Window cleaning robot

Abstract

The utility model relates to a window cleaning robot which comprises a robot body, an adsorption assembly and a walking assembly. The adsorption assembly is arranged in the machine body and is constructed to form negative pressure between the machine body and the working surface, so that the window cleaning robot is adsorbed on the working surface; the walking assembly comprises a crawler belt, a driving unit, a belt wheel and a pressing piece, the belt wheel is arranged on the machine body and is configured to be controlled by the driving unit to drive the crawler belt to walk on the working face, and the pressing piece is arranged on the machine body and is configured to apply pre-tightening force towards the direction of the working face to the crawler belt.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the field of cleaning equipment, in particular to a window cleaning robot. BACKGROUND

[0002] With the continuous improvement of modern living standards, people's requirements for the quality of life are also getting higher and higher. Automated and intelligent devices are increasingly widely used in daily life. In recent years, intelligent devices such as intelligent sweeping robots or intelligent window cleaning robots have emerged. On the one hand, these intelligent robots can perform a large amount of cleaning work in a short time, saving people a lot of time. On the other hand, these intelligent devices can free people from tedious housework, so these intelligent devices are increasingly favored.

[0003] A new type of robot represented by a window cleaning robot has emerged. The window cleaning robot can not only help people clean indoor glass, but also can complete some high-difficulty outdoor high-altitude operations. When the intelligent window cleaning robot performs cleaning work, it moves on the glass by a traveling device and wipes and cleans the glass by using a cleaning cloth.

[0004] When the window cleaning robot cleans a relatively smooth working surface, it is easy to slip on the working surface due to the presence of a large amount of water stains, dust or mud formed by mixing of dust and water on the working surface. Lightly, it leads to missed wiping of the window cleaning robot, which cannot normally complete the cleaning task and affects the cleaning effect. Heavily, it leads to falling of the window cleaning robot, causing property loss, and even the risk of personnel injury. CONTENT OF THE INVENTION

[0005] The present disclosure provides a window cleaning robot to solve the problems in the prior art.

[0006] According to a first aspect of the present disclosure, a window cleaning robot is provided, comprising:

[0007] a body;

[0008] a suction assembly arranged in the body and configured to form a negative pressure between the body and a working surface to enable the window cleaning robot to be adsorbed on the working surface;

[0009] a traveling assembly comprising a track, a driving unit, a belt wheel and a pressing member, the belt wheel being arranged on the body and configured to be controlled by the driving unit to drive the track to travel on the working surface, and the pressing member being arranged on the body and configured to apply a pre-tightening force to the track in the direction of the working surface.

[0010] In one embodiment of the present disclosure, the pressing member comprises a pressing wheel configured to cooperate with the inner side of the track and a first elastic member configured to apply a pre-tightening force to the track in the direction of the working surface under the elastic force of the first elastic member.

[0011] In one embodiment of the present disclosure, the first elastic member is configured to set the pressure range between the pressing wheel and the track to 5N to 15N.

[0012] In one embodiment of the present disclosure, the pressing wheel is configured to have a movement stroke in the direction perpendicular to the working surface relative to the machine body through the first elastic member, and the movement stroke ranges from 3mm to 5mm.

[0013] In one embodiment of the present disclosure, the outer circumferential surface of the pressing wheel is a smooth surface to fit the inner surface of the track, or the inner surface of the track is provided with driven teeth, and the pressing wheel is provided with pressing wheel teeth engaged with the driven teeth.

[0014] In one embodiment of the present disclosure, the window-cleaning robot comprises at least two walking assemblies, and at least one pressing member is arranged in each walking assembly.

[0015] In one embodiment of the present disclosure, two belt wheels and one pressing member are arranged in each walking assembly, and the pressing member is arranged between the two belt wheels.

[0016] In one embodiment of the present disclosure, the window-cleaning robot is configured to be controlled at least by the walking assembly to move along the front side of the track.

[0017] The window-cleaning robot further comprises a wiping assembly arranged at least on the front side of the track.

[0018] The wiping assembly is configured to abut against the working surface to wipe off the liquid and dirt on the front side of the track during the movement of the window-cleaning robot.

[0019] In one embodiment of the present disclosure, the orthographic projection of the track in the movement direction of the window-cleaning robot is configured to be within the orthographic projection range of the wiping assembly in the movement direction of the window-cleaning robot.

[0020] In one embodiment of the present disclosure, the window-cleaning robot is configured to be controlled by the walking assembly to move along the front side and the rear side of the track, and the front side and the rear side of the track are both provided with the wiping assembly.

[0021] In one embodiment of the present disclosure, the wiper assembly comprises a wiper and a second elastic member, the wiper being configured to be pressed against the working surface under the elastic force of the second elastic member.

[0022] In one embodiment of the present disclosure, the second elastic member is configured to make the pressure range between the wiper and the working surface be 0.5N to 3N.

[0023] In one embodiment of the present disclosure, the outer surface of the track is provided with a drainage groove, the drainage groove being configured to make the liquid on the working surface flow along the drainage groove to the axial two sides of the track during the movement of the window-cleaning robot along the working surface.

[0024] In one embodiment of the present disclosure, the width of the drainage groove ranges from 0.2mm to 1mm, and the depth ranges from 0.2mm to 1mm.

[0025] In the working process of the window-cleaning robot of the present disclosure, the suction assembly can form a negative pressure between the body and the working surface, so as to make the window-cleaning robot adsorb on the working surface; the driving unit can drive the pulley to rotate, and the pulley can drive the track to walk on the working surface when rotating, thereby driving the window-cleaning robot of the present disclosure to walk on the working surface. In the process of walking on the working surface, the cleaning assembly of the present disclosure can clean the working surface.

[0026] Since the pressing member of the walking assembly is arranged on the body, it can apply a pre-tightening force to the track towards the working surface direction, so as to effectively increase the pressure between the track and the working surface, and the total sliding friction between the track and the working surface can be effectively improved, thereby effectively avoiding the track from slipping on the working surface, preventing the window-cleaning robot from falling off the working surface, and effectively ensuring the normal cleaning work of the window-cleaning robot on the working surface.

[0027] Other features of the present disclosure and its advantages will become apparent from the following detailed description of exemplary embodiments thereof, with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0029] Figure 1 is a cross-sectional view of a window-cleaning robot provided by an embodiment of the present disclosure;

[0030] Figure 2 is a partial cross-sectional view of a window-cleaning robot provided by an embodiment of the present disclosure;

[0031] Figure 3FIG. 1 is a perspective view of a track provided by an embodiment of the present disclosure.

[0032] Figures 1 to 3 The one-to-one correspondence between the names of various components and the reference numerals is as follows:

[0033] 1, body; 2, walking assembly; 21, track; 211, driven tooth; 212, drainage groove; 22, carrier wheel; 221, driving wheel; 222, driven wheel; 23, pressing member; 231, pressing wheel; 232, first elastic member; 3, scraping assembly; 31, scraping member; 32, second elastic member. DETAILED DESCRIPTION

[0034] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions, and numerical values set forth in these embodiments are not limiting to the scope of the present disclosure unless specifically stated otherwise. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Thus, other examples of the exemplary embodiments can have different values.

[0035] A number of specific details are set forth in the following description in order to provide a thorough understanding of the present disclosure. However, the present disclosure can be practiced according to many different embodiments than those described herein without departing from the scope of the present disclosure, and it should be understood that the present disclosure is not limited to the specific embodiments described herein. Techniques, methods, and apparatuses known to those of ordinary skill in the relevant art can not be discussed in detail herein, but should be considered as part of the description, where appropriate.

[0036] The terminology used in the one or more embodiments of the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the one or more embodiments of the present disclosure. As used in the one or more embodiments of the present disclosure and the accompanying claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0037] It should be understood that, although the terms second, first, etc. can be employed in describing various information in one or more embodiments of the present disclosure, such information should not be limited to these terms. These terms are only used to differentiate one type of information from another type of information. For example, one can be referred to as a second without departing from the scope of one or more embodiments of the present disclosure, similarly, one can also be referred to as a first. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "upon" or "in response to the determination." In this document, "upper," "lower," "front," "back," "left," "right," and the like are used to denote relative positions and orientations for the relevant parts shown in the drawings, and are not limiting of the absolute positions of the relevant parts. In this document, "equal," "same," and the like are not strictly limited in the mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and allowed in manufacturing or use. Unless otherwise stated, the numerical ranges herein include not only the entire range within the two endpoints, but also several sub-ranges contained therein.

[0038] The present disclosure provides a window-cleaning robot, which is mainly used for cleaning a working surface extending in a vertical direction, such as a window or a glass curtain wall. Specifically, the window-cleaning robot at least comprises a body, a suction assembly and a walking assembly; wherein the suction assembly is arranged in the body and is configured to form a negative pressure between the body and the working surface, so that the window-cleaning robot is adsorbed on the working surface.

[0039] The walking assembly comprises a track belt, a driving unit, a belt wheel and a pressing member. The belt wheel is arranged on the body and is configured to be controlled by the driving unit to drive the track belt to walk on the working surface. The pressing member is arranged on the body and is configured to apply a pre-tightening force to the track belt in the direction of the working surface.

[0040] It can be understood that the window-cleaning robot of the present disclosure further comprises a cleaning assembly for cleaning the working surface. In the working process of the window-cleaning robot of the present disclosure, the suction assembly can form a negative pressure between the body and the working surface, so that the window-cleaning robot is adsorbed on the working surface; the driving unit can drive the belt wheel to rotate, and the belt wheel can drive the track belt to walk on the working surface when rotating, thereby driving the window-cleaning robot of the present disclosure to walk on the working surface. The window-cleaning robot of the present disclosure can clean the working surface during walking on the working surface.

[0041] Since the pressing member of the walking assembly is arranged on the body and can apply a pre-tightening force to the track belt in the direction of the working surface, the pressure between the track belt and the working surface can be effectively increased, and the total sliding friction between the track belt and the working surface can be effectively improved, thereby effectively avoiding the track belt from slipping on the working surface, preventing the window-cleaning robot from falling off the working surface, and effectively ensuring the normal cleaning work of the window-cleaning robot on the working surface.

[0042] For the convenience of understanding, the specific structure of the window-cleaning robot of the present disclosure and its working principle will be described in detail below with reference to one embodiment. Figures 1 to 3

[0043] As shown in Figure 1 , the present disclosure provides a window-cleaning robot, which is mainly used for cleaning a working surface extending in a vertical direction, such as a window or a glass curtain wall. Specifically, the window-cleaning robot at least comprises a body 1, a suction assembly and a walking assembly 2; wherein the suction assembly is arranged in the body 1 and is configured to form a negative pressure between the body 1 and the working surface, so that the window-cleaning robot is adsorbed on the working surface.

[0044] As shown in Figure 2 , the walking assembly 2 comprises a track 21, a driving unit, a pulley 22 and a pressing member 23, the pulley 22 is arranged on the body 1 and is configured to be controlled by the driving unit to drive the track 21 to walk on the working surface, and the pressing member 23 is arranged on the body 1 and is configured to apply a pre-tightening force to the track 21 in the direction of the working surface.

[0045] It can be understood that the window-cleaning robot of the present disclosure also comprises a cleaning assembly for cleaning the working surface. In the working process of the window-cleaning robot of the present disclosure, the suction assembly can form a negative pressure between the body 1 and the working surface, so that the window-cleaning robot is adsorbed on the working surface; the driving unit can drive the pulley 22 to rotate, and the pulley 22 can drive the track 21 to walk on the working surface when it rotates, thereby driving the window-cleaning robot of the present disclosure to walk on the working surface. In the process of walking on the working surface, the cleaning assembly of the present disclosure can clean the working surface.

[0046] Since the pressing member 23 of the walking assembly 2 is arranged on the body 1 and can apply a pre-tightening force to the track 21 in the direction of the working surface, the track 21 is pressed on the working surface, effectively increasing the pressure between the track 21 and the working surface, and since the pressure between the track 21 and the working surface is increased, the total sliding friction between the track 21 and the working surface can be effectively improved, thereby effectively preventing the track 21 from slipping on the working surface, preventing the window-cleaning robot from falling off the working surface, and effectively ensuring that the window-cleaning robot can normally perform cleaning work on the working surface.

[0047] Specifically, as shown in Figure 2 , in one embodiment of the present disclosure, the pressing member 23 comprises a pressing wheel 231 and a first elastic member 232, the pressing wheel 231 is configured to cooperate with the inner side surface of the track 21 and applies a pre-tightening force to the track 21 in the direction of the working surface under the elastic force of the first elastic member 232.

[0048] ​That is, when the window-cleaning robot of the present disclosure is adsorbed on the working surface, one end of the compression wheel 231 is matched with the inner side surface of the track 21, and the other end is matched with the first elastic member 232, and the first elastic member 232 is in a compressed state, so that the compression wheel 231 can be applied with elastic force, and the compression wheel 231 will apply pre-tightening force to the track 21 in the direction of the working surface under the action of the elastic force of the first elastic member 232, so as to compress the track 21 on the working surface.

[0049] Specifically, in one embodiment of the present disclosure, the first elastic member 232 is configured to make the pressure range between the compression wheel 231 and the track 21 be 5N to 15N, when the first elastic member 232 is configured to make the pressure between the compression wheel 231 and the track 21 be in the range of 5N to 15N, it can not only effectively increase the pressure between the track 21 and the working surface, thereby increasing the total sliding friction between the track 21 and the working surface, avoiding the track 21 from slipping, but also can avoid the situation that the track 21 cannot closely adhere to the working surface in other areas due to the excessive pressure between the compression wheel 231 and the track 21, and the body 1 is lifted up by the compression wheel 231, and the window-cleaning robot appears the situation of air leakage, effectively ensuring that the window-cleaning robot can be tightly adsorbed on the working surface.

[0050] As shown in Figure 2 , in one embodiment of the present disclosure, the compression wheel 231 is configured to have a movement stroke in the direction perpendicular to the working surface relative to the body 1 through the first elastic member 232, and the range of the movement stroke is 3mm to 5mm. Since the compression wheel 231 can move in the direction perpendicular to the working surface relative to the body 1 through the first elastic member 232, and the range of the movement stroke is 3mm to 5mm, it can ensure that the track 21 of the present disclosure can smoothly pass through the small-amplitude undulating area on the working surface, and the compression wheel 231 always keeps the state of compressing the track 21 on the working surface.

[0051] As shown in Figure 2 and Figure 3 , in one embodiment of the present disclosure, the inner surface of the track 21 is provided with a driven tooth 211 to engage with the driving tooth on the outer surface of the pulley 22. In this way, when the pulley 22 rotates, the track 21 can be driven to rotate through the mutually engaged driving tooth and driven tooth 211. As shown in Figure 2 , in one embodiment of the present disclosure, one of the pulleys 22 can be a driving pulley 221, and the other can be a driven pulley 222. While in another embodiment of the present disclosure, the pulleys 22 can all be driving pulleys 221.

[0052] As shown in Figure 2As shown, in one embodiment of this disclosure, the outer peripheral surface of the pressure roller 231 is smooth to conform to the inner surface of the track 21. Because the outer peripheral surface of the pressure roller 231 is smooth to conform to the inner surface of the track 21, the pressure roller 231 can be kept in contact with at least one driven tooth 211 on the inner surface of the track 21 during the rotation of the track 21, thereby applying pressure to the track 21.

[0053] In another embodiment of this disclosure, the pressure wheel 231 is provided with pressure wheel teeth that cooperate with the driven tooth 211 so as to mesh with the driven tooth 211. In this way, it can be ensured that the pressure wheel 231 meshes with the driven tooth 211 through the pressure wheel teeth, and it can also be ensured that the pressure wheel 231 always applies pressure to the track 21 during the rotation of the track 21.

[0054] The disclosed window cleaning robot uses a pressure wheel 231 that applies a preload force towards the working surface to the track 21 under the elastic force provided by the first elastic element 232. This allows the pressure wheel teeth of the pressure wheel 231 to mesh stably with the driven teeth 211. Compared to fixing the pressure wheel 231 to the body 1, this avoids the slippage problem between the pressure wheel teeth and the driven teeth 211 caused by the pressure wheel 231's inability to continuously apply preload force to the track 21, thus ensuring the stable movement of the window cleaning robot.

[0055] In one embodiment of this disclosure, the window cleaning robot includes at least two walking components 2, and each walking component 2 is provided with at least one clamping member 23.

[0056] It is understood that the window cleaning robot of this disclosure may include only two walking components 2, and the walking and turning of the window cleaning robot on the working surface can be controlled by controlling the rotation speed and rotation direction of the tracks 21 of the two walking components 2; and, at least one clamping member 23 is provided in each walking component 2, thereby ensuring that there are at least three support points between each walking component 2 and the working surface, thereby effectively improving the sliding friction between each walking component 2 and the working surface.

[0057] In another embodiment of this disclosure, the window cleaning robot may include multiple walking components 2, with a similar walking principle, which will not be described in detail here.

[0058] like Figure 2 As shown, in one embodiment of this disclosure, each walking assembly 2 is provided with two pulleys 22 and a clamping member 23, with the clamping member 23 disposed between the two pulleys 22. This allows each walking assembly 2 to have three support points with respect to the working surface, and these three support points are evenly distributed, thereby ensuring that the friction between the track 21 and the working surface is relatively balanced at the three support points, thus ensuring that the track 21 is subjected to balanced force overall.

[0059] As shown in the drawings, Figure 1 In one embodiment of the present disclosure, the window-cleaning robot is configured to be controlled to move along the front side of the track 21 by the walking assembly 2; the window-cleaning robot further comprises a squeegee assembly 3 arranged at least on the front side of the track 21, and the squeegee assembly 3 is configured to abut against the working surface to squeegee the liquid and dirt on the front side of the track 21 during the movement of the window-cleaning robot.

[0060] That is, during the movement of the window-cleaning robot of the present disclosure, the squeegee assembly 3 can squeegee the liquid and dirt on the front side of the track 21, so as to avoid the liquid and dirt on the working surface entering the area below the track 21 as much as possible, and reduce the situation that the track 21 slips due to the existence of liquid and dirt between the track 21 and the working surface.

[0061] Further, in one embodiment of the present disclosure, the orthographic projection of the track 21 in the movement direction of the window-cleaning robot is configured to be located within the orthographic projection range of the squeegee assembly 3 in the movement direction of the window-cleaning robot, that is, the squeegee assembly 3 is configured to completely cover the movement range of the track 21 in the movement direction. Since the squeegee assembly 3 completely covers the movement range of the track 21 in the movement direction, it can be ensured that the area where the track 21 moves during the movement of the window-cleaning robot has been squeegeed by the squeegee assembly 3 in advance, so as to avoid the liquid and dirt on the working surface entering the area below the track 21, and prevent the situation that the track 21 slips due to the existence of liquid and dirt between the track 21 and the working surface.

[0062] As shown in the drawings, Figure 1 In one embodiment of the present disclosure, the window-cleaning robot is configured to be controlled to move along the front side and the rear side of the track 21 by the walking assembly 2; the front side and the rear side of the track 21 are both provided with the squeegee assembly 3. Since the window-cleaning robot can be controlled to move along the front side and the rear side of the track 21 by the walking assembly 2, and the front side and the rear side of the track 21 are both provided with the squeegee assembly 3, it can be ensured that the squeegee assembly 3 can squeegee the liquid and dirt on the front side of the track 21 in the movement direction when the window-cleaning robot moves in any direction, so as to prevent the liquid and dirt from entering the area below the track 21.

[0063] Specifically, as shown in the drawings, Figure 1 In one embodiment of the present disclosure, the squeegee assembly 3 comprises a squeegee 31 and a second elastic member 32, and the squeegee 31 is configured to be pressed against the working surface under the elastic force of the second elastic member 32. In this way, it can be ensured that the bottom edge of the squeegee 31 can effectively adhere to the working surface, so as to ensure that the squeegee assembly 3 can effectively squeegee the liquid and dirt on the front side of the track 21 in the movement direction.

[0064] Further, in one embodiment of the present disclosure, the second elastic member 32 is configured to make the pressure between the wiper 31 and the working surface range from 0.5 N to 3 N.

[0065] In this way, the bottom edge of the wiper 31 can be effectively attached to the working surface, and the wiper 31 will not lift the body 1, and the track 21 cannot be tightly attached to the working surface, and the window cleaning robot will not be in the case of air leakage, effectively ensuring that the window cleaning robot can be tightly attached to the working surface.

[0066] As shown in the drawings, Figure 3 In one embodiment of the present disclosure, the outer surface of the track 21 is provided with a drainage groove 212, which is configured to make the liquid on the working surface flow along the drainage groove 212 to the axial sides of the track 21 during the movement of the window cleaning robot along the working surface. By providing the drainage groove 212 on the outer surface of the track 21, when the track 21 rolls over the liquid on the working surface during the movement of the window cleaning robot along the working surface, the liquid on the working surface flows along the drainage groove 212 to the axial sides of the track 21, thereby being discharged to the outside of the track 21, reducing the amount of liquid between the track 21 and the working surface, preventing the formation of a water film between the track 21 and the working surface, thereby increasing the total sliding friction between the track 21 and the working surface.

[0067] Specifically, as shown in the drawings, Figure 3 In one embodiment of the present disclosure, the drainage groove 212 includes at least one first drainage groove extending axially on the outer surface of the track 21, and the first drainage groove is configured to extend axially to the axial ends of the track 21.

[0068] Since the drainage groove 212 includes at least one first drainage groove extending axially on the outer surface of the track 21, and the first drainage groove extends axially to the axial ends of the track 21, when the track 21 rolls over the liquid on the working surface, the liquid on the working surface can flow along the first drainage groove to the axial sides of the track 21, thereby being discharged to the outside of the track 21.

[0069] In one embodiment of the present disclosure, the number of first drainage grooves is at least 10, and each first drainage groove is configured to be uniformly distributed along the circumference of the outer surface of the track 21. In this way, the first drainage groove can be provided on the circumference of the outer surface of the track 21, thereby effectively ensuring the drainage performance of the track 21.

[0070] For example, as shown in the drawings, Figure 3 In one specific embodiment of the present disclosure, the number of first drainage grooves is 40, and each first drainage groove is uniformly distributed along the circumference of the outer surface of the track 21, and through actual measurement, the drainage performance of the track 21 can be effectively ensured, and the processing cost of the first drainage groove can be reduced.

[0071] In another embodiment of the present disclosure, the drain groove 212 includes at least one second drain groove extending circumferentially on the outer surface of the track 21, and the second drain groove is configured to communicate with each of the first drain grooves.

[0072] Since the drain groove 212 includes at least one second drain groove extending circumferentially on the outer surface of the track 21, and the second drain groove is configured to communicate with each of the first drain grooves, when the track 21 rolls on the liquid on the working surface, the liquid at the second drain groove can flow along the second drain groove to the first drain groove, and then flow along the first drain groove to the two axial sides of the track 21, thereby being discharged to the outside of the track 21. It can be understood that the number of second drain grooves can be set as needed, which is not limited herein.

[0073] In one embodiment of the present disclosure, the width of the drain groove 212 ranges from 0.2 mm to 1 mm, and the depth ranges from 0.2 mm to 1 mm. When the width of the drain groove 212 ranges from 0.2 mm to 1 mm, and the depth ranges from 0.2 mm to 1 mm, the drainage performance of the drain groove 212 can be effectively guaranteed, and the contact area between the track 21 and the working surface will not be greatly reduced.

[0074] Specifically, in one embodiment of the present disclosure, the width and depth of the drain groove 212 are both 0.5 mm. It has been measured that when the width and depth of the drain groove 212 are both 0.5 mm, the drainage performance of the track 21 can be effectively guaranteed, and the contact area between the track 21 and the working surface can be guaranteed.

[0075] In one embodiment of the present disclosure, the outer surface of the track 21 is configured to be provided with anti-skid lines. By providing the anti-skid lines on the outer surface of the track 21, the size of the sliding friction between the track 21 and the working surface can also be effectively improved.

[0076] It can be understood that the total sliding friction between the track 21 and the working surface can also be improved by increasing the contact area between the track 21 and the working surface. For example, in one embodiment of the present disclosure, under the condition that the size of the machine body 1 allows, the width of the track 21 is increased from 15 mm to 18 mm, which effectively increases the contact area between the track 21 and the working surface by 20%.

[0077] Application scenarios

[0078] The present disclosure provides a window cleaning robot, which is mainly used for cleaning windows, glass curtain walls and other working surfaces extending in the vertical direction. Specifically, the window cleaning robot at least includes a machine body 1, a suction assembly and a walking assembly 2; wherein the suction assembly is arranged in the machine body 1, and is configured to form a negative pressure between the machine body 1 and the working surface, so that the window cleaning robot is adsorbed on the working surface.

[0079] The walking assembly 2 comprises a track 21, a driving unit, a belt wheel 22 and a pressing member 23. The belt wheel 22 is arranged on the body 1 and is configured to be driven by the driving unit to drive the track 21 to walk on the working surface. The pressing member 23 is arranged on the body 1 and is configured to apply a pre-tightening force to the track 21 in the direction of the working surface.

[0080] It can be understood that the window-cleaning robot of the present disclosure further comprises a cleaning assembly for cleaning the working surface. During the working process of the window-cleaning robot of the present disclosure, the suction assembly can form a negative pressure between the body 1 and the working surface, so that the window-cleaning robot is adsorbed on the working surface. The driving unit can drive the belt wheel 22 to rotate, and the belt wheel 22 can drive the track 21 to walk on the working surface when rotating, thereby driving the window-cleaning robot of the present disclosure to walk on the working surface. During the walking process of the window-cleaning robot of the present disclosure on the working surface, the cleaning assembly can be used to clean the working surface.

[0081] Since the pressing member 23 of the walking assembly 2 is arranged on the body 1, it can apply a pre-tightening force to the track 21 in the direction of the working surface, thereby effectively increasing the pressure between the track 21 and the working surface. The pressure between the track 21 and the working surface can effectively increase the total sliding friction between the track 21 and the working surface, thereby effectively preventing the track 21 from slipping on the working surface, preventing the window-cleaning robot from falling off the working surface, and effectively ensuring that the window-cleaning robot can normally perform cleaning work on the working surface.

[0082] The above has described various embodiments of the present disclosure, and the above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and changes are obvious to those skilled in the art without departing from the scope and spirit of the described embodiments. The choice of terms used herein is intended to best explain the principles, practical applications, or technical improvements in the art, or to enable other ordinary skilled persons in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A window cleaning robot, characterized by, The window cleaning robot comprises: a machine body (1); an adsorption assembly arranged in the machine body (1) and configured to form a negative pressure between the machine body (1) and a working surface so as to adsorb the window cleaning robot on the working surface; a walking assembly (2) comprising a track (21), a driving unit, a belt wheel (22) and a pressing member (23), the belt wheel (22) being arranged on the machine body (1) and configured to be controlled by the driving unit to drive the track (21) to walk on the working surface, and the pressing member (23) being arranged on the machine body (1) and configured to apply a pre-tightening force to the track (21) in the direction of the working surface.

2. The window-cleaning robot according to claim 1, characterized in that The pressing member (23) comprises a pressing wheel (231) and a first elastic member (232), the pressing wheel (231) being configured to cooperate with an inner side surface of the track (21) and to apply the pre-tightening force to the track (21) in the direction of the working surface under the elastic force of the first elastic member (232).

3. The window-cleaning robot according to claim 2, characterized in that The first elastic member (232) is configured to make the pressure range between the pressing wheel (231) and the track (21) be 5N to 15N.

4. The window-cleaning robot according to claim 2, characterized in that The pressing wheel (231) is configured to have a movement stroke in the direction perpendicular to the working surface relative to the machine body (1) through the first elastic member (232), and the movement stroke ranges from 3mm to 5mm.

5. The window cleaning robot according to claim 2, characterized in that, An outer circumferential surface of the pressing wheel (231) is a smooth surface to be fitted with an inner surface of the track (21), or an inner surface of the track (21) is provided with a driven tooth (211), and the pressing wheel (231) is provided with a pressing wheel tooth engaged with the driven tooth (211).

6. The window-cleaning robot according to claim 1, characterized in that, The window cleaning robot comprises at least two walking assemblies (2), and at least one pressing member (23) is arranged in each walking assembly (2).

7. The window-cleaning robot according to claim 1, characterized in that, In each walking assembly (2), two belt wheels (22) and one pressing member (23) are arranged, and the pressing member (23) is arranged between the two belt wheels (22).

8. The window cleaning robot according to any one of claims 1 to 7, characterized in that, The window cleaning robot is configured to be controlled at least by the walking assembly (2) to move along the front side of the track (21). The window cleaning robot further comprises a wiping assembly (3) arranged at least on the front side of the track (21). The wiping assembly (3) is configured to abut against the working surface to wipe off liquid and dirt on the front side of the track (21) during movement of the window cleaning robot.

9. The window-cleaning robot according to claim 8, characterized in that A projection of the track (21) in the movement direction of the window cleaning robot is configured to be located in the projection range of the wiping assembly (3) in the movement direction of the window cleaning robot.

10. The window-cleaning robot according to claim 8, characterized in that, The window cleaning robot is configured to be controlled by the walking assembly (2) to move along the front side and the rear side of the track (21), and the front side and the rear side of the track (21) are both provided with the wiping assembly (3).

11. The window-cleaning robot according to claim 8, characterized in that The wiper assembly (3) comprises a wiper (31) configured to be pressed against the working surface under the elastic force of a second elastic member (32).

12. The window-cleaning robot according to claim 11, characterized in that The second elastic member (32) is configured to set the pressure range between the wiper (31) and the working surface to 0.5N to 3N.

13. The window cleaning robot according to any one of claims 1 to 7, characterized in that, An outer surface of the track (21) is provided with a drainage groove (212) configured to cause liquid on the working surface to flow along the drainage groove (212) to both axial sides of the track (21) during movement of the window-cleaning robot along the working surface.

14. The window-cleaning robot according to claim 13, characterized in that The drainage groove (212) has a width ranging from 0.2mm to 1mm and a depth ranging from 0.2mm to 1mm.

15. The window cleaning robot according to any one of claims 1 to 7, characterized in that, The outer surface of the track (21) is configured to be provided with anti-skid lines.

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