Automatic cleaning device

Abstract

The utility model discloses an automatic cleaning device which comprises a main frame, and the main frame is used for installing at least one of a control module, a driving module or a dust collecting module of the automatic cleaning device. The secondary frame is arranged on one side of the main frame and is movably connected with the main frame; the cleaning mechanism is arranged on the side, facing the surface to be cleaned, of the secondary frame and connected with the secondary frame; the water scraping groove is formed in the secondary frame and abuts against the cleaning mechanism; the secondary frame can move relative to the main frame so that the cleaning mechanism and the water scraping groove can ascend and descend along with the secondary frame, and therefore the cleaning mechanism and the water scraping groove are driven to be close to or away from the surface to be cleaned. By arranging the main frame and the secondary frame which are connected with each other and can move relatively and arranging the cleaning mechanism and the water scraping groove on the secondary frame, the cleaning mechanism can adaptively float along with the secondary frame when meeting an uneven to-be-cleaned surface, and the situation that the cleaning mechanism does not clean in place or non-uniform water stains are left on the to-be-cleaned surface is avoided.

Description

Technical Field

[0001] This application is a divisional application with application number 2023235451129, application date December 25, 2023, and invention name "Automatic Cleaning Device". The utility model relates to the field of automatic cleaning equipment, and in particular to an automatic cleaning device. Background Art

[0002] Automatic cleaning devices include a cleaning mechanism for mopping the floor and a water supply mechanism. The water supply mechanism is used to supply clean water to the cleaning element in the cleaning mechanism or the floor, keeping the cleaning element or the floor moist. Simultaneously, the cleaning element contacts and rubs against the floor to remove dust and impurities. When cleaning uneven floors (e.g., with raised or recessed areas), existing automatic cleaning devices can cause the cleaning element to be squeezed more severely by the raised areas, leaving more water stains, hindering drying and resulting in uneven water stains. Concave areas can also cause the cleaning element to not fully clean the floor, or water stains to accumulate in the recessed areas. Utility Model Content

[0003] The main purpose of the utility model is to provide an automatic cleaning device, which aims to solve the problems of inadequate cleaning or uneven water stains caused by existing cleaning devices when cleaning uneven floors.

[0004] To achieve the above objectives, the present invention provides an automatic cleaning device for cleaning a surface to be cleaned, the automatic cleaning device comprising:

[0005] a main frame, the main frame being used to mount at least one of a control module, a drive module, or a dust collection module of the automatic cleaning device;

[0006] A secondary frame, the secondary frame is arranged on one side of the main frame and is movably connected to the main frame;

[0007] a cleaning mechanism, the cleaning mechanism being disposed on a side of the sub-frame facing the surface to be cleaned and connected to the sub-frame; and

[0008] a scraper groove, the scraper groove being provided on the secondary frame and abutting against the cleaning mechanism;

[0009] The secondary frame can move relative to the main frame, so that the cleaning mechanism and the wiper groove can be lifted and lowered together with the secondary frame, thereby driving the cleaning mechanism and the wiper groove to approach or move away from the surface to be cleaned.

[0010] In some embodiments, the cleaning mechanism comprises:

[0011] a bracket, the bracket being arranged on a side of the sub-frame facing the surface to be cleaned; and

[0012] a cleaning member, the cleaning member being arranged on the bracket and being used to clean the surface to be cleaned;

[0013] The wiper groove abuts against the cleaning member so that dirt on the cleaning member is scraped into the wiper groove during the rotation of the cleaning member.

[0014] In some embodiments, the secondary frame and the main frame are movably connected in a manner that includes at least one of a hinge connection, a sliding connection, an elastic member connection, or a connecting rod connection.

[0015] In some embodiments, the main frame and the secondary frame are hinged, and an extension portion is provided on one side of the main frame or the secondary frame facing the other, and the main frame or the secondary frame is hinged to the other through the extension portion; or

[0016] The main frame is slidably connected to the secondary frame, the main frame is provided with a mounting portion, a sliding module is provided between the mounting portion and the secondary frame, the sliding module is connected to the mounting portion and the secondary frame, and the sliding module slides on the mounting portion to drive the secondary frame to slide relative to the main frame; or

[0017] The main frame and the sub-frame are connected via an elastic member, and the automatic cleaning device further comprises the elastic member, one end of the elastic member is connected to the main frame, and the other end of the elastic member is connected to the sub-frame; or

[0018] The main frame and the secondary frame are connected via a connecting rod. The automatic cleaning device further comprises the connecting rod, one end of the connecting rod is connected to the main frame, and the other end of the connecting rod is connected to the secondary frame.

[0019] In some embodiments, the automatic cleaning device further comprises: a sewage tank assembly and / or a clean water tank assembly, wherein the sewage tank assembly and / or the clean water tank assembly are arranged on the sub-frame and rise and fall together with the sub-frame.

[0020] In some embodiments, the automatic cleaning device further comprises: a sewage tank assembly, the sewage tank assembly comprising a sewage tank body, the sewage tank body being accommodated in the accommodating cavity of the sub-frame; and / or,

[0021] The automatic cleaning device further comprises: a clean water tank assembly, wherein the clean water tank assembly comprises a clean water tank body, and the clean water tank body is arranged outside the accommodating cavity of the sub-frame.

[0022] In some embodiments, the automatic cleaning device further comprises: a driving mechanism, wherein the driving mechanism is connected to the sub-frame and is used to drive the sub-frame to rise and fall so as to move the sub-frame closer to or away from the surface to be cleaned.

[0023] In some embodiments, the driving mechanism comprises:

[0024] a motor, wherein the motor is arranged on the main frame;

[0025] a traction wheel connected to an output shaft of the motor;

[0026] A rope, one end of which is wound around the traction wheel, and the other end of which is connected to the secondary frame.

[0027] In some embodiments, the automatic cleaning device further comprises a mounting plate fixedly mounted above the sub-frame, wherein the mounting plate is provided with a mounting groove, and an end of the rope away from the traction wheel is embedded in the mounting groove and connected to the sub-frame.

[0028] In some embodiments, a guide tube is provided in the mounting groove, and an end of the rope away from the traction wheel passes through the guide tube and is connected to the sub-frame.

[0029] In some embodiments, the automatic cleaning device further comprises:

[0030] a guide sleeve, the guide sleeve being arranged on the secondary frame;

[0031] A guide post is provided at an end of the rope away from the traction wheel, and the guide post is slidably connected in the guide sleeve.

[0032] In some embodiments, one end of the guide sleeve is closed, and the guide column includes a sliding portion and a clamping portion. During the sliding of the guide column in the guide sleeve, the sliding portion can slide out of the closed end of the guide sleeve, and the clamping portion cannot slide out of the closed end of the guide sleeve.

[0033] In some embodiments, the driving mechanism includes: an electromagnetic push rod, one end of the electromagnetic push rod is connected to the main frame, and the other end of the electromagnetic push rod is connected to the sub-frame, and the extension and retraction of the electromagnetic push rod causes the sub-frame to move relative to the main frame; and / or,

[0034] A reset piece is provided at the connection between the main frame and the secondary frame.

[0035] The utility model provides a main frame and a sub-frame that are connected to each other and can move relative to each other, and the cleaning mechanism is arranged on the sub-frame. When encountering uneven areas on the surface to be cleaned, the cleaning mechanism will passively float with the sub-frame, avoiding the cleaning mechanism from failing to clean properly or leaving uneven water stains on the surface to be cleaned. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a structural diagram of an embodiment of the automatic cleaning device of the present utility model;

[0037] Figure 2 for Figure 1 A schematic structural diagram of the secondary frame and cleaning mechanism in the embodiment;

[0038] Figure 3 for Figure 2 An exploded view of the automatic cleaning device in an embodiment;

[0039] Figure 4 for Figure 1 A schematic structural diagram of the secondary frame and the main frame in the embodiment;

[0040] Figure 5 for Figure 1 A schematic structural diagram of the driving mechanism in the embodiment;

[0041] Figure 6 This is a structural diagram of another embodiment of the automatic cleaning device of the present utility model;

[0042] Figure 7 This is a structural diagram of another embodiment of the automatic cleaning device of the utility model;

[0043] Figure 8 This is a structural diagram of another embodiment of the automatic cleaning device of the present utility model;

[0044] Figure 9 This is a structural diagram of another embodiment of the automatic cleaning device of the present utility model.

[0045] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0046] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the schemes in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0047] It should be noted that all directional indications in the embodiments of the present invention, such as up, down, left, right, front, back, etc., are only used to explain the relative position relationship and movement status of the various components in a certain specific posture, that is, as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0048] It should also be noted that when an element is referred to as being "fixed on" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element.

[0049] In addition, the descriptions of "first," "second," etc. in this utility model are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by this utility model.

[0050] The utility model also proposes an automatic cleaning device, referring to Figures 1 to 3 , the automatic cleaning device comprises:

[0051] Main frame 20;

[0052] The secondary frame 10 is provided on one side of the main frame 20 and is movably connected to the main frame 20;

[0053] A cleaning mechanism 60 is provided on a side of the sub-frame 10 facing the surface to be cleaned and is connected to the sub-frame 10;

[0054] The secondary frame 10 can move relative to the main frame 20 to drive the cleaning mechanism 60 to move closer to or away from the surface to be cleaned.

[0055] In this embodiment, referring to Figures 1 to 3 The main frame 20 can also be used to install at least one of the control module, drive module, dust collection module or other modules of the automatic cleaning device, and the sub-frame 10 can be used to install at least one of the water tank, cleaning mechanism 60 or other components. The cleaning mechanism 60 includes a bracket 61 arranged on the side of the sub-frame 10 facing the surface to be cleaned and a cleaning member 62 arranged on the bracket 61. The cleaning member 62 includes but is not limited to a side brush, a roller brush, a roller, a mop or other components that can be used for cleaning.

[0056] In some embodiments, the cleaning member 62 is a crawler mop, and the bracket 61 includes at least one roller. The crawler mop is wound around the roller and installed on the sub-frame 10 through the bracket 61. A motor or the like can be provided as a power source of the cleaning mechanism 60 to drive the roller to rotate and drive the crawler mop to rotate, thereby cleaning the surface to be cleaned (for example, the ground).

[0057] In some embodiments, the movable connection between the main frame 20 and the secondary frame 10 can be in the form of a direct hinge, such as an extension portion extending toward the other side of the main frame 20 or the secondary frame 10, and the extension portion is hingedly connected to the other side. Specifically, the extension portion extends from the secondary frame 10 toward the main frame 20, and the end of the extension portion is hingedly connected to the main frame 20. The extension portion allows the end of the secondary frame 10 away from the hinge point to rise or fall relative to the hinge point, preventing the secondary frame 10 from rising and falling at one end during the lifting process.

[0058] In some embodiments, reference Figure 7 , the main frame 20 is slidably connected to the sub-frame 10, and the sliding direction of the sub-frame 10 intersects with the surface to be cleaned. The sliding direction of the sub-frame 10 can be perpendicular to the surface to be cleaned, and can also form an acute angle or an obtuse angle with the surface to be cleaned. In this embodiment, a pair of mounting portions 21 extending toward the sub-frame 10 can be provided on the main frame 20, and a mounting position for mounting the sub-frame 10 is formed between the two mounting portions 21. A sliding module 22 is provided between the mounting portion 21 and the sub-frame 10, and the sliding module 22 is used to connect the mounting portion 21 and the sub-frame 10. The sliding module 22 slides on the mounting portion 21 to achieve a sliding connection between the sub-frame 10 and the main frame 20. For example, the sliding module includes a slide groove provided on the mounting portion 21, and a sliding block provided to match the slide groove. The sliding block slides in the slide groove, and the sliding block is also fixedly connected to the sub-frame 10. In addition, any other form that can achieve sliding is also possible, and is not limited here.

[0059] In some embodiments, during the cleaning process of the automatic cleaning device, the main frame 20 is located at the front end of the cleaning path, while the sub-frame 10 and cleaning mechanism 60 are located at the rear end of the cleaning path. When a raised portion of the surface to be cleaned contacts the cleaning mechanism 60, a thrust is applied to the cleaning mechanism 60 toward the rear of the cleaning path. Therefore, the sliding module 22 can be tilted so that the cleaning mechanism 60 moves diagonally upward relative to the frame when it is raised, thereby reducing resistance when the sub-frame 10 is raised.

[0060] During the process of cleaning the surface to be cleaned, if the cleaning mechanism 60 cannot float adaptively, when the cleaning mechanism 60 encounters a protrusion on the surface to be cleaned, it will not be able to clean in place due to resistance, or it will cause uneven water stains; or, when the cleaning mechanism 60 encounters a recessed part of the surface to be cleaned, it will not be able to clean the recessed part well, or the water stains will gather in the recessed part.

[0061] In addition to the hinged and sliding connection methods mentioned above, the main frame 20 and the sub-frame 10 can also be connected by referring to Figure 8The main frame 20 and the secondary frame 10 can also be connected by an elastic member 31. The elastic member 31 can be a spring, an air spring, a shrapnel, etc. One end of the elastic member 31 is connected to the main frame 20 and the other end is connected to the secondary frame 10. When encountering the above-mentioned protrusion, the cleaning mechanism 60 is pushed to swing up.

[0062] The present invention provides a main frame 20 and a sub-frame 10 that are connected to each other and can move relative to each other, and arranges a cleaning mechanism 60 on the sub-frame 10. When the surface to be cleaned encounters unevenness, the cleaning mechanism 60 will adaptively float on its own or passively float with the sub-frame 10, avoiding excessive squeezing of the cleaning mechanism 60 by protrusions and leaving uneven water stains on the ground, or preventing concave areas from being effectively cleaned and water stains from gathering in the concave areas.

[0063] In some embodiments, reference Figures 2 to 3 、 Figure 6 The automatic cleaning device further includes a connecting rod 30, one end of which is connected to the secondary frame 10 and the other end is connected to the main frame 20. In this embodiment, a single connecting rod 30 can be provided, with one end of the connecting rod 30 hinged to the main frame 20 and the other end hinged to the secondary frame 10, to achieve a floating setting of the secondary frame 10. Multiple connecting rods 30 can also be used to connect the main frame 20 and the secondary frame 10, thereby forming a multi-link mechanism. During lifting, both ends of the secondary frame 10 need to be lifted simultaneously. Therefore, in this embodiment, the link mechanism can be further optimized. Specifically, two parallel connecting rods 30 are provided, and the line connecting the hinge points of the two connecting rods 30 and the main frame 20 is perpendicular to the ground, and the line connecting the hinge points of the two connecting rods 30 and the secondary frame 10 is perpendicular to the ground. Thus, the connecting rod 30, the main frame 20, and the secondary frame 10 form a parallelogram linkage mechanism, and the secondary frame 10 always remains flat during the lifting process. The sewage tank 50 and / or the clean water tank 80 that follow the subframe 10 will not tilt with the lifting of the subframe 10, thus preventing the liquid in the tank from spilling. In order to maintain the balance of the subframe 10 and to simultaneously apply force to both ends, connecting rods 30 may be provided at both ends.

[0064] In some embodiments, reference Figure 1, the automatic cleaning device also includes a driving mechanism 70 for driving the sub-frame 10 to move closer to or away from the surface to be cleaned. In the above embodiment, the sub-frame 10 is passively lifted by the jacking of the raised ground. In this embodiment, a driving mechanism 70 can be provided to drive the sub-frame 10 to actively rise and fall. Specifically, an electromagnetic push rod 76 can be provided with one end connected (for example, hinged) to the main frame 20 and the other end connected (for example, hinged) to the sub-frame 10. The extension and retraction of the electromagnetic push rod 76 allows the sub-frame 10 to move relative to the main frame 20. A reset member 77 (for example, a torsion spring) can also be provided at the connection (for example, a hinge) between the main frame 20 and the sub-frame 10 so that the torsion of the torsion spring buffers the thrust when the electromagnetic push rod is pushed out. In addition to using the above-mentioned electromagnetic push rod as the driving force to drive the sub-frame 10 to lift, a motor and a corresponding transmission mechanism can also be provided to connect to the connecting rod 30 or the sub-frame 10 to drive the swing of the connecting rod 30 or drive the sub-frame 10 to move. For example, a motor is provided on the mounting portion, a gear is provided on the motor, and a rack adapted to the gear is provided on the sub-frame 10 , and the rotation of the motor drives the sub-frame 10 to slide.

[0065] In some embodiments, reference Figures 4 and 5 , the driving mechanism 70 includes:

[0066] The motor 71 is provided on the main frame 20;

[0067] a traction wheel 72 connected to the output shaft of the motor 71;

[0068] One end of the rope 73 is wound around the traction wheel 72 and the other end is connected to the secondary frame 10 .

[0069] In this embodiment, the rope 73 can be directly fixed on the sub-frame 10 or fixed on the connecting rod 30 to achieve connection with the sub-frame 10. The motor 71, the traction wheel 72 and the rope 73 constitute a winch to achieve traction of the sub-frame 10.

[0070] In some embodiments, reference Figure 1 The automatic cleaning device further includes a mounting plate 11 fixed above the sub-frame 10. The mounting plate 11 is provided with a mounting slot 13. The end of the rope 73, away from the traction wheel 72, is embedded in the mounting slot 13 and connected to the sub-frame 10. In this embodiment, two ropes 73 are provided, one end of each rope being wound around the traction wheel 72 and the other end being fixed to either side of the sub-frame 10. This ensures that the forces on the left and right sides of the sub-frame 10 are balanced when the sub-frame 10 is raised or lowered. The mounting slot 13 is provided on the mounting plate 11 to restrict the rope 73 from being retracted and extended within the mounting slot 13, thereby providing a positioning function.

[0071] In some embodiments, a guide tube 74 is fixedly mounted in the mounting slot 13. The end of the rope 73, away from the traction wheel 72, passes through the guide tube 74 and connects to the subframe 10. The guide tube 74 further constrains the rope 73, preventing it from escaping from the notch of the mounting slot 13 and interfering with other components. The rope 73, guide tube 74, and mounting slot 13 can be made of a self-lubricating material, or lubricant can be provided within the rope 73, guide tube 74, and mounting slot 13 to reduce friction on the rope 73.

[0072] In some embodiments, reference Figure 2 , the automatic cleaning device also includes:

[0073] A guide sleeve 12 is provided on the secondary frame 10;

[0074] A guide post 75 is provided at the end of the rope 73 away from the traction wheel 72. The guide post 75 is slidably connected within the guide sleeve 12. One end of the guide sleeve 12 is closed, and the guide post 75 includes a sliding portion 751 and a clamping portion 752. During the sliding of the guide post 75 within the guide sleeve 12, the sliding portion 751 can slide out of the closed end of the guide sleeve 12, while the clamping portion 752 cannot slide out of the closed end of the guide sleeve 12. By providing the guide sleeve 12 and the guide post 75, a certain amount of retraction margin is provided during the retraction and extension of the rope 73, thereby preventing the rope 73 from being retracted incompletely and the sub-frame 10 from remaining in an elevated state, or preventing the rope 73 from being retracted too much and causing the sub-frame 10 to be lifted too high and contact the components above it. By restricting the clamping portion 752 within the guide sleeve 12 and preventing it from sliding out, the rope 73 is prevented from being overtightened by the traction wheel 72, thereby controlling the range of motion of the sub-frame 10.

[0075] In some embodiments, reference Figure 8 , the automatic cleaning device also includes:

[0076] A sewage tank assembly 50 connected to the secondary frame 10; and / or,

[0077] The wiper groove 40 abuts against the cleaning mechanism 60; and / or,

[0078] The clean water tank assembly 80 is connected to the sub-frame 10 .

[0079] In this embodiment, at least one of the sewage tank assembly 50, the wiper trough 40, and the clean water tank assembly 80 can be disposed on the sub-frame 10. By disposing the sewage tank assembly 50, the wiper trough 40, and the clean water tank assembly 80 on the sub-frame 10, the three can be raised and lowered together with the sub-frame 10, thereby avoiding the need for complex and lengthy water channels connecting the cleaning mechanism 60 and the sewage tank assembly 50, the wiper trough 40, or the clean water tank assembly 80, and making the internal structure of the automatic cleaning device more compact.

[0080] In some embodiments, the sewage tank body of the sewage tank assembly 50 is accommodated in the accommodating cavity 14 of the sub-frame 10, and the clean water tank body of the clean water tank assembly 80 is arranged outside the accommodating cavity 14 of the sub-frame 10. The scraper groove 40 abuts against the cleaning member 62 of the cleaning mechanism 60 so that during the rotation of the cleaning member 62, the dirt on the cleaning member 62 is scraped into the scraper groove 40.

[0081] The above description is only part or preferred embodiments of the present invention. Neither the text nor the drawings can limit the scope of protection of the present invention. All equivalent structural transformations made by using the contents of the present invention specification and drawings under the overall concept of the present invention, or direct / indirect application in other related technical fields are included in the scope of protection of the present invention.

Claims

1. An automatic cleaning device for cleaning a surface to be cleaned, characterized in that: The automatic cleaning device comprises: a main frame, the main frame being used to mount at least one of a control module, a drive module, or a dust collection module of the automatic cleaning device; A secondary frame, the secondary frame is arranged on one side of the main frame and is movably connected to the main frame; a cleaning mechanism, the cleaning mechanism being disposed on a side of the sub-frame facing the surface to be cleaned and connected to the sub-frame; and a scraper groove, the scraper groove being provided on the secondary frame and abutting against the cleaning mechanism; The secondary frame can move relative to the main frame, so that the cleaning mechanism and the wiper groove can be lifted and lowered together with the secondary frame, thereby driving the cleaning mechanism and the wiper groove to approach or move away from the surface to be cleaned.

2. The automatic cleaning device according to claim 1, characterized in that: The cleaning mechanism comprises: a bracket, the bracket being arranged on a side of the sub-frame facing the surface to be cleaned; and a cleaning member, the cleaning member being arranged on the bracket and used for cleaning the surface to be cleaned; The wiper groove abuts against the cleaning member so that dirt on the cleaning member is scraped into the wiper groove during the rotation of the cleaning member.

3. The automatic cleaning device according to claim 1, characterized in that: The secondary frame and the main frame are movably connected in a manner that includes at least one of a hinge connection, a sliding connection, an elastic member connection, and a connecting rod connection.

4. The automatic cleaning device according to claim 3, characterized in that: The main frame is hinged to the secondary frame, and an extension portion is provided on one side of the main frame or the secondary frame facing the other, and the main frame or the secondary frame is hinged to the other through the extension portion; or The main frame is slidably connected to the secondary frame, the main frame is provided with a mounting portion, a sliding module is provided between the mounting portion and the secondary frame, the sliding module is connected to the mounting portion and the secondary frame, and the sliding module slides on the mounting portion to drive the secondary frame to slide relative to the main frame; or The main frame and the sub-frame are connected via an elastic member, and the automatic cleaning device further comprises the elastic member, one end of the elastic member is connected to the main frame, and the other end of the elastic member is connected to the sub-frame; or The main frame and the secondary frame are connected via a connecting rod. The automatic cleaning device further comprises the connecting rod, one end of the connecting rod is connected to the main frame, and the other end of the connecting rod is connected to the secondary frame.

5. The automatic cleaning device according to claim 1, characterized in that: The automatic cleaning device further comprises: a sewage tank assembly and / or a clean water tank assembly, wherein the sewage tank assembly and / or the clean water tank assembly are arranged on the sub-frame and rise and fall together with the sub-frame.

6. The automatic cleaning device according to claim 1, characterized in that: The automatic cleaning device further comprises: a sewage tank assembly, wherein the sewage tank assembly comprises a sewage tank body, and the sewage tank body is accommodated in the accommodating cavity of the sub-frame; and / or, The automatic cleaning device further comprises: a clean water tank assembly, wherein the clean water tank assembly comprises a clean water tank body, and the clean water tank body is arranged outside the accommodating cavity of the sub-frame.

7. The automatic cleaning device according to any one of claims 1 to 6, characterized in that: The automatic cleaning device further comprises a driving mechanism, which is connected to the sub-frame and is used to drive the sub-frame to move up and down so as to move the sub-frame closer to or away from the surface to be cleaned.

8. The automatic cleaning device according to claim 7, characterized in that: The driving mechanism comprises: a motor, wherein the motor is arranged on the main frame; a traction wheel connected to an output shaft of the motor; A rope, one end of which is wound around the traction wheel, and the other end of which is connected to the secondary frame.

9. The automatic cleaning device according to claim 8, characterized in that: The automatic cleaning device further comprises a mounting plate fixedly mounted above the secondary frame, wherein the mounting plate is provided with a mounting groove, and an end of the rope away from the traction wheel is embedded in the mounting groove and connected to the secondary frame.

10. The automatic cleaning device according to claim 9, characterized in that: A guide tube is provided in the installation groove, and one end of the rope away from the traction wheel passes through the guide tube and is connected to the sub-frame.

11. The automatic cleaning device according to claim 8, characterized in that: The automatic cleaning device also includes: a guide sleeve, the guide sleeve being arranged on the secondary frame; A guide post is provided at an end of the rope away from the traction wheel, and the guide post is slidably connected in the guide sleeve.

12. The automatic cleaning device according to claim 11, characterized in that: One end of the guide sleeve is closed, and the guide column includes a sliding portion and a clamping portion. During the sliding of the guide column in the guide sleeve, the sliding portion can slide out of the closed end of the guide sleeve, and the clamping portion cannot slide out of the closed end of the guide sleeve.

13. The automatic cleaning device according to claim 7, characterized in that: The driving mechanism includes: an electromagnetic push rod, one end of which is connected to the main frame, and the other end of which is connected to the sub-frame, and the extension and retraction of the electromagnetic push rod causes the sub-frame to move relative to the main frame; and / or, A reset piece is provided at the connection between the main frame and the secondary frame.

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