Surface cleaning equipment with underneath-arranged clean water tank

Abstract

The utility model belongs to the technical field of cleaning, and particularly provides surface cleaning equipment with an underlying clean water tank, which comprises a machine body and a ground brush, the lower end of the machine body is pivoted with the rear part of the ground brush, a containing cavity is arranged in the ground brush, the clean water tank is arranged in the containing cavity, and locking mechanisms are respectively arranged between the clean water tank and the left and right sides of the containing cavity. The water tank is locked in the accommodating cavity; a limiting structure is arranged between the bottom of the clean water tank and the bottom of the containing cavity, and the limiting structure and the locking mechanism are arranged in a staggered mode in the front-back direction of the floor brush.

Description

Technical Field

[0001] The utility model belongs to the technical field of cleaning electrical appliances, and specifically provides a surface cleaning device with a clean water tank disposed below. Background Art

[0002] With the development of cleaning technology, the function of being able to move along the surface to be cleaned and achieve cleaning through a roller brush has gradually become an essential requirement for surface cleaning equipment. Some surface cleaning equipment includes a body and a floor brush, the lower part of the body is pivotally connected to the rear part of the floor brush, a suction assembly, a sewage bucket and a clean water tank are arranged on the body, and a scraper bar, a water distribution plate with a water supply port and a sewage suction port are arranged at the front end of the floor brush from top to bottom. The clean water tank can supply water to the roller brush through the water diversion plate to wet the ground to be cleaned by the roller brush. The scraper strip continuously scrapes the tufts on the roller brush to scrape off the dirty liquid or dirt thereon. The suction assembly can suck the dirt on the roller brush into the sewage bucket through the sewage suction port on the floor brush. The floor brush is provided with a roller brush cover covering the front end of the roller brush to prevent the dirty liquid or dirt on the roller brush from being thrown forward by the roller brush. In order to prevent the roller brush cover from contacting the roller brush and bringing resistance to the movement of the roller brush, the roller brush cover generally has a gap with the roller brush. However, if the front end of the floor brush is hit, the roller brush cover will still vibrate or even flip over, which will not only make the surface cleaning device produce noise when working, but also cause the dirty liquid to be thrown out from the front end of the roller brush to pollute the ground secondary.

[0003] Chinese patent CN202321315322.6- discloses a technical solution in which a limit groove is provided on the mounting portion of the front cover of the cleaning device, and the front side of the floor brush body is provided with inner side walls located at the left and right ends of the first step portion and / or the second step portion, and the inner side wall is provided with a limit column that cooperates with the limit groove. The limit groove cooperates with the limit column to prevent the front cover from flipping over.

[0004] However, with the development of technology, in order to ensure the reliability of water supply by the water pump, the relevant technical scheme transfers the clean water tank from the body to the floor brush. For example, a water tank groove is formed on the upper cover, and the water tank is at least partially accommodated in the water tank groove. A motor, a circuit board and a water pump are provided on one side of the base, and a cavity for placing the water tank groove is formed on the other side. The water tank is detachably arranged on the floor brush to simplify the water path. The water tank is close to the water pump to reduce the pressure difference of the water pump, which is beneficial to extend the life of the water pump. The layout of the water tank, motor and other components of the floor brush maximizes the volume of the water tank, balances the center of gravity of the floor brush, and improves the stability of the floor brush.

[0005] However, during the use of the above-mentioned surface cleaning device, the clean water tank is arranged in the floor brush. During the rotation of the roller brush, the scraper strip continuously scrapes the roller brush. The rotation of the roller brush generates a mutual force on the scraper strip. Therefore, it will have a backward resistance to the floor brush, which may easily cause the front side of the floor brush to vibrate. The vibration of the front side of the floor brush may be easily transmitted to the clean water tank, thereby driving the front end of the entire clean water tank to repeatedly tilt upward. The repeated tilting of the clean water tank may further increase the vibration and noise of the floor brush during operation. In addition, the tilting or vibration of the clean water tank may also affect the water supply of the water pump. Utility Model Content

[0006] The utility model aims to provide a surface cleaning device with a clean water tank placed below, which can ensure that the clean water tank is stably installed in a floor brush, thereby avoiding vibration and noise caused by unstable installation of the clean water tank.

[0007] In order to achieve the above-mentioned purpose, one or more embodiments of the utility model provide a surface cleaning device with a clean water tank placed underneath, including a body and a floor brush, the lower end of the body and the rear of the floor brush are pivotally connected, a accommodating chamber is provided in the floor brush, the clean water tank is placed in the accommodating chamber, locking mechanisms are respectively provided between the clean water tank and the left and right sides of the accommodating chamber to lock the water tank in the accommodating chamber; a limiting structure is provided between the bottom of the clean water tank and the bottom of the accommodating chamber, and the limiting structure and the locking mechanism are staggered along the front and rear direction of the floor brush.

[0008] In at least one embodiment, the limiting structure includes a limiting groove arranged on the lower surface of the clean water tank and a limiting column arranged on the bottom of the accommodating cavity, and the limiting groove and the limiting column are arranged on one side of the floor brush.

[0009] In at least one embodiment, the locking mechanism includes locking grooves arranged on both sides of the clean water tank and locking blocks and elastic members arranged on both sides of the accommodating cavity, and the elastic member is used to drive the locking block to be inserted into the locking groove along the left and right direction.

[0010] In at least one embodiment, guide holes are provided on the left and right side walls of the accommodating cavity, locking blocks are provided in the guide holes, and an elastic member is provided in the inner cavity of the floor brush.

[0011] In at least one embodiment, the floor brush includes an upper shell and a lower shell, the upper shell and the lower shell enclose an inner cavity of the floor brush, the lower shell is provided with a leakage hole near the guide hole, and the lower shell is provided with a water retaining rib around the leakage hole.

[0012] In at least one embodiment, the locking block has an upper slope and a lower slope at one end facing the center of the accommodating cavity, and the distance between the upper slope and the lower slope gradually decreases in the direction approaching the center of the accommodating cavity.

[0013] In at least one embodiment, a roller brush is provided at the front end of the floor brush, and a water tank cover is provided at the upper port of the clean water tank. The water tank cover extends forward to form a roller brush cover to cover the top of the roller brush.

[0014] A water dividing plate is fixed at the lower part of the front end of the clean water tank, the front part of the water dividing plate is provided with an arc surface, and a water supply port is provided on the arc surface. The front end of the water tank cover forms an arc edge extending forward, and the arc edge extends forward along the direction of the arc surface.

[0015] In at least one embodiment, the upper surface of the clean water tank is concave and equipped with a handle, and the handle is arranged directly above the center of gravity of the clean water tank; or, two handles are arranged on the upper surface of the clean water tank, and the two handles are symmetrically arranged along the left and right directions of the clean water tank and are respectively located directly above the locking positions on both sides of the clean water tank.

[0016] In at least one embodiment, a concave cavity is formed in the middle of the lower surface of the clean water tank, and the concave cavity penetrates the clean water tank in the front-to-back direction, and the concave cavity is used to accommodate the sewage suction hose.

[0017] Beneficial effects of one or more of the above technical solutions:

[0018] (1) In this solution, the floor brush has a receiving cavity, in which a clean water tank is installed. The left and right sides of the clean water tank cooperate with the locking mechanism to achieve preliminary locking of the floor brush and the clean water tank, which can limit the shaking of the clean water tank in the front-to-back, left-to-right, and up-and-down directions relative to the receiving cavity. In this solution, a limiting structure is also provided between the bottom of the receiving cavity and the bottom of the clean water tank, which can further limit the shaking of the clean water tank and the floor brush in the front-to-back and left-to-right directions.

[0019] In addition, the locking structure and the limiting structure are staggered along the front and rear direction of the floor brush. This arrangement can achieve the stop limit at the front end of the clean water tank through the matching limit of the limiting structure or the locking structure when the clean water tank shakes in the up and down direction, which can avoid the vibration of the front end of the floor brush caused by the rotation of the roller brush, avoid the front end of the clean water tank in the floor brush from tilting up and reduce the shaking of the front end of the clean water tank, thereby reducing the vibration and shaking of the entire clean water tank and the floor brush, reducing noise, and ensuring the normal water supply of the water pump.

[0020] (2) The limiting structure in this solution includes a limiting groove on the lower surface of the clean water tank and a limiting column arranged at the bottom of the accommodating cavity, and the limiting column and the limiting groove are located on one side of the floor brush. In this arrangement, the limiting structure and the limiting groove can be quickly connected or disconnected with the lifting and lowering of the clean water tank, and thus the limiting structure does not need to avoid the clean water tank, which is conducive to simplifying the structural setting of the limiting structure.

[0021] (3) The locking structure in this solution includes locking grooves provided on both sides of the clean water tank and locking blocks and elastic members provided on both sides of the accommodating chamber. The elastic member can drive the locking block to be inserted into the locking groove along the left-right direction. In this arrangement, the locking block can be pressed into the locking groove by the elastic member, thereby avoiding the problem of loose locking of the locking mechanism caused by wear gap between the locking mechanism and the locking position due to long-term use. In addition, the elastic member drives the locking block to be inserted into the locking groove along the left-right direction. This arrangement facilitates the rapid locking and unlocking between the locking block and the locking groove, reducing the difficulty of matching the locking mechanism and the locking position.

[0022] (4) In this solution, guide holes are provided on the left and right side walls of the accommodating cavity, the locking block is provided in the guide holes, and an elastic member is provided in the inner cavity of the floor brush. This arrangement makes it easy to place the elastic member in the inner cavity of the floor brush to avoid affecting the disassembly and assembly of the clean water tank, and the locking block can move along the guide hole to achieve position avoidance of the locking block relative to the clean water tank before the locking groove is aligned with the locking block, thereby avoiding position interference between the locking mechanism and the locking position.

[0023] (5) In this solution, the floor brush includes an upper shell and a lower shell. A water leakage hole is provided near the guide hole of the lower shell, and a water retaining rib is provided around the water leakage hole of the lower shell. When the clean water tank overflows or leaks clean water, part of the leaked clean water enters the inner cavity of the floor brush along the guide hole, and the clean water is discharged from the inner cavity of the floor brush along the water leakage hole of the lower shell, so as to avoid excessive clean water accumulating in the inner cavity of the floor brush and affecting the normal use of other components.

[0024] In this solution, the water retaining rib surrounds the leakage hole; this arrangement can limit the clean water flowing into the inner cavity of the floor brush from the guide hole from escaping in the inner cavity of the floor brush, thereby allowing the water that leaks into the inner cavity of the floor brush to basically be discharged from the floor brush along the leakage hole.

[0025] (6) In this solution, the end of the locking block facing the center of the accommodating cavity has an upper slope and a lower slope, and the distance between the upper slope and the lower slope gradually decreases as it approaches the center of the accommodating cavity. This arrangement allows the clean water tank to move downward when subjected to a downward pressure greater than a set pressure and be locked in the accommodating cavity by the locking mechanism. The clean water tank can also move upward when subjected to an upward pulling force greater than a set pressure and cause the locking mechanism to unlock and escape from the accommodating cavity. That is, the locking mechanism in this solution does not need to be additionally provided with a corresponding unlocking structure, which facilitates the simplification of the locking mechanism.

[0026] (7) In this solution, a water tank cover is provided at the upper end of the clean water tank, and the water tank cover extends forward to form a roller brush cover to cover the roller brush. This arrangement can save the floor brush space occupied by the clean water tank, facilitate the removal of the water tank and the roller brush cover, and clean the roller brush cover. The roller brush cover can be cleaned synchronously when filling the clean water tank with water.

[0027] (8) In this solution, a water diversion plate is fixed to the lower part of the front end of the clean water tank, and a curved surface is provided at the front of the water diversion plate, on which a water supply port is provided. The front end of the water tank cover forms an curved edge extending forward, and the curved edge extends forward along the direction of the curved surface. In this arrangement, the clean water tank and the water diversion plate are fixed together, which can ensure the stability of the water supply from the water tank to the cleaning parts such as roller brushes, while further saving space for the floor brush and expanding the capacity of the clean water tank. In addition, this arrangement also makes it easy to remove the water diversion plate for cleaning when removing the clean water tank; compared to setting the water diversion plate on the housing of the floor brush, this solution facilitates timely cleaning of the water supply port on the water diversion plate to avoid blockage, improves the stability of the water supply from the clean water tank to the cleaning parts, and thus improves the cleaning effect.

[0028] (9) In this solution, when the locking block has an upper inclined surface and a lower inclined surface that cooperate with each other, the setting of the handle does not need to consider the linkage with the locking mechanism for locking and unlocking. In this case, the upper surface of the clean water tank is concave and the handle is installed at the concave portion, which is convenient for saving structural settings and optimizing the internal space of the floor brush. The handle is arranged directly above the center of gravity of the clean water tank. This arrangement makes it easy for the handle to be roughly directly above the center of gravity of the clean water tank, thereby avoiding the sinking caused by the user lifting the clean water tank by the handle.

[0029] Alternatively, the handle is symmetrically arranged along the left and right directions of the clean water tank and is located directly above the locking groove. This arrangement enables the lifting force applied by the operator to the clean water tank to be basically directly above the locking mechanism and the locking groove, thereby avoiding a large vertical deviation of the force between the clean water tank and the locking mechanism, and reducing the difficulty of locking and unlocking the clean water tank with the handle.

[0030] (10) In the present solution, the upper surface of the clean water tank is part of the upper surface of the floor brush. This arrangement can omit the use of an upper cover, thereby simplifying the structural arrangement of the entire floor brush and optimizing the internal space of the floor brush.

[0031] (10) In this solution, the upper surface of the clean water tank has an upward concave cavity, which runs through the clean water tank in the front-to-back direction. This arrangement makes it easier for the clean water tank to avoid the sewage suction hose, thereby optimizing the internal space design when the clean water tank is installed on the floor brush. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Some embodiments of the present application are described below with reference to the accompanying drawings, in which:

[0033] Figure 1 It is an axonometric schematic diagram of the overall structure in an embodiment of the utility model;

[0034] Figure 2 This is an axonometric diagram of a clean water tank provided at a floor brush in an embodiment of the utility model;

[0035] Figure 3It is a schematic diagram of the front view of the clean water tank in the embodiment of the utility model;

[0036] Figure 4 It is a schematic diagram of the process of removing the clean water tank from the floor brush in the embodiment of the utility model;

[0037] Figure 5 yes Figure 4 A schematic diagram of the structure enlargement of the middle C part;

[0038] Figure 6 It is a schematic diagram of the embodiment of the utility model in which the accommodating cavity is formed by the upper shell being concave;

[0039] Figure 7 It is a cross-sectional view of the floor brush in the main viewing direction in the embodiment of the utility model;

[0040] Figure 8 yes Figure 7 A schematic diagram of the structure of part A in the middle;

[0041] Fig. 9 is a cross-sectional view of the floor brush in the side view direction of the embodiment of the utility model;

[0042] Fig.10 yes Fig. 9 A schematic diagram of the structure of part B in the middle;

[0043] Fig.11 This is a schematic diagram of the embodiment of the utility model after the clean water tank is removed from the floor brush;

[0044] Fig.12 This is a schematic diagram of the floor brush in the embodiment of the utility model after the clean water tank and the upper shell are removed;

[0045] Fig.13 yes Fig.12 A schematic diagram of the structure of the D part;

[0046] Fig.14 It is a partial structural schematic diagram of the locking mechanism and the locking groove in the embodiment of the utility model;

[0047] Fig.15 It is a schematic diagram of the embodiment of the utility model in which the handle is fixed to the floor brush through screws and a sealing ring;

[0048] Fig.16 It is a schematic diagram of an embodiment of the utility model in which the handle is arranged above the center of gravity of the clean water tank;

[0049] Fig.17 It is a schematic diagram of an embodiment of the utility model in which the handle is arranged directly above the locking groove and the positioning hole.

[0050] Fig.18 It is a schematic diagram of an embodiment of the utility model in which the accommodating cavity is formed by the concave lower shell.

[0051] Reference numerals: 1, handle; 2, handle bar; 3, body; 4, floor brush; 41, clean water tank; 42, roller brush; 43, accommodating chamber; 44, upper shell; 45, lower shell; 46, horizontal gap space; 47, vertical gap space;

[0052] 411, concave cavity; 412, convexity; 413, water distribution plate; 4131, water supply port; 414, handle; 4141, screw; 4142, sealing ring; 415, arc edge; 416, locking groove; 417, limiting groove; 418, water storage cavity.

[0053] 431, limiting column; 432, locking mechanism; 4321, locking block; 4322, elastic member; 433, first water leakage hole; 434, water retaining rib; 435, second water leakage hole. DETAILED DESCRIPTION

[0054] 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.

[0055] 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.

[0056] 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.

[0057] In the present application, the surface cleaning device is a floor scrubber. The floor scrubber includes a pivotally connected floor brush and a body. A roller brush chamber is provided at the front of the lower surface of the floor brush, in which a roller brush is rotatably installed, and the direction of the rotation axis of the roller brush is parallel to the left and right direction of the floor brush. A rotating power member is also provided in the floor brush, and at least the driving end of the rotating power member extends into the roller brush chamber. The roller brush rotates around its own axis driven by the rotating power member. When in use, the roller brush presses the floor to be cleaned, and the entire floor brush is driven forward by the self-rotation of the roller brush, and the roller brush can generate relative friction with the floor to be cleaned to clean the floor.

[0058] like Figure 1-Figure 16 As shown, this embodiment provides a surface cleaning device with a clean water tank placed below, including a body 43 and a floor brush 4, the lower end of the body 43 is pivotally connected to the rear of the floor brush 4, a receiving chamber 43 is provided in the floor brush 4, a clean water tank 41 is placed in the receiving chamber 43, locking mechanisms 432 are respectively provided between the clean water tank 41 and the left and right sides of the receiving chamber 43 to lock the water tank in the receiving chamber 43; a limiting structure is provided between the bottom of the clean water tank 41 and the bottom of the receiving chamber 43, and the limiting structure and the locking mechanism 432 are staggered along the front-rear direction of the floor brush 4. Specifically, the upper end of the receiving chamber 43 is open and the upper end is located at the upper end of the floor brush 4.

[0059] In this embodiment, in order to reduce the thickness of the machine body 43, so that the surface cleaning device can adapt to the cleaning of a lower space: the installation position of the clean water tank 41 is moved from the machine body 43 to the floor brush. The transfer of the clean water tank 41 to the floor brush also facilitates the reduction of the weight of the entire machine body 43, thereby reducing the load borne by the user at the handle 1. In addition, a handle bar 2 is generally fixed to the upper end of the machine body 43, and the handle 1 is installed at the top of the handle bar 2.

[0060] Specifically, the accommodating cavity 43 should have at least three side walls along the rear side and the left and right sides of the floor brush, and a bottom wall. The specific shape of the accommodating cavity 43 is determined according to the position restrictions of components such as the roller brush 42, the rotating power part and the circuit board in the floor brush.

[0061] See also Figure 5 The floor brush in this embodiment includes an upper shell 44 and a lower shell 45, and the upper shell 44 of the floor brush is concave to form a receiving cavity 43. It can be seen that after the clean water tank 41 is transferred from the body 43 to the receiving cavity 43 of the floor brush, the existence of the clean water tank 41 will occupy the installation of other components in the original floor brush.

[0062] In order to prevent the clean water tank 41 from vibrating and tilting upward due to the rotation of the roller brush 42: in this embodiment, a locking mechanism 432 and a limiting structure are installed between the clean water tank 41 and the accommodating chamber 43. The locking structure and the limiting structure are staggered in the front and rear directions of the clean water tank 41 and the floor brush, so that the clean water tank 41 abuts against the accommodating chamber 43 at two positions in the front and rear directions to increase the stability of the abutment between the two. Avoid the front end of the clean water tank 41 shaking or even tilting due to the lack of a limiting or locking structure.

[0063] In this embodiment, the locking structure is arranged at the rear of the floor brush, and the limiting structure is arranged at the front of the floor brush. This arrangement can make full use of the characteristics of the deep and large rear side of the accommodating cavity 43, which is conducive to reducing the difficulty of setting the locking mechanism 432. In other embodiments, if the use requirements are met, the locking mechanism 432 can also be arranged at the front of the floor brush, and the limiting structure can be arranged at the rear of the floor brush.

[0064] Specifically, the floor brush has a left side surface opposite to the left side wall of the accommodating chamber 43, and a right side surface opposite to the right side wall of the accommodating chamber 43. In this embodiment, locking positions are respectively provided on the left and right sides of the clean water tank 41, and locking mechanisms 432 are respectively provided on the left and right walls of the accommodating chamber 43, and the locking mechanisms 432 can cooperate with the locking positions to lock the floor brush. Preferably, the locking positions are symmetrically arranged with respect to the central plane of the clean water tank 41 along the front-to-back direction. Similarly, the locking mechanisms 432 are symmetrically arranged with respect to the central plane of the accommodating chamber 43 along the front-to-back direction. When the locking mechanism 432 is locked in the locking position, the floor brush can limit the position movement of the clean water tank 41 along the front-to-back, left-to-right, and up-and-down directions.

[0065] In some other embodiments, the locking position may be set on the left and right side walls of the accommodating cavity 43 , and the locking mechanism may be installed on the left and right side surfaces of the clean water tank 41 .

[0066] It is known that in order to adapt to the situation where the roller brush 42 is set in the floor brush, the depth of the accommodating chamber 43 toward the rear side of the floor brush is relatively large, and the depth of the accommodating chamber 43 toward the roller brush 42 position on the front side of the floor brush gradually becomes shallower. At the same time, the position of the water dividing plate 413 on the front side of the clean water tank 41 is not supported and limited by the bottom wall of the accommodating chamber 43. That is, the front end of the clean water tank 41 close to the roller brush 42 is equivalent to an air suspension setting. In this embodiment, the locking position and the locking mechanism 432 are set at the deepest position of the accommodating chamber 43 (that is, the rear side of the accommodating chamber 43); and this setting method will cause the connection between the front end of the clean water tank 41 and the floor brush to be not tight enough. In particular, when the front part of the clean water tank 41 vibrates and tilts upward due to the action of the roller brush 42, the locking mechanism 432 may not be sufficient to completely fix the front end of the clean water tank 41. The front end of the clean water tank 41 vibrates and tilts up repeatedly within a small range, which still generates noise and affects the stability of the floor brush.

[0067] In order to further achieve a stable installation of the clean water tank 41 inside the floor brush accommodating chamber 43, the limiting structure includes a limiting column 431 and a limiting groove 417. The limiting groove 417 is provided on the lower surface of the clean water tank 41, and the limiting column 431 that can be plugged into the limiting groove 417 is provided in the accommodating chamber 43. Along the front and rear direction of the floor brush, the limiting groove 417 and the locking position are staggered. Specifically, the locking groove 416 is located at the front end of the clean water tank 41.

[0068] Specifically, the limiting groove 417 can be exposed on the left and right sides of the clean water tank 41, and the limiting groove 417 simultaneously penetrates the bottom surface of the clean water tank 41. Correspondingly, the limiting column 431 is set close to the inner wall surface of the accommodating cavity 43. In some other embodiments, the limiting groove 417 can be a blind hole-shaped notch extending upward from the ground of the clean water tank 41, and the edge of the limiting groove 417 is at a certain distance from the side of the clean water tank 41. Correspondingly, the limiting column 431 has a certain distance from the left and right side walls of the accommodating cavity 43.

[0069] More specifically, the limiting posts 431 and the limiting grooves 417 are symmetrically arranged on both sides of the floor brush along the left-right direction. In some other embodiments, the number of the limiting posts 431 and the limiting grooves 417 can be single, that is, only a single limiting post 431 and limiting groove 417 are arranged on one side of the clean water tank 41 along the left-right direction. Alternatively, in other embodiments, a plurality of limiting posts 431 and limiting grooves 417 are respectively arranged on both sides of the clean water tank 41 along the left-right direction (for example, the left and right sides of the clean water tank 41 have two limiting grooves 417, and two corresponding limiting posts 431 are arranged on each side of the accommodating cavity 43), as long as the limiting posts 431 and the limiting grooves 417 are symmetrical about the left-right direction of the floor brush.

[0070] In some other embodiments, the limiting column may be disposed on the lower surface of the clean water tank 41 , and the limiting groove may be disposed on the bottom surface of the accommodating cavity 43 .

[0071] In order to facilitate the alignment and insertion between the limiting column 431 and the limiting groove 417, in this embodiment, the top end of the limiting column 431 is generally set to a rounded or conical structure.

[0072] The above-mentioned staggered arrangement of the limiting structure and the locking mechanism 432 along the front-to-back direction of the floor brush should be understood as: along the vertical projection of the floor brush, the limiting structure and the locking mechanism 432 do not overlap.

[0073] In this embodiment, the water-dividing plate 413 in the front shell of the floor brush is integrated with the clean water tank 41, thereby saving the water supply pipeline between the water-dividing plate and the clean water tank 41, and saving the internal space of the floor brush. Specifically, the water-dividing plate 413 is fixed to the lower part of the front end of the clean water tank 41, and the front part of the water-dividing plate 413 is provided with an arc surface, and the arc surface is provided with a water supply port. The front end of the water tank cover forms an arc edge 415 extending forward, and the arc edge 415 extends forward along the direction of the arc surface. The water-dividing plate 413 is fixed to the front side of the clean water tank 41, which is a part of the structure of the shell of the clean water tank 41. The two can be integrally injection molded, or they can be manufactured separately and then sealed and bonded by an adhesive. At this time, it is equivalent to the shell of the floor brush having a gap near the roller brush 42 (the accommodating chamber 43 has no corresponding side wall at the gap position to limit the clean water tank 41). When the clean water tank 41 is installed in place, the water-dividing plate 413 on the front side of the clean water tank 41 fills the gap.

[0074] See also Figure 3 As shown, the front side of the clean water tank 41 has a row of water supply ports 4131 arranged transversely, the water supply ports 4131 face the roller brush 42 cavity, and the extension direction of the water supply ports 4131 is parallel to the axial direction of the roller brush 42. Clean water in the clean water tank 41 is discharged to the roller brush 42 through the water supply ports 4131, so that the roller brush 42 is soaked and wetted.

[0075] More specifically, because the water dividing plate 413 on the front side of the clean water tank 41 needs to surround the outer circumferential contour of the roller brush 42, the lower surface of the clean water tank 41 presents a large height change along the front-to-back direction. That is, the lower surface of the front side of the clean water tank 41 shown in the figure is higher, and the lower surface of the rear side of the clean water tank 41 is lower. Generally, the clean water of the clean water tank 41 is mainly concentrated in the water storage chamber 418 on the rear side, so the locking position and the locking mechanism 432 that play a locking function need to be set at the rear side of the clean water tank 41 where the weight is concentrated. Correspondingly, the height of the limit groove 417 set on the front side of the clean water tank 41 will be higher than the height of the locking position.

[0076] In this embodiment, the locking position includes a locking groove 416 provided on the side of the clean water tank 41, and the locking mechanism 432 includes a locking block 4321 and an elastic member 4322, and the elastic member 4322 is used to drive the locking block 4321 to be plugged into the locking groove 416 along the left and right directions. Specifically, the locking groove 416 can be a square groove concave from the left and right sides of the clean water tank 41 to the center direction of itself. In some other embodiments, the locking groove 416 can also be a regular hexagon or a circle or other structural forms. Correspondingly, along the left and right directions of the clean water tank 41, the vertical cross-section of the locking block 4321 is a square. In some other embodiments, the vertical cross-section of the locking block 4321 can also be a circle that matches the circular locking groove 416.

[0077] Specifically, the elastic member 4322 is preferably a metal spring arranged along the left and right sides of the floor brush in the direction of the spiral axis. In some other embodiments, the elastic member 4322 can be a hydraulic spring rod or a pneumatic spring rod.

[0078] Because the locking block 4321 is driven by the elastic member 4322, the position of the locking block 4321 and the locking groove 416 along the left and right direction of the floor brush can be adjusted so that the locking block 4321 can be easily disengaged from the locking groove 416 to unlock, or the locking block 4321 is pressed tightly in the locking groove 416 to achieve locking. In this embodiment, the locking block 4321 is pressed tightly in the locking groove 416 by the elastic member 4322, which can avoid the wear gap between the locking mechanism 432 and the locking position caused by long-term use, and avoid the problem of the locking mechanism 432 not being locked tightly due to wear. In addition, the elastic member 4322 drives the locking block 4321 to achieve rapid locking and unlocking between the locking block 4321 and the locking groove 416, reducing the difficulty of matching the locking mechanism 432 and the locking position.

[0079] In some other embodiments, the locking position can be a convex locking ring, which is square or circular in shape, and is fixed to the left and right sides of the clean water tank 41 or the left and right side walls of the accommodating chamber 43. When in use, the locking block 4321 of the locking mechanism 432 is inserted into the locking ring. In addition, in other structural forms, the locking mechanism 432 may not be driven by the elastic block, for example, the locking mechanism 432 is a pin shaft, and the pin shaft is manually inserted into the locking groove 416.

[0080] In this embodiment, guide holes are provided on the left and right side walls of the accommodating cavity 43, locking blocks 4321 are provided in the guide holes, and an elastic member 4322 is provided in the inner cavity of the floor brush. At this time, the elastic member 4322 is provided in the inner cavity of the floor brush to avoid affecting the disassembly and assembly of the clean water tank 41, and the locking block 4321 can move along the guide hole to achieve the position avoidance of the locking block 4321 with respect to the clean water tank 41 before the locking groove 416 is not aligned with the locking block 4321, so as to avoid position interference between the locking mechanism 432 and the locking position.

[0081] Specifically, the shape and size of the guide hole are compatible with the shape and size of the guide block. For example, the guide block and the guide hole are both circular, or both are square. Specifically, one end of the elastic member 4322 is fixed in the inner cavity of the floor brush, and the other end extends axially along the guide hole and is fixed to the guide block.

[0082] In this embodiment, the inner cavity of the floor brush is enclosed between the upper shell 44 and the lower shell 45. When the accommodating cavity 43 is formed by the depression of the upper shell 44, the front and back sides and the left and right sides of the accommodating cavity 43 and the lower side of the accommodating cavity 43 are respectively covered with a double-layer structure of the upper shell 44 and the lower shell 45. A gap space is enclosed between the upper shell 44 and the lower shell 45. At this time, the guide hole is provided on the side wall of the upper shell 44, and water can enter the gap space through the guide hole, which may easily cause the floor brush to accumulate too much water, causing the floor brush to have an odor or be damaged. In order to drain the water that enters the gap space, the lower shell 45 is provided with a water leakage hole near the guide hole, and a water retaining rib 434 is arranged around the water leakage hole.

[0083] Part of the clean water leaked from the clean water tank 41 enters the inner cavity of the floor brush along the guide hole, and the clean water is discharged from the floor brush along the water leakage hole near the guide hole at the lower shell 45, so as to avoid excessive accumulation of clean water in the inner cavity of the floor brush and affect the normal use of other components. The water retaining rib 434 can limit the distribution of the clean water flowing into the inner cavity of the floor brush from the guide hole in the inner cavity of the floor brush, so that the water leaking into the inner cavity of the floor brush is basically discharged from the floor brush along the water leakage hole.

[0084] Specifically, the leakage hole at the lower shell 45 is the second leakage hole 435, and the lower surface of the accommodating cavity 43 also has a first leakage hole 433, which vertically penetrates the upper shell 44 and the lower shell 45 of the floor brush. This arrangement can use the first leakage hole 433 to drain the water on the bottom surface of the accommodating cavity 43.

[0085] Specifically, Fig.14 As shown, near the accommodating cavity 43, the gap between the upper shell 44 and the lower shell 45 of the floor brush is small, and a gap space can be formed, which extends from top to bottom. More specifically, the gap space includes a vertical gap space 47 extending vertically and a transverse gap space 46 extending transversely formed by the upper shell 44 and the lower shell 45. In this embodiment, a water retaining rib 434 is arranged in the transverse gap space 46, and corresponding water retaining ribs 434 are respectively arranged on the bottom wall of the upper shell 44 and the upper wall of the lower shell 45, and the two water retaining ribs 434 are fitted to each other to prevent the clean water flowing down from the vertical gap space 47 from escaping to the transverse gap space.

[0086] In this embodiment, the locking block 4321 has an upper inclined surface and a lower inclined surface at one end facing the center of the accommodating chamber 43, and the distance between the upper inclined surface and the lower inclined surface gradually decreases along the direction close to the center of the accommodating chamber 43. At this time, the clean water tank 41 can move downward under the condition of being subjected to a downward pressure greater than the set pressure and be locked in the accommodating chamber 43 by the locking mechanism 432. The clean water tank 41 can also move upward under the condition of being subjected to an upward pulling force greater than the set pressure and make the locking mechanism 432 unlock and escape from the accommodating chamber 43. That is, in this solution, the locking mechanism 432 does not need to be additionally provided with a corresponding unlocking structure, which is convenient for simplifying the locking mechanism 432. Specifically, the upper inclined surface and the lower inclined surface are symmetrically arranged about the transverse center axis of the locking block 4321. In some other structural settings, the two may not be symmetrical about the center axis of the locking block 4321.

[0087] In this embodiment, when the locking block 4321 has an upper inclined surface and a lower inclined surface that cooperate with each other, the setting of the handle 414 does not need to consider the linkage with the locking mechanism 432 for locking and unlocking. In this case, the handle 414 is installed in the recessed notch on the upper surface of the clean water tank 41, which is convenient for saving structural settings and optimizing the internal space of the floor brush.

[0088] For details, see Fig.15 The handle 414 is fixed to the notch of the clean water tank 41 by means of screws 4141 , and a sealing ring 4142 is also provided at the screw 4141 hole of the clean water tank 41 .

[0089] As one of the installation positions of the handle 414: the handle 414 is arranged just above the center of gravity of the clean water tank 41 (i.e. Fig.16 The handle 414 is located at the front side of the center line of the clean water tank 41 along the front-to-back direction, thereby preventing the clean water tank 41 from sinking when the user lifts it with the handle 414. As the amount of water in the clean water tank 41 increases or decreases, the center of gravity of the clean water tank 41 changes. In this embodiment, the handle 414 is located directly above the center of gravity of the clean water tank 41 when it is empty. After the water stored in the clean water tank 41 is used up, it can ensure that the force application point of the handle 414 to the clean water tank 41 is the center of gravity of the clean water tank 41.

[0090] In this embodiment, the upper surface of the clean water tank 41 is a part of the upper surface of the floor brush. At the same time, a roller brush 42 is provided at the front end of the floor brush 4, and a water tank cover is provided at the upper end of the clean water tank 41. The water tank cover extends forward to form a roller brush cover to cover the top of the roller brush 42.

[0091] In this embodiment, the middle of the lower surface of the clean water tank 41 has a concave cavity 411, which penetrates the clean water tank 41 in the front-to-back direction, and is used to accommodate the sewage suction hose. At this time, the clean water tank 41 uses the concave cavity 411 to avoid the sewage suction hose, and then cooperates to achieve the optimized design of the internal space when the clean water tank 41 is installed on the floor brush. Correspondingly, it can be understood here that the lower surface of the clean water tank 41 has two protrusions 412, the two protrusions 412 are arranged in the left-right direction and there is a gap between the two protrusions 412, and the gap position is the above-mentioned concave cavity 411.

[0092] Example 2

[0093] See also Fig.17 and Fig.18 This embodiment also provides a surface cleaning device with a clean water tank 41 placed below, which has a substantially similar structure to that of the first embodiment, except that:

[0094] There are two handles 414, which are symmetrically arranged along the left and right directions of the clean water tank 41, and are respectively located directly above the locking grooves 416 on both sides of the clean water tank 41. At this time, the upward force applied by the operator to the clean water tank 41 is basically directly above the locking mechanism 432 and the locking groove 416, so as to avoid a large deviation between the force between the clean water tank 41 and the locking mechanism 432 and the vertical direction, and reduce the difficulty of the handles 414 to achieve locking and unlocking of the clean water tank 41.

[0095] See also Fig.17 In this embodiment, the floor brush also includes an upper shell 44 and a lower shell 45, but the upper shell 44 is basically only located on the upper surface of the floor brush, that is, the upper shell 44 is roughly a cover plate structure. The lower shell 45 is concave downward near the upper surface of the floor brush to form a receiving cavity 43, so that the lower side of the receiving cavity 43 can be a single-layer structure. In order to install other components in the floor brush, part of the lower shell 45 can also be set to double-layer.

[0096] In this embodiment, the locking structure is a magnetic structure, specifically, the locking structure includes a first magnetic member and a second magnetic member used in pairs and attracted by magnetic force. One of the first magnetic member and the second magnetic member is fixed to the side wall of the accommodating cavity 43, and the other is fixed to the side of the clean water tank 41.

[0097] Compared with Example 1, in this embodiment, limiting protrusions or limiting ribs are used to replace limiting columns, and limiting pits and limiting notches are used to replace limiting grooves; as long as the structures and sizes of the two parts of the limiting structure are compatible, the two parts can be plugged in and aligned in the up and down directions to achieve stop.

[0098] 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 with a clean water tank placed below, comprising a body and a floor brush, wherein the lower end of the body is pivotally connected to the rear of the floor brush, a receiving cavity is provided in the floor brush, and the clean water tank is placed in the receiving cavity, characterized in that: A locking mechanism is provided between the clean water tank and the left and right sides of the accommodating chamber to lock the water tank in the accommodating chamber; A limiting structure is provided between the bottom of the clean water tank and the bottom of the accommodating cavity, and the limiting structure and the locking mechanism are staggered along the front-rear direction of the floor brush.

2. The surface cleaning device with a clean water tank placed below according to claim 1, characterized in that: The limiting structure comprises a limiting groove arranged on the lower surface of the clean water tank and a limiting column arranged on the bottom of the accommodating cavity, and the limiting groove and the limiting column are arranged on one side of the floor brush.

3. The surface cleaning device with a clean water tank placed below according to claim 1, characterized in that: The locking mechanism comprises locking grooves arranged on both sides of the clean water tank and locking blocks and elastic members arranged on both sides of the accommodating cavity, wherein the elastic member is used to drive the locking blocks to be inserted into the locking grooves along the left-right direction.

4. The surface cleaning device with a clean water tank placed below according to claim 3, characterized in that: The left and right side walls of the accommodating cavity are provided with guide holes, locking blocks are provided in the guide holes, and the elastic member is provided in the inner cavity of the floor brush.

5. The surface cleaning device with a clean water tank placed below according to claim 4, characterized in that: The floor brush comprises an upper shell and a lower shell, the upper shell and the lower shell enclose an inner cavity of the floor brush, the lower shell is provided with a water leakage hole near the guide hole, and the lower shell is provided with a water retaining rib around the water leakage hole.

6. The surface cleaning device with a clean water tank placed below according to claim 3, characterized in that: The locking block has an upper slope and a lower slope at one end facing the center of the accommodating cavity, and the distance between the upper slope and the lower slope gradually decreases in the direction approaching the center of the accommodating cavity.

7. The surface cleaning device with a clean water tank placed below according to claim 1, characterized in that: A roller brush is arranged at the front end of the floor brush, and a water tank cover is arranged at the upper end of the clean water tank. The water tank cover extends forward to form a roller brush cover to cover the top of the roller brush.

8. The surface cleaning device with a clean water tank placed below according to claim 7, characterized in that: A water dividing plate is fixed at the lower part of the front end of the clean water tank, the front part of the water dividing plate is provided with an arc surface, and a water supply port is provided on the arc surface. The front end of the water tank cover forms an arc edge extending forward, and the arc edge extends forward along the direction of the arc surface.

9. The surface cleaning device with a clean water tank placed below according to claim 6, characterized in that: The upper surface of the clean water tank is concave and equipped with a handle, and the handle is arranged directly above the center of gravity of the clean water tank; or, two handles are arranged on the upper surface of the clean water tank, and the two handles are symmetrically arranged along the left and right directions of the clean water tank and are respectively located directly above the locking mechanisms on both sides of the clean water tank.

10. The surface cleaning device with a clean water tank placed below according to claim 1, characterized in that: A concave cavity is formed in the middle of the lower surface of the clean water tank, and the concave cavity penetrates the clean water tank in the front-to-back direction. The concave cavity is used to accommodate a sewage suction hose.

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