Driving device and household appliance

Abstract

The utility model discloses a driving device and a household electrical appliance, the driving device comprises an axial magnetic flux motor, a first load and a second load, the axial magnetic flux motor comprises a first rotor, a second rotor, a stator, a first bearing, a second bearing and a shell, the shell and the stator are in injection molding connection, the stator is arranged between the first rotor and the second rotor, and the first bearing is arranged between the first rotor and the second rotor. The second rotor comprises a second permanent magnet, the first permanent magnet and the first bearing are fixedly connected with the first load, and the second permanent magnet and the second bearing are fixedly connected with the second load. The axial side of the axial magnetic flux motor can form output, the other axial side of the axial magnetic flux motor can also form output, driving of the first load and the second load can be achieved through the same axial magnetic flux motor, the number of motors is reduced, and reduction of space occupation of the driving device and reduction of cost are facilitated.

Description

Technical Field

[0001] This application relates to the field of motor technology, and particularly to a driving device and a household appliance. Background Art

[0002] In the related art, when it is necessary to drive two targets, two independent motors are often set up. One motor drives one target, and the other motor drives the other target, thus forming two sets of systems. Since two motors are set up, the volume occupied is relatively large and the cost is relatively high. Utility Model Content

[0003] This application aims to solve at least one of the technical problems in the related art to some extent. For this purpose, this application proposes a driving device.

[0004] To achieve the above object, this application discloses a driving device, which includes:

[0005] An axial flux motor, which includes a first rotor, a second rotor, a stator, a first bearing, a second bearing and a housing. The housing and the stator are injection-molded and connected. The stator is arranged between the first rotor and the second rotor. The first rotor includes a first permanent magnet, and the second rotor includes a second permanent magnet;

[0006] A first load, which is fixedly connected to the first permanent magnet and the first bearing so as to be rotatably arranged through the first bearing; and

[0007] A second load, which is fixedly connected to the second permanent magnet and the second bearing so as to be rotatably arranged through the second bearing.

[0008] In some embodiments of this application, the first permanent magnet is arranged on one side of the first load facing the stator;

[0009] And / or, the second permanent magnet is arranged on one side of the second load facing the stator.

[0010] In some embodiments of this application, the first load and the first permanent magnet, the first bearing are injection-molded and connected;

[0011] And / or, the second load and the second permanent magnet, the second bearing are injection-molded and connected.

[0012] In some embodiments of this application, the first load includes a first part and a second part. The first part and the second part are welded, and the second part and the first permanent magnet, the first bearing are injection-molded and connected;

[0013] And / or, the second load includes a third part and a fourth part, the third part and the fourth part are welded, and the fourth part is injection-molded and connected to the second permanent magnet and the second bearing.

[0014] In some embodiments of the present application, the housing is provided with a first concave cavity, the stator surrounds the first concave cavity, and at least part of the first bearing is embedded in the first concave cavity;

[0015] And / or, the housing is provided with a second concave cavity, the stator surrounds the second concave cavity, and at least part of the second bearing is embedded in the second concave cavity.

[0016] In some embodiments of the present application, the axial flux motor includes a shaft body, the shaft body is supported by the housing and passes through the first bearing and the second bearing. In some embodiments of the present application, the housing and the shaft body are injection-molded and connected.

[0017] In some embodiments of the present application, the first load is adapted to drive the fluid to flow;

[0018] And / or, the second load is adapted to drive the fluid to flow.

[0019] In some embodiments of the present application, the first load is a centrifugal impeller;

[0020] And / or, the second load is a centrifugal impeller.

[0021] The second aspect of the present application discloses a household appliance, and the household appliance includes the above-mentioned driving device.

[0022] Other advantages of the present application will be partially given in the following description, partially will become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other designs can be obtained based on the structures shown in these drawings without creative efforts.

[0024] Figure 1 Schematic diagram of the driving device in some embodiments;

[0025] Figure 2 Exploded view of the driving device in some embodiments;

[0026] Figure 3 Cross-sectional view of the driving device in some embodiments;

[0027] Figure 4 Schematic diagram of the combination of the housing, stator and shaft body in some embodiments;

[0028] Figure 5 Schematic diagram of the combination of the housing, stator and shaft body in some embodiments (with a different perspective from Figure 4 );

[0029] Figure 6 Schematic diagram of the combination of the first load, first permanent magnet and first bearing in some embodiments;

[0030] Figure 7 Schematic diagram of the combination of the first load, first permanent magnet and first bearing in some embodiments (with a different perspective from Figure 6 );

[0031] Figure 8 For Figure 6 the sectional view of the shown structure;

[0032] Figure 9 Schematic diagram of the combination of the second load, second permanent magnet and second bearing in some embodiments;

[0033] Figure 10 Schematic diagram of the combination of the second load, second permanent magnet and second bearing in some embodiments (with a different perspective from Figure 9 );

[0034] Explanation of the reference numerals in the drawings:

[0035] Drive device 100, axial flux motor 1000, first rotor 1100, first permanent magnet 1110, second rotor 1200, second permanent magnet 1210, stator 1300, housing 1400, first cavity 1410, second cavity 1420, first bearing 1510, second bearing 1520, shaft body 1600, first load 2100, first part 2110, second part 2120, second load 2200, third part 2210, fourth part 2220.

[0036] The realization, functional features and advantages of the purpose of this application will be further described with reference to the embodiments and the accompanying drawings. Detailed implementation manners

[0037] Next, the technical solutions in the embodiments of this application will be clearly and completely described with reference to the accompanying drawings in the embodiments of this application. Obviously, the described embodiments are only a part of the embodiments of this application, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in this application without making creative efforts shall fall within the protection scope of this application.

[0038] It should be noted that all the directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement conditions, etc. between components in a specific posture (as shown in the attached drawings). If the specific posture changes, the directional indications will also change accordingly.

[0039] In the present application, unless otherwise clearly specified and defined, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0040] In addition, in the present application, the descriptions such as "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present application.

[0041] A first aspect of the present application provides a driving device 100, in combination with Figures 1 to 3 As shown, in some embodiments, the driving device 100 includes an axial-flux motor 1000, a first load 2100, and a second load 2200. One axial side of the axial-flux motor 1000 is used to drive the first load 2100 to rotate, and the other axial side of the axial-flux motor 1000 drives the second load 2200 to rotate.

[0042] The axial-flux motor 1000 is different from the radial-flux motor. The magnetic flux lines of the axial-flux motor 1000 mainly extend along the axial direction, where the axial direction refers to the central axis of the axial-flux motor 1000 ( Figure 1In the extending direction of the shaft body 1600), outputs can be formed on both the axial sides of the axial flux motor 1000. The first load 2100 is engaged with one axial side of the axial flux motor 1000, and the second load 2200 is engaged with the other axial side of the axial flux motor 1000. The so-called engagement can be direct or indirect, that is, one axial side of the axial flux motor 1000 can transfer force to the first load 2100, and the other axial side of the axial flux motor 1000 can transfer force to the second load 2200. In this way, the first load 2100 and the second load 2200 can be driven to rotate by the same axial flux motor 1000. By such an arrangement, the number of motors is reduced, which is beneficial to reducing the space occupation and cost.

[0043] Specifically, the axial flux motor 1000 includes a housing 1400, a stator 1300, a first rotor 1100, and a second rotor 1200. The so-called first rotor 1100 and second rotor 1200 are the parts that are rotatable relative to the stator 1300. The first rotor 1100 is arranged on one axial side of the stator 1300, and the second rotor 1200 is arranged on the other axial side of the stator 1300, so that the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The stator 1300 is arranged on the housing 1400. By providing the housing 1400, the housing 1400 can be connected and fixed to the installation area, thereby realizing the support of the axial flux motor 1000. At the same time, the housing 1400 can also wrap and protect the stator 1300, improving the protection ability of the stator 1300. The housing 1400 and the stator 1300 are injection-molded and connected, that is, at least part of the housing 1400 is injection-molded and connected to the stator 1300 synchronously during the molding process, so that the stator 1300 is embedded in at least part of the housing 1400. For example, the stator 1300 is placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the housing 1400 and the housing 1400 and the stator 1300 are combined together. Through the injection-molded connection between the housing 1400 and the stator 1300, the housing 1400 and the stator 1300 are closely combined, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency. It is precisely because of the injection-molded connection between the housing 1400 and the stator 1300 that it is beneficial to realize the isolation of the spaces on both axial sides of the housing 1400. It can be understood that the stator 1300 includes an iron core and windings arranged on the iron core. When the stator 1300 is powered on, the windings are powered on, so that the windings can generate a changing magnetic field. A junction box can be arranged on the housing 1400, and the windings are connected to the junction box, and the wiring terminals of the controller are connected to the junction box, thereby realizing power supply and / or communication.

[0044] The first rotor 1100 includes a first permanent magnet 1110, and the second rotor 1200 includes a second permanent magnet 1210. The materials of the first permanent magnet 1110 and the second permanent magnet 1210 can be rare earth permanent magnet materials, ferrite permanent magnet materials, alnico alloys, Fe-Cr-Co alloys, etc., which are not limited in this embodiment. In this embodiment, the first permanent magnet 1110 is fixedly connected to the first load 2100. The first load 2100 not only has its own function but also serves as the support framework of the first permanent magnet 1110, so that the first permanent magnet 1110 and the first load 2100 are combined into a rotor structure. The second permanent magnet 1210 is fixedly connected to the second load 2200. The second load 2200 not only has its own function but also serves as the support framework of the second permanent magnet 1210, so that the second permanent magnet 1210 and the second load 2200 are combined into a rotor structure. By setting like this, the first rotor 1100 can cancel the design of the support structure for the first permanent magnet 1110 alone, and the second rotor 1200 can also cancel the design of the support structure for the second permanent magnet 1210 alone. Even it can be understood that the first rotor 1100 is the first permanent magnet 1110, and the second rotor 1200 is the second permanent magnet 1210. Compared with separately setting a support structure to support the first permanent magnet 1110 and the second permanent magnet 1210, this embodiment is beneficial to compressing the space occupied by the driving device 100 and is more conducive to the miniaturization design of the driving device 100.

[0045] On one axial side of the axial flux motor 1000, the output is mainly formed by the first rotor 1100 (the first permanent magnet 1110). On the other axial side of the axial flux motor 1000, the output is mainly formed by the second rotor 1200 (the second permanent magnet 1210). When the stator 1300 is energized, it can interact with the first rotor 1100 (the first permanent magnet 1110) and the second rotor 1200 (the second permanent magnet 1210), thereby driving the first rotor 1100 (the first permanent magnet 1110) and the second rotor 1200 (the second permanent magnet 1210) to rotate, causing the first load 2100 and the second load 2200 to rotate. Since the stator 1300 is located between the first rotor 1100 and the second rotor 1200, and the first load 2100 is fixedly connected to the first permanent magnet 1110, and the second load 2200 is fixedly connected to the second permanent magnet 1210, the first load 2100 is arranged on one axial side of the stator 1300, and the second load 2200 is arranged on the other axial side of the stator 1300. By distributing the first load 2100 and the second load 2200 on both axial sides of the stator 1300, the eccentric wear of the shafting of the axial flux motor 1000 can be reduced or even avoided, and the operation of the axial flux motor 1000 can be made more stable. It can be understood that the so-called first load 2100 is a component driven by the axial flux motor 1000 to generate an action. The first load 2100 can be the final target object or a transmission part between the final target object and the axial flux motor 1000. Similarly, the second load 2200 is the same, and will not be repeated here.

[0046] Furthermore, the axial flux motor 1000 includes a first bearing 1510 and a second bearing 1520. The main functions of the first bearing 1510 and the second bearing 1520 are to support the mechanical rotating body and reduce the friction coefficient during the movement. There are various types of the first bearing 1510 and the second bearing 1520, which can be selected according to the actual situation. For example, both the first bearing 1510 and the second bearing 1520 are graphite bearings. The first bearing 1510 is fixedly connected to the first load 2100, so that the first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined together. The second bearing 1520 is fixedly connected to the second load 2200, so that the second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined together, which is beneficial to the compact design of the driving device 100 and further reduces the space occupation. The first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined to form a first structure, and the first structure can rotate through the first bearing 1510. The second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined to form a second structure, and the second structure can rotate through the second bearing 1520.

[0047] Generally speaking, the first structure and the second structure need to be supported by the shaft body 1600 to achieve rotation. Specifically, the axial flux motor 1000 includes a shaft body 1600, which is supported on the housing 1400 and passes through the first bearing 1510 and the second bearing 1520. In this way, the support for the first load 2100 and the first rotor 1100 (the first permanent magnet 1110), as well as the support for the second load 2200 and the second rotor 1200 (the second permanent magnet 1210) can be realized. As Figures 1 to 5 shown, the shaft body 1600 passes through the housing 1400 and the stator 1300 and is fixedly connected to the housing 1400 to be supported on the housing 1400. The first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined to form the first structure, and the second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined to form the second structure. The first bearing 1510 of the first structure is sleeved on the shaft body 1600 for rotatable setting, and the second bearing 1520 of the second structure is sleeved on the shaft body 1600 for rotatable setting. In this way, the assembly of the first structure and the second structure can be realized conveniently and quickly. When the stator 1300 is powered on, the first structure can rotate relative to the shaft body 1600, and the second structure can rotate relative to the shaft body 1600.

[0048] Combined Figures 1 to 3 with Figures 6 to 10 shown, in some embodiments, the first permanent magnet 1110 is arranged on the side of the first load 2100 facing the stator 1300. Arranging the first permanent magnet 1110 on the side of the first load 2100 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared with arranging the first permanent magnet 1110 on the side of the first load 2100 facing away from the stator 1300.

[0049] Similarly, the second permanent magnet 1210 is arranged on the side of the second load 2200 facing the stator 1300. Arranging the second permanent magnet 1210 on the side of the second load 2200 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared with arranging the second permanent magnet 1210 on the side of the second load 2200 facing away from the stator 1300.

[0050] Further, in some embodiments, the first load 2100 is injection-molded and connected to the first permanent magnet 1110 and the first bearing 1510, that is, at least a part of the first load 2100 is injection-molded, and is synchronously connected to the first permanent magnet 1110 and the first bearing 1510 during the molding process, so that the first permanent magnet 1110 and the first bearing 1510 are embedded in at least a part of the first load 2100. For example, the first permanent magnet 1110 and the first bearing 1510 are placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the first load 2100 and the first load 2100 is combined with the first permanent magnet 1110 and the first bearing 1510. Through the injection-molding connection of the first load 2100, the first permanent magnet 1110, and the first bearing 1510, the first load 2100, the first permanent magnet 1110, and the first bearing 1510 are tightly combined into one body, reducing the number of parts, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0051] Similarly, the second load 2200 is injection-molded and connected to the second permanent magnet 1210 and the second bearing 1520, that is, at least a part of the second load 2200 is injection-molded, and is synchronously connected to the second permanent magnet 1210 and the second bearing 1520 during the molding process, so that the second permanent magnet 1210 and the second bearing 1520 are embedded in at least a part of the second load 2200. For example, the second permanent magnet 1210 and the second bearing 1520 are placed in a mold, and plastic is injected into the mold. After the plastic is molded, it forms the second load 2200 and the second load 2200 is combined with the second permanent magnet 1210 and the second bearing 1520. Through the injection-molding connection of the second load 2200, the second permanent magnet 1210, and the second bearing 1520, the second load 2200, the second permanent magnet 1210, and the second bearing 1520 are tightly combined into one body, reducing the number of parts, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0052] Combined Figure 2 、 Figure 3 and Figures 6 to 8As shown, in some embodiments, the first load 2100 includes a first part 2110 and a second part 2120. The first part 2110 and the second part 2120 are welded, and the second part 2120 is injection-molded and connected to the first permanent magnet 1110 and the first bearing 1510. It can be understood that it may not be convenient to integrally injection-mold the first load 2100. Therefore, the first load 2100 can be designed to be prepared by welding and fixing split components. For example, the first load 2100 includes a first part 2110 and a second part 2120. The first part 2110 is injection-molded, and during the injection-molding process of the second part 2120, it is connected to the first permanent magnet 1110 and the first bearing 1510. Then, the first part 2110 and the second part 2120 are welded (such as ultrasonic welding). In this way, both the structural design of the first load 2100 can be satisfied, and to a certain extent, the bonding strength between the first load 2100 and the first permanent magnet 1110 and the first bearing 1510 can be ensured. When the first permanent magnet 1110 is disposed on the side of the first load 2100 facing the stator 1300, the second part 2120 needs to be designed between the first part 2110 and the stator 1300.

[0053] Similarly, in combination with Figure 2 、 Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments, the second load 2200 includes a third part 2210 and a fourth part 2220. The third part 2210 and the fourth part 2220 are welded, and the fourth part 2220 is injection-molded and connected to the second permanent magnet 1210 and the second bearing 1520. It can be understood that it may not be convenient to integrally injection-mold the second load 2200. Therefore, the second load 2200 can be designed to be prepared by welding and fixing split components. For example, the second load 2200 includes a third part 2210 and a fourth part 2220. The third part 2210 is injection-molded, and during the injection-molding process of the fourth part 2220, it is connected to the second permanent magnet 1210 and the second bearing 1520. Then, the third part 2210 and the fourth part 2220 are welded (such as ultrasonic welding). In this way, both the structural design of the second load 2200 can be satisfied, and to a certain extent, the bonding strength between the second load 2200 and the second permanent magnet 1210 and the second bearing 1520 can be ensured. When the second permanent magnet 1210 is disposed on the side of the second load 2200 facing the stator 1300, the fourth part 2220 needs to be designed between the third part 2210 and the stator 1300.

[0054] In combination with Figures 3 to 5As shown, in some embodiments, the housing 1400 is provided with a first concave cavity 1410. For example, the first concave cavity 1410 is provided on the side of the housing 1400 facing the first rotor 1100, and the stator 1300 surrounds the first concave cavity 1410. At least part of the first bearing 1510 is embedded in the first concave cavity 1410. Specifically, the stator 1300 has an annular structure, so that a certain space is surrounded by the stator 1300. Since the housing 1400 and the stator 1300 are injection-molded and connected, when the first concave cavity 1410 is provided on the side of the housing 1400 facing the first rotor 1100, the first concave cavity 1410 can occupy at least part of the space surrounded by the stator 1300, and at least part of the first bearing 1510 is embedded in the first concave cavity 1410. In this way, the axial space occupied by the driving device 100 is further reduced, which is more conducive to miniaturization.

[0055] Similarly, the housing 1400 is provided with a second concave cavity 1420. For example, the second concave cavity 1420 is provided on the side of the housing 1400 facing the second rotor 1200, and the stator 1300 surrounds the second concave cavity 1420. At least part of the second bearing 1520 is embedded in the second concave cavity 1420. Specifically, the stator 1300 has an annular structure, so that a certain space is surrounded by the stator 1300. Since the housing 1400 and the stator 1300 are injection-molded and connected, when the second concave cavity 1420 is provided on the side of the housing 1400 facing the second rotor 1200, the second concave cavity 1420 can occupy at least part of the space surrounded by the stator 1300, and at least part of the second bearing 1520 is embedded in the second concave cavity 1420. In this way, the axial space occupied by the driving device 100 is further reduced, which is more conducive to miniaturization.

[0056] In some embodiments, the first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined to form a first structure, and the second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined to form a second structure. The positions of the first structure and the second structure can be interchanged. In this way, the first structure and the second structure can be made the same, reducing the types of materials. When assembling, it is not necessary to distinguish between the first structure and the second structure, which is more conducive to the assembly process.

[0057] Combined Figures 3 to 5As shown, in some embodiments, the housing 1400 is injection-molded and connected to the shaft body 1600. Specifically, the shaft body 1600 is supported by the housing 1400 in various ways. For example, the shaft body 1600 and the housing 1400 are connected and fixed by interference fit, screw fastening, etc. In this embodiment, the housing 1400 and the shaft body 1600 are injection-molded and connected to achieve connection and fixation, further reducing the number of components. As can be seen from the above, the housing 1400 is also injection-molded and connected to the stator 1300, that is, the housing 1400 is injection-molded and connected to the stator 1300 and the shaft body 1600, enhancing the bonding force between the housing 1400, the stator 1300, and the shaft body 1600, improving the structural stability and durability, and further improving the production efficiency. For example, the stator 1300 and the shaft body 1600 are placed in a mold, and then plastic is injected into the mold. After the plastic is molded, it forms the housing 1400 and the housing 1400 is combined with the stator 1300 and the shaft body 1600.

[0058] Combined Figures 1 to 3 And Figures 6 to 10 As shown, in some embodiments, the first load 2100 is used to drive the fluid to flow, that is, the axial flux motor 1000 drives the first load 2100 to rotate, thereby driving the fluid to flow. The flow of the fluid mainly occurs along the flow channel. The flow channel can be bent or straight, so as to facilitate the cooperation of the flow channel, the first load 2100, and the axial flux motor 1000. Similarly, the second load 2200 is used to drive the fluid to flow, that is, the axial flux motor 1000 drives the second load 2200 to rotate, thereby driving the fluid to flow. The flow of the fluid mainly occurs along the flow channel. The flow channel can be bent or straight, so as to facilitate the cooperation of the flow channel, the second load 2200, and the axial flux motor 1000. For example, the first load 2100 is an impeller, and the second load 2200 is also an impeller. In this way, the first load 2100 can be coaxially arranged with the axial flux motor 1000, and the second load 2200 can be coaxially arranged with the axial flux motor 1000. The rotation of the impeller drives the fluid to flow. It can be understood that the fluid includes but is not limited to gases and liquids. The sizes / structures of the first load 2100 and the second load 2200 can be the same or different.

[0059] Furthermore, the first load 2100 is a centrifugal impeller, so that the fluid can enter the first load 2100 along the axial direction of the first load 2100 and discharge along the approximate radial direction. In this way, when the first load 2100 is designed to be coaxially arranged with the axial flux motor 1000, it is beneficial to reduce the space occupied in the axial direction and is more conducive to the arrangement of the structure. Similarly, the second load 2200 is a centrifugal impeller, so that the fluid can enter the second load 2200 along the axial direction of the second load 2200 and discharge along the approximate radial direction. In this way, when the second load 2200 is designed to be coaxially arranged with the axial flux motor 1000, it is beneficial to reduce the space occupied in the axial direction and is more conducive to the arrangement of the structure.

[0060] The second aspect of the present application discloses a household appliance, which includes the above-mentioned driving device 100. The driving device 100 includes an axial-flux motor 1000, a first load 2100, and a second load 2200. One axial side of the axial-flux motor 1000 is used to drive the first load 2100 to rotate, and the other axial side of the axial-flux motor 1000 drives the second load 2200 to rotate. For example, the household appliance is a floor sweeper, which has two rotatable brush heads. One brush head is regarded as the first load 2100, and the other brush head is regarded as the second load 2200. Of course, the household appliance can also be of other types, which will not be elaborated here one by one.

[0061] The axial-flux motor 1000 includes a housing 1400, a stator 1300, a first rotor 1100, a second rotor 1200, a first bearing 1510, a second bearing 1520, and a shaft body 1600. The first rotor 1100 is arranged on one axial side of the stator 1300, and the second rotor 1200 is arranged on the other axial side of the stator 1300, so that the stator 1300 is located between the first rotor 1100 and the second rotor 1200. The stator 1300 is arranged on the housing 1400. By providing the housing 1400, the housing 1400 can be connected and fixed to the installation area, thereby realizing the support of the axial-flux motor 1000. At the same time, the housing 1400 can also wrap and protect the stator 1300, improving the protection ability of the stator 1300. The housing 1400 and the stator 1300 are injection-molded and connected, that is, at least part of the housing 1400 is injection-molded, and is connected to the stator 1300 synchronously during the molding process, so that the stator 1300 is embedded in at least part of the housing 1400. Through the injection-molded connection between the housing 1400 and the stator 1300, the housing 1400 and the stator 1300 are tightly combined, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency. It is precisely because of the injection-molded connection between the housing 1400 and the stator 1300 that it is beneficial to isolate the spaces on both axial sides of the housing 1400.

[0062] The first rotor 1100 includes a first permanent magnet 1110. The second rotor 1200 includes a second permanent magnet 1210. The first permanent magnet 1110 is fixedly connected to the first load 2100. The first load 2100 not only has its own function but also serves as the support framework for the first permanent magnet 1110, enabling the first permanent magnet 1110 and the first load 2100 to form a rotor structure. The second permanent magnet 1210 is fixedly connected to the second load 2200. The second load 2200 not only has its own function but also serves as the support framework for the second permanent magnet 1210, enabling the second permanent magnet 1210 and the second load 2200 to form a rotor structure. By such an arrangement, the first rotor 1100 can eliminate the design of a separate support structure for the first permanent magnet 1110, and the second rotor 1200 can also eliminate the design of a separate support structure for the second permanent magnet 1210. It can even be understood that the first rotor 1100 is the first permanent magnet 1110, and the second rotor 1200 is the second permanent magnet 1210. Compared with separately arranging a support structure to support the first permanent magnet 1110 and the second permanent magnet 1210, this embodiment is beneficial to compressing the space occupied by the driving device 100 and is more conducive to the miniaturization design of the driving device 100.

[0063] The first bearing 1510 is fixedly connected to the first load 2100, so that the first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined together. The second bearing 1520 is fixedly connected to the second load 2200, so that the second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined together, which is beneficial to the compact design of the driving device 100 and further reduces the space occupation. The shaft body 1600 is supported on the housing 1400 and passes through the first bearing 1510 and the second bearing 1520, so as to realize the support for the first load 2100 and the first rotor 1100 (the first permanent magnet 1110), and the support for the second load 2200 and the second rotor 1200 (the second permanent magnet 1210). The first permanent magnet 1110, the first bearing 1510 and the first load 2100 are combined to form a first structure, and the second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined to form a second structure. When the stator 1300 is energized, the first structure rotates relative to the shaft body 1600, and the second structure rotates relative to the shaft body 1600.

[0064] It can be understood that the driving device 100 of the household appliance in this embodiment adopts the technical solution of the above embodiment, and thus at least has the beneficial effects brought by the technical solution of the above embodiment, which will not be repeated here.

[0065] The above are only the preferred embodiments of the present application, and do not limit the patent scope of the present application. Any equivalent structural transformation made under the concept of the present application by using the content of the specification and drawings of the present application, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present application.

Claims

1. A driving device (100), characterized in that, Comprising: An axial flux motor (1000), the axial flux motor (1000) includes a first rotor (1100), a second rotor (1200), a stator (1300), a first bearing (1510), a second bearing (1520) and a housing (1400), the housing (1400) and the stator (1300) are injection-molded and connected, the stator (1300) is disposed between the first rotor (1100) and the second rotor (1200), the first rotor (1100) includes a first permanent magnet (1110), and the second rotor (1200) includes a second permanent magnet (1210); A first load (2100), the first load (2100), the first permanent magnet (1110) and the first bearing (1510) are connected and fixed to be rotatably disposed through the first bearing (1510); And A second load (2200), the second load (2200), the second permanent magnet (1210) and the second bearing (1520) are connected and fixed to be rotatably disposed through the second bearing (1520).

2. The drive device (100) according to claim 1, characterized in that, The first permanent magnet (1110) is disposed on a side of the first load (2100) facing the stator (1300); And / or, the second permanent magnet (1210) is disposed on a side of the second load (2200) facing the stator (1300).

3. The drive device (100) according to claim 1, characterized in that, The first load (2100) and the first permanent magnet (1110), the first bearing (1510) are injection-molded and connected; And / or, the second load (2200) and the second permanent magnet (1210), the second bearing (1520) are injection-molded and connected.

4. The drive device (100) according to claim 3, characterized in that, The first load (2100) includes a first part (2110) and a second part (2120), the first part (2110) and the second part (2120) are welded, and the second part (2120) and the first permanent magnet (1110), the first bearing (1510) are injection-molded and connected; And / or, the second load (2200) includes a third part (2210) and a fourth part (2220), the third part (2210) and the fourth part (2220) are welded, and the fourth part (2220) and the second permanent magnet (1210), the second bearing (1520) are injection-molded and connected.

5. The drive device (100) according to claim 1, characterized in that, The housing (1400) is provided with a first cavity (1410), the stator (1300) surrounds the first cavity (1410), and at least a part of the first bearing (1510) is embedded in the first cavity (1410); And / or, the housing (1400) is provided with a second cavity (1420), the stator (1300) surrounds the second cavity (1420), and at least a part of the second bearing (1520) is embedded in the second cavity (1420).

6. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) includes a shaft body (1600), and the shaft body (1600) is supported by the housing (1400) and passes through the first bearing (1510) and the second bearing (1520).

7. The drive device (100) according to claim 6, characterized in that, The housing (1400) and the shaft body (1600) are injection-molded and connected.

8. The drive device (100) according to claim 1, characterized in that, The first load (2100) is adapted to drive fluid flow; and / or, the second load (2200) is adapted to drive fluid flow.

9. The drive device (100) according to claim 8, characterized in that, The first load (2100) is a centrifugal impeller; and / or, the second load (2200) is a centrifugal impeller.

10. A household appliance, characterized in that, Comprising the drive device (100) according to any one of claims 1 to 9.

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