Water tank assembly and cleaning robot having the same

Abstract

The application provides a water tank assembly arranged on a chassis assembly of a cleaning robot, comprising: a sewage tank, a sewage inlet and an air inlet being arranged in the sewage tank, a first sewage outlet being arranged at the bottom of the sewage tank, an opening being arranged at the top of the sewage tank, and a cover being reversibly arranged on the opening; a clean water tank being integrally arranged with the sewage tank, the clean water tank being arranged outside the sewage tank, and the axes of the sewage tank and the clean water tank being staggered or coincided in the front-rear direction of the water tank assembly, the clean water tank being reversibly arranged on the chassis assembly, and the sewage tank and the clean water tank being symmetrically arranged about the planes where the axes are located. The water tank assembly provided by the application is convenient to maintain, has a large volume, and has a small degree of change of the center of gravity during the change of the water volume of the clean water tank and the sewage tank. The application also provides a cleaning robot.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of cleaning, and more particularly relates to a water tank assembly and a cleaning robot having the same. BACKGROUND

[0002] In the cleaning robot, a sewage tank and a clean water tank are generally provided. In the related art application, the clean water tank and the sewage tank are independently provided, and are generally arranged in a left-right or front-rear manner. In this arrangement, during the operation of the cleaning robot, as the clean water is consumed and the sewage is accumulated, the water level difference between the clean water tank and the sewage tank will become larger and larger, and the mass difference between the two will also become larger and larger. At this time, the center of gravity of the cleaning robot is located at the position of the sewage tank, that is, the center of gravity of the cleaning robot changes, which may affect the driving stability of the cleaning robot.

[0003] In addition, due to the independent arrangement of the clean water tank and the sewage tank, when assembled on the cleaning robot, a gap is required between the clean water tank and the sewage tank and the side wall of the cleaning robot for the installation of components such as power supply and industrial control device. Therefore, the clean water tank and the sewage tank cannot be completely attached to the side wall of the robot, thus limiting the capacity of the clean water tank and the sewage tank, and the capacity of the clean water tank and the sewage tank cannot meet the demand of maximum water volume for a single cleaning task. In a single cleaning task, the clean water tank may be low in water level or the sewage tank may be high in water level, which may cause the cleaning robot to interrupt the current cleaning task and return to the work station for sewage discharge or water filling operation, thereby greatly affecting the cleaning efficiency. SUMMARY

[0004] The purpose of the embodiments of the present application is to provide a water tank assembly to solve the technical problems of low capacity of the water tank assembly and easy to cause the cleaning robot to drive unstably in the prior art. The present application also provides a cleaning robot.

[0005] To achieve the above-mentioned purpose, the technical scheme adopted by the present application is to provide a water tank assembly arranged on a chassis assembly of a cleaning robot, comprising:

[0006] a sewage tank, a clean water tank, and a sewage inlet and an air inlet are arranged in the sewage tank, a first sewage discharge port is arranged at the bottom of the sewage tank, an opening is arranged at the top of the sewage tank, and a cover is reversibly arranged on the opening;

[0007] the clean water tank is integrally formed with the sewage tank, the clean water tank is arranged outside the sewage tank, and the axis of the sewage tank and the clean water tank is staggered or coincided in the front-rear direction of the water tank assembly, and the clean water tank is reversibly arranged on the chassis assembly;

[0008] the sewage tank and the clean water tank are symmetrically arranged about the plane where the axis is located.

[0009] Optionally, the clean water tank is arranged outside the sewage tank in a semi-enclosing structure; an installation cavity is formed between the opening of the semi-enclosing structure of the clean water tank and the sewage tank, and / or the bottom of the sewage tank is higher than the bottom of the clean water tank.

[0010] Optionally, the volume of the clean water tank on the left and right sides of the sewage tank is greater than the volume of the clean water tank in the front and rear directions of the sewage tank.

[0011] Optionally, the filter cover assembly is detachably arranged at the sewage inlet; the filter cover assembly comprises a filter cartridge in communication with the sewage inlet and a splash-proof cover arranged outside the filter cartridge, the filter cartridge is used for filtering solid impurities in the sewage flowing into the sewage tank, and the splash-proof cover is used for preventing the sewage flowing into the sewage tank from splashing on the inner side wall of the sewage tank.

[0012] Optionally, a first shielding plate is arranged along the circumference of the opening, and a second shielding plate is arranged on the side of the cover body facing the opening, the first shielding plate and the second shielding plate are arranged at the same height; in the closed state of the cover body, the first shielding plate and the second shielding plate are opposite or abut against each other, and the first shielding plate and the second shielding plate are both parallel to the depth direction of the sewage tank.

[0013] Optionally, a water level sensor for detecting a predetermined liquid level is arranged in the sewage tank and the clean water tank; and / or two liquid level display tubes are arranged outside the water tank assembly and in communication with the bottom of the sewage tank and the clean water tank, respectively.

[0014] Optionally, a second sewage outlet is arranged at the bottom of the sewage tank, the liquid level display tube in communication with the sewage tank is a flexible tube and is in communication with the second sewage outlet, and the liquid level display tube in communication with the sewage tank is hung on the outer side wall of the water tank assembly.

[0015] Optionally, the bottom of the sewage tank is arranged in an inclined manner, and the first sewage outlet is arranged at the bottom end of the bottom of the sewage tank.

[0016] Optionally, a water entry prevention device is arranged inside the sewage tank and at the air suction port; the water entry prevention device comprises a cover cylinder for covering the air suction port and a float ball arranged inside the cover cylinder, the diameter of the float ball is greater than the diameter of the air suction port, and the float ball is used for blocking the air suction port.

[0017] Optionally, a self-cleaning device is further included; the self-cleaning device comprises a clean water pipeline, a water pump and a spray head, two ends of the clean water pipeline are respectively communicated with the spray head and the clean water tank, the spray head is arranged in the sewage tank, and the water pump is arranged on the clean water pipeline to pump clean water in the clean water tank to the spray head.

[0018] Correspondingly, the application further provides a cleaning robot, comprising a chassis assembly and the water tank assembly as described above, a bottom side of the clean water tank is rotationally arranged on the chassis assembly, and a control panel is arranged on an outer sidewall of the clean water tank.

[0019] Optionally, a supporting rod assembly is connected between the chassis assembly and the water tank assembly; the supporting rod assembly comprises a first sliding rod and a second sliding rod which are slidably arranged relative to each other, and a fall-preventing device is arranged between the first sliding rod and the second sliding rod to prevent the first sliding rod and the second sliding rod from relatively sliding.

[0020] Optionally, the fall-preventing device comprises a lock catch assembly arranged on the first sliding rod and at least one positioning slot arranged on the second sliding rod, and the lock catch assembly is used to be inserted and buckled in the positioning slot.

[0021] Optionally, a magnetic induction assembly is arranged between the chassis assembly and the water tank assembly, and the magnetic induction assembly is electrically connected with a control module of the cleaning robot.

[0022] The water tank assembly provided by the application has at least the following beneficial effects:

[0023] The clean water tank is reversibly arranged, so that when the clean water tank is reversed during maintenance, the sewage tank can be reversed together with the clean water tank, the opening on the sewage tank can face the cleaning personnel, the dead angle during cleaning is reduced, and thus the cleaning of the inside of the sewage tank is facilitated, and the maintenance is also facilitated.

[0024] In addition, the clean water tank and the sewage tank are integrally arranged, the assembly gap between the clean water tank and the sewage tank can be avoided, and the assembly position can be reduced, so that the volume of the clean water tank 100 and the sewage tank can be greatly increased in the same space.

[0025] Further, the clean water tank is arranged outside the sewage tank, and the sewage tank and the clean water tank are symmetrically arranged about the plane where the axes are located, and the respective axes of the sewage tank and the clean water tank are staggered or coincided in the front-rear direction of the water tank assembly, so that the change of the center of gravity of the water tank assembly of the cleaning robot during the cleaning operation can be reduced, and thus the stability of the movement of the cleaning robot can be improved.

[0026] Correspondingly, the cleaning robot provided in this application is equipped with the aforementioned water tank, which gives it the same advantages as the aforementioned water tank. That is, the cleaning robot is simple and convenient to maintain, and can also effectively reduce the cleaning dead corners in the water tank assembly. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a front view of the water tank in some embodiments of this application;

[0029] Figure 2 This is a perspective view of the water tank in some embodiments of this application;

[0030] Figure 3 This is a perspective view of the self-cleaning device in some embodiments of this application;

[0031] Figure 4 This is an exploded view of the filter cover assembly in some embodiments of this application;

[0032] Figure 5 This is an assembly diagram of the water-proof device in some embodiments of this application;

[0033] Figure 6 The diagram illustrates the first and second shields in some embodiments of this application.

[0034] Figure 7 for Figure 6 Cross-sectional view of the water tank assembly with the cover closed;

[0035] Figure 8 This is a perspective view of the water tank from another angle in some embodiments of this application;

[0036] Figure 9 This is a cross-sectional view showing the internal structure of the water tank assembly in some embodiments of this application;

[0037] Figure 10 This is a perspective view of the cleaning robot in some embodiments of this application;

[0038] Figure 11 for Figure 10 Cross-sectional view of the middle strut assembly;

[0039] Figure 12 for Figure 10 Enlarged view of point A in the middle.

[0040] In the drawings, reference numerals:

[0041] 100, clean water tank; 110, clean water level display tube;

[0042] 200, sewage tank;

[0043] 211, first sewage outlet; 212, second sewage outlet;

[0044] 220, first shielding plate; 230, sewage level display tube;

[0045] 300, cover; 310, second shielding plate;

[0046] 400, filter cover assembly;

[0047] 410, filter cartridge; 420, splash-proof cover; 421, clamping block; 430, clamping frame; 431, clamping groove;

[0048] 500, self-cleaning device;

[0049] 510, clean water pipeline; 520, water pump; 530, spray head; 540, filtering device;

[0050] 600, water entry prevention device;

[0051] 610, cover cylinder; 620, floating ball;

[0052] 700, support rod assembly;

[0053] 711, first sliding rod; 7111, sliding groove; 712, second sliding rod; 7121, sliding block;

[0054] 720, lock catch assembly; 721, lock block; 722, pull ring; 730, nitrogen gas spring;

[0055] 800, fan;

[0056] 910, lock frame; 920, magnetic induction assembly. DETAILED DESCRIPTION

[0057] In order to make the technical problems, technical solutions and beneficial effects to be solved in the present application more clear and obvious, the present application will be further described in detail below in combination with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0058] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0059] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0060] In addition, the terms "first", "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0061] Please refer to Figures 1 to 12 , now the water tank assembly provided by the embodiments of the present application will be described.

[0062] The water tank assembly is arranged on the chassis assembly of the cleaning robot, which comprises a clean water tank 100 and a sewage tank 200. It should be understood that the sewage tank 200 and the clean water tank 100 are arranged on the chassis assembly of the cleaning robot.

[0063] Referring to Figure 2 and Figure 9 , the sewage tank 200 is provided with a sewage inlet and an air inlet, a first sewage outlet 211 is arranged at the bottom of the sewage tank 200, an opening is arranged at the top of the sewage tank 200, and a cover 300 is arranged at the opening. Specifically, the automatic sewage valve is arranged at the first sewage outlet 211; the sewage inlet and the air inlet are arranged at the top of one of the inner side walls of the sewage tank 200, so that the sewage inlet and the air inlet are located at a high position in the sewage tank 200, that is, the distance between the sewage inlet and the air inlet and the liquid surface in the sewage tank 200 is large, and the suction capacity can be maintained when the liquid level in the sewage tank 200 is high.

[0064] At the same time, referring to Figure 10, the sewage tank 200 and the clean water tank 100 are integrally arranged. By such arrangement, firstly, the strength of the water tank assembly is higher and the precision is better, so as to improve the assembly quality and reduce the assembly difficulty, thereby improving the yield of the cleaning robot after assembly; secondly, the assembly gap between the sewage tank 200 and the clean water tank 100 can be avoided, and the setting of the assembly position can be reduced, so that the volume of the clean water tank 100 and the sewage tank 200 can be greatly increased in the same space, thereby reducing the number of water adding or sewage discharging of the cleaning robot during the cleaning operation.

[0065] Further, the clean water tank 100 can be reversely arranged on the chassis assembly. Specifically, the sewage tank 200 and the clean water tank 100 can be reversely arranged on the frame of the cleaning robot. By such arrangement of the water tank assembly, the sewage tank 200 can be reversed relative to the chassis assembly after the cleaning operation of the cleaning robot, so that the top opening of the sewage tank 200 is directly opposite the cleaning and maintenance personnel, thereby facilitating the cleaning and maintenance of the inside of the sewage tank 200, reducing the cleaning dead angle, and improving the sanitary condition of the inside of the sewage tank 200.

[0066] Further, the clean water tank 100 is arranged outside the sewage tank 200, for example, the clean water tank 100 can be arranged outside the sewage tank 200 in a U-shaped semi-enclosed structure, or in a back-to-back shape.

[0067] By such arrangement, during the cleaning operation of the cleaning robot, even if the water level difference between the clean water tank 100 and the sewage tank 200 is large, compared with the arrangement mode that the sewage tank 200 and the clean water tank 100 are arranged in front of and behind each other or left and right of each other in the conventional arrangement, the center of gravity of the water tank assembly changes little before and after the cleaning operation, that is, the center of gravity of the cleaning robot changes little during the cleaning operation, so that the cleaning robot will not move unstably due to the large change of the center of gravity, thereby improving the moving stability of the cleaning robot.

[0068] Meanwhile, on the basis of the above arrangement, it should be noted that the axes of the clean water tank 100 and the sewage tank 200 are staggered or coincided in the front-rear direction of the water tank assembly. That is, the axes of the clean water tank 100 and the sewage tank 200 are arranged in front of and behind each other; or the axes of the clean water tank 100 and the sewage tank 200 are coincided.

[0069] The axes of the clean water tank 100 and the sewage tank 200 are staggered or coincided in the front-rear direction of the water tank assembly, which is determined by the size of the volume of the clean water tank 100 and the sewage tank 200, and the specific arrangement can be slightly changed according to actual needs to minimize the change of the center of gravity of the water tank assembly during the water level change.

[0070] Specifically, in the case of the axes being staggered, by arranging the axes of the fresh water tank 100 and the sewage tank 200 in the front-rear direction of the water tank assembly, a mounting space for assembling the fan 800 and other components can be formed inside the water tank assembly (i.e. in the area enclosed by the outline of the fresh water tank 100), and the structures on the cleaning robot are compactly assembled when the water tank assembly is assembled on the chassis assembly of the cleaning robot, thereby improving the space utilization in a certain volume space, for example, increasing the volume of the water tank assembly, thereby reducing the number of times of sewage discharge and water filling of the cleaning robot during the cleaning process.

[0071] In the case of the axes being coincident, the center of gravity of the fresh water tank 100 and the sewage tank 200 does not change regardless of the water level in the fresh water tank 100 and the sewage tank 200, thereby facilitating the stability of the center of gravity and improving the stability of the movement of the cleaning robot.

[0072] Meanwhile, the sewage tank 200 and the fresh water tank 100 are symmetrically arranged about the plane in which the axes are located, so that the center of gravity of the water tank assembly is always located on the plane in which the axes are located during the cleaning operation of the cleaning robot, and does not deviate to the left or right, thereby facilitating the stability of the center of gravity and improving the stability of the movement of the cleaning robot.

[0073] In summary, the water tank assembly of the present application can have as large a capacity as possible for the fresh water tank 100 and the sewage tank 200, thereby reducing the number of times of water filling and sewage discharge of the cleaning robot during the cleaning operation; at the same time, when the water level difference between the fresh water tank 100 and the sewage tank 200 gradually increases, the influence of the change of the center of gravity of the water tank assembly on the stability of the movement of the cleaning robot can be reduced, thereby effectively ensuring the stability of the movement of the cleaning robot.

[0074] Further, referring to Figures 6 to 9 the fresh water tank 100 is arranged outside the sewage tank 200 in a semi-enclosed structure; and a mounting cavity is formed between the opening of the semi-enclosed structure of the fresh water tank 100 and the sewage tank 200. In this way, the mounting cavity can be used to mount the fan 800 and other related components, so that the related components do not exceed the two side ends of the semi-enclosed structure of the fresh water tank 100 after being mounted on the water tank assembly.

[0075] Meanwhile, referring to Figures 6 to 10, the bottom of the sewage tank 200 is higher than the bottom of the clean water tank 100. In this way, an avoiding space is also formed between the bottom of the clean water tank 100 and the bottom of the sewage tank 200, for avoiding the battery module, the control module and other related structural modules installed on the chassis assembly of the cleaning robot. In this way, when the water tank assembly is assembled on the chassis assembly, the gap between the water tank assembly and the chassis assembly is small, so that the space can be fully utilized, so that the volume of the water tank assembly can be further expanded within the certain volume limit of the cleaning robot.

[0076] With reference to Figures 7 to 9 , the volume of the clean water tank 100 on the left and right sides of the sewage tank 200 is greater than the volume of the clean water tank 100 in the front and rear directions of the sewage tank 200. In this way, during the cleaning operation of the cleaning robot, even if the water in the front and rear directions of the clean water tank 100 is exhausted, a certain amount of water is still left in the left and right sides of the clean water tank 100, so that the speed of the center of gravity of the clean water tank 100 can be reduced during the entire cleaning operation, thereby facilitating the stability of the movement of the cleaning robot.

[0077] Further, with reference to Figures 1 to 3 A self-cleaning device 500 is arranged between the sewage tank 200 and the clean water tank 100. The self-cleaning device 500 includes a clean water pipeline 510, a water pump 520 and a spray head 530, two ends of the clean water pipeline 510 are respectively connected to the spray head 530 and the clean water tank 100, the spray head 530 is arranged in the sewage tank 200, and the water pump 520 is arranged on the clean water pipeline 510 to pump the clean water in the clean water tank 100 to the spray head 530.

[0078] Specifically, the spray head 530 can have the following several arrangement modes:

[0079] In some arrangement modes, the spray head 530 can be a single spray head 530 arranged on the inner side wall of the sewage tank 200; or in other arrangement modes, the spray head 530 can also be arranged in two or more, each spray head 530 is arranged at a certain distance, and each spray head 530 sprays high-pressure mist clean water in a certain fixed direction in the sewage tank 200; or the spray head 530 can also be arranged in the form of a return pipe, the return pipe is arranged around the opening of the sewage tank 200, and a plurality of water outlets are arranged on the side of the return pipe facing the inner side wall of the sewage tank 200. In this way, when the water pump 520 is started, the spray head 530 can simultaneously spray high-pressure mist clean water to each inner side wall of the sewage tank 200, thereby improving the cleaning efficiency.

[0080] Further, the self-cleaning device 500 further comprises a filtering device 540, which is arranged on the clean water pipeline 510. Specifically, the filtering device 540 can be arranged between the inlet of the clean water pipeline 510 and the water pump 520, or arranged between the water pump 520 and the spray head 530.

[0081] It can be understood that since the clean water is generally tap water, the calcium carbonate, magnesium carbonate, calcium sulfate and other impurities naturally contained in the tap water will block the pumping flow channel in the water pump 520 and block the spray head 530 during long-term use, thereby affecting the spray flow. Therefore, the filtering device 540 is arranged on the clean water pipeline 510, which is used to filter the calcium carbonate, magnesium carbonate, calcium sulfate and other impurities in the clean water, so as to ensure that the pumping operation of the water pump 520 can be carried out efficiently and smoothly, and the normal spray flow of the spray head 530 can be ensured, thereby reducing the failure rate and improving the cleaning efficiency.

[0082] Further, referring to Figure 2 and Figure 3 , in the self-cleaning assembly, the spray head 530 is a rotary spray head and is arranged at the top of the internal cavity of the sewage tank 200.

[0083] Firstly, the rotary spray head is driven to rotate by the high-pressure water flow pumped by the water pump 520, so that it can rotate at a certain circumferential speed. In this way, when the high-pressure mist of clean water is sprayed onto the inner side wall of the sewage tank 200 during rotation, the clean water sweeps across the inner side wall of the sewage tank 200 at a certain speed under the action of inertia, thereby playing a washing role. Compared with being sprayed directly onto the inner side wall of the sewage tank 200, this can further improve the cleaning effect.

[0084] Secondly, the rotary spray head is arranged at the top center position of the internal cavity of the sewage tank 200. In this way, the maximum spray height of the spray head 530 is high, so that the cleaning area of the inner side wall of the sewage tank 200 can be increased as much as possible, and the generation of dead angles can be reduced, thereby improving the sanitary condition in the sewage tank 200.

[0085] Since the sewage sucked from the ground often contains dust, hair, and even solid objects with a large area but light weight, such as paper scraps and plastic scraps. When such impurities are sucked into the sewage tank 200, the dust and hair are easy to splash and adhere to the inner side wall of the sewage tank 200 to form dirt, or easy to accumulate and block at the first sewage outlet 211, causing the first sewage outlet 211 to be blocked and affecting the smoothness of sewage; and solid impurities with light weight and large area are easy to be sucked into the fan 800 under the action of negative pressure, and in severe cases, the fan 800 will be blocked, overheated and cause the fan 800 to fail. Based on this, referring to Figure 2 and Figure 4A filter cover assembly 400 is detachably arranged in the sewage tank 200 at the sewage inlet, and is used to filter solid impurities in the sewage flowing into the sewage tank 200. In this way, the filter cover assembly 400 can intercept and filter the impurities flowing out of the sewage inlet. When the filter cover assembly 400 is filled with too many impurities, it can be easily removed and cleaned, so that the relatively large impurities cannot enter the sewage tank 200, thereby affecting the normal operation of the fan 800 and the smoothness of sewage discharge, and also helping to keep the inner side wall of the sewage tank 200 clean.

[0086] It can be understood that, with reference to Figure 2 and Figure 4 In some embodiments of the present application, the filter cover assembly 400 includes a filter cartridge 410 in communication with the sewage inlet, and a splash-proof cover 420 arranged outside the filter cartridge 410, which is used to prevent the sewage flowing into the sewage tank 200 from splashing on the inner side wall of the sewage tank 200.

[0087] It can be understood that the splash-proof cover 420 can be a semi-closed flow guide plate in an arc shape, or can also be a fully closed cover body with an opening at one end, and the opening faces the bottom of the sewage tank 200. By arranging the splash-proof cover 420, the sewage sucked by the negative pressure can be guided when entering the inside of the sewage tank 200, and the sewage flows into the inside of the sewage tank 200 at a certain fixed angle under the guiding action of the splash-proof cover 420, thereby reducing the generation of splashing, further reducing the splashing of impurities, and also reducing the generation of stubborn dirt on the inner side wall of the sewage tank 200, thereby helping to keep the inner side wall of the sewage tank 200 clean and reducing the cleaning difficulty of the inside of the sewage tank 200.

[0088] Further, regarding the assembly mode of the filter cover assembly 400. A clamping frame 430 is fixedly arranged on the inner side wall of the sewage tank 200, and the filter cartridge 410 is inserted into the clamping frame 430 along the depth direction of the sewage tank 200; meanwhile, a clamping groove 431 is arranged on the clamping frame 430, and a clamping block 421 capable of being clamped in the clamping groove 431 is correspondingly arranged on the splash-proof cover 420. In this way, the filter cover assembly 400 is convenient to disassemble and assemble, and is convenient and fast to clean and maintain.

[0089] It should be noted that when the cleaning robot is in a non-working state, and when the sewage tank 200 is subjected to a relatively large external force and shakes greatly, the sewage in the sewage tank 200 will surge under the shaking, and the surging water near the inner side wall of the sewage tank 200 will appear a wall-climbing phenomenon under the action of mechanics, that is, the surging water will climb along the inner side wall of the sewage tank 200 to the top of the sewage tank 200. At this time, the surging water climbing to the top of the inner side wall of the sewage tank 200 will overflow the sewage tank 200 through the gap between the cover body 300 and the opening, resulting in sewage leakage, thereby increasing the cleaning and maintenance difficulty of the water tank assembly.

[0090] To solve this problem, with reference to Figures 6 to 7 In some embodiments of the present application, a first baffle plate 220 is arranged around the opening of the sewage tank 200 in the circumferential direction of the opening, and a second baffle plate 310 is arranged around the side of the cover 300 facing the opening. In the closed state of the cover 300, the first baffle plate 220 and the second baffle plate 310 can be spaced apart or in close contact. It should be understood that if the first baffle plate 220 and the second baffle plate 310 are spaced apart, the distance between them should be less than the height of either one of them.

[0091] When the cover 300 is in the closed state, the edges of the first baffle plate 220 and the second baffle plate 310 are opposite each other, that is, a double-layer barrier structure is formed between the first baffle plate 220 and the second baffle plate 310. When the water waves from different directions hit the first baffle plate 220 and / or the second baffle plate 310, the wall-climbing phenomenon of the water waves on the first baffle plate 220 and the second baffle plate 310 will be greatly alleviated, thereby minimizing the amount of water entering the gap between the opening and the cover 300, and the water leakage effect of the water tank is more ideal at this time.

[0092] It can be understood that the first baffle plate 220 and the second baffle plate 310 can be arranged in parallel with each other; or they can also be arranged in opposite inclination, for example, the inclination directions of the first baffle plate 220 and the second baffle plate 310 are both towards the bottom of the sewage tank 200, and the distance between the respective bottoms (i.e. the side close to the bottom of the sewage tank 200) of the first baffle plate 220 and the second baffle plate 310 is less than the distance between the respective tops (i.e. the side away from the bottom of the sewage tank 200).

[0093] Preferably, the first baffle plate 220 and the second baffle plate 310 are parallel to the depth direction of the sewage tank 200. In this case, the first baffle plate 220 and the second baffle plate 310 have better alleviating ability for the wall-climbing phenomenon of the water waves, thereby avoiding the water waves from flowing to the gap between the cover 300 and the opening and overflowing along the gap.

[0094] In addition, with reference to Figures 6 to 7 As the most preferred solution, the first baffle plate 220 and the second baffle plate 310 are arranged at the same height. In this way, no matter which baffle plate the waves hit, most of the waves will be blocked by the baffle plate and returned to the water surface, that is, in most cases, it is difficult for the waves to flow to the gap between the cover 300 and the tank closure, thereby minimizing the water in the tank from overflowing the tank through the gap between the cover 300 and the tank closure, thereby causing water leakage.

[0095] It can be understood that in some embodiments of the present application, water level sensors (not shown in the figure) for detecting predetermined liquid level are arranged in the sewage tank 200 and the clean water tank 100, wherein the predetermined liquid level can be any liquid level or a water level warning liquid level.

[0096] Specifically, each water level sensor is used to detect any liquid level and is electrically connected with the control module of the cleaning robot, so that the control module can monitor the water level of clean water and sewage in the water tank assembly in real time, thereby determining whether to perform water adding and / or sewage discharging operation to prevent the sewage tank 200 from overflowing or being sucked into the air duct of the fan 800 due to too high sewage liquid level.

[0097] At the same time, referring to Figure 6 , Figure 8 and Figure 9 , two liquid level display tubes respectively communicating with the bottom of the sewage tank 200 and the clean water tank 100 are arranged on the outside of the water tank assembly, that is, the clean water liquid level display tube 110 and the sewage liquid level display tube 230 are arranged. It should be understood that the lowest height position of the sewage liquid level display tube 230 is lower than the second sewage outlet 212, and for the same reason, the lowest height position of the clean water liquid level display tube is lower than the deepest position of the clean water tank 100. In this way, combined with the water level sensors and liquid level display tubes arranged in the clean water tank 100 and the sewage tank 200, the liquid level in the clean water tank 100 and the sewage tank 200 can be double monitored, which can effectively prevent the problem of delayed water level monitoring caused by failure of the water level sensor.

[0098] Further, referring to Figure 8 and Figure 9 , the second sewage outlet 212 is arranged at the bottom of the sewage tank 200, and the liquid level display tube communicating with the sewage tank 200 is a flexible tube and communicates with the second sewage outlet 212. It can be understood that the sewage liquid level display tube 230 can be made of transparent soft material to have good bending performance, and at the same time, the sewage liquid level display tube 230 is hung on the water tank assembly.

[0099] In this way, when manual sewage discharging is needed, the sewage in the sewage tank 200 can be discharged by bending the sewage liquid level display tube 230 to have one end with an opening lower than the second sewage outlet 212; when the liquid level display function is needed, the sewage liquid level display tube 230 can be bent to the vertical state.

[0100] It is further understood that the second sewage outlet 212 is arranged at the bottom of the sewage tank 200 and beside the first sewage outlet 211. In this way, the height positions of the first sewage outlet 211 and the second sewage outlet 212 are consistent, and the sewage in the sewage tank 200 can be completely discharged through the first sewage outlet 211 or the second sewage outlet 212, so as to avoid the bacteria breeding caused by the residual sewage in the sewage tank 200, and finally affect the sanitary condition of the sewage tank 200.

[0101] It is understood that, in order to improve the sewage discharge efficiency of the sewage tank 200, with reference to Figure 9 In some embodiments of the present application, the bottom of the sewage tank 200 is inclined, and the first sewage outlet 211 is arranged at the bottom end of the bottom of the sewage tank 200.

[0102] The arrangement of the bottom of the sewage tank 200 can be various. For example, the bottom of the sewage tank 200 is a inclined plane, or an arc surface, and the first sewage outlet 211 and the second sewage outlet 212 are located at the bottom end of the inclined plane or the arc surface. Alternatively, the bottom of the sewage tank 200 can also be a inclined plane, and a concave surface is arranged on the inclined plane close to the bottom thereof, and the first sewage outlet 211 and the second sewage outlet 212 are located at the bottom end of the concave surface. In this way, the sewage in the sewage tank 200 converges to the bottom end of the sewage tank 200 under the action of gravity, so that the sewage in the sewage tank 200 can be completely discharged from the sewage tank 200, and the sewage discharge efficiency of the sewage tank 200 is high.

[0103] It is understood that, in order to prevent the sewage in the sewage tank 200 from being sucked into the fan 800 along the air inlet to cause the fan 800 to be damaged by water, the air inlet is arranged as follows in the sewage tank 200.

[0104] With reference to Figure 2 and Figure 5 A water entry prevention device 600 is further arranged in the sewage tank 200 at the air inlet, and the water entry prevention device 600 includes a cover cylinder 610 for covering the air inlet and a floating ball 620 arranged in the cover cylinder 610. The diameter of the floating ball 620 is greater than that of the air inlet, and the floating ball 620 is used to block the air inlet. It is understood that the length of the cover cylinder 610 is greater than the inner diameter of the cover cylinder 610, and the floating ball 620 is arranged in the cover cylinder 610 and the diameter thereof is less than the inner diameter of the cover cylinder 610, that is, the floating ball 620 can move in the cover cylinder 610 with small resistance.

[0105] Specifically, before the fan 800 starts, the sewage liquid level in the sewage tank 200 is low, and the float ball 620 is located at the bottom of the cover cylinder 610 under the action of gravity; when the fan 800 starts and generates negative pressure in the sewage tank 200 to suck sewage into the sewage tank 200, the sewage liquid level in the sewage tank 200 gradually rises, and before the sewage liquid level reaches the bottom of the cover cylinder 610, the negative pressure is still difficult to suck up the float ball 620 and block the air inlet due to the distance between the float ball 620 and the air inlet; when the sewage liquid level continues to rise to submerge the bottom of the cover cylinder 610, the sewage liquid level contacts the float ball 620, and the float ball 620 floats on the sewage liquid level under the action of buoyancy; when the sewage liquid level continues to rise to a distance from the air inlet, the float ball 620 is sucked and blocked under the negative pressure, so that the sewage liquid level is prevented from being sucked by the fan 800 when the distance from the air inlet is too close, thereby reducing the failure rate of the fan 800, improving safety in use, and facilitating maintenance.

[0106] Correspondingly, with reference to Figure 10 , the application also provides a cleaning robot, which comprises a chassis assembly and the water tank assembly in any of the above embodiments, wherein one side of the bottom of the clean water tank 100 is rotationally arranged on the chassis assembly, specifically, a rotating part rotationally connected with the chassis assembly is arranged on one side of the bottom of the clean water tank 100; and a control panel is arranged on the outer side wall of the clean water tank 100.

[0107] It should be understood that the control panel is arranged on the outer side wall of the clean water tank 100, and related control auxiliary structures such as handrails are also arranged, that is, the clean water tank 100 is the outer shell of the upper half of the cleaning robot. In this way, the cleaning robot does not need to be provided with an outer shell covering the water tank assembly, and the related mounting structure between the water tank assembly and the outer shell is omitted, so that the volume of the water tank assembly can be increased as much as possible, and the water storage capacity is increased.

[0108] Further, with reference to Figure 10 , a lock piece is arranged at the bottom of the water tank assembly, and a lock rack 910 is arranged on the chassis assembly. In this way, when the water tank assembly is flipped and returned to the original position, the lock piece and the lock rack 910 are mutually buckled and locked, so as to realize the connection and fixation between the water tank assembly and the chassis assembly, and prevent the water tank assembly from being flipped by itself in the case that the water surface in the water tank assembly shakes during operation.

[0109] Meanwhile, with reference to Figure 10 and Figure 12 , in some embodiments of the application, a magnetic induction assembly 920 is arranged between the chassis assembly and the water tank assembly, and the magnetic induction assembly 920 is electrically connected with the control module of the cleaning robot.

[0110] Specifically, the magnetic attraction sensing assembly 920 includes a magnet arranged at the bottom of the water tank assembly and a sensor arranged on the chassis assembly, and the sensor is electrically connected with the control module of the cleaning robot. When the water tank assembly is flipped relative to the chassis assembly, only when the magnetic attraction body at the bottom of the water tank assembly is attached to the sensor, it means that the water tank assembly is returned to the original position. At this time, the sensor transmits an electrical signal to the control module, and the cleaning robot can only perform the next operation after obtaining the electrical signal. In this way, the safety of the cleaning robot is higher.

[0111] Further, with reference to Figure 10 and Figure 11 In some embodiments of the present application, a support rod assembly 700 is connected between the chassis assembly and the water tank assembly. The support rod assembly 700 can be a hydraulic support rod or other types of support rod, which can improve the stability of the water tank assembly during flipping to facilitate cleaning and maintenance personnel work.

[0112] Further, with reference to Figure 11 The support rod assembly 700 includes a first sliding rod 711 and a second sliding rod 712 arranged in sliding relationship with each other. In detail, the cross sections of the first sliding rod 711 and the second sliding rod 712 are both U-shaped, and sliding grooves 7111 are symmetrically formed on the opposite side walls of the first sliding rod 711. The first sliding rod 711 is sleeved in the U-shaped opening of the second sliding rod 712, and a sliding block 7121 is arranged on the second sliding rod 712 for being inserted into the sliding groove 7111. When the water tank assembly is flipped, the second sliding rod 712 slides relative to the first sliding rod 711, and the sliding block 7121 slides in the sliding groove 7111 to play a guiding and limiting role. In this way, the support rod assembly 700 has simple structure, low failure rate and convenient maintenance.

[0113] Further, with reference to Figure 11 A fall prevention device is arranged between the first sliding rod 711 and the second sliding rod 712. By arranging the fall prevention device, the relative sliding of the first sliding rod 711 and the second sliding rod 712 is limited after the water tank assembly is flipped to a certain position, so as to prevent the water tank assembly from suddenly flipping back during maintenance.

[0114] Specifically, the fall prevention device includes a lock catch assembly 720 arranged on the first sliding rod 711 and a positioning groove arranged on the second sliding rod 712. The positioning groove can be arranged only one or multiple in the length extension direction of the second sliding rod 712, and the lock catch assembly 720 is used for being inserted and buckled in the positioning groove.

[0115] More specifically, the lock assembly 720 comprises a seat, a pull ring 722, an elastic member and a lock block 721. The seat is arranged on the first slide rod 711, the lock block 721 is slidingly arranged in the seat and has a side inclined surface facing the base assembly, the elastic member is linked between the lock block 721 and the bottom of the seat, and the pull ring 722 is arranged through the seat and connected with the lock block 721. When the water tank assembly is flipped, when the second slide rod 712 slides relative to the first slide rod 711 to be opposite to the lock block 721, the lock block 721 is inserted into the positioning groove under the elastic force of the elastic member, so as to lock and fix the second slide rod 712 and the first slide rod 711; when it is needed to flip the water tank assembly back, the cleaning and maintenance personnel can pull the pull ring 722 to drive the lock block 721 to be separated from the positioning groove, so as to unlock the positions of the first slide rod 711 and the second slide rod 712. In this way, the lock assembly 720 is convenient and quick to operate and safe to use.

[0116] Further, referring to Figure 10 , the support rod assembly 700 further comprises a nitrogen spring 730, which is arranged in parallel with the first slide rod 711 and / or the second slide rod 712. By arranging the nitrogen spring 730, it can provide assistance when the water tank assembly is flipped open and provide resistance when the water tank assembly is flipped closed, so as to make the flipping of the water tank assembly more relaxed.

[0117] The above only describes the preferred embodiments of the present application and is not used to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A water tank assembly for mounting on the chassis assembly of a cleaning robot, characterized in that, include: A sewage tank is provided with a sewage inlet and an air intake, a first sewage outlet is provided at the bottom of the sewage tank, and an opening and a cover that is flipped onto the opening are provided at the top of the sewage tank. The sewage inlet and the air intake are both located at the top of one of the inner side walls of the sewage tank. A clean water tank is integrally formed with the wastewater tank. The clean water tank surrounds the outside of the wastewater tank. The axes of the wastewater tank and the clean water tank are offset from each other in the front-rear direction of the tank assembly. The clean water tank and the wastewater tank are rotatably mounted on the chassis assembly. Both the wastewater tank and the clean water tank are symmetrically arranged about the plane containing each axis. The clean water tank is semi-enclosed around the sewage tank; an installation cavity is formed between the opening of the semi-enclosed structure of the clean water tank and the sewage tank, and the bottom height of the sewage tank is higher than the bottom height of the clean water tank. The volume of the clean water tank located on the left and right sides of the sewage tank is greater than the volume of the clean water tank located in the front-back direction of the sewage tank.

2. The water tank assembly as described in claim 1, characterized in that: It also includes a filter cover assembly that is detachably installed at the sewage inlet; the filter cover assembly includes a filter cylinder that communicates with the sewage inlet and a splash guard that covers the outside of the filter cylinder. The filter cylinder is used to filter solid impurities in the sewage flowing into the sewage tank, and the splash guard is used to prevent sewage flowing into the sewage tank from splashing onto the inner wall of the sewage tank.

3. The water tank assembly as described in claim 1, characterized in that: A first baffle plate is provided around the opening along the circumference of the opening, and a second baffle plate is provided around the side of the cover facing the opening. The first baffle plate and the second baffle plate are set at the same height. When the cover is closed, the first shield and the second shield are opposite to or abut against each other, and both the first shield and the second shield are parallel to the depth direction of the sewage tank.

4. The water tank assembly as described in claim 1, characterized in that: Both the wastewater tank and the clean water tank are equipped with water level sensors for detecting predetermined liquid level height; and / or, two liquid level display tubes are also provided on the outside of the water tank assembly, which are respectively connected to the bottom of the wastewater tank and the clean water tank.

5. The water tank assembly as described in claim 4, characterized in that: A second drain outlet is provided at the bottom of the sewage tank. The liquid level display tube, which is connected to the sewage tank, is a flexible tube and is connected to the second drain outlet. The liquid level display tube, which is connected to the sewage tank, is hung on the outer wall of the water tank assembly.

6. The water tank assembly as described in claim 1, characterized in that: The bottom of the sewage tank is inclined, and the first sewage outlet is located at the bottommost end of the sewage tank.

7. The water tank assembly as described in claim 1, characterized in that: Inside the sewage tank, at the air intake, a water-proof device is also provided; the water-proof device includes a cover for covering the air intake and a float inside the cover, the diameter of the float being larger than the diameter of the air intake, and the float being used to block the air intake.

8. The water tank assembly as described in claim 1, characterized in that: It also includes a self-cleaning device; the self-cleaning device includes a clean water pipeline, a water pump and a spray head, the two ends of the clean water pipeline are respectively connected to the spray head and the clean water tank, the spray head is set in the wastewater tank, and the water pump is set on the clean water pipeline to pump the clean water in the clean water tank to the spray head.

9. A cleaning robot, characterized in that, include: Chassis components; And the water tank assembly according to any one of claims 1 to 8, wherein the bottom side of the clean water tank is rotatably disposed on the chassis assembly, wherein a control panel is disposed on the outer side wall of the clean water tank.

10. The cleaning robot as described in claim 9, characterized in that: A strut assembly is connected between the chassis assembly and the water tank assembly; the strut assembly includes a first slide rod and a second slide rod that are slidably disposed relative to each other, and an anti-fall device is provided between the first slide rod and the second slide rod to prevent the first slide rod and the second slide rod from sliding relative to each other.

11. The cleaning robot as described in claim 10, characterized in that: The fall arrestor includes a locking assembly disposed on the first slide bar and at least one positioning groove disposed on the second slide bar, wherein the locking assembly is used to be inserted into and engaged with the positioning groove.

12. The cleaning robot as described in claim 9, characterized in that: A magnetic attraction sensing component is provided between the chassis assembly and the water tank assembly, and the magnetic attraction sensing component is electrically connected to the control module of the cleaning robot.

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