Cleaning module and cleaning robot

Abstract

The invention discloses a cleaning module and a cleaning robot, and relates to the technical field of cleaning systems.The cleaning module comprises a mounting support, a driving motor, a roller assembly and a linear driving mechanism. The driving motor is fixed to the mounting support, and a first driving part of the driving motor extends in the transverse direction and can rotate. The roller assembly is arranged at one end of the driving motor and comprises a detachably-mounted roller support, a first roller and a second roller are transversely arranged at intervals and rotationally mounted at the bottom of the roller support, and the second roller can slide in the axial direction. The double rollers are driven by the single driving motor, and the rotating stroke of the first roller is converted into the axial moving stroke of the second roller by the linear driving mechanism, so that the second roller is expanded outwards to adapt to cleaning of wall edges and wall corners; the driving motor and the water supply assembly are fixedly arranged on the mounting bracket and do not need to move along with the second roller, so that complex layout of waterways, circuits and transmission structures is avoided; the roller assembly is integrally detachable, transmission connection is automatically disconnected during disassembly, and cleaning and maintenance are facilitated.

Description

Technical Field

[0001] This invention relates to the field of cleaning system technology, and in particular to a cleaning module and a cleaning robot. Background Technology

[0002] In existing technologies, most robots used for floor cleaning adopt a disc-shaped design. While this shape allows for flexible turning and movement in open areas, the roller or rotating brush cleaning components at the bottom are limited by the geometric boundaries of the circular body, making it difficult to effectively reach wall edges and corners. Specifically, when a circular robot moves in a straight line along a wall, there is always a gap between its side and the wall determined by the robot's outline; when it attempts to approach a corner, the circular outline cannot completely fit into the right angle, resulting in the cleaning components' inability to cover the corner, creating cleaning blind spots. This problem is particularly prominent in home or office environments, where dust and debris easily accumulate along walls, and incomplete cleaning over time will affect the overall hygiene. Therefore, there is an urgent need to design a cleaning component structure that can effectively extend to corner areas, ensuring efficient cleaning capabilities while also considering a reasonable structural layout and convenient maintenance for users, to solve the problems of cleaning dead spots and inconvenient maintenance inherent in traditional disc-shaped cleaning robots. Summary of the Invention

[0003] The main objective of this invention is to propose a cleaning module and a cleaning robot, which aims to solve the problems of cleaning dead spots and inconvenient maintenance in traditional disc-shaped cleaning robots.

[0004] To achieve the above objectives, the cleaning module proposed in this invention includes:

[0005] Mounting bracket;

[0006] A drive motor is fixedly mounted on the mounting bracket. The drive motor has a first drive part that extends laterally and is rotatable about its axis.

[0007] A roller assembly, located at one lateral end of the drive motor, includes a roller bracket detachably mounted to the mounting bracket, a first roller, and a second roller. Both the first and second rollers extend laterally and are spaced apart laterally. Both the first and second rollers are rotatably mounted on the bottom of the roller bracket about their own axes. The second roller is also slidably mounted on the roller bracket along its axial direction to move away from or towards the first roller.

[0008] A linear drive mechanism is disposed between the first roller and the second roller, and is used to convert the rotational stroke of the first roller into the axial movement stroke of the second roller.

[0009] The first roller has a first mating part at one end facing the drive motor. The first mating part is detachably connected to the first drive part so that the first roller is driven to rotate.

[0010] In one embodiment, the roller bracket is detachably and movably connected to the mounting bracket in the lateral direction. The first driving part and the first mating part are respectively provided with a first concave-convex structure and a second concave-convex structure at their respective close ends. When the roller assembly is laterally close to the driving motor, the first tooth and the second tooth are abutted against each other in the axial and circumferential directions so as to drive the first mating part to rotate synchronously when the first driving part rotates.

[0011] In one embodiment, one of the mounting bracket and the roller bracket is provided with a slot that extends laterally and penetrates the side, and the other is provided with a retaining part that slides with the slot.

[0012] In one embodiment, the cleaning module further includes:

[0013] A squeegee, mounted on the roller bracket, is used to scrape away dirt from the first roller and the second roller as they rotate; and,

[0014] A dirt collection assembly is used to collect dirt scraped off by the wiper blade, and the dirt collection assembly is detachably connected to the mounting bracket.

[0015] In one embodiment, the sludge collection assembly includes:

[0016] The bottom shell has a sewage tank with the slot facing upwards, the sewage tank being used to communicate with a sewage suction device;

[0017] A filter screen, covering the opening of the wastewater tank; and,

[0018] A limiting cover is provided above the filter screen to press the filter screen firmly against the bottom shell.

[0019] In one embodiment, both the limiting cover and the filter screen are rotatably mounted on the bottom shell about a laterally extending axis of rotation.

[0020] In one embodiment, the bottom of the wiper blade is provided with a guide surface, which is inclined downward in a direction away from the first roller and the second roller.

[0021] In one embodiment, the cleaning module further includes a water supply assembly mounted on the mounting bracket, the water outlet of the water supply assembly being disposed toward the roller bracket;

[0022] The roller support extends laterally and has multiple water passage holes arranged at intervals in the lateral direction, located below the water outlet of the water supply component.

[0023] In one embodiment, the roller assembly further includes a water distribution strip mounted on the roller support. The water distribution strip is used to spread the cleaning water flowing out of the outlet of the water supply assembly laterally, so that the cleaning water can be evenly distributed in the first roller and the second roller.

[0024] In one embodiment, the water distribution strip has a first water distribution section extending laterally. The first water distribution section extends from the outer wall surface of the roller bracket toward the inner wall surface of the mounting bracket and is interference-fitted with the mounting bracket. The first water distribution section is located below the water outlet of the water supply component and the plurality of water passage holes to receive the cleaning water flowing out of the water outlet of the water supply component and spread the cleaning water to the plurality of water passage holes.

[0025] In one embodiment, the water distribution strip has a second water distribution section that extends laterally. The second water distribution section extends from the inner wall of the roller support toward the outer wall of the first roller and the second roller and is interference-fitted with the first roller and the second roller. The second water distribution section is located below the plurality of water passage holes to receive the cleaning water flowing out of the plurality of water passage holes and spread the cleaning water to the outer wall of the first roller and the second roller.

[0026] In one embodiment, the linear drive structure includes a second drive portion disposed on the first roller and a second mating portion disposed on the second roller. One of the second drive portion and the second mating portion is provided with an external thread, and the other is provided with an internal thread that mates with the external thread.

[0027] In one embodiment, the end of the second roller facing the first roller is provided with a threaded hole;

[0028] The second drive unit extends laterally, with one end connected to one end of the first roller and the other end provided with the external thread. The other end of the second drive unit extends into the threaded hole to engage with the threaded hole.

[0029] In one embodiment, the linear drive structure further includes a stop portion, which is used to limit and stop the second roller at an outer limit position during the outward movement stroke of the second roller.

[0030] In one embodiment, the second drive unit includes a drive shaft and a rotor. The drive shaft extends laterally, one end of the drive shaft is connected to the first roller, and the other end is provided with the rotor, which has an external thread.

[0031] The second roller has a threaded hole at one end facing the first roller, and a stop is provided in the threaded hole. The stop is located on the side of the rotor closer to the first roller, so that when the second roller moves away from the first roller, the stop cooperates with the rotor to limit the second roller to the outer limit position.

[0032] In one embodiment, the stop portion is arranged in a ring shape and surrounds the periphery of the drive shaft; and / or

[0033] The outer peripheral wall of the stop portion is provided with external threads for screwing into the threaded hole.

[0034] In one embodiment, the linear drive structure further includes:

[0035] A connecting bracket is fixedly connected to the roller bracket and located between the first roller and the second roller. The connecting bracket has a first side and a second side that are arranged opposite each other in the lateral direction, with the first side facing the first roller and the second side facing the second roller.

[0036] A first bearing is connected between the end of the first roller and the first side, such that the first roller is rotatably mounted on the connecting bracket; and,

[0037] A second bearing is connected between the end of the second roller and the second side, so that the second roller is rotatably mounted on the connecting bracket.

[0038] In one embodiment, the linear drive structure further includes a second drive portion extending laterally, one end of which is fixedly connected to the first roller, and the other end of which is threadedly engaged with the second roller.

[0039] The connecting bracket is configured as a ring and is sleeved on the periphery of the second drive unit. The bearing seat of the first bearing is fixedly connected to the first roller, and the inner ring of the first bearing is fixedly connected to the connecting bracket.

[0040] The bearing housing of the second bearing is fixedly connected to the connecting bracket, and the inner ring of the second bearing is fixedly connected to the second roller.

[0041] In one embodiment, the cleaning module further includes an electronic control device electrically connected to the drive motor for controlling the operation of the drive motor to cause the first roller to rotate forward and reverse.

[0042] The present invention also proposes a cleaning robot, which includes the cleaning module described above.

[0043] The technical solution provided by this invention has at least the following advantages:

[0044] A single drive motor simultaneously rotates two rollers, and a linear drive mechanism converts this rotation into axial movement of the second roller. The first roller serves as the primary cleaning unit, while the second roller acts as an auxiliary outward extension unit. This allows the drive motor and the water supply assembly for the cleaning rollers to be fixedly mounted on the mounting bracket, eliminating the need for lateral movement and avoiding complex structures such as retractable water channels, movable circuits, or linked transmission mechanisms to accommodate movement. When cleaning or maintenance is required, simply removing the roller bracket from the mounting bracket allows the first roller, second roller, and linear drive mechanism to detach from the drive motor and main structure along with the roller bracket, enabling rapid overall disassembly. At this point, the first mating part and the first drive part automatically separate, eliminating the need for additional disassembly of the transmission connection, thus facilitating quick cleaning or replacement and simplifying maintenance. Attached Figure Description

[0045] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0046] Figure 1 This is a schematic diagram of a structure of an embodiment of the cleaning module provided by the present invention;

[0047] Figure 2 for Figure 1 A schematic diagram of the structure when the second roller is in its initial position;

[0048] Figure 3 for Figure 1 A schematic diagram of the structure when the second roller is in the outward expansion position;

[0049] Figure 4 and Figure 5 for Figure 1 A schematic diagram of the structure of the middle drum assembly and the dirt collection assembly after disassembly;

[0050] Figure 6 for Figure 1 Schematic diagram of CIMC's wastewater treatment unit;

[0051] Figure 7 for Figure 6A schematic diagram of the structure after the middle filter and limiting cover are opened;

[0052] Figure 8 for Figure 1 A side view of the cleaning module in the diagram;

[0053] Figure 9 for Figure 1 A side cross-sectional view of the cleaning module in the diagram;

[0054] Figure 10 for Figure 8 Schematic diagram of the cross section of AA;

[0055] Figure 11 for Figure 10 Enlarged diagram of point B in the middle.

[0056] Explanation of icon numbers:

[0057] 1. Mounting bracket; 2. Drive motor; 21. First drive unit; 3. Roller assembly; 31. Roller bracket; 31a. Water passage hole; 32. First roller; 321. First mating part; 33. Second roller; 33a. Threaded hole; 34. Water distribution bar; 341. First water distribution part; 342. Second water distribution part; 4. Linear drive mechanism; 41. Second drive unit; 411. Drive shaft; 412. Rotor; 42. Second mating part; 43. Stop part; 44. Connecting bracket; 45. First bearing; 46. Second bearing; a. Slot; b. Holding part; 5. Scraper; 51. Guide surface; 6. Sludge collection assembly; 61. Bottom shell; 61a. Sludge tank; 62. Filter screen; 63. Limiting cover plate; 7. Water supply assembly.

[0058] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0059] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0060] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0061] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0062] This invention proposes a cleaning module suitable for various locations requiring floor cleaning, such as homes, offices, hospitals, schools, and hotels, especially for cleaning hard-to-reach areas like furniture edges, wall bases, and corners. This cleaning module can be integrated into cleaning equipment such as robotic vacuum cleaners, floor scrubbers, and window cleaning robots to remove dust, hair, particles, and dry or wet stains from floors or surfaces. The cleaning module can also be applied to commercial cleaning equipment or mobile automatic cleaning devices to achieve efficient and comprehensive cleaning of indoor environments. For ease of explanation, the following description uses a disc-shaped robotic vacuum cleaner as an example to illustrate its structural layout and wall-side cleaning function. For other applications, such as square-bodied cleaning robots, long corridor cleaning devices, or wall cleaning robots, the position, angle, and driving method of the cleaning module can be adaptively adjusted according to the actual installation space, travel path, and cleaning needs; this specification does not limit these adjustments.

[0063] Please see Figures 1 to 3In one embodiment of the present invention, the cleaning module includes a mounting bracket 1, a drive motor 2, a roller assembly 3, and a linear drive mechanism 4. The drive motor 2 is fixedly mounted on the mounting bracket 1 and has a first drive portion 21 extending laterally, which is rotatable about its axis. The roller assembly 3 is located at one lateral end of the drive motor 2 and includes a roller bracket 31 detachably mounted on the mounting bracket 1, a first roller 32, and a second roller 33. Both the first roller 32 and the second roller 33 extend laterally and are spaced apart laterally. Both the first roller 32 and the second roller 33 are rotatably mounted on the bottom of the roller bracket 31 about their own axes. The second roller 33 is also slidably mounted on the roller bracket 31 along its axial direction to move away from or towards the first roller 32. The linear drive mechanism 4 is located between the first roller 32 and the second roller 33 and is used to convert the rotational stroke of the first roller 32 into the axial movement stroke of the second roller 33. The first roller 32 has a first mating part 321 at one end facing the drive motor 2. The first mating part 321 is detachably connected to the first drive part 21 so that the first roller 32 is driven to rotate.

[0064] Understandably, the mounting bracket 1 serves as the basic load-bearing structure for the entire cleaning module, used to fix other functional components. The drive motor 2 is mounted on the mounting bracket 1, and the first drive part 21 of the drive motor 2 extends laterally and can rotate around its own axis, providing a power source for the entire roller assembly 3.

[0065] This manual does not limit the specific type of drive motor 2, which can be a DC motor, brushless motor, etc., nor does it limit the output form of the first drive unit 21, which can be an output shaft, spline shaft, or coupling structure, and is not limited here.

[0066] The roller bracket 31 is detachably mounted on the mounting bracket 1, allowing the entire roller assembly 3 to be removed as a whole. The first roller 32 and the second roller 33 both extend laterally and are arranged at intervals, each rotatably mounted on the bottom of the roller bracket 31. The second roller 33 is not only rotatable but also slidable along its axial direction to achieve position adjustment.

[0067] A first mating part 321 is provided at one end of the first roller 32 near the drive motor 2. The first mating part 321 is detachably connected to the first drive part 21 of the drive motor 2. When assembled in place, it can realize the stable transmission of power so that the first roller 32 is driven by the drive motor 2 to rotate around its own axis.

[0068] When the roller bracket 31 is installed on the mounting bracket 1, the first mating part 321 and the first driving part 21 are automatically aligned and connected. When subsequent cleaning or maintenance is required, the roller bracket 31 can be removed from the mounting bracket 1 in the disassembly direction to drive the first roller 32 to move synchronously, thereby causing the first mating part 321 to disengage from the first driving part 21 and disconnecting the transmission connection.

[0069] The linear drive mechanism 4 is located between the first roller 32 and the second roller 33. It converts the rotation of the first roller 32 into the linear motion of the second roller 33 extending outward or retracting inward along the axial direction through mechanical linkage, thereby controlling the distance change of the second roller 33 relative to the first roller 32.

[0070] It should be noted that the linear drive mechanism 4 can be in the form of a cam push rod, gear rack or threaded drive, etc. The specific structure can be flexibly selected according to the spatial layout and transmission requirements. This specification does not limit this aspect in the embodiments.

[0071] By setting the first roller 32 as the main cleaning unit and the second roller 33 as the auxiliary outward extension unit, the drive motor 2 and the water supply component 7 for cleaning the roller assembly 3 can be fixedly installed on the mounting bracket 1 without participating in lateral movement.

[0072] Compared to the existing technology of lateral movement of the entire roller assembly, this method avoids the need to set up retractable water channels, movable circuits or linkage transmission structures to adapt to the movement, thereby simplifying the layout design of fluid passages and electrical connections, and reducing sealing difficulty and assembly complexity.

[0073] In this way, by independently driving the second roller 33 along the axial direction using the linear drive mechanism 4, cleaning coverage of the wall edges and corner areas can be achieved, while meeting the requirements of outward extension and keeping the main components stationary. This arrangement reduces the number of moving parts, improves structural stability and reliability, and is beneficial for reducing installation space, optimizing internal layout, and reducing the difficulty of later maintenance.

[0074] A single drive motor 2 simultaneously drives two rollers, and the linear drive mechanism 4 converts the rotation into axial movement of the second roller 33. This allows the cleaning module to adjust the outward extension of the rollers during operation, enabling better contact with walls and even cleaning into corners. The first roller 32 is designated as the main cleaning unit, and the second roller 33 serves as an auxiliary outward extension unit. The drive motor 2 and the water supply component 7 for the cleaning roller assembly 3 can be fixedly mounted on the mounting bracket 1 without involving lateral movement, avoiding the need for complex structures such as retractable water channels, movable circuits, or linkage transmission mechanisms to accommodate movement. When cleaning or maintenance is required, simply removing the roller bracket 31 from the mounting bracket 1 allows the first roller 32, second roller 33, and linear drive mechanism 4 to detach from the drive motor 2 and the main structure along with the roller bracket 31, achieving rapid overall disassembly. At this time, the first mating part 321 automatically separates from the first drive part 21, eliminating the need for additional disassembly of the transmission connection, thus facilitating quick cleaning or replacement and simplifying maintenance.

[0075] Specifically, to improve the ease of assembly and connection reliability of roller assembly 3, please refer to [link / reference]. Figures 4 to 5 In this embodiment, the roller bracket 31 is detachably and movably connected to the mounting bracket 1 in the lateral direction. The first driving part 21 and the first mating part 321 are respectively provided with a first concave-convex structure and a second concave-convex structure at their respective close ends. When the roller assembly 3 is laterally close to the driving motor 2, the first tooth and the second tooth are abutted against each other in the axial and circumferential directions so as to drive the first mating part 321 to rotate synchronously when the first driving part 21 rotates.

[0076] "The roller bracket 31 is detachably and movably connected to the mounting bracket 1 in the lateral direction," meaning that the roller bracket 31 can slide into or out of the mounting bracket 1 in the lateral direction, achieving a movable connection. This connection method can be achieved through the cooperation of guide rails and grooves, a slider guiding structure, or elastic buckle limiting, allowing the roller bracket 31 to slide smoothly into place during installation, remain stable in use, and be manually pulled out when disassembly is required. This manual does not limit the specific form of this movable connection; other guide structures that allow lateral insertion and removal can also be used, depending on the spatial layout and assembly requirements, and are not limited thereto.

[0077] The first drive unit 21 has a first concave-convex structure at its end, and correspondingly, the mating end of the first mating part 321 has a matching second concave-convex structure. The first and second concave-convex structures can be interlocking polygonal contours, staggered bosses and grooves, etc., which can achieve circumferential fixation during axial insertion. When the roller support 31 slides laterally close to the drive motor 2, the first and second concave-convex structures automatically align and gradually insert until they are fully abutted, completing the axial mating and forming an anti-torsional fit in the circumferential direction. Thus, when the first drive unit 21 rotates, it drives the first mating part 321 to rotate synchronously, realizing power transmission.

[0078] By setting the roller bracket 31 to be slidably installed in the lateral direction and cooperating with the concave-convex meshing structure on the end face to achieve the transmission connection, when installing or replacing the roller assembly 3, the user only needs to push the roller bracket 31 into the mounting bracket 1 in the horizontal direction to simultaneously complete the establishment of mechanical positioning and power connection; when disassembling, pull it out in the opposite direction and the transmission connection will be automatically disconnected. This process does not require rotational alignment or additional locking operations. The transmission connection can be established simply by pushing it in in a straight line, which simplifies the operation steps and improves assembly efficiency.

[0079] Specifically, in order to achieve stable guidance and detachable connection between the roller bracket 31 and the mounting bracket 1, please refer to... Figure 5 , Figure 8 and Figure 9 In this embodiment, one of the mounting bracket 1 and the roller bracket 31 is provided with a slot a that extends laterally and penetrates the side, and the other is provided with a holding part b that slides with the slot a.

[0080] "One of the mounting bracket 1 and the roller bracket 31 is provided with a slot a that extends laterally and penetrates the side" means that the slot a completely penetrates the side of the roller bracket 31 or the mounting bracket 1, so that the holding part b can slide directly into the slot a from the side during assembly without vertical alignment or vertical insertion, thus making it convenient for the user to complete the installation with one hand.

[0081] The retaining part b can be located on the outer wall of the roller bracket 31 or on the mounting bracket 1, depending on the overall structural layout. When the roller bracket 31 is installed into the mounting bracket 1, the retaining part b slides along the extension direction of the slot a, guiding the roller bracket 31 to move smoothly to the predetermined position.

[0082] It should be noted that the cross-sectional shape of the slot a and the holding part b can be rectangular, T-shaped, dovetail-shaped, or arc-shaped, etc., to adapt to different guiding requirements and anti-disengagement requirements. This manual does not limit the specific number and distribution position of the slot a and the holding part b. One or more sets can be set, symmetrically or asymmetrically arranged, depending on the connection strength and stability requirements, and is not limited in this regard.

[0083] The cooperation between the slot a and the holding part b allows the roller bracket 31 to be smoothly pushed in or pulled out in the lateral direction, playing a guiding and limiting role, while maintaining the stability of the posture during the connection process and avoiding shaking or deviation.

[0084] Furthermore, to prevent stains and hair from easily adhering to the surface of the roller assembly 3 during cleaning, thus reducing cleaning efficiency and making cleaning inconvenient, please refer to... Figures 5 to 7 In this embodiment, the cleaning module further includes a wiper blade 5 and a dirt collection assembly 6. The wiper blade 5 is mounted on the roller bracket 31 and is used to scrape away dirt from the first roller 32 and the second roller 33 when the first roller 32 and the second roller 33 rotate. The dirt collection assembly 6 is used to collect the dirt scraped away by the wiper blade 5, and the dirt collection assembly 6 is detachably connected to the mounting bracket 1.

[0085] Understandably, the wiper blade 5 is mounted on the roller bracket 31, located below or to the side rear of the rotation path of the first roller 32 and the second roller 33, with the end of the wiper blade 5 in contact with the two rollers and in close contact with the outer circumferential surface of the rollers. When the first roller 32 and the second roller 33 rotate, the sewage, dust or fibrous impurities carried on their surfaces are scraped off as they pass by the wiper blade 5, thus cleaning the surface of the rollers.

[0086] The wiper blade 5 is arranged with an interference fit with the first roller 32 and the second roller 33, meaning that the blade edge of the wiper blade 5 applies slight pressure to the surface of the rollers to ensure effective wiping. The wiper blade 5 can be made of elastic materials such as rubber, silicone, or flexible plastic, or it can be made of a metal sheet with an elastic support structure. The specific material and structure can be selected according to actual needs, and this specification does not limit this aspect.

[0087] The sludge collection component 6 is located below or behind the scraper blade 5 to collect dirt and liquid scraped from the roller surface, preventing it from dripping onto the ground or contaminating other components. The sludge collection component 6 is detachably connected to the mounting bracket 1 via snap-fit, plug-in, sliding groove limiting, or magnetic attraction, allowing the user to periodically remove it for emptying, flushing, or replacement. This manual does not limit the specific shape and capacity of the sludge collection component 6; it can be box-shaped, trough-shaped, or have a filter screen 62. A sealing cap can also be configured to prevent odor emissions. The specific design can be tailored to actual sludge collection needs and is not limited in this regard.

[0088] By setting up a squeegee 5 that is linked to the roller bracket 31, dirt on the roller surface can be continuously removed during operation, and the dirt can be collected and stored together with the detachable dirt collection component 6, thereby reducing the impact of residual dirt on the subsequent cleaning effect. Since the squeegee 5 is fixed to the roller bracket 31, when the roller assembly 3 is removed from the mounting bracket 1, the squeegee 5 is removed along with the first roller 32 and the second roller 33; while the dirt collection component 6 is installed independently on the mounting bracket 1 and can be disassembled and washed separately, so that each easily soiled part can be maintained independently.

[0089] Specifically, please refer to Figures 6 to 7 In one embodiment, the sludge collection assembly 6 includes a bottom shell 61, a filter screen 62, and a limiting cover plate 63. The bottom shell 61 has a sewage tank 61a with its opening facing upwards, the sewage tank 61a being used to communicate with a sludge suction device. The filter screen 62 covers the opening of the sewage tank 61a. The limiting cover plate 63 is disposed above the filter screen 62 to press the filter screen 62 against the bottom shell 61.

[0090] Understandably, the bottom shell 61 is located at the bottommost point, and the wastewater tank 61a is used to temporarily store wastewater and impurities scraped off the surface of the roller. The bottom or side wall of the wastewater tank 61a has an interface that can be connected to an external suction device, such as a water pump or a negative pressure ventilation system, to continuously extract the liquid in the wastewater tank 61a and transport it to the collection tank.

[0091] The filter screen 62 covers the entire opening of the sewage tank 61a and is used to filter the incoming sewage, intercepting solid particles such as hair, dust clumps, and paper scraps to prevent them from entering the suction device and causing blockage. The filter screen 62 can be made of metal mesh, plastic grid, or perforated plate structure. Its pore size is designed according to the size of the impurities to be filtered. Multiple layers of filter media can also be configured to enhance the filtration effect. The specific form can be selected according to the actual working conditions and is not limited thereto.

[0092] A limiting cover 63 is positioned above the filter screen 62 and fixed to the bottom shell 61 to press the filter screen 62 firmly onto the bottom shell 61, preventing it from shifting or falling off during vibration or machine movement. More importantly, when the cleaning robot tilts, flips, or is disassembled for maintenance, the limiting cover 63 can seal the area of ​​the filter screen 62, preventing filtered particles from falling from the surface of the filter screen 62 or sliding into other parts of the machine, thus preventing scattering and secondary contamination.

[0093] By setting up a sludge collection assembly 6 with a filter screen 62 and a limiting cover 63, solid impurities in the wastewater are intercepted to avoid clogging the subsequent suction passage. At the same time, the limiting cover 63 limits and blocks the filter screen 62, thereby preventing the filtered material from falling out and entering the main structure when the machine posture changes.

[0094] Furthermore, to avoid the problem of cumbersome disassembly steps and difficulty in thoroughly rinsing the surface of the filter screen 62 during the cleaning process, please refer to... Figure 7 In this embodiment, both the limiting cover plate 63 and the filter screen 62 are rotatably mounted on the bottom shell 61 about a laterally extending rotation axis.

[0095] Because both the limiting cover 63 and the filter screen 62 are rotatably mounted on the bottom shell 61 via a pivot or hinge structure, and the pivot extends laterally, the limiting cover 63 and the filter screen 62 can rotate around this axis as the center of rotation. When cleaning is required, the user can first flip the limiting cover 63 upwards to release the pressure on the filter screen 62; then, the filter screen 62 can be flipped upwards again around the pivot, opening it and exposing the internal space of the sewage tank 61a. The entire opening action is similar to turning the pages of a book, with each component unfolding sequentially; the operation is intuitive and requires no tools.

[0096] By setting the limiting cover 63 and the filter screen 62 to be rotatable and openable, users can open each component layer by layer during maintenance, thereby making it easy to access the inner wall of the sewage tank 61a and the surface of the filter screen 62 to thoroughly clean the accumulated dirt; at the same time, it can also avoid the problem of parts being easily lost or damaged during traditional disassembly and assembly.

[0097] Furthermore, to prevent wastewater from accumulating or flowing back along the surface of the scraper blade 5 after it has removed dirt from the roller surface, please refer to [link to relevant documentation]. Figures 8 to 9 In this embodiment, the bottom of the wiper blade 5 is provided with a guide surface 51, which is inclined downward in a direction away from the first roller 32 and the second roller 33.

[0098] The guide surface 51 at the bottom of the wiper blade 5 is inclined downwards from the side near the first roller 32 and the second roller 33 away from that area, that is, the height gradually decreases from the starting end of wiping. This inclination angle relative to the horizontal plane can be set between 5 degrees and 45 degrees, so that the scraped sewage and dust mixture can slide naturally down the guide surface 51 under the action of gravity and flow smoothly into the dirt collection assembly 6 below, avoiding the accumulation of liquid on the surface or edge of the wiper blade 5.

[0099] It should be noted that the guide surface 51 can be a plane, an arc surface, or a multi-segment composite curved surface. The surface of the guide surface 51 is smoothed to reduce flow resistance. This specification does not limit the specific tilt angle and extension length of the guide surface 51, which can be adjusted according to the installation space, flow rate, and overall machine posture.

[0100] By setting a downward-sloping guide surface 51 at the bottom of the wiper blade 5, the liquid flow is guided by the geometry, so that the scraped sewage automatically flows to the collection area along the slope under the action of gravity, without the need for additional power or auxiliary diversion components, thereby preventing sewage backflow or splashing.

[0101] Please see Figure 4 and Figure 9 In this embodiment, the cleaning module further includes a water supply component 7 installed on the mounting bracket 1, with the water outlet of the water supply component 7 facing the roller bracket 31. The roller bracket 31 extends laterally and is provided with a plurality of water passage holes 31a, which are spaced apart laterally and located below the water outlet of the water supply component 7.

[0102] The water supply component 7 is installed on the mounting bracket 1, with its outlet facing the area where the roller bracket 31 is located, and is used to supply cleaning water or cleaning fluid to the surface of the roller.

[0103] The roller support 31 has multiple water passage holes 31a spaced laterally at the corresponding outlet positions, forming a multi-point water flow path. When the water supply assembly 7 is activated, water flows out from the outlet and falls onto the roller support 31, then permeates downwards through the water passage holes 31a to the surfaces of the first roller 32 and the second roller 33. Because the water passage holes 31a are laterally dispersed, the water flow is initially separated and diffused before entering the roller area, thus achieving a certain degree of water uniformity in the lateral direction.

[0104] The shape of the water passage holes 31a can be circular, strip-shaped, or polygonal. The hole diameter and spacing can be designed according to the actual water demand and the width of the drum. This manual does not limit the specific number and arrangement of the water passage holes 31a; these can be determined based on the overall machine parameters and are not limited in this regard.

[0105] By providing multiple water passage holes 31a arranged laterally at intervals on the roller support 31, the water flow output from the water supply component 7 can cover a wider roller area after being diverted, thereby reducing local water shortage.

[0106] Furthermore, to improve the water distribution effect, please refer to [link / reference needed]. Figure 9 In this embodiment, the roller assembly 3 further includes a water distribution strip 34 installed on the roller bracket 31. The water distribution strip 34 is used to spread the cleaning water flowing out of the outlet of the water supply assembly 7 in a horizontal direction so that the cleaning water can be evenly distributed on the first roller 32 and the second roller 33.

[0107] Thus, when cleaning water flows out of the outlet and falls on the surface of the water distribution strip 34, the water flow is guided to spread out to both sides in the lateral direction, forming a uniform water film or fine stream, and then penetrates downward to the outer peripheral surfaces of the first roller 32 and the second roller 33.

[0108] It should be noted that the position of the water distribution strip 34 can be adjusted according to the outlet landing point to ensure that it can receive all or most of the outflow.

[0109] The water distribution strip 34 can be made of plastic, rubber, or metal, and its cross-sectional shape can be V-shaped, U-shaped, or arc-shaped, with the specific shape preferred based on the water flow diffusion effect. This specification does not limit the specific structural form of the water distribution strip 34, nor does it limit whether it is integrally formed with the roller support 31 or adopts a detachable connection method; such limitations are not imposed.

[0110] By setting up a water distribution strip 34 that extends laterally to receive the clean water output from the water supply component 7 and spread it along the length of the roller, the water volume is distributed in the width direction through physical flow guidance, so that the water flow can be more evenly distributed to the surface of the first roller 32 and the second roller 33, improving the wettability and avoiding local dry areas or water accumulation.

[0111] Furthermore, to avoid water flowing laterally along the inner wall of the mounting bracket 1 during the water supply process, resulting in water waste and uneven wetting, please refer to [further details needed]. Figure 9 In this embodiment, the water distribution strip 34 has a first water distribution part 341 that extends laterally. The first water distribution part 341 extends from the outer wall surface of the roller bracket 31 toward the inner wall surface of the mounting bracket 1 and is interference-fitted with the mounting bracket 1. The first water distribution part 341 is located below the outlet of the water supply component 7 and the plurality of water passage holes 31a to receive the cleaning water flowing out of the outlet of the water supply component 7 and spread the cleaning water to the plurality of water passage holes 31a.

[0112] The free end of the first water distribution part 341 is connected to the corresponding inner wall surface of the mounting bracket 1 by an interference fit. That is, in the assembled state, the end of the first water distribution part 341 is tightly attached to or pressed into the inner wall of the mounting bracket 1 to form a sealed or near-sealed fit, so as to prevent water from flowing down the side wall of the mounting bracket 1.

[0113] The first water distribution section 341 is located directly below the water outlet of the water supply component 7 and covers the upstream area of ​​multiple water passage holes 31a. When cleaning water flows out of the water outlet, it first falls into the guide cavity formed by the first water distribution section 341. Under the action of gravity and surface tension, the water flow spreads laterally and then is evenly guided downward into each water passage hole 31a to achieve continuous wetting of the roller area.

[0114] By setting the first water distribution part 341 with an interference fit connection, not only can the water distribution strip 34 be stably installed, but also an effective seal can be formed between the water distribution strip 34 and the mounting bracket 1 to prevent cleaning water from flowing laterally along the inner wall of the mounting bracket 1.

[0115] Based on the existing water supply distribution structure, in order to further optimize the transition and guidance process of water flow from the water passage 31a to the roller surface, and to solve the problems of splashing or local concentration that may occur when water flows down through the holes, please refer to [further details needed]. Figure 9 In this embodiment, the water distribution strip 34 has a second water distribution section 342 that extends laterally. The second water distribution section 342 extends from the inner wall surface of the roller support 31 toward the outer wall surface of the first roller 32 and the second roller 33, and is interference-fitted with the first roller 32 and the second roller 33. The second water distribution section 342 is located below the plurality of water passage holes 31a to receive the cleaning water flowing out of the plurality of water passage holes 31a, and spread the cleaning water and guide it to the outer wall surface of the first roller 32 and the second roller 33.

[0116] The end of the second water distribution section 342 is in contact with or slightly interference-fitted with the outer wall surfaces of the first roller 32 and the second roller 33. That is, in its natural state, the second water distribution section 342 applies a certain elastic pressure to the roller surface to form a close fit. When the rollers rotate, this contact area can slide accordingly without affecting normal rotation.

[0117] The second water distribution section 342 is located directly below the plurality of water passage holes 31a and is used to receive cleaning water falling vertically from the water passage holes 31a. After the water flows into the guide groove or guide surface formed by the second water distribution section 342, it spreads out laterally to form a uniformly distributed water film or fine stream, and then transfers the water to the outer periphery of the roller through direct contact with the roller surface, thereby achieving wetting.

[0118] By providing a second water distribution section 342 that is interference-fitted with the surface of the roller, the cleaning water flowing out from the water passage 31a is received and spread out laterally before being evenly introduced into the outer wall surfaces of the first roller 32 and the second roller 33, thereby reducing water splashing and local water accumulation.

[0119] The specific structural forms of the linear drive mechanism 4, the first roller 32, and the second roller 33 are described below.

[0120] Specifically, to achieve the transmission of the rotational motion of the first roller 32 to the lateral movement of the second roller 33, and to simplify the transmission structure to reduce assembly complexity, please refer to [link to relevant documentation]. Figure 10In this embodiment, the linear drive structure includes a second drive part 41 disposed on the first roller 32 and a second mating part 42 disposed on the second roller 33. One of the second drive part 41 and the second mating part 42 is provided with an external thread, and the other is provided with an internal thread that mates with the external thread.

[0121] Understandably, the second drive portion 41 of the first roller 32 and the second mating portion 42 of the second roller 33 form a helical drive pair through a threaded connection. For example, a shaft section with external threads can extend from the end of the first roller 32 as the second drive portion 41, while a connecting sleeve with internal threads can be provided at the mounting end of the second roller 33 as the second mating portion 42; or conversely, the first roller 32 can have an internal thread structure, and the second roller 33 can have an external thread structure. When the first roller 32 rotates, the screwing action between the threads drives the second roller 33 to generate a linear displacement in the lateral direction, so that the second roller 33 moves away from the first roller 32 and protrudes outside the mounting bracket 1, thereby enabling cleaning of the wall-side area.

[0122] It should be noted that the lead of the threaded fit can be adaptively designed according to the actual required expansion speed and stroke. The thread type used can be a general thread, a trapezoidal thread, or a ball screw structure, etc. The specific selection is determined based on factors such as transmission smoothness, efficiency and manufacturing cost.

[0123] Furthermore, to ensure the stability of the second roller 33 during movement, the threaded transmission structure can be equipped with guiding components, such as guide rods, slide rails, or groove structures, to limit the rotational freedom of the second roller 33, ensuring that it only moves linearly in the lateral direction. Additionally, when the first roller 32 rotates in the opposite direction or stops driving, an elastic reset component, such as a compression spring, tension spring, or torsion spring, can be provided in the retraction direction of the second roller 33 to achieve an automatic reset function. The above structural configurations are all technical solutions achievable in the embodiments of this specification. Specific implementation methods can be flexibly adjusted according to product layout and usage requirements, and this specification does not limit these aspects.

[0124] By setting meshing internal and external threads between the second drive part 41 and the second mating part 42, the rotational motion of the first roller 32 is converted into the linear outward expansion motion of the second roller 33 by using a helical pair, so as to achieve extended cleaning of the wall edge area. There is no need to add an independent drive unit or a complex linkage mechanism. The structure is compact and the transmission is reliable, which facilitates assembly and subsequent maintenance.

[0125] Specifically, please refer to Figures 10 to 11In this embodiment, the second roller 33 has a threaded hole 33a at one end facing the first roller 32. The second drive part 41 extends laterally, with one end connected to one end of the first roller 32 and the other end having the external thread. The other end of the second drive part 41 extends into the threaded hole 33a to engage with the threaded hole 33a.

[0126] Thus, when the first roller 32 rotates, the second roller 33 is pushed to move laterally outward by the synchronous rotation of the second drive unit 41 and the screwing action between the threads, so that the second roller 33 produces a linear stroke away from the first roller 32, thereby protruding beyond the mounting bracket 1 to clean the wall area.

[0127] It should be noted that the connection between the second drive unit 41 and the first roller 32 can be an interference fit, a key connection, welding, or integral molding, as long as the torque can be transmitted between the two.

[0128] By directly setting the second drive unit 41 at the end of the first roller 32 and extending it into the threaded hole 33a of the second roller 33 to form a threaded engagement, the direct conversion from rotation to linear motion is achieved. The overall structure is compact and the transmission path is short, thereby stably driving the second roller 33 to expand laterally.

[0129] Furthermore, to prevent the second roller 33 from overextending or falling out of the preset stroke range due to continuous rotation during the drive process, please refer to... Figures 10 to 11 In this embodiment, the linear drive structure further includes a stop part 43, which is used to limit and stop the second roller 33 at the outer limit position during the outward expansion stroke of the second roller 33.

[0130] It should be noted that the stop part 43 can be set on the mounting bracket 1, the roller bracket 31 or the fixing structure of the cleaning module, or it can be integrated into the second roller 33 itself or the transmission component that cooperates with it.

[0131] For example, a protrusion, step, or limiting block is provided at the end of the moving path of the second roller 33, or a stop, slot a, or other structure is provided at the corresponding position on the bracket. When the second roller 33 moves to the predetermined position, its moving end contacts the stop part 43, thereby terminating further outward movement.

[0132] The stop part 43 can be implemented as an elastic element, a limiting block, a convex-concave mating structure, or through threaded self-locking; the specific form is not limited. This specification does not limit the specific implementation of the stop part 43; it can be an independently assembled metal or plastic part, or it can be a structure integrally formed with the bracket, as long as it can form a blockage at the end of the outward expansion stroke. In addition, the position of the stop part 43 can be adaptively adjusted according to the actual cleaning space and the distance from the wall.

[0133] By setting a stop part 43 to limit the outward extension stroke of the second roller 33, the second roller 33 is limited when it reaches the maximum extension position, preventing structural interference or damage caused by over-travel, thereby enabling it to maintain a stable edge-to-edge state for cleaning when close to the wall.

[0134] For details, please continue reading Figures 10 to 11 In this embodiment, the second drive unit 41 includes a drive shaft 411 and a rotor 412. The drive shaft 411 extends laterally, with one end connected to the first roller 32 and the other end connected to the rotor 412, which has an external thread. The second roller 33 has a threaded hole 33a at one end facing the first roller 32, and a stop 43 is provided in the threaded hole 33a. The stop 43 is located on the side of the rotor 412 closer to the first roller 32, so that when the second roller 33 moves away from the first roller 32, the stop 43 engages with the rotor 412 to limit the second roller 33 to the outer limit position.

[0135] Thus, the external thread and the threaded hole 33a at the end of the second roller 33 form a helical engagement. When the drive shaft 411 rotates, the external thread on the rotor 412 engages with the threaded hole 33a, pushing the second roller 33 to move laterally outward.

[0136] The threaded hole 33a is not only used for transmission, but also has a stop 43 inside. The stop 43 is located on the side of the rotor 412 close to the first roller 32. That is, when the first roller 32 rotates, the second roller 33 is driven to move laterally away from the first roller 32 through the threaded transmission. At this time, the rotor 412 gradually withdraws from the threaded hole 33a. When the second roller 33 moves to the outer limit position, the rotor 412 abuts against the stop 43 in the threaded hole 33a to limit its continued outward movement, thereby achieving reliable positioning of the end point of the stroke.

[0137] By setting a stop 43 in the threaded hole 33a of the second roller 33 and cooperating with the rotor 412 of the second drive unit 41, axial contact and limiting are achieved when the second roller 33 expands to the limit position, so that the transmission function and the limiting function are integrated into one, the structure is compact, and no additional independent limiting structure is required. While ensuring the stroke is controllable, the overall layout can also be simplified.

[0138] Specifically, please refer to Figure 11 In this embodiment, the stop portion 43 is arranged in a ring shape and is arranged around the periphery of the drive shaft 411.

[0139] Understandably, the inner diameter of the annular stop 43 is smaller than the maximum diameter of the external thread on the rotor 412 or the outer diameter of the root step of the rotor 412, so as to form an axial limiting surface. When the second roller 33 moves relative to the drive shaft 411 during the outward expansion stroke, the rotor 412 gradually unscrews from the threaded hole 33a in the transverse direction; when it reaches the outer limit position, the root end face or shoulder structure of the rotor 412 abuts against the annular stop 43, thereby preventing the second roller 33 from continuing to move outward.

[0140] This specification does not limit the specific material and cross-sectional shape of the stop part 43. It can be made of metal, plastic, or composite materials, and the cross-section can be rectangular, L-shaped, C-shaped, or other adaptable structures. In addition, the position of the annular stop part 43 is adjustable along the axial direction and can be adaptively arranged according to the required outward stroke.

[0141] By setting the stop part 43 as an annular shape and surrounding the drive shaft 411, the limiting structure is arranged coaxially with the transmission path, making compact use of space and balancing the force, thereby achieving stable axial blocking when the second roller 33 expands to its limit position.

[0142] Furthermore, to prevent the stop part 43 from loosening or axially displacing during use, please refer to [further details needed]. Figure 11 In this embodiment, the outer peripheral wall of the stop portion 43 is provided with external threads to be screwed into the threaded hole 33a.

[0143] Thus, through the threaded connection, the stop part 43 can be installed and fixed inside the threaded hole 33a by screwing it in, so that the stop part 43 can be positioned in a preset position, ensuring that it is always at the preset limit point during the outward expansion stroke of the second roller 33, preventing it from falling off or shifting due to vibration or reverse force.

[0144] Specifically, please refer to Figures 10 to 11In this embodiment, the linear drive structure further includes a connecting bracket 44, a first bearing 45, and a second bearing 46. The connecting bracket 44 is fixedly connected to the roller bracket 31 and located between the first roller 32 and the second roller 33. The connecting bracket 44 has a first side and a second side that are arranged opposite each other in the transverse direction. The first side faces the first roller 32, and the second side faces the second roller 33. The first bearing 45 is connected between the end of the first roller 32 and the first side, so that the first roller 32 is rotatably mounted on the connecting bracket 44. The second bearing 46 is connected between the end of the second roller 33 and the second side, so that the second roller 33 is rotatably mounted on the connecting bracket 44.

[0145] Specifically, the connecting bracket 44 is fixedly connected to the roller bracket 31 and located between the first roller 32 and the second roller 33. The connecting bracket 44 serves as a common mounting reference for both rollers. The connecting bracket 44 enables centralized positioning and force transmission, ensuring precise alignment of the first roller 32 and the second roller 33. This reduces frame deformation or assembly deviations, minimizing interference with the movement of subsequent moving parts.

[0146] The first bearing 45 is located between the end of the first roller 32 and the first side of the connecting bracket 44, and is used to support the first roller 32 and allow it to rotate freely about the transverse axis.

[0147] The second bearing 46 is located between the end of the second roller 33 and the second side of the connecting bracket 44, and is used to support the second roller 33 so that it can rotate around its own axis and move laterally along the guide path.

[0148] By setting the connecting bracket 44 as a common installation base, and setting the first bearing 45 and the second bearing 46 on both sides respectively, the first roller 32 and the second roller 33 can be provided with relatively stable rotational support and maintain a stable relative position. This enables smooth rotation during cleaning operations, reduces motion resistance, and avoids rotational obstruction or jamming caused by uneven load or assembly deviation.

[0149] Furthermore, to improve the coaxiality and overall assembly accuracy between the second drive unit 41 and the support structure, and to reduce eccentricity or wobbling during transmission, please refer to... Figure 11In this embodiment, the linear drive structure further includes a second drive portion 41 extending laterally. One end of the second drive portion 41 is fixedly connected to the first roller 32, and the other end is threadedly engaged with the second roller 33. The connecting bracket 44 is annular and sleeved around the periphery of the second drive portion 41. The bearing seat of the first bearing 45 is fixedly connected to the first roller 32, and the inner ring of the first bearing 45 is fixedly connected to the connecting bracket 44. The bearing seat of the second bearing 46 is fixedly connected to the connecting bracket 44, and the inner ring of the second bearing 46 is fixedly connected to the second roller 33.

[0150] The second drive unit 41 is a transversely extending shaft-like structure, with one end fixed to the first roller 32 and the other end connected to the second roller 33 via a threaded connection to achieve motion transmission. The connecting bracket 44 is configured as a ring structure, sleeved around the second drive unit 41, which can form a circumferential covering and radial positioning of the second drive unit 41. The ring structure is a symmetrical structure, which can improve the alignment accuracy of the installation positions on both sides and enhance the overall rigidity.

[0151] The bearing housing of the first bearing 45 is fixed to the first roller 32, and the inner ring is fixed to the connecting bracket 44. This allows the outer ring of the bearing to rotate when the first roller 32 rotates, while the inner ring remains relatively stationary with the connecting bracket 44. The bearing housing of the second bearing 46 is fixed to the connecting bracket 44, and the inner ring is fixed to the second roller 33. When the second roller 33 rotates and moves laterally, its inner ring rotates and slides synchronously with the second roller 33, while the bearing housing is supported and kept stationary by the connecting bracket 44. This arrangement ensures independent movement of the two rollers while achieving unified spatial positioning through the shared annular connecting bracket 44.

[0152] By setting the connecting bracket 44 as an annular structure surrounding the second drive unit 41 and using bearings that are fixed to the inner and outer rings respectively, the first roller 32 and the second roller 33 can obtain stable support during rotation and linear motion, reducing vibration caused by eccentricity or loosening.

[0153] Specifically, in this embodiment, the cleaning module further includes an electronic control device (not shown), a drive motor 2 mounted on the mounting bracket 1, and a first drive unit 21 coaxially connected to the first roller 32 to drive the first roller 32 to rotate. The electronic control device is electrically connected to the drive motor 2 and is used to control the operation of the drive motor 2 so that the first drive unit 21 can drive the first roller 32 to rotate forward and backward.

[0154] The drive motor 2 is mounted on the mounting bracket 1 and is coaxially connected through a connecting structure. When the drive motor 2 is working, it transmits power to the first roller 32 through the first drive unit 21, causing it to rotate around its own axis, thereby performing the floor cleaning task and simultaneously serving as the power source for the linear drive structure.

[0155] The electronic control device is electrically connected to the drive motor 2 and is used to send control signals to the drive motor 2 to adjust the start / stop, speed, and direction of rotation of the drive motor 2. The electronic control device controls the output shaft to drive the first roller 32 to rotate in the forward direction, so as to push the second roller 33 to expand outward and move closer to the wall for cleaning; when it is necessary to retract the second roller 33, the first roller 32 is controlled to rotate in the reverse direction, so that the second roller 33 moves in the opposite direction and retracts to the initial position.

[0156] By setting a drive motor 2 coaxially connected to the first roller 32 and cooperating with an electronic control device that can control forward and reverse rotation, the first roller 32 can rotate continuously during normal cleaning operations to complete the floor cleaning function. At the same time, the rotation direction can be switched according to the actual working conditions, thereby driving the second roller 33 to achieve reciprocating motion of extending outward and retracting inward through the linear drive structure, thus adapting to the cleaning needs of the wall area.

[0157] The present invention also proposes a cleaning robot, which includes a body and a cleaning module. The specific structure of the cleaning module is as described in the above embodiments. Since the cleaning robot adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0158] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A cleaning module, characterized in that, include: Mounting bracket (1); A drive motor (2) is fixedly mounted on the mounting bracket (1). The drive motor (2) has a first drive part (21) extending laterally, and the first drive part (21) is rotatable about its axis. A roller assembly (3), located at one lateral end of the drive motor (2), includes a roller bracket (31) detachably mounted on the mounting bracket (1), a first roller (32), and a second roller (33). The first roller (32) and the second roller (33) both extend laterally and are spaced apart laterally. The first roller (32) and the second roller (33) are rotatably mounted on the bottom of the roller bracket (31) about their own axes. The second roller (33) is also slidably mounted on the roller bracket (31) along its axial direction to move away from or towards the first roller (32). A linear drive mechanism (4) is provided between the first roller (32) and the second roller (33) for converting the rotational stroke of the first roller (32) into the axial movement stroke of the second roller (33); The first roller (32) has a first mating part (321) at one end facing the drive motor (2), and the first mating part (321) is detachably connected to the first drive part (21) so that the first roller (32) is driven to rotate.

2. The cleaning module as described in claim 1, characterized in that, The roller bracket (31) is detachably connected to the mounting bracket (1) in the transverse direction. The first driving part (21) and the first mating part (321) are respectively provided with a first concave-convex structure and a second concave-convex structure at their respective ends. When the roller assembly (3) is transversely close to the driving motor (2), the first tooth and the second tooth are abutted against each other in the axial and circumferential directions so as to drive the first mating part (321) to rotate synchronously when the first driving part (21) rotates.

3. The cleaning module as described in claim 2, characterized in that, One of the mounting bracket (1) and the roller bracket (31) is provided with a slot (a) that extends laterally and penetrates the side, and the other is provided with a retaining part (b) that slides with the slot (a).

4. The cleaning module as described in claim 1, characterized in that, The cleaning module also includes: A squeegee (5), mounted on the roller bracket (31), is used to scrape away dirt from the first roller (32) and the second roller (33) when the first roller (32) and the second roller (33) rotate; and, The dirt collection component (6) is used to collect the dirt scraped off by the wiper blade (5), and the dirt collection component (6) is detachably connected to the mounting bracket (1).

5. The cleaning module as described in claim 4, characterized in that, The sludge collection component (6) includes: The bottom shell (61) has a sewage tank (61a) with the slot facing upward, the sewage tank (61a) being used to communicate with a sewage suction device; A filter screen (62) is provided over the opening of the wastewater tank (61a); and, A limiting cover (63) is provided above the filter screen (62) to press the filter screen (62) against the bottom shell (61).

6. The cleaning module as described in claim 5, characterized in that, The limiting cover (63) and the filter screen (62) are both rotatably mounted on the bottom shell (61) about a laterally extending rotation axis.

7. The cleaning module as described in claim 4, characterized in that, The bottom of the wiper blade (5) is provided with a guide surface (51), which is inclined downward in a direction away from the first roller (32) and the second roller (33).

8. The cleaning module as described in claim 1, characterized in that, The cleaning module also includes a water supply component (7) installed on the mounting bracket (1), with the water outlet of the water supply component (7) facing the roller bracket (31); The roller support (31) extends laterally and has multiple water passage holes (31a) arranged at intervals in the lateral direction and located below the outlet of the water supply component (7).

9. The cleaning module as described in claim 8, characterized in that, The roller assembly (3) also includes a water distribution strip (34) installed on the roller bracket (31). The water distribution strip (34) is used to spread the cleaning water flowing out of the outlet of the water supply assembly (7) in a horizontal direction so that the cleaning water can be evenly distributed in the first roller (32) and the second roller (33).

10. The cleaning module as described in claim 9, characterized in that, The water distribution strip (34) has a first water distribution section (341) extending laterally. The first water distribution section (341) extends from the outer wall of the roller bracket (31) toward the inner wall of the mounting bracket (1) and is interference-fitted with the mounting bracket (1). The first water distribution section (341) is located below the outlet of the water supply component (7) and the plurality of water passage holes (31a) to receive the cleaning water flowing out of the outlet of the water supply component (7) and spread the cleaning water to the plurality of water passage holes (31a).

11. The cleaning module as described in claim 9, characterized in that, The water distribution strip (34) has a second water distribution section (342) extending laterally. The second water distribution section (342) extends from the inner wall of the roller support (31) toward the outer wall of the first roller (32) and the second roller (33) and is interference-fitted with the first roller (32) and the second roller (33). The second water distribution section (342) is located below the plurality of water passage holes (31a) to receive the cleaning water flowing out of the plurality of water passage holes (31a) and spread the cleaning water to the outer wall of the first roller (32) and the second roller (33).

12. The cleaning module as described in claim 1, characterized in that, The linear drive structure includes a second drive part (41) disposed on the first roller (32) and a second mating part (42) disposed on the second roller (33). One of the second drive part (41) and the second mating part (42) is provided with an external thread, and the other is provided with an internal thread that mates with the external thread.

13. The cleaning module as described in claim 12, characterized in that, The second roller (33) has a threaded hole (33a) at one end facing the first roller (32); The second drive unit (41) extends laterally. One end of the second drive unit (41) is connected to one end of the first roller (32), and the other end is provided with the external thread. The other end of the second drive unit (41) extends into the threaded hole (33a) to engage with the threaded hole (33a).

14. The cleaning module as described in claim 12, characterized in that, The linear drive structure further includes a stop (43), which is used to limit and stop the second roller (33) at the outer limit position during the outward movement of the second roller (33).

15. The cleaning module as described in claim 14, characterized in that, The second drive unit (41) includes a drive shaft (411) and a rotor (412). The drive shaft (411) extends laterally. One end of the drive shaft (411) is connected to the first roller (32), and the other end is provided with the rotor (412). The rotor (412) is provided with an external thread. The second roller (33) is provided with a threaded hole (33a) at one end facing the first roller (32). The stop part (43) is provided in the threaded hole (33a). The stop part (43) is located on the side of the rotor (412) close to the first roller (32). When the second roller (33) moves in a direction away from the first roller (32), the stop part (43) cooperates with the rotor (412) to limit the second roller (33) to the outer limit position.

16. The cleaning module as described in claim 15, characterized in that, The stop (43) is arranged in a ring shape and is located around the periphery of the drive shaft (411); and / or The outer peripheral wall of the stop part (43) is provided with external threads to be screwed into the threaded hole (33a).

17. The cleaning module as described in claim 1, characterized in that, The linear drive structure also includes: A connecting bracket (44) is fixedly connected to the roller bracket (31) and located between the first roller (32) and the second roller (33). The connecting bracket (44) has a first side and a second side that are arranged opposite to each other in the lateral direction. The first side faces the first roller (32) and the second side faces the second roller (33). A first bearing (45) is connected between the end of the first roller (32) and the first side, such that the first roller (32) is rotatably mounted on the connecting bracket (44); and, A second bearing (46) is connected between the end of the second roller (33) and the second side, so that the second roller (33) is rotatably mounted on the connecting bracket (44).

18. The cleaning module as described in claim 17, characterized in that, The linear drive structure also includes a second drive part (41) extending laterally, one end of the second drive part (41) being fixedly connected to the first roller (32), and the other end being threadedly engaged with the second roller (33); The connecting bracket (44) is configured as a ring and is sleeved on the periphery of the second driving part (41). The bearing seat of the first bearing (45) is fixedly connected to the first roller (32), and the inner ring of the first bearing (45) is fixedly connected to the connecting bracket (44). The bearing seat of the second bearing (46) is fixedly connected to the connecting bracket (44), and the inner ring of the second bearing (46) is fixedly connected to the second roller (33).

19. The cleaning module as described in claim 1, characterized in that, The cleaning module also includes an electronic control device, which is electrically connected to the drive motor (2) and is used to control the operation of the drive motor (2) so that the first roller (32) rotates forward and backward.

20. A cleaning robot, characterized in that, Includes the cleaning module as described in any one of claims 1 to 19.

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