Supporting structure, rotor and motor

Abstract

The utility model relates to the technical field of motors, in particular to a supporting structure, a rotor and a motor. The supporting structure is used for being arranged in the motor, the supporting structure comprises a body, a connecting part is arranged on a first face of the body in the axis direction of the body, and the connecting part is used for being connected with a magnetic structure of the motor to form a rotating structure; a first groove is formed in the second face of the body, the first groove is sunken into the body from the second face, and the first groove is close to the peripheral end of the body. The first groove is arranged far away from the axis of the body, and the first groove can reduce the mass of the supporting structure far away from the rotating center, reduce the influence of centrifugal force on the supporting structure, and avoid deformation of the supporting structure, such as axial deformation of the supporting structure. Therefore, the support structure can provide effective and reliable support for the magnetic structure.

Description

Technical Field

[0001] This utility model relates to the field of motor technology, and in particular to a support structure, a rotor, and a motor. Background Technology

[0002] An axial flux motor includes a rotor, which comprises a rotor disk and a magnetic structure disposed within the rotor disk. During operation, the rotor disk rotates. Currently, as the rotational speed of an axial flux motor increases, the rotor disk is prone to deformation, causing it to fail to provide reliable support for the rotor. Utility Model Content

[0003] This utility model provides a support structure, a rotor, and a motor to solve the technical problem in the prior art where the rotor disk is prone to deformation, resulting in the rotor disk being unable to provide reliable support for the rotor.

[0004] In a first aspect, this utility model provides a support structure for installation in a motor. The support structure includes a body, and a connecting portion is provided on a first surface of the body along the axial direction of the body. The connecting portion is used to connect with the magnetic structure of the motor to form a rotating structure. A first groove is provided on a second surface of the body. The first groove is recessed into the body from the second surface and is located near the outer peripheral end of the body.

[0005] In some embodiments, the first groove is provided in a plurality of locations, and the plurality of first grooves are spaced apart about the axis of the body; and / or, the plurality of first grooves are spaced apart about the radial direction of the body.

[0006] In some embodiments, the first groove extends through the body along the axial direction.

[0007] In some embodiments, a cross-section perpendicular to the axis is taken, and the first groove is at least one of a circular, polygonal, or irregular shape.

[0008] In some embodiments, the support structure further includes a cover plate that seals the first groove.

[0009] In some embodiments, the cover plate has an annular structure and covers all the first grooves.

[0010] In some embodiments, the surface of the cover plate opposite to the first groove is flush with the second surface; and / or, the surface of the cover plate opposite to the first groove protrudes from the second surface.

[0011] In some embodiments, the cover plate includes a plurality of sub-cover plates, each of the sub-cover plates covering one of the first grooves.

[0012] In some embodiments, the surface of the sub-cover plate opposite to the first groove is flush with the second surface.

[0013] In some embodiments, each of the sub-covers has the same shape as the first groove it covers.

[0014] In some embodiments, the thickness of the cover plate is M, satisfying 0.01≤M≤20mm.

[0015] In some embodiments, the second surface is an annular surface, the second surface is disposed around the axis of the body, and the outer end of the second surface extends to the outer peripheral end of the body; along the axial direction of the body, the thickness of the body at the inner end of the second surface is greater than the thickness of the body at the outer end of the second surface.

[0016] In some embodiments, the second surface encloses and forms a first frustum-shaped structure, the inner end of the second surface forms the small end of the first frustum-shaped structure, and the outer end of the second surface forms the large end of the first frustum-shaped structure.

[0017] In some embodiments, the second surface includes at least two sub-annular surfaces; along the radial direction of the body, in two adjacent sub-annular surfaces, one sub-annular surface is located outside the other sub-annular surface, and the two adjacent sub-annular surfaces form a first-level step.

[0018] In some embodiments, the sub-annular surface is perpendicular to the axis.

[0019] In some embodiments, along the axial direction, the sub-annular surface is a slope, and the outer end of the sub-annular surface is closer to the first surface than the inner end of the sub-annular surface.

[0020] In some embodiments, the width of the sub-annular surface along the radial direction of the body is W1, satisfying 0.01≤W1≤150mm.

[0021] In some embodiments, along the axial direction, the minimum distance between two adjacent sub-annular surfaces is H1, which satisfies 0.01≤H1≤100mm.

[0022] In some embodiments, the second surface is an annular surface; the body is further provided with a second groove, which is perpendicular to the axial direction of the body, the second groove is located in the middle of the body, and the second groove is recessed into the body from the inner end of the second surface; a through hole is provided at the bottom of the second groove.

[0023] In some embodiments, the second groove wall of the second groove surrounds and forms a second frustum-shaped structure, the small end of the second frustum-shaped structure is connected to the bottom of the second groove, and the large end of the second frustum-shaped structure is connected to the inner end of the second surface; along the radial direction of the body, the bottom of the second groove, the second groove wall and the second surface form a Z-shaped structure.

[0024] In some embodiments, the diameter of the through hole is D1, which satisfies 1mm≤D1≤200mm.

[0025] In some embodiments, the connecting portion is a third groove, which is recessed into the body from the first surface.

[0026] In some embodiments, the depth of the third groove along the axial direction is H2, satisfying 0mm≤H2≤50mm.

[0027] In some embodiments, the sidewall of the third groove near the axis is disposed along the axis direction, and the sidewall of the third groove near the axis forms a first annular structure.

[0028] In some embodiments, the diameter of the first annular structure is D2, which satisfies 1mm≤D2≤350mm.

[0029] In some embodiments, the sidewall of the third groove away from the axis is disposed along the axis direction, and the sidewall of the third groove away from the axis encloses to form a second annular structure.

[0030] In some embodiments, the diameter of the second annular structure is D3, satisfying 10mm≤D3≤500mm.

[0031] Secondly, this utility model embodiment provides a rotor, the rotor including a magnetic structure and a support structure as described above, the magnetic structure being connected to the connection portion of the support structure.

[0032] Thirdly, this utility model embodiment also provides an electric motor, which includes the rotor as described above.

[0033] Compared with prior art, the present invention has the following advantages:

[0034] In the support structure of this embodiment, at least one first groove is provided on the second surface of the main body, and the first groove is located near the outer peripheral end of the main body, that is, away from the axis of the main body. The first groove can reduce the mass of the support structure away from the center of rotation, reduce the influence of centrifugal force on the support structure, and prevent deformation of the support structure, such as preventing axial deformation. Therefore, the support structure can provide effective and reliable support for the magnetic structure.

[0035] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of this utility model more obvious and understandable, specific embodiments of this utility model are given below. Attached Figure Description

[0036] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0037] Figure 1 This is a schematic diagram of the support structure at a first angle in the first embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the support structure at a second angle in the first embodiment of this application;

[0039] Figure 3 yes Figure 1 A schematic diagram of the front view of the support structure shown in the figure;

[0040] Figure 4 yes Figure 3 A structural schematic diagram of the right view of the supporting structure shown;

[0041] Figure 5 yes Figure 3 A schematic diagram of the structural support structure shown in the AA cross-sectional view;

[0042] Figure 6 This is a schematic diagram of the support structure at a first angle in the second embodiment of this application;

[0043] Figure 7 This is a schematic diagram of the support structure at a second angle in the second embodiment of this application;

[0044] Figure 8 yes Figure 6 A schematic diagram of the front view of the support structure shown in the figure;

[0045] Figure 9 yes Figure 8 A structural schematic diagram of the right view of the supporting structure shown;

[0046] Figure 10 yes Figure 8 A schematic diagram of the structural support structure shown in the BB cross-sectional view;

[0047] Figure 11 yes Figure 10 A schematic diagram of the enlarged view of part F in the support structure shown;

[0048] Figure 12 This is a schematic diagram of the support structure at a first angle in the third embodiment of this application;

[0049] Figure 13 This is a schematic diagram of the support structure at a second angle in the third embodiment of this application;

[0050] Figure 14 yes Figure 12 A schematic diagram of the front view of the support structure shown in the figure;

[0051] Figure 15 yes Figure 14 A structural schematic diagram of the right view of the supporting structure shown;

[0052] Figure 16 yes Figure 14 A schematic diagram of the structural support structure shown in the CC cross-sectional view;

[0053] Figure 17 yes Figure 16 An enlarged view of the structural schematic diagram of part G in the support structure shown;

[0054] Figure 18 This is a schematic diagram of the support structure at a first angle in the fourth embodiment of this application;

[0055] Figure 19 This is a schematic diagram of the support structure at a second angle in the fourth embodiment of this application;

[0056] Figure 20 yes Figure 18 A schematic diagram of the front view of the support structure shown in the figure;

[0057] Figure 21 yes Figure 20 A structural schematic diagram of the right view of the supporting structure shown;

[0058] Figure 22 yes Figure 20 A schematic diagram of the DD cross-sectional view of the support structure shown in the figure;

[0059] Figure 23 yes Figure 22 A schematic diagram of the enlarged view of section H in the support structure shown;

[0060] Figure 24 This is a structural schematic diagram of the front view of the body in the fourth embodiment of this application;

[0061] Figure 25 yes Figure 24 A structural schematic diagram of the EE cross-sectional view of the body shown;

[0062] Figure 26 yes Figure 25A schematic diagram of the enlarged view of part I in the support structure shown;

[0063] Figure 27 This is a three-dimensional structural schematic diagram of the body in the fourth embodiment of this application;

[0064] Figure 28 This is a three-dimensional structural schematic diagram of the cover plate in the embodiments of this application;

[0065] Figure 29 This is a structural schematic diagram of the cover plate in the embodiment of this application;

[0066] Figure 30 This is a schematic diagram of the structure of the cover plate in the embodiment of this application, viewed from the right.

[0067] Figure label:

[0068] 1. Body; 11. Through hole; 12. First surface; 13. Connecting part; 14. Second surface; 15. Sub-annular surface; 16. First groove; 17. Second groove; 171. Second groove wall; 172. Second groove bottom; 18. Third groove; 20. Groove top; 21. Recess;

[0069] 3. Cover plate. Detailed Implementation

[0070] Exemplary embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0071] This application provides a support structure disposed inside a motor. The motor includes a rotating shaft and a magnetic structure. The support structure is connected to the rotating shaft and the magnetic structure respectively, and the support structure can be used to support the magnetic structure.

[0072] Reference Figures 1 to 30 As shown, the support structure includes a body 1. Along the axial direction X of the body 1, a connecting part 13 is provided on the first surface 12 of the body 1. The connecting part 13 is used to connect with the magnetic structure of the motor to form a rotating structure. A first groove 16 is provided on the second surface 14 of the body 1. The first groove 16 is recessed from the second surface 14 into the body 1 and is close to the outer peripheral end of the body 1.

[0073] The support structure is connected to the magnetic structure of the motor via the connecting part 13, thereby enabling the installation and support of the magnetic structure. The axis of the main body 1 also serves as the rotation center of the support structure during operation.

[0074] In this embodiment, the second surface 14 of the body 1 is provided with at least one first groove 16, and the first groove 16 is located near the outer peripheral end of the body 1, that is, the first groove 16 is located away from the axis of the body 1. During the rotation of the rotating structure formed by the connection part 13 and the magnetic structure, the first groove 16 can reduce the mass of the support structure away from the center of rotation, reduce the influence of centrifugal force on the support structure, and avoid deformation of the support structure, such as avoiding axial deformation of the support structure. Therefore, the support structure of this embodiment can provide effective and reliable support for the magnetic structure.

[0075] In some embodiments, multiple first grooves 16 are provided, and the multiple first grooves 16 are spaced apart around the axis of the body 1. The above structure of the embodiments of this application can be referred to... Figure 14 As shown, a plurality of first grooves 16 are spaced apart around the axis of the body 1, and the first grooves 16 are close to the outer peripheral end of the body 1.

[0076] In this embodiment of the application, "multiple" refers to at least two, and "multiple first grooves 16" means two or more first grooves 16.

[0077] In some embodiments, a plurality of first grooves 16 are spaced apart along the radial direction Y of the body 1. That is, along the radial direction Y of the body 1, two first grooves 16 are spaced apart, three first grooves 16 are spaced apart, etc.

[0078] In this embodiment, the number and arrangement of the first grooves 16 are selected according to the specific usage requirements. For example, referring to... Figure 14 As shown, a total of 12 first grooves 16 are provided. The 12 first grooves 16 are arranged at intervals around the axis of the body 1. Along the radial direction Y of the body 1, one first groove 16 is provided. The 12 first grooves 16 are arranged in a circle around the axis of the body 1.

[0079] In some embodiments, along the axial direction X, the bottom of the first groove 16 is close to the first surface 12.

[0080] In some embodiments, the first groove 16 penetrates the body 1 along the axial direction X. The above-described structure of the embodiments of this application can further reduce the weight of the support structure, especially the mass of the support structure far from the rotation center, optimize the mass distribution of the support structure, reduce the influence of centrifugal force on the support structure, thereby better avoiding deformation of the support structure and providing effective and reliable support for the magnetic structure.

[0081] In some embodiments, the shape of the first groove 16 can be set according to the usage requirements. This application embodiment does not specifically limit this. For example, when the cross-section is made perpendicular to the axis, the first groove 16 is at least one of the following shapes: circular, polygonal, or irregular.

[0082] Reference Figure 14 As shown, when a cross-section is taken perpendicular to the axis, the first groove 16 has a quadrilateral-like structure with a pair of arc-shaped sidewalls and a pair of straight-segment sidewalls.

[0083] In some embodiments, the size of the first groove 16 is also set according to usage requirements, and the sizes of multiple first grooves 16 may be the same or different.

[0084] In some embodiments, the support structure further includes a cover plate 3, which covers the first groove 16. In the above structure of this application embodiment, the cover plate 3 covering the first groove 16 can effectively reduce wind wear loss when the support structure rotates, thereby improving the energy efficiency and reliability of the motor.

[0085] In some embodiments, refer to Figures 28-30 As shown, the cover plate 3 has a ring-shaped structure and covers all the first grooves 16. The above-described structure of this embodiment, where a single cover plate 3 covers all the first grooves 16, provides the support structure with the advantage of simple and convenient assembly.

[0086] In some embodiments, the surface of the cover plate 3 facing away from the first groove 16 is not lower than the second surface 14. In this case, the surface of the cover plate 3 facing away from the first groove 16 is flush with the second surface 14; and / or, the surface of the cover plate 3 facing away from the first groove 16 protrudes from the second surface 14. The above-described structure of the embodiments of this application can effectively reduce wind wear during the rotation of the support structure.

[0087] In some embodiments, the cover plate 3 includes a plurality of sub-cover plates 3, each sub-cover plate 3 covering a first groove 16. That is, each sub-cover plate 3 is provided with a first groove 16, which can reduce the amount of material used in the cover plate 3.

[0088] In some embodiments, in order to adapt the sub-cover plate 3 to the first groove 16, each sub-cover plate 3 has the same shape as the first groove 16 it covers.

[0089] In some embodiments, in order to reduce wind wear during the rotation of the support structure, the surface of the sub-cover plate 3 facing away from the first groove 16 is flush with the second surface 14.

[0090] In some embodiments, the thickness of the cover plate 3 is M, satisfying 0.01≤M≤20mm. When the thickness M of the cover plate 3 in this embodiment satisfies the above range, the cover plate 3 meets the requirement of sealing the first groove 16 and effectively reduces wind wear during the rotation of the support structure.

[0091] It is understood that the thickness M of the cover plate 3 is set according to the specific usage requirements. This application embodiment does not specifically limit this. When M is small, the cover plate 3 is thinner; when M is large, the cover plate 3 is thicker. For example, the thickness M of the cover plate 3 is 0.01mm, 0.02mm, 0.1mm, 0.5mm, 1mm, 2mm, 5mm, 8mm, 10mm, 12mm, 14mm, 15mm, 18mm, 20mm, and the range of values ​​between the above.

[0092] In some embodiments, the second surface 14 is an annular surface, the second surface 14 is disposed around the axis of the body 1, and the outer end of the second surface 14 extends to the outer peripheral end of the body 1; along the axial direction X of the body 1, the thickness of the body 1 at the inner end of the second surface 14 is greater than the thickness of the body 1 at the outer end of the second surface 14.

[0093] In the above structure of this application embodiment, along the axial direction X of the body 1, the thickness of the body 1 at the inner end of the second surface 14 is greater than the thickness of the body 1 at the outer end of the second surface 14. This can reduce the mass of the support structure far from the rotation center, thereby reducing the influence of centrifugal force on the support structure and preventing deformation of the support structure. The support structure can provide effective and reliable support for the magnetic structure.

[0094] In some embodiments, the second surface 14 encloses and forms a first frustum-shaped structure, with the inner end of the second surface 14 forming the small end of the first frustum-shaped structure and the outer end of the second surface 14 forming the large end of the first frustum-shaped structure. In the above structure of the embodiments of this application, the angle between the second surface 14 and the axial direction X is an acute angle, and the outer end of the second surface 14 is inclined toward the first surface 12.

[0095] It is understood that the angle between the second surface 14 and the axial direction X is set according to usage requirements, and this embodiment does not specifically limit it. When the angle between the second surface 14 and the axial direction X is relatively large, the mass of the support structure farther from the rotation center is relatively large; when the angle between the second surface 14 and the axial direction X is relatively small, the mass of the support structure farther from the rotation center is relatively small. The setting of the angle between the second surface 14 and the axial direction X needs to take into account requirements such as the rotational speed of the support structure.

[0096] In some embodiments, the second surface 14 includes at least two sub-annular surfaces 15; along the radial direction Y of the body 1, in two adjacent sub-annular surfaces 15, one sub-annular surface 15 is located outside the other sub-annular surface 15, and the two adjacent sub-annular surfaces 15 form a step. In the above structure of the embodiments of this application, the second surface 14 is a stepped surface. At the sub-annular surface 15 closest to the outer peripheral end of the body 1, the thickness of the body 1 corresponding to the sub-annular surface 15 along the axial direction X is the smallest; at the sub-annular surface 15 closest to the axis of the body 1, the thickness of the body 1 corresponding to the sub-annular surface 15 along the axial direction X is the largest.

[0097] In this embodiment, the sub-annular surface 15 is an annular surface, and the second surface 14 is a stepped surface, which can reduce the mass of the support structure far from the rotation center, thereby reducing the influence of centrifugal force on the support structure. The support structure can provide effective and reliable support for the magnetic structure.

[0098] In some embodiments, the sub-annular surface 15 is perpendicular to the axis.

[0099] In other embodiments, along the axial direction X, the sub-annular surface 15 is a slope, the outer end of the sub-annular surface 15 is closer to the first surface 12 than the inner end of the sub-annular surface 15, and the outer end of the sub-annular surface 15 is inclined toward the first surface 12.

[0100] It is understood that the angle between the sub-annular surface 15 and the axial direction X is set according to the usage requirements, and this application embodiment does not specifically limit this. The number of sub-annular surfaces 15 along the radial direction Y of the body 1 is also not specifically limited in this application embodiment.

[0101] In some embodiments, the width of the sub-annular surface 15 along the radial direction Y of the body 1 is W1, satisfying 0.01≤W1≤150mm. In this embodiment, when the width of the sub-annular surface 15 is within the above range, the mass of the support structure away from the rotation center meets the requirement for reducing centrifugal force, so that the support structure can provide effective and reliable support for the magnetic structure.

[0102] It is understandable that the width W1 of the sub-annular surface 15 along the radial direction Y of the body 1 is specifically set according to the usage requirements. For example, W1 is 0.01mm, 0.02mm, 0.1mm, 0.5mm, 1mm, 5mm, 10mm, 20mm, 50mm, 60mm, 70mm, 80mm, 100mm, 120mm, 130mm, 140mm, 150mm, and the range of values ​​between the above.

[0103] In some embodiments, along the axial direction X, the minimum distance between two adjacent sub-annular surfaces 15 is H1, satisfying 0.01≤H1≤100mm. In this embodiment, when the minimum distance between two adjacent sub-annular surfaces 15 is within the above range, the mass of the support structure away from the rotation center meets the requirement for reducing centrifugal force, enabling the support structure to provide effective and reliable support for the magnetic structure.

[0104] It is understandable that the width W1 of the sub-annular surface 15 along the radial Y of the body 1 is set according to the usage requirements. For example, W1 is 0.01mm, 0.02mm, 0.1mm, 0.5mm, 1mm, 5mm, 10mm, 20mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, and the range between the above values.

[0105] In some embodiments, the second surface 14 is an annular surface; the body 1 is also provided with a second groove 17, which is perpendicular to the axial direction X of the body 1. The second groove 17 is located in the middle of the body 1 and is recessed into the body 1 from the inner end of the second surface 14. The second groove bottom 172 of the second groove 17 is provided with a through hole 11.

[0106] In this embodiment, the second groove 17 has a second groove wall 171 and a second groove bottom 172. One end of the second groove wall 171 is connected to the inner end of the second surface 14, and the other end of the second groove wall 171 is connected to the second groove bottom 172. Taking a cross-section perpendicular to the axis, the second surface 14, the second groove wall 171, and the second groove 17 form a Z-shaped structure. This Z-shaped structure can improve the bending resistance of the support structure and control the axial deformation of the support structure. The support structure provides strong support and protection for increasing the motor speed, preventing rotor breakage and rotor rubbing.

[0107] In some embodiments, the second groove wall 171 of the second groove 17 encloses and forms a second frustum-shaped structure, the small end of the second frustum-shaped structure is connected to the second groove bottom 172, and the large end of the second frustum-shaped structure is connected to the inner end of the second surface 14; along the radial Y of the body, the second groove bottom 172, the second groove wall 171 and the second surface 14 form a Z-shaped structure.

[0108] In this embodiment, the second groove wall 171 is a slope, and the angle between the second groove wall 171 and the axial direction is an acute angle. At this time, along the radial Y of the body, the second groove bottom 172, the second groove wall 171 and the second surface 14 form a Z-shaped structure. This Z-shaped structure can better improve the bending resistance of the support structure, control the axial deformation of the support structure, and the support structure can meet the requirements for increasing the motor speed and prevent the rotor from cracking and rubbing.

[0109] In some embodiments, the diameter of the through hole 11 is D1, which satisfies 1mm≤D1≤200mm.

[0110] In the support structure of this application embodiment, the through hole 11 is used to house the motor shaft, and the body 1 is fixedly connected to the shaft through the through hole 11. The fixed connection structure between the through hole 11 and the shaft can be set according to the usage requirements, for example, the through hole 11 can be connected to the shaft via a keyway or an interference fit.

[0111] It is understood that the diameter D1 of the through hole 11 is specifically set according to the usage requirements. This application embodiment does not specifically limit it. When D1 is small, the support structure is suitable for smaller motors; when D1 is large, the support structure is suitable for larger motors. For example, the diameter D1 of the through hole 11 is 1mm, 5mm, 10mm, 20mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, and a range of values ​​between the above.

[0112] In some embodiments, the connecting portion 13 is a third groove 18, which is recessed from the first surface 12 into the body 1. In this embodiment, when the connecting portion 13 is a third groove 18, the magnetic structure is disposed within the third groove 18, which provides mounting and protection for the magnetic structure.

[0113] In some embodiments, the depth of the third groove 18 along the axial direction X is H2, satisfying 0mm≤H2≤50mm. In the above structure of the embodiments of this application, when the depth H2 of the third groove 18 is 0mm, the connecting part 13 is a planar structure, and the magnetic structure can be connected to the connecting part 13 by means of adhesive or the like.

[0114] It is understood that the depth H2 of the third groove 18 is set according to the specific usage requirements, and this application embodiment does not specifically limit it. When H2 is small, the third groove 18 is shallow; when H2 is large, the third groove 18 is deep. For example, the depth H2 of the third groove 18 is 0mm, 1mm, 5mm, 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, 40mm, 45mm, 50mm, and a range of values ​​between the above.

[0115] In some embodiments, the sidewall of the third groove 18 near the axis is disposed along the axial direction X, and the sidewall of the third groove 18 near the axis forms a first annular structure. In the above structure of the embodiments of this application, the shape of the third groove 18 is relatively regular, which facilitates the installation of the magnetic structure. Moreover, when the magnetic structure is sleeved on the sidewall of the third groove 18 near the axis, the fact that the sidewall of the third groove 18 near the axis is disposed along the axial direction X can effectively prevent the magnetic structure from falling off the sidewall of the third groove 18 near the axis.

[0116] In some embodiments, the diameter of the first annular structure is D2, which satisfies 1mm≤D2≤350mm.

[0117] It is understood that the diameter D2 of the first annular structure is specifically set according to the usage requirements. This application embodiment does not specifically limit this. When D2 is small, the support structure is suitable for smaller motors; when D2 is large, the support structure is suitable for larger motors. For example, the diameter D2 of the first annular structure is 1mm, 5mm, 10mm, 20mm, 40mm, 50mm, 60mm, 70mm, 80mm, 90mm, 100mm, 110mm, 120mm, 130mm, 140mm, 150mm, 160mm, 170mm, 180mm, 190mm, 200mm, 220mm, 250mm, 270mm, 290mm, 300mm, 320mm, 330mm, 350mm, and a range of values ​​between the above.

[0118] In some embodiments, the sidewall of the third groove 18 away from the axis is disposed along the axial direction X, and the sidewall of the third groove 18 away from the axis forms a second annular structure. In the above structure of the embodiments of this application, the shape of the third groove 18 is relatively regular, which facilitates the installation of the magnetic structure.

[0119] In some embodiments, the diameter of the second annular structure is D3, satisfying 10mm≤D3≤500mm.

[0120] It is understood that the diameter D3 of the second annular structure is specifically set according to the usage requirements. This application embodiment does not specifically limit it. When D3 is small, the support structure is suitable for smaller motors; when D3 is large, the support structure is suitable for larger motors. For example, the diameter D3 of the second annular structure is 10mm, 40mm, 50mm, 70mm, 90mm, 100mm, 110mm, 130mm, 150mm, 170mm, 190mm, 200mm, 220mm, 250mm, 270mm, 290mm, 300mm, 320mm, 330mm, 350mm, 400mm, 450mm, 500mm, and a range of values ​​between the above.

[0121] In some embodiments, refer to Figures 1 to 5 As shown, the support structure includes a body 1. A through hole 11 is provided in the middle of the body 1 along the axial direction X, for fixed connection with the motor shaft. Along the axial direction X of the body 1, a connecting portion 13 is provided on the first surface 12 of the body 1. This connecting portion 13 is a third groove 18, which is recessed from the first surface 12 into the body 1 and is used for connection with the magnetic structure of the motor. Furthermore, the body 1 also has a second groove 17, perpendicular to the axial direction X of the body 1. The second groove 17 is located in the middle of the body 1 and is recessed from the inner end of the second surface 14 into the body 1. A through hole 11 is provided at the bottom 172 of the second groove 17.

[0122] Further reference Figures 1 to 5 As shown, the second surface 14 is an annular surface, and the angle between the second surface 14 and the axial direction X is an acute angle. The outer end of the second surface 14 is inclined toward the first surface 12.

[0123] Among them, reference Figure 2 As shown, the relationship between the first surface 12 and the top 20 of the third groove 18 is set according to the usage requirements. For example, the first surface 12 protrudes from the top 20 of the groove, or the first surface 12 is flush with the top 20 of the groove, or the first surface 12 is recessed into the top 20 of the groove.

[0124] Further reference Figures 6 to 11 As shown, in some embodiments, the second surface 14 is a stepped surface, and the second surface 14 includes at least two sub-annular surfaces 15; along the radial Y of the body 1, the sub-annular surface 15 closest to the axis of the body 1 is arranged around the axis of the body 1, and each of the remaining sub-annular surfaces 15 is arranged around one sub-annular surface 15, and two adjacent sub-annular surfaces 15 form a step. The second surface 14 is provided with at least one step.

[0125] Further reference Figures 12 to 17 As shown, in some embodiments, a first groove 16 is provided on the second surface 14 of the body 1. The first groove 16 is recessed from the second surface 14 into the body 1 and is close to the outer peripheral end of the body 1.

[0126] Further reference Figures 18 to 23As shown, in some embodiments, the support structure further includes a cover plate 3, which covers the first groove 16. To facilitate the connection between the cover plate 3 and the body 1, and to make the cover plate 3 flush with the second surface 14, a recess 21 is also provided on the body 1. When the cover plate 3 covers all the first grooves 16, the recess 21 surrounds all the first grooves 16, and the cover plate 3 is disposed within the recess 21. When each sub-cover plate 3 covers one first groove 16, the recess 21 surrounds one first groove 16, and the sub-cover plate 3 is disposed within the recess 21.

[0127] The cover plate 3 is shaped to match the surface of the second surface 14 away from the first groove 16. Therefore, the surface of the cover plate 3 away from the first groove 16 can be a slope or a stepped surface. The cover plate 3 and the body 1 can be fixedly connected by interference fit, glue bonding or other fitting methods.

[0128] The support structure of this application embodiment, the first groove 16, and the thickness of the body 1 at the inner end of the second surface 14 along the axial direction X of the body 1 is greater than the thickness of the body 1 at the outer end of the second surface 14, can reduce the mass of the support structure far from the rotation center, reduce the influence of centrifugal force on the support structure, and avoid deformation of the support structure, such as avoiding axial deformation of the support structure.

[0129] The second surface 14, the second groove wall 171, and the second groove 17 form a Z-shaped structure. This Z-shaped structure can improve the bending resistance of the support structure and control the axial deformation of the support structure. The support structure provides strong support and protection for increasing the motor speed and prevents the rotor from bursting or rubbing.

[0130] To further increase the structural strength of the support structure, reinforcing ribs can be installed on all surfaces of the support structure to provide effective support and protection for the motor.

[0131] Therefore, the support structure of this application embodiment has extremely strong safety and reliability, and can provide effective support and protection for motors that increase speed.

[0132] Moreover, the setting of the second groove 17 forms a concave structure on the support structure, which makes it easier for the support structure and other components in the motor to make more effective use of axial space and shorten the axial length of the motor; the setting of the cover plate 3 can reduce wind friction loss and meet the high-performance requirements of the motor.

[0133] This application provides a rotor, which includes a magnetic structure and a support structure as described above, with the magnetic structure connected to the support structure via a connection portion 13.

[0134] In this embodiment, the rotor includes the aforementioned support structure. Since the mass of the portion of the support structure furthest from the rotation center is relatively small, the influence of centrifugal force on the support structure can be reduced, preventing deformation and ensuring reliable support for the magnetic structure. The second surface 14, the second groove wall 171, and the second groove 17 in the support structure form a Z-shaped structure. This Z-shaped structure improves the bending resistance of the support structure and controls its axial deformation. The support structure provides strong support and protection for increasing motor speed, preventing rotor breakage and rotor rubbing.

[0135] This application also provides an electric motor, which includes the rotor described above.

[0136] The motor can be an axial flux motor, or other motors that can use the above-described support structure. The motor has at least one rotor; for example, it may have two rotors, spaced apart along the axial direction X.

[0137] In the motor, the support structure possesses extremely high safety and reliability, providing effective support and protection for the motor as it accelerates. Furthermore, the design of the second groove 17 creates a concave structure on the support structure, facilitating more effective use of axial space by the support structure and other components in the motor, thus shortening the axial length of the motor. The cover plate 3 reduces windage losses, meeting the motor's requirements for superior and efficient performance.

[0138] In the embodiments of this application, the support structure, rotor and motor can be referenced to each other and have the same or similar beneficial effects as any of the aforementioned support structures. To avoid repetition, they will not be described again here.

[0139] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes the element.

[0140] The various embodiments in this specification are described in a related manner. The same or similar parts between the various embodiments can be referred to each other. Each embodiment focuses on describing the differences from other embodiments.

[0141] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

Claims

1. A support structure for mounting in a motor, characterized in that, The support structure includes, Body (1), along the axial direction (X) of said body (1), The first surface (12) of the main body (1) is provided with a connecting part (13), which is used to connect with the magnetic structure of the motor to form a rotating structure; The second surface (14) of the body (1) is provided with a first groove (16), the first groove (16) is recessed from the second surface (14) into the body (1), and the first groove (16) is close to the outer peripheral end of the body (1).

2. The support structure according to claim 1, characterized in that, The first groove (16) is provided in multiple portions, and the multiple first grooves (16) are spaced apart around the axis of the body (1); and / or, The first grooves (16) are spaced apart along the radial (Y) direction of the body (1).

3. The support structure according to claim 1, characterized in that, Along the axial direction (X), the first groove (16) penetrates the body (1).

4. The support structure according to claim 1, characterized in that, A cross section perpendicular to the axis is made, and the first groove (16) is at least one of a circle or a polygon.

5. The support structure according to claim 1, characterized in that, The support structure also includes a cover plate (3), which covers the first groove (16).

6. The support structure according to claim 5, characterized in that, The cover plate (3) has an annular structure and covers all the first grooves (16).

7. The support structure according to claim 6, characterized in that, The surface of the cover plate (3) facing away from the first groove (16) is flush with the second surface (14); and / or, the surface of the cover plate (3) facing away from the first groove (16) protrudes from the second surface (14).

8. The support structure according to claim 5, characterized in that, The cover plate (3) includes a plurality of sub-cover plates (3), each of the sub-cover plates (3) covering one of the first grooves (16).

9. The support structure according to claim 8, characterized in that, The surface of the sub-cover plate (3) facing away from the first groove (16) is flush with the second surface (14).

10. The support structure according to claim 8, characterized in that, Each of the sub-covers (3) has the same shape as the first groove (16) that it covers.

11. The support structure according to claim 5, characterized in that, The thickness of the cover plate (3) is M, which satisfies 0.01≤M≤20mm.

12. The support structure according to claim 1, characterized in that, The second surface (14) is an annular surface, and the second surface (14) is arranged around the axis of the body (1), with the outer end of the second surface (14) extending to the outer periphery of the body (1); Along the axial direction (X) of the body (1), the thickness of the body (1) at the inner end of the second surface (14) is greater than the thickness of the body (1) at the outer end of the second surface (14).

13. The support structure according to claim 12, characterized in that, The second surface (14) encloses and forms a first frustum-shaped structure. The inner end of the second surface (14) forms the small end of the first frustum-shaped structure, and the outer end of the second surface (14) forms the large end of the first frustum-shaped structure.

14. The support structure according to claim 12, characterized in that, The second surface (14) includes at least two sub-annular surfaces (15); along the radial (Y) direction of the body (1), in two adjacent sub-annular surfaces (15), one sub-annular surface (15) is located outside the other sub-annular surface (15), and two adjacent sub-annular surfaces (15) form a first-level step.

15. The support structure according to claim 14, characterized in that, The sub-annular surface (15) is perpendicular to the axis.

16. The support structure according to claim 14, characterized in that, Along the axial direction (X), the sub-annular surface (15) is a slope, and the outer end of the sub-annular surface (15) is closer to the first surface (12) than the inner end of the sub-annular surface (15).

17. The support structure according to claim 14, characterized in that, Along the radial direction (Y) of the body (1), the width of the sub-annular surface (15) is W1, which satisfies 0.01≤W1≤150mm.

18. The support structure according to claim 14, characterized in that, Along the axial direction (X), the minimum distance between two adjacent sub-annular surfaces (15) is H1, which satisfies 0.01≤H1≤100mm.

19. The support structure according to claim 1, characterized in that, The second surface (14) is an annular surface; the body (1) is also provided with a second groove (17) perpendicular to the axis (X) of the body (1), the second groove (17) is located in the middle of the body (1), and the second groove (17) is recessed into the body (1) from the inner end of the second surface (14); the second groove bottom (172) of the second groove (17) is provided with a through hole (11).

20. The support structure according to claim 19, characterized in that, The second groove wall (171) of the second groove (17) encloses to form a second frustum structure. The small end of the second frustum structure is connected to the bottom of the second groove (172), and the large end of the second frustum structure is connected to the inner end of the second surface (14). Along the radial (Y) direction of the body (1), the second groove bottom (172), the second groove wall (171), and the second surface (14) form a Z-shaped structure.

21. The support structure according to claim 19, characterized in that, The diameter of the through hole (11) is D1, which satisfies 1mm≤D1≤200mm.

22. The support structure according to claim 1, characterized in that, The connecting part (13) is a third groove (18), which is recessed from the first surface (12) into the body (1).

23. The support structure according to claim 22, characterized in that, Along the axial direction (X), the depth of the third groove (18) is H2, which satisfies 0mm≤H2≤50mm.

24. The support structure according to claim 22, characterized in that, The third groove (18) is arranged along the axial direction (X) on the side wall near the axis, and the third groove (18) forms a first annular structure by enclosing the side wall near the axis.

25. The support structure according to claim 24, characterized in that, The diameter of the first annular structure is D2, which satisfies 1mm≤D2≤350mm.

26. The support structure according to claim 22, characterized in that, The sidewall of the third groove (18) away from the axis is arranged along the axis direction (X), and the sidewall of the third groove (18) away from the axis forms a second annular structure.

27. The support structure according to claim 26, characterized in that, The diameter of the second annular structure is D3, which satisfies 10mm≤D3≤500mm.

28. A rotor, characterized in that, The rotor includes a magnetic structure and a support structure as described in any one of claims 1-27, wherein the magnetic structure is connected to the connection portion (13) of the support structure.

29. An electric motor, characterized in that, Includes the rotor as described in claim 28.

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