Scraping strip device and window cleaning equipment

Abstract

The invention provides a scraping strip device and window cleaning equipment. The scraping strip device comprises a frame body, a liquid spraying mechanism arranged on the frame body, a scraping strip structure movably connected with the frame body and a scraping strip driving mechanism in transmission connection with the scraping strip structure. Wherein the frame body is provided with a liquid spraying hole; a nozzle of the liquid spraying mechanism is arranged in the liquid spraying hole in a penetrating manner; the scraping strip structure can move to a shielding position or a working position relative to the frame body; the scraping strip driving mechanism can drive the scraping strip structure to move to the shielding position so as to shield the liquid spraying hole, or the scraping strip driving mechanism can drive the scraping strip structure to move to the working position so as to move away from the liquid spraying hole and is used for scraping window glass to be cleaned. According to the scheme, the scraping strip scraping function and the liquid spraying hole protection function are integrated, an independent shielding structure is abandoned, the layout is simplified, the nozzles are prevented from being polluted and damaged, the cleaning protection performance is improved, small window cleaning equipment is adapted, and practicability is high.

Description

Technical Field

[0001] This invention relates to the technical field of window cleaning equipment, and more specifically, to a scraper device and window cleaning equipment. Background Technology

[0002] With the development of intelligent and convenient home cleaning, window cleaning equipment with spray function has become a common tool for window cleaning because it can integrate spray cleaning and scraping to remove dirt. Such equipment usually has a spray mechanism and a scraper structure on the frame. The spray mechanism sprays cleaning liquid onto the window glass, and the scraper structure scrapes to complete the cleaning, effectively improving the efficiency and effect of window cleaning.

[0003] However, existing window cleaning equipment with spray function still has many technical defects in actual use: First, the spray holes and the nozzles inserted in them lack effective protective structures. When the equipment is not in spray working state (such as storage, equipment movement, or pure dry scraping operation), external dust, debris, water stains, etc. can easily enter the spray holes or adhere to the nozzle end face, which can easily cause nozzle blockage and scale buildup inside the spray pipeline, resulting in poor liquid flow and uneven spraying during subsequent spraying operations, seriously affecting the cleaning effect of the spray. Second, some equipment has an additional independent shielding component to cover the spray holes in order to solve the problem of spray hole protection. This type of design requires a separate drive structure and installation space for the shielding component, which not only makes the overall structure of the equipment complex and increases its size, which does not conform to the design trend of miniaturization and lightweight window cleaning equipment, but also increases the probability of equipment failure due to the linkage of multiple components, thus increasing production and maintenance costs.

[0004] In summary, there is an urgent need in the existing technology for a reasonably designed scraper device and window cleaning equipment that can achieve linkage control between the scraper structure's scraping operation and the protection of the spray nozzles. This would simplify the overall structure of the equipment, improve structural utilization, and effectively protect the spray nozzles and spray holes from external contamination, thus preventing them from affecting the performance. This would solve the problems of easy nozzle clogging, complex structure, and limited functionality in existing window cleaning equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a scraper device and a window cleaning equipment to solve the technical problems of complex structure and single function of existing window cleaning equipment.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, a scraper device is provided, comprising: The frame, the spraying mechanism mounted on the frame, the scraper structure movably connected to the frame, and the scraper drive mechanism being driven by the scraper structure; The frame is provided with spray holes; the nozzle of the spray mechanism passes through the spray holes; the scraper structure can move relative to the frame to a blocking position or a working position; the scraper driving mechanism can drive the scraper structure to move to the blocking position to block the spray holes, or the scraper driving mechanism can drive the scraper structure to move to the working position to move away from the spray holes and to scrape the window glass to be cleaned.

[0008] By adopting the above technical solution, and through the integrated design of the scraper structure and spray nozzle protection function, the complex structure of existing technologies with additional independent shielding components and corresponding drive systems is eliminated. This significantly simplifies the overall structural layout of the device, reduces the number of parts, and lowers the difficulty of production assembly, manufacturing costs, and the probability of later maintenance failures. At the same time, the tight protection formed by the scraper structure at the shielding position can effectively prevent external dust, debris, water stains, and other impurities from entering the spray nozzle and adhering to the nozzle outlet, avoiding nozzle blockage and scale buildup in the spray pipeline. It can also prevent the nozzle from being damaged by collisions and friction during device movement or storage, significantly improving the service life of the nozzle and the stability and uniformity of the spraying operation. The displacement stroke of the scraper structure in the working position is precisely controllable, ensuring that there are no dead angles in the scraping operation, realizing the coordinated linkage of spraying and scraping, improving cleaning efficiency and cleaning effect. Moreover, the overall structure is compact and adaptable to the assembly requirements of miniaturized and lightweight window cleaning equipment. It effectively solves the technical defects of existing scraper devices such as single function, cumbersome structure, and insufficient nozzle protection, and has high practicality and industrialization value.

[0009] In one embodiment, the scraper device further includes a first guide component connecting the frame and the scraper structure. The first guide component includes a first guide groove structure and a first guide block slidably connected to the first guide groove structure. The length direction of the first guide groove structure is parallel to the moving direction X of the scraper structure. One of the frame and the scraper structure is provided with the first guide groove structure, and the other of the frame and the scraper structure is provided with the first guide block.

[0010] In one embodiment, there are two first guide groove structures, located at both ends of the frame or the scraper structure.

[0011] In one embodiment, the scraper device further includes a second guide component connecting the frame and the scraper structure. The second guide component includes a second guide groove structure and a second guide block slidably connected to the second guide groove structure. The second guide groove structure is located between two first guide groove structures, and the length direction of the second guide groove structure is parallel to the moving direction X of the scraper structure. The second guide groove structure is disposed on the frame, and the second guide block is disposed on the scraper structure.

[0012] In one embodiment, the drive mechanism and the scraper are connected by a transmission assembly, which includes a transmission gear connected to the drive mechanism and a rack disposed on the second guide block. The transmission gear is used to mesh with the rack and to drive the scraper structure to move to the blocking position and the working position.

[0013] In one embodiment, the scraper device further includes an elastic structure connecting the frame and the scraper structure, the elastic structure being used to provide a spring force that drives the scraper structure toward the working position.

[0014] In one embodiment, the scraper structure includes a scraper seat and a scraper body detachably disposed on the scraper seat. The scraper seat is movably connected to the frame, and the scraper body is disposed on the side of the scraper seat near the window glass.

[0015] In one embodiment, the scraper holder has a fixing groove along its own length direction and limiting grooves at both ends along its own length direction. The scraper body is detachably disposed in the fixing groove, and the two ends of the scraper body are provided with limiting structures that are interference fit with the limiting grooves.

[0016] Secondly, a window cleaning device is provided, including a housing, a window cleaning device body and the aforementioned scraper device. The housing is covered on the frame, the window cleaning device body is disposed inside the housing, a movable groove is formed between the housing and the frame, and the scraper structure is in clearance fit with the movable groove.

[0017] By adopting the above technical solution, the technical effect is that the encapsulation design of the shell greatly improves the overall sealing and protection performance of the equipment, effectively blocking the corrosion of internal components by cleaning liquid and dust, extending the service life of the equipment. The gap fit between the movable groove and the scraper structure provides stable space for the scraper movement, taking into account both the flexibility of movement and structural stability, avoiding friction or displacement between the scraper and the shell when it moves. At the same time, the integrated assembly of the shell and the frame makes the overall structure of the equipment compact, optimizing the shape layout and portability of the window cleaning equipment, without affecting the original functions of the scraper device such as detachable maintenance, elastic reset, and precise transmission. It realizes the synergy between overall protection and local execution functions, improves the operational reliability, operational stability and safety of the window cleaning equipment, and is suitable for glass cleaning needs in various scenarios such as home and commercial use.

[0018] In one embodiment, the scraper structure is located on the front and / or rear side of the window cleaning device in the direction of movement X. Attached Figure Description

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

[0020] Figure 1 This is a three-dimensional structural diagram of the scraper device provided in an embodiment of the present invention.

[0021] Figure 2 The explosion of the scraper device provided in the embodiment of the present invention. Figure 1 .

[0022] Figure 3 The explosion of the scraper device provided in the embodiment of the present invention. Figure 2 .

[0023] Figure 4 This is an exploded view of the frame and scraper structure provided in an embodiment of the present invention.

[0024] Figure 5 This is an exploded view of the scraper structure provided in an embodiment of the present invention.

[0025] Figure 6 This is a three-dimensional structural diagram of the window cleaning device body provided in an embodiment of the present invention.

[0026] Figure 7 yes Figure 5 Enlarged view of section "A" in the image.

[0027] Figure 8 This is a cross-sectional view of the scraper device provided in an embodiment of the present invention.

[0028] Figure 9 yes Figure 8 Enlarged view of section "B" in the image.

[0029] The labels for the attached figures are as follows: 1. Frame; 2. Spraying mechanism; 3. Scraper structure; 11. Spraying hole; 4. Scraper drive mechanism; 5. First guide assembly; 51. First guide groove structure; 52. First guide block; 6. Second guide assembly; 61. Second guide groove structure; 62. Second guide block; 7. Transmission assembly; 71. Transmission gear; 72. Rack; 8. Elastic structure; 31. Scraper seat; 32. Scraper body; 311. Fixing groove; 312. Limiting groove; 33. Limiting structure; 10. Housing; 20. Window cleaning device body; 30. Movable groove. Detailed Implementation

[0030] To make the technical problems, solutions, and beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0031] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be located directly on or indirectly on the other component. When a component is referred to as "connected to" another component, it can be directly or indirectly connected to the other component.

[0032] It should be understood that the terms "length", "width", "up", "down", "front", "back", "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 the present invention, and do not indicate that the device or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention.

[0033] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating relative importance or the number of technical features. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified. The specific implementation of this invention will be described in more detail below with reference to specific embodiments: like Figures 1 to 3 As shown, an embodiment of the present invention provides a scraper device, comprising: Frame 1, spraying mechanism 2 mounted on frame 1, scraper structure 3 movably connected to frame 1, and scraper drive mechanism 4 driven by scraper structure 3; The frame 1 is provided with a spray hole 11; the nozzle of the spray mechanism 2 passes through the spray hole 11; the scraper structure 3 can move relative to the frame 1 to a blocking position or a working position; the scraper drive mechanism 4 can drive the scraper structure 3 to move to the blocking position to block the spray hole 11, or the scraper drive mechanism 4 can drive the scraper structure 3 to move to the working position to move away from the spray hole 11 and to scrape the window glass to be cleaned.

[0034] As the core component of the window cleaning equipment, the scraper device is structurally based on the frame 1 as the supporting structure. The frame 1 has a pre-set mounting position for the spray mechanism 2 and a through-hole spray hole 11. The diameter of the spray hole 11 is matched with the outer diameter of the nozzle of the spray mechanism 2 to ensure assembly sealing. The spray mechanism 2 is fixed at the corresponding mounting position on the frame 1, and its nozzle is axially inserted along the spray hole 11, with the nozzle outlet end flush with or slightly protruding from the outer wall of the frame 1 to ensure spray accuracy and avoid excessive nozzle exposure. The scraper structure 3 is assembled with the frame 1 using a sliding or rotating movable connection method. Its structural dimensions are adapted to the scraping range of the window glass to be cleaned. The scraper drive mechanism 4 uses a motor, cylinder, or electromagnetic drive assembly as the power source. It establishes a stable transmission connection with the scraper structure 3 through a gear transmission, linkage transmission, or screw transmission structure to provide controllable driving force to achieve position switching of the scraper structure 3.

[0035] Its working principle is as follows: Based on the cleaning operation requirements, the device selectively drives the scraper structure 3 to reciprocate between the shielding position and the working position relative to the frame 1 after receiving a control signal via the scraper drive mechanism 4. When the device is in a non-operating state (such as storage, movement, or pure dry scraping mode), the scraper drive mechanism 4 drives the scraper structure 3 to the shielding position. At this time, the corresponding shielding area of ​​the scraper structure 3 completely covers the spray holes 11 on the frame 1 and fits tightly against the outer wall of the frame 1, achieving full protection of the spray holes 11 and the nozzles inserted within them. When the cleaning operation is initiated, the scraper drive mechanism 4 first moves the scraper structure 3 from the blocked position to the preset working position, so that the scraper structure 3 is completely separated from the area of ​​the spray hole 11, avoiding interference between the scraper structure 3 and the nozzle. Then, the spray mechanism 2 sprays a metered amount of cleaning liquid onto the surface of the window glass to be cleaned through the nozzle. Simultaneously, the scraper structure 3 performs a reciprocating scraping motion along the glass surface under the drive mechanism, mixing and scraping away the stains, water stains and cleaning liquid on the glass surface. After the cleaning operation is completed, the scraper drive mechanism 4 can drive the scraper structure 3 to return to the blocked position.

[0036] Its technical advantages lie in the integrated design of the scraper structure 3 and the protective function of the spray hole 11, which eliminates the complex structure of existing technologies that require additional independent shielding components and corresponding drive systems. This significantly simplifies the overall structural layout of the device, reduces the number of parts, and lowers the difficulty of production assembly, manufacturing costs, and the probability of later maintenance failures. At the same time, the tight protection formed by the scraper structure 3 at the shielding position can effectively prevent external dust, debris, water stains and other impurities from entering the interior of the spray hole 11 and adhering to the nozzle outlet, avoiding nozzle blockage and scale buildup in the spray pipeline. It can also prevent the nozzle from being damaged by collision and friction during the movement or storage of the device, significantly improving the service life of the nozzle and the stability and uniformity of the spraying operation. The displacement stroke of the scraper structure 3 in the working position is precisely controllable, ensuring that there are no dead angles in the scraping operation, realizing the coordinated linkage of spraying and scraping, improving cleaning efficiency and cleaning effect. Moreover, the overall structure is compact and adaptable to the assembly requirements of miniaturized and lightweight window cleaning equipment. It effectively solves the technical defects of existing scraper devices such as single function, cumbersome structure and insufficient nozzle protection, and has high practicality and industrialization value.

[0037] In one embodiment, the scraper device integrates pressurization and limiting design on the basis of the original structure. The structure still uses the frame 1 as the basic load-bearing component. The frame 1 has a spray hole 11. The spray mechanism 2 is fixed to the frame 1 and the nozzle passes through the spray hole 11. The scraper structure 3 is assembled with the frame 1 in a movable connection that allows for vertical displacement. The scraper drive mechanism 4 is connected to the scraper structure 3 to provide position switching and pressurization power. At the same time, the scraper structure 3 is provided with an upper limit position and a lower limit position, where the upper limit position corresponds to the blocking position and the lower limit position corresponds to the working position. The limiting structure can... The scraper drive mechanism 4, through the limit blocks and limit switches of the frame 1 or guide components, has power adjustment capability to achieve pressurization. Its overall structure is adapted to the operation of the spray mechanism 2 and does not interfere with the nozzle spraying. Its working principle is that the scraper drive mechanism 4 can drive the scraper structure 3 to switch between the upper limit position (covered position) and the lower limit position (working position) relative to the frame 1. The upper limit position (covered position) limits the maximum upward stroke of the scraper structure 3, at which time the scraper structure 3 covers the spray hole 11 for protection, avoiding interference with other components of the device. The lower limit position (working position) is the scraper structure... 3. The scraper structure 3 is positioned at its lower limit against the glass. When the scraper structure 3 moves to the lower limit position (working position), the scraper drive mechanism 4 outputs additional driving force to increase the pressure of the scraper structure 3 on the window glass. This, combined with the cleaning liquid sprayed by the spray mechanism 2 through the nozzle, enhances the scraping effect on stubborn stains. During operation, the scraper structure 3 can switch between the two limit positions as needed, and can maintain appropriate pressure for scraping even when not under pressure. Its technical advantage lies in the precise control of the displacement range and functional suitability of the scraper structure 3 through the corresponding design of the upper limit position (obstruction position) and the lower limit position (working position). To prevent excessive displacement from causing component interference or scratching failure, the pressurization function at the lower limit position (working position) can specifically enhance the cleaning power for stubborn stains, adapting to the cleaning needs of glass with different levels of contamination. The pressurization power is provided by the integrated scraper drive mechanism 4, eliminating the need for additional pressurization components and simplifying the structural layout. At the same time, the pressurization function works in conjunction with the original liquid spraying linkage and scraper position switching functions to ensure both cleaning efficiency and cleanliness, while also accurately protecting the liquid spray hole 11 through the upper limit position, ensuring the overall operational stability of the device and significantly improving the operational adaptability and practical value of the scraper device.

[0038] Please refer to the following: Figure 4 In one embodiment, the scraper device further includes a first guide component 5 connecting the frame 1 and the scraper structure 3. The first guide component 5 includes a first guide groove structure 51 and a first guide block 52 slidably connected to the first guide groove structure 51. The length direction of the first guide groove structure 51 is parallel to the moving direction X of the scraper structure 3. One of the frame 1 and the scraper structure 3 is provided with the first guide groove structure 51, and the other of the frame 1 and the scraper structure 3 is provided with the first guide block 52.

[0039] The scraper device adds a first guide component 5 to the original structure. The first guide component 5 is used to connect the frame 1 and the scraper structure 3. Specifically, it includes a first guide groove structure 51 and a first guide block 52 that are adapted to each other. The two form a sliding connection. The length direction of the first guide groove structure 51 is strictly parallel to the movement direction X of the scraper structure 3 relative to the frame 1. At the same time, an asymmetrical installation method is adopted, that is, the first guide groove structure 51 and the first guide block 52 are respectively set on one of the frame 1 and the scraper structure 3, ensuring that the movement of the scraper structure 3 can be precisely guided and constrained after assembly.

[0040] Its working principle is as follows: when the scraper drive mechanism 4 drives the scraper structure 3 to switch between the blocking position and the working position, the first guide component 5 provides guidance support through the sliding cooperation of the first guide block 52 along the first guide groove structure 51. Since the length direction of the guide groove is consistent with the scraper movement direction X, it can limit the scraper structure 3 to make linear displacement only along the preset trajectory, avoid the scraper structure 3 from deviating, jamming or tilting during the movement, and ensure that the scraper structure 3 can move accurately to the blocking position to completely cover the spray hole 11, or move smoothly to the working position to detach from the spray hole 11 and perform scraping operation.

[0041] The technical effect lies in the fact that by adding a simple and easy-to-assemble first guide component 5, the stability and trajectory accuracy of the scraper structure 3 movement are significantly improved. This effectively avoids problems such as incomplete coverage of the spray hole 11, uneven scraping, and interference with the nozzle caused by scraper deviation. At the same time, the sliding fit structure has low wear and smooth transmission, which can reduce the power loss and operating noise of the scraper drive mechanism 4, extend the overall service life of the device, and the guide component does not require much additional installation space, which is suitable for the compact design requirements of the device. This further optimizes the rationality of the device structure and the reliability of operation, and provides a solid guarantee for the stable linkage between the scraping function and the protection function of the spray hole 11.

[0042] In one embodiment, there are two first guide groove structures 51, which are located at both ends of the frame 1 or the scraper structure 3.

[0043] The first guide component 5 of the scraper device is optimized in terms of structure as two first guide groove structures 51. The two first guide groove structures 51 are symmetrically arranged at both ends of the frame 1 or the scraper structure 3, and form a sliding fit with the first guide block 52 in a one-to-one correspondence. The length direction of each first guide groove structure 51 is parallel to the moving direction X of the scraper structure 3. The assembly method of having a first guide groove structure 51 on one of the frame 1 and the scraper structure 3 and a first guide block 52 on the other is still adopted. The double guide groove structure design at both ends forms a bidirectional guide support for the scraper structure 3.

[0044] Its working principle is as follows: when the scraper drive mechanism 4 drives the scraper structure 3 to switch displacement between the blocking position and the working position, the first guide blocks 52 at both ends of the scraper structure 3 will slide synchronously along the first guide groove structure 51 at the corresponding end. The two first guide groove structures 51 form synchronous guidance and limit constraint from both ends of the scraper structure 3, strictly limiting the scraper structure 3 to move along the preset straight trajectory, avoiding the scraper structure 3 from tilting, twisting, or deviating during the displacement process, ensuring that the scraper structure 3 can move accurately and smoothly to the blocking position to completely block the spray hole 11, or smoothly move to the working position to detach from the spray hole 11 and maintain a flat posture to perform glass scraping operation.

[0045] Its technical advantages lie in the fact that the double guide groove design at both ends makes the scraper structure 3 more evenly stressed during movement, which greatly improves the stability and trajectory accuracy of the scraper structure 3. It effectively solves the problems of scraper deviation, incomplete shielding, and uneven scraping surface that are prone to occur with single guide grooves. At the same time, the guide supports at both ends enhance the structural rigidity of the connection between the scraper structure 3 and the frame 1, reduce wear and jamming at the sliding joint, reduce the power loss of the scraper drive mechanism 4, and extend the service life of the guide components and the entire scraper device. Moreover, the double guide grooves are only arranged at both ends of the frame 1 or the scraper structure 3, without occupying additional installation space in the middle of the device. This balances the improvement of guiding performance with the compactness of the device structure, further ensuring the stable linkage between the scraping function and the protection function of the spray hole 11, and improving the operational reliability and working accuracy of the entire scraper device.

[0046] Please refer to the following: Figure 5 In one embodiment, the scraper device further includes a second guide assembly 6 connecting the frame 1 and the scraper structure 3. The second guide assembly 6 includes a second guide groove structure 61 and a second guide block 62 slidably connected to the second guide groove structure 61. The second guide groove structure 61 is located between two first guide groove structures 51, and the length direction of the second guide groove structure 61 is parallel to the moving direction X of the scraper structure 3. The second guide groove structure 61 is disposed on the frame 1, and the second guide block 62 is disposed on the scraper structure 3.

[0047] The scraper device adds a second guide component 6 to enhance the guiding performance based on the double first guide groove structure 51. Structurally, the second guide component 6 includes a second guide groove structure 61 and a second guide block 62 that slide and cooperate with each other. The second guide groove structure 61 is precisely arranged between the two first guide groove structures 51, and its length direction is parallel to the moving direction X of the scraper structure 3. It adopts the installation method of fixing the second guide groove structure 61 to the frame 1 and the second guide block 62 being assembled to the scraper structure 3. Together with the first guide components 5 at both ends, it forms a three-point guiding layout of "both ends + middle". The connection relationship between the overall guide component and the frame 1 and the scraper structure 3 is adapted to the original assembly logic and does not interfere with the installation and operation of the spraying mechanism 2 and the scraper drive mechanism 4.

[0048] Its working principle is as follows: when the scraper drive mechanism 4 drives the scraper structure 3 to switch between the shielding position and the working position, the first guide blocks 52 at both ends slide along the corresponding first guide groove, and the second guide block 62 in the middle slides synchronously along the second guide groove on the frame 1. The three-point guide structure works together to strictly limit the scraper structure 3 to only move along the preset straight trajectory. This can avoid the middle offset and torsion problems that may occur in the guide at both ends, and also prevent the two ends of the single middle guide from shaking. This ensures that the scraper structure 3 moves smoothly without jamming, accurately aligns with the spray hole 11 to achieve tight shielding, or moves smoothly to the working position to perform scraping operations in a flat posture, forming a smooth coordination with the spraying action of the spraying mechanism 2.

[0049] The technical advantage lies in the fact that the three-point guide layout significantly improves the overall stability and trajectory accuracy of the scraper structure 3 displacement compared to the two-end guide layout. It effectively balances the force on the scraper structure 3, reduces local wear and transmission resistance at the sliding joint, and avoids problems such as incomplete coverage of the spray hole 11 and uneven force on the scraping surface caused by the central offset, resulting in water stains. At the same time, the second guide component 6 is arranged between the two first guide grooves, making reasonable use of space and not occupying the installation area of ​​the spray hole 11 and nozzle. It takes into account both the upgrade of guide performance and the compactness of the device structure, further reduces the power loss of the scraper drive mechanism 4, extends the service life of the device, and provides more comprehensive guide protection for the stable linkage of the scraping function and the spray hole 11 protection function, thereby improving the working accuracy and operational reliability of the entire scraper device.

[0050] In one embodiment, the scraper drive mechanism 4 and the scraper structure 3 are connected by a transmission assembly 7. The transmission assembly 7 includes a transmission gear 71 connected to the scraper drive mechanism 4 and a rack 72 disposed on the second guide block 62. The transmission gear 71 is used to mesh with the rack 72 and to drive the scraper structure 3 to move to the blocking position and the working position.

[0051] The transmission structure of the scraper structure 3 is optimized based on the original guide assembly. In terms of structure, the scraper drive mechanism 4 and the scraper structure 3 transmit power through the transmission assembly 7. The transmission assembly 7 specifically includes a transmission gear 71 and a rack 72. The transmission gear 71 is fixedly connected to the output end of the scraper drive mechanism 4 to obtain power. The rack 72 is integrally formed or fixedly assembled on the second guide block 62. The extension direction of the rack 72 is consistent with the length direction of the second guide groove structure 61 (i.e., the moving direction X of the scraper structure 3). The transmission gear 71 and the rack 72 mesh with each other to form a gear and rack 72 transmission pair. At the same time, this transmission structure is compatible with the three-point guide layout of "first guide assembly 5 at both ends + second guide assembly 6 in the middle", and does not interfere with the sliding fit of the guide assembly and the installation and operation of the spraying mechanism 2.

[0052] Its working principle is that after the scraper drive mechanism 4 is started, it drives the transmission gear 71 to rotate. Through the meshing of the transmission gear 71 and the rack 72 on the second guide block 62, the rotational power is converted into linear driving force, which in turn drives the scraper structure 3 and the second guide block 62 and the first guide blocks 52 at both ends mounted on it to slide synchronously along the second guide groove structure 61 and the first guide groove structure 51 at both ends on the frame 1, respectively. This realizes the smooth switching of the scraper structure 3 between the shielding position and the working position. The meshing transmission of the gear and rack 72 can accurately control the displacement stroke and speed of the scraper structure 3, ensuring that the scraper structure 3 can move accurately to the shielding position to tightly cover the spray hole 11, or move to the working position to perform scraping operations. Moreover, the transmission process is coordinated with the three-point guide structure to avoid the scraper structure 3 from deviating or jamming.

[0053] Its technical advantages lie in the fact that the gear and rack transmission 72 has the advantages of high transmission accuracy, smooth operation and strong load-bearing capacity. Compared with other transmission methods, it can accurately control the position switching of the scraper structure 3. At the same time, the rack 72 is integrated on the second guide block 62, eliminating the need for an additional independent transmission mounting base. It makes reasonable use of the space of the central guide component, simplifies the transmission structure layout and overall assembly complexity, reduces the number of parts to reduce the probability of failure, and the integrated design of the transmission component 7 and the guide component enables the power transmission and trajectory guidance to work together, further improving the stability and accuracy of the movement of the scraper structure 3. It effectively avoids problems such as incomplete coverage of the spray hole 11 and uneven scraping caused by transmission errors, reduces the power loss of the scraper drive mechanism 4, extends the service life of the device, and provides a reliable power transmission guarantee for the stable linkage of scraping and spray hole 11 protection functions.

[0054] like Figure 6 As shown, in one embodiment, the scraper device further includes an elastic structure 8 connecting the frame 1 and the scraper structure 3, the elastic structure 8 being used to provide an elastic force that drives the scraper structure 3 to move toward the working position.

[0055] The scraper device adds an elastic structure 8 to the existing structure. In terms of structure, the two ends of the elastic structure 8 are connected to the frame 1 and the scraper structure 3 respectively. It adopts suitable elastic components such as springs and elastic sheets. Its installation position avoids the guide assembly, transmission assembly 7 and spraying mechanism 2, so as not to interfere with the operation of each component. Its core function is to continuously provide elastic force to drive the scraper structure 3 to move towards the working position. It forms a cooperative structural system with the scraper drive mechanism 4, gear and rack 72 transmission assembly 7 and three-point guide assembly.

[0056] Its working principle is as follows: when the scraper drive mechanism 4 drives the scraper structure 3 to move towards the blocking position through the transmission component 7, the elastic structure 8 is stretched or compressed synchronously to store elastic potential energy. At this time, the elastic force and the driving force of the drive mechanism form a reverse force. When the drive mechanism removes the driving force, the elastic structure 8 releases the stored potential energy. Under the action of the elastic force, the scraper structure 3 is driven to move smoothly towards the working position along the preset trajectory of the guide component (first guide component 5, second guide component 6). At the same time, the gear and rack transmission pair 72 cooperates with the guide structure to ensure that the scraper structure 3 is accurately displaced and without deviation under the elastic force. It can complete the reset to the working position without the drive mechanism providing additional reset power. Moreover, the elastic force can help the scraper structure 3 maintain a stable posture in the working position and avoid deviation from the position due to slight external vibrations.

[0057] The technical effect lies in the addition of the elastic structure 8, which provides elastic assistance for the reset of the scraper structure 3, greatly reducing the load on the scraper drive mechanism 4, reducing drive energy consumption and component wear, improving the response speed and reset reliability of the scraper structure 3 in moving to the working position, effectively avoiding work interruption caused by the scraper structure 3 failing to reset when the drive mechanism fails. At the same time, the elastic structure 8 can provide continuous pre-tension force for the scraper structure 3, making the scraper fit more tightly with the glass in the working position, optimizing the scraping effect. Moreover, the structure is simple and easy to assemble, without occupying too much extra space, taking into account the compactness of the device and the completeness of its functions, further enhancing the stability of the linkage between the scraping function and the protective function of the spray hole 11, and improving the operational reliability and work efficiency of the entire device.

[0058] like Figure 7 As shown, in one embodiment, the scraper structure 3 includes a scraper seat 31 and a scraper body 32 detachably disposed on the scraper seat 31. The scraper seat 31 is movably connected to the frame 1, and the scraper body 32 is disposed on the side of the scraper seat 31 near the window glass.

[0059] The scraper structure 3 of the scraper device adopts a split design to optimize the structural composition. The scraper structure 3 specifically includes a scraper seat 31 and a scraper body 32. The scraper seat 31, as the core load-bearing component, is movably connected to the frame 1 through the first guide component 5 and the second guide component 6. At the same time, the scraper seat 31 is correspondingly connected to the elastic structure 8 and the second guide block 62 in the transmission component 7. The scraper body 32 is assembled onto the scraper seat 31 in a detachable manner such as snap-fit, thread, or plug-in. The scraper body 32 is precisely arranged on the side of the scraper seat 31 near the window glass to be cleaned. The material of the scraper body 32 is adapted to the glass scraping requirements and maintains a flat structure after being assembled with the seat. The overall scraper structure 3, the drive mechanism, the guide component, the transmission component 7, and the elastic structure 8 form a collaborative assembly system and do not interfere with the operation of the spraying mechanism 2.

[0060] Its working principle is that the drive mechanism drives the scraper seat 31 through the gear and rack 72 transmission assembly 7, which switches between the shielding position and the working position along the preset trajectory of the three-point guide assembly. The scraper seat 31 synchronously drives the detachably connected scraper body 32 to move. When in the shielding position, the scraper seat 31 drives the scraper body 32 to cover the spray hole 11 of the frame 1 to achieve protection. When in the working position, the scraper seat 31 drives the scraper body 32 to fit against the window glass, and performs the scraping operation in conjunction with the spraying action of the spraying mechanism 2. The elastic structure 8 provides elasticity to help the scraper seat 31 and the scraper body 32 reset to the working position and maintain the fit with the glass. The detachable design allows the scraper body 32 to be disassembled and installed separately without affecting the assembly accuracy of the scraper seat 31 and other components.

[0061] Its technical advantages lie in the fact that the split and detachable design significantly reduces the difficulty of replacing the scraper body 32 and the maintenance cost, avoiding the need to replace the entire scraper structure 3 after the scraper body 32 wears out, and extending the service life of the scraper seat 31 and related components. The installation position of the scraper body 32 near the glass side ensures a tight fit and thorough scraping effect during scraping. At the same time, the scraper seat 31, as a unified carrier, ensures stable linkage with the guide, transmission, and elastic structure 8, without damaging the original three-point guide, gear and rack 72 transmission, and elastic reset synergy. It takes into account both structural practicality and maintenance convenience, further optimizing the overall service life and operational stability of the device, and adapting to the needs of long-term, high-frequency glass cleaning scenarios.

[0062] In one embodiment, the scraper base 31 is provided with a fixing groove 311 along its own length direction and a limiting groove 312 at both ends along its own length direction. The scraper body 32 is detachably disposed in the fixing groove 311, and the two ends of the scraper body 32 are provided with a limiting structure 33 that is interference-fitted with the limiting groove 312.

[0063] The scraper holder 31 of the scraper device is further optimized in structure to achieve a stable assembly of the scraper body 32. The scraper holder 31 has a fixing groove 311 that adapts to the shape of the scraper body 32 along its own length direction. At the same time, there are limiting grooves 312 at both ends of its length direction. The scraper body 32 is detachably embedded in the fixing groove 311. The two ends of the scraper body 32 are integrally formed or fixedly provided with limiting structures 33. The limiting structures 33 and the limiting grooves 312 of the scraper holder 31 are tightly engaged by an interference fit. The fixing groove 311 forms a circumferential limit on the scraper body 32 along its length direction. The interference fit between the limiting grooves 312 at both ends and the limiting structures 33 forms an axial limit. The two together constitute a double fixing structure of the scraper body 32. The scraper holder 31 is still movably connected to the frame 1 through the guide component and maintains linkage and adaptation with the transmission component 7 and the elastic structure 8 without affecting the overall structural coordination.

[0064] Its working principle is as follows: When assembling the scraper body 32, the scraper body 32 is embedded into the fixing groove 311 of the scraper seat 31 along the length direction, so that the limiting structure 33 at both ends of the scraper body 32 is aligned with the limiting groove 312 at both ends of the seat. The limiting structure 33 and the limiting groove 312 are tightly fitted by the interference fit, and the scraper body 32 is quickly fixed. When disassembling, the limiting structure 33 and the limiting groove 312 can be separated by applying the reverse force, so that the scraper body 32 can be replaced individually. During the operation, when the scraper seat 31 moves under the drive mechanism, transmission component 7 and guide component, the fixing groove 311 and the interference fit limiting structure 33 jointly constrain the scraper body 32 to prevent it from shifting along the length direction, loosening up and down or lifting at both ends, and ensure that the scraper body 32 always adheres to the glass in a flat posture to perform the scraping operation. At the same time, it does not affect the switching between the obstruction position and the working position of the scraper structure 3 and the reset function of the elastic structure 8.

[0065] Its technical advantage lies in the fact that the double fixing structure achieves a stable assembly of the scraper body 32 through interference fit, effectively avoiding problems such as uneven scraping and water stains caused by the loosening and displacement of the scraper body 32 during scraping operations. The fixing groove 311 arranged along the length direction ensures that the scraper body 32 is subjected to balanced force. The interference fit between the limiting structure 33 at both ends and the limiting groove 312 takes into account both the assembly firmness and the ease of disassembly. It does not require additional fasteners, simplifying the assembly process, and can ensure that it still maintains a stable fit after long-term high-frequency scraping. At the same time, the worn scraper body 32 can be replaced quickly and separately, reducing maintenance costs. Moreover, the structural design is adapted to the overall size of the scraper seat 31 and does not affect the linkage with the guide and transmission components 7, ensuring the overall operational stability of the scraper structure 3 and further improving the accuracy and reliability of scraping operations.

[0066] Please refer to the following: Figure 2 , Figure 8 and Figure 9Secondly, a window cleaning device is provided, including a housing 10, a window cleaning device body 20 and the aforementioned scraper device. The housing 10 is covered on the frame 1, the window cleaning device body 20 is disposed inside the housing 10, and a movable groove 30 is formed between the housing 10 and the frame 1. The scraper structure 3 is in clearance fit with the movable groove 30.

[0067] This window cleaning device constitutes a complete cleaning device based on the aforementioned scraper device. The structure includes a housing 10, a window cleaning device body 20, and the aforementioned scraper device. The housing 10 is correspondingly covered on the frame 1 of the scraper device to form an encapsulated protective structure. The window cleaning device body 20 (including core components such as control module and power source) is fixedly assembled inside the housing 10. The housing 10 and the frame 1 are sealed together to form a movable groove 30 that adapts to the movement of the scraper structure 3. The scraper structure 3 (including the scraper seat 31 and the scraper body 32) and the movable groove 30 are set with a clearance fit. The clearance size is precisely controlled to take into account both smooth movement and dustproof sealing. The layout of the housing 10 avoids the nozzle of the spray mechanism 2, the guide component, the transmission component 7, and the elastic structure 8, so as not to interfere with the coordinated operation of each component. The whole forms an integrated structure of "housing 10 protection + internal body + scraper execution".

[0068] Its working principle is that the window cleaning equipment body 20 provides overall control and power support. When the drive mechanism of the drive blade device drives the blade structure 3 to move through the transmission component 7, the blade structure 3 moves back and forth along the movable groove 30. The clearance fit ensures that the blade structure 3 can switch between the blocking position and the working position without jamming or interference. The housing 10 protects the core components of the internal window cleaning equipment body 20 and the blade device, preventing water stains and dust from entering the interior and affecting the operation of the equipment during cleaning. At the same time, the movable groove 30 provides auxiliary limit for the movement of the blade structure 3. With the help of the three-point guide component, the displacement accuracy of the blade structure 3 is further improved. When the blade structure 3 is in the working position, it extends to the outside of the housing 10 through the movable groove 30 to perform the scraping operation against the glass. When in the blocking position, it returns to the movable groove 30 and blocks the spray hole 11. The elastic structure 8 assists in its return and the movable groove 30 can limit the return stroke.

[0069] Its technical advantages lie in the fact that the encapsulation design of the housing 10 significantly improves the overall sealing and protection performance of the equipment, effectively preventing the corrosion of internal components by cleaning liquid and dust, and extending the service life of the equipment. The gap fit between the movable groove 30 and the scraper structure 3 provides stable space for the scraper movement, taking into account both the flexibility of movement and the structural stability, and avoiding friction or displacement between the scraper and the housing 10 when the scraper moves. At the same time, the integrated assembly of the housing 10 and the frame 1 makes the overall structure of the equipment compact, optimizes the shape layout and portability of the window cleaning equipment, and does not affect the original functions of the scraper device such as detachable maintenance, elastic reset, and precise transmission. It realizes the synergy between overall protection and local execution functions, improves the operational reliability, operational stability and safety of the window cleaning equipment, and is suitable for glass cleaning needs in various scenarios such as home and commercial use.

[0070] In one embodiment, the scraper structure 3 is located on the front and / or rear side of the window cleaning device in the direction of movement Y.

[0071] The window cleaning equipment optimizes the installation position of the scraper structure 3 based on the original structure. In terms of structural composition, the scraper structure 3 is arranged on the front and rear sides of the window cleaning equipment in the moving direction X, or simultaneously on the front and rear sides. The scraper structure 3 is still movably connected to the frame 1 through the scraper seat 31, and adapts to the movable groove 30 formed by the housing 10 and the frame 1 and maintains a clearance fit. Its position layout does not interfere with the assembly and operation of the window cleaning equipment body 20, the spraying mechanism 2, the guide component, the transmission component 7 and the elastic structure 8. When arranged on the front and rear sides, a set of drive and guide systems can be shared or independent drives can be configured separately to ensure coordinated adaptation with the overall structure of the equipment.

[0072] Its working principle is as follows: when the window cleaning device moves along the preset trajectory for cleaning, if the scraper structure 3 is located on the front side of the movement direction X, it can contact the glass surface before the main body of the device. In conjunction with the spray mechanism 2, it can spray and scrape away most of the stains and water stains, providing a foundation for subsequent cleaning. If it is located on the rear side, it can finish scraping away the water stains and small stains left after the device moves, improving the cleanliness. If it is set on both the front and rear sides, the front scraper is responsible for the initial scraping and the rear scraper is responsible for the fine finishing, forming a collaborative cleaning operation. The scraper structure 3 achieves position switching through the drive mechanism, transmission component 7 and guide component. When not in operation, it is reset to the movable groove 30 to block the spray hole 11. When in operation, it extends to fit the glass. The elastic structure 8 helps it maintain the fit. The movable groove 30 and the guide component ensure the accuracy of the scraper movement.

[0073] Its technical advantages lie in the fact that the front and rear layout of the scraper structure 3 is adapted to the operation logic of the window cleaning equipment's mobile cleaning. A single front / rear arrangement simplifies the structure and adapts to specific stain scenarios, while a dual front and rear arrangement can achieve a dual cleaning effect of "preliminary scraping + fine finishing," significantly improving the efficiency and cleanliness of glass cleaning. It avoids stain residue or cleaning dead corners caused by a single scraper position. At the same time, the position layout does not affect the equipment's mobility and overall structural compactness. In conjunction with functions such as liquid spray linkage, elastic reset, and precise transmission, it further optimizes the operational adaptability of the window cleaning equipment, adapts to the cleaning needs of glass with different levels of pollution, and enhances the equipment's practical value and market competitiveness.

[0074] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A scraping device, characterized in that, include: The frame (1), the spraying mechanism (2) provided on the frame (1), the scraper structure (3) movably connected to the frame (1), and the scraper drive mechanism (4) pulsatingly connected to the scraper structure (3). The frame (1) is provided with a spray hole (11); the nozzle of the spray mechanism (2) is inserted into the spray hole (11); the scraper structure (3) can move relative to the frame (1) to a blocking position or a working position; the scraper driving mechanism (4) can drive the scraper structure (3) to move to the blocking position to block the spray hole (11), or the scraper driving mechanism (4) can drive the scraper structure (3) to move to the working position to move away from the spray hole (11) and to scrape the window glass to be cleaned.

2. The scraper device as described in claim 1, characterized in that, The scraper device further includes a first guide component (5) connecting the frame (1) and the scraper structure (3). The first guide component (5) includes a first guide groove structure (51) and a first guide block (52) slidably connected to the first guide groove structure (51). The length direction of the first guide groove structure (51) is parallel to the moving direction X of the scraper structure (3). One of the frame (1) and the scraper structure (3) is provided with the first guide groove structure (51), and the other of the frame (1) and the scraper structure (3) is provided with the first guide block (52).

3. The scraper device as described in claim 2, characterized in that, There are two first guide groove structures (51), and the two first guide groove structures (51) are located at both ends of the frame (1) or the scraper structure (3).

4. The scraper device as described in claim 3, characterized in that, The scraper device further includes a second guide component (6) connecting the frame (1) and the scraper structure (3). The second guide component (6) includes a second guide groove structure (61) and a second guide block (62) slidably connected to the second guide groove structure (61). The second guide groove structure (61) is located between two first guide groove structures (51). The length direction of the second guide groove structure (61) is parallel to the moving direction X of the scraper structure (3). The second guide groove structure (61) is provided on the frame (1), and the second guide block (62) is provided on the scraper structure (3).

5. The scraper device as described in claim 4, characterized in that, The drive mechanism and the scraper are connected by a transmission assembly (7). The transmission assembly (7) includes a transmission gear (71) connected to the drive mechanism and a rack (72) provided on the second guide block (62). The transmission gear (71) is used to mesh with the rack (72) and to drive the scraper structure (3) to move to the blocking position and the working position.

6. The scraper device as described in claim 1, characterized in that, The scraper device further includes an elastic structure (8) connecting the frame (1) and the scraper structure (3), the elastic structure (8) being used to provide an elastic force that drives the scraper structure (3) to move toward the working position.

7. The scraper device as described in claim 1, characterized in that, The scraper structure (3) includes a scraper seat (31) and a scraper body (32) detachably disposed on the scraper seat (31). The scraper seat (31) is movably connected to the frame (1), and the scraper body (32) is disposed on the side of the scraper seat (31) near the window glass.

8. The scraper device as described in claim 7, characterized in that, The scraper base (31) has a fixing groove (311) along its own length direction and a limiting groove (312) at both ends of its own length direction. The scraper body (32) is detachably disposed in the fixing groove (311). The two ends of the scraper body (32) are provided with a limiting structure (33) that is interference fit with the limiting groove (312).

9. A window cleaning device, characterized in that, The device includes a housing (10), a window cleaning device body (20), and a scraper device as described in any one of claims 1 to 8. The housing (10) is covered on the frame (1), the window cleaning device body (20) is disposed inside the housing (10), and a movable groove (30) is formed between the housing (10) and the frame (1). The scraper structure (3) is in clearance fit with the movable groove (30).

10. The window cleaning device as described in claim 9, characterized in that, The scraper structure (3) is located on the front and / or rear side of the window cleaning device in the direction of movement X.

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