Surface cleaning devices and cleaning systems

Abstract

This application provides a surface cleaning device and system. The surface cleaning device includes a device body, a shock absorber, a scraper assembly, and a drive assembly. The scraper assembly includes a scraper that is movable relative to the device body and has a raised position and a lowered position. In the lowered position, the scraper can swing downwards and outwards to bypass the shock absorber and scrape dirt from the edge areas of the surface to be cleaned towards the device body, thereby effectively cleaning the edge areas of the surface and improving the cleaning effect. Simultaneously, in the raised position, the scraper is located on the side of the shock absorber facing the device body and is higher than the working surface. This prevents the scraper from interfering with obstacles during normal cleaning or in the event of a collision, improving the scraper's lifespan and the operational safety of the surface cleaning device.

Description

Technical Field

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

[0002] Surface cleaning devices are equipment capable of automatically cleaning surfaces and are widely used in people's daily lives and work. For example, surface cleaning devices can include window cleaning robots. Surface cleaning devices can be attached to and moved along the surface to be cleaned, using cleaning components to achieve cleaning.

[0003] Surface cleaning devices typically have anti-collision elements at the peripheral edges of the housing. These anti-collision elements are movable relative to the housing to absorb impact energy when the surface cleaning device comes into contact with an obstacle, thus preventing damage to the surface cleaning device.

[0004] However, because the anti-collision components protrude from the edge of the housing, the cleaning components of the surface cleaning device cannot fully extend to the edge area of ​​the surface to be cleaned, resulting in poor cleaning performance in the edge area. Therefore, how to achieve effective cleaning of the edge area of ​​the surface to be cleaned and improve the cleaning effect of the surface cleaning device has become a technical problem to be solved. Summary of the Invention

[0005] This application provides a surface cleaning device and cleaning system that can effectively clean the edge areas of the surface to be cleaned, thereby improving the cleaning effect of the surface cleaning device.

[0006] In a first aspect, embodiments of this application provide a surface cleaning device, comprising:

[0007] The device body is constructed to adhere to and move on the surface to be cleaned. The device body has a working surface for adhering to the surface to be cleaned to clean the surface.

[0008] The anti-collision component is located on the outer periphery of the device body and is movably connected to the device body so that the anti-collision component can move toward one side of the device body;

[0009] A scraper assembly is disposed on one side of the device body in a first direction, which is the direction of movement of the device body. The scraper assembly includes a scraper that is movable relative to the device body and has a raised position and a lowered position. In the raised position, at least a portion of the scraper is located on the side of the anti-collision member facing the device body, and along a second direction, the bottom edge of the scraper is away from the working surface of the device body and is located above the working surface. In the lowered position, the scraper is located on the side of the anti-collision member away from the device body, and the bottom edge of the scraper is on the same plane as the working surface. The second direction is the height direction of the device body.

[0010] The drive assembly is located on the side of the device body near the scraper assembly along the first direction. The drive assembly includes a drive motor and a motion frame. The scraper is movably connected to the motion frame. The drive motor drives the motion frame to reciprocate along the first direction, thereby causing the scraper to switch between a raised position and a lowered position.

[0011] The surface cleaning device provided in this application embodiment has an anti-collision component disposed on the outer periphery of the device body and movably connected to the device body, so that when the anti-collision component encounters obstacles such as window frames, it can move toward one side of the device body, thereby providing a buffer protection for the device body.

[0012] The scraper assembly is disposed on one side of the device body in a first direction, and the scraper in the scraper assembly is configured to be movable relative to the device body, so as to realize the movable installation of the scraper on the device body.

[0013] The scraper is configured to have a raised position and a lowered position, which allows the scraper to be switched from the raised position to the lowered position when the surface cleaning device needs to clean the edge area of ​​the surface to be cleaned.

[0014] When in the descending position, the scraper is located on the side of the anti-collision member away from the device body, and the bottom edge of the scraper protrudes beyond the bottom edge of the device body. This allows the scraper to swing downwards and outwards in the descending position, positioned in front of the anti-collision member in the first direction, thus overcoming its obstruction. When the device body retracts in the first direction, because the scraper is in the descending position, it can scrape dirt from the edge area of ​​the surface to be cleaned towards one side of the device body, facilitating cleaning. This allows the surface cleaning device to effectively clean the edge area of ​​the surface, achieving thorough cleaning without dead angles and improving the cleaning effect.

[0015] Correspondingly, in the raised position, the scraper is located on the side of the anti-collision component facing the device body and is higher than the working surface, allowing the scraper to be in an upward and inward retracted state. This prevents the scraper from contacting the surface to be cleaned during cleaning, improving the scraper's service life and preventing the scraper's outward swing from affecting the movement of the device body on the surface to be cleaned.

[0016] In addition, the drive assembly is located on the side of the device body close to the scraper assembly. The drive motor drives the motion frame to reciprocate along the first direction, thereby shortening the transmission path between the drive assembly and the scraper assembly. This makes the motion frame control the scraper to switch between the raised and lowered positions with a shorter stroke, achieving rapid response and precise control of the scraper position switching.

[0017] Therefore, the surface cleaning device provided in this application embodiment, by cooperating the scraper assembly, the drive assembly and the anti-collision member, can clean the edge area of ​​the surface to be cleaned by the scraper while the anti-collision member provides buffering, thereby improving the cleaning coverage and operational reliability of the surface cleaning device and thus improving the user experience.

[0018] In some embodiments, the device body includes a mounting bracket and a cleaning component, the cleaning component being disposed on the bottom surface of the mounting bracket, and the side of the cleaning component facing away from the mounting bracket forming a working surface;

[0019] There is a channel between the mounting bracket and the bottom of the anti-collision component for the scraper to pass through.

[0020] This design allows the scraper to switch positions via the channel. When the scraper is in the raised position, its bottom edge can move away from the working surface and be positioned above it. This ensures that when the surface cleaning device cleans non-edge areas of the surface to be cleaned, the scraper remains away from the surface, preventing interference between the scraper and the workpiece and ensuring the cleaning operation proceeds smoothly.

[0021] At the same time, when the scraper is in the lowered position, the bottom edge of the scraper can be on the same plane as the working surface, so that the scraper can remove dirt from the surface to be cleaned.

[0022] In some embodiments, the drive assembly further includes a fixing member disposed on the device body and fixed relative to the device body;

[0023] The drive motor is mounted on the motion frame, and the output end of the drive motor has a rotating component. The rotating component is connected to the fixed component and can rotate relative to the fixed component and reciprocate along the first direction.

[0024] With this configuration, when the drive motor rotates the rotating component, the stationary component remains stationary, thus limiting the rotational motion of the rotating component and converting it into linear displacement along the first direction. Therefore, by controlling the forward and reverse rotation of the drive motor, the rotating component can be driven to reciprocate relative to the stationary component along the first direction.

[0025] Based on this, since the drive motor is mounted on the moving frame, the linear displacement of the rotating component can directly drive the moving frame and the scraper connected to the moving frame to move synchronously along the first direction, thereby realizing the switching of the scraper between the lifting position and the lowering position.

[0026] In addition, by directly mounting the drive motor on the motion frame and cooperating with the fasteners fixed on the device body, there is no need to arrange complex linear guide rails and push rod structures outside the motion frame. This makes the overall structure of the drive assembly more compact, effectively reducing the space occupied by the drive assembly within the device body and improving the utilization rate of the internal space.

[0027] In some embodiments, the motion frame includes a drive section and two connecting sections. Along the second direction, the drive section is disposed at the top of the fixing member, and the rotating member is disposed at the bottom of the drive section.

[0028] Two connecting sections are located on both sides of the drive section in the third direction and are movably connected to the ends of the scraper in the third direction, which is the width direction of the device body.

[0029] With this configuration, during the movement of the drive section, the two connecting sections distributed on both sides of the drive section move along the first direction under the drive of the drive section. Since the two connecting sections are movably connected to both ends of the scraper blade in the width direction, the two connecting sections act simultaneously on both ends of the scraper blade when they move, so that the scraper blade can obtain a uniform and synchronous driving force at both ends, ensuring the synchronicity and stability of the overall movement of the scraper blade, and avoiding the problem of tilting or jamming of the scraper blade due to force on one side.

[0030] Meanwhile, by placing the drive section on top of the fixed component and the rotating component at the bottom to cooperate with the fixed component, a stacked layout is formed in the second direction, which can reduce the space occupied by the drive component in the first and third directions, and improve the space utilization and structural compactness of the device body.

[0031] In some embodiments, an installation space is formed between the drive segment and the two connecting segments, and a fastener is disposed within the installation space, allowing the drive segment to be disposed on top of the fastener.

[0032] The rotating component is located on the side of the drive section facing the installation space.

[0033] This arrangement, by placing the fixing component within the installation space, allows the transmission mechanism between the rotating component and the fixing component to be embedded within the installation space enclosed by the motion frame, forming a nested arrangement. Compared to placing the fixing component outside the motion frame or arranging it side-by-side with the motion frame, the nested arrangement makes full use of the internal space of the motion frame, avoiding the transmission components protruding outwards and occupying additional space. This reduces the overall volume occupied by the drive assembly within the device body, improving the structural compactness and space utilization of the surface cleaning device.

[0034] In some embodiments, the fixing member has a rack groove, and the rotating member engages with the rack groove for transmission.

[0035] With this configuration, when the drive motor starts and drives the rotating component to rotate, the rotating component is guided and limited by the rack grooves on the fixed component as it rotates, due to the meshing between the rotating component and the rack grooves. This directly converts the rotational motion of the rotating component into linear movement along the first direction. As the rotating component translates along the first direction, it drives the drive section and the connecting sections on both sides to move synchronously. In turn, the connecting sections drive the scraper to switch between the lifting and lowering positions within the channel.

[0036] Meanwhile, the use of rotating parts meshing with the rack and pinion groove transforms the sliding friction during transmission into rolling friction, reducing transmission resistance and improving transmission efficiency.

[0037] Building upon this, in the meshing state, multiple pairs of teeth simultaneously engage, resulting in a more even distribution of force on the moving frame during reciprocating movement, thus avoiding jamming or localized wear caused by single-point force application. Simultaneously, it enables precise control of the moving frame's displacement, ensuring consistent stroke height for each scraper lift and guaranteeing accurate position switching.

[0038] In addition, the rack groove can precisely guide the movement of the rotating parts, preventing the moving frame from slipping or deviating during reciprocating movement, making the switching action of the scraper between the raised and lowered positions more precise and smooth, thereby ensuring the working reliability of the surface cleaning device.

[0039] In some embodiments, the fastener has a guide groove that extends along a first direction;

[0040] The drive section has a raised guide structure on the side facing the fixing member, and the guide structure is slidably connected to the guide groove.

[0041] With this configuration, since the guide groove extends along the first direction and the protruding guide structure forms a sliding connection with the guide groove, when the drive motor drives the rotating component to rotate and causes the drive segment to reciprocate relative to the fixed component along the first direction, the inner wall of the guide groove can limit the guide structure, that is, restrict the degree of freedom of the drive segment in directions other than the first direction. This ensures that the drive segment can only slide linearly along the extension direction of the guide groove without deflection.

[0042] In addition, the sliding connection between the guide structure and the guide groove can withstand and absorb the lateral force that may be generated during the movement, preventing the moving frame from shifting or swaying during reciprocating movement. This makes the movement trajectory of the scraper more stable and precise when switching between the lifting and lowering positions, further improving the motion accuracy and working reliability of the drive components.

[0043] In some embodiments, the guide groove has a front groove wall and a rear groove wall disposed opposite to each other in a first direction, and the rear groove wall is disposed close to the center of the device body relative to the front groove wall.

[0044] When the scraper is in the raised position, the guide structure slides to and contacts the rear groove wall. At this time, the rear groove wall can block the guide structure, preventing it from continuing to move in the first direction, thus allowing the scraper to be stably and accurately maintained in the raised position.

[0045] When the scraper blade is in the descending position, the guide structure slides to and contacts the front groove wall. At this time, the front groove wall blocks the guide structure, preventing it from moving further in the first direction, thus allowing the scraper blade to be stably and accurately maintained in the descending position.

[0046] This design ensures that the guide structure can abut against the corresponding groove wall whether the scraper is in the raised or lowered position, effectively eliminating the assembly gap between the guide structure and the guide groove in the first direction. This avoids the scraper from shaking or wobbling due to loose fit when it contacts the surface to be cleaned, further improving the stability of the scraper at its extreme working position and enhancing the cleaning effect and reliability of the surface cleaning device.

[0047] In some embodiments, the guide structure includes a guide post and a bushing, with at least a portion of the guide post disposed within a guide groove; the bushing is rotatably fitted onto the guide post and slidably connected to the guide groove, thereby achieving a sliding connection between the guide structure and the guide groove.

[0048] With this configuration, when the drive section moves the guide structure back and forth in the guide groove along the first direction, the bushing, which is fitted on the guide post, will be subjected to the frictional force of the inner wall of the guide groove during the translation process of following the guide post, and thus rotate around the axis of the guide post.

[0049] This transforms the sliding friction between the guide structure and the inner wall of the guide groove into rolling friction, thereby reducing frictional resistance during relative motion, reducing wear and heat generation between components, and making the movement of the drive section driving the scraper between the lifting and lowering positions smoother. It avoids jamming caused by excessive friction and further improves the service life and smoothness of the drive components.

[0050] In some embodiments, the fastener has two guide grooves, which are distributed on both sides of the rack groove in the third direction;

[0051] The drive section is equipped with a guide structure at the position corresponding to each guide groove.

[0052] This configuration, by setting guide grooves on both sides of the rack groove in the third direction and correspondingly setting two guide structures on the drive section, ensures that the drive section receives symmetrical and balanced guide support forces on both sides when moving along the first direction. This prevents the drive section from tilting or deflecting during movement, further improving the stability and straightness of the movement of the motion frame, and thus ensuring the stability of the scraper movement.

[0053] In some embodiments, the drive section has a protrusion on the side facing the fixing member. The protrusion is inserted into the rack groove and a first roller is provided on the protrusion. The first roller makes rolling contact with the bottom plate of the device body.

[0054] The fasteners are mounted on the base plate.

[0055] With this configuration, as the drive section moves the scraper back and forth in the first direction, the contact between the first roller and the base plate transforms the sliding friction of the drive section relative to the base plate into rolling friction between the first roller and the base plate. This reduces the frictional resistance of the drive section, decreases wear and energy loss between components, and makes the movement of the scraper between the lifting and lowering positions smoother. It also avoids movement jamming caused by excessive friction, improving the transmission efficiency and operational stability of the drive assembly.

[0056] Meanwhile, the first roller can also support the drive section so that the drive section will not tilt or sway when it is driven by the motor to move relative to the fixed part, thus ensuring the stability of the entire motion frame during reciprocating movement.

[0057] In some embodiments, a second roller is provided on the connecting section, and the second roller makes rolling contact with the bottom plate in the device body;

[0058] The fasteners are mounted on the base plate.

[0059] With this configuration, during the reciprocating movement of the connecting section along the first direction driven by the drive section, the contact between the second roller and the base plate can transform the sliding friction of the connecting section relative to the base plate into rolling friction between the second roller and the base plate. This reduces the frictional resistance of the connecting section during movement, avoids movement jamming caused by excessive friction, and further improves the transmission efficiency and operational stability of the drive assembly.

[0060] Meanwhile, the second roller can also support the connecting section so that the connecting section will not tilt or sway when it moves relative to the fixed part under the drive of the drive section, thus ensuring the stability of the entire moving frame during reciprocating movement.

[0061] In some embodiments, the surface cleaning device further includes a pressure strip that extends along a first direction and is positioned above the moving frame in a second direction.

[0062] With this configuration, the pressure strip can block the moving frame in the second direction, thereby preventing displacement of the moving frame in the second direction during the operation, drop, or handling of the surface cleaning device. This avoids transmission failure caused by the disengagement of the rotating part and the fixed part, thus ensuring the stability and reliability of the drive assembly.

[0063] In some embodiments, the surface cleaning device further includes a first positioning detection element and a second positioning detection element, wherein the second positioning detection element is located in front of the first positioning detection element along a first direction;

[0064] The motion frame has a part to be tested, which is configured to move along a first direction to a first positioning detection element and cooperate with the first positioning detection element to detect whether the scraper is in the raised position;

[0065] The part to be inspected is configured to move along the first direction to the second positioning detection element and cooperate with the second positioning detection element to detect whether the scraper is in the descending position.

[0066] With this configuration, when the part to be detected reaches the corresponding position, the drive motor can be controlled to stop running, thereby achieving position detection. This allows the drive motor to precisely control the scraper to stay in the raised or lowered position, avoiding structural interference or damage caused by excessive rotation of the drive motor.

[0067] In some embodiments, the scraper assembly further includes a lifting bracket connected between the scraper and the moving frame. The lifting bracket is configured to be able to rise and fall relative to the moving frame during the movement of the moving frame, so as to drive the scraper to switch between a raised position and a lowered position, so as to convert the horizontal displacement of the moving frame in the first direction into the displacement of the scraper in the second direction, so as to realize the smooth switching of the scraper between the raised position and the lowered position.

[0068] In some embodiments, the position where the motion frame connects to the lifting support has a slide groove, which extends along a second direction;

[0069] The first end of the lifting bracket is slidably connected to the slide groove, and the second end of the lifting bracket is connected to the scraper and fixed relative to it.

[0070] The first end of the lifting support is configured to move along the slide groove during the movement of the moving frame, and drive the second end to move synchronously.

[0071] With this configuration, since the moving frame itself moves back and forth in the first direction, the moving frame will also drive the first end to move synchronously in the first direction, so that the actual movement trajectory of the first end of the lifting bracket is a composite movement in the first direction and the second direction. The composite movement is transmitted to the second end through the lifting bracket, so that the scraper can be offset in the first direction at the same time during the lifting and switching process.

[0072] When the scraper blade switches from the lowering position to the raising position, the moving frame moves backward along the first direction, while the first end slides upward relative to the moving frame in the second direction within the slide groove. Under the combined effect of these two movements, the second end drives the scraper blade to move along an obliquely upward and backward trajectory, achieving a retraction backward and towards the inside of the device body. This allows the scraper blade to retract inward when raising to avoid obstacles, effectively reducing space occupation in the non-working state and avoiding interference with other components.

[0073] Conversely, when the scraper blade switches from the raised position to the lowered position, the moving frame moves forward in the first direction, while the first end slides downward relative to the moving frame in the second direction within the slide groove. Under the combined effect of these two movements, the second end drives the scraper blade to move along a diagonally forward and downward trajectory, achieving a forward and outward swing extension of the device body. This allows the scraper blade to swing outward during the lowering operation, ensuring the effective scraping area and guaranteeing the cleaning effect.

[0074] In some embodiments, the scraper assembly further includes a third roller and a connecting shaft. The third roller is disposed in a slide groove, and the second connecting shaft passes through the third roller and is connected to the first end of the lifting bracket to achieve a sliding connection between the first end of the lifting bracket and the slide groove.

[0075] With this configuration, when the first end of the lifting bracket moves relative to the moving frame in the second direction within the slide groove, it will drive the third roller to roll synchronously within the slide groove. This transforms the original sliding contact between the first end and the inner wall of the slide groove into rolling contact, reducing the frictional resistance between the first end and the slide groove. This makes the movement of the lifting bracket within the slide groove smoother, avoiding jamming problems caused by excessive sliding frictional resistance, and further improving the flexibility and reliability of the scraper when switching between the lifting and lowering positions.

[0076] In some embodiments, the lifting bracket has two opposite and spaced-apart connecting arms at the first end, and a connecting shaft is disposed between the two connecting arms.

[0077] With this configuration, when the scraper blade switches between the lowering and raising positions, the two connecting arms can provide stable clamping support to the third roller from opposite sides of the connecting shaft. This allows the connecting arms on both sides to evenly distribute the load, preventing lateral tilting or deflection of the connecting shaft and the third roller during movement, and improving the stability of the scraper blade during position switching.

[0078] In some embodiments, one end of the slide has a slot facing the top of the device body. Since the slot is open to the top of the device body, the third roller can be directly placed into the slide from top to bottom during assembly, which facilitates the installation of the third roller.

[0079] A first limiting component is provided at the groove opening, which is connected to the moving frame and covers the groove opening. In this way, when the third roller is assembled in place, the first limiting component covers the groove opening to prevent the third roller from detaching from the groove opening upwards during the movement of the scraper driven by the lifting bracket.

[0080] In some embodiments, the scraper assembly further includes a connecting rod, the first end of which is connected to and fixed relative to the second end of the lifting bracket;

[0081] The second end of the connecting rod is inclined toward the bottom of the device body relative to its first end, and is connected to and fixed relative to at least part of the scraper.

[0082] With this configuration, since the second end of the connecting rod is inclined relative to the first end towards the bottom of the device body, when the moving frame drives the first end of the lifting bracket to move along the first direction, the displacement transmitted by the inclined posture of the connecting rod will force the first end of the lifting bracket to move along the second direction within the slide groove. The combined displacement of the first end translating along the first direction and sliding along the second direction is transmitted to the scraper blade through the inclined connecting rod, causing the scraper blade to generate displacement in the second direction during its movement along the first direction. In this way, the scraper blade can be retracted backward and inward in the lifting position and swung forward and outward in the lowering position without a complex transmission structure, simplifying the transmission structure of the scraper blade assembly.

[0083] In some embodiments, the device body has a limiting channel, and the connecting rod is inserted into the limiting channel to guide and limit the movement of the connecting rod, so as to prevent the connecting rod from shaking or deviating during the process of driving the scraper.

[0084] In some embodiments, the surface cleaning device further includes an edge detection component located in the corner area of ​​the device body, which is capable of detecting whether the surface cleaning device is at an edge.

[0085] The scraper includes a first scraper segment and a second scraper segment. The second scraper segment is movably connected to the end of the first scraper segment, and the second scraper segment is positioned closer to the edge detection component than the first scraper segment.

[0086] When in the raised position: the second scraper segment is bent relative to the first scraper segment, and both the first and second scraper segments are located on the inner periphery of the edge detection component. The inner periphery refers to the side of the edge detection component that is closer to the device body in the first direction.

[0087] When in the descending position: the first scraper segment and the second scraper extend in the same direction and are both located on the outer periphery of the edge detection component. The outer periphery refers to the side of the edge detection component that is away from the device body in the first direction, so that the first scraper segment and the second scraper segment can be unfolded together and fit against the surface to be cleaned, making it easier to scrape and clean the surface to be cleaned.

[0088] Simultaneously, during the transition from the raised to the lowered position of the scraper, the second scraper segment straightens and unfolds from its bent state to move to the front of the edge detection component. In this way, the second scraper segment, while unfolding, can also clean the corners and edges near the edge detection component, thereby further reducing the cleaning blind spots of the device body and improving the cleaning effect of the surface cleaning device.

[0089] In some embodiments, during the descent phase, the first and second scraper segments overlap along their length. This allows the first and second scraper segments to connect with each other along their length, eliminating cleaning blind spots caused by seams.

[0090] Meanwhile, the overlapping part can also support the second scraper segment to increase the structural stability of the second scraper segment after it is unfolded, and prevent the second scraper segment from lifting or falling off under the action of scraping resistance, thereby ensuring the cleaning effect of the scraper.

[0091] In some embodiments, in the raised and lowered positions, there is a gap between the second scraper segment and the circumferential outer wall of the edge detection component.

[0092] With this configuration, when the device is raised, the distance between the second scraper segment and the circumferential outer wall of the edge detection component can prevent unnecessary contact or compression between the second scraper segment and the edge detection component, thus preventing the second scraper segment from interfering with the edge detection component.

[0093] During the descent phase, the distance between the second scraper segment and the circumferential outer wall of the edge detection component ensures that the edge detection component is unaffected by the second scraper segment, thus ensuring that the detection area of ​​the edge detection component remains unobstructed.

[0094] By reserving gaps in both the lifting and lowering positions, the edge detection component can perform edge detection independently and stably when the second scraper section is in different states, thus improving the overall reliability of the surface cleaning device.

[0095] In some embodiments, the scraper assembly further includes a mounting bracket and an adapter, wherein the first scraper segment is movably connected to the motion frame via the mounting bracket; the adapter has a connecting portion and a first connecting end, the connecting portion being rotatably connected to the mounting bracket, and the first connecting end being connected to the second scraper segment.

[0096] With this configuration, when the connecting rod moves the mounting frame from the retraction position to the outward swing position, the mounting frame synchronously moves the adapter. Since the connecting part of the adapter can rotate relative to the mounting frame, during the displacement of the mounting frame, the first connecting end of the adapter can deflect with the rotation of the adapter, causing the second scraper segment to flip relative to the first scraper segment. Thus, driven by the adapter, the second scraper segment can gradually extend, thereby achieving the outward swing motion of the second scraper segment from the retraction position to the downward swing position.

[0097] Conversely, when the connecting rod drives the mounting bracket to switch from the outward swing position to the raised position, during the displacement of the mounting bracket, the first connecting end of the adapter can deflect with the rotation of the adapter, and drive the second scraper segment to flip relative to the first scraper segment, causing the second scraper segment to bend relative to the first scraper segment.

[0098] In some embodiments, the adapter further has a second connecting end, the device body has a second limiting member, and the surface cleaning device further includes a third limiting member;

[0099] Along the first direction: the second limiting member is located on the rear side of the second connecting end, the third limiting member is located on the front side of the second connecting end, and the third limiting member is disposed on the device body, the anti-collision member, or the mounting bracket;

[0100] When in the raised position, the second connecting end abuts against the second limiting member to limit the extreme angle of the adapter's backward rotation, ensuring that the second scraper segment can be stably in a bent state, while preventing the adapter from overturning and interfering with other structures in the device body or causing mechanical damage.

[0101] When in the descending position, the second connecting end abuts against the third limiting member to limit the maximum angle of forward rotation of the adapter, ensuring that the second scraper segment can be stably maintained in the outwardly unfolding descending state, while avoiding the problem of the second scraper segment coming off due to excessive flipping of the adapter or interfering with structures such as anti-collision components.

[0102] By simultaneously setting the second and third limiting components, the two extreme positions of the adapter in the raised and lowered positions can be restricted, ensuring accurate positioning of the scraper blade in both the outward expansion and inward retraction states, thereby improving the structural stability of the scraper blade assembly.

[0103] In some embodiments, during the process of the scraper bar switching from a lowered position to an raised position, the circumferential outer wall of the edge detection component is configured to abut against the rear side of the second scraper bar segment in a first direction to drive the second scraper bar segment to bend relative to the first scraper bar segment.

[0104] With this configuration, during the transition of the scraper from the descending position to the rising position, the circumferential outer wall of the edge detection component can abut against the rear side of the second scraper segment in the first direction, thereby generating a pushing force on the second scraper segment. When the rear side of the second scraper segment is subjected to this pushing force in the first direction, the second scraper segment can be driven to bend relative to the first scraper segment under the action of the pushing force, causing the scraper to switch from the outward swing position to the retracted position.

[0105] In some embodiments, the scraper assembly further includes an elastic element connected between the mounting bracket and the adapter, and the elastic element is configured to cause the adapter to always have a tendency to move downwards with the second scraper segment.

[0106] With this configuration, when the scraper is in the descending position, the elastic element continuously releases elastic restoring force. The elastic restoring force acts on the adapter, enabling the adapter to drive the second scraper segment to be stably in the descending position. This prevents the second scraper segment from shaking or shifting position during operation, ensuring the stability of the second scraper segment in the descending position and improving the scraping effect of the second scraper segment on dirt.

[0107] When the scraper blade switches from the descending position to the retracting position, the adapter moves relative to the mounting bracket. At this time, the adapter further compresses the elastic element, increasing the accumulated elastic restoring force. Thus, when the drive assembly moves the scraper blade from the retracting position to the descending position, the increased elastic restoring force provides a driving force to the adapter, forcing the second scraper blade segment, which is in a bent state, to switch to the unfolded state. This prevents the second scraper blade segment from getting stuck in the bent state and failing to reset smoothly, ensuring the smoothness of the scraper blade state switching and improving the reliability of the scraper blade assembly.

[0108] In some embodiments, the elastic element is a torsion spring, the mounting bracket has a protruding sleeve portion, the torsion spring is sleeved on the sleeve portion, one end of the torsion spring is connected to the mounting bracket, and the other end of the torsion spring is movably connected to the adapter, so as to radially limit the torsion spring through the sleeve portion and prevent the torsion spring from radially shifting or detaching from the mounting bracket during the force process.

[0109] During the rotation of the adapter, the torsion spring remains in a pre-tensioned state. This pre-tensioned torsion spring generates a torsional restoring torque, which is opposite to the direction of the adapter's rotation from the descending position to the retracting position, thus ensuring that it always has a tendency to move towards the descending position with the second scraper segment.

[0110] In some embodiments, the adapter has a groove, and when the first scraper segment is in the descending position, the length direction of the groove is parallel to the length direction of the first scraper segment. This allows the thrust generated by the torsion spring to be perpendicular to the length direction of the groove, keeping the adapter stationary along the length direction of the first scraper segment, preventing lateral displacement or movement, and further improving the positional stability and scraping effect of the scraper when it is in the descending position.

[0111] The other end of the torsion spring is inserted into the strip groove and can move along the strip groove. By moving the torsion spring in the strip groove, the error caused by the misalignment of the transition piece and the torsion spring's movement trajectory is absorbed, avoiding additional interference force and ensuring the stability of the torsion spring's operation.

[0112] Secondly, embodiments of this application also provide a cleaning system, including a base station and a surface cleaning device in any of the above embodiments.

[0113] The cleaning system provided in this application includes the above-mentioned surface cleaning device, and therefore has the beneficial effects of a surface cleaning device. By cooperating the scraper assembly, the drive assembly and the anti-collision member, while the anti-collision member provides buffering, the scraper can also clean the edge area of ​​the surface to be cleaned, thereby improving the cleaning coverage and operational reliability of the surface cleaning device, and thus improving the user experience. Attached Figure Description

[0114] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0115] Figure 1 This is a schematic diagram of the surface cleaning device provided in the embodiments of this application;

[0116] Figure 2 for Figure 1 A schematic diagram of the mid-surface cleaning device from another perspective;

[0117] Figure 3 for Figure 1 A schematic diagram of the mid-surface cleaning device from another perspective;

[0118] Figure 4 for Figure 3 A schematic diagram of the structure for removing the mounting bracket and cleaning components from the mid-surface cleaning device;

[0119] Figure 5 for Figure 1 A schematic diagram of the cross-section of the intermediate surface cleaning device in the AA direction;

[0120] Figure 6 for Figure 3 A schematic diagram of the cross-section of the intermediate surface cleaning device in the BB direction;

[0121] Figure 7 A schematic diagram showing the scraper assembly and drive assembly in the descending position;

[0122] Figure 8 for Figure 7 A structural diagram from another perspective;

[0123] Figure 9 A schematic diagram showing the scraper assembly and drive assembly in the raised position;

[0124] Figure 10 for Figure 9 Assembly diagram of the middle scraper assembly;

[0125] Figure 11 A schematic diagram of the surface cleaning device in the descending position;

[0126] Figure 12 for Figure 11 Schematic diagram of the structure without the limiting seat;

[0127] Figure 13 This is a schematic diagram of the surface cleaning device in the raised position.

[0128] Figure label:

[0129] 100 - Surface cleaning device;

[0130] 1-Device body; 11-Mounting bracket; 12-Cleaning component; 13-Working surface; 14-Passageway; 15-Base plate; 16-Limiting passage; 17-Second limiting component;

[0131] 2- Collision protection components;

[0132] 3-Scraper assembly; 31-Mounting bracket; 311-Socket; 312-First groove; 313-Second groove; 32-Scraper; 321-First scraper segment; 322-Second scraper segment; 33-Third roller; 34-Connecting shaft; 35-Lifting bracket; 351-Connecting arm; 36-Connecting rod; 37-Adapter; 371-Connecting part; 372-First connecting end; 373-Second connecting end; 374-Third connecting end; 3741-Strip groove; 38-Elastic element; 39-Limiting seat; 391-Assembly port;

[0133] 4-Driver components;

[0134] 41-Drive motor; 411-Rotating component;

[0135] 42-Motion frame; 421-Drive section; 4211-Guide structure; 4211a-Guide column; 4211b-Busset; 4212-Protrusion; 4213-First roller; 422-Connecting section; 4221-Second roller; 423-Installation space; 424-Part to be tested; 425-Slide groove; 4251-Groove opening;

[0136] 43-Fixing component; 431-Rack groove; 432-Guide groove;

[0137] 44 - First limiting component;

[0138] 5-Pressure strip;

[0139] 6-First item to be inspected;

[0140] 7-Second inspection piece;

[0141] 8-Edge detection component;

[0142] 9-Third limiting component;

[0143] x - First direction;

[0144] z - Second direction;

[0145] y - Third-party direction. Detailed Implementation

[0146] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0147] This application provides a surface cleaning device. The surface cleaning device may include equipment capable of automatically cleaning surfaces such as window-cleaning robots and wall-climbing robots. For example, the surface to be cleaned may be a glass window, curtain wall, etc. The following description primarily uses the scenario of cleaning a glass window as an example to illustrate the structure of the surface cleaning device.

[0148] Figure 1 This is a schematic diagram of the surface cleaning device provided in an embodiment of this application.

[0149] Please refer to Figure 1 This application provides a surface cleaning device. The following description primarily uses the scenario of cleaning a glass window as an example to illustrate the structure of the surface cleaning device.

[0150] The surface cleaning device 100 includes a device body 1 and an adsorption component disposed on the device body 1. The adsorption component is used to adsorb the device body 1 onto the surface of the glass. The adsorption component includes, but is not limited to, a vacuum pump or a negative pressure fan device.

[0151] The surface cleaning device 100 also includes a housing, a walking assembly, and a cloth. The housing is the outer shell of the device body 1. The cloth is disposed at the bottom end of the housing (e.g., the side facing the glass surface). Along the walking direction of the surface cleaning device 100, the walking assembly can be disposed on the front and rear sides or the left and right sides of the housing. In this way, the surface cleaning device 100 can walk on the glass surface by means of the walking assembly to clean the glass surface by means of the cloth. Exemplarily, the walking assembly includes, but is not limited to, a track structure.

[0152] The surface cleaning device 100 also includes a collision avoidance member 2. For example, the collision avoidance member 2 is a collision avoidance plate. The collision avoidance member 2 is disposed on the outer periphery of the device body 1, especially on the outer periphery of the base plate. That is, the collision avoidance plate has a ring structure and is movably connected to the device body 1, so that the collision avoidance member 2 can move along the moving direction of the surface cleaning device 100. In this way, when the surface cleaning device 100 encounters an obstacle, the collision avoidance member 2 will retract to one side of the device body 1, so that the collision avoidance member 2 can protect the device body 1.

[0153] In addition, the surface cleaning device 100 also includes a collision sensing element, such as a collision sensor. The collision sensor is disposed between the anti-collision member 2 and the device body 1, and on one of the anti-collision member 2 and the device body 1. In this way, when the anti-collision member 2 encounters an obstacle, the anti-collision member 2 retracts to one side of the device body 1, and the collision sensor can be triggered to send a collision signal to the controller of the surface cleaning device 100. The controller determines that the surface cleaning device 100 has been collided based on the collision signal and controls the surface cleaning device 100 to stop or turn.

[0154] Therefore, if the glass has a framed structure, the collision sensor can be used to detect whether the surface cleaning device 100 has reached the frame of the glass; or, the collision sensor can be used to detect whether the surface cleaning device 100 has collided with an obstacle.

[0155] The surface cleaning device 100 also includes a corner assembly, which is disposed at the corner of the surface cleaning device 100. For example, the surface cleaning device 100 is a rectangular structure, and the area where two adjacent sides of the rectangle intersect is the corner position; at least a portion of the corner assembly protrudes outward from the outer contour of the base plate.

[0156] The corner assembly includes a fixing member and an edge detection component 8. The fixing member is connected to the anti-collision member 2. The fixing member has a receiving space with an opening at the bottom end. The edge detection component 8 is located in the receiving space and can extend out of the receiving space through the opening at the bottom end or be received inside the receiving space.

[0157] In addition, the corner assembly also includes an elastic element, which includes, but is not limited to, a spring. The edge detection component 8 can be a boundary detection ball. The elastic element is disposed between the top of the edge detection component 8 and the top wall of the accommodating space. In this way, the edge detection component 8 is movably disposed on the fixing member through the elastic element. The edge detection component 8 can protrude outward from the bottom end of the base plate and abut against the glass surface under the force of the elastic element.

[0158] When the glass is frameless, if the surface cleaning device 100 moves to the point where the edge detection component 8 is outside the glass, the edge detection component 8 moves downward under the elastic force of the elastic member to protrude from the bottom plate. At this time, the elastic member is in a free extension state, the edge detection component 8 releases contact with the surface of the glass and is triggered, and sends a signal to the controller of the surface cleaning device 100. The controller determines the position change of the surface cleaning device 100 based on the signal to prevent the risk of the surface cleaning device 100 falling from the edge.

[0159] When the glass is framed, the edge detection component 8 is always in contact with the glass surface. When the surface cleaning device 100 encounters an obstacle (such as the glass frame), the anti-collision component 2 is forced to retract to one side of the device body 1. The anti-collision component 2 triggers the collision sensor. The collision sensor is triggered and sends a collision signal to the controller of the surface cleaning device 100. The controller determines that the surface cleaning device 100 has been collided based on the collision signal, so as to determine that the surface cleaning device 100 has reached the glass frame.

[0160] However, since the anti-collision component 2 is located on the outer periphery of the device body 1, and the edge detection component 8 can protrude outward from the bottom end of the base plate under the action of the elastic component, when the surface cleaning device 100 cleans the edge area of ​​the surface to be cleaned, the anti-collision component 2 and the edge detection component 8 will contact or be suspended in the air with the glass frame or edge before the wiping cloth. The wiping cloth cannot fully extend to the outermost edge of the surface to be cleaned (e.g., the dead corner of the window frame), resulting in a cleaning blind spot in the edge area of ​​the surface to be cleaned, which cannot be effectively cleaned, affecting the overall cleaning effect of the surface cleaning device 100.

[0161] To address the aforementioned issues, in this embodiment, the scraper is movable relative to the device body 1 and has a raised position and a lowered position. In the lowered position, the scraper can swing downwards and outwards to bypass the obstruction of the anti-collision member 2, scraping dirt from the edge area of ​​the surface to be cleaned towards the device body 1 for cleaning. This effectively cleans the edge area of ​​the surface to be cleaned, improving the cleaning effect of the surface cleaning device 100. Simultaneously, in the raised position, the scraper is located on the side of the anti-collision member 2 facing the device body 1 and is higher than the working surface. This prevents the scraper from interfering with obstacles during normal cleaning or in the event of a collision, improving the scraper's lifespan and the operational safety of the surface cleaning device 100.

[0162] The surface cleaning apparatus provided in the embodiments of this application will be further described below with reference to the accompanying drawings.

[0163] Figure 2 for Figure 1 A schematic diagram of the surface cleaning device 100 from another perspective. Figure 3 for Figure 1 A schematic diagram of the surface cleaning device 100 from another perspective.

[0164] Please refer to Figures 1 to 3 This application provides a surface cleaning device 100, including a device body 1. The device body 1 is configured to adhere to and move on the surface to be cleaned. The device body 1 has a working surface 13, which is used to adhere to the surface to be cleaned to clean the surface, so as to remove dust or other dirt from the surface to be cleaned.

[0165] To prevent the device body 1 from colliding with obstacles during movement, the surface cleaning device 100 also includes a collision avoidance member 2. The collision avoidance member 2 is disposed on the outer periphery of the device body 1 and is movably connected to the device body 1 so that the collision avoidance member 2 can move toward one side of the device body 1.

[0166] For example, when cleaning windows, if the surface cleaning device 100 hits the window frame or wall during movement, the anti-collision member 2 will first contact the window frame or wall. At the same time, after being squeezed, the anti-collision member 2 will move towards the side of the device body 1, thereby preventing the device body 1 from directly hitting the window frame or wall and protecting the device body 1.

[0167] Based on this, while the anti-collision component 2 moves toward one side of the device body 1, it can also send a signal to the control device of the surface cleaning device so that the control device can control the surface cleaning device to turn, move backward or stop moving in order to avoid further collisions.

[0168] The anti-collision component 2 can be a ring-shaped buffer ring, a segmented buffer strip, or a partially arc-shaped anti-collision frame. The material of the anti-collision component 2 can be elastic rubber, silicone, foamed elastomer, or plastic parts covered with flexible materials. The outer circumference thickness and outer diameter of the anti-collision component 2 are slightly larger than the edge of the device body 1, so that the collision contact occurs preferentially on the anti-collision component 2 rather than the device body 1, ensuring that the anti-collision component 2 can effectively absorb the collision energy.

[0169] Because the anti-collision member 2 is movably connected to the device body 1, it can move further toward one side of the device body 1 when subjected to continuous pressure from an obstacle. This movement of the anti-collision member 2 toward the device body 1 provides a greater buffer stroke, thereby absorbing collision energy and further improving the protection of the device body 1.

[0170] In this embodiment, no restrictions are placed on the connection method between the anti-collision component 2 and the device body 1, and an adaptive selection can be made according to actual needs.

[0171] For example, the bottom of the anti-collision member 2 is provided with a slide rail, and the device body 1 is provided with a corresponding slide groove 425. At the same time, a spring is provided between the anti-collision member 2 and the device body 1 so that when the anti-collision member 2 is squeezed, it can smoothly slide and retract toward one side of the device body 1, and return to the initial position by the spring after the obstacle disappears.

[0172] Because the anti-collision member 2 protrudes from the outer periphery of the device body 1, the surface cleaning device 100 has a cleaning blind spot when cleaning the edge area of ​​the surface to be cleaned. In order to clean the dirt in the edge area, the surface cleaning device 100 also includes a scraper assembly 3, which is disposed on one side of the device body 1 in the first direction x.

[0173] Figure 4 for Figure 3 A schematic diagram of the mid-surface cleaning device 100 after removing the mounting bracket 11 and the cleaning component 12. Figure 5 for Figure 1 A schematic cross-sectional view of the intermediate surface cleaning device 100 in the AA direction. Figure 6 for Figure 3 A schematic cross-sectional view of the intermediate surface cleaning device 100 in the BB direction.

[0174] It should be noted that, Figure 5 The front-back direction is the front-back direction in the first direction x, and the up-down direction is the up-down direction in the second direction z.

[0175] Please refer to Figure 1 , Figures 4 to 6 The scraper assembly 3 includes a scraper 32, which is movable relative to the device body 1 and has a raised position and a lowered position. When the surface cleaning device 100 needs to clean the edge area of ​​the surface to be cleaned, the scraper 32 is controlled to switch from the raised position to the lowered position. In the raised position, at least a portion of the scraper 32 is located on the side of the anti-collision member 2 facing the device body 1, and along the second direction z, the bottom edge of the scraper 32 is away from the working surface 13 of the device body 1 and is located above the working surface 13. This prevents the scraper 32 from interfering with obstacles during routine cleaning or in the event of a collision, improving the service life of the scraper 32 and the operational safety of the surface cleaning device 100.

[0176] Wherein, the first direction x is the direction of movement of the device body 1, and the second direction z is the height direction of the device body 1.

[0177] Specifically, when the surface cleaning device 100 moves to the edge area of ​​the surface to be cleaned and needs to clean the dirt in the blind spots, the scraper 32 can switch to the lowered position. In the lowered position, the scraper 32 is located on the side of the anti-collision member 2 away from the device body 1, and the bottom edge of the scraper 32 is on the same plane as the working surface 13, so that the scraper 32 can be in a downward outward swinging state in the lowered position and is located in front of the anti-collision member 2 in the first direction x, so as to pass over the obstruction of the anti-collision member 2. In this way, when the device body 1 moves backward along the first direction x, since the scraper 32 is in the lowered position, as the device body 1 moves backward, the scraper 32 can scrape the dirt in the edge area of ​​the surface to be cleaned toward the device body 1 for cleaning, thereby achieving thorough cleaning of the surface to be cleaned without dead corners and improving the cleaning effect of the surface cleaning device 100 on the surface to be cleaned.

[0178] Correspondingly, in the raised position, the scraper 32 is located on the side of the anti-collision member 2 facing the device body 1 and is higher than the working surface 13, so that the scraper 32 can be in an upward and inward state when in the raised position. This can prevent the scraper 32 from contacting the surface to be cleaned when the surface cleaning device 100 is performing the cleaning task, thereby improving the service life of the scraper 32 and preventing the scraper 32 from affecting the movement of the device body 1 on the surface to be cleaned due to outward swing.

[0179] Please refer to Figure 1 , Figures 4 to 6 In order to enable automatic switching of the scraper 32 between the raised and lowered positions, the surface cleaning device 100 also includes a drive assembly 4, which is disposed on the side of the device body 1 near the scraper assembly 3 along the first direction x.

[0180] Specifically, the drive assembly 4 includes a drive motor 41 and a motion frame 42. The scraper 32 is movably connected to the motion frame 42. The drive motor 41 drives the motion frame 42 to reciprocate along the first direction x, so as to drive the scraper 32 to switch between the raised position and the lowered position.

[0181] For example, when the scraper 32 needs to be lowered to clean the edge, the drive motor 41 starts and drives the motion frame 42 to move forward along the first direction x. During the forward movement of the motion frame 42, the scraper 32 moves relative to the device body 1, causing the scraper 32 to swing downward and outward, completing the process of switching from the raised position to the lowered position.

[0182] When the edge cleaning is completed and the scraper 32 needs to be lifted, the drive motor 41 drives the motion frame 42 to move backward along the first direction x. During the backward movement of the motion frame 42, the scraper 32 is pulled to move in the opposite direction relative to the device body 1, so that the scraper 32 retracts upward and inward, completing the process of switching from the lowering position to the lifting position.

[0183] It is understandable that since the drive component 4 is located on the side of the device body 1 close to the scraper component 3, the transmission path between the drive component 4 and the scraper component 3 can be shortened, so that the motion frame 42 controls the scraper 32 to switch between the raised position and the lower position with a shorter stroke, thus realizing a fast response and precise control of the position switching of the scraper 32.

[0184] Please refer to Figure 3 In some embodiments, the device body 1 includes a mounting bracket 11 and a cleaning component 12. The cleaning component 12 is disposed on the bottom surface of the mounting bracket 11, and the side of the cleaning component 12 facing away from the mounting bracket 11 forms a working surface 13.

[0185] Specifically, the mounting bracket 11 is used to support the cleaning component 12, which is used to directly contact the surface to be cleaned to remove dirt.

[0186] The cleaning component 12 can be detachably fixed to the mounting bracket 11 by means of Velcro, clips or magnetic attraction, so that the user can remove the cleaning component 12 for cleaning or replacement.

[0187] For example, the cleaning component 12 can be a cleaning cloth, a cleaning sponge, or a flexible fiber pad with water and dust absorption functions. This embodiment does not impose any restrictions on this.

[0188] Please refer to Figure 5 and Figure 6 In this embodiment, there is a channel 14 between the mounting bracket 11 and the bottom of the anti-collision member 2 for the scraper 32 to pass through, so as to provide a space for the movement of the scraper 32.

[0189] Specifically, when the scraper 32 is in the raised position, its bottom edge can move away from the working surface 13, allowing it to be positioned above the working surface 13 in the second direction z. This ensures that when the surface cleaning device 100 cleans the non-edge areas of the surface to be cleaned, the scraper 32 can move away from the surface, preventing interference between the scraper 32 and the cleaning component 12 and ensuring proper cleaning. Simultaneously, when the scraper 32 is in the lowered position, its bottom edge can be on the same plane as the working surface 13, facilitating the removal of dirt from the surface.

[0190] In some embodiments, the extension direction of the channel 14 matches the movement trajectory of the scraper 32 as it switches between the raised and lowered positions, i.e., the extension direction of the channel 14 is the same as or similar to the movement trajectory of the scraper 32, to ensure the smooth movement of the scraper 32 within the channel 14.

[0191] For example, the size of the channel 14 is slightly larger than the size of the scraper 32, so that the scraper 32 will not rub against the inner wall of the channel 14 during its movement within the channel 14. This maintains the smooth movement of the scraper 32 while preventing the scraper 32 from being damaged due to frequent friction, thus extending the service life of the scraper 32.

[0192] Figure 7 This is a schematic diagram showing the scraper assembly 3 and the drive assembly 4 in the lowered position. Figure 8 for Figure 7 A structural diagram from another perspective. Figure 9 This is a schematic diagram showing the scraper assembly 3 and the drive assembly 4 in the raised position.

[0193] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the drive assembly 4 further includes a fixing member 43, which is disposed on the device body 1 and fixed relative to the device body 1. The drive motor 41 is disposed on the motion frame 42, and the output end of the drive motor 41 has a rotating member 411, which is connected to the fixing member 43 and can rotate relative to the fixing member 43 and reciprocate along the first direction x.

[0194] Specifically, the fastener 43 can be fixed to the device body 1 by screws, clips or other means, and this embodiment does not impose any restrictions on this.

[0195] In this embodiment, the fixing member 43 is fixed relative to the device body 1, and the rotating member 411 is connected to the fixing member 43 in a transmission manner. When the drive motor 41 drives the rotating member 411 to rotate, since the fixing member 43 remains stationary, it can limit the rotation of the rotating member 411, thus converting the rotational motion of the rotating member 411 into a linear displacement along the first direction x. In this way, by controlling the forward and reverse rotation of the drive motor 41, the rotating member 411 can be driven to reciprocate relative to the fixing member 43 along the first direction x.

[0196] Since the drive motor 41 is mounted on the motion frame 42, the linear displacement of the rotating component 411 can directly drive the motion frame 42 and the scraper 32 connected to the motion frame 42 to move synchronously along the first direction x, thereby realizing the switching of the scraper 32 between the lifting position and the lowering position.

[0197] In this embodiment, the drive motor 41 is directly mounted on the motion frame 42 and cooperates with the fixing member 43 fixed on the device body 1. This eliminates the need for additional complex linear guide rails and push rod structures outside the motion frame 42, making the overall structure of the drive assembly 4 more compact. This effectively reduces the space occupied by the drive assembly 4 inside the device body 1 and improves the utilization rate of the internal space.

[0198] For example, the rotating component 411 can be the nut in a lead screw and nut mechanism, and the fixing component 43 can be a lead screw that is threadedly engaged with the nut. The drive motor 41 drives the nut to rotate. Under the thread limit of the lead screw, the rotating nut cannot stay in its original position and can only translate along the axial direction of the lead screw, i.e., the first direction x.

[0199] Understandably, based on the self-locking characteristic of the screw drive, when the drive motor 41 stops, the rotating part 411 can stably suspend and lock the moving frame 42 and the scraper 32 in the current raised or lowered position, which prevents the scraper 32 from shifting position due to external force during the cleaning operation, and further improves the working stability and reliability of the surface cleaning device 100.

[0200] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the motion frame 42 includes a drive section 421 and two connecting sections 422. Along the second direction z, the drive section 421 is disposed on top of the fixing member 43, and the rotating member 411 is disposed at the bottom of the drive section 421. The two connecting sections 422 are distributed on both sides of the drive section 421 in the third direction y, and are respectively movably connected to the ends of the scraper 32 in the third direction y, which is the width direction of the device body 1.

[0201] Wherein, the third direction y is the width direction of the device body 1, and any two of the first direction x, the second direction z and the third direction y are perpendicular to each other.

[0202] Specifically, since the drive section 421 is located at the top of the fixed member 43, and the rotating member 411 is located at the bottom of the drive section 421 and is connected to the fixed member 43 in a transmission manner, when the drive motor 41 drives the rotating member 411 to rotate, the drive section 421 will reciprocate along the fixed member 43 in the first direction x.

[0203] During the movement of the drive section 421, the two connecting sections 422 distributed on both sides of the drive section 421 move along the first direction x under the drive of the drive section 421. Since the two connecting sections 422 are movably connected to both ends of the scraper 32 in the width direction, the two connecting sections 422 act simultaneously on both ends of the scraper 32 when they move, so that the scraper 32 can obtain a uniform and synchronous driving force at both ends, ensuring the synchronicity and stability of the overall movement of the scraper 32, and avoiding the problem of tilting or jamming of the scraper 32 due to force on one side.

[0204] Meanwhile, by setting the drive section 421 on top of the fixing member 43 and the rotating member 411 cooperating with the fixing member 43 at the bottom, a stacked layout is formed in the second direction z, which can reduce the space occupied by the drive assembly 4 in the first direction x and the third direction y, and improve the space utilization and structural compactness of the device body 1.

[0205] It should be noted that the drive segment 421 and the two connecting segments 422 can be an integrally formed structure, or the drive segment 421 and the two connecting segments 422 can be separately set and fixedly connected. This embodiment does not impose any restrictions on this, and can make an adaptive selection according to actual needs.

[0206] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, an installation space 423 is formed between the drive segment 421 and the two connecting segments 422, a fixing member 43 is disposed in the installation space 423, and a rotating member 411 is disposed on the side of the drive segment 421 facing the installation space 423.

[0207] Specifically, the motion frame 42 is an overall enclosed structure with an opening. The fixing member 43 is accommodated and confined within the installation space 423, which is formed by the drive section 421 and two connecting sections 422. The rotating member 411 is located on the side of the drive section 421 facing the installation space 423, so that the rotating member 411 can directly extend into the installation space 423 to engage with the fixing member 43. When the drive motor 41 drives the rotating member 411 to rotate, the drive section 421 can reciprocate relative to the fixing member 43 along the first direction x, and synchronously drive the connecting sections 422 on both sides to move.

[0208] It is understandable that by placing the fixing member 43 within the installation space 423, the transmission engagement portion of the rotating member 411 and the fixing member 43 can be embedded within the area enclosed by the motion frame 42, forming a nested arrangement. Compared to placing the fixing member 43 outside the motion frame 42 or arranging it side by side with the motion frame 42, the nested arrangement can make full use of the internal space of the motion frame 42, avoiding the transmission components protruding outwards and occupying additional space, thereby reducing the overall volume occupied by the drive assembly 4 within the device body 1, and improving the structural compactness and space utilization of the surface cleaning device 100.

[0209] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the fixing member 43 has a rack groove 431, and the rotating member 411 engages with the rack groove 431 for transmission.

[0210] Specifically, when the drive motor 41 starts and drives the rotating component 411 to rotate, since the rotating component 411 meshes with the rack groove 431 on the fixed component 43, the rotating component 411 is guided and limited by the tooth direction of the rack groove 431 while rotating, thus directly converting the rotational motion of the rotating component 411 into linear movement along the first direction x. As the rotating component 411 translates along the first direction x, it drives the drive section 421 and the connecting sections 422 on both sides to move synchronously, and then drives the scraper 32 to complete the position switching between the lifting position and the lowering position in the channel 14 through the connecting sections 422.

[0211] For example, the rotating component 411 can be a gear, and the fixing component 43 has a rack groove 431 extending along the first direction x. The gear teeth are engaged in and mesh with the rack groove 431. Driven by the drive motor 41, the gear rolls in the rack groove 431, thereby smoothly outputting linear displacement to drive the motion frame 42 to move.

[0212] It is understandable that by using the rotating part 411 to mesh with the rack groove 431, the sliding friction in the transmission process is converted into rolling friction, which reduces the transmission resistance and improves the transmission efficiency.

[0213] Based on this, in the meshing state, because multiple pairs of teeth participate in contact and meshing simultaneously, the force on the moving frame 42 during reciprocating movement is more even, avoiding jamming or localized wear caused by single-point force. At the same time, it also enables precise control of the displacement of the moving frame 42, ensuring that the stroke height of the scraper 32 is consistent with each rise and fall, thus guaranteeing the accuracy of position switching.

[0214] In addition, the rack groove 431 can precisely guide the movement of the rotating part 411, preventing the moving frame 42 from slipping or deviating during reciprocating movement, making the switching action of the scraper 32 between the lifting and lowering positions more precise and smooth, thereby ensuring the working reliability of the surface cleaning device 100.

[0215] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the fixing member 43 has a guide groove 432 extending along a first direction x. The driving segment 421 has a raised guide structure 4211 on the side facing the fixing member 43, and the guide structure 4211 is slidably connected to the guide groove 432.

[0216] Specifically, since the guide groove 432 extends along the first direction x, and the protruding guide structure 4211 forms a sliding connection with the guide groove 432, when the drive motor 41 drives the rotating component 411 to rotate and causes the drive segment 421 to reciprocate relative to the fixed component 43 along the first direction x, the inner wall of the guide groove 432 can limit the guide structure 4211, that is, restrict the degree of freedom of the drive segment 421 in directions other than the first direction x. This ensures that the drive segment 421 can only slide linearly along the extension direction of the guide groove 432 without deflection.

[0217] In addition, the sliding connection between the guide structure 4211 and the guide groove 432 can withstand and absorb the lateral force that may be generated during the movement, and prevent the motion frame 42 from shifting or shaking during the reciprocating movement. This makes the movement trajectory of the scraper 32 more stable and accurate when switching between the lifting and lowering positions, and further improves the motion accuracy and working reliability of the drive component 4.

[0218] For example, the cross-sectional shape of the guide groove 432 can be T-shaped or rectangular, etc., and the cross-sectional shape of the guide structure 4211 can be T-shaped, rectangular or cylindrical, etc., which are adapted to the guide groove 432. This embodiment does not impose any restrictions on this.

[0219] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the guide groove 432 has a front groove wall and a rear groove wall that are disposed opposite to each other in the first direction x, and the rear groove wall is disposed close to the center of the device body 1 relative to the front groove wall.

[0220] Specifically, when the scraper 32 is in the raised position, the guide structure 4211 slides to and contacts the rear groove wall. At this time, the rear groove wall can block the guide structure 4211, preventing the guide structure 4211 from continuing to move in the first direction x, thereby enabling the scraper 32 to be stably and accurately maintained in the raised position.

[0221] When the scraper 32 is in the descending position, the guide structure 4211 slides to and contacts the front groove wall. At this time, the front groove wall blocks the guide structure 4211, which also prevents the guide structure 4211 from continuing to move in the first direction x, so that the scraper 32 can be stably and accurately kept in the descending position.

[0222] This ensures that the guide structure 4211 can abut against the corresponding groove wall whether the scraper 32 is in the raised or lowered position, effectively eliminating the assembly gap between the guide structure 4211 and the guide groove 432 in the first direction x. This avoids the vibration or shaking caused by loose fit when the scraper 32 is in contact with the surface to be cleaned, further improving the stability of the scraper 32 at the extreme working position and improving the cleaning effect and working reliability of the surface cleaning device 100.

[0223] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the guide structure 4211 includes a guide post 4211a and a bushing 4211b. At least a portion of the guide post 4211a is disposed in the guide groove 432. The bushing 4211b is rotatably sleeved on the guide post 4211a and slidably connected to the guide groove 432 to achieve a sliding connection between the guide structure 4211 and the guide groove 432.

[0224] Specifically, when the drive section 421 drives the guide structure 4211 to reciprocate along the first direction x in the guide groove 432, since the bushing 4211b is sleeved on the guide post 4211a, the bushing 4211b will be subjected to the friction force of the inner wall of the guide groove 432 during the translation process of following the guide post 4211a, and thus rotate around the axis of the guide post 4211a.

[0225] This converts the sliding friction between the guide structure 4211 and the inner wall of the guide groove 432 into rolling friction, thereby reducing frictional resistance during relative motion, reducing wear and heat generation between components, and making the movement of the drive section 421 driving the scraper 32 between the lifting and lowering positions smoother. It avoids jamming caused by excessive friction and further improves the service life and movement stability of the drive assembly 4.

[0226] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the fixing member 43 has two guide grooves 432, which are distributed on both sides of the rack groove 431 in the third direction y. The driving section 421 is provided with a guide structure 4211 at the position corresponding to each guide groove 432.

[0227] Specifically, by setting guide grooves 432 on both sides of the rack groove 431 in the third direction y, and setting two guide structures 4211 on the drive section 421, the drive section 421 can be subjected to symmetrical and balanced guide support forces on both sides when it moves along the first direction x, so as to avoid the drive section 421 from tilting or deflecting during the movement, thereby further improving the stability and straightness of the movement of the motion frame 42, and thus ensuring the stability of the movement of the scraper 32.

[0228] For example, the number of guide slots 432 is not limited to one or two, and can be set to more as needed.

[0229] For example, three guide grooves 432 can be provided on the fixing member 43, one of which is located on one side of the rack groove 431, and the other two guide grooves 432 are arranged side by side on the other side of the rack groove 431; or, four guide grooves 432 can be provided on the fixing member 43, with two guide grooves 432 symmetrically distributed on each side of the rack groove 431; or, multiple guide grooves 432 can also be arranged in other array forms such as staggered arrangement or unequal spacing on the fixing member 43. This embodiment does not impose any restrictions on this.

[0230] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the drive section 421 has a protrusion 4212 on the side facing the fixing member 43. The protrusion 4212 is inserted into the rack groove 431, and a first roller 4213 is provided on the protrusion 4212. The first roller 4213 makes rolling contact with the bottom plate 15 of the device body 1.

[0231] Specifically, the fastener 43 is installed on the base plate 15 of the device body 1. For example, the fastener 43 can be fixed to the base plate 15 by screws through a threaded connection, or it can be snapped onto the base plate 15 by a snap-fit ​​structure to ensure the stability of the position of the fastener 43 during operation.

[0232] The protrusion 4212 on the drive section 421 extends into the rack groove 431, and the first roller 4213 mounted on the protrusion 4212 passes through the rack groove 431 and presses against the surface of the base plate 15. During the process of the drive section 421 driving the scraper 32 to reciprocate along the first direction x, the contact between the first roller 4213 and the base plate 15 can convert the sliding friction of the drive section 421 relative to the base plate 15 into rolling friction between the first roller 4213 and the base plate 15.

[0233] Understandably, rolling contact can reduce the frictional resistance when the drive section 421 moves, reduce wear and energy loss between components, and make the movement of the motion frame 42 driving the scraper 32 to switch between the lifting and lowering positions smoother. This avoids the phenomenon of movement jamming caused by excessive friction and improves the transmission efficiency and running stability of the drive assembly 4.

[0234] Meanwhile, the first roller 4213 can also support the drive section 421 so that the drive section 421 will not tilt or shake when it is driven by the drive motor 41 to move relative to the fixed part 43, thereby ensuring the stability of the motion frame 42 as a whole during reciprocating movement.

[0235] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the connecting section 422 is provided with a second roller 4221, which makes rolling contact with the base plate 15 in the device body 1.

[0236] Similarly, during the process of the drive section 421 driving the connecting section 422 to reciprocate along the first direction x, the contact between the second roller 4221 and the base plate 15 can transform the sliding friction of the connecting section 422 relative to the base plate 15 into rolling friction between the second roller 4221 and the base plate 15, thereby reducing the frictional resistance of the connecting section 422 during movement, avoiding the phenomenon of movement jamming caused by excessive friction, and further improving the transmission efficiency and running stability of the drive assembly 4.

[0237] Meanwhile, the second roller 4221 can also support the connecting section 422 so that the connecting section 422 will not tilt or shake when it moves relative to the fixed part 43 under the drive of the drive section 421, thereby ensuring the stability of the motion frame 42 when it moves back and forth as a whole.

[0238] It should be noted that the first roller 4213 can be provided only on the drive section 421, the second roller 4221 can be provided only on the connecting section 422, or both the first roller 4213 and the second roller 4221 can be provided. Furthermore, this embodiment does not limit the number of the first roller 4213 and the second roller 4221; they can be selected adaptively according to actual needs.

[0239] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the surface cleaning device 100 further includes a pressure strip 5 extending along a first direction x and positioned above the motion frame 42 in a second direction z.

[0240] Specifically, the pressure strip 5 is fixedly installed on the base plate 15 and blocks the motion frame 42 in the second direction z. Thus, during the operation, drop or transportation of the surface cleaning device 100, the pressure strip 5 can block the displacement of the motion frame 42 in the second direction z, avoid transmission failure caused by the disengagement of the rotating part 411 and the fixed part 43, and thus ensure the stability and reliability of the drive assembly 4.

[0241] Please refer to Figure 4 , Figures 7 to 9 In some embodiments, the surface cleaning device 100 further includes a first positioning detection element 6 and a second positioning detection element 7, with the second positioning detection element 7 located in front of the first positioning detection element 6 along the first direction x.

[0242] Specifically, the motion frame 42 has a detection part 424. When the detection part 424 moves along the first direction x to the first positioning detection member 6, it can cooperate with the first positioning detection member 6 to detect whether the scraper 32 is in the raised position. When the detection part 424 moves along the first direction x to the second positioning detection member 7, it can cooperate with the second positioning detection member 7 to detect whether the scraper 32 is in the lowered position.

[0243] In this way, when the detection part 424 is detected to have reached the corresponding position, the drive motor 41 can be controlled to stop running, thereby realizing the position detection. This allows the drive motor 41 to accurately control the scraper 32 to stay in the raised or lowered position, avoiding structural interference or damage caused by excessive rotation of the drive motor 41.

[0244] For example, both the first positioning detection element 6 and the second positioning detection element 7 can be optical couplers. Each optical coupler includes a light-emitting part and a receiving part arranged opposite to each other. During the movement of the motion frame 42 along the first direction x, when the part to be detected 424 moves with the motion frame 42 between the light-emitting part and the receiving part, it blocks the light path from the light-emitting part to the receiving part, causing a sudden change in the light signal received by the receiving part. Thus, based on the signal change caused by the blocked light path, the optical coupler can immediately output a corresponding positioning signal to the control module, achieving accurate detection of the position of the scraper 32.

[0245] In other embodiments, the first positioning detection element 6 and the second positioning detection element 7 can also be microswitches. The detection part 424 can be an abutment protrusion provided on the motion frame 42. During the movement of the motion frame 42 along the first direction x, when the detection part 424 moves with the motion frame 42 to the microswitch, it will directly press the contact button of the microswitch, causing the internal circuit of the microswitch to close or open, thereby outputting a positioning signal to the control module.

[0246] It is understood that this embodiment does not impose any restrictions on the specific structure of the first positioning detection element 6 and the second positioning detection element 7. The first positioning detection element 6 and the second positioning detection element 7 can both be optocoupler detection elements, or one of them can be an optocoupler detection element and the other can be a micro switch or other structure that can realize positioning detection. Those skilled in the art can make adaptive selections according to actual needs.

[0247] Please refer to Figures 4 to 6 In some embodiments, the scraper assembly 3 further includes a lifting bracket 35, which is connected between the scraper 32 and the motion frame 42. The lifting bracket 35 is configured to be able to rise and fall relative to the motion frame 42 during the movement of the motion frame 42, so as to drive the scraper 32 to switch between a raised position and a lowered position.

[0248] It should be noted that the motion frame 42 translates along the first direction x under the drive of the drive assembly 4, while the scraper 32 needs to change position along the second direction z. The lifting bracket 35, as a transmission structure connecting the motion frame 42 and the scraper 32, can convert the horizontal displacement of the motion frame 42 in the first direction x into the displacement of the scraper 32 in the second direction z, so as to realize the switching of the scraper 32 between the raised position and the lowered position.

[0249] For example, the motion frame 42 may be provided with a guide ramp extending obliquely along the first direction x, and the lifting bracket 35 may be provided with a sliding column that slides in cooperation with the guide ramp. When the motion frame 42 slides along the first direction x, the sliding column slides relative to the oblique guide ramp. Under the constraint of the ramp, the sliding column together with the lifting bracket 35 is forced to move upward or downward relative to the motion frame 42, thereby driving the scraper 32 fixed on the lifting bracket 35 to switch between the descending position and the ascending position.

[0250] Please refer to Figures 4 to 6 In some embodiments, the position where the motion frame 42 connects to the lifting bracket 35 has a groove 425, which extends along the second direction z. The first end of the lifting bracket 35 is slidably connected to the groove 425, and the second end of the lifting bracket 35 is connected to and relatively fixed to the scraper 32.

[0251] Specifically, the first end of the lifting bracket 35 is configured to move along the slide groove 425 during the movement of the moving frame 42, and drive the second end to move synchronously. Since the slide groove 425 extends along the second direction z, it can guide and constrain the first end, forcing the first end to slide linearly relative to the moving part along the second direction z.

[0252] It should be noted that, as the motion frame 42 moves back and forth in the first direction x, the motion frame 42 will also drive the first end to move synchronously in the first direction x, so that the actual motion trajectory of the first end of the lifting bracket 35 is a composite motion of the first direction x and the second direction z. The composite motion is transmitted to the second end through the lifting bracket 35, so that the scraper 32 can move simultaneously with the position shift in the first direction x during the lifting and switching process.

[0253] When the scraper 32 switches from the lowering position to the raising position, the moving frame 42 moves backward along the first direction x, while the first end slides upward relative to the moving frame 42 in the second direction z within the slide groove 425. Under the combined effect of these two movements, the second end drives the scraper 32 to move along an obliquely upward and backward trajectory, achieving a retraction backward and towards the inside of the device body 1. This allows the scraper 32 to retract inward during raising and avoidance, effectively reducing space occupation in the non-working state and avoiding interference with other components.

[0254] Conversely, when the scraper 32 switches from the raised position to the lowered position, the moving frame 42 moves forward along the first direction x, while the first end slides downward relative to the moving frame 42 in the second direction z within the slide groove 425. Under the combined effect of these two movements, the second end drives the scraper 32 to move along a diagonally forward and downward trajectory, achieving a forward and outward swing extension of the device body 1. This allows the scraper 32 to swing outward during the lowering operation, ensuring the effective scraping area of ​​the scraper 32 and guaranteeing its cleaning effect.

[0255] Please refer to Figures 4 to 6 In some embodiments, the scraper assembly 3 further includes a third roller 33 and a connecting shaft 34. The third roller 33 is disposed in the slide groove 425, and the second connecting shaft 34 passes through the third roller 33 and is connected to the first end of the lifting bracket 35 to achieve a sliding connection between the first end of the lifting bracket 35 and the slide groove 425.

[0256] Specifically, the first end of the lifting bracket 35 is fixed relative to the third roller 33 via the connecting shaft 34. When the first end of the lifting bracket 35 moves relative to the moving frame 42 in the second direction z within the slide groove 425, it drives the third roller 33 to roll synchronously within the slide groove 425. This transforms the original sliding contact between the first end and the inner wall of the slide groove 425 into rolling contact, reducing the frictional resistance between the first end and the slide groove 425. This makes the movement of the lifting bracket 35 within the slide groove 425 smoother, avoiding jamming caused by excessive sliding frictional resistance, and further improving the flexibility and reliability of the scraper 32 when switching between the lifting and lowering positions.

[0257] Please refer to Figure 5 , Figure 6 and Figure 8 In some embodiments, the lifting bracket 35 has two opposite and spaced connecting arms 351 at the first end, and the connecting shaft 34 is disposed between the two connecting arms 351.

[0258] Specifically, in this embodiment, the first end of the lifting bracket 35 has a "U"-shaped structure, and the two ends of the connecting shaft 34 are respectively connected to two connecting arms 351. The third roller 33 is located in the gap between the two connecting arms 351 and is sleeved on the connecting shaft 34. When the scraper 32 switches between the lowering position and the raising position, the two connecting arms 351 can form a stable clamping support for the third roller 33 from the opposite sides of the connecting shaft 34.

[0259] This allows the connecting arms 351 on both sides to evenly distribute the load, preventing the connecting shaft 34 and the third roller 33 from tilting or deflecting laterally during movement, and improving the stability of the scraper 32 when switching positions.

[0260] Please refer to Figure 5 , Figure 6and Figure 8 In some embodiments, one end of the slide 425 has a slot 4251 facing the top of the device body 1. A first limiting member 44 is provided at the slot 4251. The first limiting member 44 is connected to the motion frame 42 and blocks the slot 4251.

[0261] Specifically, since the slot 4251 is open towards the top of the device body 1, the third roller 33 can be directly placed into the slide groove 425 from top to bottom during assembly, thus facilitating the installation of the third roller 33. After the third roller 33 is assembled in place, the slot 4251 is blocked by the first limiting member 44 to prevent the third roller 33 from detaching from the slide groove 425 upwards from the slot 4251 during the movement of the lifting bracket 35 driving the scraper 32.

[0262] In this embodiment, the first limiting member 44 and the motion frame 42 are detachably connected, such as by snap-fit, screw-fit, or other detachable connection methods. This not only prevents the third roller 33 from disengaging through the first limiting member 44, ensuring the stability of the motion structure, but also facilitates quick assembly and disassembly of the first limiting member 44 during assembly or later maintenance, improving the assembly convenience and maintainability of the scraper assembly 3.

[0263] Please refer to Figures 5 to 9 In some embodiments, the scraper assembly 3 further includes a connecting rod 36, the first end of which is connected to and fixed relative to the second end of the lifting bracket 35. The second end of the connecting rod 36 is inclined relative to its first end toward the bottom of the device body 1 and is connected to and fixed relative to at least a portion of the scraper 32.

[0264] Specifically, since the second end of the connecting rod 36 is inclined relative to the first end towards the bottom of the device body 1, when the moving frame 42 drives the first end of the lifting bracket 35 to move along the first direction x, the displacement transmission of the inclined posture of the connecting rod 36 will force the first end of the lifting bracket 35 to move along the second direction z within the slide groove 425. The combined displacement of the first end translating along the first direction x and sliding along the second direction z is transmitted to the scraper 32 through the inclined connecting rod 36, causing the scraper 32 to generate a displacement in the second direction z during its movement along the first direction x. In this way, the scraper 32 can be retracted backward and inward in the lifting position and swung forward and outward in the lowering position without a complex transmission structure, simplifying the transmission structure of the scraper assembly 3.

[0265] It is understandable that if the connecting rod 36 is set parallel to the first direction x, when the moving frame 42 moves along the first direction x, the first end of the lifting bracket 35 will only translate along the first direction x, and cannot slide in the slide groove 425 along the second direction z, thus failing to drive the scraper 32 to produce displacement in the second direction z.

[0266] Please refer to Figure 5 and Figure 6 In some embodiments, the device body 1 has a limiting channel 16, and the connecting rod 36 is inserted into the limiting channel 16 to guide and limit the movement of the connecting rod 36 through the limiting channel 16, so as to prevent the connecting rod 36 from shaking or deviating during the process of driving the scraper 32 to move.

[0267] In this embodiment, the extension trajectory of the limiting channel 16 is the same as or similar to the movement trajectory of the connecting rod 36. Thus, when the connecting rod 36 moves under the drive of the lifting bracket 35, the limiting channel 16 provides clearance for the connecting rod 36, avoiding interference with its displacement and ensuring the stability of the scraper assembly 3 during lifting and lowering switching.

[0268] Figure 11 This is a partial structural diagram of the surface cleaning device 100 in the lowered position. Figure 12 for Figure 11 A structural diagram showing the removal of the limiting seat 39. Figure 13 This is a schematic diagram of the surface cleaning device 100 in the raised position.

[0269] Please refer to Figure 1 , Figures 11 to 13 In some embodiments, the surface cleaning device 100 further includes an edge detection component 8, which is located in the corner area of ​​the device body 1 and is capable of detecting whether the surface cleaning device 100 is at an edge.

[0270] In this embodiment, the scraper 32 includes a first scraper segment 321 and a second scraper segment 322. The second scraper segment 322 is movably connected to the end of the first scraper segment 321, and the second scraper segment 322 is located closer to the edge detection component 8 than the first scraper segment 321.

[0271] In the raised position, the second scraper segment 322 is bent relative to the first scraper segment 321, and both the first scraper segment 321 and the second scraper segment 322 are located on the inner periphery of the edge detection component 8. In the lowered position, the first scraper segment 321 and the second scraper segment 32 extend in the same direction and are both located on the outer periphery of the edge detection component 8.

[0272] The inner peripheral side refers to the side of the edge detection component 8 that is closer to the device body 1 in the first direction x, and the outer peripheral side refers to the side of the edge detection component 8 that is farther away from the device body 1 in the first direction x.

[0273] In this embodiment, the edge detection component 8 can detect whether the surface cleaning device 100 is at the edge. For example, the edge detection component 8 can detect the surface cleaning device 100 by means of infrared sensor ranging or mechanical edge switch. When the surface cleaning device 100 is detected to have moved to the edge position, the edge detection component 8 sends a detection signal to control the surface cleaning device 100 to stop moving or move in the opposite direction, thereby preventing the device body 1 from falling from the edge or being impacted.

[0274] Specifically, during the process of the scraper 32 switching from the descending position to the rising position, since the second scraper segment 322 is located close to the edge detection component 8, by making the second scraper segment 322 bend relative to the first scraper segment 321, it is possible to avoid the second scraper segment 322 interfering with the edge detection component 8 when it is in the rising position.

[0275] When the device descends, the first scraper segment 321 and the second scraper segment 322 unfold together and fit against the surface to be cleaned in order to scrape and clean the surface.

[0276] It is understandable that when the surface cleaning device 100 moves to the edge of the surface to be cleaned, the edge detection component 8 is usually located at the corner of the edge.

[0277] During the transition from the raised position to the lower position of the scraper 32, the second scraper segment 322 straightens and unfolds from its bent state to move to the front of the edge detection component 8. In this way, the second scraper segment 322 can also clean the corners and edges near the edge detection component 8 during its unfolding process, thereby further reducing the cleaning blind spots of the device body 1 and improving the cleaning effect of the surface cleaning device 100.

[0278] Since the second scraper segment 322 descends and swings to the front of the edge detection component 8 during the descending position, the descending position can be referred to as the swinging position. Similarly, during the lifting position, the second scraper segment 322 rises and bends to the inner periphery of the edge detection component 8, so the lifting position can be referred to as the retraction position.

[0279] Please refer to Figure 1 , Figures 11 to 13 In some embodiments, when in the recovery position and the outward swing position, there is a gap between the second scraper segment 322 and the circumferential outer wall of the edge detection component 8. In this way, when in the recovery position and the outward swing position, the second scraper segment 322 can avoid the edge detection component 8, avoid interference with the edge detection component 8, ensure that the edge detection component 8 can stably perform edge detection work, and improve the overall reliability of the surface cleaning device 100.

[0280] It should be noted that this embodiment does not impose any restrictions on the size of the above-mentioned spacing, and can be adaptively selected according to actual needs.

[0281] Figure 10 for Figure 9 Assembly diagram of the middle scraper assembly 3.

[0282] Please refer to Figure 4 , Figure 5 , Figure 8 and Figure 10 In some embodiments, the scraper assembly 3 further includes a mounting bracket 31 and an adapter 37, wherein the first scraper segment 321 is movably connected to the motion frame 42 via the mounting bracket 31. The adapter 37 has a connecting portion 371 and a first connecting end 372, wherein the connecting portion 371 is rotatably connected to the mounting bracket 31, and the first connecting end 372 is connected to the second scraper segment 322.

[0283] Specifically, the first scraper segment 321 is fixed on the mounting bracket 31, and the mounting bracket 31 is connected to the connecting rod 36 so that it can move under the drive of the connecting rod 36.

[0284] To ensure the stability of motion transmission, the connecting rod 36 has a locking protrusion that engages with the mounting groove on the mounting bracket 31. Through the limiting engagement between the locking protrusion and the mounting groove, a fixed connection is formed between the connecting rod 36 and the mounting bracket 31, effectively preventing relative displacement or slippage between the connecting rod 36 and the mounting bracket 31 during movement, thus ensuring that the displacement of the connecting rod 36 is accurately transmitted to the mounting bracket 31.

[0285] When the connecting rod 36 drives the mounting frame 31 to switch from the retraction position to the outward swing position, the mounting frame 31 synchronously drives the adapter 37 to move. Since the connecting part 371 of the adapter 37 can rotate relative to the mounting frame 31, during the displacement of the mounting frame 31, the first connecting end 372 of the adapter 37 can deflect with the rotation of the adapter 37, and drive the second scraper segment 322 to flip relative to the first scraper segment 321. In this way, driven by the adapter 37, the second scraper segment 322 can gradually extend, thereby realizing the outward swing action of the second scraper segment 322 from the retraction position to the downward swing position.

[0286] Conversely, when the connecting rod 36 drives the mounting bracket 31 to switch from the outward swing position to the raised position, during the displacement of the mounting bracket 31, the first connecting end 372 of the adapter 37 can deflect with the rotation of the adapter 37, and drive the second scraper segment 322 to flip relative to the first scraper segment 321, so that the second scraper segment 322 bends relative to the first scraper segment 321.

[0287] Please refer to Figure 4 , Figure 5 , Figure 8 and Figure 10 In some embodiments, the mounting bracket 31 is inclined relative to the working surface 13, and the mounting bracket 31 is configured to be tiltable relative to the working surface 13.

[0288] Specifically, since the mounting bracket 31 is inclined, when the moving bracket 42 moves along the first direction x, it can cause the mounting bracket 31 to tilt relative to the device body 1. When switching to the outward swing position, the mounting bracket 31 moves downward and forward along its own tilt direction, thereby providing outward movement space for the second scraper segment 322, so that the second scraper segment 322 can swing smoothly to the front of the edge detection component 8 under the drive of the adapter 37.

[0289] Conversely, when switching to the recycling position, the mounting bracket 31 moves upward and backward in the inclined direction, which can cause the second scraper segment 322 to bend and retract inward, so that the second scraper segment 322 retracts to the inner peripheral side of the edge detection component 8, thereby achieving avoidance.

[0290] Please refer to Figure 4 , Figure 5 , Figure 8 and Figure 10 In some embodiments, the first connecting end 372 extends into the second scraper segment 322 and is connected to the second scraper segment 322.

[0291] Specifically, the first connecting end 372 of the adapter 37 is inserted into the interior of the second scraper segment 322 and fixed inside the second scraper segment 322. Since the first connecting end 372 is hidden inside the second scraper segment 322, the outer surface of the second scraper segment 322 can remain flat, without creating an outward protruding connection structure.

[0292] In this way, when the second scraper segment 322 swings outward or retracts relative to the first scraper segment 321, the flat outer surface can prevent the adapter 37 from physically interfering with or getting stuck with the edge detection component 8 or other surrounding structures, thus ensuring the smooth movement of the second scraper segment 322.

[0293] Meanwhile, the first connecting end 372 extends into the second scraper segment 322, increasing the connection area and connection depth between the adapter 37 and the second scraper segment 322. This makes the connection structure more stable and robust when the adapter 37 drives the second scraper segment 322 to rotate, thereby ensuring the reliability of the scraper assembly 3 during operation.

[0294] Please refer to Figure 7 , Figure 8 , Figure 11 and Figure 12 In some embodiments, when in the outward swing position, the first scraper segment 321 and the second scraper segment 322 have an overlapping portion along the length direction of the first scraper segment 321.

[0295] Specifically, when in the outward swing position, the second scraper segment 322 unfolds from the bent state, and the end of the second scraper segment 322 near the first scraper segment 321 overlaps with the first scraper segment 321, thereby connecting the first scraper segment 321 and the second scraper segment 322 in their own length direction, eliminating the cleaning blind spots caused by splicing gaps.

[0296] At the same time, the overlapping part can also support the second scraper segment 322 to ensure structural stability after unfolding, and prevent the second scraper segment 32 from lifting or falling off under the action of scraping resistance, thereby ensuring the cleaning effect of the scraper segment 32.

[0297] It should be noted that this embodiment does not impose any restrictions on the length of the overlapping portion, and can be adapted to meet actual needs.

[0298] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, the surface cleaning device 100 further includes a second limiting member 17 and a third limiting member 9, and the adapter 37 also has a second connecting end 373. Along the first direction x, the second limiting member 17 is located behind the second connecting end 373, and the third limiting member 9 is located in front of the second connecting end 373.

[0299] Specifically, the second limiting member 17 can be disposed on the device body 1, and the third limiting member 9 can be disposed on the device body 1, the anti-collision member 2, or the mounting bracket 31. This embodiment does not impose any restrictions on this.

[0300] When in the raised position, the second connecting end 373 abuts against the second limiting member 17, thereby limiting the extreme angle of the adapter 37 to rotate backward, ensuring that the second scraper segment 322 can be stably in a bent state, while avoiding excessive flipping of the adapter 37 and interference with other structures in the device body 1 or causing mechanical damage.

[0301] When in the descending position, the second connecting end 373 abuts against the third limiting member 9, thereby limiting the maximum angle of forward rotation of the adapter 37, ensuring that the second scraper segment 322 can be stably maintained in the outwardly unfolding descending state, while avoiding the problem of the second scraper segment 322 coming off due to excessive flipping of the adapter 37 or interfering with structures such as the anti-collision member 2.

[0302] It should be noted that only the second limiting member 17 can be provided, only the third limiting member 9 can be provided, or both the second limiting member 17 and the third limiting member 9 can be provided. This embodiment does not impose specific restrictions on this.

[0303] It is understandable that by simultaneously setting the second limiting member 17 and the third limiting member 9, the two extreme positions of the adapter 37 in the raised and lowered positions can be restricted, ensuring that the scraper 32 has accurate positioning in both the outward expansion and inward retraction states, thereby improving the structural stability of the scraper assembly 3.

[0304] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, the second connecting end 373 and the first connecting end 372 have an included angle, and the second connecting end 373 is a bent structure facing away from the first connecting end 372. In the retracted position, the bent structure is hooked onto the second limiting member 17.

[0305] Specifically, the second connecting end 373 and the first connecting end 372 have an included angle, so that the second connecting end 373 forms a bent structure opposite to the first connecting end 372. When the scraper 32 is in the retracted position, the bent structure can hook onto the second limiting member 17, thereby forming a locking engagement between the bent structure and the second limiting member 17.

[0306] When the bending structure is hooked onto the second limiting member 17, the second connecting end 373 can be prevented from going over the second limiting member 17 and coming off, thereby ensuring the stability of the scraper 32 in the recovery position and enhancing the reliability of the limiting structure.

[0307] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, during the process of the scraper 32 switching from the lowered position to the raised position, the circumferential outer wall of the edge detection component 8 is configured to abut against the rear side of the second scraper segment 322 in the first direction x, so as to drive the second scraper segment 322 to bend relative to the first scraper segment 321.

[0308] Specifically, during the process of the scraper 32 switching from the descending position to the rising position, the circumferential outer wall of the edge detection component 8 can abut against the rear side of the second scraper segment 322 in the first direction x, thereby generating a pushing force on the second scraper segment 322. Thus, when the rear side of the second scraper segment 322 in the first direction x is subjected to the pushing force, the second scraper segment 322 can be driven to bend relative to the first scraper segment 321 under the action of the pushing force, causing the scraper 32 to switch from the outward swing position to the retracted position.

[0309] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, the scraper assembly 3 further includes an elastic element 38 connected between the mounting bracket 31 and the adapter 37, and the elastic element 38 is configured to cause the adapter 37 to always have a tendency to move downward with the second scraper segment 322.

[0310] Specifically, the elastic element 38 is connected between the mounting bracket 31 and the adapter 37. The elastic element 38 can be in a pre-compressed state to generate an elastic restoring force towards the descending position. When the scraper 32 is in the descending position, the elastic element 38 continuously releases the elastic restoring force, which acts on the adapter 37, enabling the adapter 37 to stably position the second scraper segment 322 in the descending position. This prevents the second scraper segment 322 from shaking or shifting position during operation, ensuring the stability of the second scraper segment 322 in the descending position and improving the scraping effect of the second scraper segment 322.

[0311] When the scraper 32 switches from the descending position to the retracting position, the adapter 37 moves relative to the mounting bracket 31. At this time, the adapter 37 further compresses the elastic element 38, increasing the accumulated elastic restoring force of the elastic element 38. Thus, when the drive assembly 4 drives the scraper 32 to switch from the retracting position to the descending position, the increased elastic restoring force can provide driving force to the adapter 37, forcing the second scraper segment 322, which is in a bent state, to switch to the unfolded state. This avoids the second scraper segment 322 from getting stuck in the bent state and being unable to reset smoothly, ensuring the smoothness of the scraper 32's state switching and improving the reliability of the scraper assembly 3.

[0312] The elastic element 38 can be a spring or other structural component capable of generating elastic restoring force; this embodiment does not impose any restrictions on it.

[0313] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, the elastic element 38 is a torsion spring, and the mounting bracket 31 has a protruding sleeve portion 311. The torsion spring is sleeved on the sleeve portion 311, and one end of the torsion spring is connected to the mounting bracket 31, while the other end of the torsion spring is movably connected to the adapter 37. During the rotation of the adapter 37, the torsion spring is always in a pre-tensioned state.

[0314] Specifically, the torsion spring is sleeved on the sleeve portion 311 to realize the installation of the torsion spring. The sleeve portion 311 serves as the rotation center for the deformation of the torsion spring and can radially limit the torsion spring to prevent it from radially shifting or detaching from the mounting bracket 31 during the process of being stressed.

[0315] In this embodiment, the torsion spring is pre-tightened during initial assembly. That is, when the scraper 32 is in the initial state of the descending position, the torsion spring has already been torsionped by a certain angle and has pre-stored elastic potential energy inside. The torsion spring in this pre-tightened state will generate a torsional restoring torque, which is opposite to the direction of the adapter 37 rotating from the descending position to the retracting position, so that it can always have the tendency to move the second scraper segment 322 towards the descending position.

[0316] When the scraper 32 is in the descending position, the torsional restoring torque continues to act on the adapter 37, causing the adapter 37 to tend to press the second scraper segment 322 into the descending position, ensuring the stability of the second scraper segment 322 in the descending position and improving the scraping effect of the second scraper segment 322.

[0317] When the adapter 37 overcomes the torsional restoring torque under external force and rotates from the descending position to the retracting position, the torsion spring is further torsioned, increasing the torsional restoring torque. At this time, if the scraper 32 switches from the retracting position back to the descending position, the torsional restoring torque can act on the adapter 37, forcing the adapter 37 to rotate in the opposite direction, so that the second scraper segment 322, which is in a bent state, switches to the unfolded state, preventing the second scraper segment 322 from getting stuck in the bent state, thereby ensuring the smoothness of the scraper 32's state switching and improving the reliability of the scraper assembly 3.

[0318] Please refer to Figure 8 , Figures 10 to 13 In some embodiments, the adapter 37 has a strip groove 3741, and when the first scraper segment 321 is in the descending position, the length direction of the strip groove 3741 is parallel to the length direction of the first scraper segment 321. The other end of the torsion spring is inserted into the strip groove 3741 and can move along the strip groove 3741.

[0319] It is understandable that a torsion spring generates torsional torque, requiring a fixed force reference to withstand the reaction force generated by the torsion spring.

[0320] When the adapter 37 rotates relative to the mounting bracket 31, the movement trajectory of each point on the adapter 37 is an arc shape. However, the movement trajectory of the end of the torsion spring connected to the adapter 37 is a circle with the sleeve portion 311 as the center, which does not completely coincide with the movement trajectory of the adapter 37. At this time, if the torsion spring is fixedly connected to the adapter 37, the torsion spring will be continuously stretched during the rotation of the adapter 37, causing the torsion spring to bend laterally or even jam and break.

[0321] Therefore, in this embodiment, one end of the torsion spring is fixedly connected to the mounting bracket 31 as a force reference, and the other end is movably connected to the adapter 37 through the strip groove 3741 so that the torsional deformation of the torsion spring is converted into a driving force on the adapter 37.

[0322] Specifically, the adapter 37 has a third connecting end 374, on which there is a strip groove 3741. One end of the torsion spring can move along the strip groove 3741, thereby absorbing the error caused by the misalignment of the movement trajectory of the adapter 37 and the torsion spring, avoiding additional interference force, and ensuring the stability of the torsion spring operation.

[0323] In this embodiment, when the first scraper segment 321 is in the descending position, the length direction of the strip groove 3741 is parallel to the length direction of the first scraper segment 321, so that the thrust generated by the torsion spring can be perpendicular to the length direction of the strip groove 3741, so that the adapter 37 remains stationary in the length direction of the first scraper segment 321, avoiding lateral displacement or movement, and further improving the positional stability and scraping effect of the scraper 32 when it is in the descending position.

[0324] Please refer to Figure 3 , Figure 7 and Figure 9 In some embodiments, there are two second scraper segments 322, and the first scraper segment 321 is movably connected to a second scraper segment 322 at both ends in the length direction.

[0325] It is understandable that the edge detection components 8 are usually arranged at the four corners of the device body 1. If only one second scraper segment 322 is provided, the second scraper segment 322 can only cover one edge corner area at one end, while the edge detection component 8 at the other corner of the first scraper segment 321 will lack the coverage of the scraper segment 32, resulting in a cleaning blind spot.

[0326] Therefore, in this embodiment, by setting two second scraper segments 322, which are respectively connected to both ends of the first scraper segment 321, they can respectively correspond to the two edge corner areas at both ends of the first scraper segment 321. When the scraper 32 is in the descending position, the second scraper segments 322 at both ends unfold synchronously, which can effectively scrape the surface to be cleaned at both edge corners at the same time, thereby further reducing the cleaning blind spots at the corners and improving the overall cleaning coverage.

[0327] It should be noted that when there are two second scraper segments 322, there are also two adapters 37 and torsion springs, so as to drive the two second scraper segments 322 to switch between the outward swing position and the retraction position respectively.

[0328] Please refer to Figure 2 , Figure 8 and Figure 11 In some embodiments, the scraper assembly 3 further includes a limiting seat 39, which is disposed above the mounting bracket 31 and forms a limiting cavity with the mounting bracket 31. The sleeve portion 311 and the torsion spring are both located within the limiting cavity. This can shield the torsion spring and the sleeve portion 311, preventing external dust, hair, and other foreign objects from intruding and interfering, thereby avoiding problems such as jamming or obstruction of movement of the torsion spring due to foreign objects entangled in it.

[0329] At the same time, the limiting cavity can also limit the torsion spring, preventing the torsion spring from jumping off the sleeve part 311 during torsional deformation, ensuring that the torsion spring can be stably sleeved on the sleeve part 311 to continuously output elastic force.

[0330] Please refer to Figure 2 , Figure 11 and Figure 12 In some embodiments, the limiting seat 39 has an assembly port 391, the connecting part 371 is inserted into the assembly port 391, and the limiting seat 39 is rotatably connected to it.

[0331] Specifically, the opening size and extension trajectory of the assembly port 391 are the same as or similar to the rotation trajectory of the adapter 37, so that the adapter 37 can rotate smoothly within the assembly port 391 and avoid interference between the adapter 37 and the limit seat 39 during rotation.

[0332] Please refer to Figure 5 and Figure 6 In some embodiments, when the scraper blade 32 is in the outward swing position, a portion of the mounting bracket 31 is positioned along the first direction x to block the front of the adapter 37, thereby enabling the mounting bracket 31 to shield the adapter 37. In this way, when the scraper blade 32 is in the outward swing position and is subjected to a collision or external force from the first direction x, the mounting bracket 31 can absorb and disperse the impact force, preventing the external force from directly acting on the adapter 37 and causing deformation or damage to the adapter 37. This protects the adapter 37 and improves the overall structural strength and impact resistance reliability of the scraper blade assembly 3.

[0333] Please refer to Figure 10 In some embodiments, the mounting bracket 31 has a first groove 312 at the position corresponding to the torsion spring, and the torsion spring is disposed in the first groove 312. The mounting bracket 31 has a second groove 313 at the position corresponding to the adapter 37, and the bottom of the second groove 313 is lower than the bottom of the first groove 312 on the mounting bracket 31. The adapter 37 is disposed in the second groove 313.

[0334] Specifically, the first groove 312 and the second groove 313 can respectively limit the torsion spring and the adapter 37, facilitating installation. At the same time, since the bottom of the second groove 313 is lower than the bottom of the first groove 312, it can avoid the torsion spring during the rotation of the adapter 37, preventing structural interference or mutual compression between the adapter 37 and the torsion spring during relative movement, further ensuring the compactness and reliability of the internal structure of the scraper assembly 3.

[0335] Please refer to Figure 1 , Figure 7 and Figure 9 This application also provides a cleaning system, including a base station and a surface cleaning device 100 in any of the above embodiments. The base station can provide multiple maintenance functions for the surface cleaning device 100, including but not limited to: secure connection, charging, storage, automatic cleaning of the cloth, etc.

[0336] The specific structure of the surface cleaning device 100 has been described in the above embodiments and will not be repeated here.

[0337] The cleaning system provided in this application includes the surface cleaning device 100 described above, and therefore has the beneficial effects of the surface cleaning device 100. By cooperating with the scraper assembly 3, the drive assembly 4 and the anti-collision member 2, while the anti-collision member 2 provides buffering, the scraper 32 can also clean the edge area of ​​the surface to be cleaned, thereby improving the cleaning coverage and operational reliability of the surface cleaning device 100, and thus improving the user experience.

[0338] The embodiments or implementation methods in this application are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts between the embodiments can be referred to each other.

[0339] In the description of this application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "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.

[0340] In the description of this application, it should be understood that the terms “comprising” and “having” as used herein, and any variations thereof, are intended to cover non-exclusive inclusion, for example, a process, method, display structure, product, or device that includes a series of steps or units is not necessarily limited to those steps or units that are expressly listed, but may include other steps or units that are not expressly listed or that are inherent to such process, method, product, or device.

[0341] The term "and / or" used in this application is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this document generally indicates that the preceding and following related objects have an "or" relationship.

[0342] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "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 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. 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.

[0343] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A surface cleaning device, characterized in that, include: The device body is configured to adhere to and move on the surface to be cleaned, and the device body has a working surface for adhering to the surface to be cleaned to clean the surface. A collision avoidance component is disposed on the outer periphery of the device body and is movably connected to the device body so that the collision avoidance component can move toward one side of the device body; A scraper assembly is disposed on one side of the device body in a first direction, which is the direction of movement of the device body. The scraper assembly includes a scraper that is movable relative to the device body and has a raised position and a lowered position. In the raised position, at least a portion of the scraper is located on the side of the anti-collision member facing the device body, and along a second direction, the bottom edge of the scraper is away from the working surface of the device body and is located above the working surface. In the lowered position, the scraper is located on the side of the anti-collision member away from the device body, and the bottom edge of the scraper is on the same plane as the working surface. The second direction is the height direction of the device body. A drive assembly is disposed on the side of the device body near the scraper assembly along the first direction; the drive assembly includes a drive motor and a motion frame, the scraper is movably connected to the motion frame, and the drive motor drives the motion frame to reciprocate along the first direction to drive the scraper to switch between the raised position and the lowered position.

2. The surface cleaning device according to claim 1, characterized in that, The device body includes a mounting bracket and a cleaning component. The cleaning component is disposed on the bottom surface of the mounting bracket, and the side of the cleaning component facing away from the mounting bracket forms the working surface. There is a channel between the mounting bracket and the bottom of the anti-collision component for the scraper to pass through.

3. The surface cleaning device according to claim 1, characterized in that, The drive assembly also includes a fixing member, which is disposed on the device body and fixed relative to the device body; The drive motor is mounted on the motion frame, and the output end of the drive motor has a rotary component. The rotary component is connected to the fixed component in a transmission manner and can rotate relative to the fixed component and reciprocate along the first direction.

4. The surface cleaning device according to claim 3, characterized in that, The motion frame includes a drive section and two connecting sections. Along the second direction, the drive section is located at the top of the fixing member, and the rotating member is located at the bottom of the drive section. The two connecting sections are distributed on both sides of the drive section in the third direction, and are respectively movably connected to the end of the scraper in the third direction, where the third direction is the width direction of the device body.

5. The surface cleaning device according to claim 4, characterized in that, An installation space is formed between the drive section and the two connecting sections, and the fastener is disposed within the installation space; The rotating component is located on the side of the drive section facing the mounting space.

6. The surface cleaning device according to claim 4, characterized in that, The fixing member has a rack groove, and the rotating member engages with the rack groove for transmission.

7. The surface cleaning device according to claim 6, characterized in that, The fastener has a guide groove that extends along the first direction; The drive section has a raised guide structure on the side facing the fixing member, and the guide structure is slidably connected to the guide groove.

8. The surface cleaning device according to claim 7, characterized in that, The guide groove has a front groove wall and a rear groove wall that are arranged opposite to each other in the first direction. The rear groove wall is located close to the center of the device body relative to the front groove wall. When the scraper is in the raised position, the guide structure slides to the rear groove wall and contacts the rear groove wall; When the scraper is in the descending position, the guide structure slides to the front groove wall and contacts the front groove wall.

9. The surface cleaning device according to claim 7, characterized in that, The guide structure includes a guide post and a bushing, with at least a portion of the guide post disposed within the guide groove; the bushing is rotatably fitted onto the guide post and slidably connected to the guide groove.

10. The surface cleaning apparatus according to claim 7, characterized in that, The fastener has two guide grooves, which are distributed on both sides of the rack groove in the third direction. The drive section is provided with a guide structure at the position corresponding to each of the guide slots.

11. The surface cleaning apparatus according to claim 6, characterized in that, The drive section also has a protrusion on the side facing the fixing member. The protrusion is inserted into the rack groove, and a first roller is provided on the protrusion. The first roller makes rolling contact with the bottom plate of the device body. The fastener is mounted on the base plate.

12. The surface cleaning device according to claim 4, characterized in that, The connecting section is provided with a second roller, which makes rolling contact with the bottom plate in the main body of the device. The fastener is mounted on the base plate.

13. The surface cleaning apparatus according to any one of claims 1-12, characterized in that, The surface cleaning device further includes a pressure strip that extends along the first direction and is positioned above the moving frame in the second direction.

14. The surface cleaning apparatus according to any one of claims 1-12, characterized in that, The surface cleaning device further includes a first positioning detection element and a second positioning detection element, wherein the second positioning detection element is located in front of the first positioning detection element along the first direction; The motion frame has a part to be detected, which is configured to move along the first direction to the first positioning detection element and cooperate with the first positioning detection element to detect whether the scraper is located in the lifting position; The part to be detected is configured to move along the first direction to the second positioning detection element and cooperate with the second positioning detection element to detect whether the scraper is located in the descending position.

15. The surface cleaning apparatus according to any one of claims 1-12, characterized in that, The scraper assembly also includes a lifting bracket connected between the scraper and the moving frame. The lifting bracket is configured to rise and fall relative to the moving frame during its movement, thereby causing the scraper to switch between the raised position and the lowered position.

16. The surface cleaning apparatus according to claim 15, characterized in that, The position where the motion frame connects to the lifting support has a sliding groove, and the sliding groove extends along the second direction; The first end of the lifting bracket is slidably connected to the slide groove, and the second end of the lifting bracket is connected to and relatively fixed to the scraper. The first end of the lifting bracket is configured to move along the slide groove during the movement of the moving frame, and drive the second end to move synchronously.

17. The surface cleaning apparatus according to claim 16, characterized in that, The scraper assembly also includes a third roller and a connecting shaft. The third roller is disposed in the groove, and the second connecting shaft passes through the third roller and is connected to the first end of the lifting bracket.

18. The surface cleaning apparatus according to claim 17, characterized in that, The lifting bracket has two opposite and spaced-apart connecting arms at its first end, and the connecting shaft is disposed between the two connecting arms.

19. The surface cleaning apparatus according to claim 16, characterized in that, One end of the slide has an opening facing the top of the device body. A first limiting member is provided at the opening, which is connected to the motion frame and blocks the opening.

20. The surface cleaning apparatus according to claim 16, characterized in that, The scraper assembly also includes a connecting rod, the first end of which is connected to and fixed relative to the second end of the lifting bracket; The second end of the connecting rod is inclined toward the bottom of the device body relative to its first end, and is connected to and fixed relative to at least part of the scraper.

21. The surface cleaning apparatus according to claim 20, characterized in that, The device body has a limiting channel, and the connecting rod is inserted into the limiting channel.

22. The surface cleaning apparatus according to any one of claims 1-12, characterized in that, It also includes an edge detection component, which is located in the corner area of ​​the device body. The scraper includes a first scraper segment and a second scraper segment. The second scraper segment is movably connected to the end of the first scraper segment, and the second scraper segment is located closer to the edge detection component than the first scraper segment. In the raised position: the second scraper segment is bent relative to the first scraper segment, and both the first scraper segment and the second scraper segment are located on the inner peripheral side of the edge detection component, where the inner peripheral side refers to the side of the edge detection component that is closer to the device body in the first direction; During the descent position: the first scraper segment and the second scraper segment extend in the same direction and are both located on the outer periphery of the edge detection component, where the outer periphery refers to the side of the edge detection component away from the device body in the first direction.

23. The surface cleaning apparatus according to claim 22, characterized in that, During the descent, the first scraper segment and the second scraper segment have an overlapping portion along the length direction of the first scraper segment.

24. The surface cleaning apparatus according to claim 22, characterized in that, In the raised and lowered positions, there is a gap between the second scraper segment and the circumferential outer wall of the edge detection component.

25. The surface cleaning apparatus according to claim 24, characterized in that, The scraper assembly further includes a mounting bracket and an adapter. The first scraper segment is movably connected to the motion frame via the mounting bracket. The adapter has a connecting part and a first connecting end. The connecting part is rotatably connected to the mounting bracket, and the first connecting end is connected to the second scraper segment.

26. The surface cleaning apparatus according to claim 25, characterized in that, The adapter also has a second connecting end, the device body has a second limiting member, and the surface cleaning device further includes a third limiting member; Along the first direction: the second limiting member is located on the rear side of the second connecting end, the third limiting member is located on the front side of the second connecting end, and the third limiting member is disposed on the device body, the anti-collision member, or the mounting bracket; When in the raised position, the second connecting end abuts against the second limiting member; During the descent position, the second connecting end abuts against the third limiting member.

27. The surface cleaning apparatus according to claim 25, characterized in that, During the process of the scraper blade switching from the descending position to the rising position, the circumferential outer wall of the edge detection component is configured to abut against the rear side of the second scraper blade segment in the first direction, so as to drive the second scraper blade segment to bend relative to the first scraper blade segment.

28. The surface cleaning apparatus according to claim 25, characterized in that, The scraper assembly also includes an elastic element connected between the mounting bracket and the adapter, and the elastic element is configured such that the adapter always tends to move towards the descending position with the second scraper segment.

29. The surface cleaning apparatus according to claim 28, characterized in that, The elastic element is a torsion spring. The mounting bracket has a protruding sleeve portion. The torsion spring is sleeved on the sleeve portion, and one end of the torsion spring is connected to the mounting bracket. The other end of the torsion spring is movably connected to the adapter. During the rotation of the adapter, the torsion spring is always in a pre-tensioned state.

30. The surface cleaning apparatus according to claim 29, characterized in that, The adapter has a strip groove, and when the first scraper segment is in the descending position, the length direction of the strip groove is parallel to the length direction of the first scraper segment; The other end of the torsion spring is inserted into the strip groove and can move along the strip groove.

31. A cleaning system, characterized in that, Includes a base station and a surface cleaning device as described in any one of claims 1-30.

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