Water tank and cleaning robot

Abstract

A water tank and a cleaning robot, relating to the technical field of cleaning devices. The water tank is provided in a water tank accommodating groove (41) of a robot body (4); the water tank comprises a first tank body (1) and a second tank body (2) located in the first tank body (1); and the center of gravity line of the first tank body (1) is collinear with the center of gravity line of the second tank body (2). The change of the center of gravity of the water tank in the working process can be effectively reduced, thereby ensuring the stability of the cleaning robot during movement.

Description

Water tank and cleaning robot

[0001] This application claims priority to the Chinese patent application filed with the State Intellectual Property Office of China on August 21, 2023, with application number 202322257608.X and invention name “Water Tank and Cleaning Robot”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of cleaning equipment, and in particular to a water tank and a cleaning robot. Background Art

[0003] The working principle of a cleaning robot is to spray clean water from a clean water tank onto the ground while collecting wastewater on the ground, filtering it and recycling it back into the clean water tank. Therefore, a floor scrubber generally has two tanks: the clean water tank stores clean water, while the wastewater tank stores recycled wastewater. During operation, the water level in the clean water tank decreases while the water level in the wastewater tank increases, causing the center of gravity to constantly shift, thus affecting the stability of the cleaning robot during movement.

[0004] Application Contents

[0005] The purpose of this application is to provide a water tank and a cleaning robot, wherein the water tank can effectively reduce the change of the center of gravity during the working process, thereby ensuring the stability of the cleaning robot during movement.

[0006] To this end, in a first aspect, an embodiment of the present application provides a water tank, which is arranged in a water tank receiving groove of a machine body. The water tank includes a first box body and a second box body located inside the first box body. The center of gravity line of the first box body is collinear with the center of gravity line of the second box body.

[0007] In a possible implementation, the inner bottom wall of the first box body is provided with a supporting protrusion for supporting the second box body, and a space is left between the bottom of the second box body and the inner bottom wall of the first box body.

[0008] In a possible implementation, a positioning protrusion is provided on the inner side wall of the first box body, and the positioning protrusion abuts against the outer peripheral surface of the second box body.

[0009] In a possible implementation, a water inlet is provided at the top of the first box body, and a water outlet is provided at the bottom of the first box body.

[0010] In a possible implementation, a water suction pipe and a negative pressure air duct penetrating the bottom wall of the first box body are provided inside the second box body. The water suction pipe is used to connect to the squeegee, and the negative pressure air duct is used to connect to the negative pressure fan.

[0011] In a possible implementation, a first filter cover is provided at the top of the water suction pipe, the air inlet of the negative pressure air duct is located at the top of the second box body, and a second filter cover is provided at the air inlet of the negative pressure air duct.

[0012] In a possible implementation, the top of the second box body is connected to the first box body, the top of the second box body is provided with a cleaning port, and a box cover is provided at the cleaning port.

[0013] In one possible implementation, a limit rod is provided in the water tank receiving groove; the water tank also includes a handle, the handle includes: two rotating parts, which can be rotatably arranged on opposite sides of the first box body, and a limit slide is provided on the rotating part, and the limit slide is used to limit the limit rod; and a carrying part, which is connected to the two rotating parts; wherein, when the handle is in a vertical state, the limit rod can be detached from the limit slide through the opening of the limit slide.

[0014] In a possible implementation, a first magnetic member is provided on the top of the first box body, and a second magnetic member is provided on the handle. When the handle is in a laid-down state, the first magnetic member is magnetically connected to the second magnetic member.

[0015] In a second aspect, an embodiment of the present application provides a cleaning robot, comprising: a body having a water tank receiving groove; and the above-mentioned water tank, which is arranged in the water tank receiving groove of the body.

[0016] According to the water tank and cleaning robot provided in the embodiments of the present application, the water tank is configured such that a second tank body is disposed within a first tank body, and the center of gravity line of the first tank body is collinear with the center of gravity line of the second tank body. As the amount of water in the first tank body decreases, the amount of water in the second tank body increases synchronously, or as the amount of water in the second tank body decreases, the amount of water in the first tank body increases synchronously. This can effectively reduce changes in the center of gravity during operation, thereby ensuring the stability of the cleaning robot during movement. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0018] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0019] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings are represented as similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0020] FIG1 is a schematic diagram showing the three-dimensional structure of a water tank provided in an embodiment of the present application;

[0021] FIG2 is a schematic diagram showing a top view of a water tank provided in an embodiment of the present application;

[0022] FIG3 is a schematic diagram showing a cross-sectional structure of the water tank shown in FIG3 along the AA direction;

[0023] FIG4 is a schematic structural diagram of a water tank provided in an embodiment of the present application with the tank cover removed;

[0024] FIG5 is a schematic structural diagram of a water tank provided by an embodiment of the present application when the handle is in a vertical state;

[0025] FIG6 shows a schematic diagram of the exploded structure of a cleaning robot provided in an embodiment of the present application.

[0026] Description of reference numerals:

[0027] 1. First box; 11. Support protrusion; 12. Positioning protrusion; 13. Water inlet; 14. Water outlet; 15. First magnetic element;

[0028] 2. Second box body; 21. Water suction pipe; 22. Negative pressure air duct; 23. First filter cover; 24. Second filter cover; 241. Sealing shell; 242. Mesh cover; 25. Box cover;

[0029] 3. Handle; 31. Rotating portion; 311. Limiting slide; 3111. Opening; 32. Handle portion; 321. Second magnetic element;

[0030] 4. Machine body; 41. Water tank receiving groove; 42. Limit rod. DETAILED DESCRIPTION

[0031] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0032] The disclosure below provides many different embodiments or examples for implementing different structures of the embodiments of the present application. In order to simplify the disclosure of the embodiments of the present application, the components and settings of specific examples are described below. Of course, they are merely examples and are not intended to limit the embodiments of the present application. In addition, the embodiments of the present application may repeat reference numbers and / or letters in different examples. This repetition is for the purpose of simplicity and clarity and does not itself indicate the relationship between the various embodiments and / or settings discussed.

[0033] For ease of description, spatially relative terms may be used herein to describe the relative position or movement of one element or feature relative to another element or feature as shown in the figures, such as "inside," "outside," "inside," "outside," "below," "beneath," "above," "above," "front," "back," and the like. Such spatially relative terms are intended to include different orientations of the device in use or operation other than the orientation depicted in the figures. For example, if the device in the figures undergoes a positional flip or a change in posture or a change in motion, then these directional indications will also change accordingly. For example, an element described as "below" or "below" another element or feature will subsequently be oriented as "above" or "above" another element or feature. Thus, the example term "below" can include both above and below orientations. The device may be oriented otherwise (rotated 90 degrees or in other orientations) and the spatially relative descriptors used herein will be interpreted accordingly.

[0034] In order to solve the problems in the prior art, the present application provides a water tank that can effectively reduce the change of the center of gravity during the working process, thereby ensuring the stability of the cleaning robot during movement.

[0035] Figure 1 shows a schematic diagram of the three-dimensional structure of a water tank provided in an embodiment of the present application; Figure 2 shows a schematic diagram of the top structure of a water tank provided in an embodiment of the present application; Figure 3 shows a schematic diagram of the cross-sectional structure of the water tank shown in Figure 3 along the AA direction; Figure 4 shows a schematic diagram of the structure of a water tank provided in an embodiment of the present application with the tank cover removed; Figure 5 shows a schematic diagram of the structure of a water tank provided in an embodiment of the present application when the handle is in a vertical state; Figure 6 shows a schematic diagram of the exploded structure of a cleaning robot provided in an embodiment of the present application.

[0036] As shown in Figures 1 to 6, a water tank provided in an embodiment of the present application is arranged in a water tank receiving groove 41 of a body 4. The water tank includes a first box body 1 and a second box body 2 located inside the first box body 1. The center of gravity line of the first box body 1 is collinear with the center of gravity line of the second box body 2.

[0037] In the present application, by arranging the second box body 2 in the first box body 1, and the center of gravity line of the first box body 1 is collinear with the center of gravity line of the second box body 2, as the amount of water in the first box body 1 decreases, the amount of water in the second box body 2 increases synchronously, or as the amount of water in the second box body 2 decreases, the amount of water in the first box body 1 increases synchronously, the change of the center of gravity during the work process can be effectively reduced, thereby ensuring the stability of the cleaning robot during movement.

[0038] Specifically, the first tank 1 is a clean water tank, and the second tank 2 is a sewage tank. The water in the first tank 1 is sprayed onto the ground to clean the ground, and the sewage on the ground is sucked back into the second tank 2 by the squeegee. The total amount of water remains almost unchanged. As the clean water in the first tank 1 decreases, the sewage in the second tank 2 increases synchronously, thereby ensuring that the overall center of gravity of the water tank remains unchanged, thereby improving the stability of the cleaning robot during movement.

[0039] Optionally, the first box body 1 can also be a sewage tank, and the second box body 2 can be a clean water tank, which can also ensure that the center of gravity of the water tank remains unchanged.

[0040] In related technologies, cleaning robots generally have separate clean water tanks and sewage tanks. These need to be removed separately when filling and emptying water, which is cumbersome and affects the user experience. This application integrates the first tank 1 and the second tank 2 together, allowing for water filling after sewage is drained, making operation simple and improving user experience.

[0041] In some embodiments, the inner bottom wall of the first box body 1 is provided with a supporting protrusion 11 for supporting the second box body 2 , and a space is left between the bottom of the second box body 2 and the inner bottom wall of the first box body 1 .

[0042] In the present application, the second housing 2 is supported by the support protrusions 11 on the inner bottom wall of the first housing 1, so that a gap is left between the bottom of the second housing 2 and the inner bottom wall of the first housing 1, thereby facilitating the communication of clean water in the first housing 1 with the spray mechanism of the body 4 through the water outlet at the bottom. Moreover, only a small interlayer space is required between the bottom of the second housing 2 and the inner bottom wall of the first housing 1, ensuring that the overall center of gravity of the water tank does not change too much during operation, thereby ensuring the stability of the cleaning robot during movement.

[0043] Optionally, a supporting protrusion 11 may be provided at the bottom of the second box body 2 , and a space may also be left between the bottom of the second box body 2 and the inner bottom wall of the first box body 1 .

[0044] In another embodiment, the bottom of the second box body 2 is fitted with or integrally formed with the inner bottom wall of the first box body 1, so that the center of gravity of the entire water tank remains unchanged, and the water outlet at the bottom of the first box body 1 can be set on the outer circle of the second box body 2.

[0045] In some embodiments, a positioning protrusion 12 is provided on the inner side wall of the first box body 1 , and the positioning protrusion 12 abuts against the outer peripheral surface of the second box body 2 .

[0046] In the present application, the positioning protrusions 12 abut against the outer circumference of the second tank body 2, thereby ensuring the stability of the second tank body 2 inside the first tank body 1. Optionally, the positioning protrusions 12 can also be provided on the outer circumference of the second tank body 2, abutting against the inner bottom wall of the first tank body 1. In another embodiment, the first tank body 1 and the second tank body 2 can also be integrally formed, with the positioning protrusions 12 supporting the first tank body 1 and the second tank body 2 between the inner side wall of the first tank body 1 and the outer side of the second tank body 2, thereby ensuring the stability of the water tank structure and ensuring that the center of the first tank body 1 and the center of the second tank body 2 can be located on the same vertical line.

[0047] In some embodiments, a water inlet 13 is provided at the top of the first box body 1 , and a water outlet 14 is provided at the bottom of the first box body 1 .

[0048] In this application, clean water is added to the first housing 1 through the water inlet 13. The clean water in the first housing 1 is connected to the spraying mechanism of the body 4 through the water outlet 14, and is used to deliver the clean water in the first housing 1 to the spraying mechanism for cleaning the floor. Specifically, a screw cap is provided at the water inlet 13 to seal the water inlet 13. When water is needed, the screw cap can be turned to open it.

[0049] In some embodiments, a water suction pipe 21 and a negative pressure air duct 22 are provided inside the second box body 2 and pass through the bottom wall of the first box body 1. The water suction pipe 21 is used to connect to the squeegee, and the negative pressure air duct 22 is used to connect to the negative pressure fan.

[0050] In this application, the negative pressure air duct 22 is connected to the negative pressure fan to exhaust air inside the second box body 2, so that the interior of the second box body 2 becomes a negative pressure environment. Under the action of the pressure difference, the sewage at the squeegee is sucked through the suction pipe 21, thereby sucking the sewage on the ground into the second box body 2.

[0051] In some embodiments, a first filter cover 23 is provided at the top of the water suction pipe 21 , the air inlet of the negative pressure air duct 22 is located at the top of the second box body 2 , and a second filter cover 24 is provided at the air inlet of the negative pressure air duct 22 .

[0052] In the present application, the bottom of the water suction pipe 21 passes through the bottom wall of the first box body 1 and is connected to the squeegee, sucking the sewage to the top of the water suction pipe 21, and filtering the impurities in the sewage through the first filter cover 23; the bottom of the negative pressure air duct 22 passes through the bottom wall of the first box body 1 and is connected to the negative pressure fan, and the impurities in the second box body 2 are prevented from entering the negative pressure air duct 22 through the second filter cover 24.

[0053] In some embodiments, the top of the second box body 2 is connected to the first box body 1 , and a cleaning port is provided on the top of the second box body 2 , and a box cover 25 is provided at the cleaning port.

[0054] In this application, the sewage in the second housing 2 can be discharged through the cleaning port, and impurities in the first filter cover 23 and the second filter cover 24 can be cleaned. The housing cover 25 seals the cleaning port, so that the interior of the second housing 2 can be a negative pressure environment, and the sewage can be sucked out. Specifically, the housing cover 25 covers the cleaning port, and the second filter cover 24 abuts the bottom of the housing cover 25, so that the gas in the second housing 2 must be filtered by the second filter cover 24 before entering the negative pressure air duct 22.

[0055] Specifically, the second filter cover 24 includes a sealing shell and a mesh cover connected to the bottom of the sealing shell. The sealing shell abuts the bottom of the box cover 25 to form a relatively closed space between the sealing shell and the box cover 25, and the top of the negative pressure air duct 22 is connected to the bottom of the sealing shell.

[0056] In some embodiments, a limiting rod 42 is provided in the water tank receiving groove 41; the water tank also includes a handle 3, the handle 3 includes: two rotating parts 31, which can be rotatably arranged on opposite sides of the first box body 1, and a limiting slide 311 is provided on the rotating part 31, and the limiting slide 311 is used to limit the limiting rod 42; and a carrying part 32, which is connected to the two rotating parts 31; wherein, when the handle 3 is in a vertical state, the limiting rod 42 can be detached from the limiting slide 311 through the opening 3111 of the limiting slide 311.

[0057] In the present application, after the water tank is placed in the water tank receiving slot 41 of the machine body 4, the hand-held portion 32 of the handle 3 can be placed on the first box body 1 through the rotating portion 31, and the limiting rod 42 is located in the limiting slide 311, thereby limiting and self-locking the water tank, pressing the water tank into the water tank receiving slot 41, and ensuring the stability of the water tank in the water tank receiving slot 41. When the water tank needs to be lifted out of the water tank receiving slot 41, it is necessary to first process the handle 3 and rotate it to a vertical state. At this time, the limiting rod 42 is located at the opening 3111 of the limiting slide 311, releasing the limit on the water tank, so that the water tank can be lifted out. The structure is simple, and the water tank is automatically locked after being placed in the water tank. When the water tank needs to be lifted out, it is automatically unlocked by rotating the handle 3.

[0058] Specifically, the limiting chute 311 is an arc-shaped structure with an opening 3111 for the limiting rod 42 to enter and exit. When the handle 3 is in the vertical position, the opening 3111 is aligned with the limiting rod 42, allowing the water tank to be placed in or removed from the water tank receiving groove 41. As the handle 3 rotates, the limiting rod 42 enters the limiting chute 311 to act as a limiter. After the handle 3 is placed on the first housing 1, the limiting rod 42 also acts as a pressure in the limiting chute 311 to ensure the stability of the water tank in the water tank receiving groove 41.

[0059] In some embodiments, a first magnetic member 15 is provided on the top of the first box body 1, and a second magnetic member 321 is provided on the handheld portion 32. When the handle 3 is in a laid-down state, the first magnetic member 15 is magnetically connected to the second magnetic member 321.

[0060] In this application, when the handhold portion 32 of the handle 3 is placed on the first housing 1, the first magnetic member 15 and the second magnetic member 321 are magnetically connected, securing the handle 3 and preventing it from loosening due to collision or jolts between the water tank and the housing 4. When the user needs to lift the water tank, the lifting force is greater than the attraction between the first magnetic member 15 and the second magnetic member 321, naturally unlocking the self-locking function.

[0061] Optionally, the handle 3 can be self-locked with the first housing 1 through a snap-fit ​​structure to prevent the handle 3 from rotating. For example, a snap-fit ​​groove can be provided on the first housing 1, and a rubber clip can be provided on the handle 3. The rubber clip can be snapped into the snap-fit ​​groove to secure the handle 3. When the water tank needs to be lifted out, the rubber clip can be pulled out of the snap-fit ​​groove.

[0062] The water tank is configured such that the second tank body 2 is arranged in the first tank body 1, and the center of the first tank body 1 and the center of the second tank body 2 are located on the same vertical line. As the amount of water in the first tank body 1 decreases, the amount of water in the second tank body 2 increases synchronously, or as the amount of water in the second tank body 2 decreases, the amount of water in the first tank body 1 increases synchronously. This can effectively reduce the change of the center of gravity during operation, thereby ensuring the stability of the cleaning robot during movement.

[0063] An embodiment of the present application provides a cleaning robot, comprising: a body 4 having a water tank accommodating groove 41 ; and the above-mentioned water tank, which is arranged in the water tank accommodating groove 41 of the body 4 .

[0064] In the present application, the water tank integrates the first box body 1 and the second box body 2 together, and the water tank is placed in the water tank receiving groove 41. The sewage can be discharged and the clean water can be added at the same time by taking it out and putting it in at one time.

[0065] Specifically, the water tank receiving slot 41 of the housing 4 is provided with a water inlet connected to the water outlet of the first housing 1, a water inlet connected to the water suction pipe 21, and an air outlet connected to the negative pressure air duct 22. When the water tank is placed in the water tank receiving slot 41, the water outlet automatically connects with the water inlet, the water suction pipe 21 automatically connects with the water inlet, and the negative pressure air duct 22 automatically connects with the air outlet.

[0066] It should be understood that the terms used herein are for the purpose of describing specific example embodiments only and are not intended to be limiting. Unless the context clearly indicates otherwise, the singular forms "one", "an" and "said" as used herein may also be meant to include plural forms. The terms "comprise", "include", "contain" and "have" are inclusive and therefore specify the presence of stated features, steps, operations, elements and / or parts, but do not exclude the presence or addition of one or more other features, steps, operations, elements, parts, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring them to be performed in the specific order described or illustrated, unless the order of execution is clearly indicated. It should also be understood that additional or alternative steps may be used.

[0067] Although the terms first, second, third, etc. can be used in the text to describe multiple elements, components, regions, layers and / or sections, these elements, components, regions, layers and / or sections should not be limited by these terms. These terms can only be used to distinguish an element, component, region, layer or section from another region, layer or section. Unless the context clearly indicates otherwise, terms such as "first", "second" and other numerical terms do not imply order or sequence when used in the text. Therefore, the first element, component, region, layer or section discussed below can be referred to as the second element, component, region, layer or section without departing from the teaching of the example embodiments.

[0068] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A water tank, arranged in a water tank receiving tank (41) of a machine body (4); characterized in that: The water tank comprises a first tank body (1) and a second tank body (2) located inside the first tank body (1), and the center of gravity line of the first tank body (1) and the center of gravity line of the second tank body (2) are collinear.

2. The water tank according to claim 1, characterized in that: The inner bottom wall of the first box body (1) is provided with a supporting protrusion (11) for supporting the second box body (2), and a space is left between the bottom of the second box body (2) and the inner bottom wall of the first box body (1).

3. The water tank according to claim 1 or 2, characterized in that: A positioning protrusion (12) is provided on the inner side wall of the first box body (1), and the positioning protrusion (12) abuts against the outer peripheral surface of the second box body (2).

4. The water tank according to claim 1, characterized in that The top of the first box body (1) is provided with a water inlet (13), and the bottom of the first box body (1) is provided with a water outlet (14).

5. The water tank according to claim 1, characterized in that: The second box body (2) is provided with a water suction pipe (21) and a negative pressure air pipe (22) penetrating the bottom wall of the first box body (1); the water suction pipe (21) is used to connect to a water suction squeegee, and the negative pressure air pipe (22) is used to connect to a negative pressure fan.

6. The water tank according to claim 5, characterized in that A first filter cover (23) is provided at the top of the water suction pipe (21), an air inlet of the negative pressure air duct (22) is located at the top of the second box body (2), and a second filter cover (24) is provided at the air inlet of the negative pressure air duct (22).

7. The water tank according to claim 5, characterized in that The top of the second box body (2) is connected to the first box body (1), and a cleaning port is provided on the top of the second box body (2), and a box cover (25) is provided at the cleaning port.

8. The water tank according to claim 1, characterized in that A limiting rod (42) is arranged in the water tank receiving groove (41); the water tank further comprises a handle (3), and the handle (3) comprises: Two rotating parts (31) are rotatably arranged on two opposite sides of the first box body (1), and a limiting sliding groove (311) is arranged on the rotating part (31), and the limiting sliding groove (311) is used to limit the limiting rod (42); and A hand-held part (32) connected to the two rotating parts (31); Wherein, when the handle (3) is in a vertical state, the limiting rod (42) can be separated from the limiting sliding groove (311) through the opening (3111) of the limiting sliding groove (311).

9. The water tank according to claim 8, characterized in that A first magnetic member (15) is arranged on the top of the first box body (1), and a second magnetic member (321) is arranged on the hand-held portion (32); when the handle (3) is in a laid-down state, the first magnetic member (15) is magnetically connected to the second magnetic member (321).

10. A cleaning robot, characterized in that: include: The machine body (4) has a water tank containing tank (41); as well as The water tank according to any one of claims 1 to 9, wherein the water tank is arranged in a water tank receiving groove (41) of the machine body (4).

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