Floor brush assembly and cleaning equipment

Abstract

The floor brush assembly comprises a shell, an air inlet cavity formed in the bottom of the shell and a first rolling brush installed on the front portion of the shell, a V-shaped first air guide groove is formed in the bottom of the shell, the bottom of the first air guide groove is open and faces a cleaned surface, the wide end opening of the first air guide groove faces the first rolling brush, and the wide end opening of the first air guide groove faces the second rolling brush. The narrow end is communicated with the air inlet cavity; v-shaped first scraping strips are arranged on the lower edges of the two side walls of the first air guide groove, make contact with the cleaned surface and are used for removing dirt on the cleaned surface and guiding the dirt to the narrow end of the first air guide groove, and the dirt is sucked into the air inlet cavity under the action of airflow. The floor brush assembly and the cleaning equipment have the advantages of being high in dirt suction efficiency, good in cleaning effect, not prone to hiding dirt, easy to clean 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 a roller brush and a cleaning device. Background Art

[0002] At present, cleaning appliances with dirt suction capabilities, such as vacuum cleaners, sweeping robots and floor scrubbers, have become more and more widely used in people's homes. Traditional vacuum cleaners usually include a roller brush, which raises dirt through high-speed rotating roller brushes, thereby improving the efficiency of dirt suction. With the development of technology, as an upgrade of the single roller brush, double roller brush cleaning equipment has also appeared more and more, and has been favored by many users.

[0003] In the process of implementing the utility model, the inventors found that there are at least the following problems in the prior art:

[0004] The vacuum cleaners and floor scrubbers in the prior art usually have a roller brush chamber facing the roller brush behind the roller brush, the roller brush chamber has a bottom plate, and a straight scraping strip or sealing strip parallel to the roller brush is provided at the lower edge of the bottom plate of the roller brush chamber. Dirt and sewage enter the roller brush chamber under the coordinated action of the roller brush, the scraping strip and the airflow, and are then sucked into the dirt collecting container through the airflow channel. However, the cross-sectional area of ​​the opening of the roller brush chamber is large, and the airflow is relatively dispersed, resulting in insufficient suction, which often causes dirt and sewage to fail to be sucked in, or to adhere to the inside of the roller brush chamber, and is difficult to remove by self-cleaning. Not only is it easy to miss dirt and sewage, but it is also easy to cause odor problems. The gap between the straight scraping strip at the lower edge of the bottom of the roller brush chamber and the roller brush is small, and slightly larger garbage will be stuck between the scraping strip and the roller brush and cannot be sucked in. When encountering obvious joints between floors or tiles, the straight scraping strip is often obstructed or even bounces, resulting in leakage of dirt and a poor user experience. Utility Model Content

[0005] In order to solve at least one of the above technical problems, the purpose of the present utility model is to provide a floor brush assembly, which is used to solve the problem that the suction force at the opening of the roller brush cavity of the floor brush in the prior art is dispersed, and dirt and sewage are easily attached and retained inside the roller brush cavity.

[0006] Another object of the present invention is to provide a cleaning device, comprising the above-mentioned floor brush assembly.

[0007] In order to achieve the above-mentioned purpose, according to one aspect of the utility model, a floor brush assembly is provided, comprising a shell, an air inlet cavity at the bottom of the shell, and a first roller brush installed at the front of the shell, the bottom of the shell has a V-shaped first air guide groove, the bottom of the first air guide groove is open and faces the cleaned surface, the wide end of the first air guide groove opens toward the first roller brush, and the narrow end is connected to the air inlet cavity;

[0008] A first V-shaped scraper strip is provided on the lower edge of the two side walls of the first air guide groove. The first scraper strip contacts the surface to be cleaned and is used to remove dirt from the surface to be cleaned and guide it to the narrow end of the first air guide groove, and the dirt is sucked into the air inlet cavity under the action of the airflow.

[0009] Furthermore, the first roller brush is controlled by a one-way clutch and can only rotate in a single direction;

[0010] When the housing moves forward, the one-way clutch controlling the first roller brush is in an overrunning state, and the first roller brush passively rotates by means of the friction force generated by the first roller brush and the surface to be cleaned;

[0011] When the housing moves backward, the one-way clutch controlling the first roller brush is in a reverse stop state, so that the first roller brush stops rotating, and its surface rubs and wipes the surface to be cleaned.

[0012] Further, according to an embodiment of one aspect of the utility model, a floor brush assembly is provided, further comprising a second rolling brush mounted on the rear of the housing, and a second V-shaped air guide groove located at the bottom of the housing, the air inlet cavity being located between the first air guide groove and the second air guide groove, the bottom of the second air guide groove being open and facing the cleaned surface, the wide end of the second air guide groove opening facing the second rolling brush, and the narrow end communicating with the air inlet cavity;

[0013] A second V-shaped scraper strip is provided on the lower edge of the two side walls of the second air guide groove. The second scraper strip contacts the surface to be cleaned and is used to remove dirt from the surface to be cleaned and guide it to the narrow end of the second air guide groove, where the dirt is sucked into the air inlet cavity under the action of the airflow.

[0014] 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;

[0015] A friction member is combined below the separator, and the friction member contacts the surface to be cleaned, and utilizes the friction force between the friction member and the surface to be cleaned to drive the separator to move;

[0016] 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;

[0017] 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.

[0018] Optionally, the first roller brush and the second roller brush are both controlled by a one-way clutch, so that both can only rotate in a single direction, and the rotation direction of the first roller brush is opposite to that of the second roller brush;

[0019] When the housing moves toward the first roller brush, the one-way clutch controlling the first roller brush is in an overrunning state, and the first roller brush is passively rotated by means of the friction force generated with the surface to be cleaned, and the one-way clutch controlling the second roller brush is in a non-returning state, so that the second roller brush stops rotating, and its surface rubs against and wipes the surface to be cleaned;

[0020] Similarly, when the shell moves toward the direction of 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 with the friction force generated with the surface to be cleaned. The one-way clutch controlling the first roller brush is in a check state, causing the first roller brush to stop rotating, and its surface rubs against and wipes the surface to be cleaned.

[0021] Optionally, 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;

[0022] An auxiliary roller is provided on the bottom surface of the housing, and the main weight of the housing is supported by the second roller brush and the auxiliary roller;

[0023] During the cleaning process, when the housing moves toward the first roller brush, the first roller brush rotates, lifts up dirt on the surface to be cleaned, and sucks it into the dirt collection container through the air inlet cavity. At this time, the one-way clutch keeps the second roller brush in reverse order, and the surface of the second roller brush rubs against and wipes the surface to be cleaned.

[0024] When the housing moves toward the second roller brush, the first roller brush continues to rotate. At this time, 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.

[0025] Optionally, the shell includes an upper shell cover and a dirt collecting box detachably connected to the upper shell cover, the air outlet of the air inlet chamber is located inside the dirt collecting box, the first roller brush and the second roller brush are detachably installed at the front and rear ends of the dirt collecting box respectively, and the first roller brush, the second roller brush and the dirt collecting box can be disassembled and assembled from the shell as a whole.

[0026] Furthermore, the floor brush assembly also includes a water supply assembly, which includes a water tank seat, a water tank, a water pipeline, and a water outlet;

[0027] The water tank seat is located above the shell and is connected to the shell through a universal joint. The water tank can be detachably mounted on the water tank seat;

[0028] A switchable air vent is provided at the upper end of the water tank. When the air vent is opened, the liquid in the water tank flows out under the action of gravity and is transported to the water outlet hole on the shell through the water pipeline to wet the roller brush surface and / or the surface to be cleaned. When the air vent is closed, negative pressure occurs in the water tank, causing the liquid in the water tank to stop flowing out. The water tank seat is also provided with a push rod installation interface for connecting the push rod of the cleaning tool.

[0029] Optionally, at least one of the first roller brush and the second roller brush is a crawler roller brush.

[0030] In addition, according to one aspect of the present invention, a cleaning tool is provided, comprising the floor brush assembly described in any one of the aforementioned embodiments.

[0031] Compared with the prior art, the embodiments according to one aspect of the present invention have at least the following advantages or beneficial effects:

[0032] Compared with conventional straight scraper bars, the V-shaped scraper bar not only has better dirt scraping and guiding effects, but also can help disperse and guide the cleaning liquid, ensuring that the cleaning liquid is more evenly distributed on the cleaned surface and improving the cleaning effect. At the same time, there is a larger gap between the V-shaped scraper bar and the roller brush, which allows larger solid waste to enter the air guide groove.

[0033] When cleaning floors or tile surfaces with joints, compared with conventional straight scrapers, the V-shaped scraper has an oblique angle to the joint, which has better passability and is less likely to be obstructed by the joints, causing the scraper to jump at the joints.

[0034] Since there is no bottom plate under the V-shaped air guide groove and it is an open structure, sewage and dirt will not stay in the air guide groove. Instead, with the coordinated action of the roller brush, the V-shaped air guide groove and the V-shaped scraper strip, the airflow and sewage and dirt are guided to the narrow end of the V-shaped air guide groove, and the maximum suction force is achieved near the air inlet cavity at the narrow end, which can achieve a better dirt suction effect. Since the air guide groove is an open structure, it will not hide dirt and is very easy to clean.

[0035] 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

[0036] Figure 1 is a bottom view of a floor brush assembly provided according to an embodiment of the utility model;

[0037] Figure 2 is a three-dimensional schematic diagram of a floor brush assembly provided according to another embodiment of the utility model;

[0038] Figure 3 yes Figure 2 A schematic diagram of a floor brush assembly provided from above;

[0039] Figure 4 It is a structural schematic diagram of a floor brush assembly provided according to an embodiment of the utility model;

[0040] Figure 5 yes Figure 4 A schematic structural diagram of a floor brush assembly from another perspective is provided;

[0041] Figure 6 It is a cross-sectional schematic diagram of the air inlet cavity and the partition when the floor brush assembly provided in one embodiment of the utility model moves in one direction;

[0042] Figure 7 yes Figure 6 A schematic cross-sectional view of the air inlet cavity and the partition when the middle floor brush assembly moves in another direction.

[0043] in, Figures 1 to 7 The corresponding relationship between the reference numerals and the component names is as follows:

[0044] 1 housing; 10 upper housing cover; 11 plug board; 12 ball plunger; 2 dirt collecting box; 20 side panel; 200 water squeezing roller; 201 slot; 202 bottom plate; 21 first roller brush; 210 connecting piece; 211 one-way bearing; 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 piece; 265 air outlet; 27 auxiliary roller; 28 water outlet; 3 water tank seat; 31 water tank; 32 push rod installation interface. DETAILED DESCRIPTION

[0045] 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.

[0046] 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.

[0047] 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.

[0048] In this utility model, unless otherwise clearly specified and limited, the terms such as "connected" and "connection" should 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 this utility model can be understood according to specific circumstances.

[0049] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0050] According to some embodiments of the present invention, the floor brush assembly is as follows: Figure 1 As shown, it includes a housing 1, an air inlet chamber 26 formed at the bottom of the housing 1, a first roller brush 21 installed at the front of the housing 1, a V-shaped first air guide groove 241 is formed at the bottom of the housing 1, the bottom of the first air guide groove 241 is an open structure and faces the cleaned surface, the wide end of the first roller brush 21 is opened, and the narrow end is connected to the air inlet chamber 26, and an auxiliary roller 27 for supporting the body together with the first roller brush 21 is provided at the rear of the housing 1;

[0051] A V-shaped first scraper 251 is provided on both side walls of the V-shaped first air guide groove 241, i.e., the lower edges of its two V arms. The first scraper 251 is made of a flexible wear-resistant material, such as silicone, rubber, etc. The lower edge of the first scraper 251 is in contact with the surface to be cleaned, and is used to remove dirt and sewage attached to the surface to be cleaned when the floor brush assembly moves forward, and guide and collect them near the narrow end of the first air guide groove 241. Since the air inlet area near the narrow end is small and the air flow velocity is fast, a greater suction force can be achieved, and it is easier to suck dirt and sewage into the air inlet chamber 26 and collect them in the dirt collecting container;

[0052] When the floor brush assembly moves backward, the residual dirt and sewage that are not sucked in temporarily remain on the cleaned surface, and are then collected by the roller brush 21 and confined near the wide end of the first air guide groove 241, and the above cleaning process is repeated again when the floor brush assembly moves forward next time;

[0053] During the forward and backward movement of the floor brush assembly, since the first air guide groove has no bottom plate and is an open structure facing downward, even if there is residual dirt and sewage, it will not remain inside the air guide groove, but will be confined to the cleaned surface between the wide end and the narrow end of the first air guide groove 241, and will be gathered again and sucked into the air inlet chamber 26 during the reciprocating cleaning process.

[0054] 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.

[0055] Furthermore, the first roller brush 21 is controlled by a one-way clutch and can only rotate in a single direction. The one-way clutch can be a one-way bearing or other mechanism with a one-way check function provided at the shaft end of the first roller brush 21;

[0056] When the housing 1 moves forward, the one-way bearing controlling the first roller brush 21 is in an overrunning state, and the first roller brush 21 rotates under the action of the friction between the roller brush surface and the surface to be cleaned, and rolls over the surface to be cleaned, and the garbage and sewage enter the first air guide groove 241 behind the first roller brush 21, and are guided and collected near the narrow end of the first air guide groove 241 under the coordinated action of the first scraper strip 251 and the airflow, and then sucked into the air inlet chamber 26;

[0057] On the contrary, when the housing 1 moves backward, the one-way bearing of the first roller brush 21 is controlled to be in a non-return state, so that the first roller brush 21 stops rotating, and its surface rubs and wipes the surface to be cleaned. Since the first roller brush 21 is in a stopped state at this time, there is sliding friction between it and the surface to be cleaned, and the first roller brush 21 and the auxiliary roller 27 located at the rear of the housing jointly support the weight of the body. Compared with the electric roller brush that only the surface bristles touch the ground, the roller brush surface has a greater downward pressure on the surface to be cleaned, and has a better cleaning effect on stubborn stains and wet hair, etc. At the same time, since the first roller brush is passively rotated and does not need to be driven by a motor, the cleaning tool can have a longer battery life.

[0058] It can be understood that in other embodiments, the first roller brush 21 may also be an electric roller brush to adapt to cleaning scenarios suitable for electric roller brushes.

[0059] According to some embodiments of the present invention, the floor brush assembly is as follows: Figures 2 to 4 As shown, it includes 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;

[0060] 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;

[0061] 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.

[0062] 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.

[0063] When the floor brush assembly is performing cleaning operations, when the shell 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 cavity under the flushing of the airflow and the pushing and scraping of the V-shaped scraping strips. Moreover, since the airflow velocity near the air inlet cavity is faster and the suction force is more concentrated, the gathered garbage and sewage can be easily sucked into the sewage suction channel;

[0064] 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.

[0065] Further, according to some embodiments of the present invention, Figure 5 As shown, the first roller brush 21 and the second roller brush 22 are controlled by a one-way clutch and can only rotate in one direction, wherein the one-way clutch can be a one-way bearing or a one-way mechanism such as a ratchet provided at the shaft ends of the first roller brush 21 and the second roller brush 22. In this embodiment, the one-way clutch is preferably a one-way bearing 211 provided at the shaft end of the first roller brush 21 and a one-way bearing 221 provided at the shaft end of the second roller brush 22;

[0066] The one-way bearings at the shaft ends of the first roller brush 21 and the second roller brush 22 have opposite check directions, so that both can only rotate in a single direction, and the rotation directions are opposite. The first roller brush 21 and the second roller brush 22 are passively rotated by the friction between their surfaces and the surface to be cleaned;

[0067] When the housing moves toward the first roller brush 21, the one-way bearing 211 at the shaft end of the first roller brush 21 is in an overrunning state, the first roller brush 21 rotates, and the one-way bearing 221 at the shaft end of the second roller brush 22 is in a non-returning state, so that the second roller brush 22 stops rotating. At this time, the surface of the second roller brush 22 rubs against and wipes the surface to be cleaned.

[0068] Similarly, when the shell moves toward the second roller brush 22, the one-way bearing 221 located at the axial end of the first roller brush 21 is in an overtaking state, the first roller brush 22 rotates, and the one-way bearing 211 located at the axial end of the second roller brush 22 is in a check state, causing the first roller brush 21 to stop rotating. At this time, the surface of the first roller brush 21 rubs against and wipes the surface to be cleaned.

[0069] Since the two roller brushes passively rotate through the friction between their surfaces and the surface to be cleaned, the roller brushes do not consume electricity, and under the control of the one-way clutch, the two roller brushes rotate and stop alternately, and the roller brush surfaces directly slide and rub against the surface to be cleaned, similar to wiping the floor with a manual rag. It has a better cleaning effect on stubborn stains and wet hair adhered to the surface to be cleaned, and can also collect and confine garbage between the two roller brushes to prevent missing sewage and garbage, and can also be used as a manual mop when the vacuum cleaner host is not turned on.

[0070] Further, according to some embodiments of the present invention, Figure 4 , Figure 5 As shown, the shell 1 includes an upper shell cover 10, and plug plates 11 are provided on both sides of the upper shell cover 10. The shell 1 also includes a dirt collecting box 2, and the interior of the dirt collecting box 2 is provided with an air outlet 265 of the air inlet chamber, and side panels 20 are provided on both sides of the dirt collecting box 2. A slot 201 is provided between the side panel 20 and the box body, and the plug plate 11 is inserted into the slot 201. 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, so that the upper shell cover 10 and the dirt collecting box 2 can be separated; during installation, 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 201 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 the dirt collecting box can be easily and quickly disassembled and assembled.

[0071] 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.

[0072] Optionally, the upper shell cover 10 and the dirt collecting box 2 may also be connected by snap fastening.

[0073] 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.

[0074] Further, according to some embodiments of the present invention, Figures 2 to 5 As shown, the air guide grooves 241 and 242 are formed on the bottom surface of the dirt collecting box 2, and the side panels 20 on both sides of the dirt collecting box 2 extend forward and backward, and the first roller brush 21 and the second roller brush 22 are clamped and installed at the front and rear ends of the dirt collecting box 2 respectively.

[0075] Since the air guide groove, the first roller brush and the second roller brush are all arranged on the dirt collecting box, they can be disassembled and assembled together with the dirt collecting box as a whole and rinsed together, avoiding the problems of difficult disassembly and assembly of the roller brush of the traditional floor scrubber, incomplete self-cleaning, easy odor of the roller brush, and easy dirt and grime accumulation in the roller brush cavity where the roller brush is installed.

[0076] Optionally, the inner positions of the side plate 20 and the first roller brush 21 and the second roller brush 22 are provided with a slide groove from bottom to top, and the first roller brush 21 and the second roller brush 22 are provided with a connector 210 that can be embedded in the slide groove at both ends, and the connector 210 is provided with a ball plunger, and the side plate 20 is provided with a ball socket that cooperates with the ball plunger. The first roller brush 21 and the second roller brush 22 are detachably installed between the two side plates 20 through the connector 210; when installing the roller brush, align the connectors 210 at both ends of the roller brush with the slide groove position of the side plate 20 from below, and gently press down the dirt collection box 2 to connect the roller brush to the dirt collection box. When removing the roller brush, just press down the upper part of the roller brush gently to remove the roller brush. This roller brush installation method has the characteristics of simple structure and convenient disassembly and assembly.

[0077] Further, according to some embodiments of the present invention, Figures 3 to 5 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.

[0078] The water tank seat 3 is located above the housing 1 and is connected to the housing 1 via a universal joint;

[0079] 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.

[0080] The water tank seat is also provided with a push rod installation interface 32 for connecting the push rod of the cleaning tool.

[0081] 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;

[0082] 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.

[0083] According to some embodiments of the present invention, Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 As shown, a floor brush assembly is provided, comprising a housing 1, and a first roller brush 21 and a second roller brush 22 mounted on the housing, and an air inlet cavity 26 is formed between the first roller brush and the second roller brush;

[0084] 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 also narrow at the top and wide at the bottom. The partition has a front bevel 2631 and a rear bevel 2632.

[0085] 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;

[0086] During the cleaning operation, when the housing 1 moves forward, Figure 6 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;

[0087] On the contrary, when the housing 1 moves backward, Figure 7 As 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.

[0088] 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;

[0089] 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.

[0090] 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.

[0091] Further, according to some embodiments of one aspect of the present invention, 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 first roller brush 21 and the second roller brush 22 rotate in opposite directions;

[0092] like Figure 3 As shown, an auxiliary roller 27 is provided on the bottom surface of the housing 1, the cylinder of the first roller brush 21 is suspended, and only the surface bristles contact the cleaned surface. The center of gravity of the housing 1 falls between the second roller brush 22 and the auxiliary roller 27, and the second roller brush 22 and the auxiliary roller 27 support the main weight of the housing;

[0093] During the cleaning process, when the housing 1 moves toward the first roller brush 21, the first roller brush 21 rotates, lifts up dirt on the surface to be cleaned, and sucks it into the dirt collection container through the air inlet chamber 26. At this time, the one-way clutch keeps the second roller brush 22 in reverse order, and the surface of the second roller brush 22 rubs against and wipes the surface to be cleaned.

[0094] When the housing 1 moves toward the second roller brush 22, the first roller brush 21 continues to rotate. At this time, the one-way clutch controlling the second roller brush 22 is in an overrunning state, and the second roller brush 22 passively rotates by the friction between its surface and the surface to be cleaned.

[0095] Specifically, the one-way clutch is preferably a one-way bearing arranged at the shaft end of the second roller brush 22, which has the advantages of small size, low noise, reliable control, and direct selection of standard parts. Of course, other mechanisms with one-way control functions such as ratchets can also be selected.

[0096] Since the first roller brush 21 is a high-speed rotating electric roller brush, it can roll up dirt and sewage, and has a better sewage suction effect under the same suction strength and air intake structure. At the same time, in order to avoid the high-speed rotating roller brush driving the fuselage to affect the control, the electric roller brush is usually installed with a certain gap from the surface to be cleaned, and the surface bristles touch the ground to clean the surface to be cleaned. When the floor brush moves along the cleaning path, due to the gap between the first roller brush cylinder and the surface to be cleaned, the rotating roller brush surface bristles will roll up the sewage on the surface to be cleaned, and will not push the sewage forward like the second roller brush that is close to the surface to be cleaned; the electrically driven first roller brush can also be provided with a roller brush squeezing and cleaning component that exerts a greater pressure on the roller brush surface, and will not be easily jammed by the resistance of the squeezing component like the passively rotating second roller brush, so it has a better squeezing effect and has a better cleaning effect for scenes with more sewage;

[0097] Since the second roller brush is controlled by the one-way clutch, it is in a non-returning state when moving in the direction of the first roller brush, and since the second roller brush and the auxiliary roller support the main weight of the housing, the surface of the stopped roller brush is in close contact with and wipes the surface to be cleaned, which has a pressurizing effect on the surface to be cleaned, which is equivalent to wiping the floor with a rag, and has a better cleaning effect on stubborn stains and wet hair, and the rotation of the first roller brush will generate a forward assist force, which can overcome the friction resistance between the second roller brush and the surface to be cleaned, making the forward movement of the floor brush assembly more labor-saving; when moving in the direction of the second roller brush, the second roller brush is in an overtaking state, and the rolling second roller brush has a smaller friction resistance;

[0098] In addition, because the second roller brush has a better cleaning effect on stubborn stains and residual sewage that need to be wiped off with pressure, the first roller brush only needs to take on the task of removing dirt and sewage that are not firmly attached to the cleaned surface, the installation height of the first roller brush can be appropriately increased, and the contact pressure between the roller brush bristles and the cleaned surface 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;

[0099] Therefore, 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 floor brush assembly.

[0100] Furthermore, if Figure 5 As shown, a rotatable squeezing roller 200 is provided behind the first roller brush 21. The squeezing roller 200 contacts and squeezes the surface of the first roller brush 21. When the first roller brush 21 rotates, the squeezing roller 200 is driven to rotate, and at the same time, the squeezing roller 200 squeezes out the water in the bristles of the first roller brush 21.

[0101] Compared with the wiper blade in the prior art, the circular 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 of the electric roller brush when it rotates, or when the roller brush is a passively rotating roller brush, it can prevent the friction between the roller brush and the water squeezing part from being greater than the friction with the surface to be cleaned, causing the roller brush to get stuck and stop rotating. At the same time, it can also reduce the wear of the roller brush and extend the service life of the roller brush.

[0102] Furthermore, according to some embodiments of the present invention, electrically driven running wheels are also included.

[0103] The electrically driven travel wheel can replace Figure 1 , Figure 3 The auxiliary roller 27 in the structure supports the housing and provides assistance at the same time, or when the floor brush assembly is used as a component of the cleaning robot, the cleaning robot is enabled to walk, retreat, and turn by rotating the walking wheels.

[0104] Further, according to some embodiments of the present invention, at least one of the first roller brush and the second roller brush is a crawler-type roller brush.

[0105] Compared with cylindrical roller brushes, crawler roller brushes have a larger contact area with the surface being cleaned, are less likely to get entangled with hair, and are less likely to miss dirt.

[0106] According to an embodiment of one aspect of the utility model, a cleaning device is provided, comprising any one of the floor brush assemblies described above.

[0107] The cleaning device may be any surface cleaning device using the floor brush assembly provided by the utility model, including but not limited to a vacuum cleaner, a floor scrubber, a glass cleaning machine, a cleaning robot, etc.;

[0108] Compared with the prior art, the cleaning device using the 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.

[0109] 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 floor brush assembly, characterized in that: The cleaning device comprises a housing, an air inlet cavity at the bottom of the housing, and a first roller brush installed at the front of the housing, wherein the bottom of the housing has a V-shaped first air guide groove, the bottom of the first air guide groove is open and faces the surface to be cleaned, the wide end of the first air guide groove opens toward the first roller brush, and the narrow end is connected to the air inlet cavity; A first V-shaped scraper strip is provided on the lower edge of the two side walls of the first air guide groove. The first scraper strip contacts the surface to be cleaned and is used to remove dirt from the surface to be cleaned and guide it to the narrow end of the first air guide groove, and the dirt is sucked into the air inlet cavity under the action of the airflow.

2. The floor brush assembly according to claim 1, characterized in that: The first roller brush is controlled by a one-way clutch and can only rotate in one direction; When the housing moves forward, the one-way clutch controlling the first roller brush is in an overrunning state, and the first roller brush passively rotates by means of the friction force generated by the first roller brush and the surface to be cleaned; When the housing moves backward, the one-way clutch controlling the first roller brush is in a reverse stop state, so that the first roller brush stops rotating, and its surface rubs and wipes the surface to be cleaned.

3. The floor brush assembly according to claim 1, characterized in that: It also includes a second rolling brush installed at the rear of the shell, and a second V-shaped air guide groove at the bottom of the shell, the air inlet cavity is located between the first air guide groove and the second air guide groove, the bottom of the second air guide groove is open and faces the cleaned surface, the wide end of the second air guide groove opens toward the second rolling brush, and the narrow end is connected to the air inlet cavity; A second V-shaped scraper strip is provided on the lower edge of the two side walls of the second air guide groove. The second scraper strip contacts the surface to be cleaned and is used to remove dirt from the surface to be cleaned and guide it to the narrow end of the second air guide groove, where the dirt is sucked into the air inlet cavity under the action of the airflow.

4. The floor brush assembly according to claim 3, 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.

5. The floor brush assembly according to claim 3, characterized in that: The first roller brush and the second roller brush are both controlled by a one-way clutch, so that both can only rotate in a single direction, and the rotation direction of the first roller brush is opposite to that of the second roller brush; When the housing moves toward the first roller brush, the one-way clutch controlling the first roller brush is in an overrunning state, and the first roller brush is passively rotated by means of the friction force generated with the surface to be cleaned, and the one-way clutch controlling the second roller brush is in a non-returning state, so that the second roller brush stops rotating, and its surface rubs against and wipes the surface to be cleaned; Similarly, when the shell moves toward the direction of 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 with the friction force generated with the surface to be cleaned. The one-way clutch controlling the first roller brush is in a check state, causing the first roller brush to stop rotating, and its surface rubs against and wipes the surface to be cleaned.

6. The floor brush assembly according to claim 3, characterized in that: 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; An auxiliary roller is provided on the bottom surface of the housing, and the second roller brush and the auxiliary roller support the main weight of the housing; During the cleaning process, when the housing moves toward the first roller brush, the first roller brush rotates, lifts up dirt on the surface to be cleaned, and sucks it into the dirt collection container through the air inlet cavity. At this time, the one-way clutch keeps the second roller brush in reverse order, 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 first roller brush continues to rotate. At this time, 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.

7. The floor brush assembly according to claim 3, characterized in that: The shell includes an upper shell cover and a dirt collecting box detachably connected to the upper shell cover. The air outlet of the air inlet chamber is located inside the dirt collecting box. The first roller brush and the second roller brush are detachably installed at the front and rear ends of the dirt collecting box respectively. The first roller brush, the second roller brush and the dirt collecting box can be disassembled and assembled from the shell as a whole.

8. The floor brush assembly according to claim 1, characterized in that: At least one of the first roller brush and the second roller brush is a crawler-type roller brush.

9. The floor brush assembly according to claim 1, characterized in that: It also includes a water supply assembly, which includes a water tank seat, a water tank, a water pipeline, and a water outlet; The water tank seat is located above the shell and is connected to the shell through a universal joint. The water tank can be detachably mounted on the water tank seat; A switchable air vent is provided at the upper end of the water tank. When the air vent is opened, the liquid in the water tank flows out under the action of gravity and is transported to the water outlet hole on the shell through the water pipeline to wet the roller brush surface and / or the surface to be cleaned. When the air vent is closed, negative pressure occurs in the water tank, causing the liquid in the water tank to stop flowing out. The water tank seat is also provided with a push rod installation interface for connecting the push rod of the cleaning tool.

10. A cleaning device, characterized in that: The invention comprises the floor brush assembly according to any one of claims 1 to 9.

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