Double-rolling-brush floor brush assembly and cleaning equipment

Abstract

The utility model discloses a double-rolling-brush floor brush assembly and cleaning equipment. The double-rolling-brush floor brush assembly comprises a shell, a first rolling brush installed on the front portion of the shell and a second rolling brush installed on the rear portion of the shell. The first rolling brush is driven by a motor to rotate, the second rolling brush is controlled by a one-way clutch, so that the rolling brush can only rotate in a single direction, and the rotating directions of the first rolling brush and the second rolling brush are opposite; in the cleaning process, the first rolling brush keeps rotating all the time, when the shell moves towards the first rolling brush, the one-way clutch of the second rolling brush is controlled to be in a non-return state, the second rolling brush stops rotating, and the surface of the second rolling brush rubs against the cleaned surface and wipes and sweeps the cleaned surface. When the shell moves towards the second rolling brush, the one-way clutch of the second rolling brush is controlled to be in an overrunning state, and the second rolling brush passively rotates by means of friction force generated by the second rolling brush and the cleaned surface. The double-rolling-brush floor brush assembly and the cleaning equipment have the advantages of being good in cleaning effect, low in cost, low in power consumption and the like.

Description

Technical Field

[0001] The utility model relates to the field of cleaning electrical appliances, in particular to a floor brush assembly with double roller brushes and a cleaning device. Background Art

[0002] At present, cleaning equipment with roller brushes, such as floor scrubbers, vacuum cleaners, and floor washers, have become more and more widely used in people's homes. They usually include an electric roller brush, which uses a high-speed rotating roller brush to roll dirt into a dirt collection container or uses a roller brush to raise dust and vacuum suction to suck dirt into a dirt collection container.

[0003] With the development of technology, double roller brush cleaning equipment has also appeared. However, double roller brush cleaning equipment has the disadvantages of high cost and high power consumption. At the same time, because the electric roller brush needs to rotate at high speed, it cannot be too close to the ground, otherwise it will drive the body and affect the control. Therefore, the electric roller brush cylinder usually has a certain gap from the ground, and relies on the bristles on the surface of the roller brush to roll up the dirt. However, the problem is that it will cause the roller brush to have insufficient downward pressure on the ground, and the cleaning effect on stubborn stains on the ground is poor, and dirt is easily missed. Utility Model Content

[0004] In order to solve at least one of the above technical problems, the purpose of the present invention is to provide a double roller brush floor brush assembly, which is used to solve the problem that the double roller brush floor brush assembly in the prior art has insufficient cleaning ability for stubborn stains, and also has the characteristics of low cost and low power consumption.

[0005] Another object of the present invention is to provide a cleaning device, comprising the aforementioned double roller brush floor brush assembly.

[0006] In order to achieve the above-mentioned object, according to one aspect of the utility model, a double roller brush floor brush assembly is provided, comprising a housing, a first roller brush installed at the front of the housing, and a second roller brush installed at the rear of the housing;

[0007] The first roller brush is driven to rotate by a motor, and the second roller brush is controlled by a one-way clutch so that the roller brush can only rotate in a single direction, and the rotation directions of the first roller brush and the second roller brush are opposite;

[0008] During the cleaning operation, the first roller brush keeps rotating all the time. When the housing moves toward the first roller brush, the one-way clutch controlling the second roller brush is in a reverse stop state, so that the second roller brush stops rotating, and the surface of the second roller brush rubs against and wipes the surface to be cleaned.

[0009] When the housing moves toward the second roller brush, the one-way clutch controlling the second roller brush is in an overrunning state, and the second roller brush passively rotates by means of the friction force generated with the surface to be cleaned.

[0010] Furthermore, it also includes a dirt collecting box installed in the shell, the dirt collecting box is provided with an opening, and the first roller brush rolls the dirt on the surface to be cleaned into the dirt collecting box through the opening.

[0011] Furthermore, a roller brush cleaning piece is provided on the surface of the first roller brush. The position of the roller brush cleaning piece is higher than the opening of the dirt collecting box, and is used to remove dirt on the surface of the first roller brush and drop it into the dirt collecting box.

[0012] Furthermore, the surface of the first roller brush is provided with a water squeezing member for squeezing excess water from the surface of the first roller brush.

[0013] Furthermore, a dirt guide surface is provided between the first roller brush and the dirt collection box, and the lower edge of the dirt guide surface contacts the cleaned surface, so as to guide the dirt to the opening of the dirt collection box in cooperation with the first roller brush.

[0014] Furthermore, the dirt guide surface is made of a flexible and resilient material, and the dirt guide surface is an arc surface that matches the arc shape of the first roller brush surface.

[0015] Furthermore, an air inlet cavity is provided between the first roller brush and the second roller brush for sucking dirt into a dirt collecting container.

[0016] Furthermore, the bottom surface of the housing has two air guide grooves, namely a first air guide groove and a second air guide groove, both of which are V-shaped, and their bottoms are open and face the cleaned surface;

[0017] The wide end opening of the first air guide groove faces the first roller brush, the wide end opening of the second air guide groove faces the second roller brush, and the air inlet cavity is located between the narrow ends of the first air guide groove and the second air guide groove, and is connected to the two air guide grooves;

[0018] A first scraper is provided on the lower edge of the two side walls of the first air guide groove, and a second scraper is provided on the lower edge of the two side walls of the second air guide groove. Both the first scraper and the second scraper are V-shaped, and are used to remove dirt on the ground and guide it to the narrow end of the air guide groove. Under the action of the airflow, the dirt is sucked into the air inlet cavity and collected in the dirt collecting container.

[0019] Furthermore, the cross section of the air inlet cavity is narrow at the top and wide at the bottom, and a partition movable in the front-rear direction is provided in the air inlet cavity, and the cross section is also narrow at the top and wide at the bottom, and the partition has a front bevel and a rear bevel;

[0020] A friction member is combined below the separator, and the friction member contacts the surface to be cleaned, and utilizes the friction force generated with the surface to be cleaned to drive the separator to move;

[0021] During the cleaning operation, when the shell moves forward, the friction between the friction member and the cleaned surface causes the partition to move backward relative to the shell, at which time the gap between the rear inclined surface of the partition and the rear wall surface of the air inlet cavity is reduced or closed, and the gap between the front inclined surface and the front wall surface of the air inlet cavity is increased, thereby forming a first dirt suction channel with an opening facing forward in the air inlet cavity;

[0022] On the contrary, when the shell moves backward, the friction between the friction part and the cleaned surface causes the partition to move forward relative to the shell, the gap between the front inclined surface of the partition and the front wall surface of the air inlet chamber is reduced or closed, and the gap between the rear inclined surface and the rear wall surface of the air inlet chamber is increased, thereby forming a second sewage suction channel with its opening facing backward in the air inlet chamber.

[0023] In addition, according to one aspect of the utility model, a cleaning tool is provided, comprising the double roller brush floor brush assembly described in any one of the aforementioned embodiments.

[0024] Compared with the prior art, the embodiments according to one aspect of the present invention have at least the following advantages or beneficial effects:

[0025] Since the first roller brush is an electric roller brush, dirt and sewage are rolled up by the bristles of the high-speed rotating roller brush and are more easily rolled into or sucked into the sewage collection container. At the same time, since there is a certain gap between the first roller brush and the ground, when moving along the cleaning path, the rotating roller brush will roll in the sewage on the ground, and will not push the sewage forward like the second roller brush close to the ground. Compared with the passively rotating second roller brush, the electrically driven first roller brush can also be provided with a water squeezing component with greater pressure on the roller brush surface, which has a better cleaning effect for scenes with more sewage;

[0026] When the shell moves toward the direction of the first roller brush, the second roller brush is in a non-returning state. Since the second roller brush does not need to rotate at a high speed, it can support the main weight of the shell together with the auxiliary roller arranged on the bottom surface of the shell, which has a pressurizing effect on the ground. The surface of the stopped second roller brush is in sliding friction with the ground, and it is close to and wipes the ground, which is equivalent to wiping the ground with a rag, and has a better cleaning effect on stubborn stains and wet hair. The rotation of the first roller brush will generate a forward force, which can overcome the friction resistance between the second roller brush and the ground, making the forward movement of the shell more labor-saving.

[0027] When moving toward the direction where the second roller brush is located, the second roller brush is in a surpassing state, the rolling second roller brush has a small friction resistance, and can roll over the garbage without pushing the garbage away;

[0028] Since the second roller brush is controlled by a one-way clutch, no motor or transmission mechanism is required, which is lower in cost and does not consume electricity;

[0029] In addition, because the second roller brush wipes the stubborn stains and residual sewage on the ground, the first roller brush only needs to take on the task of removing the dirt and sewage that are not firmly attached to the ground. The installation height of the roller brush can be appropriately increased, and the contact pressure between the roller brush bristles and the ground can be reduced, thereby reducing the wear of the high-speed rotating roller brush bristles, increasing the roller brush life, and also reducing the power consumption of the roller brush. When moving toward the second roller brush, the movement resistance caused by the reverse rotating first roller brush is also reduced.

[0030] To sum up, with the collaboration of two different types of roller brushes, they support each other functionally, overcome their respective shortcomings, and achieve better cleaning effects and better user experience than a single type of double roller brush.

[0031] Additional aspects and beneficial effects of the present invention will become apparent in the following description or will be understood through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of a double roller brush floor brush assembly provided according to an embodiment of the utility model;

[0033] Figure 2 is a bottom view schematic diagram of a double roller brush floor brush assembly provided according to another embodiment of the utility model;

[0034] Figure 3 yes Figure 2 A schematic diagram of the exploded structure of the double roller brush floor brush assembly provided;

[0035] Figure 4 yes Figure 2 A cross-sectional schematic diagram of the air inlet cavity and the partition when the double roller brush floor brush assembly is moved in one direction is provided;

[0036] Figure 5 yes Figure 4 A schematic cross-sectional view of the air inlet cavity and the partition when the middle double roller brush floor brush assembly moves in another direction.

[0037] in, Figures 1 to 5 The corresponding relationship between the reference numerals and the component names is as follows:

[0038] 1 housing; 10 upper housing cover; 11 plug plate; 12 ball plunger; 2 dirt collecting box; 20 side plate; 200 water squeezing roller; 202 bottom plate; 203 comb teeth; 204 dirt collecting box opening; 21 first roller brush; 22 second roller brush; 221 one-way bearing; 23 filter screen; 241 first air guide slot; 242 second air guide slot; 251 first scraper strip; 252 second scraper strip; 26 air inlet chamber; 261 front wall surface; 2610 first dirt suction channel; 262 rear wall surface; 2620 second dirt suction channel; 263 partition; 2631 front inclined surface; 2632 rear inclined surface; 264 friction member; 27 auxiliary roller; 28 water outlet; 3 water tank seat; 31 water tank; 32 push rod installation interface. DETAILED DESCRIPTION

[0039] In order to more clearly understand the above-mentioned purposes, features and advantages of the utility model, the utility model is further described in detail below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all of the embodiments. The utility model can also be implemented in other ways different from those described herein, and, in the absence of conflict, the embodiments of the utility model and the features in the embodiments can be combined with each other. Therefore, the protection scope of the utility model is not limited to the specific embodiments disclosed below.

[0040] The terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, but are not necessarily used to describe a specific order or sequence, and do not limit the "first" to be followed by a "second" or more objects.

[0041] In the present invention, unless otherwise specified, directional words such as "up, down, top, bottom, front, back" are usually used with reference to the directions shown in the drawings, or with reference to the components themselves in the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above directional words are not used to limit the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" shall be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a movable connection, or an integral connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0044] According to some embodiments of the present invention, Figure 1 As shown, a double roller brush floor brush assembly for a floor scrubber is provided, comprising a housing, a first roller brush 21 mounted on the front of the housing, and a second roller brush 22 mounted on the rear of the housing;

[0045] The first roller brush 21 is driven to rotate by a motor, and the second roller brush 22 is controlled by a one-way clutch, so that the roller brush can only rotate in a single direction, and the rotation directions of the first roller brush 21 and the second roller brush 22 are opposite;

[0046] The one-way clutch can be any mechanism with a one-way control function, such as a one-way bearing, a ratchet, etc. In this embodiment, it is preferably a one-way bearing 221 located at the shaft end of the second roller brush 22;

[0047] During the cleaning operation, the first roller brush 21 always keeps rotating. When the local brush assembly moves toward the first roller brush 21, the one-way bearing 221 of the second roller brush is controlled to be in a non-return state, so that the second roller brush 22 stops rotating, and the surface of the second roller brush 22 rubs against and wipes the surface to be cleaned.

[0048] Since the second roller brush 22 does not need to rotate at a high speed, it can support the main weight of the housing together with the auxiliary roller 27 arranged on the bottom surface of the housing, exerting a pressure on the ground, and the surface of the stopped second roller brush 22 is in sliding friction with the ground, and it is closely attached to and wipes the ground, which is equivalent to wiping the ground with a rag, and has a better cleaning effect on stubborn stains and wet hair;

[0049] When the ground brush assembly moves toward the second roller brush 22, the one-way clutch controlling the second roller brush 22 is in an overrunning state, and the second roller brush 22 passively rotates by means of the friction force generated with the surface to be cleaned;

[0050] Inside the housing, a dirt collecting box 2 is installed, and the dirt collecting box 2 has an opening 204. A dirt guiding surface 205 is provided on the side of the dirt collecting box 2 facing the first rolling brush 21. Preferably, the dirt guiding surface 205 is made of a flexible and resilient material, such as sponge, foam rubber, etc. In this embodiment, it is preferably a sponge material covered with a silicone sheet on the surface. The dirt guiding surface 205 is arc-shaped and matches the arc shape of the surface of the first rolling brush 21. Its lower edge contacts the surface to be cleaned, and is used to scrape garbage and sewage. Under the hoisting action of the bristles on the surface of the rotating first rolling brush 21, the garbage and sewage are guided to the opening 204 of the dirt collecting box;

[0051] Since the dirt guide surface 205 is made of a flexible and resilient material, when large particles of solid waste enter the gap between the surface of the first roller brush 21 and the dirt guide surface 205, the dirt guide surface 205 is deformed, and the large particles of solid waste can continue to move upward under the action of the friction between the bristles of the first roller brush 21 and the dirt guide surface 205, instead of being stuck in the gap;

[0052] Furthermore, a roller brush cleaning member is provided on the surface of the first roller brush 21, which is used to remove dirt attached to the surface of the first roller brush 21 and drop it into the dirt collection box opening 204. The roller brush cleaning member can be a brush, or a scraper bar or comb teeth. In this embodiment, the roller brush cleaning member is preferably a comb tooth 203 that contacts the surface of the roller brush 21 and is located higher than the opening 204.

[0053] Furthermore, a water squeezing member is provided on the surface of the first roller brush 21, and the water squeezing member is preferably a rotatable water squeezing roller 200, which contacts and pressurizes the surface of the roller brush 21, and passively rotates under the drive of the rotating first roller brush 21, so as to squeeze excess water from the surface of the first roller brush 21 and drop it into the dirt collecting box 2.

[0054] Compared with the wiper blade in the prior art, the round and rotatable water squeezing roller has smaller friction resistance with the roller brush while maintaining the water squeezing pressure, which can reduce the power consumption when the electric roller brush rotates, and can also reduce the wear of the roller brush and extend the service life of the roller brush.

[0055] Furthermore, according to some embodiments of the present invention, electrically driven running wheels are also included.

[0056] The electrically driven walking wheel can replace the auxiliary roller to support the shell and provide power assistance at the same time, or when the floor brush assembly is used as a component of the cleaning robot, the cleaning robot can have the ability to walk, retreat, and turn through the rotation of the walking wheel.

[0057] According to some embodiments of the present invention, Figure 2 , Figure 3 As shown, a double roller brush floor brush assembly for a cleaning device with vacuum suction is provided, comprising a housing 1, and a first roller brush 21 and a second roller brush 22 installed in the front-rear direction of the housing 1;

[0058] The first roller brush 21 is driven to rotate by a motor, and the second roller brush 22 is controlled by a one-way clutch, so that the roller brush can only rotate in a single direction, and the rotation directions of the first roller brush 21 and the second roller brush 22 are opposite;

[0059] Since the first roller brush 21 is a high-speed rotating electric roller brush, it can roll up the dirty sewage, and has a better sewage suction effect under the same suction strength and air inlet structure;

[0060] The second roller brush 22 is a passively rotating one-way roller brush, which has a better cleaning effect on stubborn stains and wet hair adhering to the ground;

[0061] At the bottom of the housing 1, two air guide grooves are formed, namely a first air guide groove 241 and a second air guide groove 242, both of which are V-shaped, and their wide ends and bottoms are open, and between their two narrow ends, an air inlet cavity 26 connected with the two narrow ends is formed;

[0062] Specifically, the wide end of the first air guide groove 241 faces the first roller brush 21, and the narrow end faces the air inlet chamber 26 and is connected thereto. The bottom of the air guide groove is open and faces the cleaned surface, and the lower edges of the two side walls thereof are provided with V-shaped first scraping strips 251.

[0063] The wide end of the second air guide groove 242 faces the second roller brush 22, and the narrow end faces the air inlet chamber 26 and is connected with it. The bottom of the air guide groove is also open and faces the surface to be cleaned. The lower edges of its two side walls are provided with V-shaped second scraping strips 252; the lower edges of the first scraping strip 251 and the second scraping strip 252 are in contact with the surface to be cleaned, and at least the parts in contact with the surface to be cleaned are made of flexible wear-resistant materials, such as silicone, rubber or cotton wool materials.

[0064] When the floor brush assembly performs cleaning operations, when the housing moves in a certain direction, the airflow enters through the wide end of the air guide groove in that direction and is gathered by the V-shaped air guide groove. Since there is no bottom plate under the air guide groove and it is an open structure, the garbage and sewage on the cleaned surface are guided and gathered near the air inlet chamber 26 under the flushing of the airflow and the pushing and scraping of the V-shaped scraping strip. Moreover, since the airflow velocity near the air inlet chamber 26 is faster and the suction force is more concentrated, the gathered garbage and sewage can be easily sucked into the sewage suction channel.

[0065] Since the bottom of the air guide groove is an open structure, even if there is residual garbage and sewage, it will not be left inside the air guide groove, but will be gathered and sucked in again with the reciprocating movement of the floor brush assembly.

[0066] It can be understood that in other embodiments according to the present invention, the aforementioned V-shaped air guide grooves and V-shaped scraping strips may also be arc-shaped air guide grooves and arc-shaped scraping strips, and the arc-shaped air guide grooves and arc-shaped scraping strips should be regarded as equivalent replacements for the V-shaped air guide grooves and V-shaped scraping strips, and are also within the protection scope of the present invention.

[0067] Furthermore, if Figure 3As shown, the housing 1 includes an upper shell cover 10, and plug plates 11 are provided on both sides of the upper shell cover 10. The housing 1 is also equipped with a dirt collecting box 2, and the inside of the dirt collecting box 2 is provided with an air outlet of the air inlet cavity, and side panels 20 are provided on both sides of the dirt collecting box 2. A slot is provided between the side panel 20 and the box body, and the plug plates 11 are inserted into the slot. The upper shell cover 10 and the dirt collecting box 2 are detachably connected together through the ball head plunger 12 located on the upper shell cover 10. When the dirt collecting box 2 needs to be removed, it is only necessary to clamp the side panels 20 on both sides of the dirt collecting box with both feet, and pull the upper shell cover 10 upward with a little force, that is, the upper shell cover 10 and the dirt collecting box 2 can be separated; when installing, it is only necessary to align the plug plates 11 on both sides of the upper shell cover 10 and insert them into the slots on both sides of the dirt collecting box 2, and the ball head plunger 12 is inserted into the ball socket provided on the side panel 20, so that the upper cover shell 10 and the dirt collecting box 2 can be connected together. This loading and unloading method does not require the use of tools, and can conveniently and quickly disassemble and assemble the dirt collecting box.

[0068] Since the dirt collecting box is located inside the shell, the center of gravity of the whole machine is lower, the operation is more labor-saving, the sewage will not overflow due to the push rod being tilted, and the sewage suction channel is shorter, with better sewage suction efficiency and easier cleaning, avoiding the problem of difficult cleaning of the sewage tank and air inlet channel of traditional floor scrubbers.

[0069] Optionally, the upper shell cover 10 and the dirt collecting box 2 may also be connected by snap fastening.

[0070] Optionally, a filter 23 is provided between the upper shell cover 10 and the dirt collecting box 2, which can act as the first layer of filtration and reduce the filtering burden of the dust box of the vacuum cleaner main unit. Since solid garbage and sewage are retained in the dirt collecting box by the filter 23, the frequency of cleaning the dust box and filter of the vacuum cleaner main unit can be reduced, thereby extending the service life of the vacuum cleaner filter.

[0071] Further, according to some embodiments of the present invention, Figures 2 to 3 As shown, a water supply assembly is also included, which includes a water tank seat 3, a water tank 31, a push rod mounting interface 32, a water outlet 28 and a water delivery pipeline.

[0072] The water tank seat 3 is located above the housing 1 and is connected to the housing 1 via a universal joint;

[0073] The water tank 31 can be detachably mounted on the water tank seat. A switchable water tank ventilation switch is provided on the upper end of the water tank 31. When the water tank ventilation switch is turned on, the liquid in the water tank flows out under the action of gravity and is transported to the water outlet 28 on the bottom surface of the shell through the water delivery pipeline to wet the roller brush surface and / or the surface to be cleaned. When the water tank ventilation switch is turned off, negative pressure appears in the water tank, causing the liquid in the water tank to stop flowing out.

[0074] The water tank seat is also provided with a push rod installation interface 32 for connecting the push rod of the cleaning tool.

[0075] Since the liquid in the water tank flows out under the action of gravity, the switch of the cleaning liquid is controlled by negative pressure, and the electric water pump can be eliminated, which reduces the cost, reduces energy consumption, and has a simpler structure;

[0076] The push rod installation interface set on the water tank seat allows the floor brush assembly to be easily combined and separated from the vacuum cleaner host, thereby realizing the multi-purpose use of the vacuum cleaner host. Since there is no need to connect the circuit, it can also be conveniently used in combination with vacuum cleaner hosts with different interfaces through adapters, such as cordless handheld vacuum cleaners, wired vacuum cleaners, barrel vacuum cleaners, etc.

[0077] According to some embodiments of the present invention, Figures 2 to 5 As shown, a double roller brush floor brush assembly is provided, comprising a housing 1, a first roller brush 21 mounted on the front of the housing, and a second roller brush 22 mounted on the rear of the housing, wherein an air inlet cavity 26 is formed between the first roller brush and the second roller brush;

[0078] The cross section of the air inlet cavity 26 is narrow at the top and wide at the bottom. A partition 263 movable in the front-rear direction is provided in the air inlet cavity 26. The cross section of the partition 263 is narrow at the top and wide at the bottom. The partition has a front inclined surface 2631 and a rear inclined surface 2632.

[0079] A friction member 264 is combined below the partition 263. The friction member 264 penetrates the bottom plate 202 below the air inlet chamber and contacts the surface to be cleaned, and uses the friction between the friction member 264 and the surface to be cleaned to drive the movement of the partition 263. In order to enable the friction member 264 to move back and forth reliably, a rubbing material with a large friction coefficient, such as plush, cloth, etc., can be arranged below the friction member 264. In order to enable the friction member 264 to reliably contact the surface to be cleaned, the friction member 264 and the partition 263 can be elastically connected, and the elastic material can be used to enable the friction member 264 to float up and down relative to the partition 263 and maintain a certain pressure on the surface to be cleaned;

[0080] During the cleaning operation, when the housing 1 moves forward, Figure 4 As shown, the friction between the friction member 264 and the cleaned surface causes the partition 263 to move backward relative to the housing 1, at which time the gap between the rear inclined surface 2632 of the partition 263 and the rear wall surface 262 of the air inlet chamber 26 is reduced or closed, and the gap between the front inclined surface 2631 and the front wall surface 261 of the air inlet chamber 26 is increased, thereby forming a first dirt suction channel 2610 inclined with its opening facing forward in the air inlet chamber 26;

[0081] On the contrary, when the housing 1 moves backward, Figure 5As shown, the friction between the friction member 264 and the cleaned surface causes the partition 263 to move forward relative to the shell 1, and the gap between the front bevel 2631 of the partition 263 and the front wall 261 of the air inlet chamber 26 is reduced or closed, and the gap between the rear bevel 2632 and the rear wall 262 of the air inlet chamber 26 is increased, thereby forming a second sewage suction channel 2620 with an opening facing the rear in the air inlet chamber.

[0082] Since there is no fixed sewage suction port and sewage suction channel in the air inlet chamber, the friction between the friction piece and the cleaned surface drives the partition to move forward and backward, and the relative position of the front and rear inclined surfaces of the partition and the front and rear walls of the air inlet chamber is changed to dynamically construct a single sewage suction channel facing different directions. While ensuring the appropriate air intake area of ​​the sewage suction channel facing a certain direction, the total air intake area will not be increased, the space occupied by the traditional double suction ports is reduced, the problem of dispersion of the suction force of the double suction ports is avoided, and the sewage suction effect is enhanced;

[0083] At the same time, the narrow upper and wide lower air inlet cavity and the inclined partition naturally form an inclined sewage suction channel, which is conducive to the smooth passage of airflow and reduces airflow resistance. Sewage and garbage can be lifted along the inclined surface of the partition, which has a better sewage suction effect for sewage and heavier garbage.

[0084] The separator directly rubs against the cleaned surface through the friction piece combined below, driving the separator to move back and forth. It has a simple structure and high reliability, and is suitable for being arranged in an air inlet cavity with limited space.

[0085] According to an embodiment of one aspect of the utility model, there is provided a cleaning device, comprising any one of the double roller brush floor brush assemblies described above.

[0086] The cleaning device can be any surface cleaning device using the double roller brush floor brush assembly provided by the utility model, including but not limited to a floor scrubber, a vacuum cleaner, a floor scrubber, a glass cleaning machine, a cleaning robot, etc.;

[0087] Compared with the prior art, the cleaning device using the double roller brush floor brush assembly provided by the utility model has the characteristics of simple structure, small size, light weight, good cleaning effect, easy cleaning, and multiple uses of one machine.

[0088] The above are only a few embodiments of the utility model. To make the description concise, not all possible combinations or substitutions of the various technical features in the above embodiments are described. The above embodiments and descriptions cannot be understood as limiting the scope of the patent of the utility model. Any improvement and combination thereof shall be deemed as the protection scope of the utility model without departing from the concept of the utility model.

Claims

1. A double roller brush floor brush assembly, characterized in that: It includes a housing, a first roller brush installed at the front of the housing, and a second roller brush installed at the rear of the housing; The first roller brush is driven to rotate by a motor, and the second roller brush is controlled by a one-way clutch so that the roller brush can only rotate in a single direction, and the rotation directions of the first roller brush and the second roller brush are opposite; During the cleaning operation, the first roller brush keeps rotating all the time. When the housing moves toward the first roller brush, the one-way clutch controlling the second roller brush is in a reverse stop state, so that the second roller brush stops rotating, and the surface of the second roller brush rubs against and wipes the surface to be cleaned. When the housing moves toward the second roller brush, the one-way clutch controlling the second roller brush is in an overrunning state, and the second roller brush passively rotates by means of the friction force generated with the surface to be cleaned.

2. The double roller brush floor brush assembly according to claim 1, characterized in that: The utility model also comprises a dirt collecting box installed in the shell body, the dirt collecting box is provided with an opening, and the first rolling brush rolls the dirt on the surface to be cleaned into the dirt collecting box through the opening.

3. The double roller brush floor brush assembly according to claim 2, characterized in that: A roller brush cleaning piece is provided on the surface of the first roller brush. The position of the roller brush cleaning piece is higher than the opening of the dirt collecting box and is used to remove dirt on the surface of the first roller brush and drop it into the dirt collecting box.

4. The double roller brush floor brush assembly according to claim 2, characterized in that: The surface of the first rolling brush is provided with a water squeezing member for squeezing excess water from the surface of the first rolling brush.

5. The double roller brush floor brush assembly according to claim 2, characterized in that: A dirt guide surface is provided between the first rolling brush and the dirt collection box, and the lower edge of the dirt guide surface contacts the cleaned surface and is used to guide the dirt to the opening of the dirt collection box in cooperation with the first rolling brush.

6. The double roller brush floor brush assembly according to claim 5, characterized in that: The dirt guide surface is made of a flexible and resilient material, and is an arc surface that matches the arc shape of the first rolling brush surface.

7. The double roller brush floor brush assembly according to claim 1, characterized in that: An air inlet cavity is provided between the first roller brush and the second roller brush for sucking dirt into the dirt collecting container.

8. The double roller brush floor brush assembly according to claim 7, characterized in that: The bottom surface of the housing has two air guide grooves, namely a first air guide groove and a second air guide groove, both of which are V-shaped, and their bottoms are open and face the surface to be cleaned; The wide end opening of the first air guide groove faces the first roller brush, the wide end opening of the second air guide groove faces the second roller brush, and the air inlet cavity is located between the narrow ends of the first air guide groove and the second air guide groove, and is connected to the two air guide grooves; A first scraper is provided on the lower edge of the two side walls of the first air guide groove, and a second scraper is provided on the lower edge of the two side walls of the second air guide groove. Both the first scraper and the second scraper are V-shaped, and are used to remove dirt on the ground and guide it to the narrow end of the air guide groove. Under the action of the airflow, the dirt is sucked into the air inlet cavity and collected in the dirt collecting container.

9. The double roller brush floor brush assembly according to claim 7, characterized in that: The cross section of the air inlet cavity is narrow at the top and wide at the bottom, and a partition movable in the front-rear direction is provided in the air inlet cavity, and the cross section of the partition is also narrow at the top and wide at the bottom, and the partition has a front bevel and a rear bevel; A friction member is combined below the separator, and the friction member contacts the surface to be cleaned, and utilizes the friction force generated with the surface to be cleaned to drive the separator to move; During the cleaning operation, when the shell moves forward, the friction between the friction member and the cleaned surface causes the partition to move backward relative to the shell, at which time the gap between the rear inclined surface of the partition and the rear wall surface of the air inlet cavity is reduced or closed, and the gap between the front inclined surface and the front wall surface of the air inlet cavity is increased, thereby forming a first dirt suction channel with an opening facing forward in the air inlet cavity; On the contrary, when the shell moves backward, the friction between the friction part and the cleaned surface causes the partition to move forward relative to the shell, the gap between the front inclined surface of the partition and the front wall surface of the air inlet chamber is reduced or closed, and the gap between the rear inclined surface and the rear wall surface of the air inlet chamber is increased, thereby forming a second sewage suction channel with its opening facing backward in the air inlet chamber.

10. A cleaning device, characterized in that: A double roller brush floor brush assembly comprising any one of claims 1 to 9.

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