Cleaning device for kitchen

Abstract

The invention relates to a cleaning device for a kitchen. The cleaning device comprises a base; the roller assembly comprises a first roller support and a second roller support which are arranged side by side, a first cleaning cylinder arranged on the first roller support and a second cleaning cylinder arranged on the second roller support, and the first roller support and the second roller support are connected through a sliding limiting structure; the first elastic piece acts between the first roller bracket and the second roller bracket; the handle assembly comprises a handle and swing rod assemblies, the whole handle is in a rod shape, the swing rod assemblies are arranged at the two ends of the handle respectively, and each swing rod assembly comprises a first swing rod and a second swing rod; the scraping plate assembly comprises a dirt scraping plate and a second elastic piece, the dirt scraping plate is arranged on the corresponding first roller support or the second roller support in the mode that the dirt scraping plate can be close to or far away from the cleaning cylinder, and the second elastic piece acts on the dirt scraping plate and enables the dirt scraping plate to always have the trend of being far away from the corresponding cleaning cylinder. The self-cleaning device has the advantage that efficient self-cleaning of the cleaning cylinder can be achieved.

Description

Technical Field

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

[0002] Kitchen surfaces, such as countertops and sinks, are prone to accumulating stubborn stains like grease and limescale during daily use. Current cleaning methods primarily rely on manual scrubbing or soaking. Manual cleaning is inefficient and struggles to thoroughly remove residue from sink walls, especially in deep sinks and corners. Soaking consumes a lot of water and requires secondary cleaning afterward, failing to provide immediate cleaning. While some products use chemical cleaners, there are risks of corroding sink surfaces and contaminating the water. In recent years, although some self-cleaning technologies have emerged, they are mostly limited to cleaning drain outlets or simple spray systems, lacking proactive cleaning solutions for 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 sink walls, but achieving self-cleaning of the cloths remains a critical technical challenge 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 kitchen cleaning device that can achieve efficient self-cleaning of the cleaning cylinder, in light of the current state of the technology.

[0005] The technical solution adopted by the present invention to solve the above-mentioned technical problems is: a kitchen cleaning device, characterized in that it includes:

[0006] Base;

[0007] The roller assembly, located below the base, includes two side-by-side first roller supports and second roller supports, as well as a first cleaning cylinder on the first roller support and a second cleaning cylinder on the second roller support. The first and second cleaning cylinders can be driven by a drive mechanism to rotate around their own axes. The first roller support and the second roller support are connected by a sliding limiting structure, so that the first roller support and the second roller support can move closer to or further away from each other in the horizontal direction.

[0008] The first elastic element acts between the first roller support and the second roller support, thereby causing the first roller support and the second roller support to always tend to move closer to each other.

[0009] The handle assembly includes a handle that is generally rod-shaped and rocker arm assemblies respectively disposed at two ends of the handle. Each rocker arm assembly includes a first rocker arm and a second rocker arm. The first end of the first rocker arm and the first end of the second rocker arm in the same group of rocker arm assemblies are rotatably connected and rotatably connected together to the corresponding ends of the handle. The second ends of the first rocker arm and the second rocker arm in the same group of rocker arm assemblies are respectively rotatably connected to the corresponding ends of the first roller bracket and the corresponding ends of the second roller bracket.

[0010] The scraper assembly includes a scraper blade and a second elastic member. The scraper blade is disposed on a corresponding first roller support or a second roller support in a manner that allows it to move closer to or further away from the cleaning cylinder. The second elastic member acts on the scraper blade and causes the scraper blade to always tend to move away from the corresponding cleaning cylinder.

[0011] A force is applied to the handle near the base. The process of the handle approaching the base includes at least a first action process and a second action process. In the first action process, the first roller support and the second roller support move away from each other relative to each other against the elastic force of the first elastic element. In the second action process, the handle acts on the scraper assembly so that the scraper overcomes the elastic force of the second elastic element and abuts against the first cleaning cylinder or the second cleaning cylinder.

[0012] The aforementioned "sliding limiting structure" can be understood as a mechanical combination that restricts an object to move only along a specific path. Examples include guide rail and slider mating structures, slide rail and slider (plate) mating structures, and guide rod and linear bearing mating structures.

[0013] The aforementioned "drive mechanism" can be understood as a device used to output rotational power, such as a motor and gear set cooperation structure, a motor and belt drive cooperation structure, a motor and worm gear cooperation structure, etc.

[0014] When the operating handle is pressed down to the second action phase, the scraper blade overcomes the elasticity of the second elastic element under the action of the handle, pressing firmly against the surface of the rotating cleaning drum (roller brush). As the cleaning drum rotates, the scraper blade, like a "scrubbing" motion, continuously scrapes away the accumulated grease and scale on the surface of the drum. This is the first time in a kitchen sink cleaning device that the roller brush has achieved real-time, active physical self-cleaning while in operation, effectively solving the problem of traditional cloth-type roller brushes easily accumulating dirt and failing to clean themselves. During use, the user can choose to apply different forces depending on the degree of dirt in the area to be cleaned. When a certain amount of force is applied, the cleaning drum can effectively get close to the area to be cleaned, such as the corners of the sink, improving the cleaning effect. When it is necessary to clean the surface of the cleaning drum, the handle is pressed down again (entering the second action phase, i.e., the scraping and pressing phase), directly acting on the scraper assembly, precisely controlling the necessary physical pressure applied by the scraper blade to the roller brush. The second elastic element ensures that the pressure is controllable and uniform, fully simulating the "pressure friction" effect of manual scrubbing while avoiding excessive wear on the roller brush. In this invention, the self-cleaning process of the cleaning drum relies entirely on the mechanical structure and the rotation of the roller brush to achieve physical scraping, eliminating the need for additional water, electricity, or chemical cleaning agents. This avoids water waste and the risk of chemical pollution, aligning with the concept of green cleaning. In particular, the dual-roller design, combined with an adjustable spacing structure and a press-down handle assembly, allows the device to reach deep into the sink and into corner areas. The self-cleaning function acts directly on the cleaning drum body, ensuring that the core cleaning component (the roller brush) remains in a highly efficient working state, thereby improving the overall cleaning effect and durability against stubborn stains on the sink walls.

[0015] To simplify the structure and optimize the force transmission path, avoiding the high complexity and poor stability issues caused by the synchronous movement of two rollers, the first roller support is fixed relative to the base, while the second roller support can move closer to or further away from the first roller support. The scraper assembly is mounted on the first roller support. This structural design, with the first roller support fixed as the reference point and only the second roller support moving, reduces the assembly difficulty of the roller assembly.

[0016] To achieve stable sliding between the two roller supports, the first roller support includes a horizontally extending first connecting plate, and the second roller support includes a horizontally extending second connecting plate. One of the first and second connecting plates has a horizontally extending limiting slide, and the other is slidably disposed within the limiting slide. This structural design provides rigid guidance through the limiting slide, ensuring the straightness of the sliding trajectory and reducing the need for additional guide rail components, thus lowering costs.

[0017] As an improvement, the second connecting plate has the aforementioned limiting slide rail, and the top of the second connecting plate also has a limiting groove that communicates with the limiting slide rail. The extending direction of the limiting groove is perpendicular to the length direction of the second cleaning cylinder. The first connecting plate has a first positioning post that extends upward and is slidably limited in the limiting groove. The limiting slide rail can control horizontal movement, while the limiting groove and the first positioning post restrict the front-to-back and left-to-right degrees of freedom, ensuring the stability of the relative sliding between the two connecting plates. The first positioning post is fixed to the base, enhancing the overall structural rigidity.

[0018] To facilitate the assembly between the two connecting plates, the second connecting plate includes a connecting plate body and a cover plate detachably connected to the top of the connecting plate body. The cover plate and the connecting plate body are spaced apart in the vertical direction to form the limiting slide. The top of the first positioning post is fixedly connected to the bottom of the base.

[0019] As an improvement, in order to simplify the fit between the handle and the scraper, the first roller bracket further includes a first vertical plate extending downward from the first connecting plate. The first vertical plate has a strip-shaped clearance opening extending in a direction parallel to the axis of the first cleaning cylinder, and the scraper is slidably disposed in the strip-shaped clearance opening.

[0020] Also includes:

[0021] The second elastic element acts on the scraper blade, thereby causing the scraper blade to always tend to move away from the first cleaning cylinder;

[0022] A linkage rod is movably mounted on the first connecting plate. The lower end of the linkage rod slides into contact with the side of the scraper away from the first cleaning cylinder via a first wedge structure. During the second action, the linkage rod is driven downward by the handle and acts on the scraper during the downward movement, thereby driving the scraper to act on the first cleaning cylinder.

[0023] The aforementioned "first wedge structure" can be understood as a guiding contact surface that uses an inclined plane to decompose / convert the direction of force.

[0024] When the linkage rod is pressed down, the wedge surface can convert the vertical force into the horizontal thrust of the scraper, making the overall structure more compact; the strip-shaped clearance opening (similar to a limit function slide) can constrain the scraper path and ensure linear movement.

[0025] The aforementioned second elastic element can employ various existing technologies, including compression springs, torsion springs, leaf springs, and other elastic components. However, to better coordinate with the aforementioned scraper blade and first vertical plate, as an improvement, the second elastic element is a U-shaped spring sheet. One side of the spring sheet is connected to the first vertical plate, and the other side is connected to the scraper blade. The U-shaped spring sheet is integrally molded, corrosion-resistant, and easy to install; the double-sided connection of the spring sheet provides uniform rebound force and ensures the stability of the scraper blade's movement.

[0026] To ensure the cleaning effect on the area to be cleaned, the roller assembly further includes a first roller connecting frame and a second roller connecting frame. The two ends of the first cleaning cylinder are rotatably mounted on the first roller connecting frame, and the two ends of the second cleaning cylinder are rotatably mounted on the second roller connecting frame. The two ends of the first roller connecting frame are movably mounted vertically on the two ends of the first roller support through a first floating connecting component, and the two ends of the second roller connecting frame are movably mounted vertically on the two ends of the second roller support through a second floating connecting component.

[0027] As an improvement, the first roller bracket includes two opposite first end walls along the length of the first roller bracket. Each of the two opposite side walls of the first roller bracket has a vertically arranged first limiting groove. Each of the two ends of the first roller connecting frame has an outwardly protruding first slider. The two first sliders slide up and down and are constrained in the corresponding first limiting grooves. A third elastic member is also provided between the first roller bracket and the first roller connecting frame. Under the action of the third elastic member, the first roller connecting frame always has a tendency to move downward away from the first roller bracket.

[0028] The second roller support includes two opposing second end walls along its length. Each of the opposing side walls of the two second end walls has a vertically arranged second limiting groove. Each end of the second roller connecting frame has an outwardly protruding second slider. The two second sliders slide vertically and are constrained within their corresponding second limiting grooves. A fourth elastic element is also provided between the second roller support and the second roller connecting frame. Under the action of the fourth elastic element, the second roller connecting frame always tends to move downwards relative to the second roller support. This floating connection assembly and elastic element design allows the cleaning cylinder to buffer vertically, adapting to cleaning surfaces with varying contours.

[0029] To reduce resistance during the self-cleaning process of the cleaning cylinder, the scraper blade and the first roller connecting frame are slidably engaged by a second wedge structure. As the scraper blade moves toward the first cleaning cylinder, it drives the first roller connecting frame and the first cleaning cylinder mounted on the first roller connecting frame to move upward through the wedge structure.

[0030] The aforementioned "second wedge structure" can be understood as a guiding contact surface that uses an inclined plane to decompose / convert the direction of force.

[0031] Through the above-mentioned cooperative structure, during the second working process in which the handle continues to move downward, the scraper blade drives the first roller connecting frame and the first cleaning cylinder provided on the first roller connecting frame to move upward through the wedge structure. In this way, the first cleaning cylinder can detach from the cleaning area and not clean it. This greatly reduces the friction components during the cleaning process of the cleaning cylinder rotating and cleaning (contacting the scraper blade), ensuring the self-cleaning effect of the cleaning cylinder.

[0032] In order to ensure that the cleaning cylinder and the area to be cleaned are at a reasonable height (vertical distance), the bottom side of both ends of the first roller bracket has a first support protrusion extending downward, and the bottom side of both ends of the second roller bracket has a second support protrusion extending downward. During the second operation, the first cleaning cylinder provided on the first roller connecting frame moves upward and is higher than the first support protrusion.

[0033] The aforementioned first elastic element can employ various existing technologies, including compression springs, torsion springs, leaf springs, and other elastic elements. However, to better cooperate with the two roller supports, the first elastic element is a tension spring, with its two ends connected to the first roller support and the second roller support, respectively. In a preferred embodiment, at least two tension springs are arranged sequentially along the axis of the roller assembly.

[0034] Compared with existing technologies, the advantages of this invention are as follows: When the operating handle is pressed down to the second action phase, the scraper blade overcomes the elasticity of the second elastic element under the action of the handle and presses tightly against the surface of the rotating cleaning cylinder (roller brush). As the cleaning cylinder rotates, the scraper blade performs a "scrubbing" motion, continuously scraping away accumulated oil and scale on the cylinder surface. This is the first time that a real-time, active physical self-cleaning of the roller brush has been achieved in a kitchen sink cleaning device, effectively solving the problem that traditional cloth-type roller brushes easily trap dirt and cannot clean themselves. During use, the user can apply different forces depending on the degree of dirt in the area to be cleaned. When a certain amount of force is applied, the cleaning cylinder can effectively approach the area to be cleaned, such as the corners of the sink, improving the cleaning effect. When cleaning the surface of the cleaning cylinder is required, the handle is pressed down further (entering the second action phase, i.e., the scraping stage), directly acting on the scraper assembly to precisely control the scraper blade to apply the necessary physical pressure to the roller brush. The second elastic element ensures controllable and uniform pressure, fully simulating the "pressure friction" effect of manual scrubbing while avoiding excessive wear on the roller brush. In this invention, the self-cleaning process of the cleaning cylinder relies entirely on the mechanical structure linkage and the rotation of the roller brush itself to achieve physical scraping, without consuming additional water resources, electricity, or chemical cleaning agents, eliminating water waste and the risk of chemical pollution, in line with the concept of green cleaning. In particular, the dual-roller design, combined with an adjustable spacing structure and a press-down handle assembly, allows the device to reach deep into the sink and corner areas. The self-cleaning function acts directly on the cleaning cylinder body, ensuring that the core cleaning component (roller brush) always maintains a highly efficient working state, thereby improving the overall cleaning effect and durability of stubborn stains on the sink walls. Attached Figure Description

[0035] Figure 1 This is a three-dimensional structural diagram of a kitchen cleaning device according to an embodiment of the present invention;

[0036] Figure 2 This is a left view of a kitchen cleaning device according to an embodiment of the present invention;

[0037] Figure 3 This is a cross-sectional view of a kitchen cleaning device according to an embodiment of the present invention;

[0038] Figure 4 This is a cross-sectional view of the kitchen cleaning device according to an embodiment of the present invention at another location;

[0039] Figure 5 This is a three-dimensional structural diagram of the kitchen cleaning device according to an embodiment of the present invention, after omitting the handle assembly.

[0040] Figure 6 An exploded view of the kitchen cleaning device according to an embodiment of the present invention, omitting the handle assembly;

[0041] Figure 7This is a three-dimensional structural diagram of the roller assembly according to an embodiment of the present invention, showing only the assembly on the side where the first roller support is located;

[0042] Figure 8 This is an exploded view of the roller assembly according to an embodiment of the present invention, showing only the assembly on the side where the first roller support is located. Detailed Implementation

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments.

[0044] 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.

[0045] Figures 1-8 A preferred embodiment of the kitchen cleaning apparatus of the present invention is shown. The kitchen cleaning apparatus of this embodiment includes a base 10, a roller assembly, a first elastic member 31, a handle assembly, and a scraper assembly.

[0046] The base 10 adopts a rectangular shell structure with a hollow interior to accommodate the drive mechanism. The drive mechanism includes a motor fixed within the base 10. The motor output shaft is connected via a gear set to the rotating shafts of the first cleaning cylinder 251 and the second cleaning cylinder 252, respectively, to achieve synchronous rotation of the two cylinders. Alternatively, the first cleaning cylinder 251 and the second cleaning cylinder 252 can also employ a cleaning cylinder structure with a built-in drive mechanism, i.e., a built-in power source. A corresponding water storage box can also be provided on the base 10 to provide water for wetting the cleaning cylinders.

[0047] The roller assembly is located below the base 10 and includes a first roller support 21 and a second roller support 22. The first roller support 21 includes a first connecting plate 211 extending horizontally toward the side where the second roller support 22 is located, and a first vertical plate 212 extending downward from the first connecting plate 211. The main body of the first roller support 21 has two opposing first end walls 214 along its length, and vertically extending first limiting grooves 2140 are provided on the two opposing side walls of the two first end walls 214. The second roller support 22 includes a second connecting plate 221 extending horizontally toward the side where the first roller support 21 is located. The main body of the second roller support 22 has two opposing second end walls 222 along its length, and vertically extending second limiting grooves 2220 are provided on the two opposing side walls of the two second end walls 222.

[0048] See Figure 3 , Figure 5 and Figure 6 In this embodiment, the first roller support 21 and the second roller support 22 are connected by a sliding limiting structure. Specifically, a horizontally extending limiting slide 2210 is provided on the second connecting plate 221. The second connecting plate 221 consists of a connecting plate body 2211 and a detachable cover plate 2212, with the gap between the two forming the limiting slide 2210. The cover plate 2212 can be connected to the connecting plate body 2211 by screws or clips. The cover plate 2212 also has a limiting groove 22110 extending from the top surface into the limiting slide 2210. The extending direction of the limiting groove 22110 is perpendicular to the axial direction of the second cleaning cylinder 252. In some embodiments, there are two limiting grooves 22110 arranged at left and right intervals. Correspondingly, the first connecting plate 211 of the second roller support 22 is provided with an upwardly extending first positioning post 2111. The top end of the first positioning post 2111 can be fixed to the bottom of the base 10 by screws. There are also two first positioning posts 2111 arranged at left and right intervals. During installation, the first positioning post 2111 is fitted onto the limiting groove 22110 of the cover plate 2212 and then fixed to the main body of the connecting plate. The top end of the first positioning post 2111 is fixed to the bottom wall of the base 10. Thus, the first positioning post 2111 is slidably confined in the limiting groove 22110. At the same time, the first connecting plate 211 is slidably confined in the limiting slide 2210 of the second connecting plate 221. The first connecting plate 211, the second connecting plate 221, and the corresponding first positioning post 2111 and limiting groove 22110 constitute the aforementioned sliding limiting structure.

[0049] In some embodiments, the first cleaning cylinder 251 is mounted on the first roller support 21 via a first roller connecting frame 23. The two ends of the first roller connecting frame 23 along its main body length have opposing third end walls 231. The outer walls of the two third end walls 231 are provided with outwardly protruding first sliders 232, which can be embedded in the first limiting grooves 2140 of the corresponding first end walls 214 of the first roller support 21 to achieve vertical sliding constraint. The third end walls 231 of the first roller connecting frame 23 and the first end walls 214 of the first roller support 21 are provided with third elastic elements 33 in the vertical direction. These third elastic elements 33 are third spring sheets, which, under the action of the third spring sheets, ensure that the first roller connecting frame 23 always has a downward tendency. Similarly, the second cleaning cylinder 252 is mounted on the second roller support 22 via a second roller connecting frame 24. The second roller connecting frame 24 has two opposing fourth end walls 241 at its two ends along its main length. The outer walls of the two fourth end walls 241 are provided with outwardly protruding second sliders 242. These second sliders 242 can be embedded in the second limiting grooves 2220 of the corresponding second end walls 222 of the second roller bracket 22 to achieve vertical sliding constraint. The fourth end walls 241 of the second roller connecting frame 24 and the second end walls 222 of the second roller bracket 22 are provided with fourth elastic elements 34 in the vertical direction. These fourth elastic elements 34 are fourth spring sheets, which, under the action of the fourth spring sheets, ensure that the second roller connecting frame 24 always has a downward tendency.

[0050] In this embodiment, the first elastic element 31 uses two parallel tension springs, with both ends fixed between the top of the first roller bracket 21 and the top of the second roller bracket 22, so that the two roller brackets always tend to move closer to each other.

[0051] The handle assembly of this embodiment includes a rod-shaped handle 40 and rocker arm assemblies disposed at both ends of the handle 40 along its length. Each rocker arm assembly includes a first rocker arm 41 and a second rocker arm 42. The first end of the first rocker arm 41 and the first end of the second rocker arm 42 are rotatably connected by a pin and are hinged together to one end of the handle 40. The second end of the first rocker arm 41 is hinged to the outer side of the first end wall 214 of the first roller bracket 21, and the second end of the second rocker arm 42 is hinged to the outer side of the second end wall 222 of the second roller bracket 22.

[0052] The scraper assembly of this embodiment is mounted on the first roller support 21 and includes a scraper 50, a second elastic element 32, and a linkage rod 51.

[0053] The scraper blade 50 is slidably disposed horizontally in the strip-shaped clearance opening 2120 of the first vertical plate 212, and its side wall away from the first cleaning cylinder 251 has an inclined wedge-shaped surface. The linkage rod 51 vertically penetrates the first connecting plate 211, and its lower end has an inclined surface with an angle consistent with the aforementioned wedge-shaped surface of the scraper blade 50 (the aforementioned wedge-shaped surface and inclined surface constitute a first wedge surface structure 521). The linkage rod 51 and the scraper blade 50 cooperate through the aforementioned first wedge surface structure 521, enabling the linkage rod 51 to move downwards, driving the scraper blade 50 towards the first cleaning cylinder 251. The upper end of the linkage rod 51 extends to the vicinity of the base 10, directly below the handle 40. The top of the linkage rod 51 is lower than the height of the handle 40, and there is a certain distance between them in the vertical direction.

[0054] The second elastic element 32 in this embodiment adopts a U-shaped spring sheet. One side of the U-shaped spring sheet is fixed to the first vertical plate 212, and the other side is connected to the scraper 50, so that the scraper 50 is always away from the first cleaning cylinder 251.

[0055] The working process of pressing down the handle 40 of the cleaning device is divided into two action stages:

[0056] First action process: When the handle is pressed down 40, the swing arm assembly pushes the second roller bracket 22 to move horizontally outward against the tension of the spring, so that the distance between the two rollers increases to adapt to the width of the water tank. In particular, it can make the corresponding cleaning cylinder act laterally on the corner of the water tank to achieve efficient cleaning.

[0057] The second action: Continue pressing down the handle 40, the linkage rod 51 is pressed down by the handle 40, and its lower inclined surface pushes the wedge surface of the scraper 50, forcing the scraper 50 to overcome the elastic force of the second elastic element 32 and move horizontally inward, tightly pressing against the surface of the first cleaning cylinder 251. At this time, the first cleaning cylinder 251 rotates, and the scraper 50 can scrape off the dirt on its surface.

[0058] Another important inventive point of this embodiment is that, during the process of the scraper 50 moving towards the first cleaning cylinder 251 driven by the linkage rod 51, it also drives the first roller connecting frame 23 and the first cleaning cylinder 251 disposed on the first roller connecting frame 23 to move upward through the second wedge surface structure 522, thereby detaching it from the wall of the area to be cleaned and reducing the rotational resistance of the first cleaning cylinder 251. Specifically, the inner wall of the scraper 50 is provided with an inclined second wedge surface, and the first roller connecting frame 23 is provided with a corresponding matching inclined surface. When the scraper 50 moves inward, the second wedge surface pushes the first roller connecting frame 23 to overcome the third elastic member 33 and move upward, causing the first cleaning cylinder 251 to detach from the water tank wall (that is, the lowest position of the first cleaning cylinder 251 is higher than the bottom of the first support protrusion 213), greatly reducing the rotational resistance.

[0059] The bottom two ends of the first roller bracket 21 have downwardly extending first support protrusions 213, and the bottom two ends of the second roller bracket 22 have downwardly extending second support protrusions 223. Thus, the corresponding cleaning cylinder and the area to be cleaned can be within a reasonable height (vertical distance) range, and the movement stability of the roller assembly of the cleaning device can also be ensured.

[0060] In this embodiment, when the handle 40 is pressed down to the second action phase, the scraper 50 overcomes the elasticity of the second elastic element 32 under the action of the handle 40 and presses tightly against the surface of the rotating cleaning cylinder (roller brush). As the cleaning cylinder rotates, the scraper 50 performs a "scrubbing" motion, continuously scraping away the accumulated oil and scale on the cylinder surface. This is the first time that a real-time, active physical self-cleaning of the roller brush in working condition has been achieved in a kitchen sink cleaning device, effectively solving the problem that traditional cloth-type roller brushes easily accumulate dirt and cannot clean themselves. During the use of the cleaning device, the user can choose to apply different forces according to the degree of dirt in the area to be cleaned. When a certain amount of force is applied, the cleaning cylinder can effectively get close to the area to be cleaned, such as the corners of the sink, improving the cleaning effect. When it is necessary to clean the surface of the cleaning cylinder, the handle 40 is pressed down again (entering the second action phase, i.e., the scraping and pressing phase), directly acting on the scraper assembly, precisely controlling the scraper 50 to apply the necessary physical pressure to the roller brush. The second elastic element 32 ensures controllable and uniform pressure, fully simulating the "pressure friction" effect of manual scrubbing while avoiding excessive wear on the roller brush. In this invention, the self-cleaning process of the cleaning cylinder relies entirely on the mechanical structure linkage and the rotation of the roller brush itself to achieve physical scraping, without consuming additional water resources, electricity, or chemical cleaning agents, eliminating water waste and the risk of chemical pollution, in line with the concept of green cleaning. In particular, the double roller design, combined with an adjustable spacing structure and a press-down handle assembly, allows the device to reach deep into the sink and corner areas. The self-cleaning function acts directly on the cleaning cylinder body, ensuring that the core cleaning component (roller brush) always maintains a highly efficient working state, thereby improving the overall cleaning effect and durability of stubborn stains on the sink walls.

[0061] This embodiment achieves brush spacing adjustment and self-cleaning pressure control through mechanical linkage, solving the problem of dirt accumulation in cloth-type brushes while ensuring effective cleaning of deep corners and edges of the sink. Those skilled in the art can adjust the elastic element parameters, wedge angle, or drive mechanism type based on the above teachings.

Claims

1. A kitchen cleaning device, characterized in that... include: Base (10); The roller assembly, located below the base (10), includes two side-by-side first roller supports (21) and second roller supports (22), as well as a first cleaning cylinder (251) on the first roller support (21) and a second cleaning cylinder (252) on the second roller support (22). The first cleaning cylinder (251) and the second cleaning cylinder (252) can be driven by a drive mechanism to rotate around their own axes. The first roller support (21) and the second roller support (22) are connected by a sliding limiting structure, so that the first roller support (21) and the second roller support (22) can move closer to or further away from each other in the horizontal direction. The first elastic element (31) acts between the first roller support (21) and the second roller support (22), so that the first roller support (21) and the second roller support (22) always tend to move closer to each other; The handle assembly includes a handle (40) that is rod-shaped as a whole and rocker arm assemblies respectively disposed at two ends of the handle (40). Each rocker arm assembly includes a first rocker arm (41) and a second rocker arm (42). The first end of the first rocker arm (41) and the first end of the second rocker arm (42) of the same rocker arm assembly are rotatably connected and rotatably connected to the corresponding ends of the handle (40). The second ends of the first rocker arm (41) and the second ends of the second rocker arm (42) of the same rocker arm assembly are rotatably connected to the corresponding ends of the first roller bracket (21) and the corresponding ends of the second roller bracket (22), respectively. The scraper assembly includes a scraper blade (50) and a second elastic member (32). The scraper blade (50) is disposed on a corresponding first roller support (21) or second roller support (22) in a manner that allows it to move closer to or further away from the cleaning cylinder. The second elastic member (32) acts on the scraper blade (50) and causes the scraper blade (50) to always tend to move away from the corresponding cleaning cylinder. A force is applied to the handle (40) near the base (10). The process of the handle (40) approaching the base (10) has at least a first action process and a second action process. In the first action process, the first roller bracket (21) and the second roller bracket (22) move away from each other relative to each other against the elastic force of the first elastic member (31). In the second action process, the handle (40) acts on the scraper assembly so that the scraper (50) overcomes the elastic force of the second elastic member (32) and abuts against the first cleaning cylinder (251) or the second cleaning cylinder (252).

2. The kitchen cleaning device according to claim 1, characterized in that: The first roller bracket (21) is fixed relative to the base (10), while the second roller bracket (22) can move closer to or further away from the first roller bracket (21). The scraper assembly is disposed on the first roller bracket (21).

3. The kitchen cleaning device according to claim 2, characterized in that: The first roller support (21) includes a horizontally extending first connecting plate (211), and the second roller support (22) includes a horizontally extending second connecting plate (221). One of the first connecting plate (211) and the second connecting plate (221) is provided with a horizontally extending limiting slide (2210), and the other is slidably disposed in the limiting slide (2210).

4. The kitchen cleaning device according to claim 3, characterized in that: The second connecting plate (221) is provided with the limiting slide (2210), and the top of the second connecting plate (221) is also provided with a limiting groove (22110) that communicates with the limiting slide (2210). The extending direction of the limiting groove (22110) is perpendicular to the length direction of the second cleaning cylinder (252). The first connecting plate (211) has a first positioning post (2111) that extends upward and is slidably limited in the limiting groove (22110).

5. The kitchen cleaning device according to claim 4, characterized in that: The second connecting plate (221) includes a connecting plate body (2211) and a cover plate (2212) detachably connected to the top of the connecting plate body (2211). The cover plate (2212) and the connecting plate body (2211) form the limiting slide (2210) by a gap in the vertical direction. The top of the first positioning post (2111) is fixedly connected to the bottom of the base (10).

6. The kitchen cleaning device according to claim 3, characterized in that: The first roller support (21) further includes a first vertical plate (212) extending downward from the first connecting plate (211), and the first vertical plate (212) has a strip-shaped relief opening (2120) extending in a direction parallel to the axis of the first cleaning cylinder (251), and the scraper (50) is slidably disposed in the strip-shaped relief opening (2120); Also includes: The second elastic element (32) acts on the scraper (50), thereby causing the scraper (50) to always tend to move away from the first cleaning cylinder (251); A linkage rod (51) is movably mounted on the first connecting plate (211). The lower end of the linkage rod (51) is slidably engaged with the side of the scraper (50) away from the first cleaning cylinder (251) through a first wedge structure (521). During the second action, the linkage rod (51) is driven to move downward by the handle (40) and acts on the scraper (50) during the downward movement, thereby driving the scraper (50) to act on the first cleaning cylinder (251).

7. The kitchen cleaning device according to claim 6, characterized in that: The second elastic element (32) is a U-shaped spring sheet, one side of which is connected to the first vertical plate (212) and the other side is connected to the scraper plate (50).

8. The kitchen cleaning device according to claim 6, characterized in that: The roller assembly further includes a first roller connecting frame (23) and a second roller connecting frame (24). The two ends of the first cleaning cylinder (251) are rotatably mounted on the first roller connecting frame (23), and the two ends of the second cleaning cylinder (252) are rotatably mounted on the second roller connecting frame (24). The two ends of the first roller connecting frame (23) are movably mounted vertically on the two ends of the first roller support (21) through a first floating connecting component, and the two ends of the second roller connecting frame (24) are movably mounted vertically on the two ends of the second roller support (22) through a second floating connecting component.

9. The kitchen cleaning device according to claim 8, characterized in that: The first roller support (21) includes two first end walls (214) opposite each other in the length direction of the first roller support (21). Each of the two first end walls (214) has a vertically arranged first limiting groove (2140) on its opposite side wall. Each of the two ends of the first roller connecting frame (23) has an outwardly protruding first slider (232). The two first sliders (232) slide up and down and are constrained in the corresponding first limiting groove (2140). A third elastic member (33) is also provided between the first roller support (21) and the first roller connecting frame (23). Under the action of the third elastic member (33), the first roller connecting frame (23) always has a tendency to move downward away from the first roller support (21). The second roller support (22) includes two opposing second end walls (222) along the length of the second roller support (22). Each of the opposing side walls of the two second end walls (222) has a vertically arranged second limiting groove (2220). Each of the two ends of the second roller connecting frame (24) has an outwardly protruding second slider (242). The two second sliders (242) slide up and down and are constrained in the corresponding second limiting groove (2220). A fourth elastic member (34) is also provided between the second roller support (22) and the second roller connecting frame (24). Under the action of the fourth elastic member (34), the second roller connecting frame (24) always has a tendency to move downward away from the second roller support (22).

10. The kitchen cleaning device according to claim 9, characterized in that: The scraper (50) and the first roller connecting frame (23) are slidably engaged by the second wedge structure (522). During the process of the scraper (50) moving toward the first cleaning cylinder (251), the scraper (50) drives the first roller connecting frame (23) and the first cleaning cylinder (251) provided on the first roller connecting frame (23) to move upward through the wedge structure.

11. The kitchen cleaning device according to claim 10, characterized in that: The bottom side of both ends of the first roller bracket (21) has a first support protrusion (213) extending downward, and the bottom side of both ends of the second roller bracket (22) has a second support protrusion (223) extending downward. During the second operation, the first cleaning cylinder (251) provided on the first roller connecting frame (23) moves upward and is higher than the first support protrusion (213).

12. The kitchen cleaning apparatus according to any one of claims 1 to 11, characterized in that: The first elastic element (31) is a tension spring, and the two ends of the tension spring are respectively connected to the first roller bracket (21) and the second roller bracket (22).

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