Cleaning equipment and floor brush assembly

Abstract

The utility model relates to cleaning equipment and a floor brush assembly, the cleaning equipment comprises the floor brush assembly, and the floor brush assembly comprises a floor brush shell, a cleaning unit, a transmission assembly and a scraping strip assembly. The cleaning unit is rotationally connected to the floor brush shell; the transmission assembly comprises a transmission sliding plate controlled by the driving assembly to move relative to the floor brush shell, and the transmission sliding plate at least has a first movement component in the direction perpendicular to the working face in the movement process. The scraping strip assembly is located on the front side of the cleaning unit and movably connected with the transmission sliding plate. The scraping strip assembly is driven by the transmission sliding plate to move in the direction away from or close to the working face, and the scraping strip assembly and the transmission sliding plate have different movement tracks in the movement process. The scraping strip assembly is arranged on the front side of the cleaning unit, and when the scraping strip assembly moves to make contact with the working face, the effect of backward pulling and water scraping can be achieved. The motion trails of the scraping strip assembly and the transmission sliding plate are mutually independent, and therefore the response speed of the scraping strip assembly moving to the attaching working face is increased.

Description

Technical Field

[0001] The present disclosure relates to the technical field of cleaning equipment, and in particular to a cleaning equipment and a floor brush assembly. Background Art

[0002] With economic development and the gradual improvement of people's living standards, a wide variety of cleaning equipment has emerged on the market to save manpower. For example, floor scrubbers operate by alternating forward and backward pushing and pulling movements. Existing floor scrubbers are generally equipped with forward-pushing scrapers to remove residual water stains from the floor during the forward push. However, when the scrubber pulls back, the lack of an effective scraping mechanism leaves a large amount of water stains on the floor, seriously affecting the cleaning effect and user experience.

[0003] Some existing cleaning equipment incorporates a rear-pull scraper to address the problem of residual water stains. However, in actual use, the rear-pull scraper's response speed is slow, failing to adapt to changes in the floor surface, and its insufficient ground pressure makes it difficult to completely remove water stains. The rear-pull scraper also experiences lags during movement, resulting in poor fluidity. Furthermore, the design of the rear-pull scraper affects the overall aesthetics of the cleaning equipment. Utility Model Content

[0004] In order to solve the problems existing in the prior art, the present disclosure provides a cleaning device and a floor brush assembly.

[0005] According to a first aspect of the present disclosure, a cleaning device is provided, the cleaning device comprising a floor brush assembly, the floor brush assembly comprising:

[0006] Floor brush housing;

[0007] a cleaning unit rotatably connected to the floor brush housing and configured to clean a work surface;

[0008] A transmission assembly, the transmission assembly comprising a transmission slide controlled by the drive assembly to move relative to the floor brush housing, the transmission slide being configured to have at least a first movement component in a direction perpendicular to the working surface during movement;

[0009] a scraper bar assembly, the scraper bar assembly being located at the front side of the cleaning unit and being movably connected to the transmission slide;

[0010] The scraper strip assembly is configured to move in a direction away from or close to the working surface under the drive of the transmission slide, and has a different motion trajectory from that of the transmission slide during the movement.

[0011] In one embodiment of the present disclosure, the scraper strip assembly is configured to move in a straight line driven by the transmission slide.

[0012] In one embodiment of the present disclosure, the motion trajectory of any point of the scraper assembly is constructed to have a preset angle with the working surface, and the preset angle has a value range of 70-110°.

[0013] In one embodiment of the present disclosure, the transmission slide is further configured to have a second movement component in the front-rear direction during movement.

[0014] In one embodiment of the present disclosure, the transmission slide is configured to rotate around the axis of the cleaning unit, and the motion trajectories of any two points on the transmission slide are consistent.

[0015] In one embodiment of the present disclosure, the scraper bar assembly is configured to be hinged to the transmission slide.

[0016] In one embodiment of the present disclosure, the floor brush assembly also includes a cover assembly, which together with the floor brush housing forms a cavity for accommodating the cleaning unit; the cover assembly is also provided with an active cavity for sliding of the transmission slide, and the front end of the cover assembly is provided with an opening connected to the active cavity, and the scraper assembly is configured to extend and retract relative to the cover assembly through the opening; the hinged position between the scraper assembly and the transmission slide is constructed to always be located in the active cavity during the process of extending and retracting the scraper assembly.

[0017] In one embodiment of the present disclosure, a hinge groove is provided on one of the scraper strip assembly and the transmission slide, and a hinge shaft is provided on the other one, which extends into the hinge groove and movably cooperates with the hinge groove.

[0018] In one embodiment of the present disclosure, the cover assembly includes a scraping portion disposed at the opening position; the scraping portion is constructed to have an interference fit with the scraping strip assembly at least during the process of the scraping strip assembly moving away from the working surface.

[0019] In one embodiment of the present disclosure, the bottom end of the scraper assembly is provided with an action portion that extends obliquely toward the front side and is used to cooperate with the working surface; when the action portion is in contact with the working surface, at least part of the front edge of the action portion is located outside the projection range of the cover body assembly on the working surface.

[0020] In one embodiment of the present disclosure, at least two first limiting columns are arranged in the active cavity, and at least two first limiting grooves for cooperating with the first limiting columns are arranged on the transmission slide; and at least one second limiting column is also arranged in the active cavity between at least two of the first limiting columns, and at least one second limiting groove for cooperating with the second limiting column is arranged on the scraper assembly.

[0021] In one embodiment of the present disclosure, the transmission assembly further includes a transmission rod having a first end and a second end relative to each other, wherein the first end is connected to the drive assembly, and the second end is transmission-connected to the transmission slide, and the transmission rod swings in a plane under the action of the drive assembly to drive the transmission slide to slide, wherein the second end has a third movement component in the front-to-back direction during the swinging process.

[0022] In one embodiment of the present disclosure, a guide groove extending along the rotation axis of the cleaning unit is provided on the transmission slide, and the second end of the transmission rod is constructed to cooperate with the guide groove to drive the transmission slide to slide during the swing of the transmission rod.

[0023] In one embodiment of the present disclosure, an arc-shaped groove corresponding to the guide groove is provided at the bottom of the movable cavity, and a flange is provided on the second end of the transmission rod, and the flange extends into the guide groove and the arc-shaped groove, and the extension direction of the arc-shaped groove is adapted to the swinging trajectory of the flange; during the swinging of the transmission rod, the flange abuts against the inner wall of the guide groove to drive the transmission slide to slide.

[0024] In one embodiment of the present disclosure, the transmission rod is configured to drive the scraper assembly to move toward the working surface through the transmission slide during the swinging process in the first direction, and when the transmission rod swings in the first direction by a preset angle, there is a predetermined interference between the scraper assembly and the working surface; wherein the preset angle has a value range of 20-40°.

[0025] In one embodiment of the present disclosure, when the scraper strip assembly moves to have the predetermined interference with the working surface, the transmission rod is configured to continue to swing in the first direction under the action of the driving assembly.

[0026] In one embodiment of the present disclosure, when the scraper bar assembly is in a retracted state, the hinge point between the scraper bar assembly and the transmission slide is higher than the rotation axis of the cleaning unit; and when the scraper bar assembly is in an extended state, the hinge point between the scraper bar assembly and the transmission slide is lower than the rotation axis of the cleaning unit.

[0027] According to a second aspect of the present disclosure, a cleaning device is further provided, the cleaning device comprising a floor brush assembly, the floor brush assembly comprising:

[0028] Floor brush housing;

[0029] a cleaning unit rotatably connected to the floor brush housing and configured to clean a work surface;

[0030] A transmission assembly, the transmission assembly comprising a transmission slide that is controlled by the drive assembly to perform curved motion relative to the floor brush housing;

[0031] a scraper bar assembly, the scraper bar assembly being located at the front side of the cleaning unit and being in transmission connection with the transmission slide;

[0032] The scraper strip assembly is configured to move relative to the transmission slide driven by the transmission slide so as to move in a straight line in a direction away from or close to the working surface.

[0033] According to a third aspect of the present disclosure, there is further provided a floor brush assembly, comprising:

[0034] Floor brush housing;

[0035] a cleaning unit rotatably connected to the floor brush housing and configured to clean a work surface;

[0036] A transmission assembly, the transmission assembly comprising a transmission slide controlled by the drive assembly to move relative to the floor brush housing, the transmission slide being configured to have at least a first movement component in a direction perpendicular to the working surface during movement;

[0037] a scraper bar assembly, the scraper bar assembly being located at the front side of the cleaning unit and being movably connected to the transmission slide;

[0038] The scraper strip assembly is configured to move in a direction away from or close to the working surface under the drive of the transmission slide, and has a different motion trajectory from that of the transmission slide during the movement.

[0039] One beneficial effect of the present disclosure is that by arranging a scraper bar assembly on the front side of the cleaning unit, when the scraper bar assembly moves to contact the work surface, it can achieve the effect of pulling back and scraping water, thereby reducing the residual water stains on the ground. Compared with the traditional design without a pull-back scraper bar, the dryness of the work surface after cleaning is improved. Furthermore, the present disclosure adopts a rigid transmission slide for transmission. The transmission slide can smoothly and stably transmit the power of the drive assembly, so that the scraper bar assembly can respond quickly, and the movement process is smooth and without jamming, which greatly improves the transmission stability. In addition, the movable connection structure between the scraper bar assembly and the transmission slide forms a motion decoupling mechanism, so that the motion trajectories of the scraper bar assembly and the transmission slide are independent of each other, and the two have different motion trajectories. Specifically, the scraper bar assembly can move in a straight line, thereby improving the response speed of the scraper bar assembly moving to fit the work surface.

[0040] Other features and advantages of the present disclosure will become apparent from the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0042] Figure 1 This is a structural diagram of a floor brush assembly provided by an embodiment of the present disclosure;

[0043] Figure 2 is a side view of a floor brush assembly provided by an embodiment of the present disclosure;

[0044] Figure 3 is a partial cross-sectional view of a floor brush assembly provided by one embodiment of the present disclosure;

[0045] Figure 4 This is a partial structural diagram of a floor brush assembly provided in one embodiment of the present disclosure;

[0046] Figure 5 This is a schematic structural diagram of a drive assembly, a transmission assembly, and a portion of a cover assembly provided in one embodiment of the present disclosure;

[0047] Figure 6 This is a schematic structural diagram of a cover assembly and a scraper strip assembly provided in one embodiment of the present disclosure;

[0048] Figure 7 This is an exploded view of a cover assembly, a transmission assembly, and a scraper assembly provided in one embodiment of the present disclosure;

[0049] Figure 8 This is an exploded view of the upper cover and scraper strip assembly provided by one embodiment of the present disclosure;

[0050] Figure 9 This is a schematic diagram of the transmission rod structure provided by an embodiment of the present disclosure;

[0051] Figure 10 is a cross-sectional view of a cover assembly provided by an embodiment of the present disclosure;

[0052] Figure 11 It is a schematic diagram of the transmission slide structure provided by an embodiment of the present disclosure.

[0053] Figures 1 to 11 The one-to-one correspondence between the component names and the reference numerals is as follows:

[0054] 1. Floor brush housing; 11. Moving wheel; 12. Sewage suction port; 2. Cleaning unit; 3. Cover assembly; 30. Cavity; 31. Upper cover; 32. Lower cover; 33. Movable cavity; 34. Opening; 35. First limiting column; 36. Scraping part; 37. Second limiting column; 38. Arc groove; 4. Scraping strip assembly; 401. Action part; 402. Connecting part; 41. Hinge groove; 42. Second limiting groove; 50. Driving assembly; 51. Transmission slide; 511. Guide groove; 512. First limiting groove; 513. Hinge shaft; 52. Transmission rod; 521. First end; 522. Second end; 523. Flange; 524. Docking part; 6. Front push scraper; 7. Front spray assembly. DETAILED DESCRIPTION

[0055] Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present disclosure.

[0056] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0057] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0058] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0059] In this document, “upper”, “lower”, “front”, “back”, “left”, “right”, etc. are only used to indicate the relative position relationship between related parts, rather than to limit the absolute positions of these related parts.

[0060] In this article, "first", "second", etc. are only used to distinguish each other, and do not indicate the importance and order, or the prerequisite for each other's existence.

[0061] In this document, “equal”, “same”, etc. are not strictly limited in a mathematical and / or geometric sense, but also include errors that can be understood by those skilled in the art and are allowed in manufacturing or use.

[0062] The present disclosure provides a cleaning device, which can be a handheld cleaning device, such as a handheld cleaning machine, a handheld floor scrubber, or other handheld cleaning devices well known to those skilled in the art. It can also be a mopping robot, a sweeping and mopping robot, or other self-propelled cleaning device used to clean work surfaces that need to be cleaned, such as floors, sofas, and carpets. In an embodiment of the cleaning device of the present disclosure that is a handheld floor scrubber, when the user uses the floor scrubber for cleaning, the user can push the floor scrubber to move on the ground and use the floor brush assembly of the floor scrubber to clean the work surface. In an embodiment of the cleaning device of the present disclosure that is a self-propelled cleaning device, the robot moves on the work surface according to a planned path or based on information detected by various sensors, and completes the cleaning of the work surface.

[0063] Taking the cleaning equipment as a handheld floor scrubber as an example, the cleaning equipment includes a body, a handheld part, and a floor brush assembly connected to the bottom of the body. Figure 1 , which shows a schematic diagram of the floor brush assembly. Specifically, when using this handheld cleaning device, the user can push the handle to move and use the floor brush assembly to clean the work surface. The floor brush assembly is rotatably connected to the body, allowing the body to switch between an upright position and a tilted position. When the cleaning device is cleaning the work surface, the floor brush assembly can maintain contact with the work surface, thereby achieving the purpose of cleaning the dirt on the work surface.

[0064] refer to Figure 1 , for the convenience of the following description, a spatial rectangular coordinate system is established. The cleaning device is configured to move along the X-axis direction, as shown in FIG. Figure 2 As shown, the forward direction is indicated by arrow X1, and the rearward direction is indicated by arrow X2. If the cleaning device is a handheld cleaning device, the user can push and pull the cleaning device back and forth, thereby causing the floor brush assembly to move forward and backward alternately. Within the projection plane on the work surface, define the Y axis perpendicular to the X axis. Specifically, a spatial rectangular coordinate system is established with the work surface as the XY plane, thereby establishing the Z axis extending in the vertical direction.

[0065] refer to Figure 2 The floor brush assembly includes a floor brush housing 1. In one embodiment of the present disclosure, movable wheels 11 are rotatably connected to the floor brush housing 1 to allow the cleaning device to move and perform cleaning operations. When the cleaning device is a handheld cleaning device, the user applies a forward or backward push force to move the cleaning device across the work surface. Alternatively, when the cleaning device of the present disclosure is a cleaning robot, the cleaning device moves across the work surface under the action of its own driving force.

[0066] The cleaning equipment may be equipped with functional components such as a water supply system and a sewage suction system. Specifically, the water supply system may include: a clean water tank, a water pump, a fluid distributor and other structures; the sewage suction system may include: a sewage tank, a recovery channel, a suction motor and other structures. Figure 2 and Figure 3 A sewage suction port 12 may be provided on the floor brush housing 1, and the sewage suction port 12 may be connected to the suction motor through a recovery channel, thereby forming a suction airflow at the sewage suction port 12. The cleaning medium in the clean water tank is sprayed onto the working surface through the fluid distributor under the action of the water pump. Specifically, refer to Figure 1 and Figure 2 The floor brush assembly may be provided with a front spray assembly 7 for spraying water toward the front working surface. The cleaning medium may also be sprayed onto the cleaning unit 2 in the floor brush assembly. The cleaning unit 2 is rotatably connected to the floor brush housing 1 and is configured to clean the working surface, thereby picking up dirt during the rotation process.

[0067] In a specific embodiment of the present disclosure, the cleaning unit 2 may be a roller brush having a cylindrical structure, the outer surface of which may be provided with cleaning cotton, roller brush bristles, or other cleaning elements for cleaning. The cleaning unit 2 extends along the Y-axis, and its rotation axis extends along the Y-axis and is parallel to the work surface. The cleaning unit 2 can wet mop the work surface while rotating.

[0068] The sewage suction port 12 can be located at the rear side of the cleaning unit 2. A scraping strip for interference fit with the cleaning unit 2 can be provided above the sewage suction port 12. During the rotation of the cleaning unit 2, the scraping strip can scrape off the dirt attached to the cleaning unit 2. In addition, some dirt can be separated from the cleaning unit 2 under the action of the centrifugal force of the rotation; the dirt automatically falls to the position corresponding to the sewage suction port 12 under the action of gravity. Under the suction of the suction motor, the dirt separated from the cleaning unit 2 enters the recovery channel through the sewage suction port 12 and is recovered into the sewage tank.

[0069] In one embodiment of the present disclosure, Figure 2 As shown, a front push scraper strip 6 may be provided on the rear side of the cleaning unit 2, as shown in FIG. Figure 3 As shown, the upper end of the front scraping strip 6 can be connected to the sewage suction port 12, and the lower end of the front scraping strip 6 can maintain contact with the working surface. Specifically, the front scraping strip 6 can be made of a material with a certain elasticity, such as rubber, soft glue, etc., so that it can elastically abut against the working surface. In the process of the cleaning equipment moving forward, the front scraping strip 6 can scrape the dirt on the working surface and accumulate the dirt on the working surface below the sewage suction port 12. The cleaning unit 2 and the front scraping strip 6 enclose a relatively closed space with a strong negative pressure effect below the sewage suction port 12, which is conducive to sucking away the dirt that enters below the sewage suction port 12, thereby improving the cleaning efficiency.

[0070] refer to Figures 1 to 3 The floor brush assembly also includes a transmission assembly and a scraper bar assembly 4. The scraper bar assembly 4 is located in front of the cleaning unit 2 along the front-to-back direction of the floor brush assembly (i.e., the X1 direction). The transmission assembly is used to drive the scraper bar assembly 4 in a direction away from or toward the work surface under the action of the drive assembly 50. Specifically, during the forward (X1 direction) movement of the cleaning device (for example, when the user pushes the cleaning device forward), the scraper bar assembly 4 can be located away from the work surface. In this case, the scraper bar assembly 4 does not perform a wiping function, thereby preventing dirt on the work surface from being pushed further away from the cleaning unit 2. At the same time, the scraper bar assembly 4 raised away from the work surface reduces the driving resistance of the cleaning device.

[0071] During the backward movement (X2 direction) of the cleaning device (for example, when the user pulls the cleaning device backward), the scraper assembly 4 can move to contact the working surface, thereby scraping the dirt on the working surface toward the cleaning unit 2, so that the dirt accumulates on the working surface in front of the cleaning unit 2, making it easier for the cleaning unit 2 to pick up the dirt when the cleaning device moves forward next time. At the same time, during the backward pulling of the cleaning device, the scraper assembly 4 can also eliminate the water marks remaining on the working surface in front of the cleaning device, thereby improving the user experience. The present disclosure provides a scraper assembly 4 on the front side of the cleaning unit 2, so that when the scraper assembly 4 moves to contact the working surface, it can achieve the effect of backward wiping. The scraper assembly 4 can work in conjunction with the forward-pushing scraper 6 to form a two-way wiping mechanism, thereby reducing the residual water stains on the ground. Compared with the traditional design without a backward-pull scraper, the dryness of the working surface after cleaning is improved.

[0072] refer to Figure 4 and Figure 5 The transmission assembly includes a transmission slide 51 that is controlled by the drive assembly 50 to move relative to the floor brush housing 1. The transmission slide 51 is configured to have at least a first movement component in a direction perpendicular to the working surface (i.e., the Z-axis direction) during movement. In one embodiment of the present disclosure, the transmission slide 51 is further configured to have a second movement component in a front-to-back direction (i.e., the X-axis direction) during movement. When the transmission slide 51 drives the scraper assembly 4 toward the working surface, the second movement component of the transmission slide 51 is forward and the first movement component is downward; conversely, when the transmission slide 51 drives the scraper assembly 4 away from the working surface, the second movement component of the transmission slide 51 is backward and the first movement component is upward.

[0073] In one embodiment of the present disclosure, a vertical plane perpendicular to the rotation axis of the cleaning unit 2 is defined. Under ideal conditions, ignoring installation errors and micro-deformations during use, the transmission slide 51 is configured to rotate around the axis of the cleaning unit 2, and the motion trajectories of any two points on the transmission slide 51 are consistent and are configured to be located within the vertical plane. Figure 3, the vertical plane defined in this embodiment is the XZ plane of the rotation axis of the cleaning unit 2, Figure 3 That is a partial cross-sectional view of the cleaning equipment on the vertical plane.

[0074] The transmission slide 51 disclosed in the present invention is a rigid plate structure with a stable arc-shaped motion trajectory. Compared with the prior art method of using a pull rope to drive the scraper assembly 4, the flexibility of the pull rope is prone to tensile deformation, relaxation, and other problems, resulting in delayed response and trajectory deviation of the scraper assembly 4. The present invention uses a rigid transmission slide 51 for transmission. With its own rigid structure, it can accurately and stably maintain the preset arc-shaped motion trajectory. The arc-shaped motion trajectory can surround the rotation axis of the cleaning unit 2, thereby allowing the transmission slide 51 to move in a manner that conforms to the contour of the cleaning unit 2, thereby reducing the volume of the floor brush assembly and ensuring the aesthetics of the cleaning equipment.

[0075] During operation, the rigid transmission slide 51 efficiently, smoothly, and stably transmits the power of the drive assembly 50 to the scraper assembly 4, enabling the scraper assembly 4 to respond quickly and move smoothly without stuttering. This significantly improves transmission stability and avoids the reduction in power transmission efficiency caused by the elastic buffering of the flexible cable transmission. Furthermore, the structural design of the rigid transmission slide is better able to cope with the complex stress conditions during cleaning. Compared to cable transmission, which is prone to breakage and slippage due to uneven force, this significantly improves the reliability and durability of the transmission assembly.

[0076] In a specific embodiment of the present disclosure, Figure 11 As shown, the transmission slide plate 51 may be provided with a honeycomb structure, thereby preventing the transmission slide plate 51 from being deformed and further enhancing its structural strength.

[0077] The scraper assembly 4 is movably connected to the transmission slide 51, wherein the scraper assembly 4 is configured to move away from or toward the working surface under the drive of the transmission slide 51 and has a different motion trajectory from the transmission slide 51 during the movement. Figure 3 、 Figure 8 and Figure 11 In one embodiment of the present disclosure, the scraper assembly 4 is hinged to the transmission slide 51. Specifically, a hinge groove 41 is provided on one of the scraper assembly 4 and the transmission slide 51, and a hinge shaft 513 is provided on the other that extends into the hinge groove 41 and movably cooperates with the hinge groove 41. In this embodiment, the hinge shaft 513 is provided on the side of the transmission slide 51 close to the scraper assembly 4, and the hinge groove 41 is provided on the end of the scraper assembly 4 close to the transmission slide 51. Figure 11As shown, two hinge shafts 513 can be provided, and the two hinge shafts 513 are coaxially spaced apart on the left and right sides of the transmission slide 51, and the hinge shafts 513 can extend along the Y-axis direction. In contrast, four hinge grooves 41 can be provided, and the four hinge grooves 41 are respectively used to cooperate with the opposite ends of the two hinge shafts 513.

[0078] The hinge groove 41 has a space for decoupling the hinge shaft 513. Figure 8 , the hinge groove 41 can be constructed as a waist-shaped groove, so that the hinge shaft 513 can achieve relative motion decoupling while rotating in the hinge groove 41. Specifically, in the process of the transmission slide 51 driving the scraper assembly 4 to move toward the working surface, the hinge shaft 513 can move forward and / or downward relative to the hinge groove 41; in the process of the transmission slide 51 driving the scraper assembly 4 to move away from the working surface, the hinge shaft 513 can move backward and / or upward relative to the hinge groove 41. The movable connection structure between the scraper assembly 4 and the transmission slide 51 disclosed in the present invention forms a motion decoupling mechanism, so that the motion trajectories of the scraper assembly 4 and the transmission slide 51 are independent of each other, and the two have different motion trajectories. Specifically, the transmission slide 51 can move along an arc, and the scraper assembly 4 can move along a straight line, thereby improving the response speed of the scraper assembly 4 moving to fit the working surface.

[0079] In one embodiment of the present disclosure, when the scraper bar assembly 4 is in the retracted state, the hinge point between the scraper bar assembly 4 and the transmission slide 51 is higher than the rotation axis of the cleaning unit 2; and when the scraper bar assembly 4 is in the extended state, the hinge point between the scraper bar assembly 4 and the transmission slide 51 is lower than the rotation axis of the cleaning unit 2. Figure 3 As shown, point M is the hinge point between the scraper assembly 4 and the transmission slide 51. When the scraper assembly 4 is in its highest position, away from the work surface, point M is above the rotation axis of the cleaning unit 2. When the scraper assembly 4 is in its lowest position, abutting the work surface, point M is below the rotation axis of the cleaning unit 2. This ensures that the transmission slide 51 has an appropriate range of motion, which not only drives the scraper assembly 4 to fully retract, preventing residual water stains on the scraper assembly 4 and reducing wear caused by exposure to the outside world, but also enables the scraper assembly 4 to quickly respond to switching states, enabling efficient and timely pull-back wiping operations.

[0080] Specifically, the motion trajectory of the transmission slide 51 is arc-shaped, and the motion arc of the transmission slide 51 is less than or equal to 30°. The motion arc of the transmission slide 51 directly affects the telescopic performance of the scraper assembly 4. If the highest and lowest positions of the hinge point M are both below the rotation axis of the cleaning unit 2, that is, the motion arc of the transmission slide 51 is too small, the scraper assembly 4 cannot be fully retracted, which not only increases the risk of wear during the movement of the equipment, but also may cause residual water stains on the scraper assembly 4 to contaminate the cleaned area. If the highest and lowest positions of the hinge point M are both above the rotation axis of the cleaning unit 2, that is, the motion arc of the transmission slide 51 is too large, the motion stroke of the transmission slide 51 is too long, which will cause the scraper assembly 4 to respond slowly when switching from the retracted state to the extended state, and will not be able to perform the back-pull wiping operation in time, thereby reducing the cleaning efficiency.

[0081] In one embodiment of the present disclosure, the scraper assembly 4 is configured to move linearly driven by the transmission slide 51. In some prior art designs, the scraper assembly 4 is integrally or fixedly mounted with the transmission member. This forces the scraper assembly 4 to passively follow the transmission member in an arc, resulting in an inward-curving posture when the scraper assembly 4 contacts the work surface, resulting in poor wiping performance during the rearward pull of the cleaning device. However, the present disclosure articulates the scraper assembly 4 and the transmission slide 51, breaking the tethered motion between the two and allowing the scraper assembly 4 to move linearly.

[0082] Specifically, the motion trajectory of any point on the scraper bar assembly 4 is configured to have a predetermined angle with the work surface. The predetermined angle ranges from 70° to 110°, and can be, for example, 70°, 80°, 90°, 100°, or 110°. The motion trajectory of any point on the scraper bar assembly 4 can extend forward to form an acute angle with the work surface, or backward to form an obtuse angle with the work surface, or at a right angle (i.e., 90°) with the work surface. The motion trajectory of the scraper bar assembly 4 can be at a right angle to the work surface, thereby applying greater vertical pressure to the work surface and improving the wiping performance of the scraper bar assembly 4. The motion trajectory of the scraper bar assembly 4 can also extend forward to form an acute angle with the work surface, preferably an acute angle of 80°. When the scraper bar assembly 4 contacts the work surface at an acute angle, this angle aligns with the rearward movement of the cleaning device, generating a guiding thrust. This rapidly concentrates and removes dirt and water stains from the work surface during the rearward movement, improving cleaning efficiency.

[0083] In one embodiment of the present disclosure, reference Figure 4 、 Figure 5 、 Figure 7 and Figure 9The transmission assembly further includes a transmission rod 52 having a first end 521 and a second end 522 opposite to each other, wherein the first end 521 is connected to the driving assembly 50 and the second end 522 is in transmission connection with the transmission slide 51; the transmission rod 52 swings in a plane under the action of the driving assembly 50 to drive the transmission slide 51 to slide. Figure 5 As shown, the drive assembly 50 may be a servo, with its output end extending upward to connect with the first end 521 of the transmission rod 52, thereby driving the transmission rod 52 to swing back and forth. Specifically, during the swinging process, the second end 521 of the transmission rod 52 has a third component of movement in the fore-aft direction. If the rotation axis of the transmission rod 52 extends along the Z-axis, the transmission rod 52 can swing within a plane parallel to the working surface.

[0084] Furthermore, a guide groove 511 extending along the rotation axis of the cleaning unit 2 is formed on the transmission slide 51, that is, the guide groove 511 extends along the Y-axis direction, and the second end 522 of the transmission rod 52 is configured to cooperate with the guide groove 511 to drive the transmission slide 51 to slide during the swinging of the transmission rod 52. Figure 9 As shown, a downwardly protruding flange 523 is provided on the second end 522 of the transmission rod 52, and the flange 523 extends into the guide groove 511. During the swinging process of the transmission rod 52, the flange 523 is configured to drive the transmission slide plate 51 to slide by abutting the inner wall of the guide groove 511.

[0085] Specifically, the cleaning unit 2 and the guide groove 511 extend along the Y axis. Figure 4 In the viewing direction, the two opposite directions on the Y-axis are denoted as the Y1 direction and the Y2 direction. When the transmission rod 52 rotates clockwise under the action of the drive assembly 50, the flange 523 can exert a force on the inner wall of the lower side of the guide groove 511 and can move in the guide groove 511 along the Y1 direction, thereby causing the transmission slide 51 to drive the scraper assembly 4 toward the working surface. When the transmission rod 52 rotates counterclockwise under the action of the drive assembly 50, the flange 523 can exert a force on the inner wall of the upper side of the guide groove 511 and can move in the guide groove 511 along the Y2 direction, thereby causing the transmission slide 51 to drive the scraper assembly 4 away from the working surface.

[0086] The present invention utilizes a transmission rod 52 that swings within a plane, thereby driving the transmission slide 51 along an arcuate trajectory, thereby driving the scraper bar assembly 4, which is hinged to the transmission slide 51, in a straight line toward or away from the work surface. The transmission assembly of the present invention has a simple structure, and all components involved in the transmission are rigid, thereby improving the structural stability of the transmission assembly. Both the transmission rod 52 and the transmission slide 51 can be plate-shaped, thereby reducing the space occupied by the transmission assembly and facilitating a compact structural design for the cleaning device.

[0087] In one embodiment of the present disclosure, the transmission rod 52 is configured to drive the scraper assembly 4 to move toward the working surface through the transmission slide 51 during the swinging process in the first direction, and when the transmission rod 52 swings in the first direction by a preset angle, there is a predetermined interference between the scraper assembly 4 and the working surface, wherein the preset angle has a value range of 20-40 degrees, for example, the preset angle can be one of 20 degrees, 22 degrees, 25 degrees, 27 degrees, 30 degrees, 32 degrees, 35 degrees, 37 degrees, and 40 degrees, preferably, the preset angle can be 30 degrees. The first direction in this embodiment is Figure 4 In the clockwise direction of the view, when the transmission rod 52 swings in the first direction to reach a preset angle, the scraper assembly 4 has dropped to a predetermined interference fit with the working surface. At this time, the scraper assembly 4 reaches the preset effective fitting position, that is, the wiping function can be realized during the rear pulling process of the cleaning equipment.

[0088] The transmission rod 52 of the present disclosure only requires a small, preset rotation angle to achieve the wiping function. Compared to similar products in the prior art that typically require the output shaft of the drive assembly 50 to rotate 45-90 degrees to achieve wiping, the present disclosure significantly improves the response speed of the descent of the scraper assembly 4. In actual testing, by calculating the time it takes from the activation of the drive assembly 50 to the descent of the scraper assembly 4 to the preset effective contact position, it is found that the corresponding speed of similar products is approximately 1.5-3 times that of the cleaning device of the present disclosure. Therefore, the structure of the present disclosure, in which the transmission rod 52 drives the transmission slide 51 along an arc path, thereby driving the scraper assembly 4 to rise and fall along a straight line, helps increase the lever arm length, thereby enabling the scraper assembly 4 to rise and fall with a smaller rotation angle of the output shaft of the drive assembly 50, thereby achieving a faster response speed. During the brief period when the user pulls back on the cleaning device, the scraper assembly 4 only needs to spend a shorter time moving, thereby increasing the time the scraper assembly 4 engages with the work surface and improving the pull-back wiping effect.

[0089] Furthermore, when the scraper assembly 4 moves to a position with a predetermined interference fit with the working surface, the transmission rod 52 is configured to be able to continue to swing in the first direction under the action of the drive assembly 50. It can be seen that the scraper assembly 4 of the present disclosure is not only effective when it is in the lowest position, but can continue to descend after reaching the effective fitting position. The scraper assembly 4 is usually made of flexible materials such as rubber and soft glue. During the process of continuing to descend, the scraper assembly 4 can be deformed, thereby increasing the fitting area between the scraper assembly 4 and the working surface. The present disclosure provides a certain pressure adjustment range for the scraper assembly 4, thereby facilitating the scraper assembly 4 to adapt to the surface morphology of the working surface and compensate for the assembly size error of the machine. Even if there are certain undulations on the working surface, the scraper assembly 4 can fit closely to the working surface during the process of continuing to descend, thereby ensuring the wiping effect.

[0090] In one embodiment of the present disclosure, reference Figures 6 to 8 、 Figure 10 and Figure 11 The floor brush assembly also includes a cover assembly 3, which, together with the floor brush housing 1, forms a cavity 30 for accommodating the cleaning unit 2. The cover assembly 3 can be mounted on the floor brush housing 1. The cavity 30 formed by the cover assembly 3 and the floor brush housing 1 can have a shape that is compatible with the cleaning unit 2. The cleaning unit 2 can extend from the lower end of the cavity 30 to contact the work surface. The cavity 30 provides protection for the cleaning unit 2 and prevents the cleaning unit 2 from throwing out dirt during rotation.

[0091] refer to Figure 3 and Figure 10 The cover assembly 3 also defines a movable cavity 33 for the transmission slide 51 to slide in. The transmission slide 51 is disposed within the movable cavity 33. Specifically, the cover assembly 3 comprises an upper cover 31 and a lower cover 32 that snap together, with the lower cover 32 being the one closest to the cleaning unit 2. The upper and lower covers 31 and 32 enclose the movable cavity 33. The upper cover 31 protects and decorates the transmission slide 51, preventing it from being exposed and affecting the overall aesthetics of the cleaning apparatus. The lower cover 32 supports the transmission slide 51 and slides with it.

[0092] Specifically, the curvature of the active cavity 33 can be adapted to the cleaning unit 2, and the curvature and motion trajectory of the transmission slide 51 can also be adapted to the cleaning unit 2. As previously described, the transmission slide 51 can move around the rotation axis of the cleaning unit 2. The present disclosure adopts a curved transmission slide 51 and correspondingly provides a cover assembly 3 with an adaptive curved active cavity 33, thereby better fitting the contour of the cleaning unit 2, thereby facilitating the reduction of the volume of the floor brush assembly, achieving a stealth design of the transmission assembly, and ensuring the aesthetics of the cleaning device.

[0093] Furthermore, if Figure 10 As shown, the front end of the cover assembly 3 is provided with an opening 34 that communicates with the active cavity 33. The scraper assembly 4 is configured to extend and retract relative to the cover assembly 3 through the opening 34. When the scraper assembly 4 is away from the working surface, at least a portion of the scraper assembly 4 is located within the active cavity 33. When the scraper assembly 4 moves toward the working surface, the scraper assembly 4 within the active cavity 33 extends outward through the opening 34 until it contacts and engages with the working surface. The opening 34 can guide the scraper assembly 4. Specifically, the orientation of the opening 34 defines the motion trajectory of the scraper assembly 4. The scraper assembly 4 can move along a straight line oriented toward the opening 34.

[0094] In the prior art, for solutions in which the rear scraper strip and the transmission member are movably connected, the connection position between the rear scraper strip and the transmission member is usually exposed to the outside, or, during the movement of the rear scraper strip, the connection position is exposed to the outside for at least part of the time. This makes it easy for dust to enter the connection position between the rear scraper strip and the transmission member, thus reducing the transmission smoothness between the two. Moreover, the connection position easily forms a cleaning dead corner, which makes it difficult for users to clean, resulting in a significant reduction in the user experience. In other solutions, in order to avoid dust from entering the connection, the rear scraper strip and the transmission member can be directly made into an integral structure, but this makes the movement trajectory of the rear scraper strip necessarily consistent with the transmission member, and the movement stroke and response speed of the scraper strip will be limited.

[0095] To address the aforementioned issues, in one embodiment of the present disclosure, the hinged connection between the scraper assembly 4 and the transmission slide 51 is configured to remain within the active cavity 33 throughout the process of extending and retracting the scraper assembly 4. That is, throughout the entire process of the transmission slide 51 driving the scraper assembly 4 in motion, the hinge point M remains within the active cavity 33, thereby allowing the hinge point M to be shielded by the cover assembly 3, achieving a dust-proof effect. By providing a cover assembly 3 with an active cavity 33, the present disclosure prevents dust from entering the location where the scraper assembly 4 and the transmission slide 51 are operatively connected, improving the smoothness of the movement of the scraper assembly 4 driven by the transmission slide 51 and enhancing the user experience.

[0096] In one embodiment of the present disclosure, reference Figure 3 and Figure 8 The bottom end of the scraper bar assembly 4 is provided with an action portion 401 that extends obliquely forward and is designed to engage the work surface. Exemplarily, the action portion 401 may also be referred to as a scraper bar portion, and is used to contact the work surface to scrape away dirt. The scraper bar assembly 4 also includes a connecting portion 402, the upper end of which is hingedly connected to the transmission slide 51 and the lower end of which is connected to the action portion 401. Specifically, when the action portion 401 is in contact with the work surface, at least a portion of the front edge of the action portion 401 is located outside the projection of the cover assembly 3 on the work surface. By providing the action portion 401 that extends obliquely forward, the present disclosure can compensate for the thickness of the front end of the cover assembly 3, thereby achieving the function of close-to-edge wiping. Specifically, when rearward wiping is required at locations such as walls and furniture edges, the scraper bar assembly 4 can be controlled to extend outward, so that at least a portion of the edge of the action portion 401 extends forward beyond the cover assembly 3, thereby extending into blind spots where wiping is difficult, thereby increasing the coverage area of ​​the scraper bar assembly 4.

[0097] When the scraper assembly 4 is extended to cooperate with the working surface to wipe the water, some dirt may be entangled and adsorbed on the scraper assembly 4. In order to prevent the scraper assembly 4 from carrying dirt into the active cavity 33 and causing contamination in the active cavity 33, in one embodiment of the present disclosure, reference is made to Figure 3and Figure 10 The cover assembly 3 includes a scraping portion 36 disposed at the position of the opening 34. The scraping portion 36 is constructed to have an interference fit with the scraping bar assembly 4 at least during the process of the scraping bar assembly 4 moving in a direction away from the working surface. The scraping portion 36 can be disposed at a position close to the opening 34 on the lower shell 32, and the scraping portion 36 is constructed to extend obliquely toward the front side. In the process of retracting into the active cavity 33, the scraping bar assembly 4 can have an interference fit with the scraping portion 36, and the scraping portion 36 can scrape off the dirt remaining on the scraping bar assembly 4, thereby preventing the dirt from entering the active cavity 33 and causing contamination. The cleaning unit 2 can pick up the scraped dirt again during the subsequent cleaning process, thereby achieving comprehensive cleaning.

[0098] In one embodiment of the present disclosure, at least two first limiting portions are provided in the movable cavity 33, and at least two first matching portions for cooperating with the first limiting portions are provided on the transmission slide 51; one of the first limiting portion and the first matching portion is a first limiting column 35, and the other is a first limiting groove 512; the first limiting groove 512 is configured to extend along the motion trajectory of the transmission slide 51. In this embodiment, at least two first limiting columns 35 are provided in the movable cavity 33, and at least two first limiting grooves 512 for cooperating with the first limiting columns 35 are provided on the transmission slide 51. Figure 7 The first limiting portion is four first limiting columns 35 provided in the active cavity 33, and the first limiting columns 35 are protruding from the upper surface of the lower cover 32; the first matching portion is two first limiting grooves 512 provided on the transmission slide 51, such as Figure 11 As shown, the two first limiting grooves 512 can be arranged axially symmetrically. Four first limiting posts 35 are spaced apart and arranged in two rows, each extending through the two first limiting grooves 512. Under the guiding and limiting action of the first limiting posts 35 and the first limiting grooves 512, the transmission slide 51 can only move along the predetermined motion trajectory without tilting during movement, thereby improving the structural stability and smoothness of the transmission assembly.

[0099] In one embodiment of the present disclosure, at least one second limiting portion is provided in the movable cavity 33, and at least one second matching portion for matching with the second limiting portion is provided on the scraper assembly 4; one of the second limiting portion and the second matching portion is a second limiting column 37, and the other is a second limiting groove 42; the second limiting groove 42 is configured to extend along the motion trajectory of the scraper assembly 4. Figure 8In this embodiment, the second limiting portion is a second limiting post 37 disposed within the active cavity 33. The second limiting post 37 protrudes from the center of the lower surface of the upper cover 31. At least one second limiting post 37 is disposed within the active cavity 33 between at least two first limiting posts 35. The second mating portion is a second limiting slot 42 disposed at the center of the connecting portion 402 of the scraper assembly 4. The scraper assembly 4 is provided with at least one second limiting slot 42 for mating with the second limiting post 37. The second limiting post 37 extends through the second limiting slot 42. Under the guiding and limiting action of the second limiting post 37 and the second limiting slot 42, the scraper assembly 4 can only move along a predetermined linear trajectory without skewing during movement. The length of the second limiting slot 42 also limits the maximum travel of the scraper assembly 4, thereby improving the movement stability of the scraper assembly 4.

[0100] In one embodiment of the present disclosure, reference Figure 7 The bottom of the movable cavity 33 is provided with an arcuate groove 38 corresponding to the guide groove 511. Specifically, the arcuate groove 38 can be provided on the lower cover 32, and the flange 523 is configured to guide and cooperate with the arcuate groove 38. In some embodiments, the flange 523 provided at the bottom of the second end 522 can extend into the guide groove 511 and the arcuate groove 38, respectively. The extension direction of the arcuate groove 38 is adapted to the swing trajectory of the flange 523. The arcuate groove 38 can guide and limit the flange 523, thereby limiting the swing path and angle of the transmission rod 52, thereby improving the structural stability of the transmission assembly.

[0101] In one embodiment of the present disclosure, reference Figure 5 、 Figure 6 and Figure 9 The second end 522 of the transmission rod 52 is configured to be located above the cleaning unit 2, the first end 521 of the transmission rod 52 is configured to extend above the floor brush housing 1, and a docking portion 524 for detachably connecting with the drive assembly 50 is formed at the bottom of the cover assembly 3. The transmission rod 52 can be set in the cover assembly 3, and the docking portion 524 set at its first end 521 extends downward and can be exposed to the outside through the through hole on the lower cover 32. The cover assembly 3, the scraper assembly 4, the transmission slide 51 and the transmission rod 52 can together constitute Figure 6 When installing the detachable parts shown, in addition to installing the fasteners on the cover assembly 3 on the floor brush housing 1, it is also necessary to align the docking portion 524 with the output shaft of the drive assembly 50 to ensure that the power of the drive assembly 50 can be normally transmitted to the scraper assembly 4 through the transmission assembly.

[0102] According to a second aspect of the present disclosure, a cleaning device is also provided, comprising a floor brush assembly, the floor brush assembly comprising: a floor brush housing 1, a cleaning unit 2, a transmission assembly, and a scraper assembly 4. The cleaning unit 2 is rotatably connected to the floor brush housing 1 and is configured to clean the work surface; the transmission assembly comprises a transmission slide 51 that is controlled by a drive assembly 50 to perform curved motion relative to the floor brush housing 1; the scraper assembly 4 is located on the front side of the cleaning unit 2 and is in transmission connection with the transmission slide 51; the scraper assembly 4 is configured to move relative to the transmission slide 51 under the drive of the transmission slide 51 so as to move in a straight line away from or toward the work surface. Exemplarily, the transmission slide 51 can be configured to rotate around the axis of the cleaning unit 2. Exemplarily, the scraper assembly 4 can rotate relative to the transmission slide 51 under the drive of the transmission slide 51 so as to move in a straight line away from or toward the work surface. Exemplarily, the scraper assembly 4 can be hinged to the transmission slide 51.

[0103] The present disclosure sets a scraper assembly 4 on the front side of the cleaning unit 2. When the scraper assembly 4 moves to contact the working surface, it can achieve the effect of pulling back and wiping. The scraper assembly 4 can work in conjunction with the forward-pushing scraper 6 to form a two-way wiping mechanism, thereby reducing water stains on the ground. Compared with the traditional design without a rear-pull scraper, the dryness of the working surface after cleaning is improved. Furthermore, the present disclosure adopts a rigid transmission slide 51 for transmission. The transmission slide 51 can smoothly and stably transmit the power of the drive assembly 50, so that the scraper assembly 4 can respond quickly, and the movement process is smooth and without jamming, which greatly improves the transmission stability. In addition, the scraper assembly 4 and the transmission slide 51 have different motion trajectories. Specifically, the transmission slide 51 can fit the cover assembly 3 and adapt to the contour of the cleaning unit 2 to move along an arc, while the scraper assembly 4 can move along a straight line, thereby improving the response speed of the scraper assembly 4 moving to fit the working surface and reducing the volume of the floor brush assembly.

[0104] According to the third aspect of the present disclosure, a floor brush assembly is also provided, comprising: a floor brush housing 1, a cleaning unit 2, a transmission assembly and a scraper assembly 4. The cleaning unit 2 is rotatably connected to the floor brush housing 1 and is configured to clean the working surface; the transmission assembly includes a transmission slide 51 controlled by a drive assembly 50 to move relative to the floor brush housing 1, and the transmission slide 51 is configured to have at least a first moving component in a direction perpendicular to the working surface during the movement; the scraper assembly 4 is located on the front side of the cleaning unit 2 and is movably connected to the transmission slide 51; wherein, the scraper assembly 4 is configured to move in a direction away from or close to the working surface under the drive of the transmission slide 51, and has a different motion trajectory from the transmission slide 51 during the movement. The floor brush assembly can be applied to the cleaning equipment described above, and the specific structure and working principle of the floor brush assembly are completely consistent with those of the floor brush assembly of the cleaning equipment described above, and will not be repeated here.

[0105] Application Scenario

[0106] In the household cleaning scenario, the cleaning equipment is a handheld floor scrubber. During the cleaning task, the user can push and pull the handheld floor scrubber back and forth to achieve better cleaning results.

[0107] During the forward push, the forward scraper bar 6 can scrape dirt from the work surface and cause it to accumulate on the work surface below the suction port 12. The cleaning unit 2 and the forward scraper bar 6 enclose a relatively closed space below the suction port 12, creating a strong negative pressure. This facilitates the removal of dirt that enters below the suction port 12, thereby improving cleaning efficiency. At the same time, the scraper bar assembly 4 can be located away from the work surface. In this case, the scraper bar assembly 4 does not function as a wiper, thereby avoiding pushing dirt on the work surface further away from the cleaning unit 2. Furthermore, the scraper bar assembly 4 raised away from the work surface can reduce the travel resistance of the handheld floor scrubber.

[0108] During the pull-back process, the drive assembly 50 drives the transmission rod 52 to rotate, thereby driving the transmission slide 51 to move along an arc. At this time, the transmission slide 51 has a first forward movement component and a second downward movement component. The transmission slide 51 can drive the scraper assembly 4, which is movably connected to its bottom end, to move in a straight line toward the work surface. The scraper assembly 4 can move until it contacts the work surface, thereby scraping the dirt on the work surface toward the cleaning unit 2, causing the dirt to accumulate on the front working surface of the cleaning unit 2, making it easier for the cleaning unit 2 to pick up the dirt during the next forward movement of the handheld floor scrubber. At the same time, during the pull-back process, the scraper assembly 4 can also eliminate water marks remaining on the front working surface of the handheld floor scrubber, thereby improving the user experience.

[0109] The present invention utilizes a scraper assembly 4 positioned at the front of the cleaning unit 2, enabling a pull-back wiper effect when the scraper assembly 4 moves into contact with the work surface. The scraper assembly 4 works in conjunction with the forward-pushing scraper 6 to form a bidirectional wiping mechanism, thereby reducing residual water stains on the floor and improving the dryness of the work surface after cleaning compared to conventional designs without pull-back scrapers. Furthermore, the articulated connection between the scraper assembly 4 and the transmission slide 51 creates a motion decoupling mechanism, making the motion trajectories of the scraper assembly 4 and the transmission slide 51 independent of each other.

[0110] The embodiments of the present disclosure have been described above. The above description is exemplary, not exhaustive, and is not limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terms used herein are selected to best explain the principles of the embodiments, their practical applications, or technical improvements in the marketplace, or to enable other persons skilled in the art to understand the embodiments disclosed herein. The scope of the present disclosure is defined by the appended claims.

Claims

1. A cleaning device comprising a floor brush assembly, characterized in that: The floor brush assembly comprises: Floor brush housing (1); A cleaning unit (2), the cleaning unit (2) being rotatably connected to the floor brush housing (1) and configured to clean a working surface; A transmission assembly, the transmission assembly comprising a transmission slide (51) controlled by a drive assembly (50) to move relative to the floor brush housing (1), the transmission slide (51) being configured to have at least a first movement component in a direction perpendicular to the working surface during movement; a scraper assembly (4), the scraper assembly (4) being located at the front side of the cleaning unit (2) and being movably connected to the transmission slide (51); The scraper assembly (4) is configured to move in a direction away from or close to the working surface under the drive of the transmission slide (51), and has a different motion trajectory from that of the transmission slide (51) during the movement.

2. The cleaning device according to claim 1, characterized in that The scraper strip assembly (4) is configured to move in a straight line under the drive of the transmission slide (51).

3. The cleaning device according to claim 2, characterized in that The motion trajectory of any point of the scraper assembly (4) is constructed to have a preset angle with the working surface, and the value range of the preset angle is 70-110°.

4. The cleaning device according to claim 1, characterized in that The transmission slide (51) is also configured to have a second movement component in the front-rear direction during movement.

5. The cleaning device according to claim 4, characterized in that The transmission slide (51) is configured to rotate around the axis of the cleaning unit (2), and the motion trajectories of any two points on the transmission slide (51) are consistent.

6. The cleaning device according to any one of claims 1 to 5, characterized in that The scraper strip assembly (4) is constructed to be hinged to the transmission slide (51).

7. The cleaning device according to claim 6, characterized in that The floor brush assembly further comprises a cover assembly (3), wherein the cover assembly (3) and the floor brush housing (1) enclose a cavity (30) for accommodating the cleaning unit (2); the cover assembly (3) is further provided with an active cavity (33) for the transmission slide (51) to slide, and an opening (34) communicating with the active cavity (33) is provided at the front end of the cover assembly (3); the scraper assembly (4) is configured to extend and retract relative to the cover assembly (3) through the opening (34); and the hinged position between the scraper assembly (4) and the transmission slide (51) is constructed so as to always be located in the active cavity (33) during the process of extending and retracting the scraper assembly (4).

8. The cleaning device according to claim 7, characterized in that A hinge groove (41) is provided on one of the scraper assembly (4) and the transmission slide plate (51), and a hinge shaft (513) is provided on the other that extends into the hinge groove (41) and movably cooperates with the hinge groove (41).

9. The cleaning device according to claim 7, characterized in that The cover assembly (3) comprises a scraping portion (36) arranged at the position of the opening (34), and the scraping portion (36) is configured to be interference-fitted with the scraping strip assembly (4) at least during the process of the scraping strip assembly (4) moving in a direction away from the working surface.

10. The cleaning device according to claim 7, characterized in that The bottom end of the scraper assembly (4) is provided with an action portion (401) extending obliquely toward the front and used to cooperate with the working surface. When the action portion (401) is in contact with the working surface, at least part of the front edge of the action portion (401) is located outside the projection range of the cover assembly (3) on the working surface.

11. The cleaning device according to claim 7, characterized in that At least two first limiting columns (35) are provided in the movable cavity (33), and at least two first limiting grooves (512) for cooperating with the first limiting columns (35) are provided on the transmission slide (51); and at least one second limiting column (37) is provided between at least two of the first limiting columns (35) in the movable cavity (33), and at least one second limiting groove (42) for cooperating with the second limiting column (37) is provided on the scraper assembly (4).

12. The cleaning device according to claim 7, characterized in that The transmission assembly further includes a transmission rod (52), the transmission rod (52) having a first end (521) and a second end (522) opposite to each other, wherein the first end (521) is connected to the driving assembly (50), and the second end (522) is in transmission connection with the transmission slide (51), and the transmission rod (52) swings in a plane under the action of the driving assembly (50) to drive the transmission slide (51) to slide, wherein during the swinging process, the second end (522) has a third movement component in the front-rear direction.

13. The cleaning device according to claim 12, characterized in that The transmission slide plate (51) is provided with a guide groove (511) extending in the direction of the rotation axis of the cleaning unit (2), and the second end (522) of the transmission rod (52) is configured to cooperate with the guide groove (511) to drive the transmission slide plate (51) to slide during the swinging of the transmission rod (52).

14. The cleaning device according to claim 13, characterized in that The bottom of the movable cavity (33) is provided with an arcuate groove (38) corresponding to the guide groove (511), and a flange (523) is provided on the second end (522) of the transmission rod (52), and the flange (523) extends into the guide groove (511) and the arcuate groove (38), and the extension direction of the arcuate groove (38) is adapted to the swing trajectory of the flange (523); during the swinging process of the transmission rod (52), the flange (523) abuts against the inner wall of the guide groove (511) to drive the transmission slide plate (51) to slide.

15. The cleaning device according to claim 12, characterized in that The transmission rod (52) is configured to drive the scraper assembly (4) to move toward the working surface via the transmission slide (51) during the process of swinging in the first direction, and when the transmission rod (52) swings in the first direction by a preset angle, a predetermined interference exists between the scraper assembly (4) and the working surface; wherein the preset angle has a value range of 20-40°.

16. The cleaning device according to claim 15, characterized in that When the scraper assembly (4) moves to a position where the predetermined interference exists between the scraper assembly (4) and the working surface, the transmission rod (52) is configured to continue to swing in the first direction under the action of the drive assembly (50).

17. The cleaning device according to claim 6, characterized in that When the scraper bar assembly (4) is in a retracted state, the hinge point between the scraper bar assembly (4) and the transmission slide (51) is higher than the rotation axis of the cleaning unit (2); and when the scraper bar assembly (4) is in an extended state, the hinge point between the scraper bar assembly (4) and the transmission slide (51) is lower than the rotation axis of the cleaning unit (2).

18. A cleaning device comprising a floor brush assembly, characterized in that: The floor brush assembly comprises: Floor brush housing (1); A cleaning unit (2), the cleaning unit (2) being rotatably connected to the floor brush housing (1) and configured to clean a working surface; A transmission assembly, the transmission assembly comprising a transmission slide (51) controlled by the drive assembly (50) to perform curved motion relative to the floor brush housing (1); a scraper assembly (4), the scraper assembly (4) being located at the front side of the cleaning unit (2) and being in transmission connection with the transmission slide (51); The scraper assembly (4) is configured to move relative to the transmission slide (51) under the drive of the transmission slide (51) so as to move in a straight line in a direction away from or close to the working surface.

19. A floor brush assembly, characterized in that: include: Floor brush housing (1); A cleaning unit (2), the cleaning unit (2) being rotatably connected to the floor brush housing (1) and configured to clean a working surface; A transmission assembly, the transmission assembly comprising a transmission slide (51) controlled by a drive assembly (50) to move relative to the floor brush housing (1), the transmission slide (51) being configured to have at least a first movement component in a direction perpendicular to the working surface during movement; a scraper assembly (4), the scraper assembly (4) being located at the front side of the cleaning unit (2) and being movably connected to the transmission slide (51); The scraper assembly (4) is configured to move in a direction away from or close to the working surface under the drive of the transmission slide (51), and has a different motion trajectory from that of the transmission slide (51) during the movement.

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