CN212630685U - Water tank and cleaning robot - Google Patents

Abstract

The utility model discloses a water tank and cleaning machines people, wherein, cleaning machines people is applied to the water tank, the inside of water tank is formed with the water storage chamber, the water tank has the concatenation side, the concatenation side is provided with the orientation the inside sunken region of stepping down of water tank, the concatenation side of water tank is used for the body concatenation with cleaning machines people, the region of stepping down is used for holding the partial structure of cleaning machines people's body. The utility model discloses technical scheme has improved the whole water storage performance of water tank through the opposite sex setting of water tank.

Description

Water tank and cleaning robot

Technical Field

The utility model relates to an intelligence cleaning device technical field, in particular to water tank and cleaning machines people.

Background

The cleaning robot mainly replaces manpower and is used for cleaning the family environment. The cleaning robot comprises a body, a water tank is mounted on the body, a mop cloth is mounted at the bottom of the cleaning robot, and water is supplied to the mop cloth by the water tank for cleaning the ground.

However, the conventional cleaning robot has a body with a large number of internal structures, so that the water supply tank is not installed in an excessive space outside. Therefore, in order to match the model of the cleaning robot, the water tank on the market is made smaller so as to be mounted on the body of the cleaning robot. But in this way the volume of the tank is greatly reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a water tank aims at solving the little problem of current water tank volume.

In order to achieve the above object, the utility model provides a cleaning robot is applied to the water tank, the inside of water tank is formed with the water storage chamber, the water tank has the concatenation side, the concatenation side is provided with the orientation the inside sunken region of stepping down of water tank, the concatenation side of water tank is used for the body concatenation with cleaning robot, the region of stepping down is used for holding the partial structure of cleaning robot's body.

Preferably, the top of the abdicating area is open.

Preferably, the water storage cavity of the water tank is provided with two main water storage cavities which are positioned at two opposite sides of the abdicating area, and an auxiliary water storage cavity which is arranged corresponding to the abdicating area and is communicated with the two main water storage cavities;

the water storage space of the two main water storage cavities is larger than that of the auxiliary water storage cavity.

Preferably, vice water storage chamber includes vertical water storage space and horizontal water storage space, vertical water storage space is close to the regional lateral part of stepping down, horizontal water storage space is close to the regional bottom of stepping down, the cross sectional area in vertical water storage space is greater than the cross sectional area in horizontal water storage space.

Preferably, the horizontal widths of the two main water storage cavities are gradually reduced in a direction approaching to the auxiliary water storage cavity.

Preferably, an orthographic projection area of the auxiliary water storage cavity in the horizontal direction is larger than that of the main water storage cavity in the horizontal direction.

Preferably, the abdicating area is provided with a bottom wall arranged near the bottom of the water tank and a side wall extending from the bottom wall to the bottom away from the water tank, and the connection between the bottom wall and the side wall is smooth and transitional.

Preferably, a support is connected below the bottom wall, and the support is supported at the bottom of the water tank.

Preferably, the side wall is close to the position of concatenation side is provided with the depressed part, the depressed part runs through the concatenation side setting of water tank, be provided with the installation reinforcement in the depressed part.

Preferably, the concatenation side of water tank still is provided with the direction installation piece, the direction installation piece is used for guiding the water tank cooperates with cleaning machines people's body concatenation.

Preferably, the guide mounting blocks are arranged on two sides of the abdicating area, and the two guide mounting blocks are symmetrically distributed.

Preferably, the cross-sectional area of the mounting block decreases progressively in a direction away from the splice side of the water tank.

Preferably, the water tank includes bottom plate and casing, the casing is installed on the bottom plate, the regional by the casing part is established concavely to give way the formation.

Preferably, a water storage space is formed above the bottom plate, and the water storage space of the bottom plate and the shell cavity of the shell enclose a water storage cavity of the water tank.

Preferably, the bottom plate has the minimum water level region that corresponds the area of stepping down and with the slope water conservancy diversion region that minimum water level region borders on, the water tank is including setting up in the diversion mechanism in the minimum water level region of bottom plate.

The utility model also provides a cleaning machines people, including body and foretell water tank, the water tank can splice on cleaning machines people's the body.

Preferably, the cleaning robot further comprises a mopping assembly, a water pumping device and a water diversion member;

the mopping assembly is detachably connected to the bottom of the water tank;

the pumping device may pump the liquid within the water storage chamber to a water diversion member that diverts the liquid to a plurality of regions on the floor assembly.

In the water tank disclosed by the technical scheme of the application, the splicing side of the water tank can yield towards the inner concave yielding area of the water tank, and the yielding area can be used for yielding the structure of the cleaning robot, so that the influence on the structure of the cleaning robot is avoided. Secondly, the structure beside the abdicating area of the water tank is provided with a water storage cavity with larger volume, thereby ensuring the water storage function of the water tank.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic view of the bottom view structure of the cleaning robot of the present invention;

fig. 2 is a schematic structural diagram of an embodiment of the water tank of the present invention;

FIG. 3 is a schematic top view of the water tank of FIG. 2;

FIG. 4a is a view of the water tank of FIG. 3 rotated 90 counterclockwise;

FIG. 4b is a cross-sectional view taken along line I-I of FIG. 4 a;

FIG. 4c is a cross-sectional view taken along line Y-Y of FIG. 4 a;

FIG. 5 is an exploded view of another embodiment of the water tank of the present invention;

FIG. 6 is a schematic view of the structure of the water tank of FIG. 2;

fig. 7 is an enlarged view at P in fig. 6.

The reference numbers illustrate:

the objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, left, right, front and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit ly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, it should be considered that the combination of the technical solutions does not exist, and is not within the protection scope of the present invention.

The embodiment of the application provides a cleaning robot 200, which comprises a body and a water tank 400, wherein the water tank 400 can be spliced on the body of the cleaning robot 200.

It is understood that the cleaning robot 200 may be a sweeping robot, a sweeping and mopping robot, a floor cleaning robot, a window cleaning robot, a hand-held cleaner, a hand-pushed cleaner, etc., and is not limited thereto.

The shape of the body 230 of the cleaning robot 200 is not limited, and may be, for example, a circle, a square, an ellipse, a triangle, a polygon, or the like. The present embodiment is explained by explaining that the shape of the main body 230 of the cleaning robot 200 is a circle.

Referring to fig. 1, the cleaning robot 200 includes a body 230, the body 230 may include a chassis 231 and an upper cover assembly 232, the upper cover assembly 232 is detachably mounted on the chassis 231 to protect various functional components inside the cleaning robot 200 from being damaged by violent impacts or unintentionally dripped liquid during use; the chassis 231 and/or the upper cover assembly 232 are used to carry and support various functional components. In an alternative embodiment, the body 230 of the cleaning robot 200 may also be in other design configurations, for example, the body 230 is an integrally formed structure, a structure separately arranged from left to right, and the embodiment of the present invention does not limit the material, shape, structure, etc. of the body 230. The inner cavity for providing an arrangement space for the internal components of the cleaning robot 200 is formed between the chassis 231 and the upper cover assembly 232. The cleaning robot 200 may arrange a vacuum pump, a circuit board, a floor detection sensor, a collision detection sensor, a wall sensor, and the like in the inner cavity.

The cleaning robot 200 may be designed to autonomously plan a path on the ground, or may be designed to move on the ground in response to a remote control command. In the embodiment of the present application, the cleaning robot 200 includes a traveling mechanism installed on the chassis 231, the traveling mechanism includes two driving wheels 500, at least one universal wheel 600, and a motor for driving the wheels to rotate, the two driving wheels 500 and the universal wheel 600 at least partially protrude out of the bottom of the chassis 231, for example, the two wheels may be partially hidden in the chassis 231 under the effect of the self weight of the cleaning robot 200. In an alternative embodiment, the travel mechanism may further include any one of a track triangle wheel, a Mecanum wheel, and the like.

The cleaning robot 200 may include a cleaning assembly detachably coupled to a body 230 of the robot 200. The cleaning assembly includes one or both of a mid-sweep assembly and a scrubbing assembly. The middle sweeping assembly comprises at least one middle sweeping brush 700, the at least one middle sweeping brush 700 can be arranged in an accommodating groove formed in the bottom of the chassis 231, a dust suction opening is formed in the accommodating groove and communicated with the dust collecting box and the dust suction fan, so that dust and garbage on the ground are stirred up when the middle sweeping brush rotates, and the dust and the garbage are sucked into the dust collecting box from the dust suction opening by utilizing suction force generated by the dust suction fan.

Referring to fig. 1, fig. 1 shows a bottom perspective view of a cleaning robot 200. The body 230 of the cleaning robot 200 is provided with a water guide member 210 at the bottom, the water guide member 210 is provided with a branch passage, and the cleaning robot 200 is further provided with a water pumping device communicated with the water guide member 210, and the water pumping device pumps the liquid in the water tank 400 to the water guide member 210. The diverging passages diverge the liquid flowing into the water guide 210 to various regions of the water guide 210 to ensure that the cleaning robot 200 can sufficiently wet the whole mop in working process.

A fan is installed inside the cleaning robot 200. The area indicated by F in fig. 1 is an installation area, and the body of the cleaning robot 200 is provided with a bearing structure corresponding to the installation area, and the bearing structure can bear the fans arranged in the installation area. It should be noted that the supporting structure is not necessarily disposed in the middle of the cleaning robot 200, but may be disposed beside the cleaning robot. In addition, the installation area is not limited to the installation of the fan, and other structures in the body of the cleaning robot 200 may be installed. Due to the large space occupation of the bearing structure, the water tank 400 needs to be improved in cooperation with the structure of the body 230 of the cleaning robot 200. The cleaning robot 200 body is further provided with a splicing groove at least partially surrounding the carrying structure, and the water tank 400 is detachably mounted in the splicing groove, as indicated by S in the figure.

Referring specifically to fig. 2, fig. 2 is a schematic diagram illustrating an implementation structure of a water tank 400. The structure of the water tank 400 may be an integral structure or a separate structure. For example, the water tank 400 includes a bottom plate 401 and a housing 402 (as shown in fig. 5), the bottom plate 401 and the housing 402 enclose the water tank 400, and a water storage cavity is formed inside the water tank 400. As shown in fig. 2 or 4b, the water tank 400 includes a spliced side P to be assembled with the body of the cleaning robot 200, and a side surface C corresponding to the spliced side P, and the remaining two sides correspond to the up-down direction of the cleaning robot 200. In order to avoid the bearing structure of the cleaning robot 200, the splicing side P of the water tank 400 is provided with a relief region R recessed toward the inside of the water tank 400, and when the water tank 400 is mounted on the body of the cleaning robot 200, the splicing side P of the water tank 400 is spliced with the body 230 of the cleaning robot 200, and the relief region R receives the bearing structure of the body 230 of the cleaning robot 200. Preferably, the side surface C of the water tank 400 is smoothly transited to the side surface of the body 230 of the cleaning robot 200, which is understood as a continuation between the side surface of the body of the cleaning robot 200 and the side surface C of the water tank 400, so that the overall structure is more compact and aesthetic. In addition, the side surface C of the water tank 400 is provided with an arc shape, and thus is more integrated with the body 230 of the cleaning robot 200.

The position of the abdicating area R is arranged corresponding to the bearing structure of the cleaning robot 200, when the bearing structure is arranged at the middle part of the body 230 of the cleaning robot 200, the abdicating area R is correspondingly and concavely arranged at the middle part of the water tank 400, and when the bearing structure is arranged at the side of the body of the cleaning robot 200, the abdicating area R is correspondingly and concavely arranged at the side of the water tank 400. In addition, the periphery of the recess of the abdicating area R can be a continuous wall surface, or the top of the abdicating area R is penetrated through to be opened, or the bottom of the abdicating area R is penetrated through to be opened. In fig. 2, the top of the abdicating area R is shown to be open.

Referring to fig. 2, the water tank 400 is further provided with a water filling opening, the water filling opening is sealed by a rubber plug 410, and a user can fill water into the water tank 400 after removing the rubber plug 410. The water tank 400 is further provided with a water outlet valve 420, and the water pumping device of the cleaning robot 200 is connected to the water outlet valve 420 to pump the liquid in the water tank 400. The water pumping device comprises a water pumping pipe 220 and a water pump (such as a peristaltic pump), the water outlet valve 420 is provided with a water outlet pipe 220, the water pumping pipe 220 of the water pumping device is inserted into the water outlet pipe 220 of the water outlet valve 420, and the water outlet valve 420 is triggered to open. To improve the sealing between the outlet valve 420 and the suction tube 220, a sealing member may be connected to the outlet valve. For example, a sealing plug is sleeved on the periphery of the pumping tube 220, and when the pumping tube 220 is inserted into the outlet pipe 220 of the outlet valve 420, the sealing plug is in interference fit in the outlet pipe 220. In addition, the cooperation between the pumping tube 220 and the outlet valve 420 may improve the stability and firmness of the water tank 400 mounted on the body of the cleaning robot 200.

Referring to fig. 2 and 3, the receding area R is configured such that the water tank 400 is roughly divided into three areas, including a middle area N having a narrower middle portion and side areas M having wider sides. Correspondingly, the water storage cavity in the water tank 400 is formed with two main water storage cavities 430 located at two opposite sides of the abdicating area R, and an auxiliary water storage cavity 440 corresponding to the abdicating area R and communicating with the two main water storage cavities 400. The water storage spaces of the main water storage cavities 430 on both sides are larger than the water storage space of the auxiliary water storage cavity 440, so that the water tank 400 with the structure can ensure the sufficient water storage capacity of the water tank 400 and also has the abdicating effect on the premise of containing the two large-volume main water storage cavities 430.

Further, referring to fig. 4a and 4b, fig. 4b is a sectional view of the water tank 400 of fig. 4a taken along line I-I, the secondary water storage chamber 440 includes a longitudinal water storage space 441 and a transverse water storage space 442, the longitudinal water storage space 441 is adjacent to a side portion of the abdicating area R, the transverse water storage space 442 is adjacent to a bottom portion of the abdicating area R, and a cross-sectional width of the longitudinal water storage space 441 is greater than a cross-sectional width of the transverse water storage space 442. It is easy to understand, because bearing structure's height dimension is great, and the regional R that gives way also needs to set up great height dimension, and the bottom of the regional R that gives way contacts bearing structure's bottom, if set up the cross-sectional width of horizontal water storage space 442 great, then the height dimension of water tank 400 will further increase, leads to cleaning machines people 200's whole height to increase, just horizontal water storage space 442 is too big leads to easily the intensity of water tank 400 bottom is not enough, easily overwhelms the barrier and damages. However, if the horizontal water storage space 442 is not provided below the escape region R, the water capacity of the water tank 400 is relatively decreased. Meanwhile, for the longitudinal water storage space 441, the height of the water tank 400 does not need to be occupied, and the problem that the longitudinal water storage space is easily damaged does not exist, so that the cross section width of the transverse water storage space 442 is set to be small, and the cross section width of the longitudinal water storage space 441 is set to be large to compensate, and the water storage capacity of the water tank 400 is improved to the maximum extent.

The formation of the lateral water storage space 442 will be described below. In one embodiment, the water tank 400 includes a bottom plate 401 and a housing 402, as shown in fig. 5, the housing 402 is mounted on the bottom plate 401 to form a water storage cavity of the water tank 400 with the bottom plate 401. Wherein, the bottom plate 401 may be a flat plate; or the bottom plate 401 comprises a flat plate and a surrounding plate surrounding the flat plate, and a water storage space positioned above the flat plate is formed between the flat plate and the surrounding plate; or the bottom plate 401 is a flat plate, and a water storage space is formed by the concave upper surface of the flat plate; further alternatively, the bottom plate 401 includes a flat plate and a structural member disposed around the flat plate, and the flat plate and the structural member enclose a water storage space located above the flat plate. When the bottom plate 401 is a flat plate, the horizontal water storage space 442 is defined by the housing 402 mounted on the bottom plate 401, and when the bottom plate 401 has a water storage space, the horizontal water storage space 442 is partially or entirely formed by the water storage space.

Referring to fig. 4c, the bottom plate 401 has a lowest water level area Q corresponding to the receding area R₁And the lowest water level region Q₁Adjoining inclined flow-guiding regions Q₂The water tank 400 includes a lowest water level region Q provided at the bottom plate 401₁Lead of (2)A water mechanism 450. The water diversion mechanism 450 is in communication with the outlet valve 420 via a conduit, and the water diversion mechanism 450 directs water to the outlet valve 420. Further, the lowest water level area Q₁With the yielding area R is arranged just opposite to the yielding area R, and in order to improve the water collecting effect, the lowest water level area Q is arranged₁Is provided with a water level area Q corresponding to the lowest water level area₁Adjoining inclined flow-guiding regions Q₂Said inclined flow guiding area Q₂For guiding water of the two main water storage chambers 430 and the auxiliary water storage chamber 440 to the lowest water level region Q₁Thereby improving the water collecting effect of the water guide mechanism 450.

Referring to fig. 3, an orthographic area of the auxiliary water storage chamber 440 in the horizontal direction is larger than an orthographic area of the main water storage chamber 430 in the horizontal direction. Under the premise of ensuring the strength of the water tank 400, the water collecting area of the main water storage cavity 430 is set to be larger, and the water collecting space is improved.

In another embodiment, the horizontal widths of the two main water storage chambers 430 are gradually decreased toward the sub water storage chamber 440. Among them, the horizontal width may be a width of the water tank 400 in a length direction in a horizontal projection, or may be a width of the water tank 400 in a width direction in a horizontal projection. Specifically, for example, the horizontal width is the length direction of the water tank 400 in the horizontal projection for explanation, please continue to refer to fig. 3, the main water storage cavity 430 has a width L in the horizontal direction, and after the abdicating area R is set, the horizontal width of the main water storage cavity 430 gradually decreases toward the direction close to the auxiliary water storage cavity 440. This setting has realized that the regional R of stepping down has great volume, is favorable to holding great bulky bearing structure to realize the reasonable collocation of the body 230 of water tank 400 and cleaning machines people 200, still effectively guaranteed that water tank 400 has enough big water storage space.

In another embodiment, referring to fig. 6, the relief region R has a bottom wall a disposed adjacent to the bottom of the water tank 400, and a side wall b connected to the bottom wall a and extending away from the bottom of the water tank 400. The connection between the bottom wall a and the side wall b is rounded to make a contact surface between the two more conformable when the water tank 400 is coupled with the cleaning robot 200. In addition, the smooth and excessive corner is easier to demould when the product is produced.

Further, in order to improve the supporting strength of the bottom wall a, it is preferable that a support member Z is provided below the bottom wall a, one end of the support member Z is connected to the bottom wall a, and the other end is supported at the bottom of the water tank 400. It can be understood that, under the setting of support piece Z, support diapire a, improved diapire a's bearing capacity, avoid diapire a when collision or bearing, produce the problem of damage easily.

The arrangement manner of the installation reinforcement 460, and the installation position are not particularly limited. For example, the mounting reinforcement 460 may be a mounting rib, a mounting bar, a mounting buckle, or more. The installation reinforcement 460 may be provided at any position on the water tank 400, preferably near the upper portion of the water tank 400. In the present application, referring to fig. 6 and 7, the mounting reinforcement 460 is provided as a reinforcing rib extending in a direction to match a moving direction of the water tank 400 when it is mounted to the cleaning robot 200. The strengthening rib is located the upper portion of water tank 400, and after cleaning machines people 200 were installed to water tank 400, the strengthening rib still played the firm effect to the upper portion of water tank 400 when can play the fixed action to water tank 400, prevented that cleaning machines people 200 from at the during operation, water tank 400 because the installation is insecure and the problem that appears rocking.

Further, space can be saved while the setting of the abdicating area R is not affected, so it is preferable to provide a recess 470 at the sidewall of the abdicating area R, the recess 470 being close to the splicing side P of the water tank 400 and penetrating out of the splicing side of the water tank 400, and the installation reinforcement 460 being provided in the recess 470. Preferably, the recess 470 is formed on both sides of the abdicating region R, and the mounting reinforcement 460 is disposed in both the recesses 470.

Referring to fig. 6, in order to facilitate the installation and cooperation between the water tank 400 and the cleaning robot 200, a guide mounting block 480 is disposed on the splicing side P of the water tank 400, and the guide mounting block 480 guides the installation of the water tank 400. The guide mounting block 480 plays a role in guiding, and after the water tank 400 is mounted to the body of the cleaning robot 200, the guide mounting block 480 is correspondingly fixed in the mounting groove of the body 230 of the cleaning robot 200, thereby playing a role in preventing shaking. In the present application, a plurality of guide mounting blocks 480, such as 2, 4, 6 or more, are preferably provided. Fig. 1 shows a schematic view of an embodiment of providing 2 guide mounting blocks 480, where the two guide mounting blocks 480 are respectively located at two sides of the abdicating area R, and the two guide mounting blocks 480 are symmetrically distributed.

Further, in order to facilitate the assembly of the guide mounting block 480 and the installation of the water tank 400, it is preferable to provide that the cross-sectional area of the guide mounting block 480 is gradually reduced in a direction away from the splicing side P of the water tank 400. For example, the guide mounting block 480 may be generally trapezoidal in configuration, or triangular in configuration, or semi-elliptical in configuration.

In the disclosed water tank 400 of this application technical scheme, the regional R of stepping down of the sunken middle part of water tank 400 of concatenation side P of water tank 400, should step down regional R and can step down cleaning machines people 200's structure, avoid causing the influence to cleaning machines people 200's structure. Secondly, the structure beside the abdicating area R of the water tank 400 has a water storage cavity with a larger volume, thereby ensuring the water storage function of the water tank 400. In addition, after the water tank 400 is mounted to the cleaning robot 200, the side surfaces C of both ends of the spliced side P of the water tank 400 are smoothly transited to the side surface of the body 230 of the cleaning robot 200, so that the overall structure of the water tank 400 and the body 230 is more integrated, compact and beautiful.

The above only is the preferred embodiment of the present invention, not limiting the scope of the present invention, all the equivalent structure changes made by the contents of the specification and the drawings under the inventive concept of the present invention, or the direct/indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims (17)

1. The utility model provides a water tank, is applied to cleaning machines people, the inside of water tank is formed with the water storage chamber, a serial communication port, the water tank has the concatenation side, the concatenation side is provided with the orientation the inside sunken region of stepping down of water tank, the concatenation side of water tank is used for the body concatenation with cleaning machines people, the region of stepping down is used for holding the partial structure of cleaning machines people's body.

2. The tank of claim 1, wherein a top of the relief area is open.

3. The water tank as claimed in claim 2, wherein the water storage cavity of the water tank is formed with two main water storage cavities located at opposite sides of the abdicating area, and an auxiliary water storage cavity arranged corresponding to the abdicating area and communicating the two main water storage cavities;

the water storage space of the two main water storage cavities is larger than that of the auxiliary water storage cavity.

4. The water tank of claim 3, wherein the secondary water storage chamber comprises a longitudinal water storage space and a transverse water storage space, the longitudinal water storage space is adjacent to the side portion of the abdicating area, the transverse water storage space is adjacent to the bottom portion of the abdicating area, and the cross-sectional area of the longitudinal water storage space is larger than that of the transverse water storage space.

5. The water tank as claimed in claim 3, wherein horizontal widths of both of the main water storage chambers are gradually reduced toward a direction approaching the sub water storage chamber.

6. The water tank as claimed in claim 3, wherein an orthographic area of the auxiliary water storage chamber in a horizontal direction is larger than an orthographic area of the main water storage chamber in a horizontal direction.

7. The tank of claim 2, wherein the relief area has a bottom wall disposed adjacent the bottom of the tank and a side wall extending from the bottom wall away from the bottom of the tank, the connection between the bottom wall and the side wall being rounded.

8. The water tank as claimed in claim 7, wherein a support member is connected below the bottom wall, the support member being supported at the bottom of the water tank.

9. The water tank as claimed in claim 7, wherein a recess is provided in the side wall adjacent to the mating side, the recess being provided through the mating side of the water tank, and wherein a mounting reinforcement is provided in the recess.

10. The water tank as claimed in any one of claims 1 to 9, wherein the splicing side of the water tank is further provided with a guide mounting block for guiding the water tank into splicing engagement with the body of a cleaning robot.

11. The water tank as claimed in claim 10, wherein the guide mounting blocks are provided at both sides of the receding area and are symmetrically distributed.

12. The water tank as claimed in claim 10, wherein the cross-sectional area of the mounting block is gradually reduced in a direction away from the spliced side of the water tank.

13. The water tank as claimed in any one of claims 1 to 9, wherein the water tank comprises a base plate and a housing, the housing is mounted on the base plate, and the relief area is formed by partially recessing the housing.

14. The water tank as claimed in claim 13, wherein a water storage space is formed above the bottom plate, and the water storage space of the bottom plate and the shell cavity of the housing enclose a water storage cavity of the water tank.

15. The tank of claim 14, wherein the floor has a minimum water level area corresponding to the abdicating area and an inclined flow guide area adjacent to the minimum water level area, the tank including a water guide mechanism disposed at the minimum water level area of the floor.

16. A cleaning robot comprising a body and a water tank as claimed in any one of claims 1 to 15, the water tank being spliceable to the body of the cleaning robot.

17. The cleaning robot of claim 16, further comprising a floor mopping assembly, a water pumping device, and a water diversion member;

the mopping assembly is detachably connected to the bottom of the water tank;

the pumping device may pump the liquid within the water storage chamber to a water diversion member that diverts the liquid to a plurality of regions on the floor assembly.

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