Surface cleaning device capable of being cleaned in flat-lying mode

Abstract

The utility model belongs to the technical field of cleaning, and particularly provides a surface cleaning device capable of cleaning in a flat-lying mode, which comprises a water supply system, a dirt suction system, a floor brush and a machine body hinged with the floor brush, the floor brush comprises a shell and a roller brush assembly installed at the front end of the shell, a water tank is arranged in the shell, and the water tank comprises a tank body and a water tank cover covering the upper end of the tank body. The shell comprises a top shell and a bottom shell with the upper end open, a partition plate which divides the space in the shell into a first cavity and a second cavity in the front-back direction of the floor brush is arranged at the shell, the first cavity is located in the front of the second cavity, the top shell covers the upper end opening of the second cavity, the upper end of the first cavity is open, the water tank is installed in the first cavity, and the rear end of the water tank cover is connected with the top shell and flush with the top shell. The water tank cover and the top shell form the upper surface of the floor brush, and the water tank part structure forwards crosses the front side wall of the first cavity and extends to the position above the roller brush assembly.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning appliances, and specifically provides a surface cleaning device capable of lying flat for cleaning. Background Art

[0002] Surface cleaning devices on the market are generally equipped with a sewage bucket and a clean water tank on the body, resulting in a thicker body front and back. The water pump and drive motor are set inside the floor brush, and the body can only be tilted at a certain angle relative to the floor brush and cannot lie flat. Generally, the space between furniture and the ground is mostly about 10 cm, while the thickness of the floor brush is generally about 7 cm and much thinner than the body. Therefore, although the floor brush can enter low spaces, due to the limited length and width of the floor brush, it can only clean relatively close areas such as the bedside and sofa. The body cannot enter low spaces, resulting in the inability to clean deeper and farther areas of low spaces.

[0003] A related technical solution provides a lying flat cleaning device. In order to reduce the thickness of the body, the body and the floor brush can simultaneously enter a relatively low space after lying flat, so as to clean the deeper and farther positions in the low space: the surface cleaning device transfers the installation position of the clean water tank from the body to the floor brush to reduce the depth of the body.

[0004] However, the above technical solution brings new technical problems: in order to meet the floor cleaning needs of ordinary households, the water storage capacity of the clean water tank must be sufficient, and the volume of the clean water tank itself cannot be made very small, otherwise it will affect the capacity of the clean water tank. After the clean water tank is set in the floor brush, it is easy to make the floor brush thicker and / or wider. The thicker the floor brush is, the more difficult it is to enter some low spaces, and the wider the floor brush is, the heavier it is, and the more inconvenient it is to turn and operate. That is, after the surface cleaning device that can lie flat for cleaning transfers the clean water tank to the floor brush, it is easy to have problems with insufficient clean water tank capacity and / or the clean water tank causing the floor brush to be too thick and / or too wide. Utility Model Content

[0005] The utility model aims to provide a surface cleaning device capable of lying flat for cleaning, which can improve the space utilization rate in the floor brush when a clean water tank is installed on the floor brush, so as to ensure the capacity of the clean water tank and prevent the floor brush from becoming too thick and / or wide.

[0006] In order to achieve the above-mentioned purpose, one or more embodiments of the utility model provide a surface cleaning device that can be laid flat for cleaning, including a water supply system, a dirt suction system, a floor brush and a body hinged to the floor brush, the floor brush including a shell and a roller brush assembly installed at the front end of the shell, a water tank is arranged in the shell, and the water tank includes a box body and a water tank cover covering the upper end of the box body. The shell includes a top shell and a bottom shell with an open upper end, and a partition is arranged at the shell to separate the space in the shell into a first cavity and a second cavity along the front-back direction of the floor brush, the first cavity is located in front of the second cavity, the top shell covers the upper port of the second cavity, the upper end of the first cavity is open, the water tank is installed in the first cavity, the rear end of the water tank cover is connected to the top shell and the connection is flush, the water tank cover and the top shell form the upper surface of the floor brush, and the water tank part of the structure goes forward over the front side wall of the first cavity and extends to above the roller brush assembly.

[0007] In at least one embodiment, the upper ends of the left and right side walls of the shell gradually decrease from the back to the front; the minimum height of the upper ends of the left and right side walls of the shell is at least twice the height of the upper end of the front wall of the first cavity.

[0008] In at least one embodiment, an inner lining layer is provided in the first cavity, and a gap is formed between the inner lining layer and the left and right side walls and the bottom wall of the first cavity.

[0009] In at least one embodiment, the front portion of the top shell is recessed into the first cavity to form an inner lining layer, the rear side wall of the recessed portion of the top shell is a partition, and the left and right side walls and the bottom wall of the recessed portion of the top shell are the inner lining layer.

[0010] In at least one embodiment, the inner wall of the lining layer is consistent in shape with the outer wall of the water tank, and there is a gap between the outer wall of the water tank and the lining layer, and supporting ribs are provided in the gap.

[0011] In at least one embodiment, a locking piece is provided at the lower portion of the water tank, a lock buckle cooperating with the locking piece is provided in the gap, and the buckling end of the lock buckle extends out of the guide hole on the inner lining layer and cooperates with the locking piece of the water tank to lock the water tank in the first cavity.

[0012] In at least one embodiment, a limiting piece is provided at the front end of the side walls on the left and right sides of the lining layer, and a limiting structure cooperating with the limiting piece is provided on the side walls on the left and right sides of the water tank.

[0013] In at least one embodiment, a water inlet is provided on the side of the water tank, a water outlet valve is provided at the lowest point of the bottom of the water tank, an adapter is provided on the bottom wall of the bottom shell to connect with the water outlet valve, and the other end of the adapter is connected to the flow channel on the water distribution plate.

[0014] In at least one embodiment, a through hole is provided on the inner lining layer, and the water outlet valve is arranged to protrude from the bottom wall of the water tank, and the water outlet valve passes downward through the through hole and docks with the adapter.

[0015] In at least one embodiment, the bottom wall of the second chamber is provided with an opening, at the opening is provided with an electrical connector for charging the surface cleaning device, the electrical connector is arranged close to the partition, and a vertical electrolytic water module is also provided in the second chamber, the electrolytic water module is arranged close to the partition.

[0016] Beneficial effects of one or more of the above technical solutions:

[0017] (1) In this solution, a partition is provided at the shell body to divide the space inside the shell body into a first cavity and a second cavity along the front-to-back direction of the floor brush. The upper end of the first cavity is open, and the water tank is installed in the first cavity. The water tank cover and the top shell form the upper surface of the floor brush. Part of the structure of the water tank passes forward over the first cavity and extends to the top of the roller brush assembly. In this arrangement, the water tank cover participates in forming the upper surface of the floor brush, and part of the structure of the top shell can be omitted, thereby reserving more vertical installation space at the floor brush for the installation of the water tank, so as to reduce the impact of the installation of the water tank on the thickness of the floor brush. At the same time, part of the structure of the water tank (the water tank cover and / or part of the front side wall of the water tank) is located above the roller brush assembly to shield the roller brush assembly, so that the structural setting of the original roller brush cover assembly can be omitted, and the omission of the roller brush cover assembly can reserve more vertical and front-to-back installation space for the installation of the water tank.

[0018] That is, the present solution can omit part of the structure of the existing top shell and the roller brush cover assembly to increase the space for installing the water tank at the floor brush housing, thereby reducing the probability that the floor brush becomes thicker and wider left and right due to the installation of the water tank, thereby becoming bulky and difficult to adapt to a lower space; and the present solution facilitates reducing the thickness and other dimensions of the floor brush when the water tank is installed, so that the floor brush can adapt to the cleaning of a lower space and improves the convenience of controlling the floor brush.

[0019] In addition, when the water tank replaces the original roller brush assembly to cover the roller brush, the dirt generated by the scraper when scraping the roller brush will be thrown onto the outer wall surface of the front end of the water tank; and the user can clean the dirt on the outer wall of the water tank while disassembling and assembling the water tank and adding water; compared with the existing technology, there is no need to clean the roller brush cover separately, thereby reducing the user's cleaning burden and improving the user's experience.

[0020] Secondly, the partition divides the space in the shell into a first cavity and a second cavity, so that the first cavity is used to install the water tank, and the second cavity is used to install electrical components other than the water tank; when the electrical components and other structures are installed in the second cavity, the space they occupy in the floor brush can be reduced, so that the floor brush can reserve more space for the installation of the water tank, thereby ensuring the capacity of the water tank and avoiding an increase in the thickness of the floor brush and other dimensions, thereby realizing a miniaturized design of the floor brush.

[0021] Finally, the rear end of the water tank cover is connected to the top shell and forms the upper surface of the floor brush with the top shell, and the connection between the two is flush. At this time, there is only one connection on the upper surface of the floor brush, which reduces the connection seams and corners on the upper surface of the floor brush, reduces the probability of dirt accumulation on the upper surface of the floor brush, and reduces the area that customers need to clean.

[0022] (2) In this solution, the upper ends of the left and right side walls of the shell gradually decrease from the back to the front, and the minimum height of the upper ends of the left and right side walls of the shell is at least twice the height of the upper end of the front wall of the first cavity. This arrangement allows the water tank to extend further above the roller brush assembly, thereby moving the center of gravity of the water tank and the floor brush forward to balance the weight of the front and back of the floor brush; this can avoid the problem of the front end of the floor brush tilting due to its light weight, ensure the contact force between the roller brush of the roller brush assembly and the ground, and thus ensure the scrubbing and cleaning effect of the floor brush;

[0023] In addition, this arrangement leaves enough space for further increasing the capacity of the water tank, ensuring sufficient water output from the water tank, while also ensuring that there is sufficient height on the first cavity wall to set up the sewage suction port, ensuring that all sewage can enter the sewage suction channel and the sewage bucket through the sewage suction port, and even larger particles will not clog it, thereby ensuring the sewage suction effect.

[0024] Finally, this setting makes the upper surface of the floor brush a plane that is low in the front and high in the back, so as to lower the center of gravity of the floor brush and the size of the windward surface when moving forward, thereby reducing the air resistance of the floor brush when moving forward and providing better control performance for customers.

[0025] (3) In this solution, the first cavity has an inner lining layer, and the inner lining layer has gaps with the left and right side walls and the bottom wall of the first cavity. This arrangement method arranges the inner lining layer in the first cavity, which facilitates the use of the inner lining layer to adjust the inner cavity shape of the first cavity, thereby enabling the first cavity to adapt to the shape of the water tank through the arrangement of the inner lining layer. In addition, this arrangement method uses the gap to provide a space for setting the connecting pipes between the water tank and accessories such as the water pump, and will not be clamped and blocked, thereby ensuring water supply; at the same time, it also avoids hard contact when the inner lining layer of the first cavity is tightly fitted with the bottom shell, avoiding vibration and generating loud noise.

[0026] (4) The front part of the top shell is recessed into the first cavity to form the inner lining layer, the rear side wall of the recessed part of the top shell is the partition, and the left and right side walls and the bottom wall of the recessed part of the top shell are the inner lining layer. The first cavity in this arrangement is a double-layer structure formed by the top shell and the bottom shell, which can increase the load-bearing capacity of the first cavity and the structural strength of the entire shell.

[0027] (5) In this solution, the inner wall of the lining layer is consistent with the outer wall of the water tank, and support ribs are provided at the gap between the outer wall of the water tank and the lining layer. This arrangement prevents the lining layer and the outer wall of the water tank from having hard contact due to close fit, and the reserved gap facilitates the disassembly and assembly of the water tank, thereby avoiding wear of the water tank and the lining layer. In addition, the support ribs in this solution can limit the position between the water tank and the lining layer, thereby avoiding noise caused by the reciprocating shaking of the water tank relative to the lining layer in the first cavity.

[0028] (6) In this solution, a locking piece is provided at the bottom of the water tank, and a lock buckle is provided in the gap to cooperate with the locking piece. The buckling end of the lock buckle extends out of the guide hole on the inner lining layer to cooperate with the locking piece of the water tank, and the lock buckle locks the water tank in the first cavity. This arrangement uses the lock buckle extending out of the inner lining layer to cooperate with the lock buckle at the bottom of the water tank to achieve locking, which can prevent the floor brush from moving forward, backward, left, right, and left, and the roller brush assembly from rotating to cause vibrations that affect the water tank, so that the water tank is stably installed in the first cavity, reducing the probability of vibration of the water tank in the first cavity and reducing the noise when the floor brush moves.

[0029] (7) In this solution, limiting members are provided at the front end of the side walls on both sides of the inner lining layer, and the limiting members cooperate with the limiting structure of the side walls of the water tank. This arrangement makes it easy to use the limiting members and the limiting structure to limit the front of the water tank, thereby reducing the impact of the rotation of the roller brush assembly at the front end of the floor brush on the water tank and avoiding the problem of vibration of the water tank and warping of the front end.

[0030] (8) In this solution, a water inlet is provided on the side of the water tank, a water outlet valve is provided at the bottom of the water tank, and a adapter is provided on the bottom wall of the bottom shell to connect with the water outlet valve, and the other end of the adapter is connected with the flow channel on the water distribution plate. This arrangement allows the water inlet and the water outlet valve of the water tank to be contained in the first cavity without being exposed to the outside of the floor brush shell, which is convenient for protecting the water inlet and the water outlet valve; in addition, the water outlet valve can be connected with the flow channel on the water distribution plate through the adapter, which is convenient for directly supplying water to the water distribution plate, without the need for additional water supply pipelines, saving internal space of the floor brush, and facilitating the increase of the installation space of the water tank, thereby facilitating the reduction of the height of the floor brush and realizing a miniaturized design of the floor brush.

[0031] (9) In this solution, the inner lining is provided with a through hole, and the water outlet valve is arranged protruding from the bottom wall of the water tank and passes downward through the through hole to connect with the adapter. This arrangement makes it easy for the clean water in the water tank to pass through the inner lining and connect with the adapter, avoiding the existence of the inner lining affecting the water supply from the water tank to the water distribution plate.

[0032] (10) In this solution, the bottom wall of the second cavity is provided with an opening, and an electrical connector is provided at the opening, and the electrical connector is arranged close to the partition. The second cavity is also provided with a vertical electrolytic water module, and the electrolytic water module is arranged close to the partition. This arrangement is convenient for reducing the space occupied by the electrical connector and the electrolytic water module in the second cavity, and then for reducing the space required for the second cavity, so that the floor brush can leave more space for the first cavity, and is conducive to reducing the thickness and other dimensions of the floor brush, so as to realize the miniaturized design of the floor brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0034] Figure 1 It is a three-dimensional schematic diagram of the overall structure in the embodiment of the utility model;

[0035] Figure 2 It is an axonometric schematic diagram of a floor brush in an embodiment of the utility model;

[0036] Figure 3 This is a front view of a floor brush in an embodiment of the utility model;

[0037] Figure 4 yes Figure 3 Cross-sectional view after removing the first cavity and the second cavity part of the structure from the middle AA direction

[0038] Figure 5 It is a schematic diagram of the water tank removed from the first chamber in the embodiment of the utility model;

[0039] Figure 6 yes Figure 5 A schematic diagram of the structure of part A in the middle;

[0040] Figure 7 It is a side view of the water tank in the embodiment of the utility model;

[0041] Figure 8 It is a schematic diagram of the structure in which the top shell is removed from the bottom shell in the embodiment of the utility model;

[0042] Fig. 9 Schematic diagram of a water electrolysis module in an embodiment of the utility model;

[0043] Fig.10 It is a schematic diagram of a roller brush assembly installed at the front of a floor brush in an embodiment of the utility model;

[0044] Fig.11 It is a schematic diagram of the top shell being removed from the bottom shell in Embodiment 2 of the present utility model;

[0045] Figure numerals: 1. body; 2. floor brush; 3. roller brush assembly; 31. roller; 4. water tank; 401. box body; 402. water tank cover; 403. locking groove; 404. limiting hole; 407. water outlet valve; 5. first chamber; 6. second chamber; 7. partition; shell; 211. bottom shell; 212. top shell; 2121. lining layer; 2123. through hole; 214. gap; 215. supporting rib; 216. adapter; 22. lock; 23. limiting column; 24. electrical connector; 25. electrolytic water module; 251. water inlet; 252. water outlet; 26. water pump. DETAILED DESCRIPTION

[0046] Those skilled in the art should understand that the embodiments described below are merely preferred embodiments of the present application, which are merely used to explain the technical principles of the present application and are not used to limit the protection scope of the present application.

[0047] It should be noted that in the description of this application, the terms "center", "upper", "lower", "top", "bottom", "vertical", "horizontal", "inner", "outer" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it cannot be understood as a limitation on this application. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0048] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediate medium, or the internal connection of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0049] Example 1

[0050] like Figure 1-Figure 10As shown, this embodiment provides a surface cleaning device capable of lying flat for cleaning, comprising a water supply system, a dirt suction system, a floor brush 2 and a body 1 hinged to the floor brush 2, the floor brush 2 comprising a housing 21 and a roller brush assembly 3 mounted at the front end of the housing 21, a water tank 4 is arranged in the housing 21, and the water tank 4 comprises a box body 401 and a water tank cover 402 covering the upper end of the box body 401. The housing 21 comprises a top housing 212 and a bottom housing 211 with an upper end opening, a partition 7 is arranged at the housing 21 to separate the space in the housing 21 into a first cavity 5 and a second cavity 6 along the front-back direction of the floor brush 2, the top housing 212 covers the upper end of the second cavity 6, the upper end of the first cavity 5 is open, the water tank 4 is mounted in the first cavity 5, the rear end of the water tank cover 402 is connected to the top housing 212 and the connection is flush, the water tank cover 402 and the top housing 212 form the upper surface of the floor brush 2, and a partial structure of the water tank 4 passes forward over the front side wall of the first cavity 5 and extends to the top of the roller brush assembly 3.

[0051] Specifically, the lower end of the fuselage 1 is pivotally connected to the rear of the floor brush 2, a sewage bucket is installed on the front or rear side of the fuselage 1, and a handlebar and a handle are installed on the upper end of the fuselage 1. The water supply system includes the above-mentioned water tank 4, a water supply pipeline connected to the water tank 4, and a water pump 26 and other components. The water tank 4 is connected to the water distribution plate through the water supply pipeline. The water pump 26 is arranged in series in the water supply pipeline and gradually transports the clean water in the water tank 4 to the water distribution plate. The roller brush assembly 3 includes a roller. A roller brush cavity is provided on the front side of the floor brush 2. The roller brush assembly is rotatably installed in the roller brush cavity, and the rotation axis direction of the roller is parallel to the left and right direction of the floor brush 2. The roller brush assembly 3 also includes a rotating power part that drives the roller brush assembly to rotate. The rotating power part is generally a reduction motor or a stepping motor; in some other embodiments, the rotating power part can be a cylinder or the like if the use requirements are met.

[0052] In this embodiment, the water tank 4 is arranged in the housing 21 of the floor brush 2. More specifically, as mentioned above, the water tank 4 is arranged in the first cavity 5 separated in the housing 21 of the floor brush 2. The upper end of the first cavity 5 is open, which is convenient for disassembling the water tank 4 up and down in the first cavity 5. Specifically, the water tank cover 402 and the box body 401 can be formed in an integral injection molding form. In this case, the connection and sealing structure between the water tank cover 402 and the water tank 4 can be omitted, which is convenient for increasing the capacity of the water tank 4 while keeping the outer contour size of the water tank 4 unchanged. In some other structural forms, the box body 401 can be opened at the upper end, and the lower surface of the water tank cover 402 has a sealing flange, which is plugged downward to the upper end of the box body 401, and the plug-in position of the two is sealed by a sealing ring or a sealing glue liquid.

[0053] See also Figure 2-Figure 3, the upper surface of the water tank cover 402 and the upper surface of the top shell 212 together form the upper surface of the floor brush 2, that is, the water tank cover 402 is directly exposed to the external environment. Compared with the arrangement of an additional top shell 212 covering the water tank cover 402, the use of the top shell 212 is omitted at the position of the water tank cover 402 in this embodiment; it is equivalent to the top shell 212 having a gap at the position of the water tank cover 402, and the water tank cover 402 fills the gap. This arrangement can increase the vertical installation space of the water tank 4, thereby facilitating the provision of more installation space for the water tank 4 in the floor brush 2, and reducing the impact of the installation of the water tank 4 on the thickness and other dimensions of the floor brush 2.

[0054] Furthermore, in this embodiment, the notch on the upper portion of the top shell 212 penetrates the top shell 212 in the vertical direction and also penetrates the front end of the top shell 212 in the forward direction. In this case, the water tank cover 402 installed in the notch can easily extend forward over the first cavity 5 and extend to the top of the roller brush assembly 3. In other words, the structural arrangement of the top shell 212 in this embodiment will not restrict the water tank 4 and the water tank cover 402 from extending forward.

[0055] Specifically, in this embodiment, the water tank cover 402 and the top shell 212 may be non-standard planar structures, that is, the upper surfaces of the water tank cover 402 and the top shell 212 are a combination of a curved surface and a flat surface. This arrangement makes the upper surface of the floor brush 2 formed by the top shell 212 and the water tank cover 402 include a smooth curved surface structure, which is convenient for reducing the collision of the floor brush 2 with other equipment when in use, and is also convenient for reducing the windward area of ​​the upper surface of the floor brush 2 and reducing the resistance of the floor brush 2 when moving. However, in order to avoid forming a large gap on the upper surface of the floor brush 2 and thus avoid the accumulation of dirt in the gap, in this embodiment, the connection between the water tank cover 402 and the top shell 212 should be flush, and the upper surfaces of the two should have a smooth transition.

[0056] Specifically, as mentioned above, part of the structure of the water tank 4 passes forward over the first cavity 5 and extends to the top of the roller brush assembly 3. This arrangement moves part of the structure of the water tank 4 to the first cavity 5, and uses the space of the omitted roller brush cover assembly to increase the installation space of the water tank 4, thereby avoiding the increase in the thickness and other dimensions of the floor brush 2 caused by the capacity requirements of the water tank 4, or avoiding the situation where the capacity of the water tank 4 is insufficient due to the size requirements of the floor brush 2 such as the thickness.

[0057] See also Figure 7More specifically, the lower front end of the water tank 4 has a curved surface, which is coaxially arranged with the roller brush assembly in the roller brush assembly 3, and there is a gap between the curved surface of the water tank 4 and the outer surface of the roller brush assembly. Structures such as a water diversion plate and a scraper may be provided on the curved surface at the front end of the water tank 4. A sewage suction port is provided on the shell 21 (generally the bottom shell 211), which is directly opposite to the position of the scraper. Furthermore, the water diversion plate may be integrally formed with the water tank 4, or may be designed to be separated from the water tank 4. When the water diversion plate and the water tank 4 are designed to be separated, the water diversion plate and the water tank 4 or the bottom shell 211 of the floor brush 2 are fixed by bolts or adhesives.

[0058] In this embodiment, the roller brush assembly includes a hollow roller 31 and a cleaning cloth sleeved outside the roller, the cleaning cloth is provided with a tuft of hair, and a driving member for driving the roller brush assembly to rotate includes a driving motor 32 and a driving shaft, the driving motor 32 is hinged to the cavity wall on one side of the roller brush cavity, so that the driving motor 32 can flip outward from the roller brush cavity, and the driving motor 32 flips out of the roller brush cavity, one end of the roller is sleeved outside the driving motor and mechanically connected to the driving motor, and a side plate is provided at the other end of the roller 31, and the side plate is pushed into the roller brush cavity, and the side plate is installed on the housing of the floor brush, so that the roller brush is installed in the roller brush cavity and can rotate under the drive of the driving motor 32, thereby reducing the space occupied by the driving motor 32 on the floor brush, lowering the center of gravity of the roller brush assembly, increasing the gravity of the roller brush assembly, and avoiding the phenomenon of the roller brush assembly tilting.

[0059] See also Figure 4 In this embodiment, the upper ends of the left and right side walls of the shell 21 gradually decrease from the back to the front; the minimum height H2 of the upper ends of the left and right side walls of the shell 21 is at least twice the height H1 of the upper end of the front wall of the first cavity 5.

[0060] Specifically, the upper ends of the left and right side walls of the housing 21 gradually decrease in the direction from back to front, and the upper surface of the housing 21 (the upper surface of the top shell 212 and the water tank cover 402) is arranged at the upper ends of the left and right side walls of the housing 21. In other words, the upper surface of the floor brush 2 gradually decreases in the direction from back to front. The upper surface of the entire floor brush 2 presents a structural form of low front and high back. This arrangement is convenient for reducing the area of ​​the wind-breaking surface at the front end of the floor brush 2, thereby reducing the air resistance of the floor brush 2 when in use. In addition, the minimum height of the upper ends of the left and right side walls of the housing 21 is at least twice the height of the upper end of the front wall at the front end of the first cavity 5. This arrangement allows the part of the water tank 4 that extends forward across the first cavity 5 to have sufficient height, thereby ensuring that the proportion of the volume of this part to the volume of the entire water tank 4 is not too low. Furthermore, this method is conducive to transferring a considerable part of the volume of the water tank 4 to the top of the roller brush assembly 3 at the front end of the floor brush 2, thereby helping to reduce the size of the space occupied by the water tank 4 assembly in the first cavity 5, and reducing the influence of the water tank 4 setting on the thickness and other dimensions of the floor brush 2. After a larger portion of the structure in the water tank 4 is transferred to above the roller brush assembly 3 , it is helpful to ensure the volume of the water tank 4 in the first chamber 5 .

[0061] Preferably, the minimum height of the upper ends of the left and right side walls of the shell 21 is twice the height of the upper end of the front wall of the first cavity 5. In some other embodiments, in order to match the height setting of the roller brush assembly 3, the multiple of the minimum height of the upper ends of the left and right side walls of the shell 21 and the height of the upper end of the front wall of the first cavity 5 should not be too high, so as to avoid the situation where the part of the water tank 4 extending to the front end of the floor brush 2 is too low, and thus it is inconvenient to extend above the roller brush assembly 3.

[0062] See also Figure 5-Figure 8 In this embodiment, the first cavity 5 has an inner lining layer 2121, and there is a gap between the inner lining layer 2121 and the left and right side walls and the bottom wall of the first cavity 5. That is, there is a gap between the inner lining layer 2121 and the left and right side walls and the bottom wall of the bottom shell. The front part of the top shell is recessed into the first cavity to form the inner lining layer, the rear side wall of the recessed part of the top shell is the partition, and the left and right side walls and the bottom wall of the recessed part of the top shell are the inner lining layer.

[0063] Specifically, the top shell 212 includes an upper half that participates in forming the upper surface of the floor brush 2 and a lower half that is concave relative to the upper half to form the inner lining layer at the first cavity 5, and the upper half and the lower half are integrally injection molded. More specifically, the height of the upper end of the partition 7 is much higher than the height of the front wall of the inner lining layer 2121 at the first cavity 5 so that the water tank 4 at the first cavity 5 can extend forward out of the first cavity 5.

[0064] In this embodiment, there is a gap between the inner lining layer 2121 and the left and right side walls and the bottom wall of the bottom shell 211. Specifically, the gaps between the left and right side walls of the inner lining layer 2121 and the left and right side walls of the bottom shell 211 corresponding thereto are side gaps, and the gap between the bottom wall of the inner lining layer 2121 and the bottom wall of the bottom shell 211 is the bottom gap. Preferably, the gap thickness of the left and right side gaps is the same. Preferably, the gap thickness of the side gap is the same as the gap thickness of the bottom gap.

[0065] In the case where there is a gap between the lining layer 2121 and the bottom shell 211, a corresponding water pipe or circuit line can be installed in the gap. The existence of the gap here can prevent the water pipe and the circuit line from being clamped and damaged when the water pipe or the circuit line is installed.

[0066] In this embodiment, the inner wall of the lining layer 2121 is consistent in shape with the outer wall of the water tank 4 , and a gap 214 is provided between the outer wall of the water tank 4 and the lining layer 2121 , and a supporting rib 215 is provided in the gap 214 .

[0067] Specifically, the inner wall of the lining layer 2121 is roughly square, and the portion of the water tank 4 installed in the first cavity 5 is also roughly square. Preferably, in general, the lower surface of the bottom shell 211 has a concave accommodating cavity, and the existence of the accommodating cavity makes the lower wall surface of the first cavity 5 convex to avoid the sewage suction pipe at the floor brush 2. Therefore, the bottom of the water tank 4 also has a convex avoidance gap to avoid the convex lower wall surface of the first cavity 5.

[0068] See also Figure 5-Figure 7 In this embodiment, a locking piece is provided at the lower part of the water tank 4, and a lock buckle 22 cooperating with the locking piece is provided in the gap. The buckling end of the lock buckle 22 extends out of the guide hole 2012 on the lining layer 2121 and cooperates with the locking piece of the water tank 4 to lock the water tank 4 in the first cavity 5.

[0069] Specifically, the locking member here can be a locking groove 403 provided on the left and right sides of the lower part of the water tank 4, and the locking groove 403 can be a square groove or a circular groove. The shape of the buckle end of the lock buckle 22 corresponding to the threshold value is adapted to the shape of the locking groove 403, and is also a corresponding square groove or circular groove. The buckle end of the lock buckle 22 can move along the left and right direction of the floor brush 2 so that the buckle end is plugged into the locking groove 403 or detached from the locking groove 403, thereby realizing the locking or unlocking of the lock buckle 22 and the locking member.

[0070] In some other embodiments, the locking member can be a locking ring protruding from the side wall of the water tank 4, the inner cavity of the locking ring is square or circular, etc., and the shape of the snapping end at the lock buckle 22 is adapted to the shape of the inner cavity of the locking ring.

[0071] More specifically, the lock buckle 22 is driven by an elastic member, which may be a metal spring or a hydraulic spring, etc. One end of the elastic member is fixed to the bottom shell 211, and the other end is fixedly connected to the end of the lock buckle 22 away from the buckling end. The end of the buckling end has two upper and lower inclined surfaces, which respectively form a certain angle with the horizontal plane, and the sharp corner of the buckling end faces the center direction of the first cavity 5. When in use, the up and down movement of the water tank 4 will drive the buckling end inclined surface of the lock buckle 22 to be subjected to force, and the inclined surface converts the thrust applied by the water tank 4 to the lock buckle 22 into a thrust away from the center of the first cavity 5. Therefore, there is no need to set an additional unlocking structure in this embodiment.

[0072] In this embodiment, the front ends of the side walls on the left and right sides of the lining layer 2121 are provided with limiting members, and the side walls on the left and right sides of the water tank 4 are provided with limiting structures that cooperate with the limiting members.

[0073] Specifically, the limiting member here can be a limiting column 23, the cross-section of the limiting column 23 is square or circular; and the limiting structure is a limiting hole 404, which extends upward from the lower surface of the front end of the water tank 4, that is, the upper end of the limiting column 23 is inserted into the limiting hole 404 from the lower surface of the water tank 4.

[0074] See also Figure 8 In this embodiment, a water inlet is provided on the side of the water tank 4, a water outlet valve 407 is provided at the lowest point of the bottom of the water tank 4, and an adapter 216 is provided on the bottom wall of the bottom shell 211 to connect with the water outlet valve 407, and the other end of the adapter 216 is connected to the flow channel on the water distribution plate.

[0075] Specifically, a through hole 2123 is provided on the inner lining layer 2121 , and the water outlet valve 407 is arranged to protrude from the bottom wall of the water tank 4 . The water outlet valve 407 passes downward through the through hole 2123 to dock with the adapter 216 .

[0076] See also Figure 8 and Fig. 9 In this embodiment, the bottom wall of the second chamber 6 is provided with an opening, and an electric connector 24 for charging the surface cleaning device is provided at the opening, and the electric connector 24 is arranged close to the partition 7. A vertical electrolytic water module 25 is also provided in the second chamber 6, and the electrolytic water module 25 is arranged close to the partition 7. Specifically, the electrolytic water module 25 here includes a water inlet 251 and a water outlet 252 as shown in the figure, and a flow channel for electrolytic water is formed between the water inlet 251 and the water outlet 252.

[0077] In order to further increase the installation space of the second cavity 6, the portion of the top shell 212 that blocks the upper port of the second cavity 6 in this embodiment bulges upward to increase the vertical spatial dimension of the second cavity 6, which is beneficial to reduce the dimension of the second cavity 6 in the front-to-back direction, increase the size of the first cavity 5 for installing the water tank 4, and ensure the internal capacity requirement of the water tank 4 at the first cavity 5.

[0078] Example 2

[0079] The structural arrangement of this embodiment is basically the same as that of Embodiment 1, except that the floor brush 2 in this embodiment is a single-layer arrangement.

[0080] For details, see Fig.11 , the top shell 212 only includes the part that participates in forming the upper surface of the floor brush 2. Specifically, the top shell 212 includes a main body covering the second cavity 6 and side panels extending forward from the left and right ends of the main body, respectively, and the side panels are fixed to the left and right ends of the upper surface of the bottom shell 211. That is, the top shell 212 does not include the concave part forming the first cavity 5. The bottom shell 211 of the first cavity 5 with the floor brush 2 is formed by the bottom wall. In this arrangement, the left and right side walls of the bottom shell 211 are the left and right side walls of the first cavity 5, and the partition 7 is integrally formed with the left and right side walls of the first cavity 5 and the bottom shell 211.

[0081] Preferably, the bottom shell 211 here can be a double-layer structure, the inner layer of the bottom shell 211 is used to form the first cavity 5, and the outer layer of the bottom shell 211 is used to form the outer side wall of the floor brush 2.

[0082] Example 3

[0083] The structural arrangement of this embodiment is basically the same as that of the embodiment 2, except that: in this embodiment, the inner lining layer, the top shell and the bottom shell are all separately arranged, and then the inner lining layer and the partition are fixedly connected to the top shell and the bottom shell. Specifically, the structure of the top shell in this embodiment is the same as that of the top shell in the embodiment 2. The bottom shell in this embodiment is a single-layer structure, the inner lining layer and the partition are integrally formed, and the inner lining layer and the partition are fixedly installed in the cavity of the bottom shell to separate the first cavity and the second cavity.

[0084] So far, the technical solution of the present application has been described in conjunction with the preferred embodiments of the foregoing text, but it is easy for those skilled in the art to understand that the protection scope of the present application is not limited to the above preferred embodiments. Without departing from the technical principles of the present application, those skilled in the art may split and combine the technical solutions in the above preferred embodiments, and may also make equivalent changes or replacements to the relevant technical features, and any changes, equivalent replacements, improvements, etc. made within the technical concept and / or technical principles of the present application will fall within the protection scope of the present application.

Claims

1. A surface cleaning device that can be laid flat for cleaning, comprising a water supply system, a dirt suction system, a floor brush and a body hinged to the floor brush, the floor brush comprising a shell and a roller brush assembly installed at the front end of the shell, a water tank is arranged in the shell, the water tank comprises a box body and a water tank cover covering the upper end of the box body, the shell comprises a top shell and a bottom shell with an open upper end, a partition is arranged at the shell for dividing the space in the shell into a first cavity and a second cavity along the front and rear directions of the floor brush, the first cavity is located in the front part of the second cavity, the top shell covers the upper port of the second cavity, the upper end of the first cavity is open, the water tank is installed in the first cavity, the rear end of the water tank cover is connected to the top shell and the connection is flush, the water tank cover and the top shell form the upper surface of the floor brush, and the water tank part structure passes forward over the front side wall of the first cavity and extends to above the roller brush assembly.

2. The surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: From the back to the front, the upper ends of the left and right side walls of the shell gradually decrease; the minimum height of the upper ends of the left and right side walls of the shell is at least twice the height of the upper end of the front wall of the first cavity.

3. The surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The first cavity has an inner lining layer, and there is a gap between the inner lining layer and the left and right side walls and the bottom wall of the first cavity.

4. The surface cleaning device capable of lying flat for cleaning according to claim 3, characterized in that: The front part of the top shell is recessed into the first cavity to form the inner lining layer, the rear side wall of the recessed part of the top shell is the partition plate, and the left and right side walls and the bottom wall of the recessed part of the top shell are the inner lining layer.

5. The surface cleaning device capable of lying flat for cleaning according to claim 3 or 4, characterized in that: The inner wall of the lining layer is consistent in shape with the outer wall of the water tank, and there is a gap between the outer wall of the water tank and the lining layer, and supporting ribs are arranged in the gap.

6. The surface cleaning device capable of lying flat for cleaning according to claim 3 or 4, characterized in that: A locking piece is provided at the lower part of the water tank, a lock buckle cooperating with the locking piece is provided in the gap, and the buckling end of the lock buckle extends out of the guide hole on the inner lining layer and cooperates with the locking piece of the water tank to lock the water tank in the first cavity.

7. The surface cleaning device capable of lying flat for cleaning according to claim 3 or 4, characterized in that: The front ends of the side walls on the left and right sides of the lining layer are provided with limiting pieces, and the side walls on the left and right sides of the water tank are provided with limiting structures that cooperate with the limiting pieces.

8. The surface cleaning device capable of lying flat for cleaning according to claim 3 or 4, characterized in that: A water inlet is arranged on the side of the water tank, a water outlet valve is arranged at the lowest point of the bottom of the water tank, a switching joint connected with the water outlet valve is arranged on the bottom wall of the bottom shell, and the other end of the switching joint is connected with the flow channel on the water distribution plate.

9. The surface cleaning device capable of lying flat for cleaning according to claim 8, characterized in that: The inner lining layer is provided with a through hole, the water outlet valve is protruding from the bottom wall of the water tank, and the water outlet valve passes downward through the through hole and docks with the adapter.

10. The surface cleaning device capable of lying flat for cleaning according to claim 1, characterized in that: The bottom wall of the second cavity is provided with an opening, at the opening is provided with an electrical connector for charging the surface cleaning device that can lie flat for cleaning, the electrical connector is arranged close to the partition, and a vertical electrolytic water module is also arranged in the second cavity, and the electrolytic water module is arranged close to the partition.

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