Self-cleaning window cleaning machine

Abstract

The invention relates to the technical field of cleaning equipment, in particular to a self-cleaning window cleaning machine which is provided with a self-cleaning assembly, a cleaning piece can continuously abut against the peripheral face of a synchronous belt, automatic cleaning of the synchronous belt can be synchronously achieved in the normal walking process of a window cleaning machine body, additional operation or shutdown maintenance is not needed, and the cleaning efficiency is improved. The situation that pollutants such as water stains and dust are accumulated on the synchronous belt can be prevented, the running stability of the walking mechanism is guaranteed from the source, the autonomous operation capacity and the cleaning reliability of the window cleaning machine body can be improved, and the problems that the synchronous belt of an existing window cleaning machine is prone to being stained with water stains or accumulated dust in the operation process, and the service life of the window cleaning machine is prolonged are effectively solved. The problems that the window cleaning machine is prone to slipping in the walking process, the moving track of the window cleaning machine deviates, cleaning coverage is not comprehensive, and the operation stability of the equipment is affected when cleaning coverage is serious are solved.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment technology, specifically a self-cleaning window cleaning machine. Background Technology

[0002] Window cleaning machines are automated equipment specifically designed for cleaning the exterior glass of buildings. They can be adapted to building curtain walls of different heights and structures, and can replace manual labor in high-altitude and hazardous environments to complete glass cleaning operations. They not only significantly improve the efficiency and cleanliness of glass cleaning, but also effectively reduce the safety risks of working at heights. They are widely used in the daily cleaning and maintenance of various buildings such as office buildings, residences, and commercial complexes.

[0003] Existing window cleaning machines typically have a walking mechanism, which includes a timing belt. The timing belt rotates to move the window cleaning machine on the glass surface. However, because the timing belt is prone to getting wet or accumulating dust during operation, the window cleaning machine is prone to slipping during movement, causing the machine's movement trajectory to deviate, resulting in incomplete cleaning coverage. In severe cases, it can also affect the stability of the equipment's operation and fail to guarantee efficient cleaning results.

[0004] This invention was proposed in response to the shortcomings of existing technologies. Summary of the Invention

[0005] To address the aforementioned problem that the synchronous belt of existing window cleaning machines easily becomes soiled with water or accumulates dust during operation, causing the machine to slip, deviate from its movement trajectory, and result in incomplete cleaning coverage, which can even affect the stability of the equipment, the technical solution adopted by this invention is as follows: A self-cleaning window cleaning machine includes a window cleaning machine body, a traveling mechanism disposed on the window cleaning machine body, and a self-cleaning component. The traveling mechanism includes a timing belt, and the self-cleaning component includes a cleaning element detachably disposed on the window cleaning machine body. The cleaning element abuts against the outer peripheral surface of the timing belt to clean its outer peripheral surface when the timing belt rotates.

[0006] Furthermore, the cleaning component includes a mounting part detachably disposed on the window cleaning machine body and a cleaning tongue connected to the mounting part. A deformation space is provided between the mounting part and the cleaning tongue. The cleaning tongue abuts against the outer peripheral surface of the timing belt and deforms when the timing belt rotates.

[0007] Furthermore, the self-cleaning component includes an elastic pressing mechanism, which is disposed within the window cleaning machine body and located on one side of the synchronous belt, for pressing the free end of the cleaning tongue against the outer peripheral surface of the synchronous belt.

[0008] Furthermore, the elastic clamping mechanism includes a mounting bracket, a pressing member disposed on the mounting bracket, and a return spring. One side of the return spring abuts against the inner wall of the window cleaning machine body, and the other side of the return spring abuts against the mounting bracket. The pressing member is used to press the free end of the cleaning tongue against the outer peripheral surface of the synchronous belt.

[0009] Furthermore, a sliding mechanism is provided between the mounting bracket and the window cleaning machine body, the sliding mechanism being used to guide the mounting bracket to slide relative to the window cleaning machine body.

[0010] Furthermore, the sliding mechanism includes a guide protrusion on the window cleaning machine body and a guide groove on the mounting bracket. The guide groove extends toward the outer peripheral surface of the timing belt, and the guide protrusion slides in cooperation with the guide groove.

[0011] Furthermore, the walking mechanism also includes a first synchronous pulley and a second synchronous pulley, both of which are located inside the synchronous belt and mesh with it. The elastic pressing mechanism includes a first elastic pressing mechanism located near the first synchronous pulley and a second elastic pressing mechanism located near the second synchronous pulley. The cleaning tongue includes a first cleaning tongue located near the first elastic pressing mechanism and a second cleaning tongue located near the second elastic pressing mechanism.

[0012] Furthermore, the first cleaning tongue and the second cleaning tongue are arranged opposite to each other, and a gap is provided between the first cleaning tongue and the second cleaning tongue for the synchronous belt to run.

[0013] Furthermore, the width of the cleaning tongue is adapted to the width of the synchronization belt.

[0014] Furthermore, the pressing member is a pressing wheel, the pressing wheel is provided with a connecting protrusion, the mounting bracket is provided with a connecting groove, and the connecting protrusion and the connecting groove are inserted into each other.

[0015] The beneficial effects of this invention are as follows: 1. This invention, by setting a self-cleaning component, allows the cleaning element to continuously abut against the outer circumference of the timing belt, achieving automatic cleaning of the timing belt simultaneously during the normal movement of the window cleaning machine. No additional operation or downtime maintenance is required, which helps prevent the accumulation of water stains, dust, and other contaminants on the timing belt, ensuring the stability of the walking mechanism from the source. This helps improve the autonomous operation capability and cleaning reliability of the window cleaning machine, effectively solving the problem that the timing belt of existing window cleaning machines is prone to water stains or dust accumulation during operation, causing the window cleaning machine to slip during movement, resulting in deviation of the movement trajectory, incomplete cleaning coverage, and in severe cases, affecting the stability of equipment operation. 2. By detachably mounting the cleaning components onto the window cleaning machine body, users can quickly replace or clean worn or dirty cleaning components without the need for special tools or disassembly of the entire machine, which improves the convenience of maintenance.

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. Attached Figure Description

[0017] Figure 1 This is one of the structural schematic diagrams of the window cleaning machine of the present invention; Figure 2 This is a second schematic diagram of the window cleaning machine of the present invention; Figure 3 This is an exploded view and a partially enlarged view of the window cleaning machine of the present invention; Figure 4 This is the third structural schematic diagram of the window cleaning machine of the present invention; Figure 5 for Figure 4 Cross-sectional view along line AA; Figure 6 for Figure 5 An enlarged view of section B marked on the map; Figure 7 This is a schematic diagram of the elastic clamping mechanism of the present invention; Figure 8 This is an exploded view of the elastic clamping mechanism of the present invention; Figure 9 This is a schematic diagram of the cleaning component of the present invention. Detailed Implementation

[0018] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0019] like Figures 1 to 9The self-cleaning window cleaning machine shown includes a window cleaning machine body 1, a traveling mechanism 2 disposed on the window cleaning machine body 1, and a self-cleaning component 3. The traveling mechanism 2 includes a timing belt 20, and the self-cleaning component 3 includes a cleaning component 31 detachably disposed on the window cleaning machine body 1. The cleaning component 31 abuts against the outer peripheral surface of the timing belt 20 to clean its outer peripheral surface when the timing belt 20 rotates. This invention, by incorporating a self-cleaning component, allows the cleaning element to continuously abut against the outer periphery of the timing belt. This enables automatic cleaning of the timing belt during normal operation of the window cleaning machine, eliminating the need for additional operation or downtime maintenance. This helps prevent the accumulation of water stains, dust, and other contaminants on the timing belt, ensuring the stability of the walking mechanism from the source. It also improves the autonomous operation capability and cleaning reliability of the window cleaning machine, effectively solving the problem that existing window cleaning machines' timing belts easily become soiled with water or accumulate dust during operation, causing slippage, deviation in the machine's movement trajectory, incomplete cleaning coverage, and in severe cases, affecting the stability of the equipment.

[0020] Furthermore, by detachably mounting the cleaning component 31 onto the window cleaning machine body 1, users can quickly replace or clean the worn or dirty cleaning component 31 without the need for special tools or disassembly of the entire machine, which improves the convenience of maintenance.

[0021] Optionally, in some embodiments, the cleaning component 31 is a flexible cleaning pad made of absorbent non-woven fabric or microfiber material. One end of the pad is fixed to the mounting part at the bottom of the window cleaning machine body 1 by a snap-fit ​​structure, and the other end hangs down naturally and abuts against the outer peripheral surface of the timing belt 20 with a slight interference fit. The interference fit allows the cleaning component 31 to remain in contact when the timing belt 20 is stationary. When the timing belt 20 rotates, the surface contaminants are scraped off and adsorbed by the flexible material, thereby achieving self-cleaning.

[0022] Optionally, in some embodiments, the cleaning component 31 is a cleaning roller brush, which includes a rotating shaft and a brush roller sleeved on the rotating shaft. The two ends of the rotating shaft are rotatably mounted on a bracket and are located on one side of the synchronous belt 20. The outer edge of the brush roller lightly touches the outer peripheral surface of the synchronous belt 20, thereby forming a rolling contact relationship. When the synchronous belt 20 rotates, it drives the brush roller to rotate synchronously, and removes dust and water film through the sweeping action of the bristles, thereby achieving low resistance and high efficiency self-cleaning.

[0023] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the cleaning component 31 is a cleaning cloth, one side of which is fixedly connected to the window cleaning machine body 1, and the other side extends to form a free end and constitutes a cleaning tongue 312; the cleaning tongue 312 is made of multiple layers of non-woven fabric or microfiber fabric, which has good water absorption and flexibility, and its free end is subjected to pre-pressure by an elastic pressing mechanism 32, so as to abut against the outer peripheral surface of the synchronous belt 20 with a constant contact force; when the synchronous belt 20 rotates, the cleaning tongue 312 deforms accordingly, continuously scraping off and absorbing water stains and dust on the surface of the synchronous belt 20, thereby achieving a stable and reliable self-cleaning function.

[0024] like Figures 1 to 9 The cleaning component 31 shown includes a mounting part 311 detachably disposed on the window cleaning machine body 1, and a cleaning tongue 312 connected to the mounting part 311. A deformation space 313 is provided between the mounting part 311 and the cleaning tongue 312. The cleaning tongue 312 abuts against the outer peripheral surface of the timing belt 20 and deforms when the timing belt 20 rotates. Furthermore, by dividing the cleaning component 31 into a mounting part 311 fixed to the window cleaning machine body 1 and a deformable cleaning tongue 312, the cleaning tongue 312 can naturally conform to the outer peripheral surface of the synchronous belt 20 with a cantilever structure. Without the need for a complex drive mechanism, it can passively follow the synchronous belt 20 by relying on contact force during its rotation. This simplifies the structure of the self-cleaning component, helps reduce manufacturing costs and assembly difficulty, and effectively improves the compactness and reliability of the overall layout.

[0025] Furthermore, the cleaning tongue 312 deforms when the synchronous belt 20 rotates, enabling it to dynamically adapt to the slight undulations or contaminant accumulation on the surface of the synchronous belt 20 and maintain close contact at all times. This adaptive fitting ability significantly improves the removal efficiency of water stains, dust and other attachments, avoids cleaning blind spots caused by partial detachment, and thus ensures the continuous cleanliness of the surface of the synchronous belt 20.

[0026] Furthermore, the cleaning component 31 is detachably mounted on the window cleaning machine body 1 via the mounting part 311.

[0027] Optionally, in some embodiments, the mounting part 311 is provided with an elastic hook, and the window cleaning machine body 1 is provided with a corresponding slot; after the elastic hook is inserted into the slot, it undergoes elastic deformation and springs back to lock, thereby realizing the quick snap-fit ​​and fixation of the mounting part 311 and the window cleaning machine body 1, which is conducive to the user disassembling and assembling the cleaning part 31 by hand, and convenient to replace or clean the cleaning tongue 312, thereby improving the convenience of maintenance.

[0028] Optionally, in some embodiments, the mounting part 311 is provided with a through hole, and the window cleaning machine body 1 is provided with a corresponding threaded hole; by passing fasteners (such as screws or bolts) through the through hole and engaging with the threaded hole, the mounting part 311 is firmly fixed to the window cleaning machine body 1.

[0029] Optionally, in some embodiments, the back of the mounting part 311 is provided with a first hook-and-loop surface (such as a hook surface), and the corresponding area of ​​the window cleaning machine body 1 is provided with a second hook-and-loop surface (such as a rough surface); the first hook-and-loop surface and the second hook-and-loop surface fit together to detachably fix the mounting part 311 to the window cleaning machine body 1.

[0030] Specifically, a deformation space 313 is provided between the mounting part 311 and the cleaning tongue 312. The deformation space 313 provides sufficient bending or curling allowance for the cleaning tongue 312 when it is driven by the synchronous belt 20. When the synchronous belt 20 rotates and pushes the cleaning tongue 312 into the window cleaning machine body 1, the cleaning tongue 312 deforms through the deformation space 313 and is not rigidly constrained by the mounting part 311, thereby ensuring that it extends smoothly and effectively triggers the elastic pressing mechanism 32.

[0031] like Figures 1 to 9 The self-cleaning component 3 shown includes an elastic pressing mechanism 32, which is located inside the window cleaning machine body 1 and on one side of the synchronous belt 20, and is used to press the free end of the cleaning tongue 312 against the outer peripheral surface of the synchronous belt 20. Furthermore, by setting an elastic clamping mechanism 32 inside the window cleaning machine body 1, which is located on one side of the synchronous belt 20 and applies a continuous clamping force to the free end of the cleaning tongue 312, it is beneficial to ensure that the cleaning tongue 312 is always tightly attached to the outer peripheral surface of the synchronous belt 20. This helps to overcome the contact failure problem caused by the loosening of the cleaning part 31 or the contamination of the synchronous belt 20 surface, and effectively improves the continuity and reliability of the self-cleaning process.

[0032] Furthermore, integrating the elastic clamping mechanism 32 into the window cleaning machine body 1 not only saves external space and improves the overall aesthetics of the machine, but also avoids the risk of exposed mechanisms being easily corroded by moisture and dust. At the same time, the built-in design allows the clamping force to be precisely applied to the free end of the cleaning tongue 312, which helps to optimize the force transmission path and effectively reduce ineffective friction and energy loss.

[0033] Furthermore, the elastic clamping mechanism 32 uses an elastic element (such as a return spring) to provide adjustable pressure, so that the cleaning tongue 312 can deform with the synchronous belt 20 during rotation and maintain constant contact. This not only avoids excessive wear caused by rigid clamping, but also prevents cleaning blind spots caused by insufficient contact.

[0034] Optionally, in some embodiments, the elastic pressing mechanism 32 includes a sliding block, a compression spring, and a groove provided on the inner wall of the window cleaning machine body 1; the sliding block is slidably installed in the groove, and its side near the synchronous belt 20 is provided with an inclined surface or an arc-shaped guide surface, and the other side is connected to the inner wall of the window cleaning machine body 1 through the compression spring; when the synchronous belt 20 rotates, causing the cleaning tongue 312 to deform inward and extend into the interior of the window cleaning machine body 1, its free end first pushes the sliding block to move away from the synchronous belt 20 along the groove, and then the compression spring releases elastic potential energy, driving the sliding block to rebound in the opposite direction, and stably pressing the cleaning tongue 312 against the outer peripheral surface of the synchronous belt 20.

[0035] Optionally, in some embodiments, the elastic clamping mechanism 32 includes a swing arm, a rotating shaft, and a torsion spring. The swing arm is rotatably mounted inside the window cleaning machine body 1 via the rotating shaft. One end of the swing arm is the clamping end, facing the outer peripheral surface of the timing belt 20, and the other end is the trigger end, facing the insertion path of the cleaning tongue 312. The torsion spring is sleeved on the rotating shaft, with one end abutting against the swing arm and the other end fixed to the window cleaning machine body 1, so that the swing arm keeps the clamping end raised and does not contact the cleaning tongue 312 in the initial state. When the cleaning tongue 312 deforms inward due to the rotation of the timing belt 20 and extends into the window cleaning machine body 1, its free end strikes the trigger end of the swing arm, causing the swing arm to swing away from the timing belt 20 around the rotation axis. Subsequently, the restoring torque of the torsion spring drives the swing arm to swing back in the opposite direction, pressing the clamping end against the cleaning tongue 312, so that it is in close contact with the outer peripheral surface of the timing belt 20, thereby completing the adaptive clamping.

[0036] like Figures 1 to 9 The elastic clamping mechanism 32 shown includes a mounting bracket 3201, a pressing member 3202 disposed on the mounting bracket 3201, and a return spring 3203. One side of the return spring 3203 abuts against the inner side wall of the window cleaning machine body 1, and the other side of the return spring 3203 abuts against the mounting bracket 3201. The pressing member 3202 is used to press the free end of the cleaning tongue 312 against the outer peripheral surface of the synchronous belt 20. Furthermore, by placing the return spring 3203 between the inner wall of the window cleaning machine body 1 and the mounting bracket 3201, a stable elastic support system is formed, enabling the pressing member 3202 to continuously apply a controllable pressing force to the cleaning tongue 312. This structure does not require an external adjustment device and can automatically maintain the tight fit between the cleaning tongue 312 and the outer peripheral surface of the synchronous belt 20 during the operation of the synchronous belt 20, effectively improving the continuity and reliability of self-cleaning.

[0037] Furthermore, since the return spring 3203 acts directly on the mounting bracket 3201, and the pressing member 3202 is located on it, the overall force path is short and clear, which helps to avoid force loss or response delay caused by multi-stage transmission. When the cleaning tongue 312 deforms due to the rotation of the synchronous belt 20, this structure can quickly adjust the pressing position and maintain constant contact pressure, which not only prevents slippage but also avoids excessive wear, thus helping to enhance the operating stability and cleaning efficiency of the walking mechanism 2.

[0038] Furthermore, the mounting bracket 3201 has an extension on the side away from the pressing member 3202. The extension is cylindrical, and the return spring 3203 is sleeved on the outer wall of the extension. This not only provides radial limiting for the return spring 3203, preventing it from deflecting or twisting during compression or extension, but also ensures that the spring force is stably transmitted to the mounting bracket 3201 along the axial direction, thereby improving the reliability and durability of the elastic clamping mechanism 32.

[0039] like Figures 1 to 9 A sliding mechanism 4 is provided between the mounting bracket 3201 shown and the window cleaning machine body 1. The sliding mechanism 4 is used to guide the mounting bracket 3201 to slide relative to the window cleaning machine body 1. Furthermore, by setting a sliding mechanism 4 between the mounting bracket 3201 and the window cleaning machine body 1, it is beneficial to limit the degree of freedom of movement of the mounting bracket 3201, so that it can only slide smoothly in a direction perpendicular to the outer peripheral surface of the timing belt 20. This guiding effect prevents the mounting bracket 3201 from deflecting or shaking under the action of the return spring 3203, which helps to ensure that the pressing part 3202 always acts on the cleaning tongue 312 at the correct angle and position, and helps to improve the accuracy and repeatability of the pressing action.

[0040] Furthermore, the sliding mechanism 4 limits the sliding direction and stroke of the mounting bracket 3201, so that it only moves within a preset range, avoiding interference between the elastic pressing mechanism 32 and other components such as the synchronous belt 20 and drive assembly inside the window cleaning machine body 1 when the elastic pressing mechanism 32 is in action. This directional sliding design fits the compact spatial layout inside the window cleaning machine body 1, which helps to ensure the precise execution of the action logic of the cleaning tongue 312 extending into the trigger and the elastic pressing mechanism 32 retracting and then advancing.

[0041] Optionally, in some embodiments, the sliding mechanism 4 includes a linear guide rail fixed to the window cleaning machine body 1 and a slider fixed to the mounting bracket 3201; the slider is slidably connected to the linear guide rail, thereby forming a high-precision linear motion pair.

[0042] Optionally, in some embodiments, the inner wall of the window cleaning machine body 1 is provided with a slide rail extending in a preset direction, and the mounting bracket 3201 is provided with a matching slide table. The slide table is embedded in the slide rail and can slide along its length direction. The contact surface between the slide rail and the slide table is a flat or arc-shaped surface, and smooth sliding is achieved through clearance fit.

[0043] Furthermore, as a preferred embodiment of the invention and not a limitation thereof, the sliding mechanism 4 includes a guide protrusion 41 provided on the window cleaning machine body 1 and a guide groove 42 provided on the mounting bracket 3201; the guide protrusion 41 extends in the direction toward the mounting bracket 3201, the guide groove 42 is opened in the direction perpendicular to the outer peripheral surface of the timing belt 20, and the guide protrusion 41 is inserted into the guide groove 42 and slides therewith.

[0044] like Figures 1 to 9 The sliding mechanism 4 shown includes a guide protrusion 41 on the window cleaning machine body 1 and a guide groove 42 on the mounting bracket 3201. The guide groove 42 extends toward the outer peripheral surface of the timing belt 20, and the guide protrusion 41 and the guide groove 42 slide in cooperation. Furthermore, by extending the guide groove 42 towards the outer peripheral surface of the timing belt 20 and slidingly engaging with the guide protrusion 41 fixed on the window cleaning machine body 1, the mounting bracket 3201 can only move linearly in the direction required for pressing. This directional guidance helps prevent the mounting bracket 3201 from deflecting or wobbling under the action of the return spring 3203, and helps ensure that the force applied by the pressing member 3202 to the cleaning tongue 312 is always perpendicular to the surface of the timing belt 20, effectively improving the self-cleaning bonding accuracy and stability.

[0045] Furthermore, the sliding mechanism 4 achieves high-precision guidance through simple geometric fit, which is low in manufacturing cost and easy to assemble; the guide groove 42 forms a wrapping constraint on the guide protrusion 41, effectively limiting its radial displacement and reducing movement gap, thereby reducing the fluctuation of clamping force caused by loosening; secondly, the sliding contact area is moderate, which is conducive to balancing smoothness and wear resistance, effectively extending the service life of the elastic clamping mechanism 32 and reducing the maintenance frequency.

[0046] Specifically, the guide groove 42 is configured as a long strip-shaped through groove, the length of which extends in the direction toward the outer periphery of the timing belt 20, so that the guide protrusion 41 can slide smoothly in the groove; the structure of the guide groove 42 is not only easy to process, but also provides a clear straight guide path, effectively constraining the mounting bracket 3201 to move only in the preset pressing direction, avoiding swaying or rotation, thereby ensuring that the cleaning tongue 312 always fits the surface of the timing belt 20 in a stable posture.

[0047] like Figures 1 to 9The walking mechanism 2 shown also includes a first synchronous pulley 21 and a second synchronous pulley 22. The first synchronous pulley 21 and the second synchronous pulley 22 are both located inside the synchronous belt 20 and mesh with the synchronous belt 20. The elastic pressing mechanism 32 includes a first elastic pressing mechanism 321 located near the first synchronous pulley 21 and a second elastic pressing mechanism 322 located near the second synchronous pulley 22. The cleaning tongue 312 includes a first cleaning tongue 3121 located near the first elastic pressing mechanism 321 and a second cleaning tongue 3122 located near the second elastic pressing mechanism 322. Furthermore, by setting a first cleaning tongue 3121 and a first elastic pressing mechanism 321 near the first synchronous wheel 21, and setting a second cleaning tongue 3122 and a second elastic pressing mechanism 322 near the second synchronous wheel 22, the window cleaning machine can automatically activate the self-cleaning function on the corresponding side when moving forward or backward, thereby achieving bidirectional self-cleaning coverage with no blind spots throughout the entire stroke.

[0048] Specifically, when the window cleaning machine travels in a certain direction, the timing belt 20 rotates clockwise or counterclockwise accordingly; for example... Figure 5 As shown, if the timing belt 20 rotates clockwise, the first cleaning tongue 3121 can deform and roll into the window cleaning machine body 1, thereby triggering the first elastic pressing mechanism 321 near the first timing pulley 21, causing it to press the first cleaning tongue 3121 against the outer circumferential surface of the timing belt 20, thus achieving self-cleaning of the timing belt 20; conversely, when the timing belt 20 rotates counterclockwise, the second cleaning tongue 3122 is driven and triggers the second elastic pressing mechanism 322, thereby completing self-cleaning during reverse operation. The dual-sided independent response mechanism with automatic direction switching helps ensure that the window cleaning machine always effectively and reliably cleans the synchronous belt 20 during bidirectional movement. Furthermore, regardless of whether the synchronous belt 20 rotates clockwise or counterclockwise, it will always form an effective pressing contact with the first cleaning tongue 3121 or the second cleaning tongue 3122. Since the synchronous belt 20 is a closed-loop structure and rotates continuously, its entire outer circumference will pass through the activated cleaning tongue 312 in sequence, thereby continuously scraping away water stains and dust.

[0049] Preferably, the first elastic pressing mechanism 321 and the second elastic pressing mechanism 322 have the same structural configuration.

[0050] like Figures 1 to 9 The first cleaning tongue 3121 and the second cleaning tongue 3122 shown are arranged opposite to each other, and a gap 3123 is provided between the first cleaning tongue 3121 and the second cleaning tongue 3122 for the synchronous belt 20 to run. Furthermore, by setting the first cleaning tongue 3121 and the second cleaning tongue 3122 opposite to each other and forming a gap 3123 between them for the synchronous belt 20 to run, a clear passage is provided for the synchronous belt 20. This gap 3123 not only prevents the two cleaning tongues 312 from clamping or obstructing the movement of the synchronous belt 20 due to excessive proximity, but also ensures that the synchronous belt 20 is always within the effective cleaning area between the two tongues during rotation, thereby ensuring the continuity and stability of the self-cleaning action.

[0051] Furthermore, the opposing double cleaning tongues, together with the gap 3123 in the middle, form a "clamping" cleaning environment on the outer circumference of the synchronous belt 20: no matter which direction the synchronous belt 20 rotates, there will always be at least one cleaning tongue 312 in close contact with it and scrape off the contaminants, while the gap 3123 ensures that the belt body will not generate excessive resistance due to the simultaneous pressing of both sides, which is conducive to balancing cleaning efficiency and lightweight operation, and effectively extends the service life of the synchronous belt 20 and the cleaning component 31.

[0052] like Figures 1 to 9 The width of the cleaning tongue 312 shown is adapted to the width of the synchronization belt 20; Furthermore, by matching the width of the cleaning tongue 312 with the width of the timing belt 20, it is beneficial to ensure that the cleaning tongue 312 can cover the entire axial range of the outer circumference of the timing belt 20, which helps to avoid edge contamination residue caused by the cleaning area being too narrow, effectively removing water stains, dust and cleaning fluid residues throughout the full width of the timing belt 20, thereby improving the comprehensiveness and reliability of self-cleaning.

[0053] Furthermore, the adaptive width ensures that the contact between the cleaning tongue 312 and the timing belt 20 is a surface contact rather than a localized line contact. This allows the pressure applied by the elastic clamping mechanism 32 to be evenly distributed across the entire width of the timing belt 20, preventing excessive local pressure from causing surface wear and tooth deformation of the timing belt 20. It also reduces the breakage and aging problems caused by localized stress concentration in the cleaning tongue 312.

[0054] Optionally, in some embodiments, the width of the cleaning tongue 312 is greater than the width of the timing belt 20; this arrangement allows the cleaning tongue 312 to cover the outer peripheral surface of the timing belt 20 while its two side edges slightly extend beyond the boundary of the timing belt 20, thereby effectively intercepting and removing water droplets or splashed dirt thrown from the side of the timing belt 20, preventing contaminants from spreading into the interior of the window cleaning machine body 1 or other transmission components, thereby improving the overall anti-fouling performance and long-term operational reliability of the machine.

[0055] Optionally, in some embodiments, the width of the cleaning tongue 312 is equal to the width of the timing belt 20; this setting ensures that the cleaning tongue 312 is precisely aligned with the timing belt 20 in the axial direction, ensuring that the clamping force is evenly distributed in the effective working area of ​​the timing belt 20, avoiding ineffective friction or interference with the timing pulley due to the cleaning part 31 being too wide, while reducing material waste and optimizing the balance between cleaning efficiency and motion resistance.

[0056] like Figures 1 to 9 The pressing member 3202 shown is a pressing wheel. The pressing wheel is provided with a connecting protrusion 32021. The mounting bracket 3201 is provided with a connecting groove 32011. The connecting protrusion 32021 and the connecting groove 32011 are inserted into each other. Furthermore, the pressing component 3202 is set as a pressing wheel, and the connecting protrusion 32021 is inserted into the connecting groove 32011 on the mounting bracket 3201, which is conducive to the rapid positioning and installation of the pressing wheel. This insertion structure does not require screws or welding, and can be assembled or replaced by hand, which helps to improve production efficiency and the convenience of later maintenance.

[0057] Optionally, the pressure roller can rotate freely during operation. When the timing belt 20 drives the cleaning tongue 312 to move, the pressure roller replaces sliding friction with rolling contact, which greatly reduces contact resistance and wear. This not only extends the service life of the pressure roller and the cleaning tongue 312, but also avoids the timing belt 20 from getting stuck or slipping due to excessive friction, effectively improving the stability and energy efficiency of the self-cleaning process.

[0058] Furthermore, the connecting protrusion 32021 passes through the center of the pressure roller along the axial direction and extends out from both end faces of the pressure roller to form a shaft-like structure with both ends exposed; this design enables the connecting protrusion 32021 to be stably inserted into the connecting groove 32011 on the mounting bracket 3201, while providing reliable rotational support or fixed reference for the pressure roller.

[0059] Optionally, in some embodiments, the pressure roller is fixedly connected to the connecting protrusion 32021 (e.g., by interference fit, bonding, or integral molding), and the two ends of the connecting protrusion 32021 are rotatably inserted into the connecting groove 32011; when the cleaning tongue 312 moves with the synchronous belt 20, the pressure roller 3202 drives the connecting protrusion 32021 to rotate synchronously around its axis, thereby rolling against the cleaning tongue 312, effectively reducing frictional resistance and wear.

[0060] Optionally, in some embodiments, the connecting protrusion 32021 and the connecting groove 32011 are fixedly fitted (e.g., by tight fitting, snap-fit, or adhesive fixation), so that the connecting protrusion 32021 remains stationary relative to the mounting bracket 3201; while the pressure roller is rotatably sleeved on the outer peripheral surface of the connecting protrusion 32021, with a gap between the two or a bearing structure provided; in this case, the pressure roller rotates independently, while the connecting protrusion 32021 only serves as a fixed rotating shaft, thus achieving rolling contact as well.

[0061] The working principle is as follows: During the operation of the window cleaning machine, the timing belt 20 rotates cyclically around the first timing pulley 21 and the second timing pulley 22; as... Figure 5 As shown, when the timing belt 20 rotates clockwise, it causes the first cleaning tongue 3121 to deform and extend into the window cleaning machine body 1, triggering the first elastic pressing mechanism 321 to press the first cleaning tongue 3121 against the outer circumferential surface of the timing belt 20. When the timing belt 20 rotates in the opposite direction, the second cleaning tongue 3122 is driven and triggers the second elastic pressing mechanism 322 to complete the pressing. Since the timing belt 20 is a closed-loop structure, no matter which side is activated, its outer circumferential surface can continuously pass through the cleaning tongue 312 on that working side, thereby achieving full circumferential self-cleaning. When the timing belt 20 rotates and drives the cleaning tongue 312 to deform and roll into the interior of the window cleaning machine body 1, the free end of the cleaning tongue 312 first contacts the pressing member 3202 in the elastic pressing mechanism 32, and pushes it together with the mounting bracket 3201 to move away from the timing belt 20 along the sliding mechanism 4. Then, under the elastic force of the return spring 3203, the mounting bracket 3201 drives the pressing member 3202 to move back in the opposite direction, and stably presses the free end of the cleaning tongue 312 against the outer peripheral surface of the timing belt 20.

[0062] The above examples are merely illustrative of the technical content of the present invention to facilitate reader understanding, but do not imply that the implementation of the present invention is limited thereto. Any technical extensions or re-creations made based on the present invention are protected by the present invention. The scope of protection of the present invention is defined by the claims.

Claims

1. A self-cleaning window cleaning machine, comprising a window cleaning machine body (1), a traveling mechanism (2) disposed on the window cleaning machine body (1), and a self-cleaning component (3), characterized in that: The walking mechanism (2) includes a timing belt (20), and the self-cleaning component (3) includes a cleaning component (31) detachably disposed on the window cleaning machine body (1). The cleaning component (31) abuts against the outer peripheral surface of the timing belt (20) to clean its outer peripheral surface when the timing belt (20) rotates.

2. The self-cleaning window cleaning machine according to claim 1, characterized in that: The cleaning component (31) includes a mounting part (311) detachably disposed on the window cleaning machine body (1) and a cleaning tongue (312) connected to the mounting part (311). A deformation space (313) is provided between the mounting part (311) and the cleaning tongue (312). The cleaning tongue (312) abuts against the outer peripheral surface of the timing belt (20) and deforms when the timing belt (20) rotates.

3. The self-cleaning window cleaning machine according to claim 2, characterized in that: The self-cleaning component (3) includes an elastic pressing mechanism (32), which is located inside the window cleaning machine body (1) and on one side of the synchronous belt (20), and is used to press the free end of the cleaning tongue (312) against the outer peripheral surface of the synchronous belt (20).

4. A self-cleaning window cleaning machine according to claim 3, characterized in that: The elastic pressing mechanism (32) includes a mounting bracket (3201), a pressing member (3202) disposed on the mounting bracket (3201), and a return spring (3203). One side of the return spring (3203) abuts against the inner wall of the window cleaning machine body (1), and the other side of the return spring (3203) abuts against the mounting bracket (3201). The pressing member (3202) is used to press the free end of the cleaning tongue (312) against the outer peripheral surface of the synchronous belt (20).

5. A self-cleaning window cleaning machine according to claim 4, characterized in that: A sliding mechanism (4) is provided between the mounting bracket (3201) and the window cleaning machine body (1). The sliding mechanism (4) is used to guide the mounting bracket (3201) to slide relative to the window cleaning machine body (1).

6. A self-cleaning window cleaning machine according to claim 5, characterized in that: The sliding mechanism (4) includes a guide protrusion (41) on the window cleaning machine body (1) and a guide groove (42) on the mounting bracket (3201). The guide groove (42) extends toward the outer peripheral surface of the timing belt (20), and the guide protrusion (41) and the guide groove (42) slide together.

7. A self-cleaning window cleaning machine according to claim 3, characterized in that: The walking mechanism (2) further includes a first synchronous pulley (21) and a second synchronous pulley (22). The first synchronous pulley (21) and the second synchronous pulley (22) are both located on the inner side of the synchronous belt (20) and mesh with the synchronous belt (20). The elastic pressing mechanism (32) includes a first elastic pressing mechanism (321) located near the first synchronous pulley (21) and a second elastic pressing mechanism (322) located near the second synchronous pulley (22). The cleaning tongue (312) includes a first cleaning tongue (3121) located near the first elastic pressing mechanism (321) and a second cleaning tongue (3122) located near the second elastic pressing mechanism (322).

8. A self-cleaning window cleaning machine according to claim 7, characterized in that: The first cleaning tongue (3121) and the second cleaning tongue (3122) are arranged opposite to each other, and a gap (3123) is provided between the first cleaning tongue (3121) and the second cleaning tongue (3122) for the synchronous belt (20) to run.

9. A self-cleaning window cleaning machine according to claim 2, characterized in that: The width of the cleaning tongue (312) is adapted to the width of the synchronization belt (20).

10. A self-cleaning window cleaning machine according to claim 4, characterized in that: The pressing member (3202) is a pressing wheel, the pressing wheel is provided with a connecting protrusion (32021), the mounting bracket (3201) is provided with a connecting groove (32011), and the connecting protrusion (32021) and the connecting groove (32011) are inserted into each other.

Images