Surface cleaning device with scraping assembly

Abstract

The utility model discloses a surface cleaning device with a scraping component, which belongs to the technical field of cleaning equipment and comprises a machine body, a ground brush, a liquid supply component and a dirt suction component, the ground brush is provided with a dirt suction port, a cleaning part and the scraping component, the liquid supply component comprises a water purification tank and a water distribution part, and the dirt suction component comprises a sewage bucket and a fan. The scraping assembly is arranged between the water distribution piece and the dirt suction opening and comprises a scraping plate and a comb rack which are attached in an up-down parallel mode, the comb rack is provided with a plurality of comb teeth distributed at intervals in the axial direction of the cleaning piece, the tooth tips of the comb teeth protrude forwards relative to the scraping plate, and the protruding distance does not exceed 3 mm. A liquid flow filling area opened towards the dirt suction opening is defined by the scraper and the two adjacent comb teeth, and the width of the liquid flow filling area is gradually increased from back to front. No gap exists between the scraping plate and the comb rack, dirty liquid passes through the liquid flow filling area under the suction effect and then directly flows towards the dirt suction opening, and the situations that peculiar smell is generated and bacteria are bred due to the fact that the dirty liquid is left between the scraping plate and the comb rack are avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a surface cleaning device with a scraping assembly. Background Art

[0002] With the development of technology, there are more and more types of surface cleaning equipment, and surface cleaning equipment has gradually entered people's family life and become a common household appliance for cleaning the floor. The existing handheld surface cleaning machine generally includes a body, a floor brush, a liquid supply assembly and a sewage suction assembly. The floor brush is provided with a sewage suction port, a cleaning member driven by a motor and a scraping member for scraping and squeezing the cleaning member. The liquid supply assembly supplies liquid to the cleaning member so that the cleaning member can be wetted by absorbing liquid and then wipe the surface to be cleaned. The fan provides suction to generate negative pressure in the sewage bucket and form a sewage suction airflow flowing from the sewage suction port into the sewage bucket. The dirt scraped out of the cleaning member by the scraping member can flow into the sewage bucket along with the sewage suction airflow. The sewage and dirt adhered to the cleaning member are scraped out by the scraping member, thereby ensuring the cleaning ability of the cleaning member for the surface to be cleaned.

[0003] The invention patent with the publication number of CN113796789B discloses a cleaning base for a surface cleaning device. The cleaning base is provided with a cleaning roller, a scraping roller device and a sewage box. The scraping roller device includes a first scraping member and a second scraping member which are arranged in parallel and spaced apart along the rotation direction of the cleaning roller. There is a spacing area between the first scraping member and the second scraping member, and the sewage box is located below the spacing area. Among them, a plurality of tooth-shaped protrusions are arranged on the front side of the first scraping member, and the protrusions can remove solid garbage such as hair and flocs adhered to the outer peripheral surface of the cleaning roller. The second scraping member is arranged as a scraping strip. When the cleaning roller works, the first scraping member first scrapes off the solid garbage and a small part of the sewage adhered to the cleaning roller, and then the second scraping member scrapes off most of the sewage adhered to the cleaning roller. The fixed garbage and sewage scraped off the cleaning roller can fall into the sewage box through the spacing area, and the dirt falling into the sewage box can be sucked into the sewage recovery box under the suction of the suction device. Since there is a spacing area between the first scraping member and the second scraping member, when the scraped sewage is more, the sewage can fall into the sewage box under the action of its own gravity and overcome its own surface tension. When the scraped sewage is less, the gravity of the sewage cannot overcome its own surface tension, so that the dirt is likely to stay in the spacing area, and the dirt staying in the spacing area is likely to generate peculiar smell or breed bacteria, which is not conducive to improving the user experience. Content of the Utility Model

[0004] In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the utility model provides a surface cleaning device with a scraping assembly, in which there is no spacing gap between the scraper and the comb teeth. Under the suction action, the dirty liquid flows directly toward the sewage suction port after passing through the liquid flow filling area, thereby avoiding the dirty liquid from being retained between the scraper and the comb teeth, thereby avoiding the generation of odor and breeding of bacteria due to the retention of dirty liquid.

[0005] In order to achieve the above technical objectives, the utility model provides a surface cleaning device with a scraping assembly, including a body, a floor brush, a liquid supply assembly and a dirt suction assembly. The upper end of the body is provided with a gripping handle, and the lower end of the body is pivotally connected to the floor brush. The floor brush is provided with a dirt suction port, a cleaning member and a scraping assembly for scraping the cleaning member. The liquid supply assembly includes a clean water tank and a water dividing member corresponding to the cleaning member. The dirt suction assembly includes a sewage bucket that can be connected to the dirt suction port and a fan arranged above the sewage bucket. The scraping assembly is arranged between the water dividing member and the dirt suction port. The scraping assembly includes a scraper and a comb tooth bar that are parallel to each other in the upper and lower parts. The comb tooth bar has a plurality of comb teeth that are spaced apart along the axial direction of the cleaning member. The tooth tips of the comb teeth protrude forward relative to the scraper and the protruding distance does not exceed 3 mm. The scraper and two adjacent comb teeth form a liquid flow filling area that is open to the dirt suction port, and the width of the liquid flow filling area gradually increases from the back to the front.

[0006] Preferably, the side walls of the comb teeth are inclined surfaces, convex arc surfaces, or concave arc surfaces, so that the width of the comb teeth gradually decreases from the back to the front.

[0007] Preferably, the tooth tips of the comb teeth are rounded structures.

[0008] Preferably, the scraper includes a scraping and squeezing portion and a first fixing portion distributed front and back, and the liquid flow filling area is located below the scraping and squeezing portion.

[0009] Preferably, the comb tooth bar comprises a combing portion and a second fixing portion distributed front and back, the comb teeth are located in the front of the combing portion, and the combing portion is located below the scraping portion.

[0010] Preferably, the scraper and the comb teeth are both metal parts, the second fixing part is located below the first fixing part and the two are tightly fitted.

[0011] Preferably, the scraper and the comb teeth are integrally formed, and the first fixing portion and the second fixing portion are integrated into one body.

[0012] Preferably, the thickness of the scraping portion is not greater than the thickness of the combing portion; and / or the thickness of the comb teeth is greater than or equal to the thickness of the combing portion.

[0013] Preferably, the floor brush is provided with a floor scraper located below the dirt suction port and parallel to the scraping assembly, the floor scraper is provided with a scraping portion and a retaining rib protruding downward relative to the bottom surface of the floor brush and parallel to each other, the retaining rib is located behind the scraping portion and a spacing groove is provided between the two.

[0014] Preferably, the front surface of the scraping part has a plurality of ribs spaced along the length direction of the floor squeegee, and the extending direction of the ribs is inclined with respect to the length direction of the floor squeegee, and the distance between adjacent ribs gradually increases from the middle part of the floor brush to the left and right sides.

[0015] After adopting the above technical solution, the utility model has the following advantages:

[0016] 1. For the surface cleaning device provided by the utility model, the scraping assembly adopts a structure combined with a scraper and a comb rack. The scraper and the comb rack are arranged in parallel and in contact with each other up and down. The tips of the teeth on the comb rack protrude forward relative to the scraper, so that the tips of the teeth can extend into the outer layer of the cleaning member to comb the fluff. When the cleaning member rotates, it first contacts the comb rack and then contacts the scraper. When the cleaning member contacts the comb rack, the teeth on the comb rack can strip the hair wound on the cleaning member, scrape off the dirt adhered to the cleaning member, and squeeze out a small amount of the liquid adsorbed on the cleaning member. Even if there is hair, dirt, liquid, etc. that are not completely stripped, when the cleaning member continues to rotate and contacts the scraper, the scraper can perform secondary scraping on the cleaning member. Due to the parallel and contacting arrangement of the scraper and the comb rack up and down, the liquid discharged from the cleaning member after two scrapings converges to form a larger liquid flow. Since the width of the liquid flow filling area gradually increases from back to front, and since the fluff on the outer layer of the cleaning member will extend into the liquid flow filling area, the water pressure in the liquid flow filling area increases. The discharged liquid is split into multiple strands and flows downward toward the sewage suction port through the liquid flow filling area under the suction of the fan. The liquid flowing through the liquid flow filling area can wash part of the fluff, and can also wash away the dirt such as hair and flocs stripped from the comb teeth, ensuring the dirt stripping effect of the comb teeth on the cleaning member, and thus ensuring the wiping effect of the cleaning member on the surface to be cleaned, greatly reducing the frequency of the user manually cleaning the scraping assembly, and improving the user experience. Since there is no gap between the scraper and the comb rack, the liquid directly flows toward the sewage suction port after passing through the liquid flow filling area under the suction effect, avoiding the retention of the liquid between the scraper and the comb rack, thereby avoiding the situation of generating peculiar smell and breeding bacteria due to the retention of the liquid.

[0017] The distance that the tip of the tooth of the comb rack protrudes forward relative to the scraper does not exceed 3 mm. By reasonably setting the protruding distance of the tooth tip, on the one hand, the tip of the tooth of the comb rack can effectively extend into the fluff on the outer layer of the cleaning member for cleaning, and on the other hand, the front edge of the scraper can effectively scrape the outer layer of the cleaning member, ensuring the scraping effect of the comb rack and the scraper on the cleaning member.

[0018] 2. The side wall of the comb tooth can be set as an inclined surface, a convex arc surface, or a concave arc surface. By reasonably setting the specific shape of the two side walls of the comb tooth, the width of the comb tooth gradually decreases from back to front, so that the width of the liquid flow filling area can gradually increase from back to front.

[0019] 3. The tips of the comb teeth are preferably rounded, making the tips of the comb teeth smooth, avoiding the sharp corners of the teeth from snagging the fluff of the cleaning member when scraping and squeezing the cleaning member, which may cause the cleaning member to not rotate smoothly, thus avoiding damage to the cleaning member. The structure of the tooth tips is reasonably set so that the tooth tips of the comb teeth can smoothly scrape the fluff of the cleaning member while ensuring the integrity of the fluff on the outer layer of the cleaning member, thereby ensuring the wiping ability of the cleaning member.

[0020] 4. The scraper includes a scraping and squeezing part and a first fixing part. The specific structure of the scraper is reasonably set to ensure stable installation of the scraper while enabling the scraping and squeezing part to smoothly scrape and squeeze the cleaning member. The liquid flow filling area is located below the scraping and squeezing part, and the sewage squeezed out of the cleaning member by the scraping and squeezing part can flow downward through the liquid flow filling area.

[0021] 5. The comb tooth bar includes a combing part and a second fixing part. The comb teeth are arranged on the front side of the combing part and below the scraping and squeezing part. The specific structure of the comb tooth bar is reasonably set to ensure stable installation of the comb tooth bar while enabling the tooth tips of the comb teeth to protrude forward beyond the scraping and squeezing part.

[0022] 6. Both the scraper and the comb tooth bar are preferably made of metal parts, which can ensure their strength while minimizing their thickness, enabling them to meet the requirements of scraping and squeezing the cleaning member. The scraper and the comb tooth bar can be formed separately. At this time, the second fixing part is located below the first fixing part and they are closely attached, with no gap between the first fixing part and the second fixing part, so that the sewage squeezed out of the cleaning member can overcome the surface tension of the liquid and flow downward to be pumped away, avoiding the situation where sewage remains between the scraper and the comb tooth bar, resulting in odors and bacteria growth.

[0023] 7. The scraper and the comb teeth can also be integrally formed. At this time, the first fixing part of the scraper and the second fixing part of the comb tooth bar are combined into one body. Integral formation can reasonably reduce the components of the floor brush and eliminate the need to set a positioning and matching structure between them, which helps to improve the assembly efficiency and the structural strength of the scraping assembly.

[0024] 8. The thickness of the scraping and squeezing part is not greater than the thickness of the combing part. The structural strength of the scraping and squeezing part is ensured by its thickness, thus ensuring the scraping and squeezing effect of the scraping and squeezing part on the cleaning member. The thickness of the comb teeth is greater than or equal to the thickness of the combing part to ensure the thickness and structural strength of the comb teeth, thereby ensuring the combing effect of the comb teeth on the cleaning member and avoiding the situation of the comb teeth breaking.

[0025] 9. A floor squeegee parallel to the scraping assembly is arranged below the sewage suction port. The floor squeegee is provided with a scraping part and a retaining rib. The retaining rib is located behind the scraping part and there is a spacer groove between them. When the whole device is placed on the base, the retaining rib abuts against the upper surface of the base near the cleaning tank. By the abutment of the retaining rib and the base, it can avoid the problem that the liquid in the cleaning tank flows out due to the backward turning of the scraping part, and also avoid the problem that the suction intensity decreases due to the backward turning of the scraping part and the liquid in the cleaning tank cannot be pumped dry.

[0026] 10. The front surface of the scraping part is provided with a plurality of convex ribs distributed at intervals, and the extending direction of the convex ribs is inclined with respect to the length direction of the floor squeegee. When the device is working, the scraping part is in full contact with the surface to be cleaned through the convex ribs to ensure the suction intensity of the dirt suction airflow. The convex ribs can also appropriately reduce the contact area between the scraping part and the surface to be cleaned to appropriately reduce the frictional force received by the scraping part, thereby reducing the difficulty for the user to push and pull the body by holding the handle to move the floor brush on the surface to be cleaned. The convex ribs have a guiding effect on the dirt under the suction action, and can better guide the dirt to flow towards the dirt suction port. Description of the Drawings

[0027] Figure 1 It is the overall view of the surface cleaning device in the first embodiment;

[0028] Figure 2 It is the cross-sectional view of the floor brush in the surface cleaning device in the first embodiment along the front-rear direction;

[0029] Figure 3 It is the partial structure diagram of the floor brush in the surface cleaning device in the first embodiment;

[0030] Figure 4 It is the partial structure diagram of the floor brush in the surface cleaning device in the first embodiment;

[0031] Figure 5 It is the cross-sectional view of the scraping assembly in the surface cleaning device in the first embodiment along the front-rear direction;

[0032] Figure 6 It is the structure of the scraping assembly in the surface cleaning device in the first embodiment Figure 1 ;

[0033] Figure 7 It is the structure of the scraping assembly in the surface cleaning device in the first embodiment Figure 2 ;

[0034] Figure 8 It is the partial structure diagram of the scraping assembly in the surface cleaning device in the first embodiment;

[0035] Figure 9 It is the schematic structure diagram of the liquid supply assembly in the surface cleaning device in the first embodiment;

[0036] Figure 10 It is the partial structure diagram of the scraping assembly in the surface cleaning device in the second embodiment;

[0037] Figure 11 It is the partial structure diagram of the scraping assembly in the surface cleaning device in the third embodiment;

[0038] Figure 12 It is the partial structure diagram of the scraping assembly in the surface cleaning device in the fourth embodiment;

[0039] Figure 13 It is a partial structure diagram of the floor brush in the surface cleaning device of the sixth embodiment;

[0040] Figure 14 It is a structure diagram of the base of the sixth embodiment;

[0041] Figure 15 It is a partial structure diagram when the surface cleaning device of the sixth embodiment is placed on the base;

[0042] Figure 16 It is a structure diagram of the floor squeegee in the surface cleaning device of the seventh embodiment.

[0043] In the figure, 100 - body, 110 - vertical rod,

[0044] 200 - floor brush, 210 - dirt suction port, 220 - cleaning part, 221 - roller, 222 - base layer, 223 - fluff, 230 - scraping assembly, 231 - scraper, 2311 - first fixing part, 2312 - scraping and squeezing part, 2313 - first transition step, 232 - comb tooth bar, 2321 - comb tooth, 2322 - second fixing part, 2323 - combing part, 2324 - second transition step, 2325 - transition fillet, 2326 - inclined surface, 2327 - convex arc surface, 2328 - concave arc surface, 233 - liquid flow filling area, 240 - floor brush main body, 250 - front cover, 260 - accommodation cavity, 270 - drive assembly, 280 - floor squeegee, 281 - scraping and sweeping part, 282 - retaining rib, 283 - spacing groove, 284 - rib, 290 - T-shaped joint,

[0045] 300 - liquid supply assembly, 310 - clean water tank, 320 - water distribution part, 321 - liquid outlet hole, 322 - convex edge, 330 - water pump, 340 - heating part,

[0046] 400 - dirt suction assembly, 410 - sewage bucket, 420 - fan, 430 - dirt suction channel,

[0047] 500 - holding handle,

[0048] 600 - control module,

[0049] 700 - base, 710 - cleaning tank, Detailed implementation manners

[0050] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0051] Embodiment 1

[0052] Combination Figures 1 to 9 A surface cleaning device with a scraping assembly provided in a first embodiment of the utility model comprises a body 100, a floor brush 200, a liquid supply assembly 300 and a dirt suction assembly 400. A gripping handle 500 is provided at the upper end of the body 100, and the lower end of the body 100 is pivotally connected to the floor brush 200. The floor brush 200 is provided with a dirt suction port 210, a cleaning member 220 and a scraping assembly 230 for scraping the cleaning member 220. The liquid supply assembly 300 comprises a clean water tank 310 and a water distribution member 320 corresponding to the cleaning member 220. The dirt suction assembly 400 comprises a sewage bucket 410 which can be connected to the sewage suction port 210 and a fan 420 arranged above the sewage bucket 410. The scraping assembly 230 is arranged between the water distribution member 320 and the dirt suction port 210. The scraping assembly 230 includes a scraper 231 and a comb tooth bar 232 which are parallel to each other in the upper and lower parts. The comb tooth bar 232 has a plurality of comb teeth 2321 which are spaced apart along the axial direction of the cleaning member 220. The tooth tips of the comb teeth 2321 protrude forwardly relative to the scraper 231 and the protruding distance does not exceed 3 mm. The scraper 231 and two adjacent comb teeth 2321 form a liquid flow filling area 233 which is open toward the sewage suction port 210, and the width of the liquid flow filling area 233 gradually increases from the back to the front.

[0053] When the cleaning member 220 rotates, it first contacts the comb tooth bar 232 and then contacts the scraper 231. When the cleaning member 220 contacts the comb tooth bar 232, the comb teeth 2321 on the comb tooth bar 232 can strip the hair wrapped around the cleaning member 220, scrape off the dirt adhered to the cleaning member 220, and squeeze out a small amount of the liquid adsorbed on the cleaning member 220. Even if there is still some hair, dirt, and liquid that are not completely stripped, when the cleaning member 220 continues to rotate and contacts the scraper 231, the scraper 231 can perform secondary scraping and squeezing on the cleaning member 220. Since the scraper 231 and the comb tooth bar 232 are arranged in a parallel and attached manner up and down, the liquid squeezed out from the cleaning member 220 after two times of scraping and squeezing converges to form a larger liquid flow. Since the width of the liquid flow filling area 233 gradually increases from the back to the front, and since the fluff on the outer layer of the cleaning member 220 extends into the liquid flow filling area 233, the water pressure in the liquid flow filling area 233 increases somewhat. The liquid squeezed out is split into multiple strands and flows downward toward the sewage suction port 210 through the liquid flow filling area 233 under the suction action of the blower 420. The liquid flowing through the liquid flow filling area 233 can wash part of the fluff 223, and can also wash away the dirt such as the stripped hair and flocs from the comb teeth 2321, ensuring the dirt stripping effect of the comb teeth 2321 on the cleaning member 220, and thus ensuring the wiping effect of the cleaning member 220 on the surface to be cleaned, greatly reducing the frequency of the user manually cleaning the scraping assembly 230, and improving the user experience. Since there is no gap between the scraper 231 and the comb tooth bar 232, the liquid flows directly toward the sewage suction port 210 after passing through the liquid flow filling area 233 under the suction action, avoiding the retention of the liquid between the scraper 231 and the comb tooth bar 232, and thus avoiding the situation of generating peculiar smell and breeding bacteria due to the retention of the liquid.

[0054] Combined Figure 2 、 Figure 3, the floor brush 200 of this embodiment includes a floor brush main body 240 and a front cover 250. The front cover 250 is detachably installed on the front side of the floor brush main body 240. When the front cover 250 is installed on the front side of the floor brush main body 240, the front cover 250 and the floor brush main body 240 cooperate to form a receiving cavity 260, and the cleaning member 220 is detachably installed at the receiving cavity 260. When the cleaning member 220 is installed at the receiving cavity 260, the bottom side of the cleaning member 220 extends downward out of the receiving cavity 260 and is slightly lower than the lower surface of the floor brush 200, so that the bottom side of the cleaning member 220 can contact the surface to be cleaned, so that the cleaning member 220 can effectively wipe the surface to be cleaned. The cleaning member 220 can adopt an existing single-roller brush structure or a double-roller brush structure or a crawler-type mop structure, and there is no excessive limitation here. Specifically, the cleaning member 220 generally includes a roller 221, a base layer 222 provided outside the roller 221, and fluff 223 provided on the outer surface of the base layer 222. The fluff 223 is arranged in clusters and densely distributed. The floor brush 200 is also provided with a driving assembly 270 for driving the cleaning member 220. The driving assembly 270 can be arranged in the floor brush main body 240 or at the receiving cavity 260. The driving assembly 270 arranged at the receiving cavity 260 is received in the cleaning member 220 when the cleaning member 220 is loaded into the receiving cavity 260. The specific structure of the driving assembly 270 can refer to the prior art and will not be elaborated here. The upper end of the fuselage 100 is provided with a vertical rod 110, and the holding handle 500 is arranged at the top of the vertical rod 110. The vertical rod 110 can be fixed to the upper end of the fuselage 100, or the vertical rod 110 can be pivotally connected to the upper end of the fuselage 100 so as to be rotatable back and forth. The lower end of the fuselage 100 and the rear side of the floor brush main body 240 are pivotally connected through a T-shaped joint 290, so that the fuselage 100 can rotate back and forth relative to the floor brush 200 through the T-shaped joint 290.

[0055] The dirt suction port 210 is disposed at the center left and right on the floor brush main body 240 and communicates with the receiving cavity 260. The water dividing member 320 and the scraping assembly 230 are disposed above the dirt suction port 210. The water dividing member 320, the scraping assembly 230, and the dirt suction port 210 are distributed in sequence from top to bottom. A floor scraper 280 is further disposed at the lower edge of the front side of the floor brush main body 240 and below the dirt suction port 210. The length directions of the water dividing member 320, the scraping assembly 230, and the floor scraper 280 are all arranged in the left-right direction, and the axial direction of the cleaning member 220 is also arranged in the left-right direction. A scraping and sweeping portion 281 extending obliquely downward is disposed on the front side of the floor scraper 280. The lower edge of the scraping and sweeping portion 281 is slightly lower than the lower surface of the floor brush 200, that is, the scraping and sweeping portion 281 protrudes downward relative to the bottom surface of the floor brush 200, so that the scraping and sweeping portion 281 can contact the surface to be cleaned, thereby forming a relatively closed space, which can improve the suction effect of the blower 420 on dirt.

[0056] Combined Figure 9, the liquid supply assembly 300 further includes a water pump 330. The clean water tank 310, the water pump 330, and the water distribution member 320 are sequentially distributed from upstream to downstream through a pipeline structure. The water pump 330 is disposed within the floor brush main body 240. The water distribution member 320 is provided with liquid outlet holes 321 facing the cleaning member 220. The water pump 330 can pump the liquid in the clean water tank 310 to the water distribution member 320, and the liquid flowing into the water distribution member 320 is sprayed from the liquid outlet holes 321 onto the cleaning member 220, enabling the cleaning member 220 to absorb and moisten the liquid. The clean water tank 310 can be installed on the body 100, or alternatively, the clean water tank 310 can also be installed on the floor brush 200. As a preferred solution of this embodiment, the water distribution member 320 can adopt a structure in the prior art that divides one inlet water path into multiple outlet water paths in the manner of 2 N (N is a natural number), and of course, other components such as nozzles or spray heads that meet the liquid supply requirements can also be used to replace the water distribution member 320. As an improved solution of this embodiment, the liquid supply assembly 300 can be provided with a heating member 340 upstream of the water distribution member 320. The heating member 340 is used to heat the flowing liquid, and the heated liquid is sprayed from the water distribution member 320. As an alternative solution of this embodiment, the liquid supply assembly 300 can also be provided with a liquid spraying member for spraying the cleaning liquid onto the surface to be cleaned on the basis of the water distribution member 320. The liquid spraying member is connected to the end of the liquid supply pipeline through an electronic control valve. At this time, a ground liquid spraying button for selective operation by the user can be provided on the handle. If the user presses the ground liquid spraying button, the electronic control valve opens, and the liquid supply assembly 300 can spray the cleaning liquid through the liquid spraying member onto the surface to be cleaned.

[0057] Combined with Figure 1 , in this embodiment, the sewage bucket 410 is detachably installed on the body 100, and a sewage suction channel 430 for communicating the sewage suction port 210 with the sewage bucket 410 is provided between the body 100 and the floor brush 200. The sewage bucket 410 can be installed on the front side of the body 100 or on the rear side of the body 100. The specific structure of the sewage bucket 410 can refer to the prior art and will not be elaborated here. The fan 420 can be disposed at the upper end within the body 100, or can be a component of the suction power source assembly. The suction power source assembly is detachably installed on the body 100, and the suction power source assembly detached from the body 100 can be connected to a dust suction accessory for dry dust suction. When the fan 420 operates, it provides suction to form a negative pressure within the sewage bucket 410 and form a sewage suction airflow flowing from the sewage suction port 210 into the sewage bucket 410. The dirt at the sewage suction port 210 can flow into the sewage bucket 410 along with the sewage suction airflow, realizing the collection of dirt.

[0058] In this embodiment, an installation groove extending in the left-right direction and located above the sewage suction port 210 is provided on the front side of the floor brush main body 240. The water distribution member 320 and the scraping assembly 230 are disposed within the installation groove, and the scraping assembly 230 is located at the bottom of the water distribution member 320. Combined withFigures 4 to 8 Specifically, the squeegee 231 includes a first fixing portion 2311 and a squeezing portion 2312 provided on the front side of the first fixing portion 2311. The squeezing portion 2312 is arranged lower than the first fixing portion 2311, so that a first transition step 2313 is formed between the squeezing portion 2312 and the first fixing portion 2311. A convex edge 322 protruding downward is provided on the front side of the water separating member 320. The convex edge 322 abuts against the squeezing portion 2312, and the convex edge 322 and the first transition step 2313 are distributed front and back. The squeegee 231 is limited in the front and back directions by the front and back abutment of the convex edge 322 and the first transition step 2313. The front edge of the squeezing portion 2312 protrudes forward relative to the convex edge 322 by a certain distance, so that the squeezing portion 2312 can effectively squeeze the cleaning member 220. The comb tooth bar 232 includes a second fixing portion 2322 and a combing portion 2323 provided on the front side of the second fixing portion 2322. The combing portion 2323 is arranged lower than the second fixing portion 2322, so that a second transition step 2324 is formed between the combing portion 2323 and the second fixing portion 2322. The second fixing portion 2322 is located at the bottom of the first fixing portion 2311 and they are basically in contact with each other. The combing portion 2323 is located at the bottom of the squeezing portion 2312 and they are basically in contact with each other. The second transition step 2324 is located at the rear side of the first transition step 2313 and they abut against each other front and back. The comb tooth bar 232 is limited in the front and back directions by the front and back abutment of the first transition step 2313 and the second transition step 2324. The comb teeth 2321 are provided at the front part of the combing portion 2323, and the tooth height H of the comb teeth 2321 is less than the front-back width W of the combing portion 2323, so that the strength of the comb teeth 2321 can be increased.

[0059] Combined with Figure 8 In this embodiment, the distance by which the tooth tips of the comb teeth 2321 protrude forward relative to the front edge of the squeegee portion 2312 is ΔC, and ΔC ≤ 3 mm. On the one hand, the tooth tips of the comb teeth 2321 can effectively extend into the fluff 223 on the outer layer of the cleaning member 220 for cleaning. On the other hand, the front edge of the squeegee portion 2312 can effectively squeeze the fluff 223 on the outer layer of the cleaning member 220, ensuring the squeezing effect of the comb tooth bar 232 and the squeegee 231 on the cleaning member 220. Specifically, the tooth tip portion of the comb teeth 2321 protruding forward relative to the squeegee portion 2312 extends into the fluff 223 on the outer layer of the cleaning member 220 but does not contact the base layer 222, avoiding damage to the base layer 222 by the comb teeth 2321 and ensuring the structural integrity of the cleaning member 220. The front side of the squeegee portion 2312 extends into the fluff 223 on the outer layer of the cleaning member 220 and does not contact the base layer 222. The squeegee portion 2312 is in a substantially line contact with the cleaning member 220, so that the squeegee portion 2312 can effectively squeeze the fluff 223 on the outer layer of the cleaning member 220. ΔC can be set to reasonable values such as 1 mm, 1.2 mm, 1.5 mm, 1.8 mm, 2 mm, 2.3 mm, 2.5 mm, 2.7 mm, 3 mm, etc.

[0060] In this embodiment, the comb teeth 2321 are generally trapezoidal, and the width of the comb teeth 2321 gradually decreases from the rear to the front, so that the width of the liquid flow filling area 233 gradually increases from the rear to the front. Specifically, the side walls on the left and right sides of the comb teeth 2321 are generally symmetrically distributed about the central plane P of the comb teeth 2321. Moreover, the left and right side walls of the comb teeth 2321 are inclined surfaces 2326 that are inclined with respect to the central plane P, and the left and right side walls of the comb teeth 2321 have an oblique angle γ with respect to the central plane P, where 40° ≤ γ ≤ 50°. Specifically, the oblique angle γ can be set to reasonable values such as 40°, 41°, 42°, 43°, 44°, 45°, 46°, 47°, 48°, 49°, 50°.

[0061] In order to prevent the fluff 223 of the cleaning member 220 from being snagged by the sharp corners of the tips of the comb teeth, in this embodiment, a transition fillet 2325 is provided between the left end of the front surface of the comb teeth 2321 and the front end of the left inclined surface 2326, and a transition fillet 2325 is also provided between the right end of the front surface of the comb teeth 2321 and the front end of the right inclined surface 2326. Through the two transition fillets 2325, the tips of the comb teeth 2321 are of a rounded structure, avoiding the existence of sharp corners at the tips of the comb teeth 2321 that are likely to snag the fluff 223.

[0062] Since the combing part 2323 is located below the scraping and squeezing part 2312, the liquid flow filling area 233 formed by the cooperation of two adjacent comb teeth 2321 and the scraping and squeezing part 2312 is also located below the scraping and squeezing part 2312, and the front side and the bottom side of the liquid flow filling area 233 are both open, so that the dirt scraped out from the cleaning member 220 can quickly flow towards the dirt suction port 210 under the suction action of the blower 420.

[0063] In this embodiment, the scraper 231 and the comb tooth bar 232 are separately arranged and independently formed. The scraper 231 and the comb tooth bar 232 are preferably made of metal parts, which can minimize the thickness of both while ensuring the structural strength, thereby reasonably controlling the height of the floor brush 200 so that the floor brush 200 can extend into low spaces for cleaning. Specifically, the thickness T1 of the scraping and squeezing part 2312 is slightly less than the thickness T2 of the combing part 2323, and the thickness of the comb teeth 2321 is the same as the thickness T2 of the combing part 2323. As an alternative to this embodiment, the thickness T1 of the scraping and squeezing part 2312 can also be equal to the thickness T2 of the combing part 2323. Additionally, the thickness of the comb teeth 2321 can also be greater than the thickness of the combing part 2323. As an optional solution of this embodiment, the scraper 231 and the comb tooth bar 232 can be made of metal materials such as stainless steel.

[0064] The surface cleaning device is also provided with a control module 600. Electrical components such as the blower 420, the motor of the driving assembly 270, the water pump 330, and the buttons on the body 100 are electrically connected and / or signal-connected to the control module 600.

[0065] When the surface cleaning device is working, the driving component 270 drives the cleaning part 220 to rotate, the liquid supply component 300 supplies cleaning liquid to the cleaning part 220, and the fan 420 provides suction to create a negative pressure in the sewage bucket 410 and form a sewage suction air flow flowing from the sewage suction port 210 to the sewage bucket 410. After the cleaning part 220 absorbs the liquid and gets wet, it wipes the surface to be cleaned. The rotating cleaning part 220 first contacts the comb rack 232 and then contacts the scraper 231. The tips of the teeth 2321 of the comb teeth extend into the fluff 223 and can strip off the entangled hairs, adhered flocs and a small amount of adsorbed sewage. The scraper 231 abuts against the outer layer of the cleaning part 220 and can basically squeeze out the sewage adsorbed by the fluff 223. The sewage squeezed out after the cleaning part 220 is scraped and squeezed twice converges to form a larger liquid flow. The liquid flow is split into multiple strands by the liquid flow filling area 233 and flows downward towards the sewage suction port 210 through the liquid flow filling area 233 under the suction of the fan 420. The liquid flowing through the liquid flow filling area 233 can wash part of the fluff 223, and can also wash away the dirt such as hairs and flocs stripped off from the comb teeth 2321, ensuring the dirt stripping effect of the comb teeth 2321 on the cleaning part 220, and further ensuring the wiping effect of the cleaning part 220 on the surface to be cleaned, greatly reducing the frequency of the user manually cleaning the scraping component 230.

[0066] As an alternative to this embodiment, the water dividing part 320 and the scraping component 230 can also be arranged at the bottom of the front cover 250.

[0067] Embodiment Two

[0068] Combined with Figure 10 In this embodiment, the outer contour of the comb teeth is generally triangular, and a fillet is provided at the sharp corner at the front end of the comb teeth 2321, so that the tip of the comb teeth 2321 is a rounded corner structure.

[0069] The other structures of Embodiment Two are the same as those of Embodiment One and will not be elaborated here one by one.

[0070] Embodiment Three

[0071] Combined with Figure 11 In this embodiment, the left and right side walls of the comb teeth are convex arc surfaces 2327 protruding outward, and the tip of the comb teeth 2321 is a rounded corner structure.

[0072] The other structures of Embodiment Three are the same as those of Embodiment One and will not be elaborated here one by one.

[0073] Embodiment Three can be combined with Embodiment Two.

[0074] Embodiment Four

[0075] Combined with Figure 12, in this embodiment, the left and right side walls of the comb teeth are concave arc surfaces 2328 that are concave towards the central plane P of the comb teeth, and the tooth tips of the comb teeth are rounded structures.

[0076] The other structures of Embodiment 4 are the same as those of Embodiment 1, and will not be elaborated here one by one.

[0077] Embodiment 4 can be combined with Embodiment 2.

[0078] Embodiment 5

[0079] In this embodiment, the scraper is integrally formed with the comb tooth bar. Correspondingly, the first fixing portion of the scraper and the second fixing portion of the comb tooth bar are combined into one.

[0080] The other connection structures of Embodiment 5 are the same as those of Embodiment 1, and will not be elaborated here one by one.

[0081] Embodiment 5 can be combined with any one of Embodiments 2, 3, and 4.

[0082] Embodiment 6

[0083] Combined Figure 13 , in this embodiment, the floor squeegee 280 is further provided with a rib 282 that protrudes downward relative to the bottom surface of the floor brush 200. The rib 282 is located behind the scraping portion 281, and a spaced groove 283 with a certain width is formed between the rib 282 and the scraping portion 281.

[0084] Combined Figure 14 , the surface cleaning device is equipped with a base 700. When the surface cleaning device is placed on the base 700, procedures such as charging, self-cleaning, and drying can be completed. A concave cleaning groove 710 is provided at the front part of the top surface of the base 700. Combined Figure 15 , when the surface cleaning device is placed on the base 700, the bottom side of the cleaning member 220 is located in the cleaning groove 710 so that the cleaning member 220 can be cleaned in the cleaning groove 710. In addition, the rib 282 abuts against the upper surface of the base 700 near the rear edge of the cleaning groove 710. By the abutment of the rib 282 and the base 700, it is possible to avoid the problem that the scraping portion 281 flips backward and is located outside the cleaning groove 710, resulting in the liquid in the cleaning groove 710 flowing outwards, and it is also possible to avoid the problem that the suction strength is reduced due to the backward flipping of the scraping portion 281 and the liquid in the cleaning groove 710 cannot be pumped dry, which can improve the cleaning effect of the cleaning member 220.

[0085] The other structures of Embodiment 6 are the same as those of Embodiment 1, and will not be elaborated here one by one.

[0086] Embodiment 6 can be combined with any one of Embodiments 2, 3, 4, and 5.

[0087] Embodiment 7

[0088] Combined with Figure 16 , in this embodiment, the front surface of the scraping part 281 has a plurality of ribs 284 distributed at intervals along the length direction of the floor squeegee 280. The extending direction of the ribs 284 is inclined with respect to the length direction of the floor squeegee 280, and the distance between adjacent ribs 284 gradually increases from the middle part of the floor brush to the left and right sides. Preferably, the ribs 284 are symmetrically distributed with respect to the central plane of the floor brush, and the two mutually symmetrical ribs 284 are substantially in an eight-shaped pattern. The distribution density of the ribs 284 changes from dense to sparse from the central plane of the floor brush to the left and right sides, so that the distance between adjacent ribs 284 gradually increases from the middle part of the floor brush to the left and right sides. The ribs 284 enable the scraping part 281 to be in full contact with the surface to be cleaned during the operation of the device to ensure the suction intensity of the dirt suction airflow. The ribs 284 can also appropriately reduce the contact area between the scraping part 281 and the surface to be cleaned to appropriately reduce the friction force received by the scraping part 281, thereby reducing the difficulty for the user to push and pull the body by holding the handle to move the floor brush on the surface to be cleaned. The ribs 284 have a guiding effect on the dirt under the suction action, and can better guide the dirt to flow towards the dirt suction port.

[0089] The other structures of the seventh embodiment are the same as those of the first embodiment, and will not be described in detail here.

[0090] The seventh embodiment can be combined with any one of the second, third, fourth, fifth, and sixth embodiments.

[0091] In addition to the above preferred embodiments, the present utility model has other implementation manners. Those skilled in the art can make various changes and deformations according to the present utility model. As long as they do not depart from the spirit of the present utility model, they shall fall within the scope defined in the claims of the present utility model.

Claims

1. A surface cleaning device with a scraping assembly, comprising a body, a floor brush, a liquid supply assembly and a sewage suction assembly. A holding handle is provided at the upper end of the body. The lower end of the body is pivotally connected to the floor brush. The floor brush is provided with a sewage suction port, a cleaning member and a scraping assembly for scraping and squeezing the cleaning member. The liquid supply assembly includes a clean water tank and a water distribution member corresponding to the cleaning member. The sewage suction assembly includes a sewage bucket communicable with the sewage suction port and a blower disposed above the sewage bucket. The scraping assembly is disposed between the water distribution member and the sewage suction port, and is characterized in that, The scraping assembly includes a scraper and a comb tooth bar that are parallel to each other in the upper and lower parts. The comb tooth bar has a plurality of comb teeth that are spaced apart along the axial direction of the cleaning member. The tooth tips of the comb teeth protrude forward relative to the scraper and the protruding distance does not exceed 3 mm. The scraper and two adjacent comb teeth form a liquid flow filling area that is open toward the sewage suction port, and the width of the liquid flow filling area gradually increases from the back to the front.

2. The surface cleaning device with a scraping component according to claim 1, characterized in that The side walls of the comb teeth are inclined surfaces, convex arc surfaces or concave arc surfaces, so that the width of the comb teeth gradually decreases from the back to the front.

3. A surface cleaning device with a scraping component according to claim 1, characterized in that, The tooth tips of the comb teeth are rounded structures.

4. The surface cleaning device with a scraping component according to claim 1, characterized in that, The scraper comprises a scraping and squeezing part and a first fixing part which are distributed front and back, and the liquid flow filling area is located below the scraping and squeezing part.

5. The surface cleaning device with a scraping component according to claim 4, characterized in that, The comb tooth bar comprises a combing portion and a second fixing portion which are distributed front and back, the comb teeth are located in front of the combing portion, and the combing portion is located below the scraping portion.

6. The surface cleaning device with a scraping assembly according to claim 5, characterized in that, The scraper and the comb teeth are both metal parts, and the second fixing part is located below the first fixing part and the two are tightly fitted.

7. The surface cleaning device with a scraping assembly according to claim 5, wherein, The scraper and the comb teeth are integrally formed, and the first fixing portion and the second fixing portion are integrated into one body.

8. The surface cleaning device with a scraping component according to claim 5, characterized in that, The thickness of the scraping part is not greater than the thickness of the combing part; and / or the thickness of the comb teeth is greater than or equal to the thickness of the combing part.

9. The surface cleaning device with a scraping component according to claim 1, characterized in that, The floor brush is provided with a floor scraper located below the dirt suction port and parallel to the scraping assembly. The floor scraper is provided with a sweeping portion and retaining ribs which protrude downwards and are parallel to each other relative to the bottom surface of the floor brush. The retaining ribs are located behind the sweeping portion and a spacing groove is provided between the two.

10. The surface cleaning device with a scraping component according to claim 9, characterized in that, The front surface of the scraping part has a plurality of convex ribs spaced apart along the length direction of the floor scraper. The extending direction of the convex ribs is inclined relative to the length direction of the floor scraper. The spacing between adjacent convex ribs gradually increases from the middle part of the floor brush to the left and right sides.

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