Rotor assembly, motor and equipment

Abstract

The utility model discloses a rotor assembly, a motor and equipment, the rotor assembly comprises a rotor disc, a permanent magnet assembly and a fixing assembly, the permanent magnet assembly comprises a plurality of permanent magnets, and the plurality of permanent magnets are uniformly arranged on the rotor disc at intervals around the axis of the rotor disc; the fixing assembly is installed on the rotor disc, and at least part of the fixing assembly is located on the side face, away from the rotor disc, of the permanent magnet assembly so that the permanent magnet assembly can be fixed between the fixing assembly and the rotor disc. According to the rotor assembly and the fixing assembly provided by the utility model, the permanent magnets can have better stability, the rotor assembly can bear larger torque output, the application range of the motor can be widened, and the overall performance and reliability of the motor can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to axial magnetic field motor technical field especially is rotor assembly, motor and equipment. BACKGROUND

[0002] In the field of motor, the magnet fixing mode of the traditional motor rotor has a significant impact on the performance of the motor. In the related technology, bolts are used to fix the rotor magnet, but under high-speed working conditions, the bolts are prone to looseness due to the action of centrifugal force and other factors, which leads to unstable fixation of the magnet and intensifies vibration of the motor during operation, thereby affecting the precision and efficiency of the motor and possibly causing safety hazards. At the same time, the bolt pre-tightening method limits the torque-carrying capacity of the rotor, making it difficult to meet the requirements of some high-torque application scenarios. With the development of industrial technology, there is an increasing demand for stable operation of the motor at high speed and large torque carrying capacity. SUMMARY

[0003] The utility model aims at at least one of the technical problems existing in the prior art. To this end, one object of the utility model is to provide a rotor assembly, which can make the permanent magnet have good stability, make the rotor assembly be able to withstand greater torque output, widen the application range of the motor, and improve the overall performance and reliability of the motor.

[0004] The rotor assembly according to the utility model embodiment comprises: a rotor disc; a permanent magnet assembly comprising a plurality of permanent magnets, the plurality of permanent magnets being arranged on the rotor disc uniformly spaced around an axis of the rotor disc; and a fixing assembly installed on the rotor disc, the fixing assembly being at least partially located on a side of the permanent magnet assembly away from the rotor disc to fix the permanent magnet assembly between the fixing assembly and the rotor disc.

[0005] According to the rotor assembly of the utility model, the first fixing member and the second fixing member are arranged on the rotor disc, and the first fixing member and the second fixing member are fixed in the radial direction from the inner periphery and the outer periphery of the permanent magnet respectively, so that the stability of the permanent magnet is good. The stable fixing structure formed by the first fixing member and the second fixing member can withstand greater torque output, widen the application range of the motor, and improve the overall performance and reliability of the motor.

[0006] In addition, the rotor assembly according to the utility model can also have the following additional technical features:

[0007] In some embodiments of the utility model, the fixing assembly comprises: at least one first fixing member installed on the rotor disc, the first fixing member fixing the inner periphery of at least one of the permanent magnets.

[0008] In some embodiments of the utility model, first installation groove is arranged on the rotor disc, first installation groove is located at the radial inner side of permanent magnet assembly, first fixing piece is installed in first installation groove, and part is pressed tightly on the side of permanent magnet by first installation groove.

[0009] In some embodiments of the utility model, first installation groove is annular around the axis of rotor disc.

[0010] In some embodiments of the utility model, rotor assembly further includes at least one first limiting piece, first limiting piece is installed on rotor disc, first limiting piece is arranged at the opening of first installation groove, and is used for limiting the position of first fixing piece in radial direction.

[0011] In some embodiments of the utility model, first limiting piece is located between two adjacent permanent magnets.

[0012] In some embodiments of the utility model, first fixing piece is arc around the axis of rotor disc.

[0013] In some embodiments of the utility model, rotor disc has first annular part, first annular part protrudes from the side of rotor disc in axial direction, and first installation groove is arranged on the side of first annular part towards permanent magnet.

[0014] In some embodiments of the utility model, fixed assembly includes at least one second fixing piece, second fixing piece is installed on rotor disc, and in radial direction, second fixing piece fixes the outer periphery of at least one permanent magnet.

[0015] In some embodiments of the utility model, second installation groove is arranged on rotor disc, second installation groove is located at the radial outer side of permanent magnet assembly, second fixing piece is installed in second installation groove, and part is pressed tightly on the side of permanent magnet by second installation groove.

[0016] In some embodiments of the utility model, second installation groove is annular around the axis of rotor disc.

[0017] In some embodiments of the utility model, rotor assembly further includes at least one second limiting piece, second limiting piece is installed on rotor disc, second limiting piece is arranged at the opening of second installation groove, and is used for limiting the position of second fixing piece in radial direction.

[0018] In some embodiments of the utility model, second limiting piece is located between two adjacent permanent magnets.

[0019] In some embodiments of the utility model, the second fixing part is arc around the axis of the rotor disc.

[0020] In some embodiments of the utility model, the rotor disc has a second annular part, the second annular part protrudes from the side surface of the rotor disc in the axial direction, and the second mounting groove is arranged on the side of the second annular part facing the permanent magnet.

[0021] In some embodiments of the utility model, the rotor disc is provided with rotor grooves, the rotor grooves are provided in plurality, the plurality of permanent magnets are installed in the rotor grooves one by one, the rotor groove is a through groove penetrating the rotor disc in the axial direction, the two side surfaces of the rotor disc in the axial direction are a first side surface and a second side surface respectively, the fixing assembly comprises: a third fixing part and a fourth fixing part, the third fixing part is installed on the first side surface of the rotor disc, the fourth fixing part is fixed on the second side surface of the rotor disc, and in the axial direction, the third fixing part and the fourth fixing part are fixed on the two sides of at least one permanent magnet respectively.

[0022] In some embodiments of the utility model, the third fixing part and the fourth fixing part are respectively fixed on the inner periphery of the two sides of at least one permanent magnet, and / or the third fixing part and the fourth fixing part are respectively fixed on the outer periphery of the two sides of at least one permanent magnet.

[0023] In some embodiments of the utility model, the first side surface is provided with a third mounting groove for installing the third fixing part, and the second side surface is provided with a fourth mounting groove for installing the fourth fixing part.

[0024] In some embodiments of the utility model, the rotor disc is provided with a through hole penetrating the rotor disc in the axial direction, and the rotor further comprises a limiting part, the limiting part is arranged in the through hole and is used for limiting the positions of the third fixing part and the fourth fixing part.

[0025] In some embodiments of the utility model, the limiting part comprises a rivet, a screw or a bolt.

[0026] In some embodiments of the utility model, the inner periphery of the permanent magnet is provided with a first sunken platform matched with the fixing assembly, and / or the outer periphery of the permanent magnet is provided with a second sunken platform matched with the fixing assembly.

[0027] In some embodiments of the utility model, the rotor assembly further comprises a rotor shaft, the rotor disc has a shaft hole, and the rotor shaft is arranged in the shaft hole.

[0028] In some embodiments of the utility model, the rotor shaft and the rotor disc are an integral part formed integrally.

[0029] In some embodiments of the utility model, the rotor assembly further includes a packaging piece, and the permanent magnet assembly is packaged in the packaging piece.

[0030] The utility model discloses a motor with the rotor assembly of the above-mentioned embodiment.

[0031] The motor according to the utility model embodiment comprises: a motor shell; a stator assembly fixed in the motor shell; and a rotor assembly rotatably arranged in the motor shell.

[0032] According to the motor of the utility model, through the rotor assembly of the above-mentioned embodiment, the rotor assembly structure is stable, the permanent magnet is effectively fixed, can bear high centrifugal force when the motor is running, reduces the permanent magnet displacement and the risk of loosening, reduces vibration and noise, improves the operation stability. Further can improve the reliability, efficiency and durability of the motor, and expand the application range of the motor.

[0033] In some embodiments of the utility model, the motor shell comprises a first shell body and a second shell body, the first shell body and the second shell body are detachably connected in the axial direction, the stator assembly comprises a first winding coil and a second winding coil, the first winding coil is detachably installed on the first shell body, the second winding coil is detachably installed on the second shell body, and in the axial direction, the rotor assembly is located between the first winding coil and the second winding coil.

[0034] In some embodiments of the utility model, the first winding coil and the second winding coil both comprise: an iron core base, which is detachably connected with the motor shell; an iron core stand, which is located on one side of the iron core base, and a plurality of iron core stands are uniformly and spaced apart around the axis; and a coil, which is wound around the outer circumferential side of the iron core stand, and the wiring end of the coil is located on the radial outer side of the iron core stand.

[0035] In some embodiments of the utility model, an oil inlet and an oil outlet are arranged on the motor shell, and the oil inlet and the oil outlet are arranged on the two sides of the motor shell in a first direction, wherein the oil inlet comprises a first oil inlet and a second oil inlet, the first oil inlet and the second oil inlet are spaced apart along a second direction, and / or the oil outlet comprises a first oil outlet and a second oil outlet, the first oil outlet and the second oil outlet are spaced apart along the second direction, and the first direction and the second direction are perpendicular to each other.

[0036] In some embodiments of the utility model, the motor further includes a plug, the plug is used for plugging one of the first oil inlet and the second oil inlet, and / or the plug is used for plugging one of the first oil outlet and the second oil outlet.

[0037] In some embodiments of the utility model, the motor further includes a junction box, the junction box is connected with the motor shell, and in the second direction, the junction box is located between the first oil inlet and the second oil inlet.

[0038] In some embodiments of the utility model, the motor shell includes a first shell and a second shell, the first shell and the second shell are detachably connected in the axial direction, the junction box includes a first box body and a second box body which are detachably connected, the first box body and the first shell are an integral piece formed integrally, and the second box body and the second shell are an integral piece formed integrally.

[0039] The application also provides a device, which includes a motor, and the motor has the same or similar technical features or effects as the motor in the above embodiments.

[0040] Additional aspects and advantages of the utility model will be partially given in the following description, some will become obvious from the following description, or be understood through the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0041] The above and / or additional aspects and advantages of the utility model will become apparent and more readily appreciated from the following description of the embodiments, with reference to the following drawings, in which:

[0042] Figure 1 It is a structure view of a rotor assembly according to the utility model embodiment.

[0043] Figure 2 It is an explosion view of a rotor assembly according to the utility model embodiment.

[0044] Figure 3 It is a sectional view of a rotor assembly according to the utility model embodiment.

[0045] Figure 4 It is Figure 3 The enlarged view of area A in figure 6.

[0046] Figure 5 It is Figure 3 The enlarged view of area B in figure 6.

[0047] Figure 6 It is a structure schematic view of a motor according to the utility model embodiment from one angle.

[0048] Figure 7is another angle structure schematic view of the motor according to the embodiment of the utility model.

[0049] Figure 8 is the explosion drawing of the motor according to the embodiment of the utility model.

[0050] Figure 9 is the structure schematic view of the stator assembly of the motor according to the embodiment of the utility model.

[0051] Figure 10 is the structure schematic view of the iron core base and iron core stand according to the embodiment of the utility model.

[0052] Reference signs:

[0053] 10, rotor assembly;

[0054] 1, rotor disc;11, first installation slot;12, second installation slot;13, first annular part;14, second annular part;15, rotor slot;16, first through hole;17, second through hole;

[0055] 2, permanent magnet assembly;21, permanent magnet;211, first sink;212, second sink;

[0056] 3, fixed assembly;31, first fixed part;32, second fixed part;

[0057] 41, first limiting part;42, second limiting part;

[0058] 5, rotor shaft;

[0059] 100, motor;

[0060] 20, motor shell;61, first shell;62, second shell;63, first oil inlet;64, second oil inlet;65, first oil outlet;66, second oil outlet;

[0061] 30, stator assembly;71, first winding coil;72, second winding coil;73, iron core base;74, iron core stand;75, coil;

[0062] 40, junction box;81, first box body;82, second box body;

[0063] 91, rotor bearing;92, encoder;X, first direction;Y, second direction. DETAILED DESCRIPTION

[0064] The embodiments of the present application are described below in detail, examples of which are shown in the drawings, wherein the same or similar notations represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by reference to the drawings are exemplary only, and are used only for explaining the present application, and cannot be understood as a limitation of the present application.

[0065] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited by "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0066] In the description of the present application, it should be noted that, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0067] Reference is made below to Figures 1-5 The rotor assembly 10 according to an embodiment of the present application is described.

[0068] As Figures 1-2 shown, the rotor assembly 10 according to an embodiment of the present application includes a rotor disc 1, a permanent magnet assembly 2 and a fixing assembly 3, the permanent magnet assembly 2 includes a plurality of permanent magnets 21, the plurality of permanent magnets 21 are arranged on the rotor disc 1 uniformly spaced apart around an axis of the rotor disc 1, the fixing assembly 3 is mounted on the rotor disc 1, the fixing assembly 3 is at least partially located on a side of the permanent magnet assembly 2 away from the rotor disc 1, so as to fix the permanent magnet assembly 2 between the fixing assembly 3 and the rotor disc 1.

[0069] That is, the application fixes the permanent magnet assembly 2 between the fixing assembly 3 and the rotor disc 1 through the fixing assembly 3, discards the traditional loose bolt pre-tightening mode, effectively solves the problem of unstable magnet fixation caused by centrifugal force under high-speed operation, greatly reduces the vibration amplitude of the motor during operation, guarantees the high precision and high efficiency of the motor operation, and eliminates potential safety hazards. Secondly, by getting rid of the limitation of bolt pre-tightening, the structural stability of the rotor assembly 10 is greatly improved, the torque carrying capacity is significantly enhanced, and the application scene with high torque requirement can be easily coped with, thereby widening the application range of the motor. Furthermore, the permanent magnets 21 are uniformly and spacedly arranged around the axis of the rotor disc 1, cooperate with the stable fixing assembly, optimize the internal magnetic field distribution of the motor, further improve the motor performance, and help the efficient and reliable operation of various equipment in industrial production.

[0070] Therefore, according to the rotor assembly 10 of the embodiment of the utility model, the permanent magnet assembly 2 is fixed between the fixing assembly 3 and the rotor disc 1 through the fixing assembly 3, the fixing effect of the permanent magnet assembly 2 can be improved, the high precision and high efficiency of the motor operation can be better guaranteed, the motor torque can be improved, the application range of the motor can be widened, and the motor performance is also improved.

[0071] In some embodiments of the utility model, the two sides of the rotor disc 1 in the axial direction are respectively a first side and a second side, and the fixing assembly 3 comprises: at least one first fixing piece 31, the first fixing piece 31 is installed on the first side of the rotor disc 1, and the first fixing piece 31 fixes the inner periphery of at least one permanent magnet 21.

[0072] Exemplarily, the first fixing piece 31 is fixed on the inner periphery of one permanent magnet 21, therefore, the first fixing piece 31 can be provided with multiple, and the multiple first fixing pieces 31 and the multiple permanent magnets 21 correspond one by one.

[0073] Exemplarily, the first fixing piece 31 is fixed on the inner periphery of multiple permanent magnets 21, and the multiple can be two or more than two, which is not limited by the application, for example, the first fixing piece 31 can simultaneously fix the inner peripheries of all permanent magnets 21.

[0074] In the above example, the first fixing piece 31 is fixed from the inner periphery of the permanent magnet 21. Through this layout, the centrifugal force received by the permanent magnet 21 can be effectively balanced and constrained during the operation of the motor 100. The first fixing piece 31 limits the inward displacement tendency of the permanent magnet 21, ensures that the permanent magnet 21 maintains a stable positional relationship when rotating at high speed, and will not be loose or displaced due to centrifugal force.

[0075] In some embodiments of the utility model, as Figures 2-3As shown, the rotor disc 1 is provided with a first installation groove 11, the first installation groove 11 is located at the radial inner side of the permanent magnet assembly 2, the first fixing member 31 is installed in the first installation groove 11 and partially extends out of the first installation groove 11 and is pressed against the side surface of the permanent magnet 21.

[0076] That is, the first installation groove 11 provides a better positioning and stable installation basis for the first fixing member 31, so that the first fixing member 31 is not easy to displace during high-speed rotation, thereby facilitating the permanent magnet 21 to be reliably fixed and better enhancing the stability of the rotor assembly 10 structure. Secondly, the structure design that the first fixing member 31 partially extends out and is pressed against the side surface of the permanent magnet 21 can effectively constrain the permanent magnet 21, which not only limits the movement of the permanent magnet 21 in the radial direction, but also prevents the axial movement of the permanent magnet 21 to a certain extent, further improving the firmness of the permanent magnet 21 fixation. Furthermore, this layout mode is beneficial to optimize the space utilization inside the rotor disc 1, so that the cooperation between the components is more compact and reasonable, unnecessary space waste is reduced, and the assembly process in the production and manufacturing process is facilitated, the production efficiency is improved and the production cost is reduced.

[0077] In some embodiments of the utility model, as shown in Figure 2 The first installation groove 11 is annular around the axis of the rotor disc 1.

[0078] That is, the first installation groove 11 can be configured as an annular groove structure, and the annular groove structure enables the first fixing member 31 to continuously fix the permanent magnet 21 in the circumferential direction, forming a complete and uniform constraint ring. When running at high speed, this continuous constraint can more stably resist the centrifugal force of the permanent magnet 21, effectively prevent the permanent magnet 21 from loosening or displacing due to uneven local stress, and better improve the stability and reliability of the rotor assembly 10. In addition, from the manufacturing point of view, the annular groove is convenient for processing and forming, which can reduce the processing difficulty and cost. At the same time, in the assembly process, the cooperation of the annular first installation groove 11 and the arc-shaped first fixing member 31 is more natural and smooth, which helps to improve the assembly efficiency and quality and ensure the stable performance of the motor 100.

[0079] In some embodiments of the utility model, as shown in Figure 2 And Figure 3 As shown, the rotor assembly 10 further comprises at least one first limiting member 41, the first limiting member 41 is installed on the rotor disc 1, the first limiting member 41 is arranged at the opening of the first installation groove 11, and is used for limiting the position of the first fixing member 31 in the radial direction.

[0080] That is, the first limiting piece 41 limits the radial position of the first fixing piece 31, which can effectively prevent the first fixing piece 31 from being radially displaced due to centrifugal force during high-speed operation, thereby better ensuring that the permanent magnet 21 is stably fixed on the rotor disc 1, greatly reducing the vibration and noise of the motor 100 during operation, and ensuring the smooth operation of the motor 100. In addition, this limiting design strengthens the structural strength of the entire rotor assembly 10, making the connection between the components more compact and stable, and even in complex and variable working conditions, the integrity of the rotor structure can be maintained. In addition, during the long-term use of the motor 100, the first limiting piece 41 can resist the risk of loosening of the first fixing piece 31 due to environmental factors or mechanical fatigue, prolonging the service life of the motor 100, reducing maintenance costs, improving the overall reliability and durability of the motor 100, and providing a strong guarantee for the continuous and efficient operation of the motor 100.

[0081] When the first limiting piece 41 is provided with a plurality of first limiting pieces 41, the fixing effect of the first fixing piece 31 and the second fixing piece 32 can be further improved.

[0082] In some embodiments of the utility model, the first limiting piece 41 is located between two adjacent permanent magnets 21. Thus, the gap between the two adjacent permanent magnets 21 can be better utilized to accommodate the first limiting piece 41, avoiding the occupation of excessive space of the rotor disc 1, and making the rotor structure more compact and efficient.

[0083] In some embodiments of the utility model, as shown in Figure 2 The first fixing piece 31 is arc-shaped around the axis of the rotor disc 1.

[0084] Exemplarily, the arc-shaped first fixing piece 31 is provided with one, and one arc-shaped first fixing piece 31 can simultaneously fix the inner periphery of all permanent magnets 21.

[0085] Exemplarily, the arc-shaped first fixing piece 31 can also be provided with a plurality of first fixing pieces 31, and the plurality of first fixing pieces 31 are fixed one by one on the inner periphery of the plurality of permanent magnets 21. Of course, one first fixing piece 31 can also be fixed on the inner periphery of two or more permanent magnets 21, and the present application does not make any limitation.

[0086] In the above examples, the arc-shaped first fixing member 31 can better fit the arc-shaped arrangement of the permanent magnets 21, reduce space occupation, make the overall structure of the rotor assembly 10 more compact and reasonable, and be conducive to the miniaturization design of the motor 100. When the first fixing member 31 can simultaneously fix at least two permanent magnets 21, the overall integrity constraint on the permanent magnet assembly 2 can be effectively enhanced, the relative position stability of the permanent magnets 21 during high-speed rotation can be improved, and the risk of failure caused by loosening of individual permanent magnets 21 can be reduced. Furthermore, this design facilitates installation and disassembly, whether in the production and manufacturing link of the motor 100 or in the subsequent maintenance process, can reduce the operation difficulty and time cost. Moreover, the arc-shaped fixing member is more uniform in stress distribution, can better withstand and disperse the centrifugal force generated by the high-speed rotation of the permanent magnets 21, further improves the mechanical stability of the rotor as a whole, and ensures the reliable operation of the motor 100 under various working conditions.

[0087] In some embodiments of the present application, as shown in Figures 1-3 The rotor disc 1 has a first annular portion 13 which protrudes axially from the side surface of the rotor disc 1, and the first mounting groove 11 is arranged on the side of the first annular portion 13 facing the permanent magnets 21.

[0088] That is, the first annular portion 13 can provide better arrangement space and arrangement position for the first mounting groove 11 in the radial direction. Exemplarily, the first mounting groove 11 is an annular groove, and the first fixing member 31 can be arc-shaped. During assembly, the first fixing member 31 can be deformed, and then the first fixing member 31 can be installed in the first mounting groove 11. At this time, the first fixing member 31 can be better assembled in the first mounting groove 11 after restoring the deformation. The assembly is simple and convenient, and the first fixing member 31 is relatively stable after assembly, can better withstand various complex forces, and can transmit the forces to the first annular portion 13 respectively, so that the first fixing member 31 is not easily damaged, thereby more reliably fixing the permanent magnets 21.

[0089] In addition, the design of the first annular portion 13 can also better improve the strength and rigidity of the rotor disc 1, so that it can better withstand various complex mechanical loads. Whether it is the instantaneous impact during startup or the sustained stress during operation, it can maintain good performance, prolong the service life of the rotor disc 1 and the entire motor 100, and improve the reliability and durability of the motor 100 under different working conditions.

[0090] In some embodiments of the present application, the fixing assembly comprises at least one second fixing member 32, and the second fixing member 32 is installed on the rotor disc 1 and fixes the outer periphery of at least one permanent magnet 21 in the radial direction.

[0091] Exemplarily, the second fixing member 32 is fixed at the outer periphery of one permanent magnet 21, and thus, the second fixing member 32 can be provided in plurality, and the plurality of second fixing members 32 and the plurality of permanent magnets 21 correspond one by one.

[0092] Exemplarily, the second fixing member 32 is fixed at the outer periphery of the plurality of permanent magnets 21, and the plurality can be two or more, which is not limited by the present application, for example, the second fixing member 32 can simultaneously fix the outer periphery of all the permanent magnets 21.

[0093] Referring to the specific example shown in the drawings, Figure 2 In one specific example shown in the drawings, the fixing assembly 3 can include the first fixing member 31 and the second fixing member 32, and the first fixing member 31 and the second fixing member 32 are both mounted on the rotor disc 1, and in the radial direction, the first fixing member 31 is fixed at the inner periphery of at least one permanent magnet 21, and the second fixing member 32 is fixed at the outer periphery of at least one permanent magnet 21.

[0094] In the above example, the rotor assembly 10 is composed of the rotor disc 1, the permanent magnet assembly 2 and the fixing assembly 3, and the plurality of permanent magnets 21 are uniformly and spacedly arranged around the axis of the rotor disc 1 on the rotor disc 1 to form a magnetic field source. The first fixing member 31 and the second fixing member 32 are respectively fixed in the radial direction from the inner periphery and the outer periphery of the permanent magnet 21. Through this layout, during the operation of the motor 100, the centrifugal force received by the permanent magnet 21 can be effectively balanced and constrained. The first fixing member 31 limits the inward displacement tendency of the permanent magnet 21 at the inner periphery, and the second fixing member 32 limits the outward displacement tendency of the permanent magnet 21 at the outer periphery, and the two work together to ensure that the permanent magnet 21 maintains a stable positional relationship when rotating at high speed and does not loosen or displace due to centrifugal force.

[0095] In terms of stability, compared with the traditional bolt pre-tightening method, under high-speed working conditions, since the first fixing member 31 and the second fixing member 32 are respectively fixed in the radial direction from the inner periphery and the outer periphery of the permanent magnet 21, the unstable factors caused by centrifugal force can be better reduced, the vibration and noise of the motor 100 can be reduced, thereby ensuring the smooth operation of the motor 100 and prolonging the service life of the motor 100. Secondly, in terms of carrying capacity, the stable fixing structure enables the rotor assembly 10 to withstand greater torque output. Because the permanent magnet 21 is reliably fixed, there is no problem of torque loss or transmission failure caused by loosening of the fixing member when transmitting torque, so that the motor 100 can adapt to working scenarios with higher torque requirements, can broaden the application range of the motor 100, and can improve the overall performance and reliability of the motor 100.

[0096] Therefore, according to the rotor assembly 10 of the utility model, by setting the first fixing part 31 and the second fixing part 32 on the rotor disc 1, and making the first fixing part 31 and the second fixing part 32 fixed in the radial direction from the inner periphery and the outer periphery of the permanent magnet 21 respectively, the stability of the permanent magnet 21 is better, and the stable fixing structure formed by the first fixing part 31 and the second fixing part 32 can bear greater torque output, can widen the application range of the motor 100, and can improve the overall performance and reliability of the motor 100.

[0097] In some embodiments of the utility model, as shown in Figure 2 The second fixing part 32 is arc-shaped around the axis of the rotor disc 1.

[0098] Exemplarily, the arc-shaped second fixing part 32 is provided with one, and one arc-shaped second fixing part 32 can simultaneously fix the outer peripheries of all the permanent magnets 21.

[0099] Exemplarily, the arc-shaped second fixing part 32 can also be provided with multiple, and the multiple second fixing parts 32 are fixed on the outer peripheries of the multiple permanent magnets 21 one by one. Of course, one second fixing part 32 can also be fixed on the outer peripheries of two or more permanent magnets 21, and the application is not limited.

[0100] In the above example, the arc-shaped second fixing part 32 can better fit the arc-shaped arrangement of the permanent magnets 21, reduce the space occupation, make the overall structure of the rotor assembly 10 more compact and reasonable, and be beneficial to the miniaturization design of the motor 100. When the second fixing part 32 can simultaneously fix at least two permanent magnets 21, the overall integrity constraint on the permanent magnet assembly 2 can be effectively enhanced, the relative position stability of the permanent magnets 21 during high-speed rotation can be improved, and the failure risk caused by loosening of individual permanent magnets 21 can be reduced. Furthermore, this design is convenient to install and disassemble, and can reduce the operation difficulty and time cost in the production and manufacturing link of the motor 100 or the subsequent maintenance process. Moreover, the arc-shaped fixing part is more uniform in stress distribution, can better bear and disperse the centrifugal force generated by the high-speed rotation of the permanent magnets 21, further improves the mechanical stability of the rotor as a whole, and guarantees the reliable operation of the motor 100 under various working conditions.

[0101] In some embodiments of the utility model, as shown in Figures 3-2 The rotor disc 1 is provided with a second installation groove 12, the second installation groove 12 is respectively arranged on the radial two sides of the permanent magnet assembly 2, the second fixing part 32 is installed in the second installation groove 12, and part of the second installation groove 12 is stretched out and pressed on the side surface of the permanent magnet 21.

[0102] That is, the second installation slot 12 provides a good positioning and stable installation basis for the second fixing member 32, so that the second fixing member 32 is not prone to displacement during high-speed rotation, thereby facilitating the permanent magnet 21 to be reliably fixed and better enhancing the stability of the rotor assembly 10 structure. Secondly, the second fixing member 32 partially protrudes and is pressed against the side surface of the permanent magnet 21, which can effectively constrain the permanent magnet 21, not only limiting the movement of the permanent magnet 21 in the radial direction, but also preventing the axial movement of the permanent magnet 21 to a certain extent, further improving the firmness of the permanent magnet 21. Furthermore, this layout facilitates the optimization of the space utilization inside the rotor disc 1, making the cooperation between the components more compact and reasonable, reducing unnecessary space waste, and facilitating the assembly process during production and manufacturing, improving production efficiency and reducing production cost.

[0103] In some embodiments of the present application, as shown in Figure 2 The second installation slot 12 is annular around the axis of the rotor disc 1.

[0104] That is, the second installation slot 12 can be configured as an annular groove structure, which enables the second fixing member 32 to continuously fix the permanent magnet 21 in the circumferential direction, forming a complete and uniform constraint ring. During high-speed operation, this continuous constraint can more stably resist the centrifugal force of the permanent magnet 21, effectively preventing the loosening or displacement of the permanent magnet 21 caused by uneven local stress, and better enhancing the stability and reliability of the rotor assembly 10. In addition, from the perspective of manufacturing, the annular groove facilitates processing and forming, which can reduce the processing difficulty and cost. At the same time, in the assembly process, the cooperation between the annular second installation slot 12 and the arc-shaped second fixing member 32 is more natural and smooth, which helps to improve the assembly efficiency and quality, and ensures the stable performance of the motor 100.

[0105] In some embodiments of the present application, as shown in Figure 2 and Figure 3 The rotor assembly 10 further comprises at least one second limiting member 42, and the second limiting member 42 is installed on the rotor disc 1. The second limiting member 42 is arranged at the opening of the second installation slot 12, and is used to limit the position of the second fixing member 32 in the radial direction.

[0106] That is, the second limiting piece 42 limits the radial position of the second fixing piece 32, effectively preventing the second fixing piece 32 from being displaced radially due to centrifugal force during high-speed operation, thereby better ensuring that the permanent magnet 21 is stably fixed on the rotor disc 1, greatly reducing vibration and noise during operation of the motor 100, and ensuring smooth operation of the motor 100. In addition, this limiting design strengthens the structural strength of the entire rotor assembly 10, making the connection between components more secure and stable, and even in complex and variable working conditions, the integrity of the rotor structure can be maintained. In addition, during the long-term use of the motor 100, the second limiting piece 42 can resist the risk of loosening of the second fixing piece 32 due to environmental factors or mechanical fatigue, prolonging the service life of the motor 100, reducing maintenance costs, improving the overall reliability and durability of the motor 100, and providing a strong guarantee for the continuous and efficient operation of the motor 100.

[0107] When the second limiting piece 42 is provided with a plurality of second limiting pieces, the fixing effect of the second fixing piece 32 can be further improved.

[0108] In some embodiments of the present application, the second limiting piece 42 is located between two adjacent permanent magnets 21. In this way, the gap between the two adjacent permanent magnets 21 can be better utilized to accommodate the second limiting piece 42, avoiding the need for additional space on the rotor disc 1, and making the rotor structure more compact and efficient.

[0109] In some embodiments of the present application, as shown in Figures 1-3 The rotor disc 1 has a second annular portion 14, which protrudes axially from the side surface of the rotor disc 1, and the second mounting groove 12 is provided on the side of the second annular portion 14 facing the permanent magnet 21.

[0110] That is, the second annular portion 14 can provide a better arrangement space and arrangement position for the second mounting groove 12 in the radial direction. For example, the second mounting groove 12 is an annular groove, and the second fixing piece 32 can be arc-shaped. During assembly, the second fixing piece 32 can be deformed, and then the second fixing piece 32 can be installed in the second mounting groove 12. At this time, the second fixing piece 32 can be better fixed in the second mounting groove 12 after recovering from deformation. The assembly is simple and convenient, and the second fixing piece 32 is relatively stable after assembly, can better withstand various complex forces, and can transmit the forces to the second annular portion 14, so that the second fixing piece 32 is not easily damaged, thereby more reliably fixing the permanent magnet 21.

[0111] In addition, the design of the second annular portion 14 can also improve the strength and rigidity of the rotor disc 1, so that the rotor disc 1 can better withstand various complex mechanical loads, whether it is an instantaneous impact during startup or a sustained stress during operation, and can maintain good performance, prolong the service life of the rotor disc 1 and the entire motor 100, and improve the reliability and durability of the motor 100 under different working conditions.

[0112] In some embodiments of the present application, as shown in Figures 1-2 As shown in the drawings, the rotor disc 1 is provided with a plurality of rotor grooves 15, and the plurality of permanent magnets 21 are installed one-to-one in the rotor grooves 15.

[0113] That is, the rotor grooves 15 provide precise positioning for the permanent magnets 21, ensuring that the permanent magnets 21 are evenly and stably distributed on the rotor disc 1, which is conducive to forming a stable magnetic field structure, thereby improving the electromagnetic performance of the motor 100 and making the output torque of the motor 100 more stable and efficient during operation. Secondly, this installation method can effectively constrain the freedom of the permanent magnets 21 in all directions, especially under high-speed working conditions, preventing the permanent magnets 21 from being displaced or falling out due to strong centrifugal force, greatly enhancing the stability and reliability of the rotor structure. Furthermore, the presence of the rotor grooves 15 simplifies the installation process of the permanent magnets 21, facilitating automated assembly during the production process, improving production efficiency and reducing production costs.

[0114] In some embodiments of the present application, the rotor grooves 15 are through grooves that penetrate the rotor disc 1 along the axial direction, and the two sides of the rotor disc 1 in the axial direction are respectively a first side and a second side. The fixing assembly 3 includes a third fixing member and a fourth fixing member, the third fixing member is installed on the first side of the rotor disc 1, and the fourth fixing member is fixed on the second side of the rotor disc 1. In the axial direction, the third fixing member and the fourth fixing member are respectively fixed on both sides of at least one permanent magnet 21.

[0115] That is, by arranging the third fixing member and the fourth fixing member on both sides of the rotor disc 1 in the axial direction and positioning them on both sides of the permanent magnet 21, a strong clamping force can be formed on the permanent magnet 21 in the axial direction, combined with the radial constraint of the permanent magnet 21 by the rotor grooves 15, to form a full-dimensional fixing system. When the motor 100 is running at high speed, it can effectively resist the centrifugal force, axial force and other complex force systems acting on the permanent magnet 21, greatly enhancing the firmness of the permanent magnet 21, reducing problems such as performance degradation, vibration and noise increase of the motor 100 caused by loosening of the permanent magnet 21, and significantly improving the stability and reliability of the entire rotor, ensuring that the motor 100 can operate stably and efficiently under various working conditions, prolonging the service life of the motor 100 and expanding its application range.

[0116] In some embodiments of the utility model, the third fixing part and the fourth fixing part are respectively fixed to the inner periphery of the two sides of the at least one permanent magnet 21, and / or the third fixing part and the fourth fixing part are respectively fixed to the outer periphery of the two sides of the at least one permanent magnet 21.

[0117] Exemplarily, the third fixing part and the fourth fixing part are both provided with two, wherein the third fixing part of one and the fourth fixing part of one are respectively fixed to the inner periphery of the two sides of the at least one permanent magnet 21, and the third fixing part of another and the fourth fixing part of another are also respectively fixed to the outer periphery of the two sides of the at least one permanent magnet 21.

[0118] Reference Figures 1-3 The specific examples shown in the drawings, Figure 2 The two first fixing parts 31 in the radial direction can be the third fixing part of one and the fourth fixing part of one respectively, and the two first fixing parts 31 are respectively arranged on the two axial sides of the permanent magnet assembly 2, Figure 2 The two second fixing parts 32 in the radial direction can be the third fixing part of another and the fourth fixing part of another respectively, and the rotor slot 15 in the form of a through slot can facilitate the installation and removal of the permanent magnet 21, which is beneficial to the convenient operation of the permanent magnet 21 during production and maintenance, reduces the operation difficulty and time cost. And the first fixing part 31 and the second fixing part 32 are arranged on the two axial sides of the permanent magnet assembly 2, which can form a strong clamping of the permanent magnet 21 from the axial direction, combined with the radial constraint of the permanent magnet 21 by the rotor slot 15, to build a full-dimensional fixed system. When the motor 100 is running at high speed, the centrifugal force, axial force and other complex force systems suffered by the permanent magnet 21 can be effectively resisted, which greatly enhances the firmness of the permanent magnet 21, reduces the problems of performance decline, vibration and noise increase of the motor 100 caused by the loosening of the permanent magnet 21, significantly improves the stability and reliability of the rotor as a whole, ensures that the motor 100 can run stably and efficiently under various working conditions, prolongs the service life of the motor 100 and expands its application range.

[0119] Exemplarily, the third fixing part and the fourth fixing part can also be respectively arranged on the inner periphery of the two sides of the permanent magnet 21 for fixing.

[0120] Exemplarily, the third fixing part and the fourth fixing part can also be respectively arranged on the outer periphery of the two sides of the permanent magnet 21 for fixing.

[0121] In some embodiments of the utility model, the first side is provided with a third mounting groove for mounting the third fixing part, and the second side is provided with a fourth mounting groove for mounting the fourth fixing part.

[0122] As Figures 1-3In one specific example, the rotor disc 1 has two axial sides, a first side and a second side, each of which is provided with a first mounting groove 11 for mounting the first fixing member 31 and a second mounting groove 12 for mounting the second fixing member 32.

[0123] That is, the rotor disc 1 has two axial sides, a first side and a second side, each of which is provided with a first mounting groove 11 for mounting the first fixing member 31 and a second mounting groove 12 for mounting the second fixing member 32. The double-sided arrangement enables the first fixing member 31 to firmly constrain the inner periphery of the permanent magnet 21 from two axial directions. During the operation of the motor 100, especially under high-speed working conditions, the first fixing member 31 can more effectively resist the displacement trend of the permanent magnet 21 towards the inner periphery due to centrifugal force under the support of the double-sided first mounting groove 11, thereby ensuring the stable position of the inner ring of the permanent magnet 21 in the radial direction. Similarly, the double-sided arrangement of the second fixing member 32 and the second mounting groove 12 enables the second fixing member 32 to reliably fix the outer periphery of the permanent magnet 21 from two axial directions. When the motor 100 rotates at high speed, the second fixing member 32, with the support of the double-sided second mounting groove 12, effectively prevents the permanent magnet 21 from deviating towards the outer periphery due to centrifugal force, ensuring the precise and unchanged position of the outer ring of the permanent magnet 21 in the radial direction.

[0124] In addition, the double-sided first mounting groove 11 and the second mounting groove 12, as well as the corresponding first fixing member 31 and the second fixing member 32, jointly improve the stability and reliability of the rotor assembly 10. In the face of complex mechanical environments, such as impact during starting, vibration during operation, and various axial and radial forces, this structure can evenly distribute the stress and avoid the problem of loosening of the permanent magnet 21 or damage to other components caused by excessive local stress. At the same time, the double-sided symmetrical design is conducive to standardized operations during production and manufacturing, improves production efficiency and reduces costs, and helps to maintain the accurate position of the permanent magnet assembly 2 in the axial direction, ensuring the uniformity and stability of the magnetic field of the motor 100, thereby improving the electromagnetic performance and operating efficiency of the motor 100, enabling it to operate stably and efficiently under various working conditions.

[0125] In some embodiments of the present application, the rotor disc 1 is provided with a through hole that penetrates the rotor disc 1 in the axial direction, and the rotor further comprises a limiting member that is arranged in the through hole and used to limit the positions of the third fixing member and the fourth fixing member.

[0126] As Figures 1-3In one specific example, the rotor disc 1 is provided with a first through hole 16 axially penetrating the rotor disc 1, and in the radial direction, the first through hole 16 is adjacent to the first mounting groove 11. The rotor further comprises a first limiting member 41, which is arranged in the first through hole 16, and is used to limit the radial position of the two first fixing members 31. In addition, the rotor disc 1 is provided with a second through hole 17 axially penetrating the rotor disc 1, and in the radial direction, the second through hole 17 is adjacent to the second mounting groove 12. The rotor further comprises a second limiting member 42, which is arranged in the second through hole 17, and is used to limit the radial position of the two second fixing members 32.

[0127] In the above example, for the first through hole 16 and the first limiting member 41, since they are adjacent to the first mounting groove 11 and axially penetrate the rotor disc 1, after the first limiting member 41 is arranged therein, the radial position of the two first fixing members 31 located on the two sides of the permanent magnet assembly 2 in the axial direction can be effectively limited. When the motor 100 is running at high speed, the first fixing member 31 bears the centrifugal force of the permanent magnet 21 and other complex forces. The first limiting member 41 can prevent the first fixing member 31 from being radially displaced due to force, thereby ensuring the stability of the fixation of the permanent magnet 21 at the inner periphery, guaranteeing the integrity and reliability of the rotor structure of the motor 100, reducing the risk of motor 100 failure caused by loose parts, and improving the smoothness of the motor 100 operation.

[0128] Similarly, the second through hole 17 and the second limiting member 42 are arranged for the second mounting groove 12. The second limiting member 42 is arranged in the second through hole 17 adjacent to the second mounting groove 12, and is used to limit the radial position of the two second fixing members 32. This can effectively prevent the radial displacement of the second fixing member 32 due to the centrifugal force of the permanent magnet 21 and other external forces during the operation of the motor 100, so that the fixation of the permanent magnet 21 at the outer periphery is more firm, the stability of the magnetic field distribution of the motor 100 is maintained, and the stability and durability of the rotor as a whole are further enhanced.

[0129] In some embodiments of the present application, the limiting member comprises a rivet, a screw or a bolt. In combination with the above example, the first limiting member 41 comprises a rivet, a screw or a bolt, and the second limiting member 42 comprises a rivet, a screw or a bolt.

[0130] In the present example, the first limiting member 41 and the second limiting member 42 can also be other structures, which are not limited in the present application.

[0131] In some embodiments of the present application, the inner periphery of the permanent magnet 21 is provided with a first sunken platform 211 cooperating with the fixing assembly, and / or the outer periphery of the permanent magnet 21 is provided with a second sunken platform 212 cooperating with the fixing assembly.

[0132] As Figures 1-2In one example shown, the inner periphery of the permanent magnet 21 is provided with a first sunken platform 211 matched with the first fixing member 31, and the outer periphery of the permanent magnet 21 is provided with a second sunken platform 212 matched with the second fixing member 32.

[0133] That is, the first sunken platform 211 is matched with the first fixing member 31, so that the first fixing member 31 can be better attached to the first sunken platform 211 at the inner periphery of the permanent magnet 21, which not only facilitates the matching of the first fixing member 31 and the permanent magnet 21, but also better enhances the connection tightness and stability between the first fixing member 31 and the permanent magnet 21. When the motor 100 is running at high speed, such tight matching can more effectively resist the centrifugal force suffered by the permanent magnet 21, prevent its inward displacement, and ensure the stability of the rotor structure. Similarly, the cooperative action of the second sunken platform 212 and the second fixing member 32 enables the second fixing member 32 to be tightly connected at the outer periphery of the permanent magnet 21, effectively resisting the outward displacement caused by the centrifugal force, optimizing the magnetic field distribution, and improving the overall performance and reliability of the motor 100.

[0134] In some embodiments of the present application, as shown in Figures 1-3 The rotor assembly 10 further includes a rotor shaft 5, and the rotor disc 1 has a shaft hole, and the rotor shaft 5 is arranged in the shaft hole, and the rotor shaft 5 and the rotor disc 1 are an integral part.

[0135] That is, when the rotor shaft 5 and the rotor disc 1 are an integral part, the possible matching gap in the connection mode between the rotor shaft 5 and the rotor disc 1 can be eliminated, and the overall rigidity and stability of the rotor structure can be better improved. When the motor 100 is running at high speed, various complex mechanical loads such as centrifugal force and torsional force can be effectively resisted, vibration and noise caused by loose or deformed parts can be significantly reduced, and the smoothness of the motor 100 operation can be ensured. At the same time, the design of the integral part optimizes the power transmission path, reduces the energy loss at the connection site, makes the torque transmission more efficient and direct, better improves the energy conversion efficiency and power output performance of the motor 100, prolongs the service life of the motor 100, and reduces the maintenance cost.

[0136] In some embodiments of the present application, the rotor assembly 10 further includes an encapsulating member, and the rotor disc 1, the permanent magnet assembly 2, and the fixing assembly 3 are all encapsulated in the encapsulating member.

[0137] Taking the encapsulation of the permanent magnet assembly 2 as an example, the encapsulation provides effective protection for the permanent magnet assembly 2, preventing it from being affected by external environmental factors such as dust and moisture. This helps maintain the stability of the permanent magnet 21's performance and extends its service life. In addition, the encapsulation can also constrain and fix the permanent magnet assembly 2, further enhancing its stability on the rotor disk 1. Especially under complex operating conditions such as high-speed operation of the motor 100 and exposure to large centrifugal forces, it can reduce the possibility of displacement or loosening of the permanent magnet 21, ensuring the stability of the overall structure of the motor 100 and the reliable performance of its electromagnetic properties, thus contributing to the stable and efficient operation of the motor 100.

[0138] For example, the material of the encapsulation component can be epoxy resin, polyurethane, ceramic material, etc., and this application does not impose any restrictions.

[0139] For example, both the first fastener 31 and the second fastener 32 can be made of metal.

[0140] This utility model also proposes a motor 100 having the rotor assembly 10 of the above embodiments.

[0141] like Figures 6-8 As shown, the motor 100 according to an embodiment of the present utility model includes a motor housing 20, a stator assembly 30 and a rotor assembly 10. The stator assembly 30 is fixed inside the motor housing 20, and the rotor assembly 10 is rotatably disposed inside the motor housing 20.

[0142] According to the present invention, the motor 100, by incorporating the rotor assembly 10 of the above embodiment, has a stable structure, effectively fixing the permanent magnet 21. During motor operation, it can withstand high-speed centrifugal force, reducing the risk of displacement and loosening of the permanent magnet 21, lowering vibration and noise, and improving operational stability. This further enhances the reliability, efficiency, and durability of the motor 100 and expands its application range.

[0143] In some embodiments of this utility model, such as Figures 6-8 As shown, the motor housing 20 includes a first housing 61 and a second housing 62, which are detachably connected in the axial direction. The stator assembly 30 includes a first winding coil 71 and a second winding coil 72. The first winding coil 71 is detachably mounted on the first housing 61, and the second winding coil 72 is detachably mounted on the second housing 62. In the axial direction, the rotor assembly 10 is located between the first winding coil 71 and the second winding coil 72.

[0144] That is, the first shell 61 and the second shell 62 are axially detachably connected, which is beneficial to the assembly and later maintenance of the motor 100, and the internal components can be quickly inspected, repaired or replaced. The first winding coil 71 and the second winding coil 72 are respectively detachably mounted on the corresponding shell, which facilitates the separate processing of winding faults or the upgrading of the coil, and can reduce the maintenance cost and difficulty. The rotor assembly 10 is arranged between the two coils 75, which makes the magnetic field distribution more reasonable and uniform, effectively improves the electromagnetic conversion efficiency of the motor 100, enhances the power output performance and operation stability of the motor 100, and further ensures that the motor 100 can work efficiently and reliably under various working conditions.

[0145] In some embodiments of the utility model, as shown in Figure 9 and Figure 10 The first winding coil 71 and the second winding coil 72 each include: a core base 73, a core column 74 and a coil 75, the core base 73 is detachably connected with the motor shell 20, the core column 74 is located on one side of the core base 73, the core column 74 is uniformly and spaced apart from each other around the axis, the coil 75 is wound around the outer circumferential side of the core column 74, and the wiring end of the coil 75 is located on the radial outer side of the core column 74.

[0146] That is, the detachable connection of the core base 73 and the motor shell 20 facilitates installation, disassembly and maintenance, and when problems occur, the faulty core base 73 can be quickly replaced or relevant maintenance work can be carried out, thereby reducing the maintenance cost and time cost. The plurality of uniformly and spaced apart core columns 74 provide a stable and regular winding basis for the coil 75, which helps to form a uniform and stable magnetic field. The wiring end of the coil 75 is located on the radial outer side of the core column 74, which facilitates the connection and arrangement of the circuit, reduces the safety hazards caused by the disorder of the circuit, and is also beneficial to the subsequent inspection and adjustment of the circuit, thereby improving the reliability and practicability of the motor 100 as a whole.

[0147] In some embodiments of the utility model, as shown in Figures 6-7 The motor shell 20 is provided with an oil inlet and an oil outlet, and the oil inlet and the oil outlet are respectively arranged on both sides of the first direction X of the motor shell 20, wherein the oil inlet includes a first oil inlet 63 and a second oil inlet 64, the first oil inlet 63 and the second oil inlet 64 are spaced apart along the second direction Y, and / or the oil outlet includes a first oil outlet 65 and a second oil outlet 66, the first oil outlet 65 and the second oil outlet 66 are spaced apart along the second direction Y, and the first direction X and the second direction Y are perpendicular to each other.

[0148] That is to say, the oil inlet and the oil outlet are respectively located on both sides of the motor shell 20 in the first direction X, and the first oil inlet 63 and the second oil inlet 64 are spaced apart along the second direction Y, and the first oil outlet 65 and the second oil outlet 66 are spaced apart along the second direction Y, so that the cooling oil can flow through the inside of the motor 100 more comprehensively, take away the heat inside the motor 100, improve the heat dissipation efficiency, effectively prevent the motor 100 from overheating, and ensure the stability of the motor 100 during high-load operation. In addition, the layout of the first oil inlet 63, the second oil inlet 64, the first oil outlet 65 and the second oil outlet 66 can make the lubricating oil more evenly distributed to each lubricated component, reduce friction and wear, and prolong the service life of the motor 100.

[0149] In some embodiments of the utility model, the motor 100 further includes a plug (not shown in the figure), the plug is used for plugging one of the first oil inlet 63 and the second oil inlet 64, and / or the plug is used for plugging one of the first oil outlet 65 and the second oil outlet 66.

[0150] That is to say, in the actual application scene, the installation environment of the motor 100 is complex and changeable, when the pipeline layout around the motor 100 is limited, for example, the space on one side is narrow and it is difficult to connect multiple pipelines, the plug can be used to plug the first oil inlet 63 or the second oil inlet 64 and the first oil outlet 65 or the second oil outlet 66 which are not convenient to connect the pipeline according to the actual situation, which greatly improves the adaptability of the motor 100 in different installation environments, avoids the difficulty of pipeline connection caused by the fixed position of the oil inlet and outlet, ensures the normal construction of the oil cooling and lubrication system of the motor 100, reduces the installation difficulty and cost, and can be beneficial to the smooth installation of the motor 100 and the efficient operation in various special or limited working conditions.

[0151] In some embodiments of the utility model, as shown in Figures 6-8 The motor 100 further includes a junction box 40, the junction box 40 is connected with the motor shell 20, and in the second direction Y, the junction box 40 is located between the first oil inlet 63 and the second oil inlet 64.

[0152] That is to say, the junction box 40 is located between the first oil inlet 63 and the second oil inlet 64, which can better protect the junction box 40, and the oil pipeline of the oil inlet is not easy to directly affect the electrical connection part in the junction box 40 when connected or fails, which is beneficial to the safe and stable operation of the electrical system of the motor 100, and can improve the reliability and practicality of the motor 100 as a whole.

[0153] In some embodiments of the utility model, as shown in Figures 6-8As shown, the motor shell 20 includes a first shell 61 and a second shell 62 which are detachably connected in the axial direction, and the terminal box 40 includes a first box body 81 and a second box body 82 which are detachably connected, the first box body 81 is an integral part integrally formed with the first shell 61, and the second box body 82 is an integral part integrally formed with the second shell 62.

[0154] That is, the first shell 61 and the second shell 62 are detachably connected in the axial direction, which is beneficial to the assembly, maintenance and repair of the internal structure of the motor 100, and can quickly disassemble and locate the problem when the motor 100 fails. Secondly, the first box body 81 of the terminal box 40 is integrally formed with the first shell 61, and the second box body 82 is integrally formed with the second shell 62, which not only ensures the stability of the structure of the terminal box 40, but also reduces the number of parts and the risk of electrical failure caused by loose connecting parts. In the production and manufacturing process, the integrally formed part can reduce the assembly process, improve production efficiency and reduce production cost. Moreover, during the operation of the motor 100, such integrated design can better resist the interference of external environmental factors such as dust and moisture, ensuring the reliability of electrical connection in the terminal box 40, and thus ensuring the stable operation and electrical safety of the motor 100 as a whole.

[0155] The specific structure of the motor 100 of the present application will be described in detail below. Figures 1-10 The specific structure of the motor 100 of the present application will be described in detail below.

[0156] The motor shell 20 is the external protection and support structure of the motor 100, which is detachably connected in the axial direction by the first shell 61 and the second shell 62, and the oil inlet and the oil outlet are arranged on the motor shell 20. The oil inlet is divided into a first oil inlet 63 and a second oil inlet 64, and the oil outlet is divided into a first oil outlet 65 and a second oil outlet 66. According to the actual installation requirements, one of the oil inlets or oil outlets can be plugged by a plug, so that the oil port which is more convenient for connecting the pipeline can be flexibly selected, thereby improving the convenience of pipeline installation. In the second direction Y, the terminal box 40 is located between the first oil inlet 63 and the second oil inlet 64, which not only makes the structure of the motor 100 more compact in this direction, reduces the overall space occupation, but also facilitates the planning and construction of electrical lines and oil lines, reduces the risk of interference between the two, and the first box body 81 of the terminal box 40 is integrally formed with the first shell 61, and the second box body 82 is integrally formed with the second shell 62, which enhances the stability of the structure of the terminal box 40, reduces the number of parts, and reduces the probability of electrical failure caused by loose connecting parts, effectively ensuring the safe and stable operation of the electrical system of the motor 100.

[0157] The first winding coil 71 and the second winding coil 72 are both composed of a core base 73, a core column 74 and a coil 75. The core base 73 is detachably connected with the motor shell 20, facilitating installation, disassembly and subsequent maintenance work. When the core base 73 is damaged or needs to be upgraded, the operation can be quickly performed, reducing the maintenance cost and time cost. The core column 74 is located on one side of the core base 73 and is uniformly and spacedly arranged around the axis, providing a winding basis for the coil 75, so that a uniform and stable magnetic field can be formed when energized, thereby ensuring the efficient operation of the motor 100. The coil 75 is wound around the outer circumferential side of the core column 74, and the wiring end is located on the radial outer side of the core column 74. Such a design facilitates the connection and arrangement of the circuit, reduces the safety hazards caused by the circuit disorder, is also conducive to the subsequent inspection and adjustment of the circuit, and improves the reliability and practicality of the motor 100 as a whole.

[0158] The rotor assembly 10 is located between the first winding coil 71 and the second winding coil 72 of the stator assembly 30. The rotor disc 1 has a shaft hole in which the rotor shaft 5 is arranged, and the two can be an integral one-piece, which enhances the overall rigidity of the rotor, effectively resists complex mechanical loads such as centrifugal force generated when the motor 100 is running at high speed, reduces vibration and noise, ensures the stability and reliability of power output, optimizes the torque transmission efficiency, and avoids the loosening of the shaft and disc connection part or energy loss affecting the performance of the motor 100. The first mounting groove 11 and the second mounting groove 12 are arranged on the first side and the second side of the rotor disc 1, the first mounting groove 11 is used to mount the first fixing member 31, and the inner periphery of the permanent magnet assembly 2 is matched, and the second mounting groove 12 is used to mount the second fixing member 32, and the outer periphery of the permanent magnet assembly 2 is matched, and through this double-sided fixing method, the permanent magnet assembly 2 is effectively constrained from the axial direction. Moreover, in order to further limit the position of the first fixing member 31 and the second fixing member 32 in the radial direction, the first through hole 16 and the second through hole 17 are provided on the rotor disc 1 and penetrate in the axial direction, the first limiting member 41 (such as a rivet, screw or bolt) is arranged in the first through hole 16, and the second limiting member 42 (such as a rivet, screw or bolt) is arranged in the second through hole 17, which prevents the first fixing member 31 and the second fixing member 32 from being displaced in the radial direction during the operation of the motor 100 due to the centrifugal force of the permanent magnet 21 and other factors, and ensures the stable installation of the permanent magnet 21 on the rotor disc 1. The permanent magnet 21 is provided with a first sink 211 matched with the first fixing member 31 at the inner periphery, and a second sink 212 matched with the second fixing member 32 at the outer periphery, and this sink structure makes the cooperation between the first fixing member 31 and the second fixing member 32 and the permanent magnet 21 more closely and stably, and enhances the reliability of the connection. In addition, the permanent magnet assembly 2 is encapsulated in an encapsulating member, which can be made of epoxy resin, polyimide and other materials. These materials have good insulation performance, chemical corrosion resistance, high temperature resistance or mechanical properties, etc., which can effectively protect the permanent magnet assembly 2 from dust, water vapor, high temperature and mechanical impact and other external environmental factors, prolong the service life of the permanent magnet 21, and also help to maintain the stability of the performance of the permanent magnet 21, and ensure that the motor 100 can continuously and efficiently operate under various working conditions.

[0159] The motor 100 further comprises an encoder 92 connected to the axial end of the rotor shaft 5, and the two ends of the rotor shaft 5 are rotatably matched with the motor shell 20 through the rotor bearing 91, and the end of the rotor shaft 5 is provided with a spline, so that the rotor shaft 5 is drivingly connected with the transmission member. Understandably, the end of the rotor shaft 5 can also be provided with a flat key, which is not limited in the present application. In addition, the above-mentioned spline can be an external spline or an internal spline. In addition, the rotor shaft 5 and the rotor disc 1 can also be assembled in a detachable connection manner, which is not limited in the present application.

[0160] The first direction X in the example can be the up-down direction, and the second direction Y can be the left-right direction, which is not limited in the application.

[0161] In the example, the first shell 61 and the second shell 62, and the first box body 81 and the second box body 82 can be connected by screws.

[0162] The lubrication of the motor 100 and the partial assembly of the rotor assembly 10 will be described below in combination with the above examples.

[0163] The oil inlet of the motor 100 enters the cold-state heat dissipation oil, and the oil outlet outputs the hot-state heat dissipation oil, and the heat dissipation oil in the inner cavity splashes and dissipates heat in the motor 100 under the high-speed rotation of the rotor assembly 10; when the temperature of the heat dissipation oil is higher than the set value, the sensor in the motor 100 outputs a signal, the oil inlet is opened, the cold-state heat dissipation oil enters, and the hot-state heat dissipation oil is output from the oil outlet; when the heat dissipation oil in the motor 100 reaches a certain height, the electromagnetic valve is closed, and the next time the temperature sensor measures that the temperature is higher than the set value, the electromagnetic valve is opened again, and the heat dissipation is repeated in this way.

[0164] During the assembly process, the first fixing member 31 and the second fixing member 32 are first installed on one axial side of the rotor disc 1, then the permanent magnets 21 are sequentially placed into the rotor grooves 15 of the rotor disc 1 in correspondence, the first sink 211 of the permanent magnet 21 is attached to the first fixing member 31, the second sink 212 of the permanent magnet 21 is attached to the second fixing member 32, and then the first fixing member 31 and the second fixing member 32 on the other axial side of the rotor disc 1 are installed; in order to prevent the first fixing member 31 and the second fixing member 32 from falling off, the first limiting member 41 and the second limiting member 42 are respectively arranged on the position edges of the rotor disc 1 corresponding to the first fixing member 31 and the second fixing member 32 to limit the radial direction; then the entire rotor assembly 10 is subjected to a sealing glue treatment to prevent the permanent magnet assembly 2 from shaking during the operation of the rotor disc 1.

[0165] The other configurations and operations of the rotor assembly 10 and the motor 100 according to the embodiments of the utility model are known to those skilled in the art, and will not be described in detail here.

[0166] The application also provides a device, which comprises the motor 100, and the motor 100 has the same or similar technical features or effects as the motor 100 in the above examples.

[0167] In the description of the specification, the description of the terms "some embodiments", "optionally", "further", or "some examples" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiments or examples are included in at least one embodiment or example of the present application. In the description of the specification, the illustrative description of the above terms does not necessarily mean the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0168] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A rotor assembly (10) characterized by, The utility model relates to a rotor disc (1); Permanent magnet assembly (2), the permanent magnet assembly (2) includes a plurality of permanent magnets (21), a plurality of the permanent magnets (21) are arranged on the rotor disc (1) evenly spaced around the axis of the rotor disc (1); Fixed assembly (3) is installed on the rotor disc (1), and the fixed assembly (3) is at least partially located at the side of the permanent magnet assembly (2) away from the rotor disc (1) to fix the permanent magnet assembly (2) between the fixed assembly (3) and the rotor disc (1). The fixed assembly (3) includes at least one first fixing piece (31), the first fixing piece (31) is installed on the rotor disc (1), and the first fixing piece (31) fixes the inner periphery of at least one the permanent magnet (21).

2. The rotor assembly (10) of claim 1, wherein The rotor disc (1) is provided with a first installation slot (11), and the first installation slot (11) is located on the radial inner side of the permanent magnet assembly (2), the first fixing piece (31) is installed in the first installation slot (11), and part of the first fixing piece (31) is pressed on the side of the permanent magnet (21) by the first installation slot (11).

3. The rotor assembly (10) of claim 2, wherein, The first installation slot (11) is annular around the axis of the rotor disc (1).

4. The rotor assembly (10) of claim 3, wherein Further comprising at least one first limiting piece (41), the first limiting piece (41) is installed on the rotor disc (1), and the first limiting piece (41) is arranged at the opening of the first installation slot (11) to limit the position of the first fixing piece (31) in the radial direction.

5. The rotor assembly (10) of claim 4, wherein, The first limiting piece (41) is located between two adjacent permanent magnets (21).

6. The rotor assembly (10) of claim 5, wherein The first fixing piece (31) is arc-shaped around the axis of the rotor disc (1).

7. The rotor assembly (10) of claim 2, wherein The rotor disc (1) has a first annular portion (13), and the first annular portion (13) protrudes from the side of the rotor disc (1) in the axial direction, and the first installation slot (11) is arranged on the side of the first annular portion (13) facing the permanent magnet (21).

8. The rotor assembly (10) of claim 3, wherein, The fixed assembly includes at least one second fixing piece (32), the second fixing piece (32) is installed on the rotor disc (1), and the second fixing piece (32) fixes the outer periphery of at least one the permanent magnet (21) in the radial direction.

9. The rotor assembly (10) of claim 1, wherein The rotor disc (1) is provided with a second installation slot (12), and the second installation slot (12) is located on the radial outer side of the permanent magnet assembly (2), the second fixing piece (32) is installed in the second installation slot (12), and part of the second fixing piece (32) is pressed on the side of the permanent magnet (21) by the second installation slot (12).

10. The rotor assembly (10) of claim 9, characterized in that The second installation slot (12) is annular around the axis of the rotor disc (1).

11. The rotor assembly (10) of claim 10, wherein, Further comprising at least one second limiting piece (42), the second limiting piece (42) is installed on the rotor disc (1), and the second limiting piece (42) is arranged at the opening of the second installation slot (12) to limit the position of the second fixing piece (32) in the radial direction.

12. The rotor assembly (10) of claim 10, wherein, The second limiting piece (42) is located between two adjacent permanent magnets (21).

13. The rotor assembly (10) of claim 12, characterized by ​ 14. The rotor assembly (10) of claim 9, characterized by The second fixing member (32) is arc-shaped around the axis of the rotor disc (1).

15. The rotor assembly (10) of claim 10, wherein, The rotor disc (1) has a second annular portion (14) protruding axially from the side surface of the rotor disc (1), and the second mounting groove (12) is arranged on one side of the second annular portion (14) facing the permanent magnet (21).

16. The rotor assembly (10) of claim 1, wherein The rotor disc (1) is provided with rotor grooves (15), a plurality of the rotor grooves (15) are arranged, and a plurality of the permanent magnets (21) are correspondingly arranged in the rotor grooves (15), the rotor grooves (15) are through grooves penetrating the rotor disc (1) in the axial direction, and the rotor disc (1) has a first side surface and a second side surface in the axial direction, and the fixing assembly (3) comprises: a third fixing member and a fourth fixing member, the third fixing member is arranged on the first side surface of the rotor disc (1), and the fourth fixing member is arranged on the second side surface of the rotor disc (1), and in the axial direction, the third fixing member and the fourth fixing member are arranged on both sides of at least one of the permanent magnets (21).

17. The rotor assembly (10) according to claim 16, characterized in that the third fixing member and the fourth fixing member are arranged on the inner periphery of both sides of at least one of the permanent magnets (21), and / or the third fixing member and the fourth fixing member are arranged on the outer periphery of both sides of at least one of the permanent magnets (21).

18. The rotor assembly (10) of claim 16, wherein, The first side surface is provided with a third mounting groove for mounting the third fixing member, and the second side surface is provided with a fourth mounting groove for mounting the fourth fixing member.

19. The rotor assembly (10) according to claim 18, characterized in that the rotor disc (1) is provided with a through hole penetrating the rotor disc (1) in the axial direction, and the rotor further comprises a limiting member penetrating the through hole and used for limiting the positions of the third fixing member and the fourth fixing member.

20. The rotor assembly (10) of claim 19, wherein, The limiting member comprises a rivet, a screw or a bolt.

21. The rotor assembly (10) of claim 1, wherein, The inner periphery of the permanent magnet (21) is provided with a first counterbore (211) matched with the fixing assembly, and / or the outer periphery of the permanent magnet (21) is provided with a second counterbore (212) matched with the fixing assembly.

22. The rotor assembly (10) of claim 1, wherein Further comprising a rotor shaft (5), the rotor disc (1) has a shaft hole, and the rotor shaft (5) penetrates the shaft hole, and the rotor shaft (5) and the rotor disc (1) are integrally formed as an integral piece.

23. The rotor assembly (10) of claim 1, wherein Further comprising an encapsulating member, the rotor disc (1), the permanent magnet assembly (2) and the fixing assembly (3) are encapsulated in the encapsulating member.

24. An electric machine (100), characterized in that Further comprising: a motor shell (20); a stator assembly (30) fixed in the motor shell (20); a rotor assembly (10) rotatably arranged in the motor shell (20), the rotor assembly (10) comprises the rotor assembly (10) according to any one of claims 1-23.

25. The electric machine (100) of claim 24, characterized in that, The motor shell (20) comprises a first shell (61) and a second shell (62), the first shell (61) and the second shell (62) are detachably connected in the axial direction, the stator assembly (30) comprises a first winding coil (71) and a second winding coil (72), the first winding coil (71) is detachably mounted on the first shell (61), and the second winding coil (72) is detachably mounted on the second shell (62), and the rotor assembly (10) is located between the first winding coil (71) and the second winding coil (72) in the axial direction.

26. The electric machine (100) of claim 25, characterized in that The first winding coil (71) and the second winding coil (72) each comprise: a core base (73) detachably connected with the motor shell (20); a core column (74) located on one side of the core base (73), the core column (74) is uniformly spaced around the axis; a coil (75) wound on the outer circumferential side of the core column (74), and the wiring end of the coil (75) is located on the radially outer side of the core column (74).

27. The electric machine (100) of claim 24, characterized in that, The motor shell (20) is provided with an oil inlet and an oil outlet, the oil inlet and the oil outlet are respectively arranged on both sides of the first direction (X) of the motor shell (20), wherein, the oil inlet comprises a first oil inlet (63) and a second oil inlet (64), the first oil inlet (63) and the second oil inlet (64) are spaced apart along the second direction (Y), and / or, the oil outlet comprises a first oil outlet (65) and a second oil outlet (66), the first oil outlet (65) and the second oil outlet (66) are spaced apart along the second direction (Y), and the first direction (X) and the second direction (Y) are perpendicular to each other.

28. The electric machine (100) of claim 27, characterized in that Further comprising a plug for plugging one of the first oil inlet (63) and the second oil inlet (64), and / or the plug is used for plugging one of the first oil outlet (65) and the second oil outlet (66).

29. The electric machine (100) of claim 27, characterized in that, Further comprising a junction box (40) connected with the motor shell (20), and in the second direction (Y), the junction box (40) is located between the first oil inlet (63) and the second oil inlet (64).

30. The motor (100) according to claim 29, wherein the motor shell (20) comprises a first shell (61) and a second shell (62), the first shell (61) and the second shell (62) are detachably connected in the axial direction, the junction box (40) comprises a first box body (81) and a second box body (82) detachably connected, the first box body (81) and the first shell (61) are an integral part of one-piece molding, and the second box body (82) and the second shell (62) are an integral part of one-piece molding.

31. An apparatus, comprising: The motor (100) according to any one of claims 24 to 30.

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