A mop assembly, a robot sweeper and a robot sweeper system

Abstract

The application discloses a mop assembly, a sweeping robot and a sweeping robot system, which are configured with a fixed scraper, a movable scraper and a driving mechanism, can realize simultaneous water scraping of the fixed scraper and the movable scraper, can realize channel formation of the movable scraper, can realize reverse flushing of a sewage tank, a filter screen and a scraper, and can improve self-cleaning effect, reduce the frequency of manual cleaning of the sewage tank, the filter screen and the scraper by a user, or can eliminate the need of manual cleaning of the sewage tank, the filter screen and the scraper by the user, and can improve user experience.

Description

Technical Field

[0001] This invention relates to the field of household appliance technology, and in particular to a mop assembly, a sweeping robot, and a sweeping robot system. Background Technology

[0002] With technological advancements, the functions of robotic vacuum cleaners have become increasingly sophisticated. Current robotic vacuum cleaners, in addition to sweeping and vacuuming, also feature mopping and self-cleaning capabilities. The robot's casing houses a mop roller and a wastewater tank. A filter is installed in the wastewater tank, and a scraper is mounted at the tank's opening, contacting the mop roller. During mopping, the mop roller rotates, and the scraper removes debris. When the robot returns to its base station's tray, it performs a self-cleaning operation to automatically clean the mop roller. The tray's nozzles spray water onto the mop roller, which rotates, and the scraper remains in contact with the roller to scrape wastewater into the wastewater tank. The wastewater in the tank is then pumped into the robot's wastewater container and subsequently into the base station's wastewater tank.

[0003] Throughout the mop cleaning process, the scraper remains in contact with the mop rollers, and the scraped-off wastewater is filtered through a screen before entering the wastewater tank. Over time, the wastewater tank, screen, and scraper all require regular cleaning. Existing robotic vacuum cleaners lack backwashing capabilities for these components, resulting in frequent cleaning and a need for improvement in user experience. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the prior art and provide a mop assembly, a sweeping robot, and a sweeping robot system. By configuring a fixed scraper, a movable scraper, and a drive mechanism, the fixed scraper and the movable scraper can simultaneously scrape water, and the movable scraper can also move to form a channel to achieve reverse rinsing of the wastewater tank, filter, scraper, etc., thereby improving the self-cleaning effect, reducing the frequency of manual cleaning of the wastewater tank, filter, scraper, etc. by the user, or eliminating the need for manual cleaning of the wastewater tank, filter, scraper, etc. by the user, thus improving the user experience.

[0005] The present invention provides a mop assembly, including a mop housing and a mop roller pivotally mounted in the mop housing;

[0006] The mop housing has a wastewater tank located on one side of the mop roller, with the opening of the wastewater tank facing the mop roller, and a filter screen installed in the wastewater tank.

[0007] A fixed scraper and a movable scraper are installed on the lower edge of the groove, and the movable scraper is movably connected to the fixed scraper.

[0008] The mop housing is also equipped with a drive mechanism for driving the movable scraper to move relative to the fixed scraper, and the drive mechanism is connected to the movable scraper.

[0009] When the drive mechanism is in its initial state, both the movable scraper and the fixed scraper are in contact with the mop roller;

[0010] When the drive mechanism is in the drive state, a channel for backflushing sewage to flow out is formed between the movable scraper, the fixed scraper and the mop roller.

[0011] In one of the alternative technical solutions, the fixed scraper has a mounting groove in the middle, the movable scraper is installed in the mounting groove, and the movable scraper can move linearly or swing up and down in the mounting groove.

[0012] In one of the alternative technical solutions, the mounting groove is connected to the sewage tank, and the movable scraper is slidably mounted in the mounting groove;

[0013] The drive mechanism is connected to the wall of the mounting groove and is used to drive the movable scraper to move linearly back and forth in the mounting groove.

[0014] When the drive mechanism is in its initial state, the movable scraper and the fixed scraper are flush with the ends of the mop roller;

[0015] When the drive mechanism is in the drive state, the end of the movable scraper moves into the mounting groove.

[0016] In one of the alternative technical solutions, the drive mechanism includes a motor, gears, and a rack;

[0017] A rack is installed at one end of the movable scraper, and the rack is perpendicular to the axis of rotation of the mop roller;

[0018] The mounting groove has a mounting cavity in its wall, the motor is mounted in the mounting cavity, the rack is slidably assembled in the mounting cavity, and the gear is mounted on the motor shaft and meshes with the rack.

[0019] In one of the alternative technical solutions, a set of the drive mechanism is respectively installed between the opposite ends of the movable scraper and the groove walls on the opposite sides of the mounting groove, and the motors of the two sets of drive mechanisms operate synchronously.

[0020] In one of the alternative technical solutions, the fixed scraper includes a first upper scraper and a first lower scraper, wherein the first lower scraper is connected to the lower part of the middle of the first upper scraper;

[0021] The mounting groove is formed between the first lower scraper and the first upper scraper, and the middle part of the first upper scraper has a first notch that communicates with the mounting groove.

[0022] In one of the alternative technical solutions, the movable scraper is installed in the mounting groove via a scraper pivot shaft, and the scraper pivot shaft is arranged parallel to the pivot shaft of the mop roller;

[0023] The driving mechanism includes a motor, which is connected to the wall of the mounting groove. The motor's rotating shaft is connected to the scraper's pivot shaft, and is used to drive the movable scraper to swing up and down in the mounting groove.

[0024] When the drive mechanism is in its initial state, the movable scraper and the fixed scraper are flush with the ends of the mop roller;

[0025] When the drive mechanism is in the drive state, the movable scraper swings at a preset angle, and the end of the movable scraper separates from the end of the fixed scraper.

[0026] In one of the alternative technical solutions, the fixed scraper includes a second upper scraper and a second lower scraper, wherein the second lower scraper is connected to the lower part of the middle of the second upper scraper;

[0027] The mounting groove is formed between the second lower scraper and the second upper scraper, and the middle part of the second upper scraper has a second notch that communicates with the mounting groove;

[0028] Each end of the second lower scraper is connected to a movable scraper;

[0029] When the drive mechanism is in its initial state, the upper end of the movable scraper is in contact with the second upper scraper;

[0030] When the drive mechanism is in the drive state, the movable scraper swings at a preset angle, and the upper end of the movable scraper separates from the second upper scraper.

[0031] The present invention also provides a sweeping robot, wherein the sweeping robot is equipped with the mop assembly described in any of the foregoing technical solutions;

[0032] The sweeping robot includes a main unit wastewater box and a main unit water pump. The main unit water pump is connected to the main unit wastewater box through a pipe, and the main unit water pump is connected to the wastewater tank through a pipe.

[0033] When the sweeping robot is in the first cleaning state, the main unit's water pump is in working state, the drive mechanism is in the initial state, and the sewage in the sewage tank is pumped into the main unit's sewage box.

[0034] When the sweeping robot is in the second cleaning state, the main water pump is in the off state, the drive mechanism is in the drive state, and the sewage in the sewage tank overflows to backwash the filter and is discharged through the channel.

[0035] The present invention also provides a sweeping robot system, including a robot base station and the sweeping robot described in the aforementioned technical solution;

[0036] The robot base station includes a base station clean water tank, a base station wastewater tank, a base station water supply pump, and a base station water pump;

[0037] The bottom of the robot base station has a base station tray for the sweeping robot to enter and clean, and the base station tray has a spray nozzle;

[0038] The base station water tank, the base station water supply pump, and the nozzle are connected in sequence via pipes.

[0039] The base station tray, the base station water pump, and the base station sewage tank are connected in sequence by pipes;

[0040] When the sweeping robot is in the base station tray and in the first cleaning state, the base station water pump is connected to the main unit wastewater box, the base station water pump is disconnected from the base station tray, the base station water supply pump and the base station water pump are both in working state, and the wastewater in the main unit wastewater box is pumped to the base station wastewater tank by the base station water pump.

[0041] When the sweeping robot is in the base station tray and in the second cleaning state, the base station water pump is disconnected from the main unit wastewater box, and the base station water pump is connected to the base station tray. Both the base station water supply pump and the base station water pump are in operation, and the wastewater in the base station tray is pumped to the base station wastewater tank by the base station water pump.

[0042] The above technical solution has the following beneficial effects:

[0043] This invention provides a mop assembly, a sweeping robot, and a sweeping robot system, which are configured with a fixed scraper, a movable scraper, and a drive mechanism. During the first stage of cleaning the mop roller, both the fixed and movable scrapers are in contact with the mop roller, scraping the wastewater on the mop roller into a wastewater tank, then into the main unit's wastewater box, and finally into the base station's wastewater tank. During the second stage of cleaning the mop roller, the movable scraper is driven by the drive mechanism to move relative to the fixed scraper, creating a channel between the fixed scraper, the movable scraper, and the mop roller. Wastewater on the mop roller is first scraped off by the fixed scraper and stored in the wastewater tank. Once the wastewater tank is full, it flows out in the opposite direction, then through the channel into the base station tray, and finally into the base station's wastewater tank. During the backwashing process, dirt from the wastewater tank is carried out, and the filter screen, fixed scraper, and movable scraper are rinsed at the same time. This achieves the backwashing function, improves the self-cleaning effect, reduces the frequency of manual cleaning of the wastewater tank, filter screen, scraper, etc. by the user, or eliminates the need for manual cleaning of the wastewater tank, filter screen, scraper, etc., thus improving the user experience. Attached Figure Description

[0044] The disclosure of this invention will become more readily understood by referring to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings:

[0045] Figure 1 This is a perspective view of a mop assembly provided in an embodiment of the present invention from a first-view perspective;

[0046] Figure 2 This is a perspective view of a mop assembly provided in an embodiment of the present invention from a second perspective.

[0047] Figure 3 This is an exploded view of a mop assembly provided in an embodiment of the present invention;

[0048] Figure 4 This is a schematic diagram of the housing cover plate and housing body of a mop assembly provided in an embodiment of the present invention after separation.

[0049] Figure 5 A schematic diagram showing the arrangement of the filter screen, fixed scraper, and movable scraper within the main body of the housing;

[0050] Figure 6 This is a three-dimensional view of the main body of the shell;

[0051] Figure 7 This is an enlarged view of the connection between the first lower scraper and the first upper scraper.

[0052] Figure 8 This is a schematic diagram showing the relative positions of the filter screen and the movable scraper.

[0053] Figure 9This is a cross-sectional view of a mop assembly provided in an embodiment of the present invention;

[0054] Figure 10 This is a schematic diagram showing the connection between the drive mechanism and the movable scraper, wherein the drive mechanism includes a motor, gears, and a rack;

[0055] Figure 11 This is an assembly diagram of a movable scraper and a fixed scraper, wherein the movable scraper can swing relative to the fixed scraper;

[0056] Figure 12 for Figure 11 A schematic diagram showing the movable scraper swinging downwards at a preset angle.

[0057] Figure 13 This is a schematic diagram showing the connection between the drive mechanism and the movable scraper, wherein the drive mechanism includes a motor;

[0058] Figure 14 This is a schematic diagram showing the connection between the movable scraper and the fixed scraper, wherein the fixed scraper includes a second upper scraper and a second lower scraper;

[0059] Figure 15 for Figure 14 A magnified view of a portion of the image;

[0060] Figure 16 This is a top view of a sweeping robot provided in an embodiment of the present invention;

[0061] Figure 17 This is a schematic diagram of a robot base station for a sweeping robot system provided in an embodiment of the present invention. Detailed Implementation

[0062] The specific embodiments of the present invention will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "inner" and "outer" refer to directions toward or away from the geometric center of a specific component, respectively.

[0063] like Figure 1-15 As shown, a mop assembly 100 provided in one embodiment of the present invention includes a mop housing 1 and a mop roller 2 pivotally mounted in the mop housing 1.

[0064] The mop housing 1 has a wastewater tank 13, which is located on one side of the mop roller 2. The opening of the wastewater tank 13 faces the mop roller 2, and a filter screen 3 is installed in the wastewater tank 13.

[0065] A fixed scraper 14 and a movable scraper 15 are installed on the lower edge of the groove, and the movable scraper 15 is movably connected to the fixed scraper 14.

[0066] The mop housing 1 is also equipped with a drive mechanism 4 for driving the movable scraper 15 to move relative to the fixed scraper 14, and the drive mechanism 4 is connected to the movable scraper 15.

[0067] When the drive mechanism 4 is in its initial state, both the movable scraper 15 and the fixed scraper 14 are in contact with the drag roller 2.

[0068] When the drive mechanism 4 is in the drive state, a channel for backflushing sewage to flow out is formed between the movable scraper 15, the fixed scraper 14 and the drag roller 2.

[0069] The mop assembly 100 provided by this invention is a component of a sweeping robot or a sweeping machine main unit. The mop assembly 100 includes a mop housing 1, a mop roller 2, a filter 3, and a drive mechanism 4.

[0070] The mop housing 1 has a downward-facing receiving groove for mounting the mop roller 2. The mop housing 1 also has a wastewater tank 13 with an opening facing the receiving groove. Specifically, the mop housing 1 includes a housing body 11 and a housing cover 12 connected to the upper end of the housing body 11. The wastewater tank 13 is located on one side of the housing body 11, and the housing cover 12 covers the upper opening of the wastewater tank 13 and the upper opening of the receiving groove. The opening of the wastewater tank 13 is substantially horizontal and faces the inside of the mop housing 1. The lower opening of the housing body 11 is also the lower opening of the receiving groove. The side or bottom of the wastewater tank 13 has a drain outlet for... Figure 16 The main unit of the robotic vacuum cleaner 200 shown has a water pump 202 connected via a pipe, which pumps wastewater from the wastewater tank 13 to the main unit wastewater box 201. The main unit wastewater box 201 has a relatively large volume and can serve as a temporary storage container for wastewater. The wastewater in the main unit wastewater box 201 is ultimately discharged through... Figure 17 The base station pump 304 of the robot base station 300 shown pumps water into the base station sewage tank 302.

[0071] A fixed scraper 14 and a movable scraper 15 are installed on the lower edge of the opening of the sewage tank 13. The movable scraper 15 is movably connected to the fixed scraper 14. The movable scraper 15 can extend or swing relative to the fixed scraper 14, so that under certain conditions, the movable scraper 15 and the fixed scraper 14 are staggered to form a flow channel or passage or opening for sewage discharge, so that backwash sewage can flow out and clean the sewage tank 13, filter screen 3 and scraper, etc.

[0072] The mop roller 2 is cylindrical or cylindrical in shape. It is mounted in the receiving groove of the mop housing 1 via a rotating shaft. A portion of the mop roller 2 protrudes below the lower opening of the receiving groove to contact the ground and clean it. A mop roller drive motor for driving the mop roller 2 is mounted on the outside of the mop housing 1 and is directly connected to the rotating shaft of the mop roller 2 or connected through a transmission mechanism to drive the mop roller 2 to rotate.

[0073] The filter screen 3 is installed in the sewage tank 13, and it is lower than the opening of the sewage tank 13.

[0074] The drive mechanism 4 is used to drive the movable scraper 15 to move, for example, to move, rotate, or swing the movable scraper 15. The drive mechanism 4 can be installed inside the mop housing 1 and directly connected to the movable scraper 15, or it can be installed outside the mop housing 1 and connected to the movable scraper 15 via a transmission mechanism. The drive mechanism 4 can be a motor drive mechanism, a piston drive mechanism, etc.

[0075] When the drive mechanism 4 is in its initial state, both the movable scraper 15 and the fixed scraper 14 are in contact with the mop roller 2. Both the movable scraper 15 and the fixed scraper 14 can be used to scrape off the water and deposits on the mop roller 2 and collect them into the sewage tank 13.

[0076] When the drive mechanism 4 is in the drive state, the movable scraper 15 is driven to move, for example, retract, move downward, swing downward, etc., so that the movable scraper 15 and the fixed scraper 14 are intersected, and the movable scraper 15 no longer contacts the mop roller 2, thereby forming a channel between the movable scraper 15, the fixed scraper 14 and the mop roller 2 for the discharge of backwash sewage overflowing from the sewage tank 13.

[0077] When the robotic vacuum cleaner 200 returns to the base station tray 305 of the robot base station 300 to perform a self-cleaning operation, the robotic vacuum cleaner 200 has a first cleaning step and a second cleaning step, and correspondingly, the robotic vacuum cleaner 200 has a first cleaning state and a second cleaning state. Furthermore, the robotic vacuum cleaner 200 performs the second cleaning step after completing the first cleaning step. The specific operation of the aforementioned first and second cleaning steps can be controlled by the user or automatically controlled by preset operation times.

[0078] During the first cleaning step of the sweeping robot 200, the drive mechanism 4 is in its initial state, with both the fixed scraper 14 and the movable scraper 15 in contact with the mop roller 2. This drives the mop roller 2 to rotate, and the pipe or connector of the base station water pump 304 is connected to the drain outlet or connector of the main unit's wastewater box 201, maintaining communication. The base station water pump 304 is disconnected from the base station tray 305. The mop roller drive motor is turned on, and the base station water pump 303 is activated, spraying water onto the mop roller 2 through the nozzles in the base station tray 305. Wastewater is scraped off by the fixed scraper 14 and the movable scraper 15, filtered by the filter screen 3, and enters the wastewater tank 13. The main unit water pump 202 is activated, pumping the wastewater from the wastewater tank 13 into the main unit's wastewater box 201. The base station water pump 304 is activated, pumping the wastewater from the main unit's wastewater box 201 into the base station wastewater tank 302.

[0079] After a preset time, the sweeping robot 200 performs the second cleaning step. At this time, there is a lot of debris in the wastewater tank 13 and on the filter screen 3, requiring backwashing. During the second cleaning step, the drive mechanism 4 is in the driven state, the movable scraper 15 is separated from the mop roller 2, and the fixed scraper 14 remains in contact with the mop roller 2. The main unit water pump 202 is turned off, the base station water pump 304 is disconnected from the main unit wastewater box 201, and the base station water pump 304 is connected to the base station tray 305. Both the mop roller drive motor and the base station water supply pump 303 remain on. Water is sprayed onto the mop roller 2 through the nozzles in the base station tray 305. Most of the wastewater is scraped off by the fixed scraper 14 (the water at this point is much cleaner than in the first cleaning step). After being filtered by the filter screen 3, the wastewater enters the wastewater tank 13 and is stored there. When the wastewater tank 13 is full, the wastewater overflows and flows through the channel formed by the movable scraper 15 back into the base station tray 305. The wastewater in the base station tray 305 is then pumped to the base station wastewater tank 302 by the base station water pump 304. The process of wastewater overflowing from the wastewater tank 13 and being discharged through the channel is a backwashing process. This process washes the wastewater tank 13, the filter screen 3, and the scraper, removing debris from the wastewater tank 13, the filter screen 3, and the scraper (especially the movable scraper 15), thus achieving a self-cleaning function for the wastewater tank 13, the filter screen 3, and the scraper.

[0080] In summary, the present invention provides a mop assembly 100, which is configured with a fixed scraper 14, a movable scraper 15, and a drive mechanism 4. During the first stage of cleaning the mop roller 2, both the fixed scraper 14 and the movable scraper 15 are in contact with the mop roller 2, scraping the wastewater on the mop roller 2 into the wastewater tank 13, then into the host wastewater box 201, and finally into the base station wastewater tank 302. During the second stage of cleaning the mop roller 2, the movable scraper 15 is driven by the drive mechanism 4 to move relative to the fixed scraper 14, forming a channel between the fixed scraper 14, the movable scraper 15, and the mop roller 2. The wastewater on the mop roller 2 is first scraped off by the fixed scraper 14 and stored in the wastewater tank 13. After the wastewater in the wastewater tank 13 is full, it flows out in the opposite direction, then flows through the channel into the base station tray 305, and finally into the base station wastewater tank 302. During the backwashing process, dirt from the wastewater tank 13 is carried out, and the filter screen 3, fixed scraper 14, and movable scraper 15 are washed at the same time, realizing the backwashing function, improving the self-cleaning effect, reducing the frequency of manual cleaning of the wastewater tank 13, filter screen 3, scraper, etc. by the user, or eliminating the need for manual cleaning of the wastewater tank 13, filter screen 3, scraper, etc. by the user, thus improving the user experience.

[0081] In one embodiment, such as Figure 7 and Figure 9-15 As shown, the fixed scraper 14 has a mounting groove 145 in the middle, and the movable scraper 15 is installed in the mounting groove 145. The movable scraper 15 can move linearly or swing up and down in the mounting groove 145.

[0082] In this embodiment, a mounting groove 145 is provided in the middle of the fixed scraper 14, and the movable scraper 15 is slidably installed in the mounting groove 145, or the movable scraper 15 is rotatably installed in the mounting groove 145, so as to facilitate the assembly of the movable scraper 15 and the fixed scraper 14 together.

[0083] In one embodiment, such as Figure 7 and Figure 9-10 As shown, the mounting groove 145 is connected to the sewage tank 13, and the movable scraper 15 is slidably mounted in the mounting groove 145.

[0084] The drive mechanism 4 is connected to the wall of the mounting groove 145 and is used to drive the movable scraper to move linearly back and forth in the mounting groove 145.

[0085] When the drive mechanism 4 is in its initial state, the movable scraper 15 and the fixed scraper 14 are flush with the ends of the drag roller 2.

[0086] When the drive mechanism 4 is in the drive state, the end of the movable scraper 15 moves into the mounting groove 145.

[0087] In this embodiment, the movable scraper 15 is fitted into the mounting groove 145 and can slide within the mounting groove 145. The mounting groove 145 is connected to the sewage tank 13, providing clearance for the sliding of the movable scraper 15.

[0088] When the drive mechanism 4 is in its initial state, the movable scraper 15 and the fixed scraper 14 are flush with the ends of the mop roller 2 so as to contact the mop roller 2.

[0089] When the drive mechanism 4 is in the drive state, the movable scraper 15 moves toward the end of the mop roller 2 into the mounting groove 145, and the other end of the movable scraper 15 enters the sewage tank 13, and the movable scraper 15 separates from the mop roller 2.

[0090] In one embodiment, such as Figure 10 As shown, the drive mechanism 4 includes a motor 41, a gear 42, and a rack 43.

[0091] A rack 43 is installed at one end of the movable scraper 15, and the rack 43 is perpendicular to the axis of rotation of the drag roller 2.

[0092] The mounting groove 145 has a mounting cavity 146 in its groove wall. The motor 41 is mounted in the mounting cavity 146. The rack 43 is slidably mounted in the mounting cavity 146. The gear 42 is mounted on the shaft of the motor 41 and meshes with the rack 43.

[0093] In this embodiment, the drive mechanism 4 employs a combination of a motor 41, a gear 42, and a rack 43. The motor 41 can be a servo motor or a stepper motor. The mounting groove 145 has a mounting cavity 146 in its wall. The rack 43 is mounted on one end of the movable scraper 15, and is perpendicular to the axis of rotation of the drag roller 2. The rack 43 is located within the mounting cavity 146. The motor 41 is mounted in the mounting cavity 146, and the gear 42 is mounted on the shaft of the motor 41 and meshes with the rack 43. When the motor 41 is operating, the gear 42 drives the rack 43 to move, thereby moving the movable scraper 15.

[0094] A flexible sealing gasket is connected between the end of the movable scraper 15 and the opening of the mounting cavity 146. When the movable scraper 15 moves back and forth, the flexible sealing gasket will make adaptive deformation to seal the opening of the mounting cavity 146 and prevent sewage from entering the mounting cavity 146 and damaging the internal electrical components.

[0095] The distance that the movable scraper 15 moves back and forth can be set as needed.

[0096] In one embodiment, such as Figure 10 As shown, a set of drive mechanisms 4 are respectively installed between the opposite ends of the movable scraper 15 and the opposite sides of the groove wall of the mounting groove 145. The motors 41 of the two sets of drive mechanisms 4 operate synchronously, which improves the movement stability of the movable scraper 15.

[0097] In one embodiment, such as Figure 6-7 and Figure 9 As shown, the fixed scraper 14 includes a first upper scraper 141 and a first lower scraper 142, with the first lower scraper 142 connected to the lower part of the middle of the first upper scraper 141.

[0098] The mounting groove 145 is formed between the first lower scraper 142 and the first upper scraper 141, and the middle part of the first upper scraper 141 has a first notch 1411 that communicates with the mounting groove 145.

[0099] In this embodiment, the fixed scraper 14 consists of a first upper scraper 141 and a first lower scraper 142. The first upper scraper 141 is relatively long, and its length is approximately the same as that of the mop roller 2. The first lower scraper 142 is relatively short and is connected below the middle of the first upper scraper 141, thereby forming an installation groove 145 between the first lower scraper 142 and the first upper scraper 141. The middle of the first upper scraper 141 has a first notch 1411 that communicates with the installation groove 145. After the movable scraper 15 moves, the backwashed wastewater enters the installation groove 145 through the first notch 1411, and is then discharged through the channel between the movable scraper 15 and the mop roller 2.

[0100] In one embodiment, such as Figure 11-13 As shown, the movable scraper 15 is installed in the mounting groove 145 via the scraper pivot shaft 151, and the scraper pivot shaft 151 is arranged parallel to the shaft of the drag roller 2.

[0101] The drive mechanism 4 includes a motor 44, which is connected to the wall of the mounting groove 145. The rotating shaft of the motor 44 is connected to the scraper pivot shaft 151, which is used to drive the movable scraper to swing up and down in the mounting groove 145.

[0102] When the drive mechanism 4 is in its initial state, the movable scraper 15 and the fixed scraper 14 are flush with the ends of the drag roller 2.

[0103] When the drive mechanism 4 is in the drive state, the movable scraper 15 swings at a preset angle, and the end of the movable scraper 15 separates from the end of the fixed scraper 14.

[0104] In this embodiment, the movable scraper 15 groove is installed in a swing manner. It is installed in the mounting groove 145 through the scraper pivot shaft 151, and the scraper pivot shaft 151 is arranged parallel to the rotation shaft of the mop roller 2.

[0105] The drive mechanism 4 uses a motor 44, which can be a stepper motor or a servo motor. The motor 44 drives the movable scraper to swing up and down in the mounting slot 145.

[0106] When the drive mechanism 4 (motor 44) is in its initial state, the movable scraper 15 and the fixed scraper 14 are flush with the ends of the mop roller 2 so that they both contact the mop roller 2 to scrape water.

[0107] When the drive mechanism 4 (motor 44) is in the drive state, the movable scraper 15 swings downward at a preset angle, and the end of the movable scraper 15 separates from the end of the fixed scraper 14 to form a channel.

[0108] Preferably, when the drive mechanism 4 is in its initial state, the top surfaces of the movable scraper 15 and the fixed scraper 14 are flush.

[0109] In one embodiment, such as Figure 14-15 As shown, the fixed scraper 14 includes a second upper scraper 143 and a second lower scraper 144, with the second lower scraper 144 connected to the lower part of the middle of the second upper scraper 143.

[0110] The mounting groove 145 is formed between the second lower scraper 144 and the second upper scraper 143, and the second upper scraper 143 has a second notch 1431 in the middle that communicates with the mounting groove 145.

[0111] The two ends of the second scraper 144 are each connected to a movable scraper 15.

[0112] When the drive mechanism 4 is in its initial state, the upper end of the movable scraper 15 is in contact with the second upper scraper 143.

[0113] When the drive mechanism 4 is in the drive state, the movable scraper 15 swings at a preset angle, and the upper end of the movable scraper 15 separates from the second upper scraper 143.

[0114] In this embodiment, the fixed scraper 14 includes a longer second upper scraper 143 and a shorter second lower scraper 144. The second upper scraper 143 is approximately the same length as the mop roller 2, and the second lower scraper 144 is connected below the middle of the second upper scraper 143. A mounting groove 145 is formed between the second lower scraper 144 and the second upper scraper 143. The middle of the second upper scraper 143 has a second notch 1431, which communicates with the mounting groove 145.

[0115] In this embodiment, two movable scrapers 15 are used, and the two movable scrapers 15 are respectively installed at both ends of the second lower scraper 144 through scraper pivot shafts.

[0116] The surfaces of the movable scraper 15, the second upper scraper 143, and the second lower scraper 144 facing the side of the mop roller 2 are flush and can all contact the mop roller 2.

[0117] When the drive mechanism 4 (motor 44) is in the initial state, the ends of the two movable scrapers 15 extend upward at an angle and contact the second upper scraper 143, which serves to close the mounting groove 145. The scraped-off sewage enters the sewage tank 13 after being filtered by the filter screen 3.

[0118] When the drive mechanism 4 (motor 44) is in the drive state, the movable scraper 15 swings outward at a preset angle, and the upper end of the movable scraper 15 separates from the second upper scraper 143. The sewage overflowing from the sewage tank 13 enters the mounting groove 145 through the second notch 1431, and is then discharged through the gap or channel formed between the upper end of the movable scraper 15, the second upper scraper 143 and the mop roller 2.

[0119] like Figure 16 As shown, an embodiment of the present invention provides a sweeping robot 200, which is equipped with a mop assembly 100 as described in any of the preceding embodiments.

[0120] The sweeping robot 200 includes a main unit wastewater box 201 and a main unit water pump 202. The main unit water pump 202 is connected to the main unit wastewater box 201 through a pipe, and the main unit water pump 202 is connected to the wastewater tank 13 through a pipe.

[0121] When the sweeping robot 200 is in the first cleaning state, the main unit water pump 202 is in working state, the drive mechanism 4 is in the initial state, and the sewage in the sewage tank 13 is pumped into the main unit sewage box 201.

[0122] When the robot vacuum cleaner 200 is in the second cleaning state, the main unit water pump 202 is in the off state, the drive mechanism 4 is in the drive state, and the sewage in the sewage tank 13 overflows to backwash the filter screen 3 and is discharged through the channel.

[0123] The sweeping robot 200 provided by this invention has a mop assembly 100 installed inside. For the structure, construction and working principle of the mop assembly 100, please refer to the previous description of the mop assembly 100, which will not be repeated here.

[0124] When the robotic vacuum cleaner 200 returns to the base station tray 305 of the robot base station 300 to perform a self-cleaning operation, the robotic vacuum cleaner 200 has a first cleaning step and a second cleaning step, and correspondingly, the robotic vacuum cleaner 200 has a first cleaning state and a second cleaning state. Furthermore, the robotic vacuum cleaner 200 performs the second cleaning step after completing the first cleaning step. The specific operation of the aforementioned first and second cleaning steps can be controlled by the user or automatically controlled by preset operation times.

[0125] During the first cleaning step of the sweeping robot 200, the drive mechanism 4 is in its initial state, with both the fixed scraper 14 and the movable scraper 15 in contact with the mop roller 2. This drives the mop roller 2 to rotate, and the pipe or connector of the base station water pump 304 is connected to the drain outlet or connector of the main unit's wastewater box 201, maintaining communication. The base station water pump 304 is disconnected from the base station tray 305. The mop roller drive motor is turned on, and the base station water pump 303 is activated, spraying water onto the mop roller 2 through the nozzles in the base station tray 305. Wastewater is scraped off by the fixed scraper 14 and the movable scraper 15, filtered by the filter screen 3, and enters the wastewater tank 13. The main unit water pump 202 is activated, pumping the wastewater from the wastewater tank 13 into the main unit's wastewater box 201. The base station water pump 304 is activated, pumping the wastewater from the main unit's wastewater box 201 into the base station wastewater tank 302.

[0126] After a preset time, the sweeping robot 200 performs the second cleaning step. At this time, there is a lot of debris in the wastewater tank 13 and on the filter screen 3, requiring backwashing. During the second cleaning step, the drive mechanism 4 is in the driven state, the movable scraper 15 is separated from the mop roller 2, and the fixed scraper 14 remains in contact with the mop roller 2. The main unit water pump 202 is turned off, the base station water pump 304 is disconnected from the main unit wastewater box 201, and the base station water pump 304 is connected to the base station tray 305. Both the mop roller drive motor and the base station water supply pump 303 remain on. Water is sprayed onto the mop roller 2 through the nozzles in the base station tray 305. Most of the wastewater is scraped off by the fixed scraper 14 (the water at this point is much cleaner than in the first cleaning step). After being filtered by the filter screen 3, the wastewater enters the wastewater tank 13 and is stored there. When the wastewater tank 13 is full, the wastewater overflows and flows through the channel formed by the movable scraper 15 back into the base station tray 305. The wastewater in the base station tray 305 is then pumped to the base station wastewater tank 302 by the base station water pump 304. The process of wastewater overflowing from the wastewater tank 13 and being discharged through the channel is a backwashing process. This process washes the wastewater tank 13, the filter screen 3, and the scraper, removing debris from the wastewater tank 13, the filter screen 3, and the scraper (especially the movable scraper 15), thus achieving a self-cleaning function for the wastewater tank 13, the filter screen 3, and the scraper.

[0127] Combination Figure 1-17 As shown, an embodiment of the present invention provides a sweeping robot system, including a robot base station 300 and the sweeping robot 200 described in the aforementioned embodiment.

[0128] The robot base station 300 includes a base station clean water tank 301, a base station wastewater tank 302, a base station water supply pump 303, and a base station water pump 304.

[0129] The bottom of the robot base station 300 has a base station tray 305 for the robot vacuum cleaner 200 to enter for cleaning, and the base station tray 305 has a nozzle.

[0130] The base station water tank 301, the base station water supply pump 303, and the nozzle are connected in sequence through pipes.

[0131] The base station tray 305, the base station water pump 304, and the base station sewage tank 302 are connected in sequence through pipes.

[0132] When the sweeping robot 200 is in the base station tray 305 and in the first cleaning state, the base station water pump 304 is connected to the main unit wastewater box 201, and the base station water pump 304 is disconnected from the base station tray 305. Both the base station water supply pump 303 and the base station water pump 304 are in working state, and the wastewater in the main unit wastewater box 201 is pumped to the base station wastewater tank 302 by the base station water pump 304.

[0133] When the robot vacuum cleaner 200 is in the base station tray 305 and in the second cleaning state, the base station water pump 304 is disconnected from the main unit wastewater box 201, while the base station water pump 304 is connected to the base station tray 305. Both the base station water supply pump 303 and the base station water pump 304 are in working state, and the wastewater in the base station tray 305 is pumped to the base station wastewater tank 302 by the base station water pump 304.

[0134] The robotic vacuum cleaner system provided by this invention includes a robot base station 300 and a robotic vacuum cleaner 200. For details regarding the structure, construction, and working principle of the robotic vacuum cleaner 200, please refer to the preceding description of the robotic vacuum cleaner 200; further details will not be repeated here.

[0135] The robot base station 300 includes a base station clean water tank 301, a base station wastewater tank 302, a base station water supply pump 303, and a base station water pump 304. The base station 300 has a base station tray 305 at its bottom, and a nozzle is mounted on the base station tray 305.

[0136] The base station water tank 301, the base station water pump 303, and the spray nozzle are connected in sequence via pipes. The base station water tank 301 is connected to the tap water pipe 306. During cleaning, the base station water pump 303 is turned on, and the spray nozzle sprays clean water onto the mop roller 2 in the base station tray 305.

[0137] The tray 305, the base station water pump 304, and the base station wastewater tank 302 are connected in sequence through pipes. When the sweeping robot 200 performs the second stage of cleaning, the base station water pump 304 is turned on to pump the wastewater in the tray 305 into the base station wastewater tank 302.

[0138] The base station water pump 304 can also be connected to and disconnected from the drainage interface of the main unit's wastewater box 201 via pipes and corresponding connectors. This part is part of the prior art and will not be described in detail here.

[0139] Solenoid valves can be installed on the pipes connected to the main unit sewage box 201, the pipes connected to the base station tray 305, and other pipes as needed to control the on / off state of each pipe.

[0140] When the robotic vacuum cleaner 200 returns to the base station tray 305 to perform the first cleaning step, the drive mechanism 4 is in its initial state, with both the fixed scraper 14 and the movable scraper 15 in contact with the mop roller 2. This drives the mop roller 2 to rotate, and the pipe or connector of the base station water pump 304 is connected to the drain outlet or connector of the main unit's wastewater box 201, thus maintaining communication. The base station water pump 304 is then disconnected from the base station tray 305. The mop roller drive motor is activated, and the base station water pump 303 is turned on, spraying water onto the mop roller 2 through the nozzles in the base station tray 305. Wastewater is scraped off by the fixed scraper 14 and the movable scraper 15, filtered by the filter screen 3, and enters the wastewater tank 13. The main unit water pump 202 is activated, pumping the wastewater from the wastewater tank 13 into the main unit's wastewater box 201. The base station water pump 304 is activated, pumping the wastewater from the main unit's wastewater box 201 into the base station wastewater tank 302.

[0141] After a preset time, the sweeping robot 200 performs the second cleaning step on the base station tray 305. At this time, there is a lot of debris in the wastewater tank 13 and on the filter screen 3, requiring backwashing. During the second cleaning step, the drive mechanism 4 is in the driven state, the movable scraper 15 is separated from the mop roller 2, and the fixed scraper 14 remains in contact with the mop roller 2. The main unit water pump 202 is turned off, the base station water pump 304 is disconnected from the main unit wastewater box 201, and the base station water pump 304 is connected to the base station tray 305. Both the mop roller drive motor and the base station water supply pump 303 remain on. Water is sprayed onto the mop roller 2 through the nozzles in the base station tray 305. Most of the wastewater is scraped off by the fixed scraper 14 (the water at this point is much cleaner than in the first cleaning step). After being filtered by the filter screen 3, the wastewater enters the wastewater tank 13 and is stored there. When the wastewater tank 13 is full, the wastewater overflows and flows through the channel formed by the movable scraper 15 back into the base station tray 305. The wastewater in the base station tray 305 is then pumped to the base station wastewater tank 302 by the base station water pump 304. The process of wastewater overflowing from the wastewater tank 13 and being discharged through the channel is a backwashing process. This process washes the wastewater tank 13, the filter screen 3, and the scraper, removing debris from the wastewater tank 13, the filter screen 3, and the scraper (especially the movable scraper 15), thus achieving a self-cleaning function for the wastewater tank 13, the filter screen 3, and the scraper.

[0142] The start-up times of the aforementioned host water pump 202, base station water supply pump 303, and base station water pump 304 can be set as needed.

[0143] The above-mentioned operations in this invention can be automatically controlled by the control system of the robot vacuum cleaner and / or the base station, or can be controlled by a remote control, touch screen, etc.

[0144] As needed, the above technical solutions can be combined to achieve the best technical effect.

[0145] The above are merely the principles and preferred embodiments of the present invention. It should be noted that, for those skilled in the art, several other modifications can be made based on the principles of the present invention, and these modifications should also be considered within the scope of protection of the present invention.

Claims

1. A mop assembly, comprising a mop housing and a mop roller pivotally mounted in the mop housing; The mop housing has a wastewater tank located on one side of the mop roller, with the opening of the wastewater tank facing the mop roller and being substantially horizontal towards the inside of the mop housing. A filter screen is installed in the sewage tank, and the filter screen is lower than the opening of the sewage tank; Its features are, A fixed scraper and a movable scraper are installed on the lower edge of the groove, and the movable scraper is movably connected to the fixed scraper. The fixed scraper has a mounting groove, and the movable scraper is installed in the mounting groove, and the movable scraper is movable relative to the fixed scraper in the mounting groove; The mop housing is also equipped with a drive mechanism for driving the movable scraper to move relative to the fixed scraper, and the drive mechanism is connected to the movable scraper. When the drive mechanism is in its initial state, both the movable scraper and the fixed scraper are in contact with the mop roller; When the drive mechanism is in the driving state, the drive mechanism drives the movable scraper to move relative to the fixed scraper, so that the movable scraper and the fixed scraper are staggered, and the movable scraper no longer contacts the mop roller, thereby forming a channel between the movable scraper, the fixed scraper and the mop roller for the backwash wastewater overflowing from the wastewater tank to flow out. The backwash wastewater will clean the wastewater tank, the filter screen and the scraper.

2. The mop assembly according to claim 1, characterized in that, The mounting groove is connected to the sewage tank, and the movable scraper is slidably mounted in the mounting groove; The drive mechanism is connected to the wall of the mounting groove and is used to drive the movable scraper to move linearly back and forth in the mounting groove. When the drive mechanism is in its initial state, the movable scraper and the fixed scraper are flush with the ends of the mop roller; When the drive mechanism is in the drive state, the end of the movable scraper moves into the mounting groove.

3. The mop assembly according to claim 2, characterized in that, The drive mechanism includes a motor, gears, and a rack; A rack is installed at one end of the movable scraper, and the rack is perpendicular to the axis of rotation of the mop roller; The mounting groove has a mounting cavity in its wall, the motor is mounted in the mounting cavity, the rack is slidably assembled in the mounting cavity, and the gear is mounted on the motor shaft and meshes with the rack.

4. The mop assembly according to claim 3, characterized in that, A set of driving mechanisms is respectively installed between the opposite ends of the movable scraper and the groove walls on the opposite sides of the mounting groove, and the motors of the two sets of driving mechanisms operate synchronously.

5. The mop assembly according to claim 2, characterized in that, The fixed scraper includes a first upper scraper and a first lower scraper, wherein the first lower scraper is connected to the lower part of the middle of the first upper scraper; The mounting groove is formed between the first lower scraper and the first upper scraper, and the middle part of the first upper scraper has a first notch that communicates with the mounting groove.

6. The mop assembly according to claim 1, characterized in that, The movable scraper is installed in the mounting groove via a scraper pivot shaft, and the scraper pivot shaft is arranged parallel to the pivot shaft of the drag roller; The driving mechanism includes a motor, which is connected to the wall of the mounting groove. The motor's rotating shaft is connected to the scraper's pivot shaft, and is used to drive the movable scraper to swing up and down in the mounting groove. When the drive mechanism is in its initial state, the movable scraper and the fixed scraper are flush with the ends of the mop roller; When the drive mechanism is in the drive state, the movable scraper swings at a preset angle, and the end of the movable scraper separates from the end of the fixed scraper.

7. The mop assembly according to claim 6, characterized in that, The fixed scraper includes a second upper scraper and a second lower scraper, with the second lower scraper connected to the lower part of the middle of the second upper scraper; The mounting groove is formed between the second lower scraper and the second upper scraper, and the middle part of the second upper scraper has a second notch that communicates with the mounting groove; Each end of the second lower scraper is connected to a movable scraper; When the drive mechanism is in its initial state, the upper end of the movable scraper is in contact with the second upper scraper; When the drive mechanism is in the drive state, the movable scraper swings at a preset angle, and the upper end of the movable scraper separates from the second upper scraper.

8. A robotic vacuum cleaner, characterized in that, The sweeping robot is equipped with a mop assembly as described in any one of claims 1-7; The sweeping robot includes a main unit wastewater box and a main unit water pump. The main unit water pump is connected to the main unit wastewater box through a pipe, and the main unit water pump is connected to the wastewater tank through a pipe. When the sweeping robot is in the first cleaning state, the main unit's water pump is in working state, the drive mechanism is in the initial state, and the sewage in the sewage tank is pumped into the main unit's sewage box. When the sweeping robot is in the second cleaning state, the main water pump is in the off state, the drive mechanism is in the drive state, and the sewage in the sewage tank overflows to backwash the filter and is discharged through the channel.

9. A robotic vacuum cleaner system, characterized in that, Includes a robot base station and the sweeping robot as described in claim 8; The robot base station includes a base station clean water tank, a base station wastewater tank, a base station water supply pump, and a base station water pump; The bottom of the robot base station has a base station tray for the sweeping robot to enter and clean, and the base station tray has a spray nozzle; The base station water tank, the base station water supply pump, and the nozzle are connected in sequence via pipes. The base station tray, the base station water pump, and the base station sewage tank are connected in sequence by pipes; When the sweeping robot is in the base station tray and in the first cleaning state, the base station water pump is connected to the main unit wastewater box, the base station water pump is disconnected from the base station tray, the base station water supply pump and the base station water pump are both in working state, and the wastewater in the main unit wastewater box is pumped to the base station wastewater tank by the base station water pump. When the sweeping robot is in the base station tray and in the second cleaning state, the base station water pump is disconnected from the main unit wastewater box, and the base station water pump is connected to the base station tray. Both the base station water supply pump and the base station water pump are in operation, and the wastewater in the base station tray is pumped to the base station wastewater tank by the base station water pump.

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