Motor
By employing multiple cylindrical rotor frames arranged axially in the motor and combined with resin integral molding or adhesive connection, the problems of increased rotor mass and assembly difficulties in the prior art are solved, thereby achieving improved motor torque and optimized energy efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-13
- Publication Date
- 2026-03-13
AI Technical Summary
When existing motors are used in equipment with limited radial dimensions, increasing the torque by increasing the height of the iron core and the magnet results in increased rotor mass, reduced output torque, increased moment of inertia, significant energy loss, and difficult assembly.
The structure employs multiple cylindrical rotor frames arranged axially. Through the contact between the press-fit section and the shaft, the disc section is connected, and the extension section is extended, combined with resin integral molding or adhesive connection, the rotor frame can be made to reach the expected length without significantly increasing the mass.
This resulted in increased motor output torque, reduced rotational inertia, lower energy loss, improved assembly stability, and reduced rotor mass and assembly difficulty.
Smart Images
Figure CN121663858A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of electromechanical technology, and more particularly to a motor. Background Technology
[0002] Motors are widely used in various electromechanical equipment. For example, in recent years, robotic vacuum cleaners have been widely developed, especially those with a washing and spinning mode equipped with a drum, in which motors are widely used.
[0003] When applying motors to devices such as sweepers, the radial dimensions of the motor and the installation space are limited by the radial dimensions of the roller. In this case, it is usually necessary to increase the motor torque by increasing the height of the iron core and the height of the magnet.
[0004] In some existing structures, a laminated iron core is commonly used. However, for motors with small outer diameters and long lengths, while this method can increase the magnetic volume and thus increase motor torque, it significantly increases the mass of the motor rotor, leading to a decrease in output torque, an increase in rotational inertia, and greater energy loss. Furthermore, if the laminated iron core is too thick, the pressing force between the laminated iron core and the shaft during assembly also increases significantly, making assembly difficult, and the shaft may not be able to withstand the pressure, resulting in damage.
[0005] In some existing structures, rotor frames manufactured using a stretching method are used instead of laminated iron cores. This structure can reduce the overall weight of the rotor and the pressing force between the rotor frame and the shaft during assembly. However, the elongation of the steel plate typically used to manufacture the rotor frame is about 20%. Due to limitations in stamping and stretching capabilities, for longer motors, the stretched rotor frame cannot reach the expected height, and the motor torque cannot be increased, failing to meet performance requirements. Furthermore, for rotor frames manufactured by stretching, the length of the rotor frame makes the opening of the fully stretched rotor frame prone to deformation during rotation. This necessitates the addition of annular stamped parts between the opening and the shaft for support, resulting in higher costs.
[0006] It should be noted that the above introduction to the technical background is only for the purpose of providing a clear and complete explanation of the technical solutions of this application and facilitating understanding by those skilled in the art. It should not be assumed that these technical solutions are known to those skilled in the art simply because they have been described in the background section of this application. Summary of the Invention
[0007] To address at least one of the aforementioned problems or other similar issues, embodiments of this application provide a motor, the motor comprising:
[0008] A rotor, whose center of rotation is a central axis extending axially; and
[0009] A stator, which is radially opposed to the rotor;
[0010] The rotor includes:
[0011] A shaft, which is arranged along the central axis;
[0012] Multiple rotor holders, arranged radially outward and axially aligned on the shaft, the rotor holders being cylindrical; and
[0013] Magnets, which are disposed on the plurality of rotor frames.
[0014] In at least one embodiment, the rotor frame has:
[0015] A press-in portion that contacts and surrounds the radial outer circumferential surface of the shaft;
[0016] A disc portion, which connects to the press-in portion and is located radially outside the press-in portion; and
[0017] An extension that connects to the radially outer end of the disk and extends axially.
[0018] In at least one embodiment, the plurality of rotor frames includes a first rotor frame and a second rotor frame arranged sequentially along the axial direction.
[0019] In at least one embodiment, the plurality of rotor frames includes a first rotor frame and a second rotor frame arranged sequentially along the axial direction.
[0020] The disc portion of the first rotor frame and the disc portion of the second rotor frame are fitted together, or...
[0021] The extensions of the first rotor frame and the second rotor frame are inserted into each other.
[0022] In at least one embodiment, when the extensions of the first rotor frame and the second rotor frame are interlocked, the ends of the extensions of the first rotor frame and the ends of the extensions of the second rotor frame are interlocked in a manner that forms a convex-concave mating structure.
[0023] The gaps in the convex-concave mating structure are provided with adhesive.
[0024] In at least one embodiment, the plurality of rotor frames are connected in a resin integral molding manner.
[0025] In at least one embodiment, a plurality of integrally formed rotor frames are provided with grooves, the grooves having a disc portion of the rotor frame as the bottom and a resin component as the wall portion.
[0026] In at least one embodiment, resin is filled between the shaft and the plurality of rotor frames.
[0027] In at least one embodiment, a resin portion is formed on the inner circumferential surface of the extension of the rotor frame.
[0028] In at least one embodiment, the shaft includes a shaft body and a limiting portion that protrudes radially outward from the outer peripheral surface of the shaft body.
[0029] One beneficial effect of the embodiments of this application is that multiple cylindrical rotor frames are arranged radially outside the shaft and axially, thereby ensuring that the rotor frames reach the expected length and suppressing a significant increase in the mass of the rotor frames.
[0030] Specific embodiments of this application are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of this application can be adopted. It should be understood that the embodiments of this application are not limited in scope. Within the spirit and scope of the appended claims, embodiments of this application include many changes, modifications, and equivalents.
[0031] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments. Attached Figure Description
[0032] The elements and features described in one drawing or embodiment of this application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, similar reference numerals denote corresponding parts in several drawings and can be used to indicate corresponding parts used in more than one embodiment.
[0033] The accompanying drawings, which form part of the specification, are used to provide a further understanding of the embodiments of this application and illustrate the implementation methods of this application, together with the textual description, to explain the principles of this application. Obviously, the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without creative effort. In the drawings:
[0034] Figure 1 This is a schematic diagram of a motor according to an embodiment of this application;
[0035] Figure 2 This is a schematic diagram of an embodiment of the present application, including a first rotor frame and a second rotor frame;
[0036] Figure 3 This is another schematic diagram of the motor according to an embodiment of this application;
[0037] Figure 4This is yet another schematic diagram of a motor according to an embodiment of this application;
[0038] Figure 5 This is yet another schematic diagram of a motor according to an embodiment of this application;
[0039] Figure 6 This is yet another schematic diagram of a motor according to an embodiment of this application;
[0040] Figure 7 This is yet another schematic diagram of a motor according to an embodiment of this application;
[0041] Figure 8 This is yet another schematic diagram of a motor according to an embodiment of this application;
[0042] Figure 9 This is a schematic diagram of an embodiment of the present application, including a first rotor frame and a second rotor frame. Detailed Implementation
[0043] Referring to the accompanying drawings, the foregoing and other features of the embodiments of this application will become apparent from the following description. Specific implementations of the embodiments of this application are specifically disclosed in the following description and drawings, illustrating some implementations in which the principles of the embodiments of this application can be adopted. It should be understood that the embodiments of this application are not limited to the described implementations; rather, the embodiments of this application include all modifications, variations, and equivalents falling within the scope of the appended claims.
[0044] In embodiments of this application, the term "and / or" includes any one and all combinations of one or more of the terms listed in association. The terms "comprising," "including," "having," etc., refer to the presence of the stated features, elements, components, or assemblies, but do not exclude the presence or addition of one or more other features, elements, components, or assemblies.
[0045] In the embodiments of this application, the singular forms "a," "the," etc., may include the plural forms and should be broadly interpreted as "a kind" or "a class" rather than limited to the meaning of "an." Furthermore, the term "the" should be understood to include both the singular and plural forms unless the context explicitly indicates otherwise. Additionally, the term "according to" should be understood as "at least partially based on…," and the term "based on" should be understood as "at least partially based on…," unless the context explicitly indicates otherwise.
[0046] In the embodiments of this application, for ease of explanation, the central axis OO' of the motor or the direction parallel to it is referred to as "axial direction", the radial direction centered on the axis is referred to as "radial direction", and the direction around the axis is referred to as "circumferential direction". However, this is only for the convenience of explanation and does not limit the orientation of the motor during use and manufacturing.
[0047] Various embodiments of the present application will now be described with reference to the accompanying drawings. These embodiments are merely exemplary and are not intended to limit the scope of the present application.
[0048] This application provides a motor. Figure 1 This is a schematic diagram of a motor according to an embodiment of this application, showing the case where the motor 1 is cut along the shaft 11.
[0049] like Figure 1 As shown, the motor 1 includes a rotor 10 and a stator 20. The rotor 10 rotates around its axially extending central axis OO', and the stator 20 is radially opposite the rotor 10. The stator 20 may include a stator core and stator windings, etc., which are not limited in this application, but can be referred to in related technologies.
[0050] like Figure 1 As shown, the rotor 10 includes a shaft 11, a plurality of rotor supports 12, and magnets 13. The shaft 11 is arranged along the central axis OO', and the plurality of rotor supports 12 are arranged radially outside the shaft 11 and axially. The rotor supports 12 are cylindrical, and the magnets 13 are arranged on the plurality of rotor supports 12. The number of magnets 13 may be multiple; this application does not limit this, but relevant technologies can be consulted.
[0051] Thus, multiple cylindrical rotor frames 12 are arranged radially outside the shaft 11 and axially, thereby ensuring that the rotor frames reach the expected length while suppressing a significant increase in the mass of the rotor frames.
[0052] For example, even if the axial length of the motor is long, such as when the elongation of the steel plate of a single rotor frame reaches its limit and still cannot meet the length requirement, the embodiments of this application, by using multiple rotor frames arranged axially, allow the overall length of the rotor frame to reach any expected length without the elongation of the steel plate used to manufacture the rotor frame to reach its limit. This ensures that the motor has sufficient output torque to meet performance requirements. Furthermore, using a cylindrical rotor frame, avoiding structures like laminated iron cores, can suppress the increase in the overall mass of the rotor frame, reducing the impact on the motor's output torque. It can also suppress the increase in rotational inertia and energy loss, ensuring motor performance. In other words, using a multi-segment rotor frame can significantly reduce rotor mass, decrease rotational inertia, enable fast motor start-up, and minimize energy loss.
[0053] The motor in the embodiments of this application can be various types of motors, for example... Figure 1The motor 1 shown is an internal rotor motor, but this application is not limited to this. For example, it can also be an external rotor motor. For instance, an external rotor motor may include a cylindrical rotor frame and a rotating shaft disposed at the center of the rotor frame. Multiple magnets can be disposed on the inner circumferential surface of the rotor frame. In this case, the rotor frame of the external rotor motor can be composed of multiple rotor frames arranged axially. That is, in any structure that uses a rotor frame to house magnets, the rotor frame of the embodiment of this application can be used to achieve the goal of ensuring that the rotor frame reaches the expected length while suppressing a significant increase in the mass of the rotor frame.
[0054] like Figure 1 As shown, in one or more embodiments, for any rotor frame 12, the rotor frame 12 has a press-in portion 14, a disc portion 15, and an extension portion 16. The press-in portion 14 contacts and surrounds the radially outer peripheral surface of the shaft 11, the disc portion 15 is connected to the press-in portion 14 and is located radially outside the press-in portion 14, and the extension portion 16 is connected to the radially outer end of the disc portion 15 and extends axially.
[0055] This ensures the installability and operational stability of the rotor frame 12. For example, during assembly, the rotor frame can be pressed into the shaft 11 by applying a force to the disc portion 15 to move the pressing portion 14 along the shaft 11, thereby ensuring installability. For example, the thickness of the disc portion 15 can be relatively large; for example, the thickness (axial dimension) of the disc portion 15 can be greater than the thickness (radial dimension) of the pressing portion 14 and / or the thickness (radial dimension) of the extension portion 16. In addition, by providing the pressing portion 14, the contact area between the rotor frame 12 and the outer peripheral surface of the shaft can be ensured, thereby improving the stability of the rotor frame during operation. For example, the axial dimension of the pressing portion 14 can be greater than the axial dimension of the disc portion 15, thereby ensuring the contact area between the pressing portion 14 and the shaft 11.
[0056] In the embodiments of this application, such as Figure 1 As shown, an axially recessed recess 17 can be formed in the portion of the disc portion 15 near the press-in portion 14. The recess 17 can be formed along the entire circumference or multiple recesses can be provided at intervals along the entire circumference. Thus, the recess 17 can absorb the stress on the rotor frame during assembly and / or operation, and prevent damage.
[0057] In this embodiment of the application, the number of rotor frames 12 is multiple, for example, Figure 1 The diagram shows two rotor frames 12 arranged axially. However, this application is not limited to this; the number of rotor frames 12 can also be three or more. This application does not impose any restrictions on this, as long as the overall length of the multiple rotor frames arranged axially meets the overall length requirements of the motor.
[0058] like Figure 1As shown, in one or more embodiments, the plurality of rotor frames include a first rotor frame 12a and a second rotor frame 12b arranged sequentially along the axial direction. This increases the overall axial length of the rotor frame. In other words, by combining two stamped rotor frames together, the rotor weight remains almost unchanged while maintaining stamping formability, significantly improving motor torque and reducing energy loss. Furthermore, by merging two rotor frames, the difficulty of stamping is reduced, and the stamping height of a single rotor frame is greatly reduced, thus improving the deformation resistance of the opening.
[0059] In the embodiments of this application, there are various ways to arrange the first rotor frame 12a and the second rotor frame 12b. For example, the disc portion of the first rotor frame 12a and the disc portion of the second rotor frame 12b can be attached together, or the extension portion of the first rotor frame 12a and the extension portion of the second rotor frame 12b can be inserted into each other. This application does not limit this.
[0060] For example, in one or more embodiments, such as Figure 1 As shown, the extension 16a of the first rotor frame 12a and the extension 16b of the second rotor frame 12b are interlocked. This interlocking of the extensions prevents deformation of the rotor frame openings and improves the strength of the rotor frame.
[0061] In one or more embodiments, when the extension 16a of the first rotor frame 12a and the extension 16b of the second rotor frame 12b are interlocked, the ends of the extension 16a of the first rotor frame 12a and the ends of the extension 16b of the second rotor frame 12b are interlocked in a manner that forms a concave-convex fit structure. This ensures the connection strength between the first rotor frame and the second rotor frame.
[0062] In this application embodiment, the specific implementation of the concave-convex mating structure formed at the end of the extension 16a of the first rotor frame 12a and the end of the extension 16b of the second rotor frame 12b is not limited. For example, as shown in the embodiment... Figure 1 As shown, the ends of the extension 16a of the first rotor frame 12a and the extension 16b of the second rotor frame 12b can form mutually mating steps, but this application is not limited to this. For example, a groove can be formed at the end of the extension 16a and a protrusion that mates with the groove can be formed at the end of the extension 16b, and / or a protrusion can be formed at the end of the extension 16a and a groove that mates with the protrusion can be formed at the end of the extension 16b. This application does not limit this.
[0063] In one or more embodiments, an adhesive may be provided in the gap between the convex-concave mating structure formed at the end of the extension 16a of the first rotor frame 12a and the end of the extension 16b of the second rotor frame 12b. This further enhances the connection strength between the first rotor frame and the second rotor frame.
[0064] For example, Figure 2 This is a schematic diagram of an embodiment of the present application, including a first rotor frame and a second rotor frame, showing a portion of the motor 1.
[0065] like Figure 2 As shown, an adhesive 18 is provided in the gap of the convex-concave mating structure formed at the end of the extension 16a of the first rotor frame 12a and the end of the extension 16b of the second rotor frame 12b. In this embodiment, a gap of a predetermined size can be formed by setting the size of the end of the extension 16a of the first rotor frame 12a and the end of the extension 16b of the second rotor frame 12b. Alternatively, adhesive can be applied to the end of the rotor frame to provide adhesive in the gap of the convex-concave mating structure. This application does not limit this. In addition, the gap can be formed along the entire circumference.
[0066] Figure 3 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor cut along shaft 11.
[0067] In one or more embodiments, such as Figure 3 As shown, the disc portion 15a of the first rotor frame 12a and the disc portion 15b of the second rotor frame 12b are bonded together. Therefore, by bonding the disc portions together, the installability of the rotor frame can be improved. In this embodiment, an adhesive can also be applied between the disc portion 15a and the disc portion 15b to enhance the overall strength of the rotor frame.
[0068] In the above Figures 1 to 3 The illustration shows an embodiment where multiple rotor frames are replaced by two rotor frames, but this application is not limited thereto.
[0069] For example, Figure 4 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor cut along shaft 11.
[0070] like Figure 4As shown, the rotor frame includes three rotor frames 12, arranged from end O to end O' in the axial direction. Adjacent rotor frames 12 are connected sequentially by mating discs and inserting extensions. However, this application is not limited to this; for example, adjacent rotor frames 12 can also be connected sequentially by inserting extensions and mating discs from end O to end O' in the axial direction. This application does not limit this. Furthermore, for cases involving four or more rotor frames, the axial arrangement can be achieved with reference to the above description, which will not be described in detail here.
[0071] In this embodiment, the length of any rotor frame among the multiple rotor frames is not limited. For example, any two rotor frames among the multiple rotor frames can have the same length. Figure 1 and Figure 3 The image shows two rotor frames of the same length.
[0072] However, this application is not limited to this. Figure 5 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor cut along shaft 11.
[0073] like Figure 5 As shown, when the rotor includes two rotor frames 12, the lengths of the two rotor frames can be different, such as... Figure 5 The length of the rotor frame 12 near the axial end O is greater than the length of the rotor frame 12 near the axial end O'. Therefore, the first rotor frame and the second rotor frame are designed asymmetrically, which can reduce the molding difficulty and achieve mutual support and fixation between the first rotor frame and the second rotor frame.
[0074] In addition, Figure 4 In the embodiment of the three rotor frames shown, the length of the rotor frame located in the middle position is greater than the length of the rotor frames located at both ends. However, this application is not limited to this. The length of the rotor frame located in the middle position can be equal to or less than the length of the rotor frames located at both ends. The lengths of the rotor frames at both ends can be the same or different.
[0075] Figures 1 to 5 The illustration shows an embodiment where multiple rotor frames 12 are connected and fixed by press-fit shafts 11, but this application is not limited to this. For example, multiple rotor frames 12 can be connected by integral resin molding. This not only increases the overall length of the rotor frame but also significantly reduces the rotor mass. For example, when multiple rotor frames are connected by integral resin molding, the rotor frame does not need to have press-fit parts. Furthermore, since the disc portion does not need to bear the press-fit force during assembly, the thickness of the disc portion can be smaller. Additionally, the density of the resin material relative to its own weight is much lower than that of the steel used to manufacture the rotor frame, thereby significantly reducing the overall mass of the rotor frame. In the embodiments of this application, the specific arrangement of the integrally molded resin parts is not limited; examples are given below.
[0076] Figure 6 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor cut along shaft 11.
[0077] like Figure 6 As shown, rotor frame 12c and rotor frame 12d are connected by integral resin molding. For example, in the case of stamping rotor frames 12c and 12d, rotor frames 12c, 12d and shaft 11 are placed in a mold and fixed, and then thermoforming resin is injected to integrally mold rotor frames 12c and 12d. Resin can be disposed between rotor frames 12c and 12d, or the rotor frames 12c and 12d can be connected by forming a resin part. This can increase the overall length of the rotor frame, reduce the weight of the rotor, and ensure the overall strength of the rotor. In the embodiments of this application, the position and shape of the resin part are not specifically limited, as long as the connection between the rotor frames can be ensured.
[0078] like Figure 6 As shown, in one or more embodiments, a plurality of integrally molded rotor frames are formed with grooves 19, the grooves 19 having the disc portions (15c, 15d) of the rotor frame as the bottom and the resin component 30 as the wall portion. Thus, by forming the groove 19, the dynamic balance of the rotor can be further corrected, reducing motor vibration noise. In such an embodiment, the resin component 30 is formed around the mating disc portions (15c, 15d) of the rotor frame to connect rotor frame 12c and rotor frame 12d together, for example, formed at both axial ends of the mating disc portions (15c, 15d). It is worth noting that the grooves 19 in the resin component 30 are not a necessary structure.
[0079] In the embodiments of this application, various other shapes besides grooves can be formed by integral resin molding, such as impellers. This enables heat dissipation from the motor interior during motor rotation, reducing internal motor heat generation and improving motor efficiency.
[0080] In one or more embodiments, the space between the shaft and the plurality of rotor supports is filled with resin, such as Figure 6 As shown, resin, referred to herein as the first resin section 31, is filled between the shaft 11 and the rotor holders 12c and 12d. This allows for fixation between the rotor holder and the shaft without the need for a rotor holder molding press-in section. Furthermore, since no pressing-in operation between the rotor holder and the shaft is required, the thickness of the disc portion can be reduced, thereby effectively improving the strength of the rotor holder without significantly increasing its weight. It is worth noting that resin molding can also be performed integrally after the rotor holder is pressed into the shaft via the press-in section, further enhancing the overall strength of the rotor.
[0081] Figure 7 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor cut along shaft 11.
[0082] like Figure 7 As shown, in one or more embodiments, a resin portion, referred to herein as the second resin portion 32, is formed on the inner circumferential surface of the extension of the rotor frame. This allows for further improvement of the rotor frame's strength without significantly increasing its weight. In the embodiments of this application, the axial length of the second resin portion 32 is less than or equal to the overall axial length of the rotor frame, i.e., the axial length of the magnet. Therefore, while preventing interference between the second resin portion 32 and other components, the strength of the rotor frame can be maximized, thereby improving the stability of the motor during operation.
[0083] Furthermore, the specific shape of the integrally molded resin can be implemented in other ways.
[0084] For example, Figure 8 This is another schematic diagram of a motor according to an embodiment of this application, showing the motor being cut along shaft 11.
[0085] like Figure 8 As shown, the first rotor frame 12a and the second rotor frame 12b are connected by an interlocking manner. A resin portion, referred to herein as the third resin portion 33, is filled in the space between the first rotor frame 12a, the second rotor frame 12b, and the shaft 11. Figure 8 As shown, the third resin portion can cover the entire rotor frame from both axial ends, thereby further enhancing the overall strength of the rotor frame and ensuring the stability of the motor during operation. It is worth noting that when the first rotor frame 12a and the second rotor frame 12b are connected by a disc-to-disc bonding manner, the space between the first rotor frame 12a and the second rotor frame 12b and the shaft 11 can also be filled with resin portion, thereby further enhancing the overall strength of the rotor frame.
[0086] In this embodiment of the application, components for positioning the rotor frame may be formed on the shaft 11, for example, Figure 9 This is a schematic diagram of an embodiment of the present application, including a first rotor frame and a second rotor frame, showing a portion of the motor 1.
[0087] like Figure 9 As shown, the shaft 11 includes a shaft body 111 and a limiting portion 112, which protrudes radially outward from the outer peripheral surface of the shaft body 111. Therefore, by providing the limiting portion 112, when, for example... Figure 9 When the first rotor frame 12a is pressed into the shaft 11 to achieve assembly, the pressing position of the first rotor frame 12a can be defined, thereby improving the accuracy of assembly.
[0088] also, Figure 9The limiting part 112 at one end of the axial direction is shown only, but this application is not limited to this. The limiting part can also be provided at the other end of the axial direction. In addition, the limiting part can also be provided at other positions in the axial direction, such as in the middle. This application does not limit this and can choose according to actual needs.
[0089] This application also provides an electrical product, which includes a motor 1. In this application embodiment, the electrical product may include, but is not limited to, a sweeping machine.
[0090] It is worth noting that the above Figures 1 to 9 The motor described in this application is merely illustrative, but the application is not limited thereto. Further details regarding the various structures or components can be found in related technologies, and additional features may be added. Figures 1 to 9 Structures or components not shown, or reduced Figures 1 to 9 One or more structures or components in it. Figures 1 to 9 For any components or elements not specifically specified herein, please refer to relevant technologies; this application does not impose any limitations on them.
[0091] The embodiments of this application have been described above with reference to specific implementation methods. However, those skilled in the art should understand that these descriptions are exemplary and not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make various modifications and variations to the embodiments of this application based on the spirit and principles of the embodiments, and these modifications and variations are also within the scope of the embodiments of this application.
[0092] Preferred embodiments of the present application have been described above with reference to the accompanying drawings. Many features and advantages of these embodiments are apparent from this detailed description, and therefore the appended claims are intended to cover all such features and advantages falling within the true spirit and scope of these embodiments. Furthermore, since many modifications and alterations will readily occur to those skilled in the art, the embodiments of the present application are not intended to be limited to the precise structures and operations illustrated and described, but rather to encompass all suitable modifications and equivalents falling within their scope.
Claims
1. A motor, the motor comprising: The rotor has its center of rotation around a central axis extending along the axial direction. as well as A stator, which is radially opposed to the rotor; The rotor is characterized in that it comprises: A shaft, which is arranged along the central axis; Multiple rotor supports, arranged radially outward and axially aligned on the shaft, wherein the rotor supports are cylindrical; and Magnets, which are disposed on the plurality of rotor frames.
2. The motor according to claim 1, characterized in that, The rotor frame has: A press-in portion that contacts and surrounds the radial outer circumferential surface of the shaft; A disc portion, which connects to the press-in portion and is located radially outside the press-in portion; and An extension that connects to the radially outer end of the disk and extends axially.
3. The motor according to claim 1, characterized in that, The plurality of rotor frames includes a first rotor frame and a second rotor frame arranged sequentially along the axial direction.
4. The motor according to claim 2, characterized in that, The plurality of rotor frames includes a first rotor frame and a second rotor frame arranged sequentially along the axial direction. The disc portion of the first rotor frame and the disc portion of the second rotor frame are fitted together, or... The extensions of the first rotor frame and the second rotor frame are inserted into each other.
5. The motor according to claim 4, characterized in that, When the extensions of the first rotor frame and the second rotor frame are interlocked, the ends of the extensions of the first rotor frame and the ends of the extensions of the second rotor frame are interlocked in a manner that forms a concave-convex fit structure. The gaps in the convex-concave mating structure are provided with adhesive.
6. The motor according to claim 1, characterized in that, The plurality of rotor frames are connected by a single resin molding process.
7. The motor according to claim 6, characterized in that, Multiple rotor frames integrally formed have grooves, with the disc portion of the rotor frame as the bottom and the resin component as the wall portion.
8. The motor according to claim 6, characterized in that, Resin is filled between the shaft and the plurality of rotor frames.
9. The motor according to claim 6, characterized in that, A resin portion is formed on the inner circumferential surface of the extension of the rotor frame.
10. The motor according to any one of claims 1 to 9, characterized in that, The shaft includes a shaft body and a limiting part, the limiting part protruding radially outward from the outer peripheral surface of the shaft body.