A surface cleaner with high cleaning efficiency

Abstract

The application discloses a surface cleaning device, and belongs to the technical field of cleaning equipment. The surface cleaning device comprises a floor brush module, a cleaning assembly, a dirt scraping module, a liquid supply module, a dirt suction module and a driving module. The cleaning assembly comprises a first roller, a second roller, a support frame and a detachable cleaning belt sleeved on the first roller and the second roller and following the movement of the first roller. The diameter of the first roller is larger than that of the second roller. The support frame comprises an upper frame body and a lower frame body. A tensioning surface for tightening the cleaning belt is arranged on the lower frame body. The tensioning surface is arranged in parallel with the lower outer surface of the first roller and the second roller. The lower surface of the lower frame body is arranged in an upward inclination relative to the tensioning surface, so that the part of the cleaning belt between the bottom of the first roller and the bottom of the second roller is kept in a tensioning state, avoiding the collapse of the part of the cleaning belt in contact with the surface to be cleaned. The wiping force of the cleaning belt on the surface to be cleaned can be reasonably increased, which is beneficial to improving the wiping effect of the cleaning belt and thus improving the user experience.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning equipment, in particular to a wet surface cleaning machine. BACKGROUND

[0002] In recent years, some intelligent cleaning equipment is more and more widely applied in daily life, and various cleaning equipment brings great convenience to the life of users. The surface cleaning machine is a commonly used cleaning equipment,

[0003] The wet surface cleaning equipment is suitable for cleaning hard floor surfaces, such as ceramic tile, hardwood floor and soft carpet surface, etc. When the wet surface cleaning equipment cleans the surface to be cleaned, the cleaning liquid is first delivered to the cleaning module, and the cleaning liquid is applied to the surface to be cleaned through the cleaning module, and when the cleaning module moves relative to the surface to be cleaned, the bristles on the cleaning roller realize the cleaning of the surface to be cleaned. At present, the single-roller surface cleaning machine is more commonly used in the market, which generally includes a cleaning roller, and the cleaning roller is provided with bristles. Since the cleaning roller is cylindrical, the bristles are in line contact with the surface to be cleaned. Therefore, the contact area of the cleaning roller with the surface to be cleaned per unit time is limited, and therefore the cleaning efficiency is relatively low. In order to increase the cleaning area of the cleaning roller and improve the cleaning efficiency, double-roller floor cleaning machines appear in the market, but the double-roller floor cleaning machine has a complex structure, and the automatic cleaning of the cleaning roller is more cumbersome. Moreover, whether it is a single-roller wet surface cleaning equipment or a double-roller wet surface cleaning equipment, since the cleaning roller is circular, it is inevitable that the cleaning roller will be entangled with hair and other objects when cleaning the ground and other environments. In addition, the larger the diameter of the circular cleaning roller, the more difficult it is to clean the corners.

[0004] Later, in order to improve the cleaning efficiency, the cleaning module of the surface cleaning machine was improved, and the cleaning module of the cleaning belt was driven by the first roller and the second roller, which greatly increased the contact area of the cleaning module with the surface to be cleaned and improved the cleaning efficiency. However, the cleaning belt is prone to slipping under the drive of the first roller, and in addition, the cleaning belt lacks pressure in contact with the surface to be cleaned between the first roller and the second roller, especially when the first roller and the second roller have a certain spacing, which will cause insufficient cleaning force in the middle of the cleaning belt. In addition, the cleaning belt is prone to relaxation due to gravity after a long period of use. SUMMARY

[0005] In order to solve the above-mentioned shortcomings and deficiencies in the prior art, the present application provides a surface cleaning machine, which is provided with a tensioning structure on the cleaning assembly, so that the substantial contact area of the cleaning belt with the surface to be cleaned is large, the cleaning efficiency is high, the cleaning effect is good, and the cleaning belt is not easy to entangle with hair.

[0006] In order to achieve the above technical purposes, the surface cleaning machine with high cleaning efficiency provided by the present application comprises a floor brush module for cleaning a surface to be cleaned, a cavity is arranged on the floor brush module, and the cavity is used for accommodating a cleaning assembly; a dirt scraping module is used for scraping off dirt liquid or dirt on the cleaning assembly; a liquid supply module is used for supplying liquid for cleaning to the cleaning assembly; a dirt suction module is used for sucking the scraped-off dirt liquid or dirt into a dirt collecting barrel through a dirt suction port; and a driving module is arranged on the floor brush module and is used for driving the cleaning assembly to rotate; the cleaning assembly comprises a first roller, a second roller, a support frame used for mounting the first roller and the second roller, and a detachable cleaning belt sleeved on the first roller and the second roller and following the movement of the first roller, the diameter of the first roller is larger than the diameter of the second roller, the support frame comprises an upper frame body and a lower frame body, a tensioning surface used for tightening the cleaning belt is arranged on the lower frame body, the tensioning surface is arranged in parallel with the lower outer circumferential surface of the first roller and the second roller, and the lower surface of the lower frame body is arranged in an upward inclination relative to the tensioning surface.

[0007] Preferably, a plurality of longitudinal support ribs are arranged on the lower surface of the lower frame body, and the top of the plurality of support ribs forms the tensioning surface.

[0008] Preferably, the upper surface of the upper frame body is uniformly provided with a plurality of longitudinal support ribs, and the height of the support ribs gradually decreases from the first roller to the second roller.

[0009] Preferably, the tensioning surface is in interference fit with the cleaning belt, and the interference amount of the tensioning surface is γ, 0mm≤γ≤1mm.

[0010] Preferably, the top of the plurality of support ribs forms a flexible support surface, and the flexible support surface is parallel to the upper outer circumferential surface of the first roller and the second roller.

[0011] Preferably, the flexible support surface has a gap δ with the upper outer circumferential surface, and 0mm≤δ≤1mm.

[0012] Preferably, the width of the support rib gradually increases from the first roller to the second roller.

[0013] Preferably, the first roller is provided with a first anti-skid groove, the second roller is provided with a second anti-skid groove, the lower surface of the upper frame body is provided with a downward protruding positioning protrusion, the first anti-skid groove, the positioning protrusion and the second anti-skid groove are arranged on the same straight line, and the bottom surface of the first anti-skid groove is arranged higher than the bottom surface of the second anti-skid groove.

[0014] Preferably, the longitudinal section of the anti-skid groove is trapezoidal or a square with a rounded corner.

[0015] Preferably, the inner wall of the cleaning belt is provided with anti-skid protrusions which cooperate with anti-skid grooves to enable the cleaning belt to follow the movement of the first roller and drive the second roller to rotate, and the longitudinal section of the anti-skid protrusions is triangular or trapezoidal.

[0016] After the above technical solution is adopted, the present application has the following advantages:

[0017] 1. The cleaning assembly comprises a first roller, a second roller, a support frame for mounting the first roller and the second roller, and a detachable cleaning belt sleeved on the first roller and the second roller and following the movement of the first roller, the diameter of the first roller is larger than that of the second roller, so that the thickness of the cleaning assembly is different, and in particular, the second roller with a smaller diameter is arranged at the front side of the cleaning assembly, which facilitates the cleaning of some corners by the cleaning assembly and facilitates the cleaning assembly to be inserted into the bed or sofa for cleaning; the support frame comprises an upper frame body and a lower frame body, and the lower frame body is provided with a tensioning surface for tightening the cleaning belt, and the tensioning surface is arranged in parallel with the lower outer surface of the first roller and the second roller, which not only increases the area of the cleaning belt in effective contact with the surface to be cleaned, but also ensures that the cleaning belt is in good contact with the surface to be cleaned under the action of the tensioning surface, and the contact area is greatly increased, thereby greatly improving the cleaning efficiency and improving the cleaning effect, and the lower surface of the lower frame body is inclined upward relative to the tensioning surface, so that the tensioning surface plays a good tensioning role, and it is also convenient to mount the first roller and the second roller, and the first roller can better drive the second roller and the cleaning belt to perform cleaning work, the cleaning belt is not easy to slip, and it will not be hindered by the tensioning surface, so that the cleaning work is more efficient.

[0018] 2、By setting a plurality of longitudinally arranged support ribs on the lower surface of the lower frame body, the top of the plurality of support ribs forms a tension surface, so that the contact between the cleaning belt and the surface to be cleaned is good under the action of the tension surface, and the contact area is greatly increased. At the same time, the tension surface is composed of support ribs distributed at intervals, so that the contact between the cleaning belt and the surface to be cleaned has a certain buffer space, and there is no hard collision. Therefore, the wear of the cleaning belt is reduced, the actual contact area of the cleaning belt is increased without affecting the service life of the cleaning belt, and the cleaning efficiency is improved. At the same time, the presence of the support ribs makes it easier to detach the cleaning belt when it needs to be cleaned. By interference fit between the tension surface and the cleaning belt, the interference amount of the tension surface is γ, and γ satisfies 0mm≤γ≤1mm. In addition to the friction force provided by the first roller and the second roller, the tension surface provides sufficient friction force for the contact between the cleaning belt and the surface to be cleaned. The friction force of the relatively weak part of the cleaning belt in contact with the surface to be cleaned is increased, thereby increasing the actual contact area between the cleaning belt and the surface to be cleaned, improving the cleaning efficiency, and ensuring the service life of the cleaning belt. At the same time, when the cleaning belt is detached, the discontinuous surface contact between the support ribs and the cleaning belt also makes it easy to detach the cleaning belt from the first roller and the second roller.

[0019] When γ is greater than 1mm, the interference amount between the tension surface and the surface to be cleaned is large, which makes the friction force between the cleaning belt and the surface to be cleaned too large, resulting in wear of the cleaning belt and low service life.

[0020] When γ is less than 0mm, the contact between the tension surface and the surface to be cleaned is insufficient, so the friction force between the cleaning belt and the surface to be cleaned is insufficient, the cleaning force of the cleaning belt is not enough, the cleaning efficiency is low, and in addition, solid particles are easily introduced between the tension surface and the cleaning belt, causing poor operation or wear of the cleaning belt, reducing its service life.

[0021] 3、By uniformly distributing a plurality of longitudinally arranged upper support ribs on the upper surface of the upper frame body, the height of the upper support ribs gradually decreases from the first roller to the second roller, further improving the tension of the cleaning belt. This further ensures the contact force between the cleaning belt and the surface to be cleaned during operation, without affecting the movement of the cleaning belt following the first roller and the second roller, avoiding the phenomenon of cleaning belt slipping or separating from the first roller or the second roller due to the top of the cleaning belt collapsing, thereby improving the cleaning efficiency and improving the cleaning effect.

[0022] 4、By forming a flexible support surface on the top of the support ribs of the plurality of upper shelf bodies, the flexible support surface is parallel to the upper external tangent surface of the first roller and the second roller, so that the upper shelf body and the cleaning belt are not in complete close contact, and the problem of the cleaning belt being pinched by the support ribs of the upper shelf body does not occur. The flexible support surface has a gap δ with the upper external tangent surface, and 0mm≤δ≤1mm, which not only ensures the support of the support ribs of the upper shelf body on the cleaning belt, so that the cleaning belt does not collapse, but also prevents the cleaning belt from being worn by the contact of the support ribs of the upper shelf body, and in addition, makes the disassembly of the cleaning belt easier.

[0023] When γ is greater than 1mm, the gap between the flexible support surface and the cleaning belt is larger, so that the support force of the upper support ribs is insufficient, the cleaning belt is prone to collapse, which affects the driving effect of the first roller and / or the second roller on the cleaning belt, resulting in slipping, even relative movement, low cleaning efficiency, and affecting the cleaning force.

[0024] When γ is less than 0mm, the flexible support surface is interference fit with the cleaning belt, the cleaning belt will be too tight, or constantly pushed up by the upper support ribs, which is prone to cause the problem of pinching the belt, if the interference amount exceeds the interference amount between the tensioning surface formed by the lower support ribs and the cleaning belt, which further affects the contact between the cleaning belt and the surface to be cleaned, and further causes poor operation, not only causing wear of the cleaning belt and reducing its service life, but also reducing the cleaning efficiency.

[0025] 5、By gradually increasing the width of the support ribs from the first roller to the second roller, the contact area between the cleaning belt and the support frame is appropriate, the cleaning belt is less worn during the cleaning operation, and the support frame provides better support through the support ribs, ensuring the contact between the cleaning belt and the support frame, the first roller and the second roller, so that the cleaning belt does not slip during the cleaning operation.

[0026] 6、By providing a first anti-slip groove on the first roller and a second anti-slip groove on the second roller, and a downward protruding positioning protrusion on the lower surface of the upper shelf body, the first anti-slip groove, the positioning protrusion and the second anti-slip groove are arranged on the same straight line, and the bottom surface of the first anti-slip groove is higher than the bottom surface of the second anti-slip groove, which not only allows the cleaning belt to be driven by the first roller and the driving wheel smoothly, and the installation and disassembly of the cleaning belt is relatively easy, without one-to-one alignment, but also makes the installation of the cleaning belt easier. The longitudinal section of the anti-slip groove is trapezoidal or square with rounded corners, which makes the installation or disassembly of the cleaning belt have a guiding effect, making the disassembly more convenient and fast.

[0027] 7. By setting anti-skid protrusions on the inner wall of the cleaning belt, the anti-skid protrusions cooperate with anti-skid grooves to make the cleaning belt follow the movement of the first roller and drive the second roller to rotate, the longitudinal section of the anti-skid protrusions is triangular or trapezoidal, which not only ensures the good cooperation of the anti-skid protrusions and the anti-skid grooves and the smooth running of the cleaning belt driven by the first roller and the second roller, but also ensures the guiding effect of disassembling the cleaning belt, so that the disassembly of the cleaning belt is easier. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 Schematic view of the surface cleaning device according to embodiment one;

[0029] Figure 2 Schematic view of the internal structure of the floor brush of the surface cleaning device according to embodiment one;

[0030] Figure 3 Exploded view of part of the cleaning assembly of the surface cleaning device according to embodiment one;

[0031] Figure 4 Exploded view of the support frame of the surface cleaning device according to embodiment one;

[0032] Figure 5 Cooperation view of the frame body part of the support frame and the sliding frame of the surface cleaning device according to embodiment one;

[0033] Figure 6 Cooperation view of the cleaning belt, the first roller, the second roller and the support frame of the surface cleaning device according to embodiment one;

[0034] Figure 7 Cooperation view of the auxiliary frame body and the lock block of the support frame of the surface cleaning device according to embodiment one;

[0035] Figure 8 Structure view of the cleaning belt of the surface cleaning device according to embodiment one;

[0036] Figure 9 Schematic view of the body of the surface cleaning device according to embodiment one;

[0037] Figure 10 Exploded view of part of the cleaning assembly of the surface cleaning device according to embodiment two;

[0038] Figure 11 Schematic view of the frame body part of the surface cleaning device according to embodiment two;

[0039] Figure 12 Cooperation view of the first roller, the second roller and the support frame of the surface cleaning device according to embodiment two;

[0040] Figure 13The schematic diagram of the cooperation relationship of the cleaning belt, the first roller, the second roller and the support frame of the surface cleaning device of Example Three.

[0041] The reference signs in the drawings are as follows:

[0042] 100 - floor brush module, 110 - cavity, 120 - suction port, 130 - scraping strip, 200 - liquid supply module, 210 - liquid supply tank, 300 - suction module, 310 - suction barrel, 311 - barrel body, 312 - barrel cover, 320 - suction motor, 330 - suction channel, 400 - cleaning assembly, 410 - first roller, 411 - first anti-skid groove, 412 - driving shaft cylinder, 413 - driving rubber sleeve, 420 - second roller, 421 - shaft hole, 422 - second anti-skid groove, 423 - driven shaft cylinder, 424 - driven rubber sleeve, 430 - cleaning belt, 431 - soft rubber inner layer, 432 - velvet outer layer, 433 - anti-skid protrusion, 440 - support frame, 4401 - upper frame body, 4402 - lower frame body, 441 - frame body part, 4411 - avoiding groove, 4412 - support rib, 4413 - tensioning surface, 4415 - flexible support surface, 4416 - accommodating groove, 442 - auxiliary frame body, 4421 - lug, 4422 - shaft column, 443 - sliding frame, 4431 - button, 4432 - protruding buckle, 4433 - clasp, 444 - lock buckle, 445 - lock block, 4451 - boss, 4461 - first spring, 4462 - second spring, 4463 - third spring, 450 - first side support, 451 - cantilever, 452 - clamping block, 453 - magnet, 454 - support shaft, 460 - second side support, 461 - second transmission head, 462 - rotating shaft, 470 - upper surface, 480 - lower surface, 500 - machine body, 600 - battery. DETAILED DESCRIPTION

[0043] The application will be further described below in conjunction with the drawings and specific examples. It should be understood that the following "upper", "lower", "left", "right", "longitudinal", "transverse", "inner", "outer", "vertical", "horizontal", "top", "bottom" and other words indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices / components must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the application.

[0044] Example One

[0045] As Figures 1 to 9As shown, as a surface cleaning machine with high cleaning efficiency provided by the present application, it comprises a brush module 100 for cleaning a surface to be cleaned, a cleaning assembly 400, a dirt scraping module, a dirt suction module 300, a driving module and a liquid supply module 200. The brush module 100 is provided with a cavity 110 for accommodating the cleaning assembly 400, and a dirt suction port 120 is arranged in the cavity 110. In the embodiment, the driving module comprises a driving motor (not shown in the figure) for driving the cleaning assembly 400 to rotate, and the driving motor is arranged on the brush module 100. The cleaning assembly 400 comprises a first roller 410, a second roller 420, a support frame 440 for mounting the first roller 410 and the second roller 420, and a detachable cleaning belt 430 sleeved on the first roller 410 and the second roller 420 and following the movement of the first roller 410. The dirt scraping module comprises a scraping strip 130 for scraping the dirt liquid or dirt on the cleaning belt 430 of the cleaning assembly 400. The liquid supply module 200 is used for providing the cleaning assembly 400 with cleaning liquid. The dirt suction module 300 is used for sucking the scraped dirt liquid or dirt into a dirt collecting bucket 310 through the dirt suction port 120. The diameter of the first roller 410 is greater than that of the second roller 420, so that the thickness of the cleaning assembly 400 is different. In particular, the second roller 420 with smaller diameter is arranged at the front side of the cleaning assembly 400, which facilitates the cleaning of some corners by the cleaning assembly 400 and facilitates the cleaning assembly 400 to extend into the bed or sofa for cleaning. The first roller 410 and the second roller 420 are rotatably arranged in parallel on the support frame 440, and the first roller 410 is located behind the second roller 420. The cleaning belt 430 is detachably sleeved on the outside of the first roller 410 and the second roller 420 and follows the movement of the first roller 410.The support frame 440 comprises an upper frame body 4401 and a lower frame body 4402, which are integrally formed in this embodiment. The lower frame body 4402 is provided with a tension surface 4413 for tensioning the cleaning belt 430. The tension surface 4413 is arranged in parallel with the lower outer surface of the first roller 410 and the second roller 420. This not only increases the area of the cleaning belt 430 in contact with the surface to be cleaned, but also ensures that the cleaning belt 430 is in good contact with the surface to be cleaned under the action of the tension surface 4413, and the contact area is greatly increased, thereby greatly improving the cleaning efficiency and cleaning effect. The lower surface 480 of the lower frame body 4402 is inclined upward relative to the tension surface 4413. The support surface of the support frame 440 for the cleaning belt 430 is increased, especially the contact area between the tension surface 4413 and the cleaning belt 430 is increased, so that the tension surface 4413 has a good tensioning effect on the cleaning belt 430. At the same time, it is convenient to install the first roller 410 and the second roller 420, and the first roller 410 drives the second roller 420 and the cleaning belt 430 to better perform the cleaning work. The cleaning belt 430 is not easy to slip and is not hindered in movement by the tension surface 4413, so that the cleaning work is more efficient. At the same time, when the cleaning belt needs to be disassembled, the space for moving or retracting the support frame is large, so that the first roller and the second roller can be close to each other to release the contact with the cleaning belt, thereby facilitating the disassembly of the cleaning belt.

[0046] In this embodiment, as shown in FIG. 4, the first roller 410 and the second roller 420 are arranged in parallel and are rotatable about their respective rotation axes. The first roller 410 is arranged on the left side of the cleaning device 400, and the second roller 420 is arranged on the right side of the cleaning device 400. The first roller 410 and the second roller 420 are arranged in parallel and are rotatable about their respective rotation axes. The first roller 410 is arranged on the left side of the cleaning device 400, and the second roller 420 is arranged on the right side of the cleaning device 400. Figures 3 to 6As shown, the lower surface 480 of the lower frame body 4402 is provided with a plurality of longitudinally arranged support ribs 4412, which are arranged downwardly protruding, the top of the support ribs 4412 is located on the same plane to form a tension surface 4413, the upper surface 470 of the upper frame body 4401 and the lower surface 480 of the lower frame body are arranged in parallel, and the upper surface 470 of the upper frame body 4401 is also arranged obliquely relative to the tension surface 4413, and it does not contact the cleaning belt and has a certain gap, which ensures that the cleaning belt can have sufficient space to absorb liquid, so that the cleaning belt can be fully soaked and wet, although the gravity of the cleaning belt increases after being soaked, but under the tension of the tension surface 4413, it will not contact the upper surface of the upper frame of the support frame, reducing the friction between the cleaning belt and the support frame, reducing the probability of cleaning belt wear. And because the plurality of support ribs 4412 form the tension surface 4413, and the tension surface 4413 is arranged in parallel with the lower outer surface P2 of the first roller 410 and the second roller 420, so that under the action of the tension surface 4413, the cleaning belt 430 is in good contact with the surface to be cleaned, and the contact area between the two is increased, and at the same time, the tension surface 4413 is composed of the support ribs 4412 arranged at intervals, so that the contact between the cleaning belt 430 and the surface to be cleaned is in a local or intermittent surface contact state, and the cleaning belt and the surface to be cleaned have a certain buffer when they contact, and they will not harden, especially when encountering hard objects or uneven cleaning surfaces, the cleaning belt can be slightly deformed with the hard object, therefore, the wear of the cleaning belt is reduced, the actual contact area between the cleaning belt and the surface to be cleaned is increased without affecting the service life of the cleaning belt, and the cleaning efficiency is improved. At the same time, the presence of the support ribs enables the cleaning belt at this position to better contact and clean the surface to be cleaned, especially when dealing with local stubborn stains, and for general surfaces to be cleaned and non-support rib contact cleaning belt parts, the cleaning belt has a gap with the support frame, so that the cleaning belt can effectively absorb the dirty liquid on the surface to be cleaned. In addition, the presence of the support ribs enables the support frame and the cleaning belt to be in local contact, and when the cleaning belt needs to be disassembled and cleaned, the support frame can be retracted and moved, so that the first roller and the second roller move relatively, and the cleaning belt is relaxed. Therefore, the resistance of the cleaning belt during disassembly is smaller, and it is easy to disassemble.

[0047] In this embodiment, as shown in Figure 2 , the cavity 110 is arranged at the front side of the brush module 100, and the bottom and front side of the cavity 110 have openings. The cleaning assembly 400 is detachably transversely mounted in the cavity 110, so that the front side and bottom of the cleaning belt 430 are exposed outside the cavity, can smoothly contact the surface to be cleaned, and the shafts of the first roller 410 and the second roller 420 are arranged in parallel. In combination with Figure 2 , the dirty suction port 120 is arranged at the rear side of the cavity 110, and the dirty suction port 120 communicates with the cavity 110. As shown in Figure 8As shown, the cleaning belt 430 includes a soft rubber inner layer 431 and a velvet outer layer 432, and the velvet outer layer 432 is arranged on the outer surface of the soft rubber inner layer 431 by adhesion. The scraping module includes a scraping strip 130 arranged above the suction port 120, the scraping strip 130 protrudes from the rear wall of the cavity to the cavity 110, and is in interference contact with the velvet outer layer 432 of the cleaning belt 430. The scraping strip 130 is arranged in parallel with the first roller, and the soft rubber inner layer 431 of the cleaning belt 430 is arranged in close contact with the first roller 410, so that the scraping strip 130 is in contact with the part of the cleaning belt 430 which is taut by the first roller 410, thereby increasing the scraping force of the scraping strip 130 on the cleaning belt 430, improving the scraping effect of the scraping strip 130 on the cleaning belt 430, and the scraping strip is arranged at least not lower than the central axis of the first roller, so that the scraping effect is better. The tensioning surface 4413 is arranged in parallel with the lower outer tangent P2 of the first roller and the second roller, and the tensioning surface 4413 is in interference fit with the cleaning belt 430. The interference amount of the tensioning surface 4413 is γ, and the interference amount satisfies 0mm≤γ≤1mm, and in the embodiment, γ is 0.2mm, so that the velvet outer layer of the cleaning belt 430 is deformed, so that the velvet outer layer of the cleaning belt is pressed on the surface to be cleaned, which not only ensures the normal rotation of the cleaning belt driven by the first roller, but also ensures that the tensioning surface 4413 provides sufficient friction force for the cleaning belt in contact with the surface to be cleaned in addition to the friction force provided by the first roller 410 and the second roller 420, thereby increasing the actual contact area between the cleaning belt and the surface to be cleaned, improving the cleaning efficiency, improving the cleaning effect, improving the cleaning efficiency, and ensuring the service life of the cleaning belt. At the same time, when the cleaning belt is disassembled, since the supporting rib and the cleaning belt are discontinuous surface contact, the cleaning belt is also easy to disassemble from the first roller and the second roller.The tensioning surface 4413 is horizontally arranged with the lower outer surface P2 of the first roller and the second roller, the height of the support ribs 4412 protruding downward relative to the bottom surface of the lower frame body 4402 decreases from back to front, so that the tensioning surface 4413 is a horizontal surface, the tensioning surface 4413 shown by the straight line P3 is lower than and arranged in parallel with the lower outer surface P2, so that the soft rubber inner layer of the cleaning belt is attached to the outer surface of the first roller and the second roller and moves under the driving of the first roller, thereby driving the second roller to move, and the part between the first roller and the second roller is pressed against the surface to be cleaned by the tensioning surface, so as to continuously scrub the surface to be cleaned. In the embodiment, the ratio of the outer diameter of the first roller 410 to the outer diameter of the second roller 420 is 1.5, the support ribs 4412 are arranged along the front-back direction and the protruding height thereof relative to the bottom surface of the lower frame body 4402 decreases from back to front, so that the cleaning assembly has a shape of being large at the back and small at the front, thereby ensuring that the front end of the cleaning assembly can be deep into some narrow gaps for cleaning work. In addition, there is generally more dust and less stubborn stains in such gaps, so that the front end of the cleaning assembly can be used for cleaning, which saves labor and resources. In the embodiment, the width of the support ribs 4412 gradually increases from the first roller to the second roller, that is, the width of the rib close to the second roller is greater than that of the rib close to the first roller, so that the contact area of the tensioning surface close to the first roller and the tensioning surface close to the second roller with the cleaning belt gradually increases. Since the second roller is in front and the first roller is at the back, the cleaning belt close to the second roller first contacts the surface to be cleaned, so that the contact area of the cleaning belt with the surface to be cleaned increases. For cleaning a large area of the surface to be cleaned, the wiping force of the cleaning belt on the surface to be cleaned increases, which is especially beneficial to improve the wiping effect of the cleaning belt on stubborn stains. Such a structure has both wiping force and large wiping area, greatly improves the cleaning efficiency and cleaning effect, and is beneficial to improve the user experience. In addition, the support ribs on the lower frame body form the tensioning surface, and the two are discontinuous surface contact, which can reduce the contact area between the cleaning belt and the support frame, facilitate the reduction of the adsorption force between the cleaning belt and the support frame when the cleaning belt is removed, and is beneficial to reduce the difficulty of disassembly of the cleaning belt.

[0048] In combination Figure 3The two ends of the support frame 440 are respectively provided with a first side support 450 and a second side support 460. The first side support 450 is provided with a cantilever 451 extending rearward relative to the first roller 410. The cantilever 451 and the floor brush module 100 are provided with a buckling structure for mounting the cleaning assembly 400 at the cavity 110. In the embodiment, the first side support 450 is arranged at the right end of the support frame 440 and is perpendicular to the support frame 440. The second side support 460 is arranged at the left end of the support frame 440. The buckling structure is arranged on the left side surface of the cantilever 451. The buckling structure includes a buckling block 452 and a magnet 453 arranged in the buckling block 452. The right side of the floor brush module 100 is provided with a groove for inserting the buckling block 452. An iron block matched with the magnet 453 is arranged in the groove.

[0049] The driving assembly and the first roller 410 are provided with a transmission module. The second side support 460 is provided with a rotating shaft 462 inserted into the first roller 410. The driving assembly drives the first roller 410 to rotate around the rotating shaft 462 through the transmission module. In the embodiment, the transmission module includes a first transmission head arranged in the cavity 110 and a second transmission head 461 arranged at the second side support 460. The first transmission head and the second transmission head 461 are detachably and transmissionally matched. The rotating shaft 462 is fixed to the second transmission head 461. The first side support 450 is provided with a support shaft 454 matched with the first roller 410. The second transmission head 461 is inserted into the left end of the first roller 410. The rotating shaft 462 is matched with the shaft hole of the first roller 410. The support shaft 454 is inserted into the right end of the first roller 410.

[0050] When the cleaning assembly 400 is mounted at the cavity 110, the first transmission head is inserted into the second transmission head 461. The buckling block 452 is inserted into the groove. The magnet 453 is attracted to the iron block. In the embodiment, the driving assembly includes a driving motor and a transmission box provided with an output shaft. The motor shaft of the driving motor extends into the transmission box as a power shaft. The first transmission head is sleeved on the output shaft of the transmission box. The driving motor drives the first transmission head to rotate through the transmission box. The first transmission head drives the first roller 410 to rotate around the rotating shaft 462 through the second transmission head 461. The first roller 410 drives the cleaning belt 430 to move. The cleaning belt 430 drives the second roller 420 to rotate.

[0051] In combination with Figure 4 , Figure 5 , Figure 7The upper frame body 4401 is a frame structure with open front side and lower part, the lower frame body 4402 is a frame structure with open upper part and front side, the lower part openings of the two are butted and connected as a whole, so that the upper frame body 4401 and the lower frame body 4402 are connected as a whole to form a frame body part 441, the frame body part 441 is provided with a containing groove 4416, the containing groove 4416 is an opening groove formed at the front side of the frame body part 441 by the lower part opening of the upper frame body and the upper part opening of the lower frame body, the containing groove 4416 is provided with a linkage structure for driving the second roller 420 away from or close to the first roller 410, the second roller 420 away from the first roller 410 makes the cleaning belt 430 be tensioned by the first roller 410 and the second roller 420, and the second roller 420 close to the first roller 410 makes the cleaning belt 430 be loosened by the first roller 410 and the second roller 420. In the embodiment, the front side of the containing groove 4416 is open, the support frame 440 further comprises a secondary frame body 442, the secondary frame body 442 is provided at the front side of the frame body part 441 and is symmetrically provided with two, the two secondary frame bodies 442 can move forward and backward relative to the frame body part 441, and the linkage structure is provided between the frame body part 441 and the secondary frame body 442. The ends of the two secondary frame bodies 442 away from each other are provided with lugs 4421 protruding forward, the two lugs 4421 are both provided with rotatable shaft columns 4422 through bearings, the two ends of the second roller 420 are provided with shaft holes 421 matched with the shaft columns 4422, and the two shaft columns 4422 are inserted into the shaft holes 421 at the corresponding ends of the second roller 420, so that the axial ends of the second roller 420 are rotatably arranged on the secondary frame bodies 442, and the second roller 420 can rotate around the shaft columns 4422.

[0052] The linkage structure comprises a sliding frame 443 provided in the frame body part 441 and a lock catch 444 provided in position, the sliding frame 443 is movably arranged in the frame body part 441 and has one end protruding out of the support frame 440 to form a button 4431 and the other end provided with a protruding catch 4432 matched with the lock catch 444, a first spring 4461 is arranged between the sliding frame 443 and the frame body part 441 in the axial direction along the left-right direction, one end of the first spring 4461 is in contact with the frame body part 441 and the other end is in contact with the sliding frame 443. A second spring 4462 is arranged between the frame body part 441 and the secondary frame body 442 and passes through the sliding frame 443, the axial direction of the second spring 4462 is arranged along the front-rear direction, the front end is in contact with the secondary frame body 442, and the rear end is in contact with the frame body part 441. The secondary frame body 442 is provided with a lock block 445 movably arranged therein, one side of the lock block 445 is provided with a protruding boss 4451, the front side of the sliding frame 443 is provided with a buckle 4433 matched with the boss 4451, and a third spring 4463 is arranged between the secondary frame body 442 and the lock block 445 and pushes the lock block 445 towards the buckle 4433, the axial direction of the third spring 4463 is arranged along the left-right direction, one end of the third spring 4463 is in contact with the inner wall of the secondary frame body 442, and the other end is in contact with the lock block 445.

[0053] When the support frame 440 needs to be folded, force is applied to the second roller 420 to move the sub-frame body 442 towards the frame body 441 against the elastic force of the second spring 4462. When the sub-frame body 442 is moved back to the position, the lock block 445 is moved towards the buckle 4433 under the resistance of the third spring 4463, so that the protrusion 4451 of the lock block 445 is buckled with the buckle 4433. At the same time, the lock 444 locks the protrusion 4432 at the end of the sliding frame 443, so that the sliding frame 443 is in a position state where the protrusion 4451 and the buckle 4433 are stably buckled. The buckling of the protrusion 4451 and the buckle 4433 makes the sub-frame body 442 receive a limiting force, so that the support frame 440 is in a folded state. At this time, the cleaning belt 430 is loosened from the first roller 410 and the second roller 420, and the cleaning belt 430 can be easily removed from the first roller 410 and the second roller 420.

[0054] When the support frame 440 needs to be unfolded, press the button 4431, and the sliding frame 443 is forced to move towards the lock 444 against the elastic force of the first spring 4461, so that the lock 444 first loosens the protrusion 4432. Then, the first spring 4461 drives the sliding frame 443 to move away from the lock 444, so that the buckle 4433 is separated from the protrusion 4451 of the lock block 445. The lock 444 is unlocked with the protrusion 4451. Then, the second spring 4462 in the restored deformation drives the sub-frame body 442 to move forward and away from the frame body 441. When the sub-frame body 442 moves forward to the position, the support frame 440 is in an unfolded state. At this time, the cleaning belt 430 is stretched and tensioned by the first roller 410 and the second roller 420, so that the cleaning belt 430 can effectively wipe the surface to be cleaned.

[0055] In combination Figure 9 The surface cleaning device provided by the embodiment further comprises a machine body 500, and the bottom end of the machine body 500 is pivotally connected to the rear side of the floor brush module 100. In combination Figure 10 The liquid supply module 200 comprises a liquid supply tank 210, a liquid supply pipeline (not shown in the figure), a liquid supply pump (not shown in the figure) and a liquid spraying member (not shown in the figure). The liquid supply tank 210 is detachably installed on the rear side of the machine body 500. One end of the liquid supply pipeline is detachably connected to the liquid supply tank 210, and the other end is connected to the liquid spraying member. The liquid supply pump is arranged on the liquid supply pipeline. The liquid spraying member is preferably arranged on the rear side of the cavity 110 and above the scraping strip 130. The liquid spraying member is provided with a spray hole (not shown in the figure) facing the cleaning belt 430. When the liquid supply pump is working, the liquid in the liquid supply tank 210 flows to the liquid spraying member through the liquid supply pipeline and is sprayed out of the spray hole to the cleaning belt 430, so that the cleaning belt 430 is wetted by absorbing the liquid, and the cleaning belt 430 can wetly wipe the surface to be cleaned.

[0056] In combination Figure 9The suction module 300 comprises a dirt collecting bucket 310 and a dirt suction motor 320. The dirt collecting bucket 310 comprises a bucket body 311 and a bucket cover 312. The dirt collecting bucket 310 is detachably installed on the front side of the machine body 500. The bottom end of the machine body 500 and the floor brush module 100 are provided with a dirt suction channel 330 for connecting the dirt collecting bucket 310 and the dirt suction opening 120. One end of the dirt suction channel 330 is detachably connected to the dirt collecting bucket 310, and the other end is connected to the dirt suction opening 120. When the dirt suction motor 320 is working, a dirt collecting airflow is formed from the dirt suction opening 120, through the dirt suction channel 330 and into the dirt collecting bucket 310. Dirt such as dirt, dirty liquid and dirt scraped off by the scraper 130 from the bottom of the floor brush module 100 and the cleaning belt 430 are collected into the dirt collecting bucket 310 under the action of the dirt collecting airflow. In this embodiment, the dirt suction motor 320 is arranged in the machine body 500. The machine body 500 is also provided with a battery 600 for supplying power to various electrical elements.

[0057] When the device is working, the driving assembly drives the first roller 410 to rotate through the transmission module. The first roller 410 drives the cleaning belt 430 to move, and the cleaning belt 430 drives the second roller 420 to rotate. The cleaning belt 430 wipes the surface to be cleaned. When it is necessary to replace the cleaning belt 430, the cleaning assembly 400 is detached from the floor brush module 100, and then the second roller 420 is forced to move the sub-frame body 442 towards the frame body 441 to change the support frame 440 from the expanded state to the folded state. The center distance between the first roller 410 and the second roller 420 is reduced, and the cleaning belt 430 is loosened from the first roller 410 and the second roller 420. The cleaning belt 430 has a gap between the main roller and the second roller, which facilitates the removal of the cleaning belt 430 from the main roller and the second roller. A new cleaning belt 430 is sleeved on the outside of the main roller and the second roller, and then the button 4431 is pressed to move the sub-frame body 442 away from the frame body 441 to change the support frame 440 from the folded state to the expanded state. The center distance between the first roller 410 and the second roller 420 is increased, and the main roller and the second roller are expanded to tension the cleaning belt 430, so that the first roller 410 can smoothly drive the cleaning belt 430 to move.

[0058] In this embodiment, as shown in Figure 3 and Figure 5As shown, the first roller 410 is further provided with a first anti-skid groove 411, the second roller 420 is provided with a second anti-skid groove 422, the upper surface 470 of the upper frame body 4401 is provided with a downward recessed avoiding groove 4411, the first anti-skid groove 411, the avoiding groove 4411 and the second anti-skid groove are arranged on the same straight line, and the bottom surface of the first anti-skid groove 411 is higher than the bottom surface of the second anti-skid groove 422. Not only can the cleaning belt be well driven by the first roller and the driving wheel, but also the installation and disassembly of the cleaning belt are relatively easy, and it is only necessary to align once to install in place, so the installation of the cleaning belt is more easy. Moreover, the longitudinal section of the anti-skid groove is trapezoidal or square with rounded corners, and such a structure makes the installation or disassembly of the cleaning belt have a guiding effect, and the disassembly is more convenient and fast. The longitudinal section of the first anti-skid groove 411 and the second anti-skid groove 422 is trapezoidal or square with rounded corners. The inner wall of the cleaning belt 430 is provided with an anti-skid protrusion 433, the anti-skid protrusion 433 cooperates with the first anti-skid groove 411 and the second anti-skid groove 422 to make the cleaning belt 430 move with the first roller 410 and drive the second roller 420 to rotate, and the longitudinal section of the anti-skid protrusion 433 is triangular or trapezoidal. It not only ensures the good cooperation of the anti-skid protrusion 433 and the anti-skid groove, but also makes the cleaning belt run more smoothly under the driving of the first roller and the second roller without slipping, and also ensures the guiding effect of disassembling the cleaning belt, so that the disassembly of the cleaning belt is more easy. In the embodiment, the first anti-skid groove and the second anti-skid groove are both trapezoidal with rounded corners, two first anti-skid grooves 411 are arranged along the circumference of the first roller, and two second anti-skid grooves are also arranged along the circumference of the second roller, as shown in Figure 8 As shown, the anti-skid protrusion 433 is two circles of protruding ribs arranged along the inner wall of the cleaning belt, corresponding to the first anti-skid groove 411 and the second anti-skid groove 422 arranged on the first roller and the second roller respectively, and the longitudinal section of the anti-skid protrusion 433 is trapezoidal with rounded corners.

[0059] Of course, it can be understood that a plurality of supporting protrusions or supporting blocks can also be arranged on the lower surface of the lower frame body, the bottom surfaces of the supporting protrusions or supporting blocks are located on the same plane, and the bottom surfaces form a tensioning surface; or as long as the bottom surfaces of the supporting structures on the lower frame body are located on the same plane and the bottom surfaces of the supporting structures are parallel to the lower outer circumferences of the driving roller and the driven roller, the width of the supporting rib can be consistent from front to back in the direction from the first roller to the second roller, as long as a plurality of supporting structures exist, so that these supporting structures form a tensioning surface, which can support and resist the cleaning belt, and there are also intermittent non-contact surfaces, which locally increase the friction between the cleaning belt and the surface to be cleaned, thereby improving the cleaning effect. Such technical solutions that do not deviate from the concept of the present application are also within the protection scope of the present application, and will not be illustrated one by one here.

[0060] It can be understood that the outer diameter ratio R1:R2 between the driving roller and the driven roller can also be set to 1.6, 1.7, 1.8, 1.9, 2, and other reasonable sizes.

[0061] It can be understood that the interference amount γ between the tension surface 4413 and the cleaning mop 430 can also be set to 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.6mm, 0.7mm, 0.8mm, 1mm, and other reasonable sizes.

[0062] It can be understood that the tension surface 4413 can also be coincident with the lower outer tangent surface P2.

[0063] It can be understood that the specific number of the first anti-skid groove 411 and the second anti-skid groove 422 is not limited to two as described above and shown in the drawings, but can also be set to one, three, and other reasonable numbers. Correspondingly, the number of the anti-skid protrusions 433 on the inner wall of the cleaning mop 430 is consistent with the number of the first and second anti-skid grooves.

[0064] It can be understood that the axial cross-sectional shape of the first anti-skid groove 411, the second anti-skid groove 422, and the anti-skid protrusion 433 is not limited to the trapezoidal shape as described above, but can also be set to a square, a rectangle, a V shape, and other reasonable shapes.

[0065] It can be understood that the avoidance groove 4411 on the bottom surface of the lower frame body 4402 of the support frame is preferably higher than the anti-skid protrusion 433.

[0066] Example Two

[0067] The difference between this embodiment and Example One is the structure of the support frame.

[0068] As the surface cleaning machine with high cleaning efficiency described in the present application, such as Figures 10 to 12As shown, the upper surface 470 of the upper shelf body 4401 is also uniformly provided with a plurality of longitudinally arranged support ribs 4412, that is, a plurality of lengthwise spaced support ribs 4412 are also arranged on the upper surface 470 of the upper shelf body 4401 of the support frame 440, so as to avoid the situation that the cleaning belt 430 running to the upper part collapses due to the water absorption when the liquid spraying structure sprays too much water. The height of the support ribs 4412 gradually decreases from the first roller 410 to the second roller 420, that is, the support ribs 4412 extend in the front-rear direction and the protruding height of the upper surface 470 of the upper shelf body 4401 of the support frame 440 gradually decreases from the rear to the front. A plurality of support ribs 4412 are also arranged on the lower surface 480 of the lower shelf body 4402, and the plurality of support ribs 4412 form a tension surface 4413, and the tension surface 4413 is in interference with the inner wall of the cleaning belt. In this embodiment, the cleaning assembly 400 is provided with an upper outer tangent surface P1 tangent to the first roller 410 and the second roller 420 at the same time, the top of the plurality of support ribs 4412 forms a flexible support surface 4415, the flexible support surface 4415 is parallel to the upper outer tangent surface P1 of the first roller 410 and the second roller 420, and the flexible support surface 4415 has a gap δ with the upper outer tangent surface P1, and 0mm≤δ≤1mm. So that the upper shelf body and the cleaning belt are not completely tightly continuous contact, and the problem that the cleaning belt is jammed by the support ribs of the upper shelf body will not occur, while ensuring the effective contact of the cleaning belt with the first roller and the second roller, so that the cleaning belt runs more smoothly without jamming. It is ensured that the support ribs of the upper shelf body support the cleaning belt, so that the cleaning belt will not collapse and hinder the movement of the cleaning belt, and at the same time, when the liquid spraying mechanism sprays liquid, the pile on the cleaning belt is soaked, and the gap ensures that the cleaning belt still has enough space to absorb liquid, and continues to absorb liquid. Even if the cleaning belt absorbs more liquid, the cleaning belt is at most in contact with the support ribs, so that the wet cleaning belt is continuously tensioned by the support ribs, and the cleaning belt continues to move under the drive of the first roller. The wet cleaning belt can gradually soak itself during movement, so that there is enough liquid to soak the stains when it comes into contact with the surface to be cleaned, especially stubborn stains. It is ensured that the cleaning belt is soaked and does not collapse to affect the operation, and the contact area between the cleaning belt and the support ribs of the upper shelf body is small, so that the cleaning belt runs more smoothly and stably, and the service life of the cleaning belt is guaranteed.

[0069] Specifically, due to the different outer diameters of the first roller 410 and the second roller 420, the lower outer cutting surface P2 is high in the back and low in the front, and the flexible support surface 4415 formed by the top surface of the support rib 4412 of the upper frame body 4401 is a slope with the back high and the front low as shown by the straight line P4 in the figure. Since the top side inner wall of the cleaning belt 430 is substantially coincident with the upper outer cutting surface P1, the inner wall of the cleaning belt 430 is in contact with the upper outer cutting surface P1 of the first roller 410 and the second roller 420, and under the driving of the first roller, the cleaning belt moves with the first roller and drives the second roller to rotate, so that the cleaning belt is tensioned between the first roller and the second roller, and the gap δ between the flexible support surface 4415 and the cleaning belt 430 is the gap between the flexible support surface 4415 and the upper outer cutting surface P2. In this embodiment, the gap δ between the flexible support surface 4415 and the cleaning belt 430 is 0 mm, and the interference γ between the tensioning surface 4413 and the cleaning belt is 0.2. Such cooperation ensures that the upper frame body is in contact with the cleaning belt during the movement of the cleaning belt with the first roller, ensures the smooth movement of the cleaning belt driven by the first roller, reduces the contact friction between the cleaning belt and the support rib on the upper frame body, avoids excessive friction caused by the excessive contact area between the support frame and the cleaning belt, which damages the cleaning belt and reduces the service life. When there is foreign matter above the cleaning belt or the cleaning belt absorbs a lot of water, the support rib on the upper surface of the upper frame body provides good support for the cleaning belt. At the same time, the support rib on the lower surface of the lower frame body forms a tensioning surface, so that the cleaning belt can still be tensioned and have sufficient friction with the surface to be cleaned, so that it can run smoothly and clean effectively. At the same time, the gap between the cleaning belt and the upper surface of the upper frame body plays a role in elastic adjustment of the impact of foreign matter, and the cleaning belt will not be damaged or cut.

[0070] Of course, it can be understood that the flexible support surface of the upper frame body and the cleaning belt can also have a certain gap, that is, the flexible support surface formed by the top of the support rib of the upper frame body is lower than the upper outer cutting surface of the first roller and the second roller, and the cleaning belt still has the support of the support rib after absorbing water, and the gap between them is 0≤δ≤1, which is less wear on the cleaning belt, and the cleaning belt can still fully absorb water with its outer layer of cloth. This technical solution which does not depart from the concept of the present application is also within the protection scope of the present application, and will not be illustrated one by one here.

[0071] It can be understood that the avoiding groove 4411 on the top surface of the upper frame body 4401 of the support frame is preferably lower than the anti-skid protrusion 433.

[0072] It can be understood that the gap δ between the flexible support surface 4415 and the cleaning mop 430 can also be set to 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.7 mm, 0.8 mm, 1 mm, etc.

[0073] It is understandable that the specific structure of the cleaning mop 430 is not limited to that described above and shown in the attached diagram. Other types of mops with different structures may also be used, such as a soft rubber inner layer with a fluffy outer layer or bristles.

[0074] The other structures of Embodiment 2 are the same as those of Embodiment 1, and will not be described in detail here.

[0075] Example 3

[0076] The difference between this embodiment and Embodiment 1 is the structure of the support frame.

[0077] like Figure 13 As shown, the outer diameters of the first roller 410 and the second roller 420 are different. The lower outer tangent surface P2 is horizontally arranged relative to the horizontal plane, while the lower surface 480 of the lower frame 4402 of the support frame 440 is inclined to the lower outer tangent surface P2. The soft rubber inner layer 431 of the cleaning belt 430 is on the same plane as the lower outer tangent surface P2. The lower outer tangent surface P2 of the first roller and the second roller is parallel to the tension surface 4413, and the tension surface 4413 formed by the lower frame 4402 and the support ribs 4412 is lower than the lower outer tangent surface P2. Therefore, the tension surface 4413 formed by the lower frame 4402 and the support ribs 4412 is an interference fit with the cleaning belt, and the interference amount γ is 0.5mm. In this embodiment, the top surface of the support ribs 4412 of the upper frame 4401 forms a flexible support surface 4415, which is an inclined surface inclined from back to front as shown by the straight line P4 in the figure. Since the inner top wall of the cleaning belt 430 is basically aligned with the upper outer tangential surface P1, the soft rubber inner layer 431 of the cleaning belt contacts the upper outer tangential surface P1 of the first roller 410 and the second roller 420. Driven by the first roller, the cleaning belt moves with the first roller and drives the second roller to rotate, thereby making the cleaning belt tensioned outside the first roller 410 and the second roller 420. The distance between the flexible support surface 4415 and the upper outer tangential surface P1 is the gap δ between the flexible support surface 4415 and the cleaning belt 430. In this embodiment, δ is about 0.5 mm, so that the cleaning belt moves with the first roller. During the process, the upper frame does not come into contact with the cleaning belt, ensuring smooth operation of the cleaning belt driven by the first roller. This reduces contact friction between the cleaning belt and the supporting ribs on the upper frame, preventing damage to the cleaning belt and reducing its service life due to friction. When there are foreign objects above the cleaning belt or the cleaning belt absorbs a lot of water, the supporting ribs on the upper surface of the upper frame provide excellent support for the cleaning belt, allowing it to remain taut and run smoothly. At the same time, the gap between the upper frame and the supporting ribs provides elastic adjustment against impacts from foreign objects, preventing damage or tearing. Furthermore, the reasonable interference fit of the tensioning surface ensures appropriate contact force between the cleaning belt and the surface to be cleaned. This ensures the cleaning belt can be taut and follow the movement of the first roller while maintaining friction between the cleaning belt and the surface to be cleaned, thereby increasing the cleaning area, improving the cleaning effect, and enhancing cleaning efficiency.

[0078] The other structures of the second embodiment are the same as those of the first embodiment, and thus will not be described again.

[0079] In addition to the preferred embodiments described above, the present application has other embodiments, and those skilled in the art can make various changes and modifications to the present application according to the present application, and can also combine the above embodiments, as long as they do not deviate from the spirit of the present application, they should belong to the scope defined in the claims of the present application.

Claims

1. A surface cleaning machine of high cleaning efficiency, characterized in that, The cleaning device comprises a floor brush module for cleaning a surface to be cleaned, a cavity is formed on the floor brush module for accommodating a cleaning assembly; a scraping module for scraping the dirty liquid or dirt on the cleaning assembly; a liquid supply module for supplying the cleaning assembly with cleaning liquid; a suction module for sucking the scraped dirty liquid or dirt into a dirt collecting barrel through a suction port; a driving module arranged on the floor brush module for driving the cleaning assembly to rotate; The cleaning assembly comprises a first roller, a second roller, a support frame for mounting the first roller and the second roller, and a detachable cleaning belt sleeved on the first roller and the second roller and following the movement of the first roller, the diameter of the first roller is larger than that of the second roller, the support frame comprises an upper frame body and a lower frame body, a tensioning surface for tightening the cleaning belt is arranged on the lower frame body, the tensioning surface is arranged in parallel with the lower outer surface of the first roller and the second roller, and the lower surface of the lower frame body is inclined upward relative to the tensioning surface.

2. The surface cleaner according to claim 1, wherein A plurality of longitudinally arranged support ribs are arranged on the lower surface of the lower frame body, and the plurality of support ribs form the tensioning surface.

3. The surface cleaner according to claim 1, wherein The upper surface of the upper frame body is uniformly provided with a plurality of longitudinally arranged support ribs, and the height of the support ribs gradually decreases from the first roller to the second roller.

4. The surface cleaner according to claim 1, wherein The tensioning surface is in interference fit with the cleaning belt, and the interference amount of the tensioning surface is γ, 0mm≤γ≤1mm.

5. The surface cleaner of claim 3, wherein the cleaning efficiency is high. The top of the plurality of support ribs forms a flexible support surface, and the flexible support surface is parallel to the upper outer surface of the first roller and the second roller.

6. The surface cleaner of claim 5, wherein the cleaning efficiency is high. The flexible support surface and the upper outer surface have a gap δ, and 0mm≤δ≤1mm.

7. The surface cleaner of claim 2 or 3, wherein the cleaning efficiency is high. The width of the support rib gradually increases from the first roller to the second roller.

8. The surface cleaner of claim 1, wherein: The first roller is provided with a first anti-skid groove, the second roller is provided with a second anti-skid groove, the upper surface of the upper frame body is provided with a downward recessed positioning groove, the first anti-skid groove, the positioning groove and the second anti-skid groove are arranged on the same straight line, and the bottom surface of the first anti-skid groove is higher than that of the second anti-skid groove.

9. The surface cleaner of claim 8, wherein the cleaning efficiency is high. The longitudinal section of the anti-skid groove is trapezoidal or notched round cornered square.

10. The surface cleaner of claim 8, wherein the cleaning efficiency is high. The inner wall of the cleaning belt is provided with anti-skid protrusions, the anti-skid protrusions are matched with the first anti-skid groove and the second anti-skid groove respectively, so that the cleaning belt follows the movement of the first roller and drives the second roller to rotate, and the longitudinal section of the anti-skid protrusion is triangular or trapezoidal.

Images