CN117883008B

CN117883008B - A surface cleaning device with good suction power

Info

Publication number: CN117883008B
Application number: CN202311161322.XA
Authority: CN
Inventors: 王丽军; 朱泽春; 朱广; 崔卫民
Original assignee: Joyoung Co Ltd
Current assignee: Joyoung Co Ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2025-03-18
Anticipated expiration: 2043-09-08
Also published as: CN117883008A

Abstract

The invention discloses a surface cleaning device with good suction force, which comprises a floor brush with a dirt sucking port, a machine body hinged with the floor brush and a dirt sucking fan, wherein the floor brush is provided with a roller brush for cleaning a surface to be cleaned, a dirt scraping piece and a carding piece for cleaning the roller brush, the dirt scraping piece and the carding piece are sequentially arranged above the dirt sucking port from top to bottom, the surface cleaning device is characterized in that the carding piece is provided with a plurality of comb teeth, a gap is formed between two adjacent comb teeth, the comb teeth extend downwards at least partially, so that the gaps are at least partially positioned between the dirt sucking openings and the roller brushes to form slit effect areas, when the dirt sucking fan works, the wind pressure of the slit effect areas is increased, unbalanced air flow is generated at the dirt sucking openings, and windings, dirt and dirt liquid such as hair scraped by the comb teeth and the dirt scraping piece are smoothly sucked into the dirt sucking openings under the action of the large wind pressure of the unbalanced air flow, so that the dirt sucking effect is further improved, and the dirt sucking force of the surface cleaning device is improved.

Description

Surface cleaning device with good suction force

Technical Field

The invention belongs to the technical field of cleaning appliances, and particularly provides a surface cleaning device.

Background

With the development of surface cleaning technology, surface cleaning equipment gradually goes into the family life of people and becomes a common electrical appliance for cleaning floors. Surface cleaning apparatus generally comprise a main body and a floor brush in which a roller brush is provided as a cleaning member, which is rubbed against the floor to effect cleaning. In the process of cleaning the floor by the cleaning member, the dirt on the cleaning member and the adhered dirt need to be scraped synchronously by the dirt scraping member, so that the cleaning member is cleaner for cleaning the surface to be cleaned, in addition, in the process of cleaning the windings with hair, thread ends and the like, the windings are easy to wind on the outer surface of the cleaning member, especially the periphery of a single roller, in order to clean the foreign matters wound on the cleaning member, a technician is provided with comb teeth on the floor brush, so that the windings on the outer surface of the cleaning member are scraped off by the comb teeth.

Such as application number 201711481216.4, a prior art cleaning device having a comb unit for removing debris from a cleaning roller is disclosed in which the comb unit includes a series of spaced apart protrusions or teeth extending into the cleaning roller to prevent accumulation and removal of debris (e.g., hair, threads, etc.), the protrusions extending along a substantial portion of the cleaning roller and partially into the cleaning roller to intercept the debris as it passes around the roller, the protrusions having angled leading edges that are not aligned with the center of rotation of the cleaning roller and are directed in or against the direction of rotation of the cleaning roller. The comb unit and protrusions are shaped and configured to facilitate removal of debris from the cleaning roller with minimal impact on the operation of the cleaning apparatus. While the protrusions or teeth can well prevent the accumulation and winding of hairs, wires and the like, the gaps between the protrusions or teeth are small, so that solid garbage is easy to remain in the gaps between the protrusions or teeth, the hair, wires and the like are wound on the protrusions or teeth, and therefore, the protrusions or teeth cannot enter a dirt suction port, new troubles are brought to customers by cleaning after dirt is removed, meanwhile, as the protrusions mostly extend into the cleaning roller, especially the front edge of the protrusions or teeth are not aligned with the rotation center of the cleaning roller, and are guided to the rotation direction of the cleaning roller or are opposite to the rotation direction of the cleaning roller, when the cleaning roller rotates, resistance is increased to the rotation of the cleaning roller, further, the work load of a motor for driving the cleaning roller is increased, the power of the motor is insufficient, a motor with higher power is required, further, the cost of a surface cleaning device is increased, energy and resources are wasted, in addition, the protrusions or teeth with the structure are used for a long time, friction marks appear on the cleaning member of the cleaning roller, the front edge of the cleaning roller is not aligned with the rotation center of the cleaning roller, the front edge of the cleaning roller is not aligned with the rotation center of the rotation of the cleaning roller, the cleaning roller is also reduced, the cleaning effect is reduced locally, and the cleaning effect is reduced after the cleaning roller is caused, and the cleaning effect is reduced locally, and cleaning effect is caused.

Disclosure of Invention

The invention aims to provide a surface cleaning device, which utilizes the comb teeth of a carding piece to downwards extend to at least partially shield a dirt sucking port, so that a slit effect area is formed by gaps between two adjacent comb teeth corresponding to the dirt sucking port, the wind pressure of the slit effect area is increased, the suction effect on dirt liquid, dirt and winding is good, and the dirt sucking force of the surface cleaning device is further improved.

In order to solve the problems in the prior art, the invention provides a surface cleaning device with good suction force, which comprises a ground brush with a dirt sucking port, a machine body hinged with the ground brush and a dirt sucking fan, wherein a roller brush for cleaning a surface to be cleaned, a dirt scraping piece and a carding piece for cleaning the roller brush are arranged on the ground brush, the dirt scraping piece and the carding piece are sequentially arranged above the dirt sucking port from top to bottom, the carding piece is provided with a plurality of comb teeth, gaps are formed between two adjacent comb teeth, and the comb teeth at least partially extend downwards, so that the gaps are at least partially positioned between the dirt sucking port and the roller brush to form a slit effect area.

Further, the effective area of the slit effect area is S, and the equivalent area of the dirt suction opening is S ₀, wherein S/S ₀ is more than or equal to 2 and less than or equal to 12.

Further, the dirt absorbing port is flat, the top of the dirt absorbing port is not lower than the central axis of the roller brush, the height of the penetrating groove covering the dirt absorbing port is H, and the height of the dirt absorbing port is H, wherein H/H is more than or equal to 0.2 and less than or equal to 0.25.

Further, the width of the comb teeth is b, the distance between two adjacent comb teeth is L, wherein b is more than L, and the distance L is more than or equal to 0.7mm and less than or equal to L <1.5mm.

Further, the carding piece also comprises a connecting part for connecting at least the upper parts of the comb teeth, and the lower end of the connecting part is lower than the top of the dirt sucking port.

Further, the connecting part is provided with a diversion trench, and the diversion trench is arranged corresponding to the gap.

Further, the guide groove is formed by extending the gap upwards along the connecting part, or the guide groove is formed by extending the gap upwards to the lower surface of the dirt scraping section through the connecting part.

Further, the comb teeth at least partially extend into the bristles of the roller brush, the comb teeth are at least partially positioned below the central axis of the roller brush, and the front tooth surfaces of the comb teeth extend downwards along the periphery of the roller brush.

Further, the dirt scraping piece and the carding piece are in conflict with the roller brush, the front end of the dirt scraping piece is located in front of the tooth point, and a suction negative pressure area is formed among gaps among the front surface of the carding piece, the lower surface of the dirt scraping piece and the outer surface of the roller brush.

The surface cleaning device has at least the following beneficial effects:

1. The invention is characterized in that a plurality of comb teeth are arranged on the carding member, a space is formed between every two adjacent comb teeth, the comb teeth at least partially extend downwards, so that a gap between the comb teeth is at least partially positioned between a dirt sucking port and a roller brush to form a slit effect area, when the surface cleaner is used for cleaning, the roller brush rotates, the cleaning member contacts with a surface to be cleaned to clean, meanwhile, a dirt sucking fan works, most of dirt or dirt liquid and windings such as hair are sucked into the dirt sucking port, the carding member and the dirt scraping member are sequentially contacted with the roller brush, the comb teeth are utilized to strip and scrape part of windings such as hair adhered on the cleaning member of the roller brush from the roller brush, the dirt scraping member is utilized to scrape and squeeze the cleaning member of the roller brush, the dirt and the dirt liquid adhered on the cleaning member of the roller brush is scraped off, and the dirt liquid flows downwards to the area of the gap of the comb teeth by virtue of gravity and the extrusion force of the dirt scraping member, under the guiding action of tooth grooves of the comb teeth, liquid flow washes the stripped and loosened hair and other windings near the guide section, the dirty liquid continuously flows downwards from the tooth grooves of the comb teeth to gaps of the comb teeth, the dirt suction fan works while scraping dirt, when the air flow moves to the dirt suction opening, a slit effect is generated in gaps between two adjacent comb teeth corresponding to the dirt suction opening, the air pressure of a slit effect area formed by the gaps of the comb teeth is increased, unbalanced air flow is generated at the dirt suction opening, the wind, dirt and dirty liquid scraped by the dirt scraping piece and the comb teeth and adhered to the hair and other windings on the roller brush are smoothly sucked into the dirt suction opening under the action of the larger air pressure of the unbalanced air flow, thus further improving the dirt suction effect, even if larger solid particles with the size which is different from that of the gaps of the comb teeth exist, the gaps of the comb teeth are penetrated gaps, and the gaps are communicated with the dirt suction opening, even if larger particles or clustered windings with a small difference with the size of the comb gaps enter gaps among the comb teeth, the gaps among the comb teeth are enlarged due to deformation of part of the suspended comb teeth under the action of larger wind pressure, and further the larger particles or clustered windings are sucked into the dirt suction port from the comb gaps under the action of larger suction force, so that hair and solid dirt are prevented from accumulating in the gaps among the comb teeth, the cleaning effect of dirt scraping pieces and the comb teeth on the roller brush is improved, and especially, the stripping and suction effects of the windings are good, dirt or the windings are not reserved on the comb teeth, and good experience is brought to customers.

2. The effective area of the slit effect area is S, and the equivalent area of the dirt suction opening is S ₀, wherein S/S ₀ is more than or equal to 2 and less than or equal to 12. The gap between two adjacent comb teeth corresponding to the dirt sucking port can generate a lower effect, the area of the slit effect area is enough to increase the wind pressure and promote the suction force, and the generated suction force is enough to be larger than the adhesive force of dirt or a winding or dirt liquid, so that the dirt sucking efficiency is improved, the dirt sucking effect is improved, and especially the suction effect on lighter objects such as hair winding is improved. When S/S ₀ is smaller than 2, the suction force is insufficient, larger particles are not easy to pass through and are easy to remain between gaps of the comb teeth, and when S/S ₀ is larger than 12, although the slit effect is obvious, the wind pressure is large, the suction force is large, the treatment of dirt or hair windings scraped by the comb teeth or dirt scraping pieces and adhered to the cleaning piece of the roller brush is facilitated, the dirt absorbing opening is too much shielded by the comb piece, the suction of the dirt or hair windings with larger particles on the surface to be cleaned is not facilitated by the surface device, the normal dirt absorbing process is influenced, and the customer experience is poorer.

3. The width of the comb teeth is b, the distance between two adjacent comb teeth is L, b is larger than L, under the action of the dirt suction fan, a slit effect is generated at the distance between the penetrating sections of the two adjacent comb teeth at the dirt suction port, and the wind pressure is increased, so that dirt, dirt liquid, hair and the like among the comb teeth can be sucked conveniently. And the distance L is less than or equal to 0.7mm and less than or equal to L <1.5mm, so that reasonable gaps between penetrating sections of comb teeth shielding the dirt absorbing mouth are ensured, the area of a slit effect area is ensured, sufficient wind pressure can be generated at the area to promote suction force, the generated suction force is enough to be greater than the adhesive force of dirt or winding or dirt liquid, and the clamping force of the winding or larger particles clamped between the two comb teeth is further beneficial to dirt entering the dirt absorbing mouth through the gaps of the comb teeth smoothly. When the distance L is smaller than 0.7, the comb teeth are too dense, so that the slit effect is difficult to generate, and the penetrating sections of the comb teeth have smaller deformation space when being acted by wind pressure, which is unfavorable for sucking dirt liquid or dirt and winding. When the distance L is larger than 1.5, the number of teeth of the dirt absorbing mouth is reduced in unit length, so that the dirt scraping surface of the comb teeth in unit length is reduced, and especially the stripping effect on the windings is reduced, although the overall dirt absorbing force and dirt absorbing area of the floor brush are larger, the windings with larger particles cannot be clamped, the area of the slit effect area of the comb teeth is reduced due to the larger distance L, the wind pressure is reduced in multiple, the suction force is reduced, and instead, the dirt liquid or dirt or the windings which are not beneficial to the penetrating section of the comb teeth are sucked away rapidly.

3. The dirt absorbing port is flat, and the top of the dirt absorbing port is not lower than the central axis of the roller brush, so that the dirt absorbing port is ensured to be large enough, and the surface cleaning device is ensured to process larger dirt or wound such as hair on the surface to be cleaned. The height of the gap covering the dirt absorbing port is H, the height of the dirt absorbing port is H, wherein H/H is more than or equal to 0.2 and less than or equal to 0.25, the length of the gap shielding the comb teeth at the dirt absorbing port is ensured to be enough, the wind pressure shielding the gap at the dirt absorbing port can be increased, the suction force generated by the increased wind pressure is enough to resist the adhesive force of dirt or winding or dirt liquid in the gap, and the clamping force of the winding or larger particles clamped between the two comb teeth is further facilitated, and dirt smoothly enters the dirt absorbing port through the gap of the comb teeth. When H/H is greater than 0.25, the gaps between the comb teeth and the length of the comb teeth covering the dirt absorbing opening are larger, so that the effective dirt absorbing area of the dirt absorbing opening is reduced, the problem that dirt or dirt liquid or windings are peeled off and scraped from the cleaning piece of the roller brush by the dirt scraping piece and the comb teeth is solved, but larger dirt absorbed by the surface cleaner from the surface to be cleaned is blocked by the comb teeth, cannot enter the dirt absorbing opening, and worse experience is brought to customers. When H/H is less than 0.2, the gaps of the comb teeth and the length of the comb teeth blocking the dirt suction opening are small, although larger dirt sucked from the surface to be cleaned can be sucked into the dirt suction opening, hair and the like cannot be wound around the comb teeth, but the stripping effect of the comb teeth on the windings on the cleaning member of the roller brush is insufficient, so that some windings cannot be stripped from the cleaning member, in addition, the slit effect is weak between the gaps of the comb teeth due to the fact that the length of the comb teeth blocking the dirt suction opening is small, wind pressure is small, even if fewer and lighter windings can enter the dirt suction opening, the suction force generated by wind pressure is insufficient to overcome the adhesion force of the dirt packed in particles between the comb teeth between penetrating sections of the comb teeth, and small-particle dirt is difficult to suck.

4. Through will the broach at least part stretches into in the brush hair of roller brush, the broach is located the central axis below of roller brush at least part, the front tooth face of broach extends the setting downwards along the periphery of cleaning member, makes the broach of carding can stretch into in the brush hair of cleaning member, and the front tooth face of broach is the state of face contact with the cleaning member of roller brush, and the tooth point of broach can stretch into in the brush hair on the cleaning member and pass the brush hair and stretch out downwards, perhaps make the broach of carding all comb hair downwards along the tangential direction of the cleaning member of roller brush, not only can effectively scrape and peel off the winding thing on the roller brush surface and hide the filth at the brush hair root, thereby significantly reduced the brush hair that the tooth point directly stretches to the broach forms obvious tooth trace on the brush hair, simultaneously can not increase the resistance that the roller brush rotates, also reduced the locked-rotor problem of drive motor that causes the drive roller brush to rotate because of the increase of resistance takes place.

5. By arranging the comb further comprising a connecting part connecting at least the upper parts of the comb teeth, the lower end of the connecting part is lower than the top of the dirt absorbing port, so that the effective passing area of the air flow at the dirt absorbing port is further reduced, the air pressure is further increased, and the surface cleaning device has better suction effect on dirt or dirt liquid on the surface to be cleaned, especially on large-cluster deformable dirt or lighter hair and other windings on the surface to be cleaned. Meanwhile, as the gaps are arranged below the connecting parts, the gaps are all positioned in the area where the dirt sucking ports are positioned, so that the formed slit effect area is maximized, and the gaps among the comb teeth are utilized to the greatest extent. The connecting portion is provided with the guiding gutter, the guiding gutter corresponds the clearance setting between the broach, make the guiding gutter flow to the drainage effect that the clearance of the downward run-through section of liquid flow flows, make liquid flow drive winding such as filth or hair and flow to the clearance more smooth and easy, not only can wash away the clearance between the broach with the winding thing such as filth or hair in the clearance fast smoothly, simultaneously, the guiding gutter shelters from the dirt absorbing port and forms the back wind district, the negative pressure that produces here is great, make the guiding gutter form the narrow tube effect, the filth liquid that is scraped by the dirt scraping piece produces great water pressure in the guiding gutter, thereby can wash away the filth that the dirt scraping piece scraped adhesion on the roller brush to the clearance department between the broach, because the clearance all covers in the dirt absorbing port, make the better production slit effect when the air current moves to the run-through inslot, wind pressure is bigger, under the air current drive of great wind pressure, the filth such as the filth liquid that washs to the run-through groove is carried filth or hair can pass fast and pass through the run-through the groove and get into the dirt absorbing port.

6. Scrape dirty piece and comb the piece and have stronger scraping and scrape dirty ability compared, owing to scrape dirty piece and comb a part laminating setting, scrape dirty piece and comb the piece and all contradict with the cleaning member, simultaneously owing to scrape the front end of dirty piece and be located the place ahead of the tooth point of broach, and both contradict with the roller brush, at the dirt absorbing fan during operation, the regional air current that the clearance between the lower surface of the front surface of carding piece, the lower surface of scraping dirty piece and the roller brush surface is located dirt absorbing mouth top can not pass through, therefore these regions are leeward region, and leeward region just forms the suction negative pressure district. The gap between the front surface of the carding piece and the lower surface of the dirt scraping piece and the outer surface of the roller brush forms a suction negative pressure area, the dirt scraping piece extrudes and scrapes the cleaning piece, under the negative pressure environment, dirt liquid is scraped and then gathered to a certain degree in the suction negative pressure area between the lower part of the dirt scraping piece and the front surface of the carding piece, larger water pressure is generated, liquid flow instantly gushes into gaps between tooth grooves of the comb teeth, the liquid flow is divided into a plurality of liquid flows into the gaps between the tooth grooves of the comb teeth, the water pressure is further increased instantly between the tooth grooves of the comb teeth, therefore, the liquid flow washes the wound or dirt stripped off by the cleaning piece by the comb teeth under the action of the multi-liquid flow with increased water pressure, the liquid flow drives the wound such as dirt, hair and the like to flow to the gap between the comb teeth at least partially shielding the dirt sucking opening due to the fact that the comb teeth downwards extend, and the gap between the gaps between the adjacent two comb teeth form a plurality of through gaps, and the gap effect of the comb teeth at the dirt sucking opening is formed, and the gap effect is greatly influenced by the wind pressure effect of the dirt sucking slit effect, the dirt is greatly influenced by the wind effect, the particles and the dirt is sucked into the gap effect due to the fact that the wind effect is greatly influenced by the slit effect. Some hair may be wound around the periphery of the comb teeth, and some small particle dirt may adhere to the gaps between adjacent comb teeth, but under the high hydraulic action that the gaps of the comb teeth are instantaneously divided into a plurality of large hydraulic small liquid flows, the dirt in the hair and the gaps is washed at a high speed so as to offset the adsorption force between the hair and the comb teeth, under the high pressure suction action of a slit effect area formed by the gaps of the penetrating sections of the comb teeth of the dirt absorbing port, the dirt between the comb teeth can be wrapped with the solid dirt such as hair and the like and is absorbed along the gaps of the comb teeth and enters the dirt absorbing port, so that the accumulation of the solid dirt such as the hair and the like in the gaps of the comb teeth is avoided, the cleaning effect of the dirt scraping piece and the comb teeth on the surface of the roller brush is improved, the cleaning effect of the roller brush can be ensured to be normal, the probability of retaining the tooth mark on the surface of the cleaning piece of the roller brush is reduced when the continuous rotation cleaning work is ensured, the secondary pollution caused by the dirt of the cleaning piece is reduced, and the cleaning of the surface to be cleaned thoroughly.

Drawings

FIG. 1 is a schematic view of a surface cleaning apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a floor brush of the surface cleaning apparatus

FIG. 3 is a cross-sectional view of the floor brush of FIG. 2 taken along the direction A-A;

fig. 4 is an enlarged view at a in fig. 3;

FIG. 5 is an exploded view of a roller brush with a roller brush cover mounted on a ground brush;

FIG. 6 is a front view of the floor brush of FIG. 2;

Fig. 7 is an enlarged view at B in fig. 6;

FIG. 8 is a schematic diagram of the path of air flow through the gaps between the teeth of the comb when the suction fan is in operation;

FIG. 9 is a cross-sectional view of FIG. 7 taken along the direction C-C;

FIGS. 10/11 are views of other embodiments of the attachment portion of the comb;

FIG. 12 is a sectional view of a floor brush structure of the surface unit according to the second embodiment;

fig. 13 is an enlarged view of D in fig. 12;

Fig. 14 is an enlarged view at G in fig. 13;

FIGS. 15 and 16 are other embodiments of the comb of example two;

fig. 17 is a partial sectional view of a floor brush of the surface plot apparatus described in the third embodiment.

The reference numerals are as follows:

1. A body; 11 handles; schematic positions of a dirt suction fan, 2, a floor brush, 21, an upper shell, 22, a lower shell, 221, a front side, 222, a first convex edge, 223, a second convex edge, 224, a bottom, 23, a containing cavity, 24, a dirt suction opening, 241, a top, 25, a dirt suction hose, 26, a roller brush cover, 27, a roller brush cavity, 28, a floor scraping strip, 3, a clean water tank, 4, a roller brush, 41, bristles, 42, a cleaning element, 43, a roller, 44, a first rotating roller, 45, a second rotating roller, 46, a supporting frame, 500, a suction negative pressure area (liquid flow pressurizing area), 5, a dirt scraping element, 51, a mounting section, 52, a hanging section, 521, a front end, 53, a transition section, 54, a lower surface, 6, a carding element, 61, comb teeth, 611, a penetrating section, 612, a guide section, 613, a gap, 614, a guide groove 615, a slit effect area, 616, a front tooth surface, 617, a rear tooth surface, 6171, a first inclined surface, 6172, a second inclined surface, 618, a suction negative pressure area (liquid flow pressurizing area), 5, a dirt scraping element, 51, a mounting section, 52, a hanging section, 521, a hanging section, a water guiding section, a water containing section, and a space between the water containing section, and 9.

Detailed Description

It should be noted that, in the description of the present application, terms such as "center," "upper," "lower," "top," "bottom," "vertical," "horizontal," "inner," "outer," and the like indicate directional or positional relationships, and are based on the directional or positional relationships shown in the drawings, which are merely for convenience of description, and do not indicate or imply that a device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the application. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, in the description of the present application, unless explicitly stated and limited otherwise, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected, mechanically connected, electrically connected, directly connected, indirectly connected via an intermediary, or in communication between two elements. The specific meaning of the above terms in the present application can be understood by those skilled in the art according to the specific circumstances.

The surface cleaning device of the invention comprises a hand-held surface cleaning device, such as a floor cleaner, a dust collector, a cloth cleaner and the like, and also comprises a self-moving surface cleaning device, such as a sweeping robot, a sweeping robot and the like.

The flow rate of the liquid is increased when the liquid passes through the stenosis. The flow rate of the gas stream is also increased by the flow of similar liquids in the tube as the ground passes over narrow terrain, and the density is also increased by the compressibility of the gas. The effect of such topographical canyons on airflow is known as the "slot effect," also known as the "canyon effect. The slit effect in the invention is the same as the canyon effect in daily speaking, and refers to the phenomenon that wind sucked into a roller brush cavity from the position between a roller brush of a ground brush and a ground scraping strip moves to a dirt sucking port and encounters a gap between comb teeth shielding the dirt sucking port, and the wind speed is increased and the wind pressure is increased when the wind passes through the narrower gap due to the narrower gap. The slit effect area of the invention is an area formed by gaps between two adjacent comb teeth which are arranged corresponding to the dirt sucking opening and are used for shielding the dirt sucking opening. For example, 8 comb teeth for shielding the dirt sucking mouth are provided, and 7 comb teeth are provided in the comb teeth of the 8 comb teeth, and the area formed by the 7 gaps is a slit effect area.

The roller brush can be a single-roller, a double-roller or a crawler-type roller brush. In this embodiment, the roller brush 4 is mounted on the ground brush, the axial direction of the roller brush 4 is defined as the left-right direction, and the horizontal direction perpendicular to the axial direction of the roller brush 4 is defined as the front-rear direction, and during the rotation of the roller brush 4, the roller brush 4 is operated clockwise from the left view, that is, the roller brush is rotated from the bottom up and then back, so that the ground brush is moved back. When the surface cleaning device works, the clean water tank 3 supplies liquid for the roller brush, the roller brush rotates, the cleaning piece and the brush hair wipe the surface to be cleaned, the dirt scraping piece extrudes and scrapes the roller brush to scrape dirt liquid and dirt on the brush hair and/or the cleaning piece, the comb teeth scrape the windings such as hair on the brush hair and the cleaning piece, the dirt absorbing fan works, dirt liquid and dirt on the surface to be cleaned are absorbed through the dirt absorbing opening, and the scraped dirt liquid and dirt on the roller brush.

Embodiment one:

As shown in fig. 1 to 11, the surface cleaning device with good suction force according to the present invention comprises a floor brush 2 capable of moving on a surface to be cleaned, a machine body 1 hinged with the floor brush 2, wherein the rear part of the floor brush 2 is pivotally connected with the lower part of the machine body 1, a handle 11 for driving is arranged at the upper end of the machine body 1, a dirt containing barrel 7, a clean water tank 3 and a dirt suction fan for sucking dirt liquid and/or dirt into the dirt containing barrel 7 are arranged on the machine body 1, reference numeral 13 is a schematic position of the dirt suction fan, the dirt suction fan is located above the dirt containing barrel 7 and located on the same side as the dirt containing barrel 7, a dirt suction opening 24 is arranged on the floor brush 2, the floor brush 2 comprises an upper shell 21 and a lower shell 22, the upper shell 21 is buckled on the lower shell 22 to form a containing cavity 23, a ground scraping bar 28 which is arranged at the front side of the bottom 222 of the lower shell 22 in a downward inclined manner is also arranged on the front side of the bottom 222 of the lower shell 22, and the ground scraping bar 28 is made of hard rubber in the embodiment. The dirt absorbing port 24 is arranged on the front side 221 of the lower shell 22, the dirt absorbing port is rectangular, the four corners of the dirt absorbing port are rounded, a dirt absorbing hose 25 communicated with the dirt absorbing port 24 is arranged in the accommodating cavity 23, the dirt absorbing hose 25 penetrates out from the rear side of the accommodating cavity 23 upwards to be connected with a dirt absorbing pipe (not shown in the figure) on the dirt containing barrel 7, the ground brush 2 is further provided with a roller brush 4 for cleaning a surface to be cleaned, a dirt scraping piece 5 and a carding piece 6 for cleaning the roller brush 4, and the dirt scraping piece in the embodiment is a metal dirt scraping piece. As shown in fig. 3 and 4, the roller brush 4 includes a first rotating roller 44, a second rotating roller 45, a supporting frame 46 connecting the first rotating roller 44 and the second rotating roller 45, and cleaning members including cleaning members 42 and bristles 41 sleeved on the outer surfaces of the first rotating roller 44 and the second rotating roller 45. The diameter of first rotor 44 and second rotor 45 equals, scrape dirty piece 5 setting in the central axis EF top of first rotor 44, the unsettled section 52 downward sloping setting of dirty piece 5 is scraped, the front side of brush 2 is located to brush 4, brush 2's front side still is equipped with and shelters from in brush cover 26 of brush 4 top, and the front side 221 of upper casing 21 and lower casing 22 and brush cover 26 form the roller brush chamber 27 of installing brush 4, scrape dirty piece 5 and carding piece 6 and locate in proper order the top of suction inlet 24, scrape dirty piece 5 top still and be equipped with branch water spare 8, be equipped with a plurality of broachs 61 on the carding piece 6, the broach 61 of carding piece 6 is at least partly stretched into in brush 41 hair of brush 4, broach 61 include run-through section 611 and with water conservancy diversion section 612, broach 61 include the back flank 617 of keeping away from brush 4 and the front flank 616 of brush setting towards brush cover 26, from the front side of brush 4 to the suction inlet side, and the suction inlet is sheltered from the dirt side to the suction inlet side of brush 61, and the dirt can be passed through to the suction inlet by the dirt and the dirt is more easily and the dirt is inhaled to the dirt is more than the suction inlet is less than the suction inlet is had, and the dirt is moved to the dirt is more than the suction inlet is inhaled to the dirt is blown down to the dirt. The gaps 613 penetrating the front tooth surface 616 and the rear tooth surface 617 are formed between the two adjacent penetrating segments, the gaps 613 of the two adjacent penetrating segments 611 form a slit effect area 615 corresponding to the dirt absorbing port 24, as shown in fig. 7 and 8, when the dirt absorbing fan works, the wind pressure increase wind speed at the gap 613 is also increased, the wind pressure near the dirt absorbing port which is not shielded by the comb teeth is smaller than the wind pressure near the dirt absorbing port, so that unbalanced airflow is generated at the dirt absorbing port, and the wind, dirt and dirt liquid such as hair in the gap between the comb teeth are smoothly absorbed into the dirt absorbing port by the faster wind speed under the action of the larger wind pressure of the unbalanced airflow, thereby further improving the dirt absorbing efficiency. Even if larger solid particles with a size which is not much different from that of the comb teeth are present, as the penetrating gaps of the front tooth surface and the rear tooth surface are arranged between the comb teeth and are communicated with the dirt sucking port, even if the larger particles or the clustered windings enter the gaps of the penetrating sections of the comb teeth, the larger particles or the clustered windings squeeze the comb teeth under the action of larger wind pressure, so that the penetrating sections of the comb teeth deform, the gaps between the comb teeth become larger, the contact surface is reduced, the adhesive force is reduced, and the comb teeth are more easily sucked into the dirt sucking port by the larger suction force, therefore, the accumulation of hair and solid dirt in the gaps of the comb teeth is avoided, and especially, the stripping and suction effects on the coiled windings are better, dirt or coiled materials are not remained on the comb teeth, and good experience is brought to customers.

As shown in fig. 3 and 4, the front side of the bottom 224 of the lower housing 22 is further provided with a ground scraping bar 28 contacting the surface to be cleaned, the ground scraping bar 28 is located below the dirt suction opening 24 and forms a dirt suction nozzle 29 with the roller brush 4, the downward extending portion of the carding member 6 is located between the dirt suction opening 24 and the dirt suction nozzle 29, and the carding member 6 has a guiding surface inclined toward the dirt suction nozzle 29, and the guiding surface is a rear tooth surface 617 of the comb teeth. The comb teeth 61 extend downwards and partly shield the dirt absorbing mouth 24, the passing area of the air flow when running to the dirt absorbing mouth 24 shielded by the comb teeth 61 is suddenly reduced, so that the air pressure is increased, the suction force near the dirt absorbing mouth 24 shielded by the comb teeth 61 is increased, the stay and adhesion of dirt liquid and dirt at the dirt absorbing mouth 24 are reduced under the guide action of the increased suction force and a carding piece, most dirt liquid and dirt can more effectively and rapidly enter and pass through the dirt absorbing mouth to be continuously sent upwards into the dirt containing barrel at the dirt absorbing mouth shielded by the comb teeth, and the dirt absorbing efficiency is improved.

As shown in fig. 3 to 7, the front side 221 of the lower housing 22 is provided with a first flange 222 and a second flange 223 protruding forward, the dirt suction opening 24 is arranged on the front side 221 between the first flange 222 and the second flange 223, and the carding member 6 comprises comb teeth 61, The fixing portion 64 and the connecting portion 62 for connecting the fixing portion and the comb teeth, the comb teeth 61 are arranged protruding downwards from the connecting portion 62, the longitudinal section of each comb tooth is triangular or approximately triangular, a guide groove 614 is further arranged between two adjacent guide sections 612, the guide grooves 614 are arranged on the connecting portion, the guide sections 612 are connected into a whole through the connecting portion, namely, the guide grooves 614 are formed in the connecting portion 62 between the two adjacent guide sections 612, the guide grooves 614 extend upwards to the lower surface of the dirt scraping section 5, namely, the guide grooves 614 extend from the lower end of the connecting portion 62 to the top end of the connecting portion 62, therefore, the comb teeth 61 extend upwards to the top end of the connecting portion along the front surface of the connecting portion 62, and the thickness of each comb tooth is gradually reduced to be flush with the front end of the connecting portion. The guiding groove 614 is the tooth's socket of two adjacent broachs 61, from the bottommost end of connecting portion 62 to tooth point 618 be run through the section, guiding groove 614 corresponds the clearance 613 setting of run through section 611, scrape dirty piece 5 and include installation section 51 and unsettled section 52, installation section 51 sets up in fixed part 64 top, the lower surface of installation section 51 and the upper surface laminating setting of fixed part 64, the top surface and the unsettled section 52 at least part laminating of connecting portion 62, the forward protrusion connecting portion 62 setting of the front end 521 of unsettled section 52, scrape dirty piece 5 top setting water knockout drum 9, the installation section 51 and the fixed part 64 laminating clamp of scraping dirty piece 5 are established between first flange 223 and water knockout drum 9 lower surface. The comb teeth 61 comprise a rear tooth surface 617 deviating from the roller brush 4 and a front tooth surface 616 arranged towards the roller brush, the front tooth surface and the rear tooth surface are rectangular extending from the connecting part to the tooth tip, the rear tooth surface 617 is obliquely arranged towards the direction of the dirt suction nozzle 29, the width of the comb teeth 61 is b, the tooth width b is rectangular, the distance between the gaps 613 of two adjacent comb teeth 61 is L, namely the gap between the width of the tooth grooves and the gap is equal to the distance L, wherein b > L, the distance L is 0.7mm less than or equal to L <1.5mm, the reasonable gap between penetrating sections of the comb teeth shielding the dirt suction port is ensured, the area of a slit effect area is ensured, sufficient wind pressure can be generated at the position to promote suction force, the generated suction force is enough to be larger than the adhesive force of dirt or winding or dirt liquid, and the clamping force of the winding or larger particles clamped between the gaps of the two comb teeth, so that dirt can smoothly enter the dirt suction port through the gap of the comb teeth. The effective area of the slit effect area is S, and the equivalent area of the dirt suction opening is S ₀, wherein S/S ₀ is more than or equal to 2 and less than or equal to 12. The gap between two adjacent comb teeth corresponding to the dirt sucking port can generate a lower effect, the area of the slit effect area is enough to increase the wind pressure and promote the suction force, and the generated suction force is enough to be larger than the adhesive force of dirt or a winding or dirt liquid, so that the dirt sucking efficiency is improved, the dirt sucking effect is improved, and especially the suction effect on lighter objects such as hair winding is improved. In this embodiment, S/S ₀ =10. The height of the penetrating section 611 for shielding the dirt absorbing port 24 is H, the height of the gap for covering the dirt absorbing port is H, and the height of the dirt absorbing port is H, wherein H/H is more than or equal to 0.2 and less than or equal to 0.25, so that the length of the gap for shielding the comb teeth at the dirt absorbing port is ensured to be enough, the wind pressure of the gap for shielding the dirt absorbing port can be increased, the suction force generated by the increased wind pressure is enough to resist the adhesive force of dirt or winding or dirt liquid in the gap, and the clamping force of the winding or larger particles clamped between the two comb teeth, so that dirt can smoothly enter the dirt absorbing port through the gap of the comb teeth. In this example, the value of H/H was 0.23. The height of the penetrating segment 611 shielding the dirt absorbing port 24 is h, that is, the length of the gap between the comb teeth covering the dirt absorbing port is h, wherein 0.7mm < h is less than or equal to 3.5mm, the length of the penetrating segment shielding the comb teeth at the dirt absorbing port is ensured to be enough, the wind pressure of the penetrating segment shielding the dirt absorbing port can be increased, the suction force generated by the increased wind pressure is enough to resist the adhesive force of dirt or winding or dirt liquid in the gap, and the clamping force of the winding or larger particles clamped between the two comb teeth is more favorable for dirt to smoothly enter the dirt absorbing port through the gap of the comb teeth. In this embodiment, l=1.2 mm, h=3 mm, the length of the comb teeth formed by such a scheme is reasonable, the point where the tooth tip 618 is tangent to the cleaning piece 42 of the roller brush 4 is slightly far away from the central axis EF of the roller brush, that is, the tooth tip of the comb teeth can be in contact with the cleaning piece at an earlier point, the stripping treatment effect on the wound matter on the roller brush is better, the length of the comb teeth stretching into the bristles is longer, the contact area of the comb teeth and the comb hair is larger, obvious tooth marks are not generated on the cleaning piece, the movement resistance of the comb teeth to the roller brush is also not large, in addition, the length of the comb teeth for shielding the dirt suction opening is enough, the slit effect is easier to be generated, the surface cleaning device is facilitated to suck larger garbage from the surface to be cleaned, and a stronger slit effect can be formed at the position where the comb teeth shield the dirt suction opening, so that a stronger suction force is generated, and the cleaning effect on dirt or the wound matter scraped by the comb teeth and the dirt scraping piece is better.

The comb teeth 61 are at least partially located below the central axis EF of the roller brush 4, and the front tooth surfaces 616 of the comb teeth 61 extend downwards along the periphery of the cleaning member 42, so that the tooth tips of the comb teeth can extend into the bristles on the cleaning member and penetrate through the bristles to downwards extend, or the comb teeth of the comb member comb the bristles downwards along the periphery of the cleaning member of the roller brush, so that not only can the windings on the surface of the roller brush be effectively scraped and stripped, but also the probability that the tooth tips directly extend to the bristles of the comb teeth to form obvious tooth marks on the bristles is reduced, the resistance of the rotation of the roller brush is not increased, and the probability of the occurrence of the locked rotor problem of the driving motor for driving the rotation of the roller brush due to the increase of the resistance is also reduced. As shown in FIG. 4, the angle a of the front tooth surface 616 inclined downwards along the top 241 of the dirt absorbing opening 24 is 80 degrees less than or equal to a <90 degrees, so that the tooth tips of the comb teeth extend into the bristles, the comb teeth can comb the bristles downwards, the length of the comb teeth which can extend into the bristles of the cleaning member is reasonable, the comb teeth can effectively scrape the wound such as the hair which is to be wound on the roller brush, and the like, and cannot collide too much with the cleaning member or even form deeper tooth marks. The rear tooth surface 617 is arranged obliquely downwards along the connecting part 62, the rear tooth surface 617 of the comb tooth is formed by connecting a first inclined surface 6171 and a second inclined surface 6172, the first inclined surface 6171 is connected with the connecting part 62, the inclined angle of the first inclined surface 6171 is beta, wherein a is less than or equal to beta and less than or equal to 90 degrees, and the inclined angle beta of the first inclined surface 6171 is more than or equal to the inclined angle of the front tooth surface 616 and is 90 degrees at maximum. the included angle between the second inclined plane 6172 and the horizontal plane is θ, so that the inclined angle of the second inclined plane 6172 is θ, and the inclined angle θ of the second inclined plane 6171 is equal to or less than 30 ° and equal to or less than 35 °, in this embodiment, the inclined angle of the rear tooth surface 617 refers to the inclined angle θ of the second inclined plane 6172, so that under the guiding action of the inclined angle θ of the second inclined plane 6172, the dirt liquid and the dirt move more easily and smoothly to the vicinity of the dirt absorbing port, the angle just conforms to the angle formed by the dirt absorbing hose passing through the dirt absorbing port from the rear part of the accommodating cavity upwards to the dirt absorbing pipe on the dirt accommodating barrel, so that the guiding effect is good, and the first inclined plane 6171 plays a good blocking and steering action when the liquid flowing backwards more than the liquid flowing backwards after passing over the comb teeth 61, especially has a good blocking and steering action when the liquid flowing upwards after being extruded along the space between the comb teeth and the dirt absorbing port, so that the dirt liquid flows back again turns to the dirt absorbing port, and the dirt absorbing and the dirt flowing out of the second inclined plane is more smoothly arranged to the dirt absorbing and the dirt absorbing port, so that the dirt flowing back and the dirt flowing into the dirt absorbing port can flow smoothly and the dirt absorbing port the dirt sucking hose moves to the dirt sucking pipe to enter the dirt holding barrel, so that not only is the suction efficiency improved, but also the dirt sucking effect is improved. in the present embodiment, the inclination angle a=84° of the front tooth surface, the inclination angle θ=33° of the second inclined surface, the inclination angle β=90° of the first inclined surface. The tooth thickness of broach from the bottom up diminishes gradually, the tooth's socket from top to bottom makes shallow gradually, has strengthened the water conservancy diversion effect, makes the broach better stretch into in the comb hair and to the resistance that the roller brush motion produced less simultaneously, and guaranteed to be shallower with the tooth's socket that scrapes dirty piece near, because here water pressure is minimum, the negative pressure is also minimum, so the tooth's socket is shallow, and dirt liquid or dirt remain the space is little, and dirt or dirt liquid can not produce a large amount and remain here. The bottom surface of the tooth groove is a cambered surface, the center of the cambered surface is positioned on the side where the roller brush is positioned, and by adopting the structure, the flow guiding effect is better, so that the sewage or dirt can run in the tooth groove more smoothly, and the accumulation probability is reduced.

As shown in fig. 4, the suspended section 52 of the dirt scraping member 5 abuts against the cleaning member 42 of the roller brush 4, the front tooth surface 616 of the comb teeth 61 abuts against the wetted part of the bristles, the tooth tip 618 of the comb teeth 61 is located in the front tooth surface 616 and forms a tangent line with a certain point of the periphery of the cleaning member 42 of the roller brush 4, so that the comb teeth 61 of the comb member 6 can extend into the bristles 41 of the cleaning member 42, the contact surface of the comb member 6 with the cleaning member 42 of the roller brush 4 is reasonable, the tooth tip 618 does not directly extend forward to the bristles of the roller brush and form line contact with the bristles, the probability that the friction caused by the tooth tip and the bristles are serious and even form obvious tooth marks is reduced, the comb teeth 61 of the comb member 6 are downwards combed 41 along the tangential direction or the direction parallel to the tangent line of the cleaning member 42 of the roller brush 4, the wound on the surface of the roller brush 4 and the dirt hidden at the root of the bristles 41 can be effectively scraped and stripped, meanwhile, the resistance of the roller brush is not increased, and the rotation resistance of the driving roller brush is greatly reduced, and the problem of the driving resistance of the roller brush is greatly is reduced.

When the dirt sucking fan works, the air flow passes through the dirt sucking opening to form a wind pressure area, the area between the part, above the dirt sucking opening, of the front surface of the carding piece 6 and the lower surface 54 of the dirt scraping piece 5 and the roller brush does not correspond to the dirt sucking opening, and the area is full of bristles, so that the air flow cannot pass through and reach, and a suction negative pressure area 500 is formed in the area. As shown in fig. 9, the scraping member 5 presses the scraping cleaning member 42, under the negative pressure environment, the dirty liquid is scraped and collected to a certain degree in the suction negative pressure area between the lower part of the scraping member 5 and the front surface of the carding member 6, a larger water pressure is generated, so that the liquid flows into the guide sections of the comb teeth and is divided into a plurality of liquid flows into the guide sections by the guide sections of the comb teeth, the water pressure is further increased in the moment between the guide sections of the comb teeth, therefore, the wind or dirt stripped from the cleaning member by the comb teeth is washed under the action of the plurality of liquid flows with the increased water pressure, the liquid flows to the penetrating section at the dirt suction opening through the area where the front tooth surface of the comb teeth is in line contact with the cleaning member of the roller brush, thereby ensuring that the wind is not remained in the gaps of the comb teeth, not only solving the problem that the roller brush is wound and the problem that the wind such as the wind is wound between the gaps of the comb teeth, but also ensuring that the dirty liquid, The winding matters such as dirt and hair can flow to the gap of the comb teeth at the dirt absorbing port rapidly, and the winding matters are smoothly absorbed into the dirt absorbing port under the action of larger wind pressure, so that the dirt absorbing efficiency is improved, and the dirt absorbing effect is improved. In this embodiment, the mounting section 51 is disposed above the central axis EF of the roller brush 4, a transition section 53 is further disposed between the mounting section 51 and the suspension section 52, and the suspension section 52 is disposed obliquely downward along the diameter direction of the roller brush 4 and is in contact with the cleaning member, so that the mounting section 51 and the suspension section 52 are smoothly connected by the transition section 53, and the fixing portion 63 of the carding member 6 is attached to the mounting section. The suspended section 52 is at least partially arranged above the comb teeth 61, the front end 521 of the suspended section 52 of the dirt scraping member 5 is located in front of the tooth tips 618 of the penetrating section 611, the tooth tips 618 are tangential to the cleaning member 42 of the roller brush 4, and a leeward region through which the air flow cannot pass is formed in the region between the partial lower surface 54 of the dirt scraping member 5, the partial front surface of the comb member 6 and the outer surface of the roller brush 4, and this region forms the suction negative pressure region 500. Since the comb 61 and the guide groove 614 extend up to the dirt-scraping member 5, the front surface of the comb 6 includes the front tooth surface 616 of the comb 61 and the guide groove 614, and the guide groove 614 is formed such that the gap 613 extends up to the lower surface of the dirt-scraping member 5 through the connection portion 62. Therefore, the front tooth surface 616, the guide groove 614, and the lower surface 54 of the dirt scraping section 5 of the comb teeth and the outer surface of the roller brush 4 form a suction negative pressure region. When the surface cleaning device cleans, the clean water tank supplies water to the roller brush or the surface to be cleaned, the water enters the water supply port on the ground brush from the water distribution part and flows out to the roller brush through the water supply port, the roller brush is wetted, the roller brush rotates to clean the surface to be cleaned, the dirt suction fan is started, the ground scraping strip scoops dirt and dirt liquid on the surface to be cleaned, under the influence of rotation of the roller brush, the dirt suction nozzle is formed by the gap between the ground scraping strip and the roller brush, the scooped dirt and dirt liquid are sucked into the suction nozzle under the influence of rotation of the roller brush, and move towards the dirt suction port under the guide action of the rear tooth surface of the inclined set of the comb teeth, at the moment, a part of the dirt liquid and dirt are absorbed by the cleaning piece and the brush hair on the roller brush or move upwards along with the roller brush, the comb piece contacts with the roller brush, the tooth tips are tangential with the cleaning piece of the roller brush, the comb teeth extend into the brush hair brush, and the windings such as dirt and hair on the cleaning piece are peeled off from the roller brush by the comb teeth, The cleaning piece of the roller brush is scraped by the scraping piece, dirt and dirt liquid on the cleaning piece of the roller brush are scraped by the scraping piece, simultaneously the winding scraped by the comb teeth is continuously scraped by the scraping piece, a small amount of winding which is not completely stripped is completely stripped and falls along with liquid flow, simultaneously, as the front end of the scraping piece is positioned in front of the tooth tip of the penetrating section, the tooth tip of the comb teeth is tangential to the cleaning piece of the roller brush, the comb teeth extend into the brush hair, the front surface of the comb teeth is obliquely arranged, the oblique direction of the front surface of the comb teeth is coincident with a tangent line formed by a tangent point, and when the dirt suction fan works, air flow cannot pass through the area, which is positioned above a dirt suction port, and therefore, the areas are leeward areas, the leeward areas form negative pressure areas of the air flow, the lower surface 54 of the suspending section, The front tooth surface 616 of the comb 61 and the gap between the guide groove 614 and the outer surface of the roller brush form a suction negative pressure area of air flow, the dirt scraping member extrudes the dirt scraping cleaning member, under the negative pressure environment, the dirt liquid is scraped and gathered to a certain extent in the suction negative pressure area between the lower part of the dirt scraping member and the front surface of the carding member, and a larger water pressure is generated, so that the dirt liquid is wrapped and clamped with the wound matters such as the hair completely stripped by the dirt scraping member, the dirt is gushed to the area of the guide section of the comb under the larger water pressure effect formed by the gravity and the extrusion force of the dirt scraping member, and is divided into a plurality of liquid flows into the guide grooves between the guide sections by the guide section of the comb, and the liquid is wrapped and clamped with the dirt under the guide effect of the guide section of the comb, The wind materials such as hair enter the diversion trenches between the diversion sections, and as the diversion trenches form narrow pipes, the instantaneous water pressure in the diversion trenches is further increased, and the flow speed is accelerated, so that the wind materials or dirt peeled off from the cleaning piece by the comb teeth are washed down under the action of a plurality of liquid flows with increased water pressure, the wind materials such as dirt near the diversion sections and the peeled and loosened hair are washed down by the liquid flows, and move to the gap of the penetrating sections of the comb teeth, under the action of the dirt suction fan, the gap of two adjacent penetrating sections forms a slit effect area at the dirt suction opening, the wind pressure of the instantaneous slit effect area is increased, unbalanced airflow is generated at the dirt suction opening, the wind materials such as hair and the like are washed down, Dirt and dirty liquid are smoothly sucked into the dirt suction opening under the action of larger wind pressure of unbalanced airflow, so that the dirt and dirty liquid on the surface to be cleaned are sucked into the dirt suction opening, the dirty liquid, dirt and winding matters adhered on the polluted roller brush are scraped off and sucked into the dirt suction opening, the roller brush continuously rotates, the surface to be cleaned is further cleaned, the surface cleaning device cleans the dirt, the dirty liquid, the winding matters such as hair and the like on the surface to be cleaned, meanwhile, the roller brush is cleaner, the roller brush is in contact with the surface to be cleaned each time, secondary pollution is avoided, the comb tooth structure is matched with the dirt scraping piece, the effect of stripping the winding matters such as hair is good, the winding matters such as hair are prevented from winding on the roller brush, meanwhile, the suction effect of the winding matters such as hair is obviously improved, the dirt suction efficiency is high, and therefore the overall cleaning effect of the surface cleaning device is greatly improved, and the cleaning efficiency is improved.

Of course, it can be understood that the sewage suction fan and the battery pack can also be installed in a shell to form an independent power source system 12, the power source system 12 is detachably installed on the machine body 1, the shell of the power source system 12 is correspondingly provided with an air inlet duct and an air outlet duct, the air inlet duct is communicated with a sewage containing barrel on the machine body, the sewage containing barrel is detachably installed on the machine body, the machine body is provided with a limiting surface for limiting the barrel wall of the sewage containing barrel, the limiting surface and the sewage containing barrel form a gap, the machine body is provided with an air outlet, the air outlet duct is communicated with the interior of the machine body, air discharged by the sewage suction fan is discharged through an air outlet arranged on the machine body, the air outlet is communicated with the limiting surface and the sewage containing barrel form a gap, so that air is discharged from the machine body through the gap between the air outlet and the limiting surface, or the water tank can also be arranged on a ground brush and positioned in a containing cavity, the bottom surface of the tooth socket can also be formed by a middle low front and two sides high inclined surface, or the tooth socket is a convex bottom surface of the tooth socket, as shown in the invention, and the tooth socket is not shown in the top surface of the invention, and the top surface is not shown in the graph of the top surface of the invention, and the top surface is not shown in the graph, and the top surface is shown in the graph of the top surface is shown.

Embodiment two:

The difference between the present embodiment and the first embodiment is that the roller brush is a single roller brush and the structure of the comb teeth is different.

As the surface cleaning apparatus according to the present invention, as shown in FIGS. 12 to 14, the roller brush 4 includes a hollow roller 43, And shelter from the cleaning member at roller 43 surface, the cleaning member includes brush hair 41 and cleaning member 42, in this embodiment, still be equipped with changeover portion 53 between installation section 51 and the unsettled section 52, installation section 51 sets up the top of the central axis EF of roller brush 4, unsettled section 52 sets up with the central axis EF coincidence of roller brush, the connecting portion 62 and the installation section laminating of carding member 6 set up, changeover portion 53 is with installation section 51 and unsettled section 52 smooth connection, unsettled section 52 at least part sets up in the top of broach 61, unsettled section 52 is located the top of the central axis EF of roller brush 4 to with the central axis EF parallel arrangement of roller brush 4. As shown in fig. 14, the portion between J1 and J2 is a guide section of the comb teeth, the portion between J2 and J3 is a penetrating section of the comb teeth, the lower end of the connecting portion 62 is lower than the upper end of the dirt absorbing port 24 so that the comb teeth 61 at least partially shield the dirt absorbing port 24, the lower end of the connecting portion 62 between two adjacent guide sections 612 is provided with a guide groove 614, and the guide groove 614 is formed by extending the gap 613 upwards along the connecting portion 62. The through section 611 is disposed at the lower part of the comb 61, and the tooth grooves, that is, the guide grooves 614, do not extend to the dirt scraping member, but extend to the front surface of the comb 6, that is, the comb 61 is not disposed on the front surface of the comb 6, but the connecting portion 62 of the comb 6 extends forward to the upper part of the comb 61 and is attached to the suspended section 52 of the dirt scraping member 5, the comb is connected with the suspended section 52 of the dirt scraping member 5 by the connecting portion 62, and the front side surface of the connecting portion 62 forms a drainage surface for guiding the liquid flow downward, so that the front surface of the comb 6 in this embodiment includes a drainage surface 621 formed by the front side surface of the connecting portion 62, The front tooth surfaces 616 of the teeth 61 and the groove bottom surfaces of the guide grooves 614 form leeward areas, which are not penetrated by the air flow, in the areas between the lower surface 54 of the dirt scraper 5, the front surface of the comb 6, the guide grooves 614 and the outer surface of the roller brush, which areas form the suction vacuum zone 500. as shown in fig. 14, the suction negative pressure area of the present embodiment is formed by the lower surface 54 of the suspended section 52, the drainage surface 621, the front tooth surface 616 of the comb teeth 61, and the gap between the groove bottom surface of the guide groove 614 and the outer surface of the roller brush. The liquid flow formed by the dirt liquid scraped by the scraping strip is guided by the guiding surface, dirt or/and windings stripped from the roller brush by the scraping strip are wrapped and clamped to be flushed to the comb teeth, then the dirt or/and windings are blown by the guiding groove, the air flow in the guiding area and the guiding groove is a back air area through which the air flow cannot pass, namely a suction negative pressure area is formed, therefore, the water pressure of the liquid flow in the guiding area is improved, a narrow pipe effect is generated when the liquid flow passes through a narrow area of the guiding groove, the water pressure is instantaneously increased, the dirt and/or windings are wrapped and clamped by the liquid flow to flow from the guiding groove of the guiding section, the dirt and/or/and windings are smoothly fed into the gaps of the penetrating section, a slit effect is formed between the gaps of the comb teeth corresponding to the dirt sucking opening, the slit effect area is formed between the gaps of the comb teeth corresponding to the dirt sucking opening, the air pressure of the slit effect area is increased under the action of the dirt sucking fan, the air speed is increased, the suction force is increased, the dirt or/and the windings are wrapped by the liquid flow to the slit effect area, and the dirt is sucked into the dirt sucking opening rapidly.

As shown in fig. 14, in this embodiment, the rear tooth surface 617 is disposed obliquely downward along the connection portion 62, where the angle between the rear tooth surface and the horizontal plane is θ, that is, the angle between the rear tooth surface and the horizontal plane is θ, which is 30 ° or less than or equal to θ or less than 35 °, and under the guiding action of the angle θ of the rear tooth surface, the dirt liquid and the dirt are easier and harder to move to the vicinity of the dirt absorbing port, and this angle exactly conforms to the angle formed by the dirt absorbing hose passing through the accommodating cavity from the dirt absorbing port to the rear portion of the accommodating cavity and being connected with the dirt absorbing pipe on the dirt accommodating barrel. In this embodiment, a=83°, θ=32°. In this embodiment, the tooth width b=1.5 mm of the comb teeth, the interval l=1 mm between two comb teeth, which ensures that the clearance between the penetrating segments of the comb teeth shielding the dirt absorbing mouth is reasonable, and also ensures the area of the slit effect area, and ensures that enough wind pressure can be generated at the position, so as to improve the suction force, the generated suction force is enough to be greater than the adhesive force of dirt or winding or dirt liquid, and the clamping force of the winding or larger particles clamped between the two comb teeth, thereby being more beneficial to the dirt entering the dirt absorbing mouth through the clearance of the comb teeth smoothly. The height h=1mm of the comb teeth shielding the dirt absorbing mouth downwards, and the ratio of the effective area S of the slit effect area to the equivalent area S ₀ of the dirt absorbing mouth is 2,h/H and is 0.2. The comb teeth formed by the scheme are smaller, so that obvious tooth marks are not generated on the cleaning piece, the movement resistance of the roller brush is smaller, the length of the comb teeth is enough to stretch into the bristles to process windings, the length of the shielding dirt suction opening is smaller, the surface cleaning device is small in blocking of larger dirt sucked from the surface to be cleaned, the larger garbage on the surface to be cleaned can be processed, a certain slit effect can be formed at the dirt suction opening, and the cleaning suction effect of dirt or dirt liquid or windings scraped by the comb teeth and the dirt scraping piece is better.

Of course, it can be understood that a carding piece can be adopted, the bottom surface of the tooth groove is not higher than the top surface of the dirt absorbing opening, as shown in fig. 15, the bottom surface of the tooth groove is a cambered surface bent downwards, or the carding piece comprises a fixing part, a connecting part and comb teeth, the comb teeth only comprise penetrating sections, no diversion sections are arranged, as shown in fig. 16, no diversion groove is arranged on the connecting part, the front end of the connecting part extends forwards, the top surface of the connecting part is attached to the suspended section of the dirt scraping piece, the front end of the suspended section of the dirt scraping piece protrudes out of the front end of the connecting part, the front surface of the connecting part forms the comb teeth and the drainage surface of the dirt scraping piece, the tooth groove of the comb teeth is horizontally arranged, the bottom surface of the tooth groove of the comb teeth is a plane, and the bottom surface of the tooth groove of the comb teeth is flush with the upper top surface of the dirt absorbing opening. As long as the comb teeth partially shield the dirt absorbing mouth, and the gaps of the comb teeth can form a slit effect, the method plays a role in well treating the wound such as hair and the like, and can generate increased wind pressure to absorb the wound, the dirt liquid and the dirt into the dirt absorbing mouth well, the technical scheme for improving the dirt absorbing effect without departing from the concept of the invention is within the protection scope of the invention, and no one-to-one example is provided.

Other structures and beneficial effects of the embodiment are the same as those of the embodiment, and are not described in detail herein.

Embodiment III:

The difference between the present embodiment and the second embodiment is that the structure and the mounting position of the dirt scraping member and the carding member are different

In this embodiment, the dirt scraping member 5 only includes the suspending section 52 and the mounting section 51, and does not include the transition section, and a spacer 9 is disposed between the carding member 6 and the dirt scraping member 5, so that dirt scraped by the dirt scraping member flows through the spacer 9 and the tooth slot in sequence. As shown in fig. 17, the carding member 6 is not attached to the dirt scraping member, a clamping groove is formed in the first protrusion 222, the carding member 6 is disposed in the clamping groove, the dirt scraping member 5 is disposed above the first protrusion 222 and is located on the water diversion plate 8, so as to be clamped by the first protrusion 222 and the water diversion plate 8, and a spacing area 9 between the carding member and the dirt scraping member is formed on the front side surface of the first protrusion. The interval area is larger with the surface clearance of roller brush, and the dirty liquid and the winding thing such as filth or hair that scrape down from scraping dirty piece have more buffer memory space for dirty liquid, filth etc. can rely on gravity to wash winding thing such as hair to the carding position, thereby pass the clearance between the broach again with winding thing such as hair and get into the dirt absorbing mouth, simultaneously, owing to be equipped with the dirt absorbing fan on the surface cleaning device, dirt absorbing fan work, interval area 9 forms the negative pressure more easily for the water pressure of liquid flow in this region increases, then the decurrent to guiding gutter department of being easier, and form the slot effect in the guiding gutter, the water pressure in the guiding gutter further increases, and the velocity of flow increases, and then dirty liquid is wrapped up in and is taken the winding thing such as filth and hair and can be easy pass the guiding gutter, smoothly gets into the clearance between the broach, and pass the clearance between the broach fast, better is inhaled the dirt absorbing mouth.

It will be readily appreciated by a person skilled in the art that the scope of the application is not limited to the preferred embodiments described above. The technical solutions in the above preferred embodiments can be split and combined by those skilled in the art without departing from the technical principles of the present application, and equivalent changes or substitutions can be made to related technical features, so any changes, equivalent substitutions, improvements, etc. made within the technical principles and/or technical concepts of the present application will fall within the protection scope of the present application.

Claims

1. The utility model provides a surface cleaning device that suction is good, includes the scrubbing brush that has the dirt absorbing mouth, with the articulated fuselage of scrubbing brush, dirt absorbing fan, be equipped with on the scrubbing brush be used for the cleaning to wait to clean the roller brush of surface and be used for cleaning up dirt scraping piece and the carding piece of roller brush, dirt scraping piece and carding piece from the top down locate in proper order the top of dirt absorbing mouth, a serial communication port, carding piece is equipped with a plurality of broachs, is formed with the clearance between two adjacent broachs, carding piece still includes the connecting portion of upper portion connection with the broach at least, the broach upwards extends along the front surface of connecting portion, and the thickness of broach reduces gradually to the front end parallel and level with connecting portion, the broach extends downwards at least partially, so that the clearance is located at least partially between dirt absorbing mouth and the roller brush and forms slit effect district.

2. The surface cleaning apparatus of claim 1 wherein the width of the comb teeth is b, the spacing between two adjacent comb teeth is L, wherein b > L, and the spacing L satisfies 0.7mm +.l <1.5mm.

3. The surface cleaning apparatus of claim 1 wherein the effective area of the slot effect region is S and the equivalent area of the soil pick-up port is S ₀, wherein 2.ltoreq.s/S ₀.ltoreq.12.

4. The surface cleaning apparatus of claim 1, wherein the dirt suction opening is flat, a top of the dirt suction opening is not lower than a central axis of the roller brush, a height of the gap covering the dirt suction opening is H, and a height of the dirt suction opening is H, wherein 0.2.ltoreq.h/h.ltoreq.0.25.

5. The surface cleaning apparatus of claim 1 wherein the lower end of the connection is positioned below the top of the dirt pickup opening.

6. The surface cleaning apparatus of claim 1, wherein the connecting portion is provided with a flow guide groove, and the flow guide groove is disposed corresponding to the gap.

7. The surface cleaning apparatus of claim 6, wherein the channel is formed by a gap extending upwardly along the connection portion.

8. The surface cleaning apparatus of claim 6, wherein the channel is formed by a gap extending upwardly through the connection portion to a lower surface of the dirt-scraping section.

9. The surface cleaning apparatus of claim 1 wherein the comb teeth extend at least partially into the bristles of the roller brush, the comb teeth are at least partially below the central axis of the roller brush, and the leading tooth surfaces of the comb teeth extend downwardly along the periphery of the roller brush.

10. The surface cleaning apparatus of claim 1 wherein the dirt scraping element and the combing element each interfere with the roller brush, the front end of the dirt scraping element being forward of the front surface of the combing element, and the gaps between the front surface of the combing element, the lower surface of the dirt scraping element and the outer surface of the roller brush forming a suction negative pressure zone.