a rotor disk 1000, wherein the axial sides of the pre-magnetized magnet 120 are exposed outside the coupling body 200.

[0052] Both the prefabricated bracket 110 and the coupling 200 can be injection molded, meaning the rotor disk is produced using an injection mold. This ensures good consistency among the components of the rotor disk, improving product qualification rate. Simultaneously, the prefabricated bracket 110 and the coupling 200 simultaneously limit and fix the pre-magnetized magnet 120, ensuring it doesn't loosen. This also avoids increasing material costs associated with prepreg molding and improves production efficiency. Furthermore, the prefabricated bracket 110 and the coupling 200 can also be formed by prepreg molding or short-fiber resin molding. The prefabricated bracket 110 provides circumferential and axial limiting of the pre-magnetized magnet 120. Compared to the prior art where the fixing ring only provides radial limiting, the coupling 200 provides axial, axial, and radial limiting of the pre-magnetized magnet 120, effectively improving bonding strength and structural stability.

[0053] Step a includes:

[0054] a1. The prefabricated bracket 110 is obtained by injection molding or compression molding;

[0055] a2. Insert several of the pre-magnetized magnets 120 into the outer periphery of the prefabricated bracket 110 to obtain the insertion body 100.

[0056] The prefabricated bracket 110 can be injection molded from ordinary engineering plastics. Compared with the existing cages made of prepreg, it reduces material costs and avoids the problem of low material utilization. It also eliminates the steps of first molding and then machining, thereby improving production efficiency.

[0057] like Figure 5 and Figure 6 As shown, the prefabricated support 110 includes a ring 111 and several rods 112. The rods 112 are connected to the outer periphery of the ring 111, and the several rods 112 are arranged in a circular interval. A pre-charged magnet 120 is inserted between two adjacent rods 112.

[0058] Specifically, the ring 111 and the rod 112 are integrally formed. The width of the rod 112 gradually increases radially from the inside to the outside, so that the trapezoidal pre-charged magnet 120 can be fitted and installed between two adjacent rods 112. See [link to relevant documentation]. Figure 8 and Figure 9The pre-charged magnet 120 is made of permanent magnet material and is trapezoidal. When the pre-charged magnet 120 is inserted between two adjacent rods 112, the width of the pre-charged magnet 120 gradually increases radially from the inside to the outside, and the radial inner side of the pre-charged magnet 120 abuts against the outer periphery of the ring 111. The circumferential sides of the pre-charged magnet 120 abut against the rods 112 on both sides respectively.

[0059] refer to Figures 7 to 9 The pre-charged magnet 120 is provided with magnet limiting parts 120a on both sides of its circumference, and the rod body 112 is provided with rod limiting parts 112a on both sides of its circumference. The rod limiting parts 112a and the magnet limiting parts 120a are adapted to fix the pre-charged magnet 120 axially.

[0060] The magnet limiting part 120a can be a concave portion, and the rod limiting part 112a can be a convex portion. Then, in step a2, by utilizing the cooperation of the magnet limiting part 120a and the rod limiting part 112a, the pre-magnetized magnet 120 is inserted radially from the outside to the inside between two adjacent rods 112, thereby axially limiting the pre-magnetized magnet 120 and obtaining the desired result. Figure 4 The connector 100 shown.

[0061] The magnet limiting part 120a penetrates the pre-charged magnet 120 radially and is located at the middle position in the axial direction of the pre-charged magnet 120. The rod limiting part 112a is also located at the middle position of the rod 112, so that the plug body 100 is kept at the middle position in the axial direction of the pre-charged magnet 120, so that the two sides of the plug body 100 are symmetrical in the axial direction, thereby making the rotor disk produced uniform.

[0062] The cross-sections of the rod limiting part 112a and the magnet limiting part 120a may be semi-circular, but are not limited to this.

[0063] like Figure 5 and Figure 6 As shown, the prefabricated bracket 110 has a plurality of filling holes 113, and the connector 200 fills the filling holes 113 to increase the bonding ability of the prefabricated bracket 110 and the connector 200.

[0064] The ring 111 and / or the rod 112 are provided with filling holes 113. Taking the rod 112 as an example, each rod 112 is provided with a number of filling holes 113, and the diameter of the filling holes 113 gradually increases from the inside to the outside in the radial direction.

[0065] Step b includes:

[0066] The connector 100 is placed in an injection mold made of a non-magnetic material to form a composite 200 by injection molding on the connector 100.

[0067] The pre-magnetized magnet 120 on the connector 100 has been magnetized. Therefore, the injection mold made of non-magnetic material is used to complete the injection molding of the connector 200, so as to avoid the pre-magnetized magnet 120 being directly adsorbed in the injection mold and thus unable to complete the injection molding and unloading.

[0068] Furthermore, the connector 100 is provided with a positioning hole, and the injection mold includes a positioning structure adapted to the positioning hole, such as a positioning post, to ensure that the connector 100 can be stably positioned within the injection mold, thereby ensuring product consistency. After the injection mold is detached and the rotor disk 1000 is removed, a limiting hole 201 is formed on the surface of the assembly 200 of the rotor disk 1000, as shown in the reference. Figure 3 The limiting hole 201 is left because the positioning structure has been removed, and then glue or other fillers can be filled into the limiting hole 201.

[0069] like Figure 2 and Figure 4 As shown, the axial dimension of the pre-magnetized magnet 120 is larger than the axial dimension of the prefabricated bracket 110, and the prefabricated bracket 110 is held in the middle position in the axial direction of the pre-magnetized magnet 120, so as to form a space for injection molding the assembly 200 on both sides of the axial direction of the prefabricated bracket 110 and on the outer periphery of the plug body 100.

[0070] The assembly 200 fills the space between two adjacent pre-magnetized magnets 120 and the outer periphery of the pre-magnetized magnets 120. That is, the assembly 200 completely fills the filling holes 113 on the rod 112, as well as the gaps between the pre-magnetized magnets 120 and the prefabricated support 110, to achieve the desired result. Figure 2 The rotor disk shown ensures that the pre-magnetized magnet 120 is tightly wrapped around itself and will not loosen, thus appropriately preventing the assembly dimensional accuracy requirements between the pre-magnetized magnet 120 and the prefabricated bracket 110 from being relaxed. Furthermore, the pre-magnetized magnet 120 can be completely encased in plastic material and not exposed to air, therefore, rust prevention treatment may not be necessary during the production of the pre-magnetized magnet 120.

[0071] It should be noted that in the plug body 100, the outer periphery of the pre-magnetized magnet 120 is not limited. The outer periphery of the pre-magnetized magnet 120 is covered by the connector 200 so that the connector 200 and the prefabricated bracket 110 together limit the pre-magnetized magnet 120.

[0072] The assembly 200 can radially and circumferentially limit the pre-magnetized magnet 120. Compared with the existing technology that uses a fixing ring for fixation, this eliminates the step of assembling the fixing ring, effectively improving production efficiency. Moreover, the assembly 200 is also made of plastic material, which greatly reduces material costs, eliminates the step of first molding and then machining, and still meets strength requirements.

[0073] refer to Figure 2 The radial dimension of the rotor disk 1000 is much larger than the axial dimension of the rotor disk 1000, and the axial sides of the pre-charged magnet 120 are exposed. Of course, the pre-charged magnet 120 can be completely enclosed by the assembly 200.

[0074] Because of the reduction in assembly steps, the assembly and transfer processes of the prefabricated bracket 110, the connector 200, and the plug-in body 100 can all be completed by robotic arms, thereby achieving automated production.

[0075] In summary, both the prefabricated bracket 110 and the assembly 200 are injection molded, meaning the rotor disk is produced using injection molds. This ensures good consistency among the components of the rotor disk, improving product qualification rate. Simultaneously, the prefabricated bracket 110 and the assembly 200 simultaneously limit and fix the pre-magnetized magnet 120, ensuring it is tightly enclosed and does not loosen. This significantly reduces material costs while meeting strength requirements. Furthermore, it reduces assembly steps, simplifies the process, and increases production efficiency, enabling automated production.

[0076] Second Embodiment

[0077] like Figures 2 to 9 As shown, the rotor disk 1000 of the axial magnetic field motor includes:

[0078] The plug body 100 includes a prefabricated bracket 110 and a plurality of pre-magnetized magnets 120. The pre-magnetized magnets 120 are plugged into the outer periphery of the prefabricated bracket 110, and the plurality of pre-magnetized magnets 120 are arranged in a circumferentially spaced manner.

[0079] The assembly 200 is injection molded onto the prefabricated bracket 110. The assembly 200 and the prefabricated bracket 110 together surround the pre-magnetized magnet 120, and the axial sides of the pre-magnetized magnet 120 are exposed.

[0080] The rotor disk 1000 of the axial magnetic field motor can be manufactured by the manufacturing method of the rotor disk of the axial magnetic field motor. The beneficial effects of the rotor disk 1000 can be referred to the manufacturing method of the rotor disk of the axial magnetic field motor, that is, the rotor disk is made of ordinary engineering plastics, which can meet the strength requirements, greatly reduce the material cost, and realize automation, etc.

[0081] like Figures 5 to 9 As shown, the prefabricated support 110 includes a ring 111 and several rods 112. The rods 112 are connected to the outer periphery of the ring 111, and the several rods 112 are arranged at circumferential intervals. A pre-magnetized magnet 120 is inserted between each two adjacent rods 112. Magnet limiting portions 120a are respectively provided on both circumferential sides of the pre-magnetized magnet 120, and rod limiting portions 112a are respectively provided on both circumferential sides of the rods 112. The rod limiting portions 112a and the magnet limiting portions 120a are adapted to axially fix the pre-magnetized magnet 120.

[0082] like Figure 5 and Figure 6 As shown, the prefabricated bracket 110 has a plurality of filling holes 113, and the connector 200 fills the filling holes 113 to increase the bonding ability of the prefabricated bracket 110 and the connector 200.

[0083] The ring 111 and / or the rod 112 are provided with filling holes 113. Taking the rod 112 as an example, each rod 112 is provided with a number of filling holes 113, and the diameter of the filling holes 113 gradually increases from the inside to the outside in the radial direction.

[0084] like Figure 2 and Figure 4 As shown, the axial dimension of the pre-magnetized magnet 120 is larger than the axial dimension of the prefabricated bracket 110, and the prefabricated bracket 110 is held in the middle position in the axial direction of the pre-magnetized magnet 120, so as to form a space for injection molding the assembly 200 on both sides of the axial direction of the prefabricated bracket 110 and on the outer periphery of the plug body 100.

[0085] The assembly 200 completely fills the filling holes 113 on the rod 112, as well as the gaps between the pre-magnetized magnet 120 and the prefabricated bracket 110, to achieve the desired result. Figure 2 The rotor disk shown ensures that the pre-magnetized magnet 120 is tightly wrapped around itself and will not loosen.

[0086] refer to Figure 2The assembly 200 is approximately flush with the two axial sides of the pre-charged magnet 120 to produce the rotor disk 1000 with a smaller axial dimension.

[0087] like Figure 3 and Figure 4 As shown, the assembly 200 includes an axial joint portion 210, an outer ring joint portion 220, and a filling joint portion. The axial joint portion 210 is injection molded on both axial sides of the prefabricated bracket 110. The shape of the axial joint portion 210 is adapted to the shape of the prefabricated bracket 110, and the axial joint portion 210 is formed between each of the pre-charged magnets 120. The filling joint portion is injection molded in each filling hole 113, and the filling joint portion connects the axial joint portions 210 located on both axial sides of the prefabricated bracket 110. The outer ring joint portion 220 is injection molded on the outer periphery of the prefabricated bracket 110. The outer ring joint portion 220 is annular and wraps around the radial outer side of the pre-charged magnet 120. The outer ring joint portion 220, the filling joint portion, and the axial joint portions 210 located on both axial sides of the prefabricated bracket 110 are integrally injection molded.

[0088] The axial joint 210 includes a ring-shaped joint 211 and a plurality of rod-shaped joints 212, for reference. Figures 3 to 6 The ring-body joint 211 is injection-molded onto the axial surface of the ring 111, and the two are shaped to match. The rod-body joint 212 is injection-molded onto the axial surface of the rod 112, and the two are shaped to match. The rod 112 has several filling holes 113. Therefore, the filling joints injection-molded into the filling holes 113 connect the rod-body joints 212 located on both axial sides of the rod 112. (Continue to refer to...) Figure 3 The sum of the thicknesses of the two axial joints 210 and the prefabricated bracket 110 is approximately equal to the thickness (axial dimension) of the pre-magnetized magnet 120, so that the axial sides of the pre-magnetized magnet 120 are exposed to the surface of the joint 200.

[0089] refer to Figure 3 and Figure 4 When the pre-charged magnet 120 is assembled on the prefabricated bracket 110, the radial outer side of the pre-charged magnet 120 is approximately aligned with the outer periphery of the prefabricated bracket 110. The outer ring joint 220 is injection molded along the outer periphery of the prefabricated bracket 110, that is, the outer ring joint 220 is annular and is simultaneously injection molded on the radial outer side of the pre-charged magnet 120. The outer ring joint 220 and the axial joint 210 located on both axial sides of the prefabricated bracket 110 are integrally connected so that the joint 200 and the prefabricated bracket 110 together fix the pre-charged magnet 120.

[0090] The axial joint portion 210 is away from the outer surface of the prefabricated bracket 110 and is flush with the axial side surface of the outer ring joint portion 220. That is, the sum of the thicknesses of the two axial joint portions 210 and the prefabricated bracket 110 is equal to the thickness of the outer ring joint portion 220, thereby obtaining a result as shown in the figure. Figure 3 The rotor disk is shown. The width of the outer ring joint 220 is small, sufficient to radially limit the pre-magnetized magnets 120. It can be seen that the prefabricated bracket 110 is completely enclosed by the connector 200, and the connector 200 fills around each of the pre-magnetized magnets 120, so that the connector 200 and the prefabricated bracket 110 together fix the pre-magnetized magnets 120, ensuring fixing strength while improving assembly efficiency.

[0091] Third Embodiment

[0092] like Figure 10 and Figure 11 As shown, the axial magnetic field motor rotor assembly includes the rotor disk 1000 of the above embodiment. The axial magnetic field motor rotor assembly also includes a rotor shaft 2000, bolts 4000 and pads 3000. The rotor disk 1000 is sleeved on the rotor shaft 2000 and fixed by the bolts 4000 and the pads 3000.

[0093] like Figure 10 As shown, the rotor disk 1000 has a central hole 1002 located at the center of the rotor disk 1000. The rotor shaft 2000 includes a shaft body 2001 and a stepped plate 2002 connected to the shaft body 2001. During assembly, the shaft body 2001 passes through the central hole 1002 of the rotor disk 1000, and the stepped plate 2002 and the pad 3000 are clamped on both axial sides of the rotor disk 1000. Then, the stepped plate 2002, the rotor disk 1000, and the pad 3000 are connected by bolts 4000 to complete the assembly of the rotor assembly. (Refer to...) Figure 10 and Figure 11 .

[0094] Continue to refer to Figure 10 The rotor disk 1000 is also provided with a plurality of mounting holes 1001, which surround the central hole 1002. The mounting holes 1001 are used for the bolts 4000 to pass through. Similarly, the pad 3000 is provided with a pad through hole 3001 for the bolts 4000 to pass through. The stepped plate 2002 is provided with a threaded hole 2003 for the bolts 4000 to be screwed in.

[0095] The embodiments described above are only used to illustrate the technical ideas and features of the present invention. Their purpose is to enable those skilled in the art to understand the content of the present invention and implement it accordingly. The scope of patent application of the present invention should not be limited by these embodiments. That is, any equivalent changes or modifications made in accordance with the spirit disclosed in the present invention still fall within the patent scope of the present invention.

Claims

1. A rotor disk (1000) for an axial magnetic field motor, characterized in that, include: The plug-in body (100) includes a prefabricated bracket (110) and a plurality of pre-magnetized magnets (120), the pre-magnetized magnets (120) being plugged into the outer periphery of the prefabricated bracket (110), and the plurality of pre-magnetized magnets (120) being arranged at circumferential intervals. A connector (200) is connected to the prefabricated support (110), the connector (200) and the prefabricated support (110) together surround the pre-magnetized magnet (120), and the axial sides of the pre-magnetized magnet (120) are exposed. The prefabricated support (110) has several filling holes (113) on its rod (112), and the diameter of the filling holes (113) gradually increases radially from the inside to the outside, and the composite (200) fills the filling holes (113).

2. The rotor disk (1000) of the axial magnetic field motor as described in claim 1, characterized in that, The prefabricated support (110) includes a ring (111) and a plurality of rods (112). The rods (112) are connected to the outer periphery of the ring (111), and the plurality of rods (112) are arranged in a circumferentially spaced manner. A pre-charged magnet (120) is inserted between two adjacent rods (112).

3. The rotor disk (1000) of the axial magnetic field motor as described in claim 2, characterized in that, The pre-charged magnet (120) is provided with magnet limiting parts (120a) on both sides of its circumference, and the rod body (112) is provided with rod limiting parts (112a) on both sides of its circumference. The rod limiting parts (112a) and the magnet limiting parts (120a) are adapted to fix the pre-charged magnet (120) axially.

4. The rotor disk (1000) of the axial magnetic field motor as described in claim 1, characterized in that, The axial dimension of the pre-magnetized magnet (120) is greater than the axial dimension of the prefabricated bracket (110), and the prefabricated bracket (110) is held in the middle position of the axial direction of the pre-magnetized magnet (120) to form a space for connecting the connector (200) on both sides of the axial direction of the prefabricated bracket (110) and on the outer periphery of the plug body (100).

5. The rotor disk (1000) of the axial magnetic field motor as described in claim 1, characterized in that, The assembly (200) includes an axial connection portion (210), an outer ring connection portion (220), and a filling connection portion. The axial connection portion (210) is connected to both axial sides of the prefabricated bracket (110). The shape of the axial connection portion (210) is adapted to the shape of the prefabricated bracket (110). The axial connection portion (210) is formed between each of the pre-charged magnets (120). The filling connection portion is filled into each filling hole (113). The outer ring connection portion (220) is connected to the outer periphery of the prefabricated bracket (110). The outer ring connection portion (220) is annular and wraps around the radial outer side of the pre-charged magnet (120). The outer ring connection portion (220), the filling connection portion, and the axial connection portion (210) located on both axial sides of the prefabricated bracket (110) are integrally formed.

6. A method for manufacturing a rotor disk of an axial magnetic field motor, characterized in that, Includes the following steps: a. Provide a plug body (100), the plug body (100) includes a prefabricated bracket (110) and a plurality of pre-magnetized magnets (120), the pre-magnetized magnets (120) are plugged into the outer periphery of the prefabricated bracket (110), and the plurality of pre-magnetized magnets (120) are arranged in a circumferentially spaced manner; b. A coupling (200) is formed on the plug body (100) to surround the pre-magnetized magnet (120) together with the plug body (100) to obtain a rotor disk (1000), wherein the axial sides of the pre-magnetized magnet (120) are exposed outside the coupling (200); The prefabricated support (110) has a plurality of filling holes (113) on its rod (112), and the diameter of the filling holes (113) gradually increases radially from the inside to the outside. Step b includes: The connector (100) is placed in an injection mold made of non-magnetic material to form a composite (200) by injection molding on the connector (100), the composite (200) filling the filling hole (113).

7. The method for manufacturing the rotor disk of an axial magnetic field motor as described in claim 6, characterized in that, Step a includes: a1. The prefabricated bracket (110) is obtained by injection molding or compression molding. a2. Insert several of the pre-magnetized magnets (120) into the outer periphery of the prefabricated bracket (110) to obtain the insertion body (100).

8. An axial magnetic field motor rotor assembly, characterized in that, Including the rotor disk (1000) as described in any one of claims 1 to 5, the axial magnetic field motor rotor assembly further includes a rotor shaft (2000), bolts (4000) and a pad (3000), the rotor disk (1000) being sleeved on the rotor shaft (2000) and fixed by the bolts (4000) and the pad (3000).

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