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 shell, a stator, a first rotor and a second rotor, the shell and the stator are in injection molding connection, and the stator is arranged between the first rotor and the second rotor. One axial side of the axial magnetic flux motor is suitable for driving the first load to rotate, the first load is suitable for driving water flow to flow, and the other axial side of the axial magnetic flux motor is suitable for driving the second load to rotate. According to the technical scheme, the same axial flux motor can drive the first load and the second load, 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 technical field of motors, 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 housing, a stator, a first rotor and a second rotor. The housing and the stator are injection-molded and connected, and the stator is arranged between the first rotor and the second rotor;

[0006] A first load, one axial side of the axial flux motor is adapted to drive the first load to rotate, and the first load is adapted to drive the water flow to flow; and

[0007] A second load, the other axial side of the axial flux motor is adapted to drive the second load to rotate.

[0008] In some embodiments of this application, the second load is adapted to drive a fluid to flow.

[0009] In some embodiments of this application, the first load is an impeller;

[0010] And / or, the second load is an impeller.

[0011] In some embodiments of this application, the first load is a centrifugal impeller;

[0012] And / or, the second load is a centrifugal impeller.

[0013] In some embodiments of this application, the axial flux motor includes a first bearing and a second bearing. The first rotor is fixedly connected to the first bearing to be adapted to rotate through the first bearing, and the first rotor is adapted to drive the first load to rotate. The second rotor is fixedly connected to the second bearing to be adapted to rotate through the second bearing, and the second rotor is adapted to drive the second load to rotate.

[0014] In some embodiments of the present application, the first rotor includes a first support plate and a first permanent magnet, and the first support plate, the first permanent magnet, and the first bearing are injection-molded and connected;

[0015] And / or, the second rotor includes a second support plate and a second permanent magnet, and the second support plate, the second permanent magnet, and the second bearing are injection-molded and connected.

[0016] In some embodiments of the present application, one of the first rotor and the first load is provided with a first convex portion and the other is provided with a first concave portion, and the first convex portion is inserted into the first concave portion so that the first rotor is adapted to drive the first load to rotate coaxially;

[0017] And / or, one of the second rotor and the second load is provided with a second convex portion and the other is provided with a second concave portion, and the second convex portion is inserted into the second concave portion so that the second rotor is adapted to drive the second load to rotate coaxially.

[0018] 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, the first load is connected to the first rotor, and the second load is connected to the second rotor.

[0019] In some embodiments of the present application, the axial flux motor includes a first bearing and a second bearing, the first rotor includes a first permanent magnet, the second rotor includes a second permanent magnet, the first load, the first permanent magnet, and the first bearing are fixedly connected to be rotatably arranged through the first bearing, and the second load, the second permanent magnet, and the second bearing are fixedly connected to be rotatably arranged through the second bearing.

[0020] In some embodiments of the present application, the first load, the first permanent magnet, and the first bearing are injection-molded and connected;

[0021] And / or, the second load, the second permanent magnet, and the second bearing are injection-molded and connected.

[0022] In some embodiments of the present 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, the first permanent magnet, and the first bearing are injection-molded and connected;

[0023] 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, the second permanent magnet, and the second bearing are injection-molded and connected.

[0024] In some embodiments of the present application, the axial flux motor includes a shaft body, and the shaft body is supported by the housing and passes through the first bearing and the second bearing.

[0025] 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;

[0026] 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.

[0027] A second aspect of the present application discloses a household appliance, and the household appliance includes the above-mentioned driving device.

[0028] Other advantages of the present application will be partially given in the following description, partially become obvious from the following description, or be understood through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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 use in 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, without creative efforts, other designs can also be obtained based on the structures shown in these drawings.

[0030] Figure 1 Schematic diagram of the driving device in some embodiments;

[0031] Figure 2 For Figure 1 Exploded view of the driving device shown;

[0032] Figure 3 For Figure 1 Cross-sectional view of the driving device shown;

[0033] Figure 4 For Figure 1 Schematic diagram of the combination of the housing, stator and shaft body of the driving device shown;

[0034] Figure 5 For Figure 1 Schematic diagram of the combination of the housing, stator and shaft body of the driving device shown (viewpoint is different from Figure 4 );

[0035] Figure 6 For Figure 1 Schematic diagram of the combination of the first rotor and the first bearing of the driving device shown;

[0036] Figure 7 For Figure 1Schematic diagram of the combination of the first rotor and the first bearing of the drive device shown (viewpoint is different from Figure 6 );

[0037] Figure 8 is Figure 1 Schematic diagram of the first load of the drive device shown;

[0038] Figure 9 is Figure 1 Schematic diagram of the first load of the drive device shown (viewpoint is different from Figure 8 );

[0039] Figure 10 is Figure 1 Schematic diagram of the combination of the second rotor and the second bearing of the drive device shown;

[0040] Figure 11 is Figure 1 Schematic diagram of the combination of the second rotor and the second bearing of the drive device shown (viewpoint is different from Figure 10 );

[0041] Figure 12 is Figure 1 Schematic diagram of the second load of the drive device shown;

[0042] Figure 13 is Figure 1 Schematic diagram of the second load of the drive device shown (viewpoint is different from Figure 12 );

[0043] Figure 14 is a schematic diagram of the drive device in some embodiments (the structure is different from Figure 1 );

[0044] Figure 15 is Figure 14 Exploded view of the drive device shown;

[0045] Figure 16 is Figure 14 Cross-sectional view of the drive device shown;

[0046] Figure 17 is Figure 14 Schematic diagram of the combination of the housing, stator and shaft body of the drive device shown;

[0047] Figure 18 is Figure 14 Schematic diagram of the combination of the housing, stator and shaft body of the drive device shown (viewpoint is different from Figure 17 );

[0048] Figure 19 is Figure 14 Schematic diagram of the combination of the first load, the first permanent magnet and the first bearing of the drive device shown;

[0049] Figure 20 The Figure 14 schematic diagram of the combination of the first load, the first permanent magnet and the first bearing of the driving device shown (the perspective is different from Figure 19 );

[0050] Figure 21 The Figure 19 structural cross-sectional view shown;

[0051] Figure 22 The Figure 14 schematic diagram of the combination of the second load, the second permanent magnet and the second bearing of the driving device shown;

[0052] Figure 23 The Figure 14 schematic diagram of the combination of the second load, the second permanent magnet and the second bearing of the driving device shown (the perspective is different from Figure 22 ).

[0053] Explanation of the reference numerals in the drawings:

[0054] Driving device 100, axial flux motor 1000, first rotor 1100, first permanent magnet 1110, first support plate 1120, first convex part 1121, second rotor 1200, second permanent magnet 1210, second support plate 1220, second convex part 1221, stator 1300, housing 1400, first concave cavity 1410, second concave cavity 1420, first bearing 1510, second bearing 1520, shaft body 1600, first load 2100, first part 2110, second part 2120, first concave part 2130, second load 2200, third part 2210, fourth part 2220, second concave part 2230.

[0055] The realization, functional features and advantages of the purpose of this application will be further described in conjunction with the embodiments and with reference to the accompanying drawings. Detailed implementation manners

[0056] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present application.

[0057] It should be noted that all the directional indications (such as up, down, left, right, front, back...) in the embodiments of the present application are only used to explain the relative positional relationship and movement conditions between components in a specific posture (as shown in the drawings). If the specific posture changes, the directional indications will also change accordingly.

[0058] In this application, unless otherwise clearly defined and limited, terms such as "connection" and "fixation" shall 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 limited. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0059] In addition, in this application, descriptions such as "first" and "second" are only for descriptive purposes and should not be construed as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, 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 ability of those of ordinary skill in the art to implement. 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 scope of protection required by this application.

[0060] A first aspect of this application provides a driving device 100, in combination with Figures 1 to 3 and Figures 14 to 16 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.

[0061] The axial flux motor 1000 is different from the radial flux motor. For the axial flux motor 1000, the magnetic flux lines mainly run along the axial direction, where the axial direction refers to the extension direction of the central axis (the shaft body 1600 in the figure) of the axial flux motor 1000. An output can be formed on one axial side of the axial flux motor 1000, and an output can also be formed on the other axial side 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 same axial flux motor 1000 can drive the first load 2100 and the second load 2200 to rotate. By such an arrangement, the number of motors is reduced, which is beneficial to reducing the space occupied by the driving device 100 and reducing costs. It can be understood that the so-called first load 2100 is a component that is 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.

[0062] 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 curved or straight, which facilitates the cooperation between 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 curved or straight, which facilitates the cooperation between 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. For example, both the first load 2100 and the second load 2200 drive the air flow, or both the first load 2100 and the second load 2200 drive the water flow, or the first load 2100 drives the air flow while the second load 2200 drives the water flow, or the first load 2100 drives the water flow while the second load 2200 drives the air flow.

[0063] Further, the first load 2100 is a centrifugal impeller, so that fluid can enter the first load 2100 along the axial direction of the first load 2100 and discharge along a substantially radial direction. In this way, when the first load 2100 is designed to be coaxial with the axial flux motor 1000, it is beneficial to reduce the space occupation 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 fluid can enter the second load 2200 along the axial direction of the second load 2200 and discharge along a substantially radial direction. In this way, when the second load 2200 is designed to be coaxial with the axial flux motor 1000, it is beneficial to reduce the space occupation in the axial direction and is more conducive to the arrangement of the structure.

[0064] Combined with Figures 1 to 3 and Figures 14 to 16 As shown, in some embodiments, 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 can rotate 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 output on one axial side of the axial flux motor 1000 is mainly formed by the first rotor 1100, and the output on the other axial side of the axial flux motor 1000 is mainly formed by the second rotor 1200. The first rotor 1100 corresponds to the first load 2100, and the second rotor 1200 corresponds to the second load 2200. When the stator 1300 is energized, it can interact with the first rotor 1100 and the second rotor 1200, thereby driving the first load 2100 and the second load 2200 to rotate. The first load 2100 and the second load 2200 are distributed on both axial sides of the stator 1300, which can also reduce or even avoid the eccentric wear of the shafting of the axial flux motor 1000 and can make the operation of the axial flux motor 1000 more stable.

[0065] Combined with Figure 2 , Figure 3 , Figure 15 and Figure 16As shown, in some embodiments, the stator 1300 is disposed on the housing 1400. By disposing the housing 1400, the housing 1400 can be connected and fixed to the installation area, thereby achieving support for the axial flux motor 1000. At the same time, the housing 1400 can also achieve wrapping protection for the stator 1300, thereby improving the protection capability of the stator 1300. Further, the housing 1400 is connected to the stator 1300 by injection molding, that is, at least a portion of the housing 1400 is injection molded, and is synchronously connected to the stator 1300 during the molding process, so that the stator 1300 is embedded in at least a portion 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, the housing 1400 is formed and the housing 1400 and the stator 1300 are combined together. Through the injection molding connection between the housing 1400 and the stator 1300, the housing 1400 and the stator 1300 are tightly combined, the structural stability and durability are improved, and the subsequent assembly process can be eliminated / reduced, thereby improving production efficiency. In addition, since the housing 1400 and the stator 1300 are injection-molded, it is conducive to the isolation of the space on both sides of the axial direction of the housing 1400, and the fluid is prevented from leaking from one axial side of the housing 1400 to the other axial side of the housing 1400 as much as possible. It can be understood that the stator 1300 includes an iron core and a winding arranged on the iron core. When the stator 1300 is energized, the winding is energized so that the winding can generate a changing magnetic field. A junction box can be set on the housing 1400, the winding is 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.

[0066] Combination Figures 1 to 3 , Figure 6 , Figure 7 , Figure 10 and Figure 11 As shown, in some embodiments, 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 many types of the first bearing 1510 and the second bearing 1520, which can be selected according to actual conditions. For example, the first bearing 1510 and the second bearing 1520 are both graphite bearings. The first bearing 1510 is connected and fixed to the first rotor 1100, so that the first bearing 1510 and the first rotor 1100 are combined together, and the second bearing 1520 is connected and fixed to the second rotor 1200, so that the second bearing 1520 and the second rotor 1200 are combined together. The first rotor 1100 can be rotated through the first bearing 1510, and the second rotor 1200 can be rotated through the second bearing 1520, so that the rotational friction resistance of the first rotor 1100 and the second rotor 1200 can be reduced.

[0067] Generally speaking, the first rotor 1100 and the second rotor 1200 need to be supported by the shaft body 1600. Specifically, 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 rotor 1100 and the second rotor 1200. 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 combination of the first bearing 1510 and the first rotor 1100 is assembled onto the shaft body 1600 (on the axial side of the stator 1300), and the combination of the second bearing 1520 and the second rotor 1200 is assembled onto the shaft body 1600 (on the other axial side of the stator 1300), which is convenient and fast. When the stator 1300 is powered on, the first rotor 1100 and the second rotor 1200 can be rotated. At this time, the first rotor 1100 and the second rotor 1200 do not need to drive the shaft body 1600 to rotate, realizing the load reduction of the first rotor 1100 and the second rotor 1200.

[0068] Figures 1 to 3 And Figures 6 to 7 shown, in some embodiments, the first rotor 1100 includes a first support plate 1120 and a first permanent magnet 1110. The first permanent magnet 1110 is disposed on the first support plate 1120, that is, the first permanent magnet 1110 is fixed to the first support plate 1120. The first support plate 1120 is a frame structure for supporting the first permanent magnet 1110, and there are various structural shapes, which are not limited herein. The material of the first permanent magnet 1110 can be rare earth permanent magnet material, ferrite permanent magnet material, alnico alloy, iron chromium cobalt alloy, etc., which are not limited herein. On this basis, the first bearing 1510 is designed to be fixedly connected to the first support plate 1120, and the first support plate 1120 also serves as the frame structure of the first bearing 1510, so that the first support plate 1120 simultaneously realizes the support for the first permanent magnet 1110 and the first bearing 1510. Since the first permanent magnet 1110 needs to interact with the magnetic field formed by the stator 1300, setting the first permanent magnet 1110 on the side of the first support plate 1120 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared with setting the first permanent magnet 1110 on the side of the first support plate 1120 facing away from the stator 1300.

[0069] The first support plate 1120 is injection-molded and connected to the first permanent magnet 1110, that is, at least part of the first support plate 1120 is injection-molded and synchronously connected to the first permanent magnet 1110 during the molding process, so that the first permanent magnet 1110 is embedded in at least part of the first support plate 1120. By setting it like this, the first support plate 1120 and the first permanent magnet 1110 are tightly combined, improving the structural stability and durability, reducing the number of components, and being able to eliminate / reduce subsequent assembly processes, thus improving production efficiency.

[0070] Similarly, the first support plate 1120 is injection-molded and connected to the first bearing 1510, that is, at least part of the first support plate 1120 is injection-molded and synchronously connected to the first bearing 1510 during the molding process, so that the first bearing 1510 is embedded in at least part of the first support plate 1120. By setting it like this, the first support plate 1120 and the first bearing 1510 are tightly combined, improving the structural stability and durability, reducing the number of components, and being able to eliminate / reduce subsequent assembly processes, thus improving production efficiency.

[0071] For example, place the first permanent magnet 1110 and the first bearing 1510 into the mold, inject plastic into the mold, and after the plastic is molded, it forms the first support plate 1120 and the first support plate 1120 is combined with the first permanent magnet 1110 and the first bearing 1510. Through the injection molding connection of the first support plate 1120, the first permanent magnet 1110, and the first bearing 1510, the first support plate 1120, 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 being able to eliminate / reduce subsequent assembly processes, thus improving production efficiency.

[0072] Figures 1 to 3 and Figures 10 to 11As shown, in some embodiments, the second rotor 1200 includes a second support plate 1220 and a second permanent magnet 1210. The second permanent magnet 1210 is disposed on the second support plate 1220, that is, the second permanent magnet 1210 is fixed to the second support plate 1220. The second support plate 1220 is a framework structure for supporting the second permanent magnet 1210, and there are various structural shapes, which are not limited herein. The material of the second permanent magnet 1210 can be a rare earth permanent magnet material, a ferrite permanent magnet material, an alnico alloy, a FeCrCo alloy, etc., which are not limited herein. On this basis, the second bearing 1520 is designed to be fixedly connected to the second support plate 1220, and the second support plate 1220 also serves as the framework structure of the second bearing 1520, so that the second support plate 1220 synchronously supports the second permanent magnet 1210 and the second bearing 1520. Since the second permanent magnet 1210 needs to interact with the magnetic field formed by the stator 1300, setting the second permanent magnet 1210 on the side of the second support plate 1220 facing the stator 1300 is beneficial to improving the efficiency of the axial flux motor 1000 compared with setting the second permanent magnet 1210 on the side of the second support plate 1220 facing away from the stator 1300.

[0073] The second support plate 1220 and the second permanent magnet 1210 are injection-molded and connected, that is, at least part of the second support plate 1220 is injection-molded, and is synchronously connected to the second permanent magnet 1210 during the molding process, so that the second permanent magnet 1210 is embedded in at least part of the second support plate 1220. By setting like this, the second support plate 1220 and the second permanent magnet 1210 are tightly combined, improving the structural stability and durability, reducing the number of components, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0074] Similarly, the second support plate 1220 and the second bearing 1520 are injection-molded and connected, that is, at least part of the second support plate 1220 is injection-molded, and is synchronously connected to the second bearing 1520 during the molding process, so that the second bearing 1520 is embedded in at least part of the second support plate 1220. By setting like this, the second support plate 1220 and the second bearing 1520 are tightly combined, improving the structural stability and durability, reducing the number of components, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0075] For example, place the second permanent magnet 1210 and the second bearing 1520 into a mold, inject plastic into the mold, and after the plastic is molded, it forms the second support plate 1220, and the second support plate 1220 is combined with the second permanent magnet 1210 and the second bearing 1520. Through the injection molding connection of the second support plate 1220, the second permanent magnet 1210, and the second bearing 1520, the second support plate 1220 is tightly integrated with the second permanent magnet 1210 and the second bearing 1520, reducing the number of parts, improving the structural stability and durability, and can eliminate / reduce subsequent assembly processes, improving production efficiency.

[0076] Combine Figure 2 、 Figure 3 、 Figures 6 to 13 As shown in Figures 6 to 13 , in some embodiments, one of the first rotor 1100 and the first load 2100 is provided with a first convex portion 1121, and the other of the first rotor 1100 and the first load 2100 is provided with a first concave portion 2130. The first convex portion 1121 is inserted into the first concave portion 2130 to realize the connection between the first rotor 1100 and the first load 2100, and the first rotor 1100 drives the first load 2100 to rotate coaxially. For example, the first convex portion 1121 is provided on the first rotor 1100, the first concave portion 2130 is provided on the first load 2100, and a plurality of first convex portions 1121 surround the rotation axis of the first rotor 1100. The first concave portion 2130 and the first convex portion 1121 correspond one by one. When the first rotor 1100 rotates, the first convex portion 1121 abuts against the first concave portion 2130 in the rotation direction, so as to drive the first load 2100 to rotate coaxially.

[0077] Similarly, one of the second rotor 1200 and the second load 2200 is provided with a second convex portion 1221, and the other of the second rotor 1200 and the second load 2200 is provided with a second concave portion 2230. The second convex portion 1221 is inserted into the second concave portion 2230 to realize the connection between the second rotor 1200 and the second load 2200, and the second rotor 1200 drives the second load 2200 to rotate coaxially. For example, the second convex portion 1221 is provided on the second rotor 1200, the second concave portion 2230 is provided on the second load 2200, and a plurality of second convex portions 1221 surround the rotation axis of the second rotor 1200. The second concave portion 2230 and the second convex portion 1221 correspond one by one. When the second rotor 1200 rotates, the second convex portion 1221 abuts against the second concave portion 2230 in the rotation direction, so as to drive the second load 2200 to rotate coaxially.

[0078] Combine Figures 1 to 5As shown, in some embodiments, the axial flux motor 1000 includes a shaft body 1600. The shaft body 1600 is supported by a housing 1400 and passes through a first bearing 1510 and a second bearing 1520. A first load 2100 is connected to a first rotor 1100, and a second load 2200 is connected to a second rotor 1200. The shaft body 1600 passes through the first bearing 1510 and the second bearing 1520. Since the first bearing 1510 is fixedly connected to the first rotor 1100 and the second bearing 1520 is fixedly connected to the second rotor 1200, the support for the first rotor 1100 and the second rotor 1200 can be achieved in this way. The first rotor 1100 can rotate around the shaft body 1600 through the first bearing 1510, and the second rotor 1200 can rotate around the shaft body 1600 through the second bearing 1520. In this embodiment, the first rotor 1100 is connected to the first load 2100, and the first rotor 1100 can transmit force to the first load 2100, so that when the first rotor 1100 rotates, it can drive the first load 2100 to rotate. Similarly, the second rotor 1200 is connected to the second load 2200, and the second rotor 1200 can transmit force to the second load 2200, so that when the second rotor 1200 rotates, it can drive the second load 2200 to rotate.

[0079] For example, the first load 2100 is sleeved on the shaft body 1600 and connected to the first rotor 1100. The connection can be achieved by using the cooperation form of the first recess 2130 and the first protrusion 1121 in the above text. In this way, when the first rotor 1100 rotates, it can drive the first load 2100 to rotate coaxially. The second load 2200 is sleeved on the shaft body 1600 and connected to the second rotor 1200. The connection can be achieved by using the cooperation form of the second recess 2230 and the second protrusion 1221 in the above text. In this way, when the second rotor 1200 rotates, it can drive the second load 2200 to rotate coaxially.

[0080] Combined with Figures 14 to 16 and Figures 19 to 23As shown, in some embodiments, the first rotor 1100 includes a first permanent magnet 1110, and 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 a support framework for the first permanent magnet 1110, such 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 a support framework for the second permanent magnet 1210, such that the second permanent magnet 1210 and the second load 2200 are combined into a rotor structure. By such an arrangement, 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. 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.

[0081] Furthermore, the first bearing 1510 is fixedly connected to the first load 2100, such 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, such that the second permanent magnet 1210, the second bearing 1520, and the second load 2200 are combined together. This is beneficial to the compact design of the driving device 100 and further reduces the space occupied. 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.

[0082] Generally speaking, the first structure and the second structure need to be supported by a shaft body 1600 to achieve rotation. Specifically, the axial flux motor 1000 includes a shaft body 1600. 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), as well as the support for the second load 2200 and the second rotor 1200 (the second permanent magnet 1210). As Figures 14 to 18As 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 a first structure. The second permanent magnet 1210, the second bearing 1520 and the second load 2200 are combined to form a 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.

[0083] Combine Figures 14 to 16 And Figures 19 to 23 As 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. 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.

[0084] Furthermore, in some embodiments, the first load 2100, the first permanent magnet 1110 and the first bearing 1510 are injection-molded and connected, that is, at least 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 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-molded 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.

[0085] 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 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 into at least 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.

[0086] Combined Figures 19 to 21 As 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 injection-mold the first load 2100 at one time. Therefore, the first load 2100 can be designed to be prepared by a method of 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 the second part 2120 is connected to the first permanent magnet 1110 and the first bearing 1510 during the injection-molding process of the second part 2120, and then the first part 2110 and the second part 2120 are welded (such as ultrasonic welding). In this way, it can not only meet the structural design of the first load 2100, but also ensure the bonding strength between the first load 2100, the first permanent magnet 1110 and the first bearing 1510 to a certain extent. When the first permanent magnet 1110 is arranged 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.

[0087] Similarly, combined Figure 22 and Figure 23As 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 a method of fixing split components by welding. For example, the second load 2200 includes a third part 2210 and a fourth part 2220. The third part 2210 is injection-molded, and the fourth part 2220 is connected to the second permanent magnet 1210 and the second bearing 1520 during the injection-molding process, and 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.

[0088] Combined Figures 14 to 18 As 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, and 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.

[0089] 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.

[0090] Combined with Figure 16 As shown, in some embodiments, the housing 1400 and the shaft body 1600 are injection-molded and connected. 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 and the stator 1300 are injection-molded and connected, that is, the housing 1400 and the stator 1300, the shaft body 1600 are injection-molded and connected, enhancing the bonding force between the housing 1400 and the stator 1300, 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, the shaft body 1600.

[0091] The second aspect of the present application discloses a household appliance. The household appliance 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. The floor sweeper 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 other types, which will not be elaborated here one by one.

[0092] The axial flux motor 1000 is different from the radial flux motor. For the axial flux motor 1000, the magnetic flux lines mainly run along the axial direction, where the axial direction refers to the extension direction of the central axis (shaft body 1600 in the figure) of the axial flux motor 1000. An output can be formed on one axial side of the axial flux motor 1000, and an output can also be formed on the other axial side of the axial flux motor 1000. The first load 2100 is matched with one axial side of the axial flux motor 1000, and the second load 2200 is matched with the other axial side of the axial flux motor 1000. The so-called matching 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 same axial flux motor 1000 can drive the first load 2100 and the second load 2200 to rotate. By such an arrangement, the number of motors is reduced, which is beneficial to reducing the space occupied by the driving device 100 and reducing costs. It can be understood that the so-called first load 2100 is a component that is 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.

[0093] 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.

[0094] 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 housing (1400), a stator (1300), a first rotor (1100) and a second rotor (1200), the housing (1400) and the stator (1300) are injection-molded and connected, and the stator (1300) is disposed between the first rotor (1100) and the second rotor (1200); A first load (2100), one axial side of the axial flux motor (1000) is adapted to drive the first load (2100) to rotate, and the first load (2100) is adapted to drive water flow; And A second load (2200), the other axial side of the axial flux motor (1000) is adapted to drive the second load (2200) to rotate.

2. The drive device (100) according to claim 1, characterized in that, The second load (2200) is adapted to drive fluid flow.

3. The drive device (100) according to claim 1, characterized in that, The first load (2100) is an impeller; And / or, the second load (2200) is an impeller.

4. The drive device (100) according to claim 1, characterized in that, The first load (2100) is a centrifugal impeller; And / or, the second load (2200) is a centrifugal impeller.

5. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) includes a first bearing (1510) and a second bearing (1520), the first rotor (1100) and the first bearing (1510) are fixedly connected to be adapted to rotate through the first bearing (1510), and the first rotor (1100) is adapted to drive the first load (2100) to rotate, the second rotor (1200) and the second bearing (1520) are fixedly connected to be adapted to rotate through the second bearing (1520), and the second rotor (1200) is adapted to drive the second load (2200) to rotate.

6. The drive device (100) according to claim 5, characterized in that, The first rotor (1100) includes a first support plate (1120) and a first permanent magnet (1110), and the first support plate (1120), the first permanent magnet (1110) and the first bearing (1510) are injection-molded and connected; And / or, the second rotor (1200) includes a second support plate (1220) and a second permanent magnet (1210), and the second support plate (1220), the second permanent magnet (1210) and the second bearing (1520) are injection-molded and connected.

7. The drive device (100) according to claim 5, characterized in that, One of the first rotor (1100) and the first load (2100) is provided with a first convex portion (1121) and the other is provided with a first concave portion (2130), and the first convex portion (1121) is inserted into the first concave portion (2130) so that the first rotor (1100) is adapted to drive the first load (2100) to rotate coaxially; And / or, one of the second rotor (1200) and the second load (2200) is provided with a second convex portion (1221) and the other is provided with a second concave portion (2230), and the second convex portion (1221) is inserted into the second concave portion (2230) so that the second rotor (1200) is adapted to drive the second load (2200) to rotate coaxially.

8. The drive device (100) according to claim 5, characterized in that, The axial flux motor (1000) includes a shaft body (1600) which is supported by the housing (1400) and passes through the first bearing (1510) and the second bearing (1520). The first load (2100) is connected to the first rotor (1100), and the second load (2200) is connected to the second rotor (1200).

9. The drive device (100) according to claim 1, characterized in that, The axial flux motor (1000) includes a first bearing (1510) and a second bearing (1520). The first rotor (1100) includes a first permanent magnet (1110), and the second rotor (1200) includes a second permanent magnet (1210). The first load (2100), the first permanent magnet (1110), and the first bearing (1510) are fixedly connected and are adapted to be rotatably arranged through the first bearing (1510). The second load (2200), the second permanent magnet (1210), and the second bearing (1520) are fixedly connected and are adapted to be rotatably arranged through the second bearing (1520).

10. The drive device (100) according to claim 9, characterized in that, The first load (2100) is injection-molded and connected to the first permanent magnet (1110) and the first bearing (1510). And / or, the second load (2200) is injection-molded and connected to the second permanent magnet (1210) and the second bearing (1520).

11. The drive device (100) according to claim 9, 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) is injection-molded and connected to the first permanent magnet (1110) and the first bearing (1510). 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) is injection-molded and connected to the second permanent magnet (1210) and the second bearing (1520).

12. The drive device (100) according to claim 9, characterized in that, The axial flux motor (1000) includes a shaft body (1600) which is supported by the housing (1400) and passes through the first bearing (1510) and the second bearing (1520).

13. The drive device (100) according to claim 5 or 9, characterized in that, The housing (1400) is provided with a first concave cavity (1410). The stator (1300) surrounds the first concave cavity (1410), and at least part of the first bearing (1510) is embedded in the first concave cavity (1410). And / or, the housing (1400) is provided with a second concave cavity (1420). The stator (1300) surrounds the second concave cavity (1420), and at least part of the second bearing (1520) is embedded in the second concave cavity (1420).

14. A household appliance, characterized in that, The household appliance includes the driving device (100) according to any one of claims 1 to 13.

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