Cleaning device

Abstract

The application belongs to the technical field of cleaning robots, and particularly relates to a cleaning device, which comprises a machine body, the front end of the machine body is provided with a front wall, a first side wall and a second side wall; a front anti-collision structure, which comprises a front anti-collision beam, a connecting assembly and an elastic assembly, the front anti-collision beam comprises a first protection section, a second protection section and a third protection section, the first protection section is arranged opposite to the front wall, the second protection section and the third protection section are arranged opposite to the first side wall and the second side wall respectively, the connecting assembly comprises a first elastic mounting component and a second elastic mounting component, the front anti-collision beam is movably mounted on the front end of the machine body through the first and second elastic mounting components, the elastic assembly is mounted between the machine body and the front anti-collision beam, and the elastic assembly provides elastic force to the front anti-collision beam. The cleaning device is applied to solve the problem that the end of a rolling brush cannot be close to the edge of the machine body in the cleaning device with a circular front end in the prior art, so that the end of the rolling brush cannot be close to the edge of a wall for cleaning, and the use experience of a user is affected.

Description

Technical Field

[0001] This application belongs to the field of cleaning robot technology, and in particular relates to a cleaning device. Background Technology

[0002] The front end of existing cleaning devices is generally in a traditional circular shape, and correspondingly, the front bumper beam of existing cleaning devices is also designed in a circular shape.

[0003] When existing cleaning devices use a roller brush that rotates around a horizontal axis, to maximize the brush's length, the circular front end must be moved to the rear of the machine for assembly. Because interference can easily occur between the roller brush and the robot's wheels, the brush length cannot closely approximate the robot's width, and the brush tip cannot get close to the edge of the machine. When cleaning wall edges, the brush tip cannot reach the edge for cleaning, leaving a large area uncleaned and negatively impacting the user experience. Summary of the Invention

[0004] The purpose of this application is to provide a cleaning device that solves the problem in the prior art where the end of the roller brush in a circular front-end cleaning device cannot get close to the edge of the device body, resulting in the roller brush end being unable to reach the edge of the wall for cleaning, thus affecting the user experience.

[0005] To achieve the above objectives, the technical solution adopted in this application is: a cleaning device, comprising:

[0006] The fuselage has a front wall at its front end along the direction of travel and a first side wall and a second side wall connected to both ends of the front wall, and the extension directions of the first side wall and the second side wall along the direction of travel are both perpendicular to the extension direction of the front wall.

[0007] The front anti-collision structure includes a front anti-collision beam, a connecting assembly, and an elastic assembly. The front anti-collision beam includes a first protective section, a second protective section, and a third protective section. The second and third protective sections are respectively connected to the two ends of the first protective section. The first protective section is positioned directly opposite the front wall. The second and third protective sections are respectively positioned directly opposite the first side wall and the second side wall. The connecting assembly includes a first elastic mounting member and a second elastic mounting member. The first and second elastic mounting members are respectively mounted on the first and second side walls. The front anti-collision beam is movably mounted to the front end of the fuselage via the first and second elastic mounting members. The elastic assembly is installed between the fuselage and the front anti-collision beam. The elastic assembly provides elastic force to the front anti-collision beam when it is subjected to external force.

[0008] In some embodiments of this application, the cleaning device further includes a side scraper, which is detachably mounted on a first side wall and / or a second side wall. One end of the side scraper, away from the body, protrudes from the front bumper beam. The side scraper is used to scrape away small pieces of trash and debris from the edge of the wall.

[0009] In some embodiments of this application, the first elastic mounting component includes a first connecting rod and a first elastic element, and the second elastic mounting component includes a second connecting rod and a second elastic element. Both the first connecting rod and the second connecting rod are rotatably mounted on the fuselage. The first end of the first connecting rod protrudes through one of the first sidewall and the second sidewall, and the first end of the second connecting rod protrudes through the other of the first sidewall and the second sidewall. The first elastic element is installed between the first connecting rod and the fuselage, and the second elastic element is installed between the second connecting rod and the fuselage. The front anti-collision beam has a first locking part and a second locking part on the inner sidewall facing the fuselage. The first end of the first connecting rod and the first end of the second connecting rod are respectively locked into the first locking part and the second locking part. The first elastic element provides elastic force to cause the first end of the first connecting rod to abut against one of the second guard section and the third guard section, and the second elastic element provides elastic force to cause the first end of the second connecting rod to abut against the other of the second guard section and the third guard section.

[0010] In some embodiments of this application, the cleaning device further includes a controller, which is provided with a first trigger switch and a second trigger switch. The second end of the first connecting rod away from the front bumper beam extends to one of the first trigger switch and the second trigger switch, and the second end of the second connecting rod away from the front bumper beam extends to the other of the first trigger switch and the second trigger switch. The second end of the first connecting rod and / or the second end of the second connecting rod respectively trigger the first trigger switch and the second trigger switch when the front bumper beam is subjected to an external force.

[0011] In some embodiments of this application, the first protective section is provided with a positioning protrusion on the inner sidewall facing the body, and the front wall of the body is provided with a positioning hole, and the positioning protrusion can be movably inserted into the positioning hole.

[0012] In some embodiments of this application, the end of the positioning protrusion is provided with a hook, and the wall of the positioning hole is provided with a stop protrusion. The stop protrusion is hooked and engaged with the hook to prevent the positioning protrusion from falling out of the positioning hole.

[0013] In some embodiments of this application, the elastic component includes a first elastic structure, which is mounted on the front wall and provides elasticity to the first protective section when the first protective section is subjected to an external force.

[0014] In some embodiments of this application, the first elastic structure includes a first elastic member and a first buffer pad. The force-applying end of the first elastic member is connected to the inner sidewall of the first protective section facing the fuselage, and the first buffer pad is spaced apart from the inner sidewall of the first protective section.

[0015] In some embodiments of this application, the elastic component further includes a second elastic structure and a third elastic structure. The second elastic structure is installed on one of the first sidewall and the second sidewall, and the third elastic structure is installed on the other of the first sidewall and the second sidewall. The second elastic structure provides elasticity when one of its corresponding second and third protective sections is subjected to an external force, and the third elastic structure provides elasticity when the other of its corresponding second and third protective sections is subjected to an external force.

[0016] In some embodiments of this application, both the second elastic structure and the third elastic structure include a second elastic member and a second buffer pad; the force-applying end of the second elastic member of the second elastic structure is connected to one of its corresponding second and third protective sections, and the second buffer pad of the second elastic structure is spaced apart from one of its corresponding second and third protective sections; the force-applying end of the second elastic member of the third elastic structure is connected to the other of its corresponding second and third protective sections, and the second buffer pad of the second elastic structure is spaced apart from the other of its corresponding second and third protective sections.

[0017] This application has at least the following beneficial effects:

[0018] The front end of the cleaning device of this application is designed in a square shape, consisting of a front wall, a first side wall, and a second side wall. Specifically, the extension directions of the first and second side walls along the travel direction are substantially perpendicular to the extension direction of the front wall. Furthermore, a suitable square-shaped front bumper structure protects the front wall, first side wall, and second side wall of the device. That is, the front bumper beam of the front bumper structure includes a first guard section, a second guard section, and a third guard section. The first guard section is positioned opposite the front wall, and the second and third guard sections are respectively positioned opposite the first and second side walls. When the front bumper beam is subjected to external force, an elastic component positioned between the front bumper beam and the device body provides elastic force to the front bumper beam. Since the front bumper beam is movably mounted to the front end of the device body via the first and second elastic mounting components of the connecting assembly, it can buffer the external force received by the front bumper beam and allow the front bumper beam to return to its original position relative to the device body after the external force is removed, effectively protecting the front end of the device body. Therefore, in this application, the front end of the cleaning device adopts a square structure, which helps to increase the length of the roller brush, allowing both ends of the roller brush mounted on the front end of the machine body to be as close as possible to the first and second side walls. In this way, when the roller brush cleans the wall edges, the ends of the roller brush can be as close to the wall edges as possible, thereby improving the cleaning effect and enhancing the user experience. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the cleaning device according to an embodiment of this application after assembly;

[0021] Figure 2 This is an exploded view of the cleaning device according to an embodiment of this application. Figure 1 ;

[0022] Figure 3 This is an exploded view of the cleaning device according to an embodiment of this application. Figure 2 ;

[0023] Figure 4 This is a schematic diagram of the front bumper beam in the cleaning device of this application embodiment. Figure 1 ;

[0024] Figure 5 for Figure 4 Enlarged structural diagram at point A;

[0025] Figure 6 This is a schematic diagram of the front bumper beam in the cleaning device of this application embodiment. Figure 2 .

[0026] The following are the labeling elements in the figure:

[0027] 10. Fuselage; 11. First side wall; 12. Second side wall; 13. Front wall; 14. Positioning hole; 15. Stop protrusion;

[0028] 20. Front bumper structure; 21. Front bumper beam; 211. First guard section; 212. Second guard section; 213. Third guard section; 214. Positioning protrusion; 215. Hook; 22. First elastic mounting component; 221. First connecting rod; 223. First elastic element; 22'. Second elastic mounting component; 222. Second connecting rod; 224. Second elastic element; 231. First elastic structure; 2311. First elastic element; 2312. First buffer pad; 232. Second elastic structure; 233. Third elastic structure; 2331. Second elastic element; 2332. Second buffer pad; 24. First locking part; 25. Second locking part; 26. First clearance hole; 27. Second clearance hole;

[0029] 30. Side scraper;

[0030] 41. Forward radar; 42. Lateral radar. Detailed Implementation

[0031] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0032] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0033] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0034] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0035] like Figures 1 to 3 As shown, the cleaning device provided in the embodiments of this application includes a body 10 and a front anti-collision structure 20. The front end of the body 10 along the travel direction has a front wall 13 and a first side wall 11 and a second side wall 12 respectively connected to both ends of the front wall 13, and the extension directions of the first side wall 11 and the second side wall 12 along the travel direction are both perpendicular to the extension direction of the front wall 13. The front anti-collision structure 20 includes a front anti-collision beam 21, a connecting assembly, and an elastic assembly. Figure 4 and Figure 6 As shown, the front bumper beam 21 includes a first guard section 211, a second guard section 212, and a third guard section 213, with the second guard section 212 and the third guard section 213 respectively connected to both ends of the first guard section 211. Figures 1 to 3As shown, the first protective section 211 is positioned directly opposite the front wall 13, and the second protective section 212 and the third protective section 213 are positioned directly opposite the first side wall 11 and the second side wall 12, respectively. Figure 2 As shown, the connecting assembly includes a first elastic mounting member 22 and a second elastic mounting member 22'. The first elastic mounting member 22 is mounted on one of the first sidewall 11 and the second sidewall 12, and the second elastic mounting member 22' is mounted on the other of the first sidewall 11 and the second sidewall 12. The front bumper beam 21 is movably mounted to the front end of the fuselage 10 via the first elastic mounting member 22 and the second elastic mounting member 22'. In this cleaning device, the elastic component is installed between the fuselage 10 and the front bumper beam 21, and the elastic component provides elastic force to the front bumper beam 21 when it is subjected to an external force.

[0036] The front end of the cleaning device 10 of this application is designed as a square shape consisting of a front wall 13, a first side wall 11, and a second side wall 12, wherein the extension direction of the first side wall 11 and the second side wall 12 along the travel direction is substantially perpendicular to the extension direction of the front wall 13. Furthermore, a suitable square-shaped front anti-collision structure 20 is used to protect the front wall 13, the first side wall 11, and the second side wall 12 of the device 10. Specifically, the front anti-collision beam 21 of the front anti-collision structure 20 includes a first protective section 211, a second protective section 212, and a third protective section 213. The first protective section 211 is directly opposite the front wall 13, and the second protective section 212 and the third protective section 213 are respectively directly opposite the first side wall 11 and the second side wall 12. When the front bumper beam 21 is subjected to external force, the elastic component disposed between the front bumper beam 21 and the body 10 provides elastic force to the front bumper beam 21. Since the front bumper beam 21 is movably mounted to the front end of the body 10 via the first elastic mounting member 22 and the second elastic mounting member 22' of the connecting component, it can buffer the external force on the front bumper beam 21 and allow the front bumper beam 21 to return to its original position relative to the body 10 after the external force is removed, effectively protecting the front end of the body 10. Therefore, in this application, the front end of the cleaning device adopts a square structure, which helps to increase the length of the roller brush, allowing both ends of the roller brush mounted at the front end of the body 10 to be as close as possible to the first sidewall 11 and the second sidewall 12. In this way, when the roller brush cleans the wall edge, the ends of the roller brush can be as close as possible to the wall edge, thereby improving the cleaning effect and enhancing the user experience.

[0037] like Figures 1 to 3As shown, the cleaning device also includes a side scraper 30, which is used to scrape away small debris and trash from the wall edges. Specifically, the side scraper 30 is detachably mounted on the first side wall 11 and / or the second side wall 12, with one end of the side scraper 30 protruding from the front bumper beam 21 away from the body 10. Although the roller brush can clean as close to the wall edge as possible, there is still a small gap between the end of the roller brush and the wall edge that cannot be cleaned. Therefore, the side scraper 30 is used to clean this small gap, thereby removing the debris and trash remaining in this gap.

[0038] Furthermore, because the side scraper 30 is made of a flexible material capable of elastic deformation, such as plastic, its end can press against the wall, thus completely scraping away debris and waste from the small gap between the end of the roller brush and the edge of the wall. On the other hand, the side scraper 30 pressing against the wall also helps prevent the sides of the cleaning device from rubbing against the wall and causing scratches or damage, keeping the cleaning device clean and aesthetically pleasing.

[0039] like Figure 2 As shown, the first elastic mounting member 22 includes a first connecting rod 221 and a first elastic element 223, and the second elastic mounting member 22' includes a second connecting rod 222 and a second elastic element 224. Both the first connecting rod 221 and the second connecting rod 222 are rotatably mounted to the machine body 10 via pins. The first end of the first connecting rod 221 protrudes through one of the first sidewall 11 and the second sidewall 12, and the first end of the second connecting rod 222 protrudes through the other of the first sidewall 11 and the second sidewall 12. In the embodiments of this application, as shown... Figure 3 As shown, the first end of the first connecting rod 221 protrudes through the first sidewall 11, and the first end of the second connecting rod 222 protrudes through the second sidewall 12. A first elastic element 223 is installed between the first connecting rod 221 and the body 10, providing elastic force to the first connecting rod 221; a second elastic element 224 is installed between the second connecting rod 222 and the body 10, providing elastic force to the second connecting rod 222. Figure 4 and Figure 6As shown, the front bumper beam 21 has a first latching portion 24 and a second latching portion 25 on the inner sidewall facing the fuselage 10. When the front bumper beam 21 is installed onto the fuselage 10, the first end of the first connecting rod 221 latches onto one of the first latching portion 24 and the second latching portion 25, and the first end of the second connecting rod 222 latches onto the other of the first latching portion 24 and the second latching portion 25. In the embodiment of this application, the first end of the first connecting rod 221 latches onto the first latching portion 24, and the first end of the second connecting rod 222 latches onto the second latching portion 25. Thus, the first elastic member 223 provides elastic force to cause the first end of the first connecting rod 221 to abut against the second guard section 212, and the second elastic member 224 provides elastic force to cause the first end of the second connecting rod 222 to abut against the third guard section 213.

[0040] Thus, when the front bumper beam 21 is not subjected to external force, it reaches equilibrium under the elastic force applied by the first elastic element 223 and the second elastic element 224. When the first protective section 211 of the front bumper beam 21 is subjected to external force, the external force will be divided into two components and transmitted to the first end of the first connecting rod 221 and the first end of the second connecting rod 222, and then to the first elastic element 223 and the second elastic element 224. Under the buffering elastic force of the first elastic element 223 and the second elastic element 224, the external force is canceled out after the front bumper beam 21 moves a little closer to the fuselage 10, thereby protecting the fuselage 10 from external force. When the second guard section 212 of the current anti-collision beam 21 is subjected to an external force, the force is transmitted to the first elastic element 223, causing the second guard section 212 to move closer to the first side wall 11 of the fuselage 10 (while the corresponding third guard section 213 moves away from the second side wall 12 of the fuselage 10), and the external force is buffered and offset by the first elastic element 223, thereby protecting the fuselage 10 from the external force. Similarly, when the third guard section 213 of the current anti-collision beam 21 is subjected to an external force, the force is transmitted to the second elastic element 224, causing the third guard section 213 to move closer to the second side wall 12 of the fuselage 10 (while the corresponding second guard section 212 moves away from the first side wall 11 of the fuselage 10), and the external force is buffered and offset by the second elastic element 224, thereby protecting the fuselage 10 from the external force.

[0041] In the embodiments of this application, the first elastic element 223 and the second elastic element 224 include, but are not limited to, torsion springs, and may also include, for example, sheet springs, tension springs, etc.

[0042] In embodiments of this application, the cleaning device further includes a controller (not shown), which has a first trigger switch (not shown) and a second trigger switch (not shown). The second end of a first connecting rod 221, away from the front bumper beam 21, extends to one of the first and second trigger switches. The second end of a second connecting rod 222, away from the front bumper beam 21, extends to the other of the first and second trigger switches. In embodiments of this application, the second end of the first connecting rod 221, away from the front bumper beam 21, extends to the first trigger switch, and the second end of the second connecting rod 222, away from the front bumper beam 21, extends to the second trigger switch. When the front bumper beam 21 is subjected to an external force, the second end of the first connecting rod 221 and / or the second end of the second connecting rod 222 respectively trigger the first and second trigger switches. When the first protective section 211 of the front bumper beam 21 is subjected to an external force, the second end of the first connecting rod 221 and the second end of the second connecting rod 222 simultaneously trigger the first and second trigger switches. When the second guard section 212 of the current anti-collision beam 21 is subjected to external force, the second end of the first connecting rod 221 should trigger the first trigger switch. When the third guard section 213 of the current anti-collision beam 21 is subjected to external force, the second end of the second connecting rod 222 should trigger the second trigger switch.

[0043] When any trigger switch is activated, the controller receives a signal that the front anti-collision beam 21 is subjected to an external force. The controller will determine that this is a collision force and will then control the walking mechanism of the cleaning device to change its travel path, thereby avoiding the object that exerted the external force and ensuring the safety of the cleaning device.

[0044] Furthermore, a forward-facing radar 41 is installed on the front wall 13 of the fuselage 10, and the forward-facing radar 41 is electrically connected to the controller. Additionally, side-facing radars 42 are also installed on the first side wall 11 and the second side wall 12 of the fuselage 10, and both side-facing radars 42 are electrically connected to the controller. The forward-facing radar 41 faces the first clearance hole 26 on the first guard section 211 to detect the path or obstacles ahead of the cleaning device's direction of travel. The side-facing radar 42 installed on the first side wall 11 faces the second clearance hole 27 on the second guard section 212 to detect obstacles to that side. The side-facing radar 42 installed on the second side wall 12 faces the second clearance hole 27 on the third guard section 213 to detect obstacles to that side.

[0045] like Figures 2 to 6 As shown, the first protective section 211 has a positioning protrusion 214 on its inner sidewall facing the fuselage 10. (As indicated...) Figure 2 and Figure 3As shown, the front wall 13 of the body 10 is provided with a positioning hole 14. The positioning protrusion 214 can be movably inserted into the positioning hole 14. On the one hand, the positioning protrusion 214 and the positioning hole 14 play a positioning and installation role, so that the front anti-collision beam 21 can be quickly and accurately installed on the body 10. On the other hand, along the travel direction of the cleaning device, the positioning protrusion 214 can slide back and forth and slide left and right in the positioning hole 14, so the positioning protrusion 214 is not fixedly restricted in the positioning hole 14.

[0046] like Figure 2 and Figure 3 As shown, the positioning hole 14 has a stop protrusion 15 on its hole wall. (As indicated...) Figure 5 As shown, the end of the positioning protrusion 214 is provided with a hook 215. When the positioning protrusion 214 is inserted into the positioning hole 14, the stop protrusion 15 engages with the hook 215 to prevent the positioning protrusion from falling out of the positioning hole 14. Therefore, the positioning protrusion 214 will not fall out of the positioning hole 14 after the stop protrusion 15 restricts the hook 215, that is, the front bumper beam 21 will not fall out of the fuselage 10 at will. The positioning protrusion 214 will only fall out of the positioning hole 14 when it is pulled away from the hook 215 by a considerable force, and then the front bumper beam 21 can be separated from the fuselage 10. Furthermore, since the front bumper beam 21 is assembled onto the fuselage 10 by engaging the first end of the first connecting rod 221 and the first end of the second connecting rod 222 with the first engaging part 24 and the second engaging part 25 respectively, after the stop protrusion 15 and the hook 215 disengage, the front bumper beam 21 can be detached from the fuselage 10 simply by continuing to pull the front bumper beam 21 so that the first engaging part 24 and the second engaging part 25 disengage from the first connecting rod 221 and the second connecting rod 222.

[0047] like Figure 2 As shown, the elastic component includes a first elastic structure 231, which is mounted on the front wall 13. The first elastic structure 231 provides elasticity to the first protective section 211 when it is subjected to an external force. Further, as... Figure 2 As shown, the first elastic structure 231 includes a first elastic element 2311 and a first buffer pad 2312. The force-applying end of the first elastic element 2311 is connected to the inner wall of the first guard section 211 facing the fuselage 10. The first buffer pad 2312 is spaced apart from the inner wall of the first guard section 211. When the first guard section 211 of the front anti-collision beam 21 is subjected to an external force, the first elastic element 2311 is first compressed and undergoes elastic deformation to generate elastic force, thereby offsetting part of the external force. When the first elastic element 2311 is compressed and deformed to a certain extent, the first guard section 211 continues to abut against the first buffer pad 2312, so that the first buffer pad 2312 and the first elastic element 2311 are compressed together and undergo elastic deformation until the external force is completely offset, thereby protecting the front wall 13 of the fuselage 10 from the action of external forces.

[0048] like Figure 2 As shown, the elastic component further includes a second elastic structure 232 and a third elastic structure 233. The second elastic structure 232 is mounted on one of the first sidewall 11 and the second sidewall 12, and the third elastic structure 233 is mounted on the other of the first sidewall 11 and the second sidewall 12. In the embodiments of this application, the second elastic structure 232 is mounted on the first sidewall 11, and the third elastic structure 233 is mounted on the second sidewall 12. The second elastic structure 232 provides elasticity when its corresponding second protective segment 212 is subjected to an external force, and the third elastic structure 233 provides elasticity when its corresponding third protective segment 213 is subjected to an external force. Further, as... Figure 2 As shown, both the second elastic structure 232 and the third elastic structure 233 include a second elastic element 2331 and a second buffer pad 2332. The force-applying end of the second elastic element 2331 of the second elastic structure 232 is connected to its corresponding second protective section 212, and the second buffer pad 2332 of the second elastic structure 232 and its corresponding second protective section 212 are spaced apart; the force-applying end of the second elastic element 2331 of the third elastic structure 233 is connected to its corresponding third protective section 213, and the second buffer pad 2332 of the second elastic structure 232 and its corresponding third protective section 213 are spaced apart.

[0049] When the second protective section 212 of the current anti-collision beam 21 is subjected to external force, the second elastic member 2331 of the second elastic structure 232 will be squeezed by the second protective section 212 to generate elastic deformation and generate elastic force, thereby offsetting part of the external force. When the second elastic member 2331 of the second elastic structure 232 is squeezed and deformed to a certain extent, the second protective section 212 continues to abut against the second buffer pad 2332 of the second elastic structure 232. Thus, the second buffer pad 2332 of the second elastic structure 232 and the second elastic member 2331 are squeezed together to generate elastic deformation until the external force is completely offset, thereby protecting the first side wall 11 of the fuselage 10 from the action of external force. Similarly, when the third protective section 213 of the current anti-collision beam 21 is subjected to external force, the second elastic member 2331 of the third elastic structure 233 will be squeezed and deformed to generate elastic force, thereby offsetting part of the external force. When the second elastic member 2331 of the third elastic structure 233 is squeezed and deformed to a certain extent, the third protective section 213 continues to abut against the first buffer pad 2312 of the third elastic structure 233. Thus, the first buffer pad 2312 of the third elastic structure 233 and the first elastic member 2311 are squeezed together to generate elastic deformation until the external force is completely offset, thereby protecting the front wall 13 of the fuselage 10 from external force.

[0050] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A cleaning device, characterized in that, include: The fuselage has a front wall at its front end along the direction of travel and a first side wall and a second side wall connected to both ends of the front wall, and the extension directions of the first side wall and the second side wall along the direction of travel are both perpendicular to the extension direction of the front wall. A front anti-collision structure includes a front anti-collision beam, a connecting assembly, and an elastic assembly. The front anti-collision beam includes a first protective section, a second protective section, and a third protective section. The second and third protective sections are respectively connected to the two ends of the first protective section. The first protective section is directly opposite the front wall, and the second and third protective sections are directly opposite the first side wall and the second side wall, respectively. The connecting assembly includes a first elastic mounting member and a second elastic mounting member. The first and second elastic mounting members are respectively mounted on the first and second side walls. The front anti-collision beam is movably mounted to the front end of the fuselage via the first and second elastic mounting members. The elastic assembly is installed between the fuselage and the front anti-collision beam, and the elastic assembly provides elastic force to the front anti-collision beam when it is subjected to an external force. The first elastic mounting component includes a first connecting rod and a first elastic element, and the second elastic mounting component includes a second connecting rod and a second elastic element. Both the first connecting rod and the second connecting rod are rotatably mounted on the body. The first end of the first connecting rod protrudes through one of the first sidewall and the second sidewall, and the first end of the second connecting rod protrudes through the other of the first sidewall and the second sidewall. The first elastic element is installed between the first connecting rod and the body, and the second elastic element is installed between the second connecting rod and the body. The front anti-collision beam has a first locking part and a second locking part facing the inner sidewall of the body. The first end of the first connecting rod and the first end of the second connecting rod are respectively locked into the first locking part and the second locking part. The first elastic element provides elastic force to cause the first end of the first connecting rod to abut against one of the second guard section and the third guard section, and the second elastic element provides elastic force to cause the first end of the second connecting rod to abut against the other of the second guard section and the third guard section. The first elastic element and the second elastic element include any one of a torsion spring, a leaf spring, and a tension spring.

2. The cleaning device according to claim 1, characterized in that: The cleaning device also includes a side scraper, which is detachably mounted on the first side wall and / or the second side wall. One end of the side scraper, away from the body, protrudes from the front anti-collision beam. The side scraper is used to scrape away small pieces of trash and debris from the edge of the wall.

3. The cleaning device according to claim 1 or 2, characterized in that: The cleaning device also includes a controller, which is provided with a first trigger switch and a second trigger switch. The second end of the first connecting rod away from the front bumper beam extends to one of the first trigger switch and the second trigger switch. The second end of the second connecting rod away from the front bumper beam extends to the other of the first trigger switch and the second trigger switch. When the front bumper beam is subjected to an external force, the second end of the first connecting rod and / or the second end of the second connecting rod respectively trigger the first trigger switch and the second trigger switch.

4. The cleaning device according to claim 1 or 2, characterized in that: The first protective section has a positioning protrusion on the inner side wall facing the body, and the front wall of the body has a positioning hole, and the positioning protrusion can be movably inserted into the positioning hole.

5. The cleaning device according to claim 4, characterized in that: The end of the positioning protrusion is provided with a hook, and the wall of the positioning hole is provided with a stop protrusion. The stop protrusion is hooked and engaged with the hook to prevent the positioning protrusion from falling out of the positioning hole.

6. The cleaning device according to claim 1 or 2, characterized in that: The elastic component includes a first elastic structure, which is mounted on the front wall and provides elasticity to the first protective section when the first protective section is subjected to an external force.

7. The cleaning device according to claim 6, characterized in that: The first elastic structure includes a first elastic element and a first buffer pad. The force-applying end of the first elastic element is connected to the inner sidewall of the first protective section facing the fuselage. The first buffer pad is spaced apart from the inner sidewall of the first protective section.

8. The cleaning device according to claim 7, characterized in that: The elastic component further includes a second elastic structure and a third elastic structure. The second elastic structure is installed on one of the first sidewall and the second sidewall, and the third elastic structure is installed on the other of the first sidewall and the second sidewall. The second elastic structure provides elasticity when one of its corresponding second protective section and the third protective section is subjected to an external force, and the third elastic structure provides elasticity when the other of its corresponding second protective section and the third protective section is subjected to an external force.

9. The cleaning device according to claim 8, characterized in that: Both the second elastic structure and the third elastic structure include a second elastic element and a second buffer pad; The force-applying end of the second elastic member of the second elastic structure is connected to one of the corresponding second protective section and the third protective section, and the second buffer pad of the second elastic structure and one of the corresponding second protective section and the third protective section are spaced apart; The force-applying end of the second elastic member of the third elastic structure is connected to the other of the corresponding second protective section and the third protective section, and the second buffer pad of the second elastic structure and the other of the corresponding second protective section and the third protective section are spaced apart.

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