Cleaning modules and cleaning equipment

Abstract

This application relates to the field of cleaning technology, specifically providing a cleaning module and a cleaning device. The cleaning module includes a cleaning component and a direct-drive motor. The direct-drive motor includes a rotor assembly and a stator assembly, with the stator assembly disposed within the rotor assembly and the cleaning component fitted outside the rotor assembly; the rotor assembly can rotate relative to the stator assembly, thereby driving the cleaning component to rotate. In the cleaning module and cleaning device provided in this application, the cleaning component is directly fitted onto the rotor assembly of the direct-drive motor, and the rotation of the rotor assembly causes the cleaning component to rotate with the rotor assembly. Compared to related technologies where the motor uses mechanical transmission devices such as reducers, the embodiments of this application simplify the structure of the cleaning module.

Description

Technical Field

[0001] This application relates to the field of cleaning technology, and more particularly to a cleaning module and cleaning equipment. Background Technology

[0002] In related technologies, cleaning equipment uses a motor to drive the cleaning components to rotate, thereby cleaning the floor. Typically, this is configured so that the motor drives a connecting structure to rotate, which in turn drives the cleaning components. This requires a large number of parts for assembly, increasing structural complexity. Utility Model Content

[0003] In view of this, embodiments of this application aim to provide a cleaning module that simplifies the structure of the cleaning module. The cleaning module includes: a cleaning component; a direct drive motor including a rotor assembly and a stator assembly, the stator assembly being disposed within the rotor assembly, and the cleaning component being sleeved outside the rotor assembly; the rotor assembly is rotatable relative to the stator assembly, thereby driving the cleaning component to rotate.

[0004] In some embodiments, a first end of the stator assembly is located within the rotor assembly, a second end of the stator assembly is at least partially exposed outside the rotor assembly, and the rotor assembly is rotatably connected to the stator assembly.

[0005] In some embodiments, the direct drive motor further includes a shaft that passes through and is rotatably connected to the stator assembly, the output end of the shaft being fixedly connected to the rotor assembly and at least partially exposed in the rotor assembly, and the non-output end of the shaft being located inside the second end of the stator assembly.

[0006] In some embodiments, the housing rotor assembly includes a housing and a rotor core, the housing comprising:

[0007] The housing has a first mounting hole and a second mounting hole, the diameter of the first mounting hole being smaller than the diameter of the second mounting hole. The cleaning component is sleeved on the outside of the housing. The rotor core is located inside the housing and is fixedly connected to the housing. The stator assembly is disposed inside the rotor core. The output end of the rotating shaft passes through the first mounting hole and is fixedly connected to the housing. The end cover has a third mounting hole. The end cover is disposed in the second mounting hole and is fixedly connected to the housing. The second end of the stator assembly passes through the third mounting hole. The end cover is rotatably connected to the second end of the stator assembly.

[0008] In some embodiments, the cleaning module further includes:

[0009] A first seal is disposed between the cleaning assembly and the end cap; and / or,

[0010] A second seal is disposed between the stator assembly and the end cap.

[0011] In some embodiments, the end cap includes:

[0012] The end plate has the third mounting hole;

[0013] The outer cylinder has an annular groove at its inner end along its outer periphery. The outer shell is fitted into the annular groove. The end plate is disposed inside the outer cylinder and fixedly connected to the outer cylinder. The first sealing element is disposed between the cleaning component and the outer end of the outer cylinder.

[0014] In some embodiments, the direct drive motor further includes a first bearing, and the end cover further includes:

[0015] A first inner cylinder is disposed on the inner side of the end plate, and a first annular cavity is formed between the first inner cylinder and the stator assembly, and the first bearing is disposed in the first annular cavity;

[0016] The second inner cylinder is disposed on the outside of the end plate, and a second annular cavity is formed between the second inner cylinder and the stator assembly. The second seal is disposed in the second annular cavity.

[0017] In some embodiments, the end cap further includes:

[0018] Multiple reinforcing ribs are disposed on the end plate and are circumferentially spaced between the outer cylinder and the second inner cylinder.

[0019] In some embodiments, the cleaning module further includes:

[0020] A connector is fixedly connected to the output end of the rotating shaft, and the cleaning component is sleeved on the rotor assembly and rigidly connected to the connector.

[0021] In some embodiments, the connector has at least two claws arranged circumferentially, and the cleaning assembly includes:

[0022] Cleaning parts;

[0023] A support assembly, wherein the cleaning component is disposed outside the support assembly, and the support assembly is sleeved outside the rotor assembly;

[0024] A retainer is disposed within the bracket assembly. The retainer has at least two slots spaced apart circumferentially. The claws are respectively inserted into the corresponding slots so that the cleaning assembly and the connector can rotate synchronously.

[0025] In some embodiments, the support assembly includes:

[0026] A support cylinder, with the cleaning component disposed outside the support cylinder;

[0027] The mounting plate is disposed inside the support cylinder and fixedly connected to the support cylinder, and the card holder is fixedly connected to the mounting plate;

[0028] A retaining ring is detachably disposed at one end of the support cylinder to abut against the end of the rotor assembly located at the second end of the stator assembly.

[0029] In some embodiments, the direct drive motor further includes:

[0030] The second bearing is disposed between the rotating shaft and the first end of the stator assembly;

[0031] A third bearing is disposed between the rotating shaft and the second end of the stator assembly;

[0032] A baffle plate is disposed on the outside of the third bearing and fixed to the rotating shaft.

[0033] In some embodiments, the stator assembly includes a stator core having a central channel through which the rotating shaft passes;

[0034] The central passage includes:

[0035] The first hole section, the second bearing is disposed in the first hole section;

[0036] The third bearing is disposed in the second hole section;

[0037] An intermediate hole section is connected between the first hole section and the second hole section. The inner diameter of the intermediate hole section is smaller than the inner diameter of the first hole section and larger than the outer diameter of the rotating shaft. The inner diameter of the second hole section is larger than the inner diameter of the intermediate hole section and smaller than the inner diameter of the first hole section.

[0038] In some embodiments, the stator assembly includes:

[0039] The stator core has a central channel and a through hole along the axial direction. The rotating shaft passes through the central channel, and the through hole is used to pass through the conductor.

[0040] The coil winding is wound around the stator core.

[0041] In some embodiments, the cleaning module includes:

[0042] A sensor magnetic ring is disposed in one of the rotor assembly and the stator assembly;

[0043] A position sensor is disposed in one of the rotor assembly and the stator assembly, the position sensor and the sensor magnetic ring at least partially overlap in axial projection.

[0044] A cleaning device, comprising:

[0045] Equipment body;

[0046] The cleaning module described in any one of the embodiments of this application is disposed on the main body of the device.

[0047] The cleaning module and cleaning equipment provided in this application embodiment have a cleaning component directly mounted on the rotor assembly of a direct drive motor. The rotation of the rotor assembly causes the cleaning component to rotate along with it. The direct drive motor directly drives the cleaning component to rotate, eliminating the need for traditional transmission devices such as reducers. This simplifies the structure of the cleaning module, improves transmission efficiency, reduces installation and maintenance costs, and reduces noise generated during operation, thus enhancing the user experience. Attached Figure Description

[0048] Figure 1 This is a schematic diagram of the structure of a cleaning device according to one embodiment of this application;

[0049] Figure 2 for Figure 1 A partial structural diagram of the cleaning equipment shown;

[0050] Figure 3 This is a schematic diagram of the structure of a cleaning module in one embodiment of this application;

[0051] Figure 4 This is a schematic diagram of the direct drive motor and connector in one embodiment of this application;

[0052] Figure 5 for Figure 4 A schematic diagram of the direct drive motor and connector from another perspective;

[0053] Figure 6 for Figure 5 A schematic diagram of the AA cross-sectional structure;

[0054] Figure 7 for Figure 6 A magnified structural diagram at point B;

[0055] Figure 8 for Figure 6 A magnified structural diagram at point C;

[0056] Figure 9 This is a schematic diagram of the stator core structure in one embodiment of this application;

[0057] Figure 10 for Figure 9 A schematic diagram of the stator core from another perspective;

[0058] Figure 11 for Figure 10 Schematic diagram of the DD cross-sectional structure;

[0059] Figure 12 This is a schematic diagram of the end cap structure in one embodiment of this application;

[0060] Figure 13 This is a partial structural diagram of a cleaning component in one embodiment of this application;

[0061] Figure 14 for Figure 13 A schematic diagram of the EE cross-sectional structure;

[0062] Figure 15 for Figure 13 A schematic diagram of the FF cross-sectional structure;

[0063] Figure 16 for Figure 13 A schematic diagram of the cross-sectional structure of the GG.

[0064] Figure 17 This is a schematic diagram of the cleaning device in another embodiment of this application.

[0065] Explanation of reference numerals in the attached figures

[0066] 100. Cleaning module; 10. Cleaning component; 11. Cleaning part; 12. Bracket assembly; 121. Support cylinder; 122. Coupling; 123. Retaining ring; 124. Mounting plate; 13. Card holder; 13a. Card slot; 131. Card post; 14. Fastener; 20. Direct drive motor; 21. Rotor assembly; 211. Rotor core; 212. Shaft; 2121. Output end; 2122. Non-output end 2123, Shaft body; 2124, convex ring; 2125, second convex ring; 22, Stator assembly; 22a, third annular cavity; 221, Stator core; 221a, through hole; 221b, central channel; 221b1, first hole section; 221b2, second hole section; 221b3, central hole section; 2211, Stator body; 2212, first shaft section; 2213, second shaft section; 2214 222. Protruding section; 223. Coil winding; 224. First end; 225. Second end; 24. Housing; 241. Outer shell; 241a. First mounting hole; 241b. Second mounting hole; 2411. Mounting post; 242. End cap; 242a. Third mounting hole; 242b. First annular cavity; 242c. Second annular cavity; 2421. End plate; 2422. Outer cylinder; 2422a. Annular groove; 2423. First inner cylinder; 2424. Second inner cylinder; 2425. Reinforcing rib; 244. Baffle; 2431. First bearing; 2432. Second bearing; 2433. Third bearing; 30. First seal; 40. Second seal; 50. Connector; 51. Claw; 60. Sensor magnetic ring; 70. Mounting plate; 200. Cleaning equipment; 210. Equipment body; 220. Mounting arm; X. Axial direction. Detailed Implementation

[0067] The embodiments of this application will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this application, but should not be used to limit the scope of this application.

[0068] It should be noted that in the embodiments of this application, the orientations or positional relationships such as "upper" and "lower" are based on the orientations or positional relationships shown in the accompanying drawings. It should be understood that these orientational terms are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The application will be further described in detail below with reference to the accompanying drawings and specific embodiments. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0069] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the term "connection" should be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0070] In the embodiments of this application, unless otherwise expressly specified and limited, the first feature "on" the second feature may be in direct contact with the first feature and the second feature, or indirect contact between the first feature and the second feature through an intermediate medium.

[0071] In the description of this specification, references to terms such as "some embodiments," "exemplary," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the embodiments of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine the different embodiments or examples described in this application, as well as the features of those different embodiments or examples.

[0072] In related technologies, cleaning equipment uses a motor to drive the cleaning components to rotate, thus cleaning the floor. Typically, the motor drives the cleaning components via a reducer or other transmission device. This requires assembling numerous parts, increasing structural complexity. Furthermore, the reducer and other transmission devices are generally planetary gear drives, which have complex manufacturing processes and generate noticeable gear meshing noise during operation.

[0073] In view of this, please refer to Figure 1 , Figure 2 and Figure 17 This application provides a cleaning module 100 for use in a cleaning device 200. The cleaning module 100 can be used in cleaning devices such as sweepers to sweep up debris or clean floors. Debris includes, but is not limited to, hair, dust, and debris. The cleaning device includes, but is not limited to, floor scrubbers, sweepers, or combined sweeper and scrubber machines. For example, the cleaning device can be... Figure 1 and Figure 2 The handheld cleaning device shown can also be used for, for example Figure 17 The image shows a self-propelled cleaning robot.

[0074] Please see Figures 3-6The cleaning module 100 includes a cleaning component 10 and a direct drive motor 20. The direct drive motor 20 includes a rotor assembly 21 and a stator assembly 22. The stator assembly 22 is disposed inside the rotor assembly 21, and the cleaning component 10 is sleeved outside the rotor assembly 21. The rotor assembly 21 can rotate relative to the stator assembly 22, thereby driving the cleaning component 10 to rotate.

[0075] Exemplarily, the rotor assembly 21 includes a housing 24 and a rotor core 211, the rotor core 211 being disposed within the housing 24 and fixedly connected to the housing 24. The stator assembly 22 is disposed within the rotor core 211. The cleaning assembly 10 is sleeved outside the housing 24. Based on the way the cleaning assembly 10 is sleeved on the rotor assembly 21, the rotor assembly 21 can drive the cleaning assembly 10 to rotate either directly or indirectly. For example, the cleaning assembly 10 can be fixedly connected to the rotor assembly 21, in which case the rotor assembly 21 can drive the cleaning assembly 10 to rotate directly. Alternatively, the cleaning assembly 10 can be in contact with the rotor assembly 21, in which case the housing 24 can drive the cleaning assembly 10 to rotate indirectly through other components. In contact connection means that the cleaning assembly 10 and the rotor assembly 21 can rotate relative to each other under the action of external force.

[0076] Exemplarily, the cleaning component 10 includes a cleaning element 11, which can be a roller mop or a roller brush, etc. This embodiment of the application uses a roller mop as an example. The roller mop rolls against the surface to be cleaned, collecting dust, debris, hair, and other garbage. The roller mop then draws the garbage or wastewater into the dust collection box of the cleaning device under suction.

[0077] The rotor core 211 can be made of magnet. The stator assembly 22 includes a stator core 221 and a coil winding 222, which is wound around the stator core 221. When the coil winding 222 is connected to an external power source, the stator core 221 generates a rotating magnetic field, and the rotor core 211 generates an electromagnetic torque that drives the housing 24 to rotate relative to the stator core 221.

[0078] For example, the two ends of the stator core 221 can be exposed at the two ends of the housing 24 for fixed installation with the equipment body 210 of the cleaning equipment 200.

[0079] For example, please refer to Figure 9 The stator core 221 has a through hole 221a along the axial direction X. The through hole 221a is used to pass through a wire, such as the wire of the coil winding 222, which is connected to an external power source through the through hole 221a.

[0080] The cleaning module 100 provided in this application embodiment has a cleaning component 10 directly mounted on the rotor assembly 21 of the direct drive motor 20. The rotation of the rotor assembly 21 causes the cleaning component 10 to rotate along with it. Compared to related technologies where the motor uses a mechanical transmission device such as a reducer, this application embodiment simplifies the structure of the cleaning module 100.

[0081] Furthermore, since the direct drive motor 20 directly drives the cleaning component 10 to rotate, it can save on the parts used in the cleaning module 100 and improve work efficiency. In addition, the elimination of the reducer in the cleaning module 100 eliminates the need for a reducer mounting structure, further simplifying the disassembly and assembly process, reducing the weight of the cleaning module 100, and reducing the noise generated by the cleaning module 100 during operation, thus improving the user experience.

[0082] Furthermore, in related technologies, the housings of the cleaning component and the motor need to rotate relative to each other, thus requiring a radial clearance space. In this embodiment, since the rotor assembly 21 and the cleaning component 10 can rotate synchronously, there is no need for a clearance space between them, improving radial space utilization. In related technologies, the presence of a reduction gear mechanism limits the high-speed rotation of the cleaning component, resulting in a relatively limited speed range, typically below 500 RPM. This embodiment uses a direct-drive motor, increasing the speed range to, for example, 1–3000 RPM.

[0083] In some embodiments, the direct drive motor 20 further includes a rotating shaft 212; a first end 223 of the stator assembly 22 is located within the rotor assembly 21, and a second end 224 of the stator assembly 22 is at least partially exposed in the rotor assembly 21, with the rotor assembly 21 rotatably connected to the second end 224 of the stator assembly 22; the rotating shaft 212 passes through the stator assembly 22 and is rotatably connected to it, with an output end 2121 of the rotating shaft 212 fixedly connected to the rotor assembly 21 and at least partially exposed in the rotor assembly 21, and a non-output end 2122 of the rotating shaft 212 located within the second end 224 of the stator assembly 22.

[0084] Please see Figure 6 The first end 223 and the second end 224 of the stator assembly 22 refer to the two ends along the axial direction X, corresponding to the first end and the second end of the stator core 221, respectively. The output end 2121 and the non-output end 2122 of the shaft 212 are the two ends along the axial direction X. The output end 2121 refers to the end of the shaft 212 that is connected to the rotor assembly 21 to transmit driving force to other structures, and the non-output end 2122 of the shaft 212 refers to the end that does not need to output power to other structures.

[0085] The housing 24 includes an outer shell 241, which is capable of driving the cleaning assembly 10 to rotate. The outer shell 241 can form a receiving cavity to accommodate the stator assembly 22, the rotor core 211, and other structures. For example, at least a portion of the stator core 221, at least a portion of the rotating shaft 212, and the rotor core 211 are disposed within the receiving cavity. The two ends of the outer shell 241 are respectively sleeved on the rotating shaft 212 and the stator core 221. One end of the outer shell 241 can drive the rotating shaft 212 to rotate, and the other end can rotate stably relative to the stator core 221.

[0086] The second end 224 of the stator assembly 22 is at least partially exposed outside the housing 24 for fixed installation with the main body 210 of the cleaning device 200; by providing a rotating shaft 212, the output end of the rotating shaft 212 can drive other structures to rotate, such as a cooling fan.

[0087] In some embodiments, please refer to Figures 6-8 The housing 24 includes an outer shell 241 and an end cap 242. The outer shell 241 has a first mounting hole 241a and a second mounting hole 241b. The diameter of the first mounting hole 241a is smaller than the diameter of the second mounting hole 241b. The cleaning component 10 is sleeved on the outer shell 241. The rotor core 211 is located inside the outer shell 241 and is fixedly connected to the outer shell 241. The stator assembly 22 is disposed inside the rotor core 211. The output end 2121 of the rotating shaft 212 passes through the first mounting hole 241a and is fixedly connected to the outer shell 241. The end cap 242 has a third mounting hole 242a. The end cap 242 is disposed in the second mounting hole 241b and is fixedly connected to the outer shell 241. The second end 224 of the stator assembly 22 passes through the third mounting hole 242a. The end cap 242 is rotatably connected to the second end 224 of the stator assembly 22.

[0088] The outer casing 241 and end cap 242 are detachably connected to mount the stator assembly 22, rotor core 211, and other structures. During installation, the rotor core 211 is first inserted into the outer casing 241 through the second mounting hole 241b and fixedly connected to the outer casing 241. The non-output end 2122 of the shaft 212 is passed through the first mounting hole 241a. The stator assembly 22 is fitted onto the shaft 212 through the second mounting hole 241b, with the non-output end 2122 of the shaft 212 located within the second end 224 of the stator assembly 22. The end cap 242 is then installed in the second mounting hole 241b, with the second end 224 of the stator assembly 22 passing through the third mounting hole 242a of the end cap 242 and protruding from the end cap 242. When the coil winding 222 is energized, the rotor core 211 drives the outer casing 241 to rotate, and the outer casing 241 drives the cleaning assembly 10 and the end cap 242 to rotate together. In some embodiments, to improve rotational stability, other structures, such as the connector 50, are configured to rotate the cleaning assembly 10 together with the housing 241, as detailed below. Therefore, while the rotor core 211 drives the housing 241 to rotate, it also transmits power to the shaft 212, which in turn drives other structures to rotate via the output end 2121 of the shaft 212.

[0089] When the cleaning module 100 is performing cleaning operations, external debris such as dust, impurities, and sewage can easily enter the direct drive motor 20 and cause pollution to the structure, such as causing the coil winding 222 to short-circuit and burn out, thus affecting the normal operation of the direct drive motor 20.

[0090] To improve the sealing performance of the direct drive motor 20, in some embodiments, please refer to... Figure 6 The cleaning module 100 also includes a first seal 30, which is disposed between the cleaning component 10 and the end cap 242 to reduce the possibility of debris entering between the cleaning component 10 and the housing 24.

[0091] To improve the sealing performance of the direct drive motor 20, in some embodiments, please refer to... Figure 6 The cleaning module 100 also includes a second seal 40, such as a skeleton oil seal. The second seal 40 is disposed between the stator assembly 22 and the end cover 242 to improve the sealing performance within the direct drive motor 20.

[0092] Exemplarily, the first seal 30 may be a sealing ring or a sealing gasket, etc. In other embodiments not shown, a sealed connection is achieved between the cleaning assembly 10 and the housing 241 by a sealant. Exemplarily, the first seal 30 may be disposed near the end of the end cap 242 away from the housing 241.

[0093] The second seal 40 is disposed between the stator core 221 and the end cover 242. For example, the second seal 40 is a skeleton oil seal, which can compensate for the self-tightening force of the oil seal at any time through the contraction force of the self-tightening helical spring, thereby improving the sealing performance of the direct drive motor 20. Moreover, the skeleton oil seal has good wear resistance, which can reduce the coefficient of friction and reduce energy loss.

[0094] In some embodiments, please refer to Figure 7 The end cap 242 includes an end plate 2421 and an outer cylinder 2422. The end plate 2421 has a third mounting hole 242a; the inner end of the outer cylinder 2422 has an annular groove 2422a provided along its outer periphery, and the outer shell 241 is fitted into the annular groove 2422a. The end plate 2421 is disposed inside the outer cylinder 2422 and fixedly connected to the outer cylinder 2422. A first sealing member 30 is disposed between the cleaning assembly 10 and the outer end of the outer cylinder 2422. The inner end of the outer cylinder 2422 refers to the end facing the outer shell 241.

[0095] The end of the outer shell 241 is fitted into the annular groove 2422a, forming a stop structure between the outer shell 241 and the outer cylinder 2422, which improves the airtightness of the installation. Sealant can be applied between the end of the outer shell 241 and the annular groove 2422a. The end plate 2421 can shield and protect the receiving cavity of the outer shell 241 along the axial direction X, and can also provide support for the outer cylinder 2422.

[0096] In some embodiments, please refer to Figure 7 The direct drive motor 20 also includes a first bearing 2431, which is disposed between the end cover 242 and the second end 224 of the stator assembly 22, such as between the end cover 242 and the second end of the stator core 221. This improves the stability of the relative rotation between the end cover 242 and the stator assembly 22.

[0097] For example, please refer to Figure 7 The end cap 242 also includes a first inner cylinder 2423 and a second inner cylinder 2424. The first inner cylinder 2423 is disposed inside the end plate 2421, forming a first annular cavity 242b between the first inner cylinder 2423 and the stator assembly 22, and the first bearing 2431 is disposed within the first annular cavity 242b. The second inner cylinder 2424 is disposed outside the end plate 2421, forming a second annular cavity 242c between the second inner cylinder 2424 and the stator assembly 22, and the second seal 40 is disposed within the second annular cavity 242c. The inner side of the end plate 2421 refers to the side facing the outer casing 241, and the outer side of the end plate 2421 refers to the side away from the outer casing 241.

[0098] The first inner cylinder 2423 provides installation space for the first bearing 2431, and the second inner cylinder 2424 provides installation space for the second seal 40, such as a skeleton oil seal.

[0099] For example, please refer to Figure 7 , Figure 10 and Figure 11 The stator core 221 includes a stator body 2211, a first shaft segment 2212, and a second shaft segment 2213. The first shaft segment 2212 is disposed between the stator body 2211 and the second shaft segment 2213. The outer diameter of the first shaft segment 2212 is larger than the outer diameter of the second shaft segment 2213, so as to limit the inward movement of the first bearing 2431 along the axial direction X. The end plate 2421 can limit the outward movement of the first bearing 2431 along the axial direction X. Here, "inward" refers to the side facing the stator body 2211, and "outward" refers to the side away from the stator body 2211.

[0100] In some embodiments, please refer to Figure 12 The end cap 242 also includes a plurality of reinforcing ribs 2425, which are disposed on the end plate 2421 and are circumferentially spaced between the outer cylinder 2422 and the second inner cylinder 2424. The structural strength of the end cap 2422 can be improved by providing reinforcing ribs 2425.

[0101] In some embodiments, please refer to Figure 8 The direct drive motor 20 also includes a second bearing 2432, which is disposed between the rotating shaft 212 and the first end 223 of the stator assembly 22. Exemplarily, the second bearing 2432 is disposed between the rotating shaft 212 and the stator core 221. Exemplarily, the second bearing 2432 and the stator core 221 are interference-fitted.

[0102] For example, please refer to Figure 8 The stator core 221 also includes a protruding section 2214 connected to the end of the stator body 2211 away from the first shaft section 2212. A third annular cavity 22a is formed between the protruding section 2214 and the rotating shaft 212, and the second bearing 2432 is disposed in the third annular cavity 22a.

[0103] For example, please refer to Figure 7 The direct drive motor 20 also includes a third bearing 2433, which is disposed between the shaft 212 and the second end 224 of the stator assembly 22. For example, the third bearing 2433 is disposed between the shaft 212 and the stator core 221. Exemplarily, the third bearing 2433 is interference-fitted with the stator core 221.

[0104] For example, please refer to Figure 7 The direct drive motor 20 also includes a baffle 244, which is disposed on the outside of the third bearing 2433 and fixed to the rotating shaft 212.

[0105] Thus, the third bearing 2433 can limit the movement of the baffle 244 toward the second bearing 2432, thereby limiting the movement of the rotating shaft 212 away from the end cover 242 along the axial direction X. By setting the baffle 244, the third bearing 2433 can be axially limited in the X direction, reducing the possibility of the third bearing 2433 moving along the axial direction X.

[0106] For example, please refer to Figure 6 and Figure 8 The rotating shaft 212 has a shaft body 2123 and a first protruding ring 2124 sleeved on the outside of the shaft body 2123. The shaft body 2123 passes through the central channel 221b, and the first protruding ring 2124 is inserted into the first mounting hole 241a to fix the rotating shaft 212 and the outer shell 241.

[0107] For example, please refer to Figure 8 The rotating shaft 212 also includes a second convex ring 2125, which is sleeved outside the shaft body 2123 and located outside the first convex ring 2124, that is, on the side of the first convex ring 2124 away from the non-output end 2122 of the rotating shaft 212. The outer diameter of the second convex ring 2125 is larger than that of the first convex ring 2124, and abuts against the outer casing 241 to limit the movement of the rotating shaft 212 along the axial direction X towards the non-output end 2122 side.

[0108] Thus, the second convex ring 2125 and the baffle 244 can limit the two ends of the rotating shaft 212 in the axial direction X, reducing the possibility of the rotating shaft 212 moving relative to the outer shell 241 in the axial direction X when it rotates.

[0109] For example, the pivot 212 is a one-piece molded part.

[0110] In other embodiments not shown, the rotor assembly 21 further includes a second baffle, sleeved outside the shaft body 2123 and disposed on the outside of the first convex ring 2124, i.e., located on the side of the first convex ring 2124 away from the non-output end 2122 of the rotating shaft 212. The outer diameter of the second baffle is larger than that of the first convex ring 2124 and abuts against the housing 241 to limit the movement of the rotating shaft 212 along the axial direction X towards the non-output end 2122 side.

[0111] For example, the rotating shaft 212 and the second baffle are separately configured.

[0112] In some embodiments, please refer to Figure 7 and Figure 8The central channel 221b includes a first bore section 221b1, a second bore section 221b2, and an intermediate bore section 221b3. A second bearing 2432 is disposed in the first bore section 221b1; a third bearing 2433 is disposed in the second bore section 221b2; the intermediate bore section 221b3 connects the first bore section 221b1 and the second bore section 221b2. The inner diameter of the intermediate bore section 221b3 is smaller than the inner diameter of the first bore section 221b1 and larger than the outer diameter of the rotating shaft 212. The inner diameter of the second bore section 221b2 is larger than the inner diameter of the intermediate bore section 221b3 and smaller than the inner diameter of the first bore section 221b1.

[0113] Because the inner diameter of the intermediate hole section 221b3 is smaller than the inner diameter of the first hole section 221b1, the movement stroke of the second bearing 2432 toward the third bearing 2433 along the axial direction X can be limited; because the inner diameter of the intermediate hole section 221b3 is smaller than the inner diameter of the second hole section 221b2, the movement stroke of the third bearing 2433 toward the second bearing 2432 can be limited.

[0114] For example, a first hole segment 221b1 is formed on a protruding segment 2214, an intermediate hole segment 221b3 is formed on a stator body 2211, and a second hole segment 221b2 is formed on a second shaft segment 2213.

[0115] For example, please refer to Figure 7 The outer diameter of the baffle 244 is smaller than the inner diameter of the second hole section 221b2, so as to prevent the baffle 244 from contacting the stator core 221 and affecting the rotational stability of the shaft 212.

[0116] In some embodiments, please refer to Figure 8 The cleaning module 100 includes a sensor magnetic ring 60 and a position sensor. The sensor magnetic ring 60 is disposed in one of the rotor assembly 21 and the stator assembly 22; the position sensor is disposed in the other of the rotor assembly 21 and the stator assembly 22, and the position sensor and the sensor magnetic ring 60 at least partially overlap in the axial X projection.

[0117] For example, a sensor magnetic ring 60 is disposed on the housing 24, such as the outer shell 241. A position sensor is disposed on the stator core 221. By disposing of the position sensor and the sensor magnetic ring 60, the position and rotation speed of the rotating shaft 212 can be obtained.

[0118] For example, the position sensor can be a switch Hall sensor, which has good anti-interference capability and operational stability, a simple output signal form, and low manufacturing cost. Alternatively, the position sensor can be a linear Hall sensor, which can accurately reflect continuous changes in magnetic field strength and can detect changes in magnetic field from weak to strong. Or, the position sensor can be a magnetic encoder, which can provide very accurate position information, has strong anti-interference capability, relatively stable structure, and long service life.

[0119] For example, please refer to Figure 8 The outer casing 241 has a mounting post 2411, which forms a first mounting hole 241a, and the sensor magnetic ring 60 is sleeved on the mounting post 2411.

[0120] For example, please refer to Figure 8 The cleaning module 100 includes a mounting plate 70, which is sleeved on the rotating shaft 212 and located on the outside of the stator core 221, and a position sensor is disposed on the mounting plate 70.

[0121] In some embodiments, please refer to Figure 6 The cleaning module 100 also includes a connector 50, which is fixedly connected to the output end 2121 of the rotating shaft 212. The cleaning component 10 is sleeved on the rotor assembly 21 and rigidly connected to the connector 50. For example, the cleaning component 10 is sleeved on the housing 24 and may be in contact with the housing 24. A rigid connection means that the connector 50 can drive the cleaning component 10 to rotate together; a rigid connection is, for example, a fastening connection. When the rotor assembly 21 drives the cleaning component 10 to rotate, even if the cleaning component 10 is in contact with the rotor assembly 21, because the cleaning component 10 is rigidly connected to the connector 50, the connector 50 drives the cleaning component 10 to rotate, thereby enabling the cleaning component 10 to rotate synchronously with the rotor assembly 21. Thus, under the drive of the rotating shaft 212, the connector 50 and the rotor assembly 21 can jointly drive the cleaning component 10 to rotate, thereby improving the rotational stability of the cleaning component 10.

[0122] In some embodiments, please refer to Figure 6 , Figures 13-16 The connector 50 has at least two claws 51 arranged circumferentially. The cleaning assembly 10 includes a cleaning element 11, a support assembly 12, and a retainer 13. The cleaning element 11 is disposed outside the support assembly 12, which is sleeved on the rotor assembly 21. The retainer 13 is disposed inside the support assembly 12 and has at least two slots 13a spaced apart circumferentially. The claws 51 are respectively inserted into the corresponding slots 13a so that the cleaning assembly 10 and the connector 50 can rotate synchronously.

[0123] The number of jaws 51 is two, three, or more. Multiple jaws 51 are spaced apart, for example, evenly spaced. The number of slots 13a corresponds to the number of jaws 51, such as three jaws 51 and three slots 13a.

[0124] The card holder 13 provides support and fixation for the connector 50. Figure 6The output end 2121 of the rotating shaft 212 is fixedly connected to the connector 50, and the claw 51 is inserted into the slot 13a to fix the connector 50 to the card seat 13. In this way, the rotor assembly 21 can drive the cleaning assembly 10 to rotate, and can also drive the cleaning assembly 10 to rotate through the connector 50. Specifically, the rotating shaft 212 drives the card seat 13 to rotate through the connector 50, thereby driving the bracket assembly 12 and the cleaning component 11 to rotate together.

[0125] In some embodiments, please refer to Figures 13-16 The support assembly 12 includes a support cylinder 121, a coupling 122, a mounting plate 124, and a retaining ring 123. A cleaning component 11 is disposed outside the support cylinder 121; the mounting plate 124 is disposed inside the support cylinder 121 and fixedly connected to it, and a retainer 13 is fixedly connected to the mounting plate 124. The coupling 122 is disposed at one end of the support cylinder 121 and is rotatably connected to the equipment body 210. The retaining ring 123 is detachably disposed at the other end of the support cylinder 121 to abut against the end of the rotor assembly 21 located at the second end 224 of the stator assembly 22.

[0126] Thus, the connector 50 drives the mounting bracket 13 to rotate, and the mounting bracket 13 drives the mounting plate 124, support cylinder 121, and retaining ring 123 to rotate together. The retaining ring 123 is detachably connected to the support cylinder 121, so that the retaining ring 123 can be removed to install the direct drive motor 20 inside the support cylinder 121. The retaining ring 123 can fix the end of the rotor assembly 21. In this way, one end of the direct drive motor 20 is mounted on the mounting bracket 13, and the other end is mounted on the retaining ring 123.

[0127] For example, the cleaning component 10 also includes a fastener 14, through which the retainer 13 is fixedly connected to the mounting plate 124.

[0128] For example, the card holder 13 includes at least two card posts 131, which are spaced apart to form card slots 13a. For example, the card posts 131 are fixedly connected to the mounting plate 124 by fasteners 14.

[0129] This application also provides a cleaning device 200, please refer to... Figure 1 , Figure 2 and Figure 17 The cleaning device 200 includes a device body 210 and a cleaning module 100 according to any of the embodiments of this application, wherein the cleaning module 100 is disposed on the device body 210. The device body 210 is used to install and support other components of the cleaning device.

[0130] The cleaning device 200 provided in this application embodiment has the same beneficial effects as the cleaning module 100 described above because it includes the cleaning module 100 described above.

[0131] For example, the cleaning device 200 also includes a control program, which can control the cleaning device to automatically run a planned route for cleaning after being powered on, without the need for manual operation of the cleaning device, making it convenient and quick to use.

[0132] For example, the cleaning device 200 includes a mounting arm 220, through which the cleaning module 100 is connected to the device body 210. A mounting arm 220 is detachably provided on each side of the device body 210. For instance, the second end 224 of the stator assembly 22 is fixedly connected to one side of the mounting arm 220. One end of the support cylinder 121, away from the direct drive motor 20, is rotatably connected to the other side of the mounting arm 220 via a coupling 122, allowing the support cylinder 121 to rotate relative to the mounting arm 220.

[0133] The above description is merely a preferred embodiment of this application and is not intended to limit the application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A cleaning module, characterized in that, include: Cleaning components; A direct-drive motor includes a rotor assembly and a stator assembly, wherein the stator assembly is disposed within the rotor assembly and the cleaning assembly is sleeved outside the rotor assembly; The rotor assembly can rotate relative to the stator assembly, thereby driving the cleaning assembly to rotate.

2. The cleaning module of claim 1, wherein, The first end of the stator assembly is located within the rotor assembly, and the second end of the stator assembly is at least partially exposed in the rotor assembly. The rotor assembly is rotatably connected to the stator assembly.

3. The cleaning module according to claim 2, characterized in that, The direct drive motor also includes a rotating shaft that passes through the stator assembly and is rotatably connected to the stator assembly. The output end of the rotating shaft is fixedly connected to the rotor assembly and is at least partially exposed in the rotor assembly. The non-output end of the rotating shaft is located inside the second end of the stator assembly.

4. The cleaning module according to claim 3, characterized in that, The rotor assembly includes a housing and a rotor core, the housing comprising: The housing has a first mounting hole and a second mounting hole, the diameter of the first mounting hole being smaller than the diameter of the second mounting hole. The cleaning component is sleeved on the outside of the housing. The rotor core is located inside the housing and is fixedly connected to the housing. The stator assembly is disposed inside the rotor core. The output end of the rotating shaft passes through the first mounting hole and is fixedly connected to the housing. An end cap having a third mounting hole is disposed in the second mounting hole and fixedly connected to the housing. The second end of the stator assembly passes through the third mounting hole, and the end cap is rotatably connected to the second end of the stator assembly.

5. The cleaning module according to claim 4, characterized in that, The cleaning module also includes: A first seal is disposed between the cleaning assembly and the end cap; and / or, A second seal is disposed between the stator assembly and the end cap.

6. The cleaning module according to claim 5, characterized in that, The end cap includes: The end plate has the third mounting hole; The outer cylinder has an annular groove at its inner end along its outer periphery. The outer shell is fitted into the annular groove. The end plate is disposed inside the outer cylinder and fixedly connected to the outer cylinder. The first sealing element is disposed between the cleaning component and the outer end of the outer cylinder.

7. The cleaning module according to claim 6, characterized in that, The direct drive motor further includes a first bearing, and the end cover further includes: A first inner cylinder is disposed on the inner side of the end plate, and a first annular cavity is formed between the first inner cylinder and the stator assembly, and the first bearing is disposed in the first annular cavity; The second inner cylinder is disposed on the outside of the end plate, and a second annular cavity is formed between the second inner cylinder and the stator assembly. The second seal is disposed in the second annular cavity.

8. The cleaning module according to claim 7, characterized in that, The end cap also includes: Multiple reinforcing ribs are disposed on the end plate and are circumferentially spaced between the outer cylinder and the second inner cylinder.

9. The cleaning module according to claim 3, characterized in that, The cleaning module also includes: A connector is fixedly connected to the output end of the rotating shaft, and the cleaning component is sleeved on the rotor assembly and rigidly connected to the connector.

10. The cleaning module according to claim 9, characterized in that, The connector has at least two circumferentially arranged claws, and the cleaning assembly includes: Cleaning parts; A support assembly, wherein the cleaning component is disposed outside the support assembly, and the support assembly is sleeved outside the rotor assembly; A retainer is disposed within the bracket assembly. The retainer has at least two slots spaced apart circumferentially. The claws are respectively inserted into the corresponding slots so that the cleaning assembly and the connector can rotate synchronously.

11. The cleaning module according to claim 10, characterized in that, The support assembly includes: A support cylinder, with the cleaning component disposed outside the support cylinder; The mounting plate is disposed inside the support cylinder and fixedly connected to the support cylinder, and the card holder is fixedly connected to the mounting plate; A retaining ring is detachably disposed at one end of the support cylinder to abut against the end of the rotor assembly located at the second end of the stator assembly.

12. The cleaning module of claim 4, wherein, The direct drive motor also includes: The second bearing is disposed between the rotating shaft and the first end of the stator assembly; A third bearing is disposed between the rotating shaft and the second end of the stator assembly; A baffle plate is disposed on the outside of the third bearing and fixed to the rotating shaft.

13. The cleaning module of claim 12, wherein, The stator assembly includes a stator core, the stator core having a central channel, and the rotating shaft passing through the central channel; The central channel includes: The first bore section, wherein the second bearing is disposed in the first bore section; The third bearing is disposed in the second hole section; An intermediate hole section is connected between the first hole section and the second hole section. The inner diameter of the intermediate hole section is smaller than the inner diameter of the first hole section and larger than the outer diameter of the rotating shaft. The inner diameter of the second hole section is larger than the inner diameter of the intermediate hole section and smaller than the inner diameter of the first hole section.

14. The cleaning module according to any one of claims 3 to 13, characterized in that, The stator assembly includes: The stator core has a central channel and a through hole along the axial direction. The rotating shaft passes through the central channel, and the through hole is used to pass through the conductor. The coil winding is wound around the stator core.

15. The cleaning module of claim 14, wherein, The cleaning module includes: A sensor magnetic ring is disposed in one of the rotor assembly and the stator assembly; A position sensor is disposed in one of the rotor assembly and the stator assembly, the position sensor and the sensor magnetic ring at least partially overlap in axial projection.

16. A cleaning apparatus, characterized by include: Equipment body; The cleaning module according to any one of claims 1 to 15 is disposed on the main body of the device.

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