Scraping strip assembly, floor brush and wet type surface cleaner

Abstract

The utility model provides a scraping strip assembly, which is used for a ground brush of a wet type surface cleaner, and comprises a main frame; the rolling piece is connected to the main frame and can freely rotate relative to the main frame; the scraping strip is pivotally connected to the main frame and can be pivotally rotated to a second position from a first position; the transmission part is pivotally connected to the scraping strip and is coaxially connected with the rolling part; the transmission part and the rolling part are connected through at least one static friction medium, so that static friction force is provided between the transmission part and the rolling part. The utility model further provides a floor brush and a wet type surface cleaner.

Description

Technical Field

[0001] The present disclosure relates to a squeegee assembly, a floor brush, and a wet surface cleaner. Background Art

[0002] There are currently various types of surface cleaners that use vacuum and / or fluid to clean a surface to be cleaned. One type of surface cleaner is called a wet surface cleaner, which uses a cleaning liquid (including clean water) to clean the cleaning surface and then uses a vacuum system to recover the waste liquid from the surface to be cleaned. The wet surface cleaner generally includes a brush roll, a suction nozzle adjacent to the outer surface of the brush roll, and a surface of the suction nozzle that is in fluid communication with a suction source. A fluid recovery passage is in fluid communication with the suction nozzle. The suction nozzle is configured to direct fluid and debris from one of the brush rolls or the surface to a fluid recovery tank. At least one fluid outlet is oriented to distribute fluid from a fluid supply chamber through a fluid delivery channel onto the brush roll. The brush roll is configured to rotatably wipe against the surface to be cleaned. Generally, the surface cleaner is configured with a squeegee adapted to contact the surface to be cleaned, which is disposed behind the bottom of the floor brush and contacts the surface to be cleaned to scrape off the fluid remaining on the surface to be cleaned after the brush roll cleaning. Summary of the Utility Model

[0003] The present disclosure provides a squeegee assembly, a floor brush, and a wet surface cleaner.

[0004] According to one aspect of the present disclosure, there is provided a squeegee assembly for a floor brush of a wet surface cleaner, including:

[0005] A main frame;

[0006] A rolling member, the rolling member being connected to the main frame and capable of freely rotating relative to the main frame;

[0007] A squeegee, the squeegee being pivotally connected to the main frame and capable of pivoting from a first position to a second position;

[0008] A transmission member, the transmission member being pivotally connected to the squeegee and coaxially connected to the rolling member;

[0009] Wherein, the transmission member and the rolling member are connected by at least one static friction medium to provide a static frictional force between the transmission member and the rolling member.

[0010] According to an example of the present disclosure, the transmission member includes a sleeve, the rolling member includes a rotating shaft, the sleeve is coaxially connected to the rotating shaft, and the static friction medium is located between the sleeve and the rotating shaft.

[0011] According to an example of the present disclosure, the static friction medium includes an O-ring, and the O-ring is sleeved on the rotating shaft.

[0012] According to an example of the present disclosure, the transmission member includes a transmission arm, a first end of the transmission arm is pivotally connected to the squeegee, and a second end of the transmission arm opposite to the first end is fixedly connected to the sleeve.

[0013] According to an example of the present disclosure, a limiting structure is included to limit the pivoting angle of the transmission member relative to the main frame.

[0014] According to an example of the present disclosure, the limiting structure includes a limiting protrusion and a limiting groove, and the limiting protrusion is located in the limiting groove.

[0015] According to an example of the present disclosure, the rolling member includes a first roller, and the rotating shaft is located on at least one side of the first roller.

[0016] According to an example of the present disclosure, the rolling member further includes a second roller, and the second roller is engaged with the first roller through a ratchet to enable the second roller to transmit a rotational force to the first roller.

[0017] According to an example of the present disclosure, the ratchet is located on the roller surfaces of the first roller and the second roller.

[0018] According to an example of the present disclosure, there are two transmission members, which are respectively located on both sides of the main frame.

[0019] According to an example of the present disclosure, a synchronizing member is included, and the synchronizing member connects the transmission members on both sides of the main frame together to enable the transmission members on both sides of the main frame to pivot synchronously.

[0020] According to an example of the present disclosure, the squeegee is pivotally connected to the main frame through a pivot arm, wherein a first end of the pivot arm is fixedly connected to the squeegee, and a second end of the pivot arm opposite to the first end is pivotally connected to the main frame.

[0021] According to an example of the present disclosure, the squeegee is pivotally connected to the transmission member through a transmission arm, wherein a first end of the transmission arm is fixedly connected to the squeegee, and a second end of the transmission arm opposite to the first end is pivotally connected to the transmission member.

[0022] According to an example of the present disclosure, the pivot arm and the transmission arm are located on the same side or different sides of the main frame.

[0023] According to an example of the present disclosure, the main frame includes a connecting portion for detachably connecting to the floor brush.

[0024] According to another aspect of the present disclosure, there is provided a floor brush for a wet surface cleaner, including:

[0025] A housing having a receiving portion;

[0026] A vacuum suction port communicating with the receiving portion;

[0027] A brush roller rotatably mounted within the receiving portion, with at least a portion of the brush roller close to the vacuum suction port;

[0028] A squeegee assembly removably mounted to the housing and located on the front side of the brush roller;

[0029] The squeegee assembly includes:

[0030] A squeegee;

[0031] A squeegee driver pivotally connected to the squeegee, including:

[0032] A main frame;

[0033] A rolling member connected to the main frame and capable of freely rotating relative to the main frame;

[0034] A transmission member pivotally connected to the squeegee and coaxially connected to the rolling member;

[0035] The transmission member and the rolling member are connected by at least one static friction medium to provide static friction between the transmission member and the rolling member;

[0036] Wherein, in the working state of the floor brush, the rolling member contacts and rolls on the surface to be cleaned, so that the squeegee pivots between a first position and a second position. In the first position, the squeegee contacts the surface to be cleaned and interferes with the surface to be cleaned. In the second position, the squeegee leaves the surface to be cleaned.

[0037] According to an example of the present disclosure, the transmission member includes a sleeve, the rolling member includes a rotating shaft, the sleeve is coaxially connected to the rotating shaft, and the static friction medium is located between the sleeve and the rotating shaft.

[0038] According to an example of the present disclosure, the transmission member includes a transmission arm, a first end of the transmission arm is pivotally connected to the squeegee, and a second end of the transmission arm opposite to the first end is fixedly connected to the sleeve.

[0039] According to an example of the present disclosure, the rolling member includes a first roller and a second roller that mesh with each other. In the working state of the floor brush, the second roller contacts and rolls on the surface to be cleaned, and transmits a rotational force to the first roller.

[0040] According to an example of the present disclosure, the rotating shaft is located on at least one side of the first roller.

[0041] According to an example of the present disclosure, a limiting structure is included to limit the pivoting angle of the transmission member relative to the main frame, thereby limiting the continued movement of the squeegee when it reaches the first position or the second position.

[0042] According to an example of the present disclosure, when the squeegee reaches the first position or the second position, the transmission member stops pivoting relative to the squeegee, and the rolling member can continue to roll under the action of an external force to overcome the static friction force.

[0043] According to an example of the present disclosure, the limiting structure includes a limiting protrusion and a limiting groove, and the limiting protrusion is located in the limiting groove.

[0044] According to an example of the present disclosure, a synchronizing member is included, and the synchronizing member connects the transmission members on both sides of the main frame together to enable the transmission members on both sides of the main frame to pivot synchronously.

[0045] According to an example of the present disclosure, the squeegee is pivotally connected to the main frame through a pivot arm. Wherein, the first end of the pivot arm is fixedly connected to the squeegee, and the second end of the pivot arm opposite to the first end is pivotally connected to the main frame.

[0046] According to an example of the present disclosure, the squeegee is pivotally connected to the transmission member through a transmission arm. Wherein, the first end of the transmission arm is fixedly connected to the squeegee, and the second end of the transmission arm opposite to the first end is pivotally connected to the transmission member.

[0047] According to an example of the present disclosure, the main frame includes a connecting portion for detachably connecting to the floor brush housing.

[0048] According to an example of the present disclosure, there are at least two or more squeegee drivers, which are connected to the squeegee along the extending direction of the squeegee.

[0049] According to still another aspect of the present disclosure, a wet surface cleaner is provided, which can be operated to reciprocally clean a surface to be cleaned, and includes the floor brush according to any one of the above examples.

[0050] According to an example of the present disclosure, the wet surface cleaner is an autonomous cleaning robot or a floor washer. Description of the Drawings

[0051] To understand the above features of the present disclosure in detail, reference may be made to certain aspects illustrated in the accompanying drawings, and the features briefly outlined above will be described more specifically. It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and should not be considered as limiting its scope, as the present disclosure may include other equally valid aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0052] Figure 1 is a schematic diagram of a wet surface cleaner described according to the present disclosure.

[0053] Figure 2 is a schematic cross-sectional view of a floor brush described according to the present disclosure.

[0054] Figure 3 is a schematic diagram of a squeegee assembly described according to the present disclosure.

[0055] Figure 4 is an exploded schematic diagram of a squeegee assembly described according to the present disclosure.

[0056] Figure 5 is a schematic diagram of a squeegee driver of a squeegee assembly described according to the present disclosure.

[0057] Figure 6 is an exploded schematic diagram of a squeegee driver of a squeegee assembly described according to the present disclosure.

[0058] Figure 7 is a schematic cross-sectional view of a squeegee driver described according to the present disclosure.

[0059] Figure 8 is a schematic diagram of the forward state of a floor brush described according to the present disclosure.

[0060] Figure 9 is a schematic diagram of the reverse state of a floor brush described according to the present disclosure.

[0061] Figure 10 is a cross-sectional view of a floor brush configured with a squeegee assembly described according to the present disclosure. Detailed Description of the Invention

[0062] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. The following will describe various aspects of the present disclosure more comprehensively with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as limited to any specific structure or function described in the present disclosure. On the contrary, these aspects are provided to make the content of the present disclosure comprehensive and complete, and to fully explain the scope of the content of the present disclosure to those skilled in the art. Based on the teachings of the present disclosure, those skilled in the art should understand that the scope of the present disclosure is intended to cover any aspect disclosed herein, whether implemented independently of any other aspect of the present disclosure or in combination with any other aspect of the present disclosure. For example, any aspect described herein can be used to implement a device or implement a method. In addition, the scope of the present disclosure is intended to cover devices or methods implemented using other structures, functions, or combinations of structures and functions in addition to or outside the aspects described herein. It should be understood that any aspect disclosed herein can be embodied by one or more elements of the claims.

[0063] Among various surface cleaners, wet surface cleaners are suitable for deep cleaning of hard floor surfaces such as tiles and hardwood. As Figure 1 shown, a common wet surface cleaner 100 includes an operation handle 110, a main body 120 connected to the operation handle 110, and a floor brush 130 pivotally connected to the main body 120. Wet surface cleaners generally include a fluid delivery system and a fluid recovery system. The former is used to deliver cleaning fluid to the surface to be cleaned, and the latter is used to extract waste liquid and debris from the surface.

[0064] The fluid delivery system generally includes one or more fluid supply tanks for storing cleaning fluid, a fluid dispenser for applying the cleaning fluid to the surface to be cleaned, and a fluid supply line for delivering the cleaning fluid from the fluid supply tank to the fluid dispenser. The floor brush 130 generally includes a brush roll 131 for agitating the cleaning liquid on the surface to be cleaned to soften and dissolve stubborn dirt adhering to the surface to be cleaned. The fluid recovery system generally includes a recovery tank, a suction nozzle adjacent to the surface to be cleaned and in fluid communication with the recovery tank through a working air line, and a vacuum suction source in fluid communication with the working air line for sucking the cleaning fluid from the surface to be cleaned and inhaling it into the recovery tank through the suction nozzle and the working air line.

[0065] There is an ongoing demand for improving floor surface cleaners, including increasing cleaning efficiency, improving control of the cleaning liquid formulation, and other improvements.

[0066] As Figure 2As shown, as a common method for scraping surface water stains, a floor wiper 132 is usually provided at the bottom of a wet surface cleaner, and is disposed adjacent to the brush roller 131 and the suction port 133 behind the brush roller 131. When the floor brush 130 of the wet surface cleaner is located on the surface to be cleaned, the floor wiper 132 contacts the surface to be cleaned interferentially. When the wet surface cleaner moves forward, the residual water stains on the floor can be scraped up. The water scraped up on one side of the floor wiper 132 can be sucked into the recovery box through the suction port 133 under the combined action of the agitation of the brush roller 131 and the vacuum extraction of the suction port 133.

[0067] When the existing wet surface cleaner with the floor wiper 132 moves backward, since the brush roller 131 is already sufficiently wetted and the floor wiper 132 is located at the "relative front" of the brush roller 131 at this time, it cannot play the role of scraping the water stains on the brush roller 131. Therefore, there will still be some water stains remaining on the surface to be cleaned. Especially when the indoor temperature is low or the air humidity is high, the floor is difficult to dry, resulting in a poor user experience.

[0068] One solution is to reduce the amount of fluid distributed to the surface to be cleaned by the fluid dispenser during the backward movement of the wet surface cleaner, which can reduce the water stain residue to a certain extent. However, the reduction in the amount of fluid will also weaken the ability of the brush roller 131 to remove the adhered stains on the surface to be cleaned; moreover, reducing or closing the fluid dispenser according to the moving direction increases the complexity of the control logic.

[0069] As Figure 8 and Figure 9 shown, an example of the present disclosure solution is to provide a pivotable squeegee assembly 200 in front of the brush roller 131 of the floor brush 130 of the surface cleaner to assist in reducing the residual water stains on the floor during the operation of the surface cleaner regardless of its moving direction. Specifically, when the surface cleaner moves forward, the squeegee assembly 200 is synchronously driven to be operated to a first working position, which is away from the surface to be cleaned to prevent interference with the treatment of the surface to be cleaned by the brush roller 131; when the surface cleaner moves backward, the squeegee assembly 200 is synchronously driven to be operated to a second working position. At this second working position, the squeegee 220 contacts the surface to be cleaned interferentially to scrape off the residual water stains on the already cleaned surface. The design of this pivotable squeegee assembly 200 can effectively increase the comprehensive cleaning ability of the floor brush 130, reduce the residues on the floor surface after the cleaning operation, and thus make the floor drier after cleaning based on the efficient cleaning of the floor stains.

[0070] Figures 3 - 7 The figure schematically shows the squeegee assembly 200 of the present disclosure and its components. As Figure 3 and 4The shown squeegee assembly 200 includes at least one squeegee driver 210 and a squeegee 220. At least one squeegee driver 210 is operably distributed along the extending direction of the squeegee 220, and the squeegee driver 210 transmits the driving force to the squeegee 220 through a transmission member 211.

[0071] As Figure 3 and Figure 4 shown, in one example, the squeegee 220 is pivotally connected to the squeegee driver 210 through a pivot arm 221. During the process that the squeegee driver 210 drives the squeegee 220 to pivot through the transmission member 211, the pivot radius of the squeegee 220 is determined by the pivot arm 221. In a specific example, as Figure 3 shown, the first end of the pivot arm 221 is fixedly connected to the squeegee 220, and the second end of the pivot arm 221 opposite to the first end is pivotally connected to the squeegee driver 210 at a connection point P. The above connection point P is the center point of the pivot radius of the squeegee 220. In one example, one end of the pivot arm 221 is connected to the squeegee driver 210 at the connection point P through a support shaft S.

[0072] In one example, the squeegee assembly 200 is generally detachably mounted at the front end of the floor brush 130. In one example, at least one squeegee driver 210 can be detachably arranged at the front edge of the housing of the floor brush 130 to drive the squeegee 220 to pivot in front of the brush roller 131. When pivoted to the second position, the squeegee 220 can interfere with the cleaned surface, so as to scrape the residual water stains on the ground.

[0073] In one example, the squeegee driver 210 can drive the squeegee 220 from the first position to the second position, or from the second position to the first position along with the working stroke of the wet surface cleaner, which requires setting a squeegee actuation mechanism. Exemplarily, as Figures 5 - 7As shown, at least one squeegee driver 210 is provided along the extension direction of the squeegee. The squeegee driver 210 may include at least one rolling member 212 to keep in sync with the movement rhythm of the surface cleaner. The rolling member 212 contacts the surface to be cleaned and has a certain frictional force, so that when the surface cleaner moves forward or backward, the rolling member 212 can roll along with the movement of the surface cleaner. Specifically, when the surface cleaner moves forward, the rolling friction between the rolling member 212 and the surface to be cleaned generates an axial rotational force, which is converted into a lifting pivoting force of the squeegee driver 210 on the squeegee 220 through the transmission member 211, lifting the squeegee 220 to the first position; when the surface cleaner moves backward, the rolling friction between the rolling member 212 and the surface to be cleaned generates a vector rotational force, which is converted into a lowering pivoting force of the squeegee driver 210 on the squeegee 220 through the transmission member 211, lowering the squeegee 220 to the first position. The structural example of the mechanical conversion of the squeegee driver 210 will be described in detail below.

[0074] As Figure 5 , Figure 6 and Figure 7 As shown, in some examples of the present disclosure, the squeegee driver 210 includes a main frame 213. The main frame 213 is generally detachably fixed to the floor brush 130 to be stationary relative to the floor brush 130, thereby forming the basis for the relative movement of the squeegee 220.

[0075] In one example, the upper part of the main frame 213 includes a connecting portion for detachably connecting to the floor brush 130. The connecting portion may include a fixing block and a pressing block. When fixing the main frame 213 to the floor brush cover, the fixing block and the pressing block cooperate to clamp the floor brush cover. In one example, a pre-tightening spring is provided between the fixing block and the pressing block to provide a tension force after the fixing block and the pressing block are fixed to ensure the reliability of the fixing. In one example, the fixing block and the pressing block are connected by fixing screws.

[0076] The squeegee driver 210 includes at least one driving source to provide a force for driving the squeegee 220 for the squeegee driver 210. In one example of the present disclosure, the driving source is the rolling member 212, and the rolling member 212 is connected to the main frame 213 and can rotate freely relative to the main frame 213. When the surface cleaner is working, the rolling member 212 can generate a frictional force with the surface to be cleaned, prompting the rolling member 212 to roll, thereby providing an external driving force input for the driving force of the squeegee 220.

[0077] As Figure 6 and Figure 7As shown, in some examples, the rolling member 212 includes at least one roller. A rotating shaft 2123 of the roller is provided on at least one side of the roller. The rotating shaft 2123 is connected to the transmission member 211 through a coupling, so as to transmit the axial rotational force from the roller to the transmission member 211 to drive the squeegee 220 to move. In one example, the rolling member 212 includes a passive drive wheel 2121 located below the main frame 213 and a transmission wheel 2122 meshing with the passive drive wheel 2121. The rotating shaft 2123 is located on at least one side of the transmission wheel 2122. Both the transmission wheel 2122 and the passive drive wheel 2121 have teeth 2124 on their surfaces. The transmission wheel 2122 and the passive drive wheel 2121 are meshed through the teeth 2124, so that the passive drive wheel 2121 transmits the rotational force to the transmission wheel 2122, and the transmission member 211 combines with the transmission wheel 2122 to receive the force and transmit the driving force to the squeegee 220.

[0078] As Figure 5 and Figure 6 shown, the transmission member 211 generally includes a transmission arm 2111 to pry the squeegee 220 through a lever effect. In one example, the transmission member 211 further includes a sleeve 2112 connected to the transmission arm 2111. The sleeve 2112 is coaxially connected to the rotating shaft 2123 of the rolling member 212 to form an axial force transmission. The transmission arm 2111 and the sleeve 2112 are generally arranged such that their axes are substantially perpendicular to each other to convert the axial rotation of the sleeve 2112 into the swing of the transmission arm 2111.

[0079] In one example, there are two transmission members 211, which are respectively arranged on both sides of the main frame 213 and are respectively axially connected to the rotating shaft 2123 of the rolling member 212. This can ensure balanced force, so as to reduce the swing and vibration during the process of driving the squeegee 220.

[0080] Furthermore, in order to coordinate the action consistency of the two transmission members 211, a synchronizing member 216 is arranged between the two transmission members 211. The synchronizing member 216 connects the transmission members 211 on both sides of the main frame 213 together, so that the transmission members 211 on both sides of the main frame 213 pivot synchronously. In one example, the synchronizing member 216 includes a synchronizing rod 2161 and connecting arms 2162 perpendicularly connected to both ends of the synchronizing rod 2161. The two connecting arms 2162 are detachably and fixedly connected to the transmission member 211 and keep synchronous movement. In one example, after the synchronizing member 216 is installed, at least a part of the connecting arm 2162 is embedded in a fixing groove 2113 formed on the surface of the transmission member 211 and is fixed by fixing members such as screws, so as to maintain highly synchronous movement and facilitate subsequent replacement.

[0081] From Figure 8 and Figure 9It can be seen that the driven range of the squeegee 220 on the floor brush 130 should be restricted between the first position and the second position. Excessive driving will cause opposite effects, damaging the squeegee 220 or affecting the normal operation of the surface cleaner. Therefore, a limit structure needs to be set to prevent over-driving of the squeegee driver 210.

[0082] In one example, at least one limit structure is provided to limit the pivot angle of the transmission member 211 relative to the main frame 213. Specifically, as Figure 6 shown, the limit structure includes a limit protrusion 217 and a limit groove 218. During operation, the limit protrusion 217 is located within the limit groove 218. In an example of the present disclosure, the limit groove 218 is provided on the main frame 213, and the limit protrusion 217 is provided on the transmission member 211. After the transmission member 211 is installed on the main frame 213, the formation of the limit protrusion 217 is restricted by the limit groove 218, so that the rotation of the transmission member 211 relative to the main frame 213 is restricted within the range that allows the squeegee 220 to move between the first position and the second position.

[0083] After the pivot of the transmission member 211 relative to the main frame 213 reaches the limit position, the further pivot of the transmission member 211 on the main frame 213 is restricted.

[0084] In one example, the transmission member 211 is axially connected to the rotating shaft 2123 of the transmission wheel 2122 through a coupling. The axial force of the transmission wheel 2122 is transmitted to the transmission member 211 through the coupling. Specifically, the transmission wheel 2122 includes a rotating shaft 2123, and the transmission member 211 includes a sleeve 2112. The sleeve 2112 is coaxially connected to the rotating shaft 2123, and the coupling is located between the sleeve 2112 and the rotating shaft 2123. In another example, the transmission wheel 2122 may also include a sleeve 2112 concentrically arranged with its axle, the transmission member 211 includes a rotating shaft 2123, and the coupling is located between the sleeve 2112 and the rotating shaft 2123.

[0085] When the surface cleaner is working on the surface to be cleaned, the walking is continuous. At this time, the rolling member 212 is also synchronously driven according to the walking of the surface cleaner. As described above, to ensure that the squeegee 220 is pivoted within a reasonable range, the rotational stroke of the transmission member 211 relative to the main frame 213 cannot be free, and the movement should be restricted at the limit position by the limit structure as described above. However, if after the transmission member 211 reaches the limit position, if the coupling still maintains the shaft connection between the transmission member 211 and the rolling member 212, the rotation of the rolling member 212 will be restricted, resulting in the rolling member 212 changing from rolling friction to sliding friction on the surface to be cleaned, that is, the rolling member 212 is blocked at this time, which will cause wear of the rolling surface material of the rolling member 212 in the long term.

[0086] To ensure that the rolling member 212 can continue to maintain rolling friction after the transmission member 211 reaches the limit position, it is necessary to set the coupling so that before the transmission member 211 reaches the limit position, the coupling plays a role in transmitting the rotational force from the rolling member 212 to the transmission member 211 to drive the squeegee 220 to pivot around the pivot center of the main frame 213. After the transmission member 211 reaches the limit position, the coupling should fail, and the rolling member 212 no longer transmits the rotational force to the transmission member 211.

[0087] In an example of the present disclosure, as Figure 6 and Figure 7 shown, the coupling of the above form is realized by setting an O-ring 219 between the rolling member 212 and the transmission member 211. Specifically, the O-ring 219 is fixed between the outer side of the axle of the transmission wheel 2122 and the inner side of the sleeve 2112 of the transmission member 211. The O-ring 219 forms a static friction force between the transmission wheel 2122 and the transmission member 211, and this static friction force is determined by the material of the O-ring 219. In the present disclosure, the static friction force should be at least greater than the driving force of the transmission member 211 on the squeegee 220 within the limit range. That is to say, during the process of the squeegee moving from the first position to the second position, or from the second position to the first position, the static friction force should ensure that the rolling rotational force of the rolling member 212 is transmitted to the transmission member 211 without being overcome by the rotational force.

[0088] Through the above settings, during the forward and backward movement of the surface cleaner as Figure 8 and Figure 9 shown, the above O-ring 219 plays the role of a coupling. When the transmission member 211 is in the limit position relative to the main frame 213 and the surface cleaner drives the rolling member 212 to move further, the static friction force formed by the O-ring 219 is overcome. At this time, although the rolling member 212 can continue to roll, it cannot transmit the rolling rotational force to the transmission member 211 through the O-ring 219 for further pivoting, thereby preventing the blocking of the rolling member 212.

[0089] As described above, the present disclosure provides Figures 3 - 7 as an example of the squeegee assembly 200. Other examples may differ from Figures 3 - 7 those described.

[0090] Figures 8 - 10 FIG. 130 is a schematic view of the floor brush of a surface cleaner according to an example of the present disclosure. The surface cleaner may be a semi-autonomous surface cleaner that is hand-held by a user. In the normal mode of the user, the semi-autonomous surface cleaner receives operation instructions such as forward and backward caused by the user's hand-held operation, and the surface cleaner automatically performs the actions of removing and recycling stains on the surface to be cleaned. The surface cleaner may also be an autonomous surface cleaner. The surface cleaner may receive or otherwise obtain a set of instructions or parameters for performing an operation, and the surface cleaner may autonomously perform the operation based on the set of instructions or parameters. The surface cleaner may receive a set of instructions or parameters from an operator and / or a controller on the surface cleaner or a controller remote from the surface cleaner.

[0091] In one example, the surface cleaner is a hand-held wet surface cleaner having a housing that includes an upright body and a floor brush 130 as shown. The floor brush 130 is pivotally and / or rotatably mounted to the upright body and is adapted to move on the surface to be cleaned.

[0092] In one example, as Figures 8 - 10 shown, the floor brush 130 may include a cover 134 detachably coupled to the housing of the floor brush 130. The cover 134 may be curved generally in a downward and forward direction to extend to the front side of the brush roller 131.

[0093] The cover 134 may be composed of multiple parts, including an extension part 1341 and a main cover part 1342. In the example shown, the main cover part 1342 is generally disposed behind the extension part 1341, and thus may also be referred to as the cover plate of the brush roller 131 herein, while the extension part 1341 may also be referred to as the squeegee assembly mounting portion herein. In the example, the extension part 1341 and the main cover part 1342 may be integrally formed and detachably connected to the floor brush 130 together.

[0094] In the example shown, the extension part 1341 may define a mounting surface for the detachable mounting of the squeegee assembly 200. In Figures 8 - 10 the example shown, the extension part 1341 includes an extended front end that may be located in front of the brush roller 131 to define the mounting surface.

[0095] In the illustrated example, the extension portion 1341 includes at least one through hole 1343 for engaging with the connecting portion of the squeegee assembly 200 to fix the squeegee assembly 200 thereto. Specifically, in one example, multiple groups of through holes may be included on the extension portion 1341 for receiving multiple connecting portions of the squeegee assembly 200, with each connecting portion corresponding to one squeegee driver 210.

[0096] In one example, multiple interchangeable squeegees 220 may be provided, including any one or all of different materials and textures, so that the squeegee 220 can be selected according to the cleaning task to be performed or the type of floor to be cleaned. The multiple squeegees 220 can all be detachably mounted on the squeegee assembly 200 and have the same mounting structure, so that one squeegee 220 can be replaced with another. For example, during the cleaning task, the dirty squeegee 220 can be replaced with a clean one, thereby extending the cleaning time.

[0097] An example of the floor cleaning method of a surface cleaner equipped with the squeegee assembly of the present disclosure is described below.

[0098] The surface cleaner is placed on the surface to be cleaned, and a closed loop is established between the fluid delivery and recovery systems of the surface cleaner.

[0099] The controller can use the feedback information of the battery monitoring circuit to confirm that the current working mode of floor cleaning has been entered.

[0100] The floor brush is powered on, which can be achieved by supplying power to the electrical components of the floor brush 130 when pressing the power input control of the surface cleaner.

[0101] Cleaning starts, causing the surface cleaner to move forward and start cleaning simultaneously. The surface cleaner delivers the cleaning liquid from the cleaning liquid storage tank to the brush roller 131. The motor of the brush roller 131 is started to rotate the brush roller 131. The rolling member 212 undergoes rolling friction with the surface to be cleaned during the forward movement of the surface cleaner, generating an axial rotational force. The rotating shaft 2123 of the rolling member 212 transmits the axial rotational force to the transmission member 211 through the static friction force of the O-ring. The transmission member 211 converts the axial rotational force into a torque for driving the squeegee 220 to pivot upward through the transmission arm 2111, and the squeegee 220 swings upward and pivots under the action of the pivot arm 221. When the transmission member 211 reaches the limit position (the limit protrusion 217 reaches one end of the limit groove 218), the squeegee 220 reaches the first position. If the surface cleaner continues to move forward, since the movement of the transmission member 211 is restricted, the static friction force of the O-ring 219 is overcome, and the squeegee 220 no longer moves after reaching the first position. The rolling member 212 continues to roll without jamming.

[0102] Move the surface cleaner backward while maintaining the cleaning operation. The surface cleaner conveys the cleaning liquid from the cleaning liquid storage tank to the brush roll 131. The motor of the brush roll 131 is started to rotate the brush roll 131. The rolling member 212 rolls on the surface to be cleaned during the forward and backward movement of the surface cleaner, generating an axial rotational force. The rotating shaft 2123 of the rolling member 212 transmits the axial rotational force to the transmission member 211 through the static friction of the O-ring. The transmission member 211 converts the axial rotational force into a moment to drive the squeegee 220 to pivot downward through the transmission arm 2111. The squeegee 220 swings downward and pivots under the action of the pivot arm 221. When the transmission member 211 reaches the limit position (the limit protrusion 217 reaches the other end of the limit groove 218), the squeegee 220 reaches the second position and interferes with the cleaned surface, hanging up the residual water stains on the cleaned surface, and recovering the accumulated water stains under the action of the brush roll 131 and the vacuum suction. If the surface cleaner continues to move backward, since the movement of the transmission member 211 is restricted, the static friction of the O-ring 219 is overcome, and the squeegee 220 no longer moves after reaching the second position, preventing excessive interference with the cleaned surface, while the rolling member 212 continues to roll without jamming.

[0103] Although the above steps are described separately, it should be noted that the above steps can also occur separately or simultaneously, and can occur within any predetermined time, including overlapping time and non-overlapping time.

[0104] The features of several examples are outlined above so that those skilled in the art can better understand various aspects of the present disclosure. Those skilled in the art should understand that they can design or modify other methods and structures based on the present disclosure at any time to achieve the same purpose and / or achieve the same advantages as the examples introduced herein. Those skilled in the art should also recognize that such equivalent structures do not depart from the spirit and scope of the present disclosure, and they can make various changes, substitutions, and alterations to this document without departing from the spirit and scope of the present disclosure.

Claims

1. A scraper bar assembly for a floor brush of a wet surface cleaner, characterized in that: include: Main frame; A rolling element, the rolling element is connected to the main frame and can rotate freely relative to the main frame; a scraper bar pivotally connected to the main frame and capable of pivoting from a first position to a second position; A transmission member, the transmission member is pivotally connected to the scraper strip and is coaxially connected to the rolling member; Wherein, the transmission member and the rolling member are connected via at least one static friction medium to provide static friction force between the transmission member and the rolling member.

2. The wiper strip assembly according to claim 1, characterized in that: The transmission element includes a sleeve, the rolling element includes a rotating shaft, the sleeve is coaxially connected to the rotating shaft, and the static friction medium is located between the sleeve and the rotating shaft; Optionally, the static friction medium comprises an O-shaped rubber ring, and the O-shaped rubber ring is sleeved on the rotating shaft; Optionally, the transmission member comprises a transmission arm, a first end of the transmission arm is pivotally connected to the scraper strip, and a second end of the transmission arm opposite to the first end is fixedly connected to the sleeve.

3. The wiper strip assembly according to claim 1, characterized in that: A limiting structure is included to limit the pivoting angle of the transmission member relative to the main frame; Optionally, the limiting structure includes a limiting protrusion and a limiting groove, and the limiting protrusion is located in the limiting groove.

4. The wiper strip assembly according to claim 2, characterized in that: The rolling element comprises a first roller, and the rotating shaft is located at at least one side of the first roller; Optionally, the rolling element further comprises a second roller, and the second roller is meshed with the first roller through teeth, so that the second roller transmits a rotational force to the first roller; Optionally, the teeth are located on roller surfaces of the first roller and the second roller.

5. The wiper strip assembly according to claim 1, characterized in that: There are two transmission members, which are respectively located on two sides of the main frame; Optionally, the scraper strip assembly comprises a synchronizing member, which connects the transmission members on both sides of the main frame together so that the transmission members on both sides of the main frame pivot synchronously.

6. The wiper strip assembly according to claim 1, characterized in that: The scraper strip is pivotally connected to the main frame via a pivot arm, wherein a first end of the pivot arm is fixedly connected to the scraper strip, and a second end of the pivot arm opposite to the first end is pivotally connected to the main frame; Optionally, the scraper strip is pivotally connected to the transmission member via a transmission arm, wherein a first end of the transmission arm is fixedly connected to the scraper strip, and a second end of the transmission arm opposite to the first end is pivotally connected to the transmission member; Optionally, the pivot arm and the transmission arm are located on the same side or different sides of the main frame.

7. A floor brush for a wet surface cleaner, characterized in that: include: A housing having a receiving portion; A vacuum suction port connected to the containing portion; a brush roller rotatably mounted in the accommodating portion, with at least a portion of the brush roller being close to the vacuum suction port; A scraper bar assembly is detachably mounted on the housing and is located in front of the brush roller; The scraper strip assembly comprises: scrape strip; A scraper strip driver, the scraper strip driver being pivotally connected to the scraper strip, comprising: Main frame; A rolling element, the rolling element is connected to the main frame and can rotate freely relative to the main frame; A transmission member, the transmission member is pivotally connected to the scraper strip and is coaxially connected to the rolling member; The transmission member and the rolling member are connected via at least one static friction medium to provide static friction between the transmission member and the rolling member; Wherein, when the floor brush is in a working state, the rolling member rolls in contact with the surface to be cleaned so that the scraper bar pivots between a first position and a second position. In the first position, the scraper bar contacts the surface to be cleaned and interferes with the surface to be cleaned, and in the second position, the scraper bar leaves the surface to be cleaned.

8. The floor brush according to claim 7, characterized in that: When the scraper bar reaches the first position or the second position, the transmission member stops pivoting relative to the scraper bar, and the rolling member can overcome the static friction force and continue to roll under the action of external force.

9. The floor brush according to claim 7, characterized in that: The transmission element includes a sleeve, the rolling element includes a rotating shaft, the sleeve is coaxially connected to the rotating shaft, and the static friction medium is located between the sleeve and the rotating shaft; Optionally, the scraper bar assembly includes a limiting structure to limit the pivoting angle of the transmission member relative to the main frame, thereby limiting the scraper bar from continuing to move after reaching the first position or the second position; Optionally, a synchronizing member is included, wherein the synchronizing member connects the transmission members on both sides of the main frame together so that the transmission members on both sides of the main frame pivot synchronously; Optionally, the scraper strip is pivotally connected to the main frame via a pivot arm, wherein a first end of the pivot arm is fixedly connected to the scraper strip, and a second end of the pivot arm opposite to the first end is pivotally connected to the main frame; Optionally, the scraper strip is pivotally connected to the transmission member via a transmission arm, wherein a first end of the transmission arm is fixedly connected to the scraper strip, and a second end of the transmission arm opposite to the first end is pivotally connected to the transmission member; Optionally, the transmission member comprises a transmission arm, a first end of the transmission arm is pivotally connected to the scraper strip, and a second end of the transmission arm opposite to the first end is fixedly connected to the sleeve; Optionally, the rolling element includes a first roller and a second roller meshing with each other, and when the floor brush is in working state, the second roller rolls in contact with the surface to be cleaned, transmitting a rotational force to the first roller; Optionally, there are at least two scraper strip drivers connected to the scraper strip along the extending direction of the scraper strip.

10. A wet surface cleaner operable to reciprocate cleaning a surface to be cleaned, characterized in that: Comprising a floor brush according to any one of claims 7-9.

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