Mop driving device and cleaning equipment

Abstract

The invention provides a mop driving device and cleaning equipment, and relates to the technical field of intelligent cleaning household appliances, and the mop driving device comprises a motor assembly, a first planetary gear set, a second planetary gear set, an inner gear ring and a lifting rotating assembly which share the same central shaft. Wherein the motor assembly comprises a motor and a first sun gear, a rotating shaft is arranged in the center of the bottom of the motor, the first sun gear is installed on the rotating shaft, the first sun gear is meshed with the first planetary gear set, and the first planetary gear set is meshed with the second planetary gear set; the first planetary gear set and the second planetary gear set are connected to the interior of the inner gear ring in a tooth meshing mode. The end, close to the motor assembly, of the lifting rotating assembly is connected with an output shaft of the second planetary gear set, and the end, away from the motor assembly, of the lifting rotating assembly is connected with the mop assembly. According to the mop driving device provided by the invention, the cleaning effect is improved while the size is reduced by adopting a tight stacking mode.

Description

Technical Field

[0001] The present application relates to the technical field of intelligent cleaning household appliances, and more particularly, to a mop driving device and a cleaning device. Background Art

[0002] A mop machine is an intelligent cleaning household appliance for cleaning the floor. With the improvement of living standards, users have higher and higher requirements for the intelligence and miniaturization of mop machines.

[0003] As a core component in the mop machine, the performance of the mop driving device directly affects the cleaning effect and volume of the entire mop machine. The existing mop driving devices mainly use worm gears for transmission, but this method has problems such as low transmission accuracy, poor cleaning effect, and large volume of the mop driving device.

[0004] In summary, how to reduce the volume of the mop driving device on the basis of ensuring the cleaning effect is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Invention

[0005] The purpose of the present application is to provide a mop driving device and a cleaning device to reduce the volume of the mop driving device on the basis of ensuring the cleaning effect.

[0006] To achieve the above purpose, the technical solution adopted in the present application is as follows:

[0007] On the one hand, the present application provides a mop driving device, including a motor assembly, a first planetary gear set, a second planetary gear set, an internal gear ring, and a lifting and rotating assembly that are concentrically arranged;

[0008] The motor assembly includes a motor and a first sun gear. A rotating shaft is provided at the center of the bottom of the motor, and the first sun gear is installed on the rotating shaft. The first sun gear meshes with the first planetary gear set, and the first planetary gear set meshes with the second planetary gear set. Both the first planetary gear set and the second planetary gear set are connected to the inside of the internal gear ring through gear meshing;

[0009] One end of the lifting and rotating assembly close to the motor assembly is connected to the output shaft of the second planetary gear set, and the end of the lifting and rotating assembly far from the motor assembly is connected to the mop assembly;

[0010] The motor assembly is used to drive the first planetary gear set to rotate. When the first planetary gear set rotates, the first planetary gear set drives the internal gear ring and the second planetary gear set to rotate; the second planetary gear set drives the lifting and rotating assembly to rotate under the action of the first planetary gear set and the internal gear ring, so that the mop assembly moves.

[0011] Further, the first planetary gear set includes a first planet carrier and a plurality of first planetary gears meshed around the first sun gear. The first planet carrier includes a first bearing plate, a second sun gear, and a plurality of first central shafts;

[0012] The plurality of first central shafts are arranged at one end of the first bearing plate close to the motor. Each first planetary gear is respectively mounted on a first central shaft, and the racks of each first planetary gear are respectively meshed with the first sun gear and the internal gear ring;

[0013] The second sun gear is arranged at the center of the end of the first bearing plate far from the motor, and the second sun gear and the first sun gear are coaxial;

[0014] The first bearing plate, the second sun gear, and the plurality of first central shafts are integrally formed.

[0015] Further, the second planetary gear set includes a second planet carrier and a plurality of second planetary gears meshed around the second sun gear. The second planet carrier includes a second bearing plate, an output shaft, and a plurality of second central shafts;

[0016] The plurality of second central shafts are arranged at one end of the second bearing plate close to the first planetary gear set. Each second planetary gear is respectively mounted on a second central shaft, and the racks of each second planetary gear are respectively meshed with the second sun gear and the internal gear ring;

[0017] The output shaft is arranged at the center of the end of the second bearing plate far from the first planetary gear set, and the output shaft and the second sun gear are coaxial;

[0018] The second bearing plate, the output shaft, and the plurality of second central shafts are integrally formed.

[0019] Further, the mop driving device further includes an annular upper shell and an annular lower shell;

[0020] One end of the annular upper shell is connected to the bottom of the motor, the other end of the annular upper shell is connected to one end of the annular lower shell, and the inner wall of the other end of the annular lower shell is in interference connection with the outer wall of the lifting and rotating assembly;

[0021] The annular upper shell is used to accommodate the first planetary gear set, the second planetary gear set, and the internal gear ring, and the annular lower shell is used to accommodate the lifting and rotating assembly.

[0022] Further, the lifting and rotating assembly includes an inner sleeve and a lifting sleeve. The inner sleeve is provided with a hollow connecting shaft protruding in the direction close to the second planetary gear set, and the connecting shaft of the inner sleeve is rotatably connected to the output shaft of the second planetary gear set;

[0023] The lifting sleeve is sleeved outside the inner sleeve. The inner wall of the lifting sleeve is provided with internal helical threads, and the outer wall of the inner sleeve is provided with external helical threads that match the internal helical threads. Moreover, one end of the lifting sleeve away from the motor is connected to the mop assembly, and the outer wall of the lifting sleeve is in interference connection with the inner wall of one end of the annular lower housing away from the annular upper housing.

[0024] Furthermore, the mop driving device further includes a main control module, and the main control module is electrically connected to the motor;

[0025] When the motor receives the forward rotation instruction sent by the main control module, the motor drives the first sun gear, the first planetary gear set, the internal gear ring, the second planetary gear set, and the inner sleeve to rotate forward, and the lifting sleeve drives the mop assembly to descend under the torque action between the external helical threads and the internal helical threads;

[0026] When the motor receives the reverse rotation instruction sent by the main control module, the motor drives the first sun gear, the first planetary gear set, the internal gear ring, the second planetary gear set, and the inner sleeve to rotate in reverse, and the lifting sleeve drives the mop assembly to ascend under the torque between the external helical threads and the internal helical threads and the friction force between the inner wall of the annular lower housing and the outer wall of the lifting sleeve.

[0027] Furthermore, the mop driving device further includes an annular blocking member, and the annular blocking member is arranged at the inner wall of one end of the annular lower housing close to the annular upper housing;

[0028] When the main control module receives the working instruction, the main control module sends a forward rotation instruction to the motor to make the lifting sleeve descend; the annular blocking member is used to block the descent of the lifting sleeve when the lifting sleeve descends to the end position of the stroke, so that the lifting sleeve drives the mop assembly to rotate and clean the ground.

[0029] Furthermore, the mop driving device further includes an infrared detection module, and the infrared detection module is electrically connected to the main control module; the infrared detection module includes an infrared emitting tube and an infrared receiving tube, and both the infrared emitting tube and the infrared receiving tube are arranged at the inner wall of one end of the annular upper housing close to the lifting sleeve;

[0030] The infrared emitting tube is used to send an infrared signal to the infrared receiving tube;

[0031] When one end of the lifting sleeve away from the mop assembly is at the starting position of the stroke, the infrared signal is blocked by the lifting sleeve, and the infrared detection module sends a blocking signal to the main control module;

[0032] When the main control module receives a stop work instruction, the main control module sends a reverse instruction to the motor to raise the lifting sleeve until the main control module receives an occlusion signal sent by the infrared detection module, and then the main control module sends a stop rotation instruction to the motor.

[0033] Further, the mop driving device further includes a magnetic member and a Hall sensor;

[0034] A first groove for accommodating the magnetic member is formed in the bottom of the end of the lifting sleeve away from the motor, and the lifting sleeve is detachably connected to the mop assembly through the magnetic member;

[0035] A second groove is formed in the outer wall of the end of the annular upper shell close to the lifting sleeve, the Hall sensor is arranged in the second groove, and the Hall sensor is electrically connected to the main control module;

[0036] The main control module is used to judge whether the mop assembly is installed according to the signal sent by the Hall sensor.

[0037] On the other hand, the present application further provides a cleaning device, and the cleaning device includes the mop driving device according to any one of the foregoing embodiments.

[0038] Compared with the prior art, the present application has the following beneficial effects:

[0039] The present application provides a mop driving device and a cleaning device. The device includes a motor assembly, a first planetary gear set, a second planetary gear set, an internal gear ring and a lifting and rotating assembly with the same central axis. The motor assembly includes a motor and a first sun gear. A rotating shaft is provided at the center of the bottom of the motor, and the first sun gear is installed on the rotating shaft. The first sun gear meshes with the first planetary gear set, and the first planetary gear set meshes with the second planetary gear set. Both the first planetary gear set and the second planetary gear set are connected to the inside of the internal gear ring through gear meshing. One end of the lifting and rotating assembly close to the motor assembly is connected to the output shaft of the second planetary gear set, and the end of the lifting and rotating assembly away from the motor assembly is connected to the mop assembly. The motor assembly is used to drive the first planetary gear set to rotate, and when the first planetary gear set rotates, the first planetary gear set drives the internal gear ring and the second planetary gear set to rotate. The second planetary gear set drives the lifting and rotating assembly to rotate under the action of the first planetary gear set and the internal gear ring, so as to move the mop assembly.

[0040] By stacking the first planetary gear set and the second planetary gear set and precisely mating them with the internal gear ring, not only the transmission efficiency and accuracy are improved, but also the torque input by the motor assembly can be amplified step by step to obtain a high output torque, ensuring that the mop assembly can maintain a stable rotation speed and sufficient downward pressure on complex ground, thereby improving the cleaning effect. In addition, the motor assembly, the first planetary gear set, the second planetary gear set, the internal gear ring and the lifting and rotating assembly on the same central axis form a tight vertical stacked transmission structure, greatly reducing the volume of the entire mop driving device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] To make the objectives, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Apparently, the described embodiments are some but not all of the embodiments of the present application. Components of the embodiments of the present application usually described and illustrated in the drawings herein can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the present application claimed, but merely represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0042] Figure 1 One of the exploded structural schematic diagrams of a mop driving device provided by an embodiment of the present application;

[0043] Figure 2 A structural schematic diagram of a first planetary gear set and a second planetary gear set provided by an embodiment of the present application;

[0044] Figure 3 Another exploded structural schematic diagram of a mop driving device provided by an embodiment of the present application;

[0045] Figure 4 One of the connection schematic diagrams of an annular upper shell and a motor provided by an embodiment of the present application;

[0046] Figure 5 Another connection schematic diagram of an annular upper shell and a motor provided by an embodiment of the present application;

[0047] Figure 6 A connection schematic diagram of an annular lower shell and an annular upper shell provided by an embodiment of the present application;

[0048] Figure 7 One of the structural schematic diagrams of a lifting and rotating assembly provided by an embodiment of the present application;

[0049] Figure 8The second structural schematic diagram of a lifting and rotating assembly provided by an embodiment of the present application;

[0050] Figure 9 The structural schematic diagram of an infrared emitting tube and an infrared receiving tube provided by an embodiment of the present application;

[0051] Figure 10 The structural schematic diagram of an infrared signal not blocked by a lifting sleeve provided by an embodiment of the present application;

[0052] Figure 11 The structural schematic diagram of an infrared signal blocked by a lifting sleeve provided by an embodiment of the present application;

[0053] Figure 12 The structural schematic diagram of another mopping cloth driving device provided by an embodiment of the present application;

[0054] Figure 13 The circuit control schematic diagram of a mopping cloth driving device provided by an embodiment of the present application.

[0055] Icon: 10 - Mopping cloth driving device; 100 - Motor assembly; 110 - Motor; 120 - First sun gear; 130 - Wiring port; 200 - First planetary gear set; 210 - First planetary gear; 220 - First planetary carrier; 221 - First bearing plate; 222 - First central shaft; 223 - Second sun gear; 300 - Second planetary gear set; 310 - Second planetary gear; 320 - Second planetary carrier; 321 - Second bearing plate; 322 - Second central shaft; 323 - Output shaft; 400 - Internal gear ring; 500 - Lifting and rotating assembly; 510 - Inner sleeve; 511 - Connecting shaft; 512 - External thread; 520 - Lifting sleeve; 521 - First groove; 522 - Internal thread; 610 - Ring-shaped upper shell; 611 - Second groove; 620 - Ring-shaped lower shell; 630 - Screw; 640 - Ring-shaped blocking member; 700 - Bearing; 800 - Magnetic member; 910 - Infrared emitting tube; 920 - Infrared receiving tube. 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 accompanying 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. Usually, the components of the embodiments of the present application described and shown in the accompanying drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the present application to be protected, but only represents the selected embodiments of the present application. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present application.

[0057] In the description of the present application, it should be noted that relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. The term "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium.

[0058] The following will describe in detail some embodiments of the present application with reference to the accompanying drawings. Without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0059] As described in the background art, the existing mop driving device mainly uses a worm gear for transmission, and the following problems exist in this method:

[0060] (1) High noise and short service life of the motor: Worm transmission usually generates a certain amount of noise, especially in the case of high speed or frequent start and stop, which will have an adverse impact on the application of the motor. And the worm transmission has large frictional losses, resulting in an increase in the motor load and shortening the service life of the motor.

[0061] (2) Low transmission accuracy: Worm gear transmission is prone to generate clearances and backlash, and its speed and position control are inaccurate, resulting in unstable transmission or operation.

[0062] (3) Low output torque and poor cleaning effect: The meshing mode of worm transmission is sliding friction, and the transmission efficiency is low, resulting in a large loss of the torque output by the motor during transmission, and the actual torque acting on the mop is reduced, affecting the cleaning power.

[0063] (4) Large volume: The worm gear structure is complex and occupies a large space, making it difficult to reduce the overall volume of the mop driving device, and at the same time, the manufacturing cost is relatively high.

[0064] In view of this, please refer to Figure 1 , an embodiment of the present application provides a mop driving device 10, which includes a motor assembly 100, a first planetary gear set 200, a second planetary gear set 300, an internal gear ring 400, and a lifting and rotating assembly 500 that share the same central axis.

[0065] Among them, both the first planetary gear set 200 and the second planetary gear set 300 are located inside the internal gear ring 400, and the first planetary gear set 200 is located between the motor assembly 100 and the second planetary gear set 300, and the second planetary gear set 300 is located between the first planetary gear set 200 and the lifting and rotating assembly 500.

[0066] The motor assembly 100 includes a motor 110 and a first sun gear 120. A rotating shaft is provided at the center of the bottom of the motor 110, and the first sun gear 120 is mounted on the rotating shaft, and their motion states are consistent. In addition, the first sun gear 120 meshes with the first planetary gear set 200, and the first planetary gear set 200 also meshes with the second planetary gear set 300, and both the first planetary gear set 200 and the second planetary gear set 300 are connected to the inside of the internal gear ring 400 through tooth meshing.

[0067] One end of the lifting and rotating assembly 500 close to the motor assembly 100 is connected to the output shaft of the second planetary gear set 300, and one end of the lifting and rotating assembly 500 far from the motor assembly 100 (i.e., the bottom of the lifting and rotating assembly 500) is connected to the mop assembly.

[0068] The motor assembly 100 is used to drive the first planetary gear set 200 to rotate, and when the first planetary gear set 200 rotates, the first planetary gear set 200 drives the internal gear ring 400 and the second planetary gear set 300 to rotate. The second planetary gear set 300 drives the lifting and rotating assembly 500 to rotate under the action of the first planetary gear set 200 and the internal gear ring 400, so that the mop assembly moves.

[0069] Based on the above design, compared with the sliding friction meshing method of worm gears, the gear meshing in this application is mainly rolling friction, reducing noise. And, this application utilizes the characteristic of multiple planetary gears meshing simultaneously, so that the transmission force is evenly dispersed to each meshing tooth surface, greatly reducing the contact stress of a single gear and improving the service life of the gear set and the motor. By stacking the first planetary gear set 200 and the second planetary gear set 300 and setting them in precise cooperation with the internal gear ring 400, not only the transmission efficiency and accuracy are improved, but also the torque input by the motor assembly 100 can be gradually amplified to obtain a high output torque, ensuring that the mop assembly can still maintain a stable rotation speed and sufficient downward pressure on complex floors (such as carpets and uneven tiles), thereby improving the cleaning effect. In addition, the motor assembly 100, the first planetary gear set 200, the second planetary gear set 300, the internal gear ring 400 and the lifting and rotating assembly 500 with the same central axis form a tight vertical stacked transmission structure, greatly reducing the volume of the entire mop driving device 10, saving more hardware space, and also saving manufacturing costs.

[0070] In an alternative embodiment, please refer to Figure 2 Figure, the first planetary gear set 200 includes: a first planetary carrier 220 and a plurality of first planetary gears 210 meshing around the first sun gear 120. Further, the first planetary carrier 220 includes: a first bearing plate 221, a second sun gear 223 and a plurality of first central shafts 222. Among them, the number of the first central shafts 222 is equal to the number of the first planetary gears 210.

[0071] A plurality of first central shafts 222 are provided at one end of the first carrier plate 221 close to the motor 110. Each first planetary gear 210 is respectively mounted on a first central shaft 222 (i.e., each first central shaft 222 is respectively inserted into a first planetary gear 210), and the racks of each first planetary gear 210 are respectively meshed with the first sun gear 120 and the internal gear ring 400.

[0072] The second sun gear 223 is provided at the center of the end of the first carrier plate 221 far from the motor 110, and the second sun gear 223 is coaxial with the first sun gear 120.

[0073] Moreover, the first carrier plate 221, the second sun gear 223 and the plurality of first central shafts 222 are integrally formed.

[0074] In another alternative embodiment, the second planetary gear set 300 includes: a second planetary carrier 320 and a plurality of second planetary gears 310 meshed around the second sun gear 223. Further, the second planetary carrier 320 includes: a second carrier plate 321, an output shaft 323 and a plurality of second central shafts 322. Among them, the number of the second central shafts 322 is equal to the number of the second planetary gears 310.

[0075] A plurality of second central shafts 322 are provided at one end of the second carrier plate 321 close to the first planetary gear set 200. Each second planetary gear 310 is respectively mounted on a second central shaft 322 (i.e., each second central shaft 322 is respectively inserted into a second planetary gear 310), and the racks of each second planetary gear 310 are respectively meshed with the second sun gear 223 and the internal gear ring 400.

[0076] The output shaft 323 is provided at the center of the end of the second carrier plate 321 far from the first planetary gear set 200, and the output shaft 323 is coaxial with the second sun gear 223.

[0077] Moreover, the second carrier plate 321, the output shaft 323 and the plurality of second central shafts 322 are integrally formed.

[0078] For better understanding, by way of example, it is assumed that the number of both the first planetary gears 210 and the second planetary gears 310 is three (then the number of both the first central shafts 222 and the second central shafts 322 is also three), and the transmission process of the entire mop driving device 10 is as follows:

[0079] When the motor 110 receives a rotation instruction through the wiring port 130, the rotating shaft at the bottom of the motor 110 drives the first sun gear 120 to rotate. The first sun gear 120 drives three first planetary gears 210 to rotate. The three first planetary gears 210 mesh with the internal gear ring 400 and rotate to drive the second sun gear 223 in the first planetary carrier 220 to rotate. The second sun gear 223 drives three second planetary gears 310 to rotate. The three second planetary gears 310 mesh with the internal gear ring 400 and rotate to drive the output shaft 323 in the second planetary carrier 320 to rotate. The output shaft 323 then drives the lifting and rotating assembly 500 to rotate, thereby driving the mop assembly to rotate and clean the ground.

[0080] It can be seen that multiple sun gears, multiple planetary gears, the internal gear ring 400 and the motor 110 in the embodiment of the present application are closely stacked to form a vertically stacked transmission structure, greatly reducing the volume of the entire mop driving device 10, and increasing the output torque in a limited space, ensuring that the mop assembly can maintain a stable rotation speed and sufficient downward pressure on complex ground, thereby improving the cleaning effect.

[0081] Further, please refer to Figures 3 to 6 , in order to better fix the motor assembly 100, the first planetary gear set 200, the second planetary gear set 300, the internal gear ring 400 and the lifting and rotating assembly 500, in the embodiment of the present application, the mop driving device 10 further includes an annular upper shell 610 and an annular lower shell 620.

[0082] Wherein, one end of the annular upper shell 610 can be connected to the bottom of the motor 110 through a screw 630, and the other end of the annular upper shell 610 can also be connected to one end of the annular lower shell 620 through a screw 630. The inner wall of the other end of the annular lower shell 620 is in interference connection with the outer wall of the lifting and rotating assembly 500.

[0083] The annular upper shell 610 is used to accommodate the first planetary gear set 200, the second planetary gear set 300 and the internal gear ring 400, and the annular lower shell 620 is used to accommodate the lifting and rotating assembly 500.

[0084] As an alternative embodiment, please refer to Figure 7 and Figure 8 , the lifting and rotating assembly 500 includes an inner sleeve 510 and a lifting sleeve 520.

[0085] Wherein, the inner sleeve 510 is provided with a hollow connecting shaft 511 protruding in the direction close to the second planetary gear set 300. The connecting shaft 511 of the inner sleeve 510 is rotatably connected to the output shaft 323 of the second planetary gear set 300.

[0086] The lifting sleeve 520 is sleeved outside the inner sleeve 510. The inner wall of the lifting sleeve 520 is provided with an internal spiral thread 522, and the outer wall of the inner sleeve 510 is provided with an external spiral thread 512 that matches the internal spiral thread 522. Moreover, one end of the lifting sleeve 520 away from the motor 110 (i.e., the bottom of the lifting sleeve 520) is connected to the mop assembly, and the outer wall of the lifting sleeve 520 is in interference fit with the inner wall of one end of the annular lower housing 620 away from the annular upper housing 610 to prevent the lifting sleeve 520 from slipping during the ascending process.

[0087] Optionally, the outer diameter of the lifting sleeve 520 is 1 mm longer than the inner diameter of the annular lower housing 620 (i.e., the annular lower housing 620 interferes with the lifting sleeve 520 by 1 mm), and the annular lower housing 620 is made of wear-resistant and high-temperature-resistant material.

[0088] Based on the above design, when the output shaft 323 of the second planetary gear set 300 rotates forward driven by the motor 110, the inner sleeve 510 also rotates forward. At this time, the lifting sleeve 520 drives the mop assembly to rotate and descend under the torque action between the internal spiral thread 522 and the external spiral thread 512. Similarly, when the output shaft 323 of the second planetary gear set 300 rotates reversely driven by the motor 110, the inner sleeve 510 also rotates reversely. At this time, the lifting sleeve 520 drives the mop assembly to rotate and ascend under the torque action between the internal spiral thread 522 and the external spiral thread 512. Moreover, due to the interference fit between the inner wall of the annular lower housing 620 and the outer wall of the lifting sleeve 520, a frictional force (i.e., resistance) will be generated between the two. The existence of this frictional force can prevent the lifting sleeve 520 from sliding down due to its own gravity or external load during the ascending process, ensuring that the lifting sleeve 520 can ascend stably.

[0089] In addition, in order to further improve the transmission efficiency, in the embodiment of the present application, the mop driving device 10 further includes a bearing 700. Wherein, the connecting shaft 511 of the inner sleeve 510 is sleeved outside the output shaft 323 of the second planetary gear set 300, and the bearing 700 is sleeved outside the connecting shaft 511 of the inner sleeve 510. By arranging the bearing 700 at the output shaft 323 and the connecting shaft 511, the direct frictional loss between the output shaft 323 and the connecting shaft 511 is reduced, ensuring that the power of the motor 110 is efficiently transmitted to the lifting and rotating assembly 500, avoiding torque loss caused by friction, thereby improving the transmission efficiency. And this bearing 700 can also isolate the direct impact of external loads on the output shaft 323 and the connecting shaft 511, improving the service life of the mop driving device 10.

[0090] Furthermore, in the embodiment of the present application, the mop driving device 10 further includes a main control module, and this main control module is electrically connected to the plug-in port 130 of the motor 110.

[0091] When the motor 110 receives the forward rotation instruction sent by the main control module, the motor 110 drives the first sun gear 120, the first planetary gear set 200, the internal gear ring 400, the second planetary gear set 300, and the inner sleeve 510 to rotate forward. The lifting sleeve 520 drives the mop assembly to descend under the torque action between the outer spiral thread 512 and the inner spiral thread 522.

[0092] When the motor 110 receives the reverse rotation instruction sent by the main control module, the motor 110 drives the first sun gear 120, the first planetary gear set 200, the internal gear ring 400, the second planetary gear set 300, and the inner sleeve 510 to rotate in reverse. The lifting sleeve 520 drives the mop assembly to ascend under the torque between the outer spiral thread 512 and the inner spiral thread 522 and the frictional force between the inner wall of the annular lower housing 620 and the outer wall of the lifting sleeve 520.

[0093] In an alternative embodiment, please refer to Figure 8 , the mop driving device 10 further includes an annular blocking member 640. The annular blocking member 640 is disposed on the inner wall of the annular lower housing 620 near the end close to the annular upper housing 610.

[0094] When the main control module receives a work instruction (i.e., when mopping the floor or entering the base station for mop cleaning), the main control module sends a forward rotation instruction to the motor 110 to lower the lifting sleeve 520. The annular blocking member 640 is used to block the continuous descent of the lifting sleeve 520 when the lifting sleeve 520 descends to the end position of the stroke, so that the lifting sleeve 520 drives the mop assembly to rotate and clean the floor.

[0095] In another alternative embodiment, please refer to Figures 9 to 11 , the mop driving device 10 further includes an infrared detection module, and the infrared detection module is electrically connected to the main control module.

[0096] The infrared detection module includes an infrared transmitting tube 910 and an infrared receiving tube 920. The infrared transmitting tube 910 and the infrared receiving tube 920 are both disposed on the inner wall of the annular upper housing 610 near the end close to the lifting sleeve 520, and the infrared transmitting tube 910 is used to send an infrared signal to the infrared receiving tube 920.

[0097] As Figure 10 shown, when the end of the lifting sleeve 520 far from the mop assembly is not at the starting position of the stroke, the infrared signal is not blocked by the lifting sleeve 520. At this time, the infrared receiving tube 920 can receive the infrared signal sent by the infrared transmitting tube 910.

[0098] As Figure 11As shown in the figure, when one end of the lifting sleeve 520 away from the mop assembly is at the starting position of the stroke, the infrared signal is blocked by the lifting sleeve 520. At this time, the infrared receiving tube 920 cannot receive the infrared signal sent by the infrared transmitting tube 910, and the infrared detection module sends a blocking signal to the main control module.

[0099] Based on the above design, when the main control module receives the stop working instruction, the main control module sends a reverse instruction to the motor 110 to raise the lifting sleeve 520 until the main control module receives the blocking signal sent by the infrared detection module (indicating that the lifting sleeve 520 has risen to the starting position of the stroke), and then the main control module sends a stop rotation instruction to the motor 110. At this time, the entire mop driving device 10 is in a non-working state.

[0100] In addition, the lifting sleeve 520 and the mop assembly in the embodiment of the present application are detachably connected. To detect whether the mop assembly is connected to the lifting sleeve 520, please refer to Figure 12 In the embodiment of the present application, the mop driving device 10 further includes a magnetic member 800 and a Hall sensor (not shown in the figure).

[0101] Wherein, a first groove 521 for accommodating the magnetic member 800 is formed inwardly at the bottom of one end of the lifting sleeve 520 away from the motor 110, and the lifting sleeve 520 is detachably connected to the mop assembly through the magnetic member 800.

[0102] A second groove 611 is formed on the outer wall of one end of the annular upper shell 610 close to the lifting sleeve 520, the Hall sensor is arranged in the second groove 611, and the Hall sensor is electrically connected to the main control module.

[0103] In the initial stage, the mop assembly needs to be installed at the bottom of the lifting sleeve 520 through the magnetic member 800. At this time, the motor 110 is in an unworking state, and the lifting sleeve 520 is at the starting position of the stroke. When the mop assembly is installed at the bottom of the lifting sleeve 520 through the magnetic member 800, the distance between the Hall sensor and the magnetic member 800 is very close, and the Hall sensor can detect the magnetic field signal and convert it into an electrical signal and send it to the main control module. When the mop assembly is not installed at the bottom of the lifting sleeve 520, the Hall sensor cannot detect the magnetic field signal.

[0104] In addition, by forming the first groove 521 inwardly at the bottom of the lifting sleeve 520 and forming the second groove 611 on the outer wall of one end of the annular upper shell 610 close to the lifting sleeve 520, while ensuring the positions of the magnetic member 800 and the Hall sensor are fixed, it is avoided that the magnetic member 800 and the Hall sensor occupy too much hardware space, and further reduces the volume of the entire mop driving device 10.

[0105] Based on the above design, please refer to Figure 13, the main control module can determine whether the mop assembly is installed on the lifting sleeve according to whether the Hall sensor sends an electrical signal, and can determine whether the lifting sleeve is at the starting position of the stroke according to whether the infrared detection module sends an occlusion signal. In addition, the main control module can also control the forward or reverse rotation of the motor according to the received instruction (i.e., the working instruction or the stop working instruction), and control the rotation speed of the motor through the motor current signal collected by the sampling module.

[0106] Further, the embodiment of the present application also provides a cleaning device, which includes the mop driving device 10 described in any one of the foregoing embodiments.

[0107] In summary, the embodiment of the present application provides a mop driving device and a cleaning device. The device includes a motor assembly, a first planetary gear set, a second planetary gear set, an internal gear ring, and a lifting and rotating assembly with the same central axis. The motor assembly includes a motor and a first sun gear. A rotating shaft is provided at the center of the bottom of the motor, and the first sun gear is installed on the rotating shaft. The first sun gear meshes with the first planetary gear set, and the first planetary gear set meshes with the second planetary gear set. Both the first planetary gear set and the second planetary gear set are connected to the inside of the internal gear ring through gear meshing. One end of the lifting and rotating assembly close to the motor assembly is connected to the output shaft of the second planetary gear set, and the end of the lifting and rotating assembly far from the motor assembly is connected to the mop assembly. The motor assembly is used to drive the first planetary gear set to rotate, and when the first planetary gear set rotates, the first planetary gear set drives the internal gear ring and the second planetary gear set to rotate. The second planetary gear set drives the lifting and rotating assembly to rotate under the action of the first planetary gear set and the internal gear ring, so that the mop assembly moves.

[0108] The present application utilizes the characteristics of multiple planetary gears meshing simultaneously, evenly dispersing the transmission force to each meshing tooth surface, greatly reducing the contact stress of a single gear, and improving the service life of the gear set and the motor. By stacking the first planetary gear set and the second planetary gear set and setting them in precise cooperation with the internal gear ring, not only the transmission efficiency and accuracy are improved, but also the torque input by the motor assembly can be gradually amplified to obtain a high output torque, ensuring that the mop assembly can maintain a stable rotation speed and sufficient downward pressure on complex floors, thereby improving the cleaning effect. In addition, the motor assembly, the first planetary gear set, the second planetary gear set, the internal gear ring, and the lifting and rotating assembly with the same central axis form a tight vertical stacked transmission structure, greatly reducing the volume of the entire mop driving device and saving more hardware space.

[0109] The foregoing is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0110] It will be apparent to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be considered exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be considered as limiting the claim to which it relates.

Claims

1. A mop driving device, characterized in that: A motor assembly including a coaxial motor assembly, a first planetary gear set, a second planetary gear set, an inner gear ring, and a lifting and rotating assembly; The motor assembly includes a motor and a first sun gear, a rotating shaft is provided at the bottom center of the motor, the first sun gear is mounted on the rotating shaft, the first sun gear is meshed with the first planetary gear set, and the first planetary gear set is meshed with the second planetary gear set, and the first planetary gear set and the second planetary gear set are both connected to the inside of the inner gear ring through tooth meshing; One end of the lifting and rotating assembly close to the motor assembly is connected to the output shaft of the second planetary gear set, and one end of the lifting and rotating assembly away from the motor assembly is connected to the mop assembly; The motor assembly is used to drive the first planetary gear set to rotate, and when the first planetary gear set rotates, the first planetary gear set drives the inner ring gear and the second planetary gear set to rotate; the second planetary gear set drives the lifting and rotating assembly to rotate under the action of the first planetary gear set and the inner ring gear, so as to move the mop assembly.

2. The mop driving device according to claim 1, characterized in that: The first planetary gear set includes a first planet carrier and a plurality of first planetary gears meshing around the first sun gear, the first planet carrier includes a first carrier plate, a second sun gear and a plurality of first center shafts; A plurality of first central shafts are arranged at one end of the first bearing plate close to the motor, each first planetary gear is respectively mounted on a first central shaft, and a rack of each first planetary gear is respectively meshed with the first sun gear and the inner gear ring; The second sun gear is disposed at the center of an end of the first bearing plate away from the motor, and the second sun gear and the first sun gear have the same central axis; The first bearing plate, the second sun gear and a plurality of first center shafts are integrally formed.

3. The mop driving device according to claim 2, characterized in that: The second planetary gear set includes a second planet carrier and a plurality of second planetary gears meshing around the second sun gear, the second planet carrier includes a second carrier plate, an output shaft and a plurality of second center shafts; A plurality of second central shafts are disposed at one end of the second carrier plate close to the first planetary gear set, each second planetary gear is respectively mounted on a second central shaft, and a rack of each second planetary gear is respectively meshed with the second sun gear and the inner gear ring; The output shaft is disposed at the center of an end of the second carrier plate away from the first planetary gear set, and the output shaft is coaxial with the second sun gear; The second bearing plate, the output shaft and the plurality of second center shafts are integrally formed.

4. The mop driving device according to claim 1, characterized in that: The mop drive device also includes an annular upper shell and an annular lower shell; One end of the annular upper shell is connected to the bottom of the motor, the other end of the annular upper shell is connected to one end of the annular lower shell, and the inner wall of the other end of the annular lower shell is interference-connected with the outer wall of the lifting and rotating assembly; The annular upper shell is used to accommodate the first planetary gear set, the second planetary gear set and the inner ring gear, and the annular lower shell is used to accommodate the lifting and rotating assembly.

5. The mop driving device according to claim 4, characterized in that: The lifting and rotating assembly comprises an inner sleeve and a lifting sleeve, wherein the inner sleeve is provided with a hollow connecting shaft protruding in a direction close to the second planetary gear set, and the connecting shaft of the inner sleeve is rotatably connected to the output shaft of the second planetary gear set; The lifting sleeve is sleeved outside the inner sleeve, the inner wall of the lifting sleeve is provided with an inner spiral pattern, and the outer wall of the inner sleeve is provided with an outer spiral pattern matching the inner spiral pattern; and the end of the lifting sleeve away from the motor is connected to the mop assembly, and the outer wall of the lifting sleeve is interference connected with the inner wall of the end of the annular lower shell away from the annular upper shell.

6. The mop driving device according to claim 5, characterized in that: The mop drive device also includes a main control module, and the main control module is electrically connected to the motor; When the motor receives the forward rotation instruction sent by the main control module, the motor drives the first sun gear, the first planetary gear set, the inner ring gear, the second planetary gear set, and the inner sleeve to rotate forward, and the lifting sleeve drives the mop assembly to descend under the action of the torque between the outer spiral pattern and the inner spiral pattern; When the motor receives a reverse command sent by the main control module, the motor drives the first sun gear, the first planetary gear set, the inner ring gear, the second planetary gear set, and the inner sleeve to reverse, and the lifting sleeve drives the mop assembly to rise under the action of the torque between the outer spiral pattern and the inner spiral pattern and the friction between the inner wall of the annular lower shell and the outer wall of the lifting sleeve.

7. The mop driving device according to claim 6, characterized in that: The mop driving device further comprises an annular blocking member, which is arranged on the inner wall of the annular lower shell near one end of the annular upper shell; When the main control module receives a work instruction, the main control module sends a forward rotation instruction to the motor to make the lifting sleeve descend; the annular blocking member is used to block the lifting sleeve from descending when the lifting sleeve descends to the end position of the stroke, so that the lifting sleeve drives the mop assembly to rotate and clean the floor.

8. The mop driving device according to claim 6, characterized in that: The mop drive device further includes an infrared detection module, which is electrically connected to the main control module; the infrared detection module includes an infrared transmitting tube and an infrared receiving tube, and the infrared transmitting tube and the infrared receiving tube are both arranged on the inner wall of the annular upper shell near one end of the lifting sleeve; The infrared transmitting tube is used to send infrared signals to the infrared receiving tube; When one end of the lifting sleeve away from the mop assembly is located at the starting point of the stroke, the infrared signal is blocked by the lifting sleeve, and the infrared detection module sends a blocking signal to the main control module; When the main control module receives a stop working instruction, the main control module sends a reverse instruction to the motor to make the lifting sleeve rise, until the main control module receives a blocking signal sent by the infrared detection module, the main control module sends a stop rotation instruction to the motor.

9. The mop driving device according to claim 6, characterized in that: The mop driving device also includes a magnetic member and a Hall sensor; A first groove for accommodating the magnetic member is formed inwardly at the bottom of one end of the lifting sleeve away from the motor, and the lifting sleeve is detachably connected to the mop assembly via the magnetic member; A second groove is formed on the outer wall of the annular upper shell at one end close to the lifting sleeve, the Hall sensor is arranged in the second groove, and the Hall sensor is electrically connected to the main control module; The main control module is used to determine whether the mop assembly is installed according to the signal sent by the Hall sensor.

10. A cleaning device, characterized in that: The cleaning device comprises a mop drive device as described in any one of claims 1-9.

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