Rotor and disc type motor

Abstract

The rotor comprises a rotor support, a magnetic conductive block, a permanent magnet and a check ring, the magnetic conductive block and the rotor support are integrally formed in a punching and rolling mode, spokes are arranged on the two sides of the magnetic conductive block, a magnetic conductive back yoke is arranged between every two adjacent spokes, and the magnetic conductive back yokes and the two adjacent spokes form a groove used for installing the permanent magnet. The check rings are connected with the ends, away from the inner ring, of the spokes and used for providing radial acting force for the permanent magnets. According to the scheme, the first limiting parts are arranged in the grooves, the second limiting parts are arranged on the permanent magnets, radial limiting is provided for the permanent magnets through cooperation of the first limiting parts and the second limiting parts, radial constraint is provided for multiple positions, in the radial direction of the inner ring, of the permanent magnets, and the radial constraint force provided by the check ring for the permanent magnets is reduced; therefore, the disc type motor with the rotor bracket meets the high-speed development trend.

Description

Technical Field

[0001] The present application relates to the technical field of motors, and in particular to a rotor and a disc motor. Background Art

[0002] Disc motors have the advantages of small axial size, high torque density, high power density and high efficiency, and are widely used in electric vehicles, general industry and household appliances.

[0003] In the related art, the rotor of the disc motor includes a rotor bracket, a retaining ring, multiple permanent magnets and multiple magnetic blocks. The rotor bracket is provided with an installation groove, and permanent magnets or magnetic blocks are installed in the installation groove. The permanent magnets and magnetic blocks are arranged at intervals. The retaining ring is sleeved on the outer circumference of the rotor bracket, and the retaining ring radially limits the permanent magnets and magnetic blocks in the installation groove of the rotor bracket.

[0004] As the rotor speed increases, the centrifugal force on the permanent magnets and the magnetic blocks increases. Due to the limitations of its own material, the radial restraint force provided by the retaining ring to the permanent magnets and the magnetic blocks is limited, and cannot meet the development trend of high-speed disc motors.

[0005] Therefore, how to make the disc motor meet the demand for higher rotation speed has become a technical problem that needs to be solved urgently by those skilled in the art. Summary of the invention

[0006] The present application proposes a rotor to enable the disc motor to meet the requirement of higher rotation speed. The present application also proposes a disc motor.

[0007] In order to achieve the above-mentioned object, the present application provides a rotor, including a rotor support, a magnetic conductive block, a permanent magnet and a retaining ring.

[0008] The rotor support is a stamping and rolling frame, and the magnetic conductive block and the rotor support are stamped and rolled as a whole.

[0009] The rotor support has a groove for mounting a permanent magnet, and one end of the groove away from the center of the rotor support is an open end.

[0010] The retaining ring is sleeved outside the rotor bracket to seal the open end.

[0011] The groove has a first limiting portion for radially limiting the permanent magnet block, and the permanent magnet has a second limiting portion that cooperates with the first limiting portion.

[0012] Preferably, in the above rotor, the groove includes a plurality of groove bodies arranged along the radial direction of the rotor support, the width of the groove body gradually increases from the inner ring of the rotor support to the retaining ring, and a step surface is provided between two adjacent groove bodies, and the step surface is the first limiting portion.

[0013] The permanent magnet includes a plurality of permanent magnet blocks adapted to the shape of the slot body, the end surface of the permanent magnet block away from the inner ring abuts against the step surface, and the end surface of the permanent magnet block away from the inner ring is a second limiting portion.

[0014] Preferably, in the above rotor, the permanent magnet block has a plurality of permanent magnet pieces arranged along the axial direction of the rotor support.

[0015] Preferably, in the above rotor, a height of the magnetic conductive block along the axial direction of the rotor support is greater than a height of the permanent magnet along the axial direction of the rotor support.

[0016] Preferably, in the above rotor, the retaining ring is a stamping and rolling retaining ring, and the retaining ring is bonded to the rotor bracket or the retaining ring and the rotor bracket are stamped and rolled integrally.

[0017] Preferably, in the above rotor, a height of the retaining ring along the axial direction of the rotor support is smaller than a height of the permanent magnet along the axial direction of the rotor support.

[0018] Preferably, in the above rotor, the edge of the magnetic conductive block is an inclined surface or a curved surface.

[0019] Preferably, in the above rotor, the rotor support comprises an inner ring, spokes and a magnetic back yoke.

[0020] The spokes are radially arranged along the outer circumference of the inner ring, the spokes are arranged on both sides of the magnetic block, the magnetic back yoke is provided between two adjacent spokes, and the magnetic back yoke and the spokes constitute the groove permanent magnet block.

[0021] Preferably, in the above-mentioned rotor, the magnetic back yoke is located in the middle or one side of the inner ring in the axial direction.

[0022] A disc motor comprises a rotor, wherein the rotor is the rotor described in any one of the above schemes.

[0023] The rotor provided in the embodiment of the present application includes a rotor bracket, a magnetic block, a permanent magnet and a retaining ring, wherein the magnetic block and the rotor bracket are integrally stamped and rolled to realize a fixed connection between the magnetic block and the rotor bracket. When the rotor rotates, the magnetic block and the rotor bracket rotate synchronously, and the retaining ring does not need to provide radial constraint force to the magnetic block, thereby reducing the strength requirement for the retaining ring, so that the disc motor with the rotor bracket can meet the development trend of high speed; at the same time, a first limiting portion is arranged in the groove, and a second limiting portion is arranged on the permanent magnet, and the first limiting portion cooperates with the second limiting portion to provide radial limitation to the permanent magnet, provide radial constraint to multiple positions of the permanent magnet along the radial direction of the rotor bracket, and reduce the radial constraint force provided by the retaining ring to the permanent magnet, so that the disc motor with the rotor bracket can meet the development trend of high speed.

[0024] The present application also discloses a disc motor, including a rotor, wherein the rotor is the rotor described in any one of the above schemes. Since the rotor has the above technical effects, the disc motor having the rotor also has the same technical effects, which will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some examples or embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without creative work, and the present application can also be applied to other similar scenarios based on the provided drawings. Unless it is obvious from the language environment or otherwise explained, the same reference numerals in the figures represent the same structure or operation.

[0026] Figure 1 is an exploded view of the permanent magnet and rotor bracket of the rotor of the present application;

[0027] Figure 2 It is a schematic diagram of the structure of the permanent magnet of the rotor and the rotor bracket of the present application;

[0028] Figure 3 It is a schematic diagram of the structure of the magnetic steel sheet of the rotor of the dual-rotor motor of the present application;

[0029] Figure 4 It is a front view of the magnetic steel sheet of the rotor of the dual-rotor motor of the present application;

[0030] Figure 5 is a schematic structural diagram of a rotor of a single-rotor motor of the present application;

[0031] Figure 6 is a three-dimensional diagram of the rotor of the single-rotor motor of the present application;

[0032] Figure 7 is a front view of the rotor of the single-rotor motor of the present application;

[0033] Figure 8 It is a schematic structural diagram of a rotor support of a rotor of a single-rotor motor of the present application;

[0034] Fig. 9 is a front view of a rotor support of a rotor of a single-rotor motor of the present application;

[0035] Fig.10 It is a schematic diagram of the structure of the magnetic steel sheet of the rotor of the single-rotor motor of the present application;

[0036] Fig.11is a side view of the rotor of the single-rotor motor of the present application;

[0037] Fig.12 It is a schematic structural diagram of a rotor support of a rotor of a dual-rotor motor of the present application;

[0038] Fig.13 is a front view of a rotor support of a rotor of a dual-rotor motor of the present application;

[0039] Fig.14 is a side view of a rotor support of a rotor of a dual-rotor motor of the present application;

[0040] Fig.15 It is a schematic diagram of the structure of the cooperation between the rotor support and the permanent magnet of the rotor of the dual-rotor motor of the present application;

[0041] The accompanying drawings are as follows:

[0042] 1- rotor support; 11- inner ring; 12- spokes; 13- magnetic conductive back yoke; 2- magnetic conductive block; 3- permanent magnet; 31- second limiting part; 4- retaining ring; 5- groove; 51- first limiting part. DETAILED DESCRIPTION

[0043] The present application will be further described in detail below in conjunction with the accompanying drawings and embodiments. It will be understood that the specific embodiments described herein are only used to explain the related application, rather than to limit the application. The described embodiments are only a part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0044] It should be noted that, for ease of description, only the parts related to the relevant applications are shown in the accompanying drawings. In the absence of conflict, the embodiments in this application and the features in the embodiments can be arbitrarily combined with each other, as long as the combined technical features are not contradictory. All feasible feature combinations are technical contents clearly recorded in this article. Any of the multiple sub-features contained in the same sentence can be applied independently, and does not have to be applied together with other sub-features.

[0045] As shown in this application and claims, unless the context clearly indicates an exception, the words "a", "an", "a kind" and / or "the" do not refer to the singular, but also include the plural. Generally speaking, the terms "include" and "comprise" only indicate the inclusion of clearly identified steps and elements, and these steps and elements do not constitute an exclusive list. The method or device may also include other steps or elements. The elements defined by the sentence "includes a..." do not exclude the existence of other identical elements in the process, method, commodity or device that includes the elements.

[0046] In the description of the embodiments of the present application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, "multiple" means two or more than two.

[0047] See also Figure 1-Figure 15 .

[0048] Some embodiments of the present application disclose a rotor, including a rotor support 1, a magnetic conductive block 2, a permanent magnet 3 and a retaining ring 4.

[0049] In this solution, the rotor bracket 1 is a stamped and rolled skeleton, and the magnetic block 2 is stamped and rolled integrally with the rotor bracket 1. Specifically, by designing the stamping shape of the silicon steel sheet, the rotor bracket 1 including the inner ring 11, spokes 12, magnetic back yoke 13 and magnetic block 2 is integrally wound to form.

[0050] like Figure 3-Figure 5 The figure shows a section of silicon steel sheet. The whole section of silicon steel sheet has multiple Figure 3 or Figure 5 In the repeating unit of the structure shown in , the entire section of silicon steel sheet is in a strip shape, and the silicon steel sheet rotates around the axis of the rotor bracket 1 and is stacked.

[0051] like Figure 1 , Figure 2 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 , Fig.12 , Fig.13 and Fig.15 As shown, the rotor bracket 1 has an inner ring 11, spokes 12 and a magnetic back yoke 13. The inner ring 11 is located in the innermost layer of the rotor bracket 1, and the spokes 12 are radially arranged along the outer circumference of the inner ring 11. The retaining ring 4 is located in the outermost layer of the rotor bracket 1, and the retaining ring 4 is connected to the end of the spoke 12 away from the inner ring 11. The magnetic block 2 and the permanent magnet 3 are located between the inner ring 11 and the outer ring, and the magnetic block 2 and the permanent magnet 3 are arranged at intervals in the circumferential direction of the inner ring 11.

[0052] In this solution, the magnetic block 2 and the rotor bracket 1 are integrally punched and rolled, spokes 12 are arranged on both sides of the magnetic block 2, a magnetic back yoke 13 is arranged between two adjacent spokes 12, and the magnetic back yoke 13 and the spokes 12 form a groove 5 for mounting the permanent magnet 3.

[0053] The rotor disclosed in this scheme is not only applicable to single-rotor motors, but also to dual-rotor motors. When the rotor is applicable to single-rotor motors, the magnetic back yoke 13 is located in the middle of the axial direction of the inner ring 11. When the rotor is applicable to dual-rotor motors, the magnetic back yoke 13 is located on one side of the axial direction of the inner ring 11. There is a difference in the thickness of the magnetic back yoke 13 of the rotor of the single-rotor motor and the dual-rotor motor. Specifically, the magnetic back yoke 13 of the dual-rotor motor, as the main magnetic circuit loop, needs to be thickened to avoid magnetic circuit saturation. The magnetic back yoke 13 of the single-rotor motor is thinner and only serves as a magnetic conductive part on the short magnetic circuit, while playing a supporting and fixing role.

[0054] like Figure 3-Figure 5 As shown, the thinner part in the middle of the silicon steel sheet punching is the magnetic conductive back yoke 13, which ensures that the silicon steel sheet punching can be wound and stacked as a whole without interruption.

[0055] The rotor is a symmetrical structure. The rotor d-axis is provided with a permanent magnet 3 of a certain thickness. The rotor q-axis is a magnetic conductive block 2. The magnetic resistance is very small, so that the difference between the d-axis and q-axis inductances of the rotor is large, and the asymmetry of the inductances of the d-axis and q-axis is fully utilized to generate magnetic resistance torque. At the same time, the permanent magnet 3 will also interact with the stator to generate permanent magnetic torque. If the permanent magnet 3 is replaced with air, the motor can only generate magnetic resistance torque. Among them, the d-axis is the central axis of the permanent magnet 3, and the q-axis is the symmetry line of the two adjacent d-axes, which differs from the d-axis by 90° electrical angle.

[0056] In some embodiments, the permanent magnet 3 is made of permanent magnetic material, which can be at least one of rare earth permanent magnet and ferrite. The permanent magnet 3 generates a permanent magnetic field with low magnetic permeability, which is close to that of air and has large magnetic resistance.

[0057] like Figure 1 , Figure 2 , Figure 6 , Figure 8 , Fig. 9 , Fig.10 , Fig.12 , Fig.13 and Fig.15 As shown, the end of the groove 5 away from the inner ring 11 is an open end, and the retaining ring 4 is used to block the open end. When the rotor rotates, the retaining ring 4 is used to provide radial limitation for the side of the permanent magnet 3 away from the inner ring 11.

[0058] The rotor disclosed in the present solution integrates the magnetic block 2 on the rotor bracket 1, which simplifies the production process of the rotor skeleton and realizes the fixed connection between the magnetic block 2 and the rotor bracket 1. When the rotor moves, the magnetic block 2 rotates synchronously with the rotor bracket 1 and moves relative to the rotor skeleton along the radial direction of the rotor bracket 1. The retaining ring 4 does not need to provide radial restraint force to the magnetic block 2. Under the premise that the strength of the retaining ring 4 remains unchanged, the rotor can adapt to the development trend of high speed.

[0059] The permanent magnet 3 is installed in the groove 5 , the spokes 12 are used to limit the permanent magnet 3 along the circumferential direction of the inner ring 11 , and the retaining ring 4 is used to limit the permanent magnet 3 along the radial direction of the inner ring 11 .

[0060] In this solution, a first limiting portion 51 is provided in the groove 5, and a second limiting portion 31 is provided on the permanent magnet 3. The first limiting portion 51 cooperates with the second limiting portion 31 to provide radial force to the permanent magnet 3 at multiple positions along the radial direction of the inner ring 11, thereby reducing the radial restraining force provided by the retaining ring 4 to the permanent magnet 3, so that the disc motor with the rotor bracket 1 can meet the development trend of high speed.

[0061] In some embodiments, the groove 5 includes a plurality of groove bodies arranged along the radial direction of the inner ring 11, the width of the groove body gradually increases from the inner ring 11 to the retaining ring 4, and a step surface is formed between two adjacent groove bodies, and the step surface is the first limiting portion 51, wherein the width of the groove body is the size of the groove body along the circumferential direction of the inner ring 11, and in this embodiment, two adjacent groove bodies are connected;

[0062] The permanent magnet 3 includes a permanent magnet block adapted to the shape of the slot body. The width of the permanent magnet block gradually increases along the radial direction of the inner ring 11. The end face of the permanent magnet block away from the inner ring 11 abuts against the step surface. The end face of the permanent magnet block away from the inner ring 11 is the second limiting portion 31.

[0063] The step surface limits the permanent magnet block located on the side of the step surface close to the inner ring 11, and the retaining ring 4 only provides radial force to the permanent magnet block located between the step surface and the retaining ring 4, thereby reducing the radial restraining force provided by the retaining ring 4 to the permanent magnet 3.

[0064] In this embodiment, the permanent magnet 3 can be divided into a plurality of permanent magnet blocks, and only one permanent magnet block or at least two permanent magnet blocks can be placed in a single slot.

[0065] In this embodiment, the permanent magnet 3 may be a whole permanent magnet, and the side wall of the permanent magnet 3 is provided with a limiting surface that cooperates with the step surface, and the limiting surface is the second limiting portion 31 .

[0066] In other embodiments, the first limiting portion 51 is a limiting protrusion arranged on the side wall and / or bottom wall of the groove 5, and the second limiting portion 31 is a limiting groove 5 arranged on the side wall and / or bottom wall of the permanent magnet 3. The radial limiting of the permanent magnet 3 is achieved by the cooperation between the limiting protrusion and the limiting groove 5.

[0067] In this embodiment, the shape of the groove 5 may not be modified, and the shape of the groove 5 is adapted to the shape of the permanent magnet 3 .

[0068] In this embodiment, the permanent magnet 3 can be a whole permanent magnet 3 or divided into multiple permanent magnet blocks. In the embodiment where the permanent magnet 3 is divided into multiple permanent magnet blocks, one permanent magnet block or at least two permanent magnet blocks can be placed on the side of the limiting protrusion close to the inner ring 11.

[0069] The first limiting portion 51 and the second limiting portion 31 are not limited to the above-mentioned embodiment, and may be in other forms, which are not specifically limited here.

[0070] In some embodiments, the permanent magnet block has a plurality of permanent magnet pieces arranged along the axial direction of the inner ring 11, i.e., the permanent magnet block is segmented along the axial direction. This not only facilitates the assembly of the permanent magnet block and the rotor bracket 1, but also can axially split the induced eddy current loop of the rotor, thereby reducing the rotor eddy current loss.

[0071] The height of the magnetic block 2 along the axial direction of the inner ring 11 is greater than the height of the permanent magnet 3 along the axial direction of the inner ring 11, so as to increase the inductance asymmetry between the d-axis and the q-axis, thereby increasing the magnetic resistance torque, saving the amount of permanent magnet 3 under the same torque; at the same time, the permanent magnet 3 as a permanent magnet 3 will also interact with the stator to generate permanent magnet torque.

[0072] In some embodiments, the retaining ring 4 is a stamping and rolling retaining ring, and the retaining ring 4 is bonded to the rotor support 1 or the retaining ring 4 and the rotor support 1 are stamping and rolling formed integrally.

[0073] In this solution, the rotor bracket 1 and the retaining ring 4 are both formed by stamping and rolling the permanent magnet 3, which ensures the overall strength of the rotor and enhances the rigidity and structural strength of the retaining ring 4, so that the retaining ring 4 can provide a large radial force to the permanent magnet 3, and can better exert the performance advantages of high-speed weak magnetic field of the disc salient pole motor.

[0074] This solution does not use a composite rotor bracket 1 and a carbon fiber retaining ring 4, but instead uses a rotor bracket 1 that is integrated with a magnetic block 2 and a retaining ring 4 through integral stamping and rolling of silicon steel sheets, etc., which not only reduces the types of materials, but also reduces the process difficulty of the rotor, improves the temperature resistance of the rotor, and improves the production efficiency and reliability of the disc motor.

[0075] The rotor disclosed in this solution greatly simplifies the rotor production process of the disc motor and reduces production costs by designing the stamping shape of the silicon steel sheets and integrally winding and laminating them into an integrated skeleton.

[0076] In order to reduce the eddy current loss of the retaining ring 4, the height of the retaining ring 4 along the axial direction of the inner ring 11 is smaller than the height of the permanent magnet 3 along the axial direction of the inner ring 11 to avoid affecting the main magnetic circuit and reduce the eddy current loss generated by the retaining ring 4 during the operation of the motor. At the same time, the length of the retaining ring 4 along the radial direction of the inner ring 11 should ensure that the structural strength can meet the requirements of limiting the radial displacement of the permanent magnet 3.

[0077] In some embodiments, the height of the retaining ring 4 along the axial direction of the inner ring 11 is less than or equal to half of the height of the permanent magnet 3 or the magnetic conductive block 2 along the axial direction of the inner ring 11 .

[0078] Under the premise of satisfying the limiting strength of the permanent magnet 3 , the heights of the spokes 12 and the inner ring 11 of the rotor support 1 should be reduced as much as possible, and the shape of the spokes 12 can be optimized by blocking the eddy current.

[0079] Since the magnetic lines of force will be concentrated at the right-angled sides, causing the magnetic density at the right-angled sides to be saturated and the loss to increase sharply, the edge of the magnetic conductive block 2 is designed as an inclined surface or a curved surface in this solution, which can greatly reduce the loss.

[0080] The inclined surface or curved surface of the edge of the magnetic conductive block 2 can be manufactured by cutting after the magnetic conductive block 2 is formed with the rotor support 1 by punching and rolling.

[0081] This solution also discloses a disc motor, including a rotor, which is the rotor described in any one of the above solutions. Since the rotor has the above technical effects, the disc motor having the rotor also has the same technical effects, which will not be described in detail here.

[0082] The above description is only a preferred embodiment of the present application and an explanation of the technical principles used, and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. The scope of application involved in the present application is not limited to the technical solution formed by a specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned application concept. For example, the above-mentioned features are replaced with the technical features with similar functions disclosed in this application (but not limited to) to form a technical solution.

Claims

1. A rotor, characterized in that: It comprises a rotor support (1), a magnetic conductive block (2), a permanent magnet (3) and a retaining ring (4). The rotor support (1) is a stamping and rolling-molded skeleton, and the magnetic conductive block (2) and the rotor support (1) are stamping and rolling-molded as a whole. The rotor support (1) has a groove (5) for mounting the permanent magnet (3), and an end of the groove (5) away from the center of the rotor support (1) is an open end. The retaining ring (4) is sleeved outside the rotor support (1) and is used to seal the open end. The groove (5) has a first limiting portion (51) for radially limiting the permanent magnet block, and the permanent magnet (3) has a second limiting portion (31) that cooperates with the first limiting portion (51).

2. The rotor according to claim 1, characterized in that The groove (5) comprises a plurality of groove bodies arranged along the radial direction of the rotor support (1), the width of the groove bodies gradually increasing from the inner ring (11) of the rotor support (1) towards the retaining ring (4), and a step surface is provided between two adjacent groove bodies, the step surface being the first limiting portion (51). The permanent magnet (3) comprises a plurality of permanent magnet blocks adapted to the shape of the slot body, the end faces of the permanent magnet blocks away from the inner ring (11) abut against the step surface, and the end faces of the permanent magnet blocks away from the inner ring (11) serve as second limiting portions (31).

3. The rotor according to claim 2, characterized in that The permanent magnet block comprises a plurality of permanent magnet pieces arranged along the axial direction of the rotor support (1).

4. The rotor according to claim 1, characterized in that The height of the magnetic conductive block (2) along the axial direction of the rotor support (1) is greater than the height of the permanent magnet (3) along the axial direction of the rotor support (1).

5. The rotor according to any one of claims 1 to 4, characterized in that: The retaining ring (4) is a stamping and rolling retaining ring, and the retaining ring (4) is bonded to the rotor support (1) or the retaining ring (4) and the rotor support (1) are stamped and rolled as one piece.

6. The rotor according to claim 5, characterized in that The height of the retaining ring (4) along the axial direction of the rotor support (1) is smaller than the height of the permanent magnet (3) along the axial direction of the rotor support (1).

7. The rotor according to claim 1, characterized in that The edge of the magnetic conductive block (2) is an inclined surface or a curved surface.

8. The rotor according to claim 1, characterized in that The rotor support (1) comprises an inner ring (11), spokes (12) and a magnetic back yoke (13). The spokes (12) are radially arranged along the outer circumference of the inner ring (11), the spokes (12) are arranged on both sides of the magnetic conductive block (2), a magnetic conductive back yoke (13) is provided between two adjacent spokes (12), and the magnetic conductive back yoke (13) and the spokes (12) form a permanent magnet block of the groove (5).

9. The rotor according to claim 8, characterized in that The magnetic conductive back yoke (13) is located in the middle or on one side of the inner ring (11) in the axial direction.

10. A disc motor, characterized in that: The invention comprises a rotor, wherein the rotor is the rotor according to any one of claims 1 to 9.

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