Cleaning device for cleaning water tank

Abstract

The invention relates to a cleaning device for cleaning a water tank. The cleaning device comprises a base; the cleaning cloth mounting frame is mounted at the bottom of the base; the annular cleaning cloth is wound between the driving roller and the driven roller of the cleaning cloth mounting frame and can be driven by the driving roller to circularly rotate; the base is further provided with a scraping strip assembly used for scraping garbage and sewage on the annular cleaning cloth and a water adding device used for adding water to the annular cleaning cloth. When the driving roller drives the annular cleaning cloth to rotate circularly, the cleaning cloth part attached with stains can move to the position of the scraping strip assembly just after the wall of the water tank is scrubbed. The scraping strip assembly can physically scrape away stubborn oil stains, solid garbage and sewage adhering to the cleaning cloth. Meanwhile, the water adding device sprays or adds water flow to the cleaning cloth before scraping or in the scraping process, and the functions of washing and softening stains are achieved. Scraping and washing synergistically act, and dirt on the cleaning cloth is effectively stripped and removed.

Description

Technical Field

[0001] This invention relates to the field of sink cleaning technology, and more particularly to a cleaning device for cleaning sinks. Background Technology

[0002] Sinks are prone to accumulating stubborn stains such as grease and limescale during daily use. Current cleaning methods mainly rely on manual scrubbing or soaking in water. Manual cleaning is inefficient and struggles to thoroughly remove residue from the sink walls, especially in deep sinks and corner areas. Soaking consumes a large amount of water and requires secondary cleaning afterward, failing to provide immediate cleaning. While some products use chemical cleaners, there is a risk of corrosion to the sink surface and water contamination. In recent years, although some self-cleaning technologies have emerged, they are mostly limited to localized cleaning of the drain or simple spray systems, lacking proactive cleaning solutions for the sink walls. Neither drain cleaners nor simple sprays can simulate the key action of manual scrubbing—applying physical pressure and friction. There are also cleaning devices with attached cloths to clean the sink walls, but how to achieve self-cleaning of the cloths after the cleaning process remains a pressing technical problem for these devices.

[0003] It is understood that the above statements only provide background information related to the present invention and do not necessarily constitute prior art. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a cleaning device for cleaning sinks that can effectively clean rags, in light of the current state of the technology.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problem is: a cleaning device for cleaning sinks, comprising:

[0006] Base;

[0007] A cloth mounting bracket is installed at the bottom of the base. The cloth mounting bracket has a drive roller that can be driven to rotate by a drive mechanism and a driven roller that can rotate freely on two opposite sides.

[0008] A ring-shaped rag is wound around the active roller and the driven roller of the rag mounting frame and can be driven by the active roller to rotate in a cycle.

[0009] The base is also equipped with a scraper assembly for scraping off garbage and sewage from the circular rag and a water-adding device for adding water to the circular rag.

[0010] Considering that improper distribution of the scraping and water-addition points could lead to secondary contamination of the scraper by wastewater or inefficient rinsing of the scraper, the scraper assembly operates at the top of the annular cloth. The water-addition device is also located at the top of the annular cloth, following the direction of rotation of the cloth, and is positioned behind the scraper assembly. Both the scraper assembly and the water-addition device operate at the top of the cloth, forming a continuous "scraping → water-addition" process. The water-addition point is located behind the scraper (along the direction of cloth rotation) to ensure that the cloth is moistened only after scraping away the scraper, preventing wastewater from carrying the scraper back into the cloth.

[0011] Considering that a single scraper cannot efficiently remove both solid waste and wastewater simultaneously, and that solid particles may clog the scraper structure, the scraper assembly includes a first scraper and a squeegee. The first scraper acts on the surface of the annular cloth, scraping away waste material as the cloth rotates. The squeegee acts on the surface of the annular cloth, scraping away wastewater as it rotates. The squeegee is positioned in front of the first scraper, along the direction of rotation of the cloth. The first scraper prioritizes removing solid waste, preventing clogging of the squeegee. The squeegee then follows to remove wastewater, achieving "solid-liquid separation cleaning" and improving scraping efficiency. After the wastewater is removed, it also facilitates the application of clean water to the annular cloth by a water-adding device.

[0012] The aforementioned "waste materials" refer to various solid or semi-solid substances that need to be removed during the cleaning of the sink, which are absorbed or carried by the rag. Examples include food scraps, rice grains, vegetable leaves, tea leaves, hair, particulate matter, and clumps of dirt.

[0013] The aforementioned "wastewater" can be understood as liquid that needs to be removed, absorbed or carried by the rag during the sink cleaning process. It is usually a mixture of detergent, grease, dissolved dirt, etc. For example, dirty water containing dish soap foam, oily wastewater, etc.

[0014] Considering that the areas where the bottom and side walls of the sink meet (L-shaped dead corners) and the side walls themselves (especially the upper part and corners) are the most prone to dirt accumulation, existing self-cleaning structures cannot effectively reach these areas (due to structural limitations) nor provide sufficient cleaning power. Simple spray water cannot reach or stay in these dead corners, while local cleaning devices cannot cover them completely. Therefore, as an improvement, the base includes a fixed frame and a movable frame rotatably connected to the fixed frame. The cloth mounting frame includes a first mounting frame and a second mounting frame that can rotate relative to each other about a first axis extending left and right. The first mounting frame is fixed relative to the fixed frame and has the active roller on the side away from the second mounting frame. The second mounting frame has the driven roller on the side away from the first mounting frame. The extending directions of the active roller and the driven roller are parallel to the first axis.

[0015] The second mounting bracket, as it rotates relative to the first mounting bracket, allows the cloth mounting bracket to have at least a flat state and a folded state:

[0016] In the flat state, the first mounting bracket and the second mounting bracket are unfolded relative to each other, and the bottom side of the annular cloth mounted on the cloth mounting bracket serves as the cleaning surface;

[0017] In the folded state, the first mounting bracket and the second mounting bracket are closed relative to each other, so that the cloth mounting bracket is L-shaped as a whole, and the annular cloth wrapped around the cloth mounting bracket has a horizontal cleaning surface at the bottom and a vertical cleaning surface at the side.

[0018] The second mounting bracket is detachably mounted on the movable bracket. The axis of rotation of the movable bracket relative to the fixed bracket is on the same straight line as the first axis. All the scraper assemblies are mounted on the movable bracket, and the water filling device is mounted on the fixed bracket.

[0019] The aforementioned "flat state" can be understood as the first and second mounting brackets of the cloth mounting rack being unfolded relative to each other, so that the entire cloth mounting rack is basically a plane (or has a small curvature). The main effective cleaning area of ​​the ring-shaped cloth is located on a relatively continuous plane at the bottom of the device, which is suitable for cleaning flat areas such as the bottom of the sink.

[0020] The aforementioned "folded state" can be understood as the first and second mounting brackets of the cloth mounting rack rotating and folding together (usually close to 90 degrees), making the entire cloth mounting rack L-shaped (or approximately right-angled). At this time, the circular cloth forms a horizontal (or nearly horizontal) cleaning surface at the bottom of the device, while simultaneously forming a vertical (or nearly vertical) cleaning surface on one side of the device (usually the front or outer side), suitable for cleaning the bottom of the sink and vertical sidewalls or corners at the same time.

[0021] Because the mounting bracket of the cleaning device and the ring-shaped cloth fitted on the bracket can form an L-shaped fold, the cloth simultaneously creates a horizontal and vertical cleaning surface. The horizontal surface precisely conforms to the bottom wall of the sink, while the vertical surface completely covers the side walls (including the upper part and corner areas). In its folded state, the cloth naturally wraps around the L-shaped junction of the bottom and side walls, its flexible material tightly conforming to the contours of this hard-to-reach area, effectively solving the problem that existing technologies cannot reach this heavily soiled area. During use, the active roller drives the ring-shaped cloth to rotate, causing the cloth fibers to continuously scrape and rub against the sink wall surface. This directly simulates the core actions of manual scrubbing (applying pressure and friction), and its removal power for stubborn oil stains and limescale far surpasses that of simple water jets or soaking, overcoming the shortcomings of insufficient spray cleaning power. Furthermore, the cleaning device efficiently cleans large areas of the bottom wall when laid flat; switching to the folded state seamlessly transforms it into a "three-dimensional" cleaning mode that simultaneously cleans the bottom wall, side walls, and junctions. A single device and a single operation can thoroughly clean all key inner surfaces of the sink, eliminating the need for manual secondary treatment or combining multiple spot cleaners, significantly improving cleaning efficiency and thoroughness. Compared to existing soaking cleaning technologies, it greatly saves water resources and eliminates the need for extensive rinsing after cleaning, achieving an "instant" cleaning effect.

[0022] To more rationally position the first scraper and squeegee, the movable frame includes a frame body and left and right support arms arranged on the frame body. The two support arms are rotatably connected to the fixed frame. The frame body includes a frame plate located above the top front side of the annular cloth, and the first scraper and squeegee are both located at the bottom of the frame plate. The support arm structure of the movable frame provides a stable rotatable connection. The frame plate provides a direct, reliable, and precisely positioned mounting platform for the scraper and squeegee, thereby effectively acting on the top front area of ​​the annular cloth below.

[0023] Considering that continuous water addition can easily lead to an overly wet cloth, affecting the cleaning effect and wasting water resources, the water addition device includes a water storage tank, a flexible water outlet pipe, and a control valve assembly that intermittently acts on the flexible water outlet pipe to open and close it. The water storage tank is located above the rear portion of the annular cloth. The inlet of the flexible water outlet pipe is connected to the water storage tank, and the outlet faces the annular cloth. The water storage tank is positioned at a high rear position, utilizing gravity for water supply, simplifying the piping layout. The intermittent control valve allows for on-demand water addition, precisely controlling the cloth's humidity and preventing oversaturation.

[0024] The control valve assembly described above can be understood as a valve that opens and closes periodically to achieve intermittent fluid flow. Examples include cam-operated hose valves, solenoid pulse valves, and rotary flap valves.

[0025] To simplify the structure of the water filling device and reduce costs, a receiving chamber for accommodating a control valve assembly is provided on the mounting frame below the water storage tank. The control valve assembly includes:

[0026] A pair of clips are respectively arranged on both sides of the flexible water outlet pipe;

[0027] The third elastic element acts on the clamping pieces, thereby causing the two clamping pieces to always tend to move closer to each other and close the flexible water outlet pipe.

[0028] A valve stem, movable axially within the receiving chamber by a drive component, moves along its axis. The end of the valve stem, as it moves, acts on two clamping plates, causing them to move apart and thus opening the flexible outlet pipe. The structure employs a clamping plate and elastic element combination, achieving on / off switching through mechanical compression of the flexible pipe; it is simple in structure and corrosion-resistant. The linear movement of the valve stem directly controls the opening and closing of the clamping plates, resulting in fast response and a low failure rate.

[0029] As an improvement, the driving component includes a first drive motor and a drive shaft driven by the output shaft of the first drive motor. The outer peripheral wall of the drive shaft has an elliptical limiting groove. One end of the valve stem adjacent to the drive shaft has a slot for the end of the valve stem to be inserted into. The inner wall of the slot has a protrusion that slides within the limiting groove. The elliptical limiting groove on the drive shaft engages with the protrusion on the valve stem, converting the motor rotation into linear reciprocating motion of the valve stem, resulting in efficient and compact transmission. No additional sensors are required; periodic start-stop is achieved through a mechanical structure.

[0030] To enable detachable connection between the cloth mounting bracket and the fixed and movable brackets, the drive mechanism includes a second drive motor mounted on the fixed bracket. The first mounting bracket has auxiliary connecting arms and a rotating shaft bracket at positions corresponding to the two ends of the drive roller. One end of the drive roller is rotatably mounted on the auxiliary connecting arm, and the other end is rotatably mounted on the rotating shaft bracket and connected to the output shaft of the drive motor. The auxiliary connecting arm is detachably connected to the fixed bracket. The cloth mounting bracket is connected to the movable bracket on the left and right sides adjacent to the location of the driven roller via a snap-fit ​​assembly.

[0031] As an improvement, the first drive motor and the second drive motor are the same drive motor, which is a dual-axis motor. The two axes of this drive motor are respectively connected to the end of the drive roller and the transmission shaft. By using a single motor to simultaneously drive the cloth rotation (second drive) and the control valve (first drive), the drive structure is greatly simplified, power consumption and manufacturing costs are reduced, and system integration is improved.

[0032] Compared with existing technologies, the advantages of this invention are as follows: When the active roller drives the annular cloth to rotate in a cycle, the portion of the cloth that has just wiped the tank wall and is covered with stains moves to the scraper assembly. The scraper assembly can physically scrape off stubborn oil stains, solid waste, and sewage adhering to the cloth. Simultaneously, the water-adding device sprays / adds water to the cloth before or during scraping, rinsing and softening the stains. The synergistic effect of scraping and washing effectively peels off and removes dirt from the cloth. The "scraping + rinsing" process performed in situ on the base by the cleaning device of this invention is automatic and continuous. As the cloth continuously circulates, each part of the annular cloth is cleaned promptly after use, ensuring that the cloth remains in a relatively clean state when contacting the tank wall during subsequent rotations, thus avoiding secondary contamination of the tank wall by the dirty cloth and significantly improving the consistency and reliability of the overall cleaning effect. The cleaning device of this invention eliminates the need for manual cleaning or frequent cloth replacement, achieving autonomous maintenance of the device, greatly improving automation and user experience. Compared to soaking or using large amounts of chemical agents, this physical scraping method is more water-saving and environmentally friendly. Attached Figure Description

[0033] Figure 1 This is a three-dimensional structural diagram of the cleaning device according to an embodiment of the present invention;

[0034] Figure 2 This is a three-dimensional structural diagram of the cleaning device according to another embodiment of the present invention;

[0035] Figure 3 This is an exploded view of the cleaning device according to an embodiment of the present invention;

[0036] Figure 4 This is a vertical sectional perspective view of the cleaning device according to an embodiment of the present invention, cut along the front-back direction, with the mounting frame and the annular cloth in a flat state.

[0037] Figure 5 This is a vertical sectional perspective view of the cleaning device according to an embodiment of the present invention, cut along the front-back direction, with the mounting frame and the annular cleaning cloth in a folded state;

[0038] Figure 6 This is a vertical sectional perspective view of the cleaning device according to an embodiment of the present invention, cut along the left-right direction;

[0039] Figure 7 This is a three-dimensional structural diagram of the cleaning device of the present invention with the cloth mounting bracket and the movable bracket in a separated state.

[0040] Figure 8 This is a three-dimensional structural diagram of the cleaning device's cloth mounting bracket according to an embodiment of the present invention, showing that the two frames of the second mounting bracket are in a separated state;

[0041] Figure 9This is a schematic diagram of the cleaning device of the present invention with the first and second mounting brackets of the cloth mounting bracket in a separated state.

[0042] Figure 10 This is a three-dimensional structural schematic diagram of the cleaning device according to another embodiment of the present invention, showing the deflection motion mechanism;

[0043] Figure 11 A three-dimensional structural diagram of the cleaning device according to an embodiment of the present invention, omitting the top wall panel of the fixing frame;

[0044] Figure 12 This is a three-dimensional structural diagram of some components of the water filling device of the cleaning device according to an embodiment of the present invention, with the drive shaft and valve stem in a separated state. Detailed Implementation

[0045] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0046] The specification and claims of this invention use terms indicating direction, such as "front," "rear," "upper," "lower," "left," "right," "side," "top," and "bottom," to describe various exemplary structural parts and elements of the invention. However, these terms are used herein merely for ease of explanation and are determined based on the exemplary orientations shown in the accompanying drawings. Since the embodiments disclosed in this invention can be arranged in different orientations, these terms indicating direction are for illustrative purposes only and should not be considered as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0047] Figures 1-12 A preferred embodiment of the cleaning device for cleaning a sink according to the present invention is shown. The cleaning device for cleaning a sink in this embodiment includes a base 1, a cloth mounting bracket 30, a ring-shaped cloth 71, a drive mechanism, and a deflection mechanism. The base 1 includes a fixed frame 10 and a movable frame 20. The fixed frame 10 serves as a carrier for supporting components such as the cloth mounting bracket 30, the ring-shaped cloth 71, the drive mechanism, and the deflection mechanism. The fixed frame 10 is generally elongated, and the movable frame 20 is also correspondingly elongated. The two ends of the movable frame 20 in the length direction are rotatably connected to the fixed frame 10 via a second rotating shaft 23. The cloth mounting bracket 30 includes a first mounting bracket 31 and a second mounting bracket 32, which are hinged together by a rotary connection mechanism, allowing the second mounting bracket 32 ​​to rotate relative to the first mounting bracket 31 about a first axis.

[0048] The cloth mounting bracket 30 is detachably mounted on the fixed bracket 10 and the movable bracket 20. Specifically, to match the fixed bracket 10 and the movable bracket 20, the first mounting bracket 31 and the second mounting bracket 32 ​​are also elongated. The first mounting bracket 31 has a first side 311 and a second side 312, and the second mounting bracket 32 ​​has a third side 321 and a fourth side 322. A drive roller 33 is provided at the first side 311 of the first mounting bracket 31. The drive roller 33 also extends in the left-right direction. The first end 3311 of the drive roller 33 can be connected to a drive mechanism provided on the fixed bracket 10, so that it can be driven by the drive mechanism to rotate around its own axis. More specifically, an auxiliary connecting arm is provided at one end of the first mounting bracket 31. A pivot hole is provided on the auxiliary connecting arm at a position opposite to the second end 3312 of the drive roller 33, allowing the second end of the drive roller 33 to be rotatably disposed therein. The auxiliary connecting arm also has an outwardly extending positioning post 111 for connection with the fixed frame 10. This positioning post 111 is a flat connecting shaft. The bottom left and right sides of the fixed frame 10 have downwardly extending protrusions 12, which are respectively opposite to the left and right sides of the first mounting frame 21 and respectively connected to the corresponding ends of the auxiliary connecting arm 11 and the drive roller 33. One of the opposing sidewalls of the two protrusions 12 is provided with a rotating shaft sleeve 13, and the other with a positioning sleeve 121. The inner end of the rotating shaft sleeve 13 is coaxially connected to a transmission gear 93, which is connected to the drive mechanism and driven to rotate. The outer end of the rotating shaft sleeve 13 is exposed relative to the sidewall of the protrusion 12 and has a shaft hole into which the first end of the drive roller 23 can be inserted. See also... Figure 3 and Figure 4 The first end of the drive roller 33 can pass through the rotating shaft frame 3111 of the first mounting bracket 31 and be inserted into the aforementioned rotating shaft sleeve 13. The rotating shaft sleeve 13 and the first end of the drive roller 33 can transmit torque in the circumferential direction, such as if the first end of the drive roller 33 is set as a non-circular wall. The drive mechanism includes a second drive motor 91, and the output shaft of the second drive motor 91 is connected to the transmission gear 93 coaxial with the rotating shaft sleeve 13 through a corresponding gear assembly 92, thereby driving the drive roller 33 to rotate. Adapted to the positioning sleeve 121, the auxiliary connecting arm 11 has a flat positioning post 111 extending toward the positioning sleeve 121, and the bottom of the positioning sleeve 121 has an installation port 1210 for the positioning post 111 to be inserted into the positioning sleeve 121 from the side. The width of the mounting port 1210 is matched with the radial dimension of the narrower part of the positioning post 111 (generally the distance between two flat surfaces). During installation, the positioning post 111 of the auxiliary connecting arm 11 is inserted into the positioning sleeve 121 from the mounting port 1210. After rotating a certain angle (such as rotating the rag mounting bracket to a horizontal state), the positioning post 111 can be limited in the positioning sleeve 121 and will not come out of the mounting port 1210.

[0049] A driven roller 34 capable of rotating freely around its own axis is provided along the fourth side 322 of the second mounting bracket 32. The left and right ends of the driven roller 34 are rotatably mounted on the two extended walls along the fourth side 322 of the second mounting bracket 32.

[0050] The annular rag 71 is wound between the drive roller 33 and the driven roller 34 of the rag mounting frame 30, and can be driven by the drive roller 33 to rotate in a cycle.

[0051] The second mounting bracket 32 ​​is rotatably connected to the first mounting bracket 31. Specifically, the two ends of the second side 312 of the first mounting bracket 31 along its length are provided with a first rotating shaft 3130, and the two first rotating shafts 3130 extend in opposite directions along the same straight line. The two ends of the third side 321 of the second mounting bracket 32 ​​along its length are respectively provided with a first shaft hole 3211 for rotatably constraining the corresponding first rotating shaft 3130, forming a rotating pair (of course, the rotating shaft and shaft hole can also be arranged in opposite directions).

[0052] The second side 312 of the first mounting bracket 31 is constructed as a smooth curved support column 313, and the third side 321 of the second mounting bracket 32 ​​is provided with an arc-shaped groove 3210 that matches its contour. The support column 313 and the arc-shaped groove 3210 may or may not be in contact. If they are in contact, the contact surface between the support column 313 and the arc-shaped groove 3210 is made of a low-friction material (such as a Teflon coating) to ensure smooth rotation.

[0053] Combination Figure 4 and Figure 5 In this embodiment, the second mounting bracket 32 ​​rotates relative to the first mounting bracket 31, causing the cloth mounting bracket 30 to have at least a flat state and a folded state: In the flat state, the first mounting bracket 31 and the second mounting bracket 32 ​​are unfolded relative to each other and are basically on the same horizontal plane, so that the bottom side of the annular cloth 71 wrapped around the cloth mounting bracket 30 serves as the cleaning surface; In the folded state, the first mounting bracket 31 and the second mounting bracket 32 ​​are folded relative to each other, so that the cloth mounting bracket 30 is L-shaped as a whole, and the annular cloth 71 wrapped around the cloth mounting bracket 30 has a horizontal cleaning surface at the bottom and a vertical cleaning surface at the side.

[0054] To ensure the cloth mounting bracket 30 is securely held in either the flat or folded state, a limiting member is provided between the first mounting bracket 31 and the second mounting bracket 32. Specifically, the support column 313 has a first slot 3131 (corresponding to the flat state) and a second slot 3132 (corresponding to the folded state) circumferentially. The third side 321 of the second mounting bracket 32 ​​has a mounting cavity 323 for mounting the limiting member, which includes a limiting buckle 41 and a first elastic element 42 (which may be a compression spring). The side wall of the arc-shaped groove 3210 has an opening 324 that penetrates the mounting cavity 323. The compression spring pushes the engaging portion 411 (with a wedge-shaped surface) of the limiting buckle 41 outwards, engaging into the corresponding slot of the support column 313. The contact surface between the engaging portion 411 of the limiting buckle 41 and the corresponding slot is a sloping curved surface. When a rotational force exceeding a set value is applied, the sloping guide portion 411 compresses the compression spring and slides out of the slot, achieving a state switch.

[0055] In this embodiment, the movable frame 20 is rotatably connected to the fixed frame 10, and the rotation axis of the movable frame 20 relative to the fixed frame 10 is on the same straight line as the rotation axis between the first mounting frame 31 and the second mounting frame 32 of the cloth mounting frame 30. Specifically, the left and right ends of the movable frame 20 have left and right arms 21 extending toward the fixed frame 10, and the inner side of the arms 21 is provided with a buckle groove 211. The left and right ends of the second mounting frame 32 are provided with elastic buckles 51, and the second mounting frame 32 is provided with a second elastic element 52 (which can also be a compression spring) so that the elastic buckles 51 have an outward extension and retraction tendency. During installation, the elastic buckles 51 are pressed to retract, aligned with the buckle groove 211, and then released. The second elastic element 52 pushes the buckles into the groove, realizing the detachable connection between the movable frame 20 and the second mounting frame 32.

[0056] See Figure 8 To facilitate the installation of the aforementioned limiting buckle 41, first elastic element 42, elastic buckle 51 and second elastic element 52, the second mounting bracket 32 ​​includes a bracket plate 320 that is fastened together from top to bottom. When the two bracket plates 320 are fastened together, they form corresponding chambers for installing the aforementioned components.

[0057] The main body of the movable frame 20 is provided with a rubber scraper 22 extending in the left-right direction. The rubber scraper 22 can conform to the outer surface of the annular wiping cloth 71. When the wiping cloth rotates, the scraper 22 can scrape off the attached dirt and correct the position of the wiping cloth.

[0058] The movable frame 20 includes a frame body 200 and the aforementioned support arms 21 arranged on the left and right sides of the frame body 200. The two support arms 21 are rotatably connected to the fixed frame 10. The frame body 200 includes a frame plate located above the top front side of the annular wiping cloth 71. The first scraper 221 and the squeegee 222 are both located at the bottom of the frame plate and in the front area of ​​the top of the annular wiping cloth 71. The first scraper 221 and the squeegee 222 extend along the width direction of the annular wiping cloth 71 to ensure that the entire width of the wiping cloth (including the easily overlooked edge area) can be effectively cleaned, improving the overall cleaning uniformity and thoroughness. The first scraper 221 has first protrusions arranged sequentially along its length direction at the edge of the annular wiping cloth 71. The design of the protrusion structure can more effectively cut into and loosen stubborn debris or sticky stains (such as paste, hair) attached to the edge area of ​​the wiping cloth, improving scraping efficiency.

[0059] The circular cloth of the cleaning device in this embodiment rotates continuously, removing the cleaned parts and replacing the uncleaned parts, thus improving cleaning continuity and efficiency. The first scraper automatically and continuously scrapes off solid waste adhering to the surface of the cloth during its rotation, effectively preventing waste from accumulating on the cloth and causing secondary pollution, significantly improving cleaning effect and hygiene.

[0060] The front wall of the mounting bracket 10 is a vertically extending wall, with a second scraper 14 protruding forward and extending in the left-right direction at its bottom. When the cloth mounting bracket 30 is folded, the corresponding portion of the annular cloth 71 contacts the second scraper 14. During the rotation of the annular cloth 71, the vertical portion scrapes away attached debris and / or wastewater, extending the self-cleaning function to the vertical cleaning surface and ensuring continuous cleaning effectiveness and hygiene when cleaning the sink wall. When the cloth mounting bracket 30 is laid flat, the second scraper 14 does not contact the annular cloth 71, and the annular cloth 71 does not contact the second scraper 14 on the mounting bracket 10, avoiding additional resistance and wear, ensuring smooth operation of the device in planar cleaning mode and extending the cloth's lifespan. A gap 100 exists between the bracket body 200 and the second scraper 14 in the front-back direction. The design of the gap 100 between the frame body 200 of the movable frame 20 and the second scraper 14 on the fixed frame 10 also makes it convenient for users to clean up the garbage scraped off by the second scraper 14.

[0061] The deflection mechanism in this embodiment includes a deflection motor (not shown in the drawings) mounted on the fixed frame 10, with a drive gear 63 mounted on the output shaft of the deflection motor. The second shaft 23 of the second mounting bracket 32 ​​is coaxially connected to the drive gear 62, and the drive gear 63 meshes with the drive gear 62 through an intermediate gear 64 (or a worm gear drive). The controller of the cleaning device is electrically connected to the aforementioned deflection motor and a distance sensor (an ultrasonic or infrared sensor can be used, and it can be located on the front side of the fixed frame 10).

[0062] When the cleaning device is operating in a flat position, if the distance sensor detects no obstructions (such as side walls) in front, the controller controls the deflection motor to drive the movable frame 20 to the unfolded position, and the limit buckle 41 engages with the first slot 3131. At this time, the bottom of the cloth forms a horizontal cleaning surface, covering the bottom wall of the sink. When it moves close to the side wall of the sink, if the distance sensor detects that the distance to the side wall is ≤ a set threshold (such as 5cm), the controller starts the deflection motor, driving the second mounting frame 32 to rotate 90° to the retracted position. The limit buckle 41 engages with the second slot 3132, and the cloth forms an L-shaped cleaning surface (the horizontal part cleans the bottom wall, and the vertical part adheres to the side wall and the L-shaped joint).

[0063] In this embodiment, the mounting bracket of the cleaning device and the annular cleaning cloth 71 fitted on the mounting bracket can form an L-shaped fold, allowing the annular cleaning cloth 71 to simultaneously create a horizontal and a vertical cleaning surface. The horizontal surface can precisely conform to the bottom wall of the sink, while the vertical surface completely covers the side walls (including the upper part and corner areas). In the folded state, the cloth naturally wraps around the L-shaped joint between the bottom and side walls, and its flexible material can tightly conform to the contour of this hard-to-reach corner, effectively solving the problem that existing technologies cannot reach this heavily soiled area. During use, the active roller 33 drives the annular cleaning cloth 71 to rotate cyclically, causing the cloth fibers to continuously scrape and rub against the surface of the sink wall. This directly simulates the core actions of manual scrubbing (applying pressure and friction), and its removal power for stubborn oil stains and scale far surpasses that of simple water flow or soaking, overcoming the shortcomings of insufficient spray cleaning power. Furthermore, the cleaning device efficiently cleans large areas of the bottom wall when laid flat; switching to the folded state seamlessly transforms it into a "three-dimensional" cleaning mode that simultaneously cleans the bottom wall, side walls, and joints. A single device and a single operation can thoroughly clean all key inner surfaces of the sink, eliminating the need for manual secondary treatment or combining multiple spot cleaners, significantly improving cleaning efficiency and thoroughness. Compared to existing soaking cleaning technologies, it greatly saves water resources and eliminates the need for extensive rinsing after cleaning, achieving an "instant" cleaning effect.

[0064] See Figure 6 and Figure 11In this embodiment, the mounting bracket 10 is also equipped with a water filling device. The water filling device is located above the rear part of the top of the annular wiping cloth 71. The water filling device includes a water storage tank 15, a flexible water outlet pipe 151, and a control valve assembly. The water storage tank 15 is a long strip extending left and right, used to store cleaning water, and is located above the rear side of the annular wiping cloth 71. The flexible water outlet pipe 151 is vertically extended, with its inlet communicating with the bottom of the water storage tank 15 and its outlet facing the top of the annular wiping cloth 71. The control valve assembly is used to realize intermittent water filling and is installed in the receiving chamber below the water storage tank 15 on the mounting bracket 10. The control valve assembly includes a pair of clamps 16, a third elastic element 161, a valve stem 17, and a drive element. The pair of clamps 16 are respectively arranged on both sides of the flexible water outlet pipe 151. There are two corresponding third elastic elements 161 (such as compression springs), which act on the two clamps 16 respectively, so that the two clamps 16 always tend to move closer to each other and flatten and close the flexible water outlet pipe 151. The valve stem 17 is movably disposed in the receiving chamber of the fixing frame 10 along its axial direction. The receiving chamber of the fixing frame 10 is located below the water storage tank 15 and is also a long strip extending left and right. One end of the valve stem 17 is adjacent to the clamping piece 16, and the other end is constructed with a slot 170, the inner wall of which has a protrusion 17112. The driving member is driven by the first driving motor and can cooperate with the valve stem 17 under the drive of the first driving motor, thereby driving the valve stem 17 to reciprocate in the left and right direction. In some embodiments, the first driving motor and the second driving motor 91 are the same driving motor, that is, the power source used to drive the rotation of the active roller 33 and control the opening and closing of the flexible water outlet pipe 151 is the same power source. The driving motor is a dual-shaft driving motor, one output shaft of the dual-shaft driving motor is driven by the gear assembly 92, and the other output shaft is connected to the driving member. The driving member includes a transmission shaft 18, the outer peripheral wall of which is provided with an elliptical limiting groove 180. The protrusion 17112 within the slot 170 of the valve stem 17 slides within the limiting groove 180. When the drive motor rotates the transmission shaft 18, the elliptical limiting groove 180 pushes the protrusion 17112 of the valve stem 17, causing the valve stem 17 to reciprocate linearly along its axial direction. When the valve stem 17 moves toward the clamping plates 16, its end inserts between the two clamping plates 16 (each clamping plate 16 has a corresponding guide slope 160) and spreads them apart, thereby opening the flattened flexible water outlet pipe 151, allowing water to flow from the water storage tank 15 to the annular cloth 71. When the valve stem 17 moves back out in the opposite direction, under the action of the third elastic element 161, the two clamping plates 16 move closer together again to flatten the flexible water outlet pipe 151, shutting off the water flow. This cycle achieves intermittent water addition through periodic opening and closing.

[0065] The cleaning device in this embodiment operates as follows: The cleaning device is placed in the water tank to be cleaned. If the bottom of the tank needs cleaning, the cleaning device is adjusted and the cloth mounting bracket 30 is kept flat. If the bottom, side walls, and L-shaped corners of the tank need cleaning simultaneously, the movable bracket 20 is rotated relative to the fixed bracket 10, causing the second mounting bracket 32 ​​detached from it to move. Simultaneously, the second mounting bracket 32 ​​rotates approximately 90 degrees relative to the first mounting bracket 31, causing the cloth mounting bracket 30 to fold, forming an L-shaped horizontal and vertical cleaning surface with the annular cloth 71. Then, the drive motor (dual-axis motor) is started. One output shaft of the motor drives the active roller 33 to rotate, causing the annular cloth 71 to circulate between the active roller 33 and the driven roller 34. The cleaning surface of the cloth (the bottom horizontal surface, and in the folded state, the side vertical surface) contacts the tank wall and generates friction, simulating manual scrubbing to remove oil and scale. Simultaneously, the cloth self-cleaning process occurs, with the used, soiled portion of the cloth moving to the top area as it rotates. The rag first passes through the first scraper 221 (located behind the squeegee 222). The first scraper 221 removes solid debris adhering to the surface of the rag. This "solid-liquid separation" design improves scraping efficiency and avoids solids clogging the squeegee structure. Then, the rotating rag passes through the squeegee 222 to remove the wastewater saturated in the rag. After removing the dirt and wastewater, the rag continues to rotate to the upper rear side. At this time, the other output shaft of the drive motor drives the valve stem 17 to reciprocate through the transmission shaft 18 and the elliptical limiting slide groove 180. When the valve stem 17 extends and opens the clamp 16, the flexible water outlet pipe 151 opens, and the clean water in the water tank 15 flows down by gravity, spraying onto the area of ​​the rag that has just had dirt removed for rinsing and wetting, preparing for the next round of cleaning the tank wall. When the valve stem 17 retracts periodically, the clamp 16 closes the water pipe under the action of the third elastic element 161, stopping the water supply and preventing the rag from becoming too wet. This water filling point is located on the back of the scraper assembly (in the direction of the cloth's rotation), ensuring that dirt is scraped off before rinsing, and preventing sewage and garbage from being washed back into the cloth.

[0066] In this embodiment, the cleaning device for cleaning the sink can be controlled by a voice module. It is equipped with a controller, a voice receiving module, and a voice parsing module. The voice receiving module receives user commands, and the voice parsing module parses the commands. Based on the parsed commands, the controller controls the cleaning device to perform corresponding operations, thereby realizing intelligent control of the cleaning device and improving the user experience.

Claims

1. A cleaning device for cleaning sinks, characterized in that... include: Base (1); A cloth mounting bracket (30) is installed at the bottom of the base (1). The cloth mounting bracket (30) has two opposite sides respectively provided with an active roller (33) that can be driven to rotate by a drive mechanism and a driven roller (34) that can rotate freely. A ring-shaped rag (71) is wound around the active roller (33) and driven roller (34) of the rag mounting frame (30) and can be driven by the active roller (33) to rotate in a cycle. The base (1) is provided with a scraper assembly for scraping off garbage and sewage from the annular rag (71) and a water-adding device for adding water to the annular rag (71).

2. The cleaning device for cleaning a sink according to claim 1, characterized in that: The scraper assembly acts on the top of the annular cloth (71), and the water-adding device is also located at the top of the annular cloth (71) to add water. Along the rotation direction of the annular cloth (71), the water-adding device is located on the rear side of the scraper assembly.

3. The cleaning device for cleaning a sink according to claim 2, characterized in that: The scraper assembly includes a first scraper (221) and a squeegee (222). The first scraper (221) can act on the surface of the annular cloth (71) and scrape off the garbage material on the surface of the annular cloth (71) during the cyclic rotation of the annular cloth (71). The squeegee (222) can act on the surface of the annular cloth (71) and scrape off the sewage in the annular cloth (71) during the cyclic rotation of the annular cloth (71). Along the rotation direction of the annular cloth (71), the squeegee (222) is located in front of the first scraper (221).

4. The cleaning device for cleaning a sink according to claim 3, characterized in that: The base (1) includes a fixed frame (10) and a movable frame (20) rotatably connected to the fixed frame (10). The rag mounting frame (30) includes a first mounting frame (31) and a second mounting frame (32) that can rotate relative to each other about a first axis extending to the left and right. The first mounting frame (31) is fixed relative to the fixed frame (10) and the active roller (33) is provided on the side away from the second mounting frame (32). The driven roller (34) is provided on the side of the second mounting frame (32) away from the first mounting frame (31). The extending directions of the active roller (33) and the driven roller (34) are parallel to the first axis. The second mounting bracket (32) rotates relative to the first mounting bracket (31), causing the cloth mounting bracket (30) to have at least a flat state and a folded state: In the flat state, the first mounting bracket (31) and the second mounting bracket (32) are unfolded relative to each other, and the bottom side of the annular rag (71) wrapped around the rag mounting bracket (30) serves as the cleaning surface; In the folded state, the first mounting bracket (31) and the second mounting bracket (32) are closed relative to each other, so that the rag mounting bracket (30) is L-shaped as a whole, and the annular rag (71) wrapped around the rag mounting bracket (30) has a horizontal cleaning surface at the bottom and a vertical cleaning surface at the side. The second mounting bracket (32) is detachably mounted on the movable bracket (20). The axis of rotation of the movable bracket (20) relative to the fixed bracket (10) is on the same straight line as the first axis. The scraper assembly is mounted on the movable bracket (20), and the water filling device is mounted on the fixed bracket (10).

5. The cleaning device for cleaning a sink according to claim 4, characterized in that: The movable frame (20) includes a frame body (200) and left and right side support arms (21) arranged on the frame body (200). The two support arms (21) are rotatably connected to the fixed frame (10). The frame body (200) includes a frame plate located above the top front side of the annular wiping cloth (71). The first scraper (221) and the water scraper (222) are both located at the bottom of the frame plate.

6. The cleaning device for cleaning a sink according to claim 4, characterized in that: The water supply device includes a water storage tank (15), a flexible water outlet pipe (151), and a control valve assembly that intermittently acts on the flexible water outlet pipe (151) to open and close the flexible water outlet pipe (151). The water storage tank (15) is located above the rear portion of the annular rag (71). The inlet of the flexible water outlet pipe (151) is connected to the water storage tank (15), and the outlet faces the annular rag (71).

7. The cleaning device for cleaning a sink according to claim 6, characterized in that: The mounting bracket (10) has a receiving chamber located below the water storage tank (15) for accommodating a control valve assembly, the control valve assembly comprising: A pair of clips (16) are respectively arranged on both sides of the flexible water outlet pipe (151); The third elastic element (161) acts on the clamp (16), thereby causing the two clamps (16) to always tend to move closer to each other and close the flexible water outlet pipe (151); The valve stem (17) is movably disposed in the receiving chamber by being driven by a drive member along its axial direction. The end of the valve stem (17) can act on the two clamps (16) as the valve stem (17) moves, causing the two clamps (16) to move away and thus open the flexible water outlet pipe (151).

8. The cleaning device for cleaning a sink according to claim 7, characterized in that: The driving component includes a first drive motor and a drive shaft (18) that is drively connected to the output shaft of the first drive motor. The outer peripheral wall of the drive shaft (18) is provided with an elliptical limiting groove (180). The valve stem (17) is provided with a slot (170) near one end of the drive shaft (18) for the end of the valve stem (17) to be inserted therein. The inner wall of the slot (170) has protrusions (171) (12), and the protrusions (171) (12) are slidably engaged in the limiting groove (180).

9. The cleaning device for cleaning a sink according to claim 8, characterized in that: The drive mechanism includes a second drive motor mounted on the fixed frame (10). The first mounting frame (31) is provided with an auxiliary connecting arm and a rotating shaft frame (3111) at positions corresponding to the two ends of the drive roller (33). One end of the drive roller (33) is rotatably mounted on the auxiliary connecting arm, and the other end is rotatably mounted on the rotating shaft frame (3111) and is connected to the output shaft of the drive motor. The auxiliary connecting arm is detachably connected to the fixed frame (10). The rag mounting frame (30) is connected to the movable frame (20) on the left and right sides adjacent to the location of the driven roller (34) by a snap-fit ​​assembly.

10. The cleaning device for cleaning a sink according to claim 9, characterized in that: The first drive motor and the second drive motor are the same drive motor and are dual-axis motors. The two shafts of the drive motor are respectively connected to the end of the active roller (33) and the transmission shaft (18).

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