Cleaning device

Abstract

The embodiment of the utility model provides a cleaning device. The cleaning device comprises a floor brush body, a covering part, a cleaning piece, a scraping strip, a driving mechanism and a first position maintaining piece. The covering part is installed on the front side of the floor brush body, the cleaning piece is arranged in a containing cavity defined by the covering part and the floor brush body, and the scraping strip is arranged on the covering part and located on the front side of the cleaning piece. The driving mechanism is used for driving the scraping strip to move from a first position forming a gap with the to-be-cleaned surface to a second position, and the scraping strip is in contact with the to-be-cleaned surface at the second position; the first position keeping part acts on the scraping strip, so that the scraping strip is kept at the second position and is in uniform contact with the to-be-cleaned surface, and the dirt cleaning capacity of the scraping strip is improved.

Description

[0001] This disclosure claims priority to Chinese patent application number 2024221940302, filed with the China Patent Office on September 6, 2024, with the invention name “Cleaning Device”, the entire contents of which are incorporated by reference into this disclosure. Technical Field

[0002] The present disclosure relates to the technical field of cleaning equipment, and in particular to a cleaning device. Background Art

[0003] When the floor scrubber is cleaning the floor, the wet roller brush of the floor scrubber comes into contact with the floor, leaving a water film on the floor. Especially when the user pulls the floor scrubber from behind to clean the floor, the water film remaining on the floor in front of the roller brush is more serious, and the floor takes a long time to dry, affecting the user experience. Utility Model Content

[0004] The embodiments of the present disclosure provide a cleaning device to solve or alleviate one or more technical problems in the prior art.

[0005] As one aspect of an embodiment of the present disclosure, an embodiment of the present disclosure provides a cleaning device, comprising:

[0006] Floor brush body;

[0007] a covering portion, mounted on the front side of the floor brush body, wherein the covering portion and the floor brush body define an accommodating cavity located on the front side of the floor brush body;

[0008] A cleaning member, disposed in the accommodating cavity and configured to contact the surface to be cleaned;

[0009] A scraper bar is provided on the cover portion and is located on the front side of the cleaning member;

[0010] a drive mechanism, coupled with the scraper bar, for driving the scraper bar to move from a first position to a second position, wherein a gap exists between the scraper bar and the surface to be cleaned when the scraper bar is in the first position and the scraper bar contacts the surface to be cleaned when the scraper bar moves to the second position;

[0011] The first position maintaining member acts on the scraper strip when the scraper strip is located at the second position, so that the scraper strip is maintained at the second position.

[0012] The first position retaining member includes a magnetic member and a first magnetic matching member. The magnetic member is arranged on the scraper strip, and the first magnetic matching member is arranged on the covering part. There is a first magnetic force that interacts with the magnetic member and the first magnetic matching member. When the scraper strip is in the second position, the magnetic member and the first magnetic matching member are attracted.

[0013] In one embodiment, the scraping strip extends along the axis of the cleaning element, and in the extension direction of the scraping strip, the first magnetic force acts on a first point of the scraping strip, and the driving mechanism acts on a second point of the scraping strip;

[0014] The first point includes at least one first fulcrum, the second point includes at least one second fulcrum, and a line connecting the at least one first fulcrum and the at least one second fulcrum is not perpendicular to the extension direction of the scraper strip.

[0015] In one embodiment, the drive mechanism is further configured to drive the scraper strip to move from the second position to the first position;

[0016] The cleaning device further comprises: a second position maintaining member, and when the scraping bar is located at the first position, the second position maintaining member acts on the scraping bar to keep the scraping bar at the first position.

[0017] In one embodiment, the second position retaining member includes a magnetic member and a second magnetic matching member, which are arranged in the covering part. There is a second magnetic force that interacts between the magnetic member and the second magnetic matching member. When the scraper is in the first position, the magnetic member and the second magnetic matching member are attracted.

[0018] In one embodiment, the second position and the first position are arranged opposite to each other in the vertical direction, the first magnetic matching member and the second magnetic matching member are arranged opposite to each other in the vertical direction, and the magnetic member is located between the first magnetic matching member and the second magnetic matching member;

[0019] The first magnetic force and the second magnetic force are attractive forces, and the first magnetic matching component is located below the second magnetic matching component in the vertical direction.

[0020] In one embodiment, there are at least two magnetic members, and the magnetic members are spaced apart in the length direction of the scraper strip;

[0021] The covering part includes a floor brush cover body, and the scraper is located on the front side of the floor brush cover body. There are at least two first magnetic matching parts, and each first magnetic matching part corresponds to each magnetic part one by one; two of the first magnetic matching parts are respectively arranged at the front end of the floor brush cover body.

[0022] In one embodiment, there are at least two magnetic parts, and each magnetic part is spaced apart in the length direction of the scraper strip; the covering portion includes a floor brush cover body, and the scraper strip is located on the front side of the floor brush cover body, and there are at least two second magnetic matching parts, and each second magnetic matching part corresponds to each magnetic part one by one; two of the second magnetic matching parts are respectively arranged at the front end of the floor brush cover body at intervals, and are respectively arranged adjacent to the two ends of the floor brush cover body in the length direction.

[0023] In one embodiment, the scraper strip is defined with a first guide hole corresponding to the magnetic member;

[0024] The scraper strip defines a mounting groove in an upper area of ​​the first guide hole, and the magnetic member is disposed in the mounting groove;

[0025] Furthermore, one of the first magnetic matching component and the second magnetic matching component is located in the first guide hole and below the magnetic component, and the other is located outside the first guide hole and above the magnetic component.

[0026] In one embodiment, the cleaning device further comprises a guide bracket, a receiving groove corresponding to the guide bracket is formed on the rear side of the scraper bar, the guide bracket is disposed in the receiving groove, and there is a spacing space between the two sides of the guide bracket in the extension direction of the scraper bar and the two sides of the receiving groove in the extension direction of the scraper bar; a guide slide is defined on the rear side of the guide bracket;

[0027] The covering part includes a floor brush cover body, the scraper bar is located on the front side of the floor brush cover body, and the front side of the floor brush cover body is formed with a forward-protruding guide rib, which slides with the guide slide to guide the scraper bar to move between the second position and the first position.

[0028] In one embodiment, the covering portion includes a floor brush cover body, and the scraper bar is located on the front side of the floor brush cover body, the driving mechanism includes a driving assembly and a transmission member, the driving assembly is arranged on the floor brush body or the floor brush cover body, the transmission member is arranged on the floor brush cover body, and is transmission-connected to the driving assembly and connected to the scraper bar; wherein the driving assembly is configured to drive the transmission member to rotate so that the transmission member drives the scraper bar to move between the second position and the first position.

[0029] In one embodiment, the transmission member comprises:

[0030] A connecting rod, a first end of which is drivingly connected to the driving assembly and rotates under the drive of the driving assembly;

[0031] The first end of the swing arm is connected to the second end of the connecting rod, and the second end of the swing arm is connected to the scraper strip. The swing arm is configured to swing with the rotation of the connecting rod to drive the scraper strip to rise and fall between the second position and the first position.

[0032] In one embodiment, a fitting hole extending along the length direction of the scraper strip is formed on the upper side of the scraper strip, and a connecting shaft extending forward and backward is defined at the second end of the swing arm, and the connecting shaft is slidably engaged with the fitting hole.

[0033] In one embodiment, the matching hole is located in the middle of the scraper strip in the length direction of the scraper strip, and the transmission member is located in the middle of the floor brush cover in the length direction of the floor brush cover.

[0034] In one embodiment, the drive assembly includes a drive member and a coupling, and the first end of the connecting rod is drivingly connected to the drive assembly via the coupling;

[0035] A connecting port is formed at the end of the coupling, and the connecting port is in the shape of an I or a X. The first end of the connecting rod is adapted to the connecting port and is clamped in the connecting port.

[0036] In one embodiment, when the scraper is in the first position, the distance between the lower end of the scraper and the surface to be cleaned is greater than a preset distance, which is the distance between the outer peripheral wall of the cleaning member and the inner wall of the suction port of the cleaning device.

[0037] In one embodiment, when the scraper strip is located at the second position, the interference between the scraper strip and the surface to be cleaned is greater than or equal to the interference between the scraper of the cleaning device located at the rear side of the cleaning member and the surface to be cleaned.

[0038] In one embodiment, the wiper strip comprises:

[0039] The hard part is connected to the driving mechanism in a transmission manner, and the magnetic part is arranged on the hard part;

[0040] The flexible cleaning portion is connected to the lower side of the hard portion and is used for contacting the surface to be cleaned when the scraper is in the second position.

[0041] In one embodiment, the covering portion includes a floor brush cover body and a front cover body, the front cover body is arranged on the outside of the floor brush cover body, and the inner surface of the front cover body and the outer surface of the floor brush cover body define a movable space for the scraper strip to move between the second position and the first position.

[0042] In one embodiment, both ends of the floor brush cover in the length direction are respectively formed with closing portions extending toward the activity space, and the two closing portions respectively close the two ends of the activity space in the length direction.

[0043] In one embodiment, the height of the floor brush at the covering portion is smaller than the height of the floor brush at the rear side of the covering portion.

[0044] In one embodiment, the cleaning device also includes a flexible sealing strip, which is arranged at the front end of the floor brush cover and extends along the length direction of the floor brush cover; when the scraping strip is in the first position, the flexible sealing strip abuts against the rear surface of the flexible cleaning part, and the front area of ​​the upper end face of the flexible cleaning part abuts against the lower end face of the front cover.

[0045] As another aspect of the embodiments of the present disclosure, the embodiments of the present disclosure provide a cleaning device, comprising:

[0046] Floor brush body;

[0047] The cover portion is installed on the front side of the floor brush body, and the cover portion and the floor brush body define an accommodating cavity located on the front side of the floor brush body;

[0048] A cleaning member is disposed in the accommodating cavity and is used to contact the surface to be cleaned;

[0049] A scraper bar is provided on the cover portion and is located on the front side of the cleaning member;

[0050] a drive mechanism, coupled with the scraper bar, for driving the scraper bar to move from a first position to a second position, wherein a gap exists between the scraper bar and the surface to be cleaned when the scraper bar is in the first position and the scraper bar contacts the surface to be cleaned when the scraper bar moves to the second position;

[0051] The magnetic part and the first magnetic matching part are arranged on the scraper strip, and the first magnetic matching part is arranged on the covering part. There is a first magnetic force that interacts between the magnetic part and the first magnetic matching part. The first magnetic force acts on the scraper strip so that the scraper strip has a tendency to move toward the second position.

[0052] In one embodiment, the drive mechanism is further configured to drive the scraper strip to move from the second position to the first position;

[0053] The cleaning device also includes:

[0054] The second magnetic matching piece is arranged on the covering part. There is a second magnetic force that interacts with the magnetic piece and the second magnetic matching piece. The second magnetic force acts on the scraper strip so that the scraper strip has a tendency to move toward the first position.

[0055] In one embodiment, the first magnetic force and the second magnetic force are repulsive forces, and the first magnetic matching component is located on the upper side of the second magnetic matching component in the vertical direction.

[0056] According to the cleaning device of the embodiment of the present disclosure, the drive mechanism drives the scraper bar to move to a second position where it can contact the surface to be cleaned, and the scraper bar is used to scrape off dirt on the surface to be cleaned, thereby reducing residual dirt. When the user pulls back on the cleaning device, the scraper bar moves to the second position and scrapes off dirt on the surface to be cleaned on the front side of the cleaning device, solving the problem of water stains remaining on the ground when the user pulls back on the floor scrubber to clean the ground in the prior art. In addition, the cleaning device of this embodiment adds a first position retaining member on the basis of the drive mechanism, so that when the scraper bar is driven by the drive mechanism to move to the second position, it is affected by the first position retaining member, so that the scraper bar can be stably and evenly maintained in the second position, thereby ensuring that the scraper bar and the surface to be cleaned can be evenly interlocked, thereby improving the dirt cleaning ability of the scraper bar.

[0057] The above summary is for illustrative purposes only and is not intended to be limiting in any way. In addition to the illustrative aspects, embodiments and features described above, further aspects, embodiments and features of the present disclosure will be readily apparent by reference to the accompanying drawings and the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0058] In the accompanying drawings, unless otherwise specified, the same reference numerals throughout the multiple drawings represent the same or similar components or elements. These drawings are not necessarily drawn to scale. It should be understood that these drawings only depict some embodiments according to the present disclosure and should not be regarded as limiting the scope of the present disclosure.

[0059] Figure 1A A schematic diagram showing the exploded structure of a floor brush of a cleaning device according to an embodiment of the present disclosure is shown;

[0060] Figure 1B A schematic cross-sectional view of a floor brush of a cleaning device according to an embodiment of the present disclosure is shown;

[0061] Figure 1C A schematic structural diagram of a floor brush of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar is located in the second position;

[0062] Figure 1D A schematic structural diagram of a floor brush of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar is located in a first position;

[0063] Figure 1E Another schematic structural diagram of a floor brush of a cleaning device according to an embodiment of the present disclosure is shown;

[0064] Figure 2A A schematic structural diagram of a scraping bar and a floor brush cover of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar is located in a second position;

[0065] Figure 2B A schematic front view of the structure of the scraper bar and the floor brush cover of the cleaning device according to an embodiment of the present disclosure is shown, wherein the scraper bar is located in the second position;

[0066] Figure 2C A schematic structural diagram of a scraping bar and a floor brush cover of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar is located in a first position;

[0067] Figure 2D A schematic front view of the structure of a scraper bar and a floor brush cover of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraper bar is in a first position;

[0068] Figure 2E A schematic diagram of the exploded structure of the scraping bar and the floor brush cover of the cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar is hidden;

[0069] Figure 2F A schematic diagram showing the exploded structure of the front cover, scraper bar and floor brush cover of the cleaning device according to an embodiment of the present disclosure is shown;

[0070] Figure 2GA schematic diagram showing the exploded structure of the front cover, scraper bar and floor brush cover of the cleaning device according to an embodiment of the present disclosure;

[0071] Figure 2H Show Figure 2G An enlarged view of M;

[0072] Figure 2I A schematic structural diagram of a guide bracket of a cleaning device according to an embodiment of the present disclosure is shown;

[0073] Figure 2J A schematic diagram showing the assembly structure of the front cover, scraper bar and floor brush cover of the cleaning device according to an embodiment of the present disclosure is shown;

[0074] Figure 3A A schematic structural diagram of a transmission member and a coupling of a cleaning device according to an embodiment of the present disclosure is shown;

[0075] Figure 3B Another structural schematic diagram showing a transmission member and a coupling of a cleaning device according to an embodiment of the present disclosure;

[0076] Figure 3C A schematic diagram showing another structure of a transmission member and a coupling of a cleaning device according to an embodiment of the present disclosure from another perspective;

[0077] Figure 4 A flow chart showing a method for controlling a cleaning device according to an embodiment of the present disclosure;

[0078] Figure 5 An example graph showing a push-pull test of a cleaning device according to an embodiment of the present disclosure, showing a curve showing changes in the movement speed and movement acceleration of the cleaning device over time during the push-pull test;

[0079] Figure 6 A flowchart showing a first example of a method for controlling a cleaning device according to an embodiment of the present disclosure;

[0080] Figure 7 A flowchart showing a second example of a method for controlling a cleaning device according to an embodiment of the present disclosure;

[0081] Figure 8 A flowchart illustrating a third example of the method for controlling the cleaning device according to the embodiment of the present disclosure.

[0082] Description of reference numerals:

[0083] 110 - floor brush cover, 111 - mounting portion, 111a - first mounting protrusion, 111b - second mounting protrusion, 111c - guide channel, 112 - guide portion, 113 - flexible sealing strip, 114 - limiting portion, 114a - first limiting groove, 115 - guide rib;

[0084] 120 - scraper strip, 121 - hard portion, 121a - first guide hole, 121b - second guide hole, 121c - matching hole, 121d - receiving groove, 121e - spacing space, 122 - flexible cleaning portion;

[0085] 130 - driving mechanism, 131 - driving assembly, 132 - connecting rod, 132a - first end of the connecting rod, 132b - second end of the connecting rod, 133 - swing arm, 133a - connecting shaft, 133b - first end of the swing arm, 134 - coupling, 134a - connecting port;

[0086] 140 - magnetic member, 150 - first magnetic matching member, 160 - second magnetic matching member, 170 - fixing member, 170a - second limiting groove, 180 - guide bracket, 181 - guide slide, 182 - protrusion;

[0087] 200 - floor brush, 210 - floor brush body, 211 - accommodating space, 212 - sewage suction channel, 212a - sewage suction port, 220 - cleaning member, 230 - front cover, 240 - upper cover, 250 - drive mounting portion, 260 - scraper, 270 - walking wheel. DETAILED DESCRIPTION

[0088] Hereinafter, only certain exemplary embodiments are briefly described. As will be appreciated by those skilled in the art, the described embodiments may be modified in various ways without departing from the spirit or scope of the present disclosure. Therefore, the drawings and description are to be considered as illustrative in nature and not restrictive.

[0089] Figure 1A FIG. 1 shows a schematic diagram of the exploded structure of the floor brush 200 according to an embodiment of the present disclosure. Figure 1B 1 is a cross-sectional schematic diagram of a floor brush 200 according to an embodiment of the present disclosure, Figure 1C 1 shows a schematic structural diagram of a floor brush 200 according to an embodiment of the present disclosure, wherein the scraping strip 120 is located in the second position; Figure 1D A schematic structural diagram of a floor brush 200 according to an embodiment of the present disclosure is shown, wherein the scraping strip 120 is located in a first position.

[0090] Reference Figures 1A to 1DIn one embodiment of the present disclosure, a cleaning device includes a floor brush 200, which includes a floor brush body 210, a covering portion, a cleaning member 220, and a scraping strip 120. The covering portion is mounted on the front side of the floor brush body 210, and the covering portion and the floor brush body 210 define a receiving cavity located in the front side of the floor brush body 210. In one embodiment, the covering portion includes a floor brush cover 110 and a front cover 230, and the floor brush cover 110 and the floor brush body 210 define a receiving cavity located in the front side of the floor brush body 210, and the front cover 230 covers the outside of the floor brush cover 110.

[0091] The cleaning member 220 is disposed within the accommodating cavity and is configured to contact the surface to be cleaned to clean the surface. The cleaning member 220 may be a roller brush, a brush plate, a cleaning brush, a cleaning cloth, or the like. The present disclosure does not limit the specific structure of the cleaning member 220; the following description will only use a roller brush as an example.

[0092] The scraper bar 120 is disposed on the cover portion and is located in front of the cleaning member 220. In one embodiment, the scraper bar 120 may be disposed on the front cover 230, for example, on the front or rear side of the front cover 230. In another embodiment, the scraper bar 120 may be disposed in front of the floor brush cover 110. The scraper bar 120 in the second position is used to scrape off dirt on the surface to be cleaned that is located in front of the cleaning member 220. The dirt cleaned by the cleaning member 220 and the dirt scraped by the scraper bar 120 enter the dirt suction channel 212 through the dirt suction port 212a of the floor brush 200 and is transported downstream by the dirt suction channel 212.

[0093] In one embodiment of the present disclosure, the cleaning device may be a cleaning device such as a floor scrubber or vacuum cleaner. The cleaning device can be pushed by a user to move across a surface to be cleaned, such as the floor or the surface of an object to be cleaned, to clean the surface. In another embodiment, the cleaning device may be a cleaning robot that can autonomously move across the surface to be cleaned.

[0094] In an embodiment where the cleaning device is a cleaning robot, the floor brush body 210 can move autonomously over the surface to be cleaned, and the cleaning member 220 can be rotatably connected to the floor brush body 210. As the cleaning member 220 moves along the surface to be cleaned, it rolls in contact with the surface to be cleaned, thereby cleaning the surface. Simultaneously, the scraping bar 120 in the second position scrapes away dirt on the surface to be cleaned in front of the cleaning member 220.

[0095] In embodiments where the cleaning device is a floor scrubber or vacuum cleaner, the cleaning device may further include a main unit. The main unit is generally connected to the floor brush 200 via a dirt conveying pipe. The user grips the main unit to move the floor brush 200 over the surface to be cleaned. As the floor brush 200 moves, the cleaning element 220 of the floor brush 200 rolls in contact with the surface to be cleaned, cleaning the area it passes over. Simultaneously, the scraping bar 120 in the second position scrapes dirt off the surface to be cleaned in front of the cleaning element 220.

[0096] A running wheel 270 is generally mounted on the rear side of the floor brush body 210 of the cleaning device, and the running wheel 270 and the cleaning member 220 are spaced apart in the direction of movement of the floor brush body 210. In the disclosed embodiment, the following description of the disclosure is based on the direction from the running wheel 270 toward the cleaning member 220 being the front, and the direction from the cleaning member 220 toward the running wheel 270 being the rear.

[0097] Figure 2A The structure diagram of the scraper bar 120 and the floor brush cover 110 of the cleaning device according to the embodiment of the present disclosure is shown, wherein the scraper bar 120 is located in the second position. Figure 2B A front structural schematic diagram of the scraping bar 120 and the floor brush cover 110 of the cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar 120 is located in the second position; Figure 2C A schematic structural diagram of a scraping bar 120 and a floor brush cover 110 of a cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar 120 is located in a first position; Figure 2D A front structural schematic diagram of the scraping bar 120 and the floor brush cover 110 of the cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar 120 is located in a first position; Figure 2E A schematic diagram of the exploded structure of the scraping bar 120 and the floor brush cover 110 of the cleaning device according to an embodiment of the present disclosure is shown, wherein the scraping bar 120 is hidden.

[0098] Reference Figures 2A to 3B , and combined with Figures 1A to 1D The structures of the scraper strip 120 and the floor brush cover 110 are described in detail as follows.

[0099] The cleaning device also includes a driving mechanism 130, which is in transmission cooperation with the scraper 120 and is used to drive the scraper 120 to move from a first position to a second position. When the scraper 120 is in the first position, there is a gap between it and the surface to be cleaned. When the scraper 120 moves to the second position, it contacts the surface to be cleaned, thereby scraping off the dirt on the surface to be cleaned on the front side of the cleaning member 220 and reducing the dirt remaining on the surface to be cleaned.

[0100] The scraper bar 120 extends in the axial direction of the cleaning member 220, and the extended length of the scraper bar 120 is no less than the axial length of the cleaning member 220. Actual product testing revealed that the transmission connection between the drive mechanism 130 and the scraper bar 120 is not distributed along the entire length of the scraper bar 120. As the scraper bar 120 is driven by the drive mechanism 130, it experiences uneven force along its length. When the scraper bar 120 reaches its second position, one end of the scraper bar 120 may be higher than the other. This makes it difficult for the scraper bar 120 to evenly interfere with the surface to be cleaned, and one end may even fail to make contact with the surface. In addition, even if the driving mechanism 130 is provided with swing arms 133 at the left, middle and right positions in the length direction of the scraper strip 120, that is, the connecting rod 132 is connected to the three swing arms 133, and acts on the left, middle and right points of the scraper strip 120 through the three swing arms 133, the above-mentioned problem still exists in actual product testing. This is because during the transmission process between the connecting rod 132 and the three swing arms 133, due to mechanical reasons, the three swing arms 133 do not move completely synchronously, and the forces received and applied by the three swing arms 133 are not completely consistent.

[0101] To solve the above problem, the cleaning device of the embodiment of the present disclosure is specially provided with a first position retaining member. When the scraper bar is located at the second position, the first position retaining member acts on the scraper bar to keep the scraper bar at the second position.

[0102] The cleaning device of this embodiment uses a drive mechanism 130 to move the scraper bar 120 to a second position where it contacts the surface to be cleaned. The scraper bar 120 then scrapes away dirt from the surface to be cleaned, thereby reducing residual dirt. When the user pulls the cleaning device backward, the scraper bar 120 is in the second position, scraping away dirt from the surface to be cleaned on the front side of the cleaning device. This solves the problem of water stains remaining on the floor when the user pulls the floor scrubber backward to clean the floor in the prior art.

[0103] Furthermore, this embodiment adds a second position retaining member on the basis of the driving mechanism 130 so that the scraping bar 120 can be stably and evenly maintained in the second position, thereby ensuring that the scraping bar 120 can evenly interfere with the surface to be cleaned and improving the cleaning ability of the scraping bar 120.

[0104] In one embodiment, the first position maintaining member includes a magnetic member and a first magnetic engaging member. The magnetic member 140 is disposed on the scraping bar 120, and the first magnetic engaging member 150 is disposed on the covering portion. A first magnetic force interacts between the magnetic member 140 and the first magnetic engaging member 150. When the scraping bar 120 is in the second position, the magnetic member 140 and the first magnetic engaging member 150 are attracted to each other. By adding the magnetic member 140 and the first magnetic engaging member 150, when the scraping bar 120 is driven by the driving mechanism 130 to move toward the second position and is about to reach the second position, it is affected by the first magnetic force, allowing the scraping bar 120 to move to the second position more quickly. Under the attraction of the magnetic member 140 and the first magnetic engaging member 150, the scraping bar 120 can be stably and evenly maintained in the second position, thereby ensuring that the scraping bar 120 and the surface to be cleaned can be evenly interlocked, thereby improving the dirt cleaning ability of the scraping bar 120.

[0105] In one embodiment, the magnetic component 140 may be a component containing a magnetic material, such as a component containing iron, cobalt, nickel, or the like, and the first magnetic matching component 150 may be a component capable of generating a magnetic field, such as a permanent magnet or an electromagnet. In another embodiment, the magnetic component 140 may be a component capable of generating a magnetic field, and the first magnetic matching component 150 may be a component containing a magnetic material or a component capable of generating magnetism.

[0106] In one embodiment, the scraper bar 120 extends along the axis of the cleaning member 220. In the extension direction of the scraper bar 120, a first magnetic force acts on a first point on the scraper bar 120, and a driving mechanism acts on a second point on the scraper bar 120. The first point includes at least one first fulcrum, and the second point includes at least one second fulcrum. The line connecting the at least one first fulcrum and the at least one second point is not perpendicular to the extension direction of the scraper bar 120. This allows the scraper bar 120 to be subjected to forces at multiple points along its length, thereby maintaining the scraper bar 120 in the second position without causing a virtual grounding.

[0107] In one example, the magnetic member 140 and the first magnetic coupling member 150 can be in the shape of a strip having a length substantially equal to or greater than ¾ of the length of the scraper strip 120, and the first magnetic force is applied along the entire length or a majority of the length of the scraper strip 120. In this example, the first point where the first magnetic force acts on the scraper strip 120 is distributed along the entire length or greater than ¾ of the length of the scraper strip 120.

[0108] In one example, there are multiple magnetic parts 140 and multiple first magnetic matching parts 150, and the multiple magnetic parts 140 are spaced apart along the length direction of the scraper strip. The multiple first magnetic matching parts 150 are spaced apart in the covering portion and correspond one to one with the multiple magnetic parts 140. In this way, the multiple first magnetic forces act on the multiple first fulcrums spaced apart in the length direction of the scraper strip. The second fulcrum on which the driving mechanism acts on the scraper strip 120 may be one or more. When the driving mechanism acts on one second fulcrum on the scraper strip 120, the second fulcrum may be located in the middle of the two first fulcrums, and the line connecting the second fulcrum and the first fulcrum is not perpendicular to the extension direction of the scraper strip 120. When the driving mechanism acts on multiple second fulcrums on the scraper strip 120, there is a line connecting the second fulcrum and the first fulcrum that is perpendicular to the extension direction of the scraper strip 120. For example, in the following embodiment, the drive mechanism includes a connecting rod 132 and a swing arm 133. If the connecting rod 132 and the swing arm 133 are respectively provided at the left, center, and right positions in the extension direction of the scraper bar 120, and the magnetic member 140 is respectively provided at the left, center, and right positions in the extension direction of the scraper bar 120, then the first fulcrum and the second fulcrum at the same position of the scraper bar 120 coincide in the vertical direction, that is, the line connecting the first fulcrum and the second fulcrum at the same position is perpendicular to the extension direction of the scraper bar 120. However, the first fulcrum and the second fulcrum at different positions of the scraper bar 120 do not coincide in the vertical direction. For example, the first fulcrum at the left position and the second fulcrum at the center position in the extension direction of the scraper bar 120 do not coincide in the vertical direction, and the line connecting the first fulcrum at the left position and the second fulcrum at the center position is not perpendicular to the extension direction of the scraper bar 120. That is, there are at least such a first fulcrum and a second fulcrum, so that the line connecting the first fulcrum and the second fulcrum is not perpendicular to the extension direction of the scraper 120, so that the scraper 120 is subjected to forces at multiple fulcrums, which is conducive to the scraper 120 being stably maintained in the second position.

[0109] This embodiment ensures that the scraping strip 120 has multiple force points in the length direction by staggering the points where the first magnetic force between the magnetic part 140 and the first magnetic matching part 150 acts on the scraping strip 120 and the points where the driving mechanism acts on the scraping strip 120, so that the scraping strip 120 remains in the second position and is in uniform contact with the surface to be cleaned.

[0110] In one embodiment, the drive mechanism 130 is further configured to drive the scraper bar 120 from the second position to the first position. When the scraper bar 120 moves to the first position, a gap is created between the scraper bar 120 and the surface to be cleaned. The cleaning device further includes a second position maintaining member that, when the scraper bar 120 is in the first position, acts on the scraper bar 120 to maintain the scraper bar 120 in the first position.

[0111] In one embodiment, the second position-maintaining member includes a magnetic member 140 and a second magnetic coupling member 160. The magnetic member is disposed on the scraper bar 120, and the second magnetic coupling member 160 is disposed on the covering portion. A second magnetic force interacts between the magnetic member 140 and the second magnetic coupling member 160. When the scraper bar 120 is in the first position, the magnetic member 140 and the second magnetic coupling member 160 are attracted to each other. The second magnetic force acts on the scraper bar 120, causing it to move toward the first position, thereby stably maintaining the scraper bar 120 in the first position. Furthermore, even if the drive mechanism 130 does not move into position or malfunctions, the scraper bar 120 will not disengage from the first position due to the second magnetic force, thereby reducing the precision requirements of the drive mechanism 130.

[0112] In one embodiment, the movement of the scraper 120 from the second position to the first position can be driven by a second magnetic force between the second magnetic fitting part 160 and the magnetic part 140. For example, the first magnetic fitting part 150 and the second magnetic fitting part 160 are both electromagnets or electromagnetic coils, and the magnetic part 140 is any one of a magnet, an electromagnet or an electromagnetic coil. When the cleaning device is pushed forward by the user, the first magnetic fitting part 150 is powered off and the second magnetic fitting part 160 is powered on. A second magnetic force toward the first position is generated between the second magnetic fitting part 160 and the magnetic part 140. Under the action of the second magnetic force, the scraper 120 moves from the second position to the first position.

[0113] like Figure 1C 、 2A As shown in FIG2B , when the cleaning device is pulled backward by the user to clean the surface to be cleaned, the driving mechanism 130, the magnetic member 140 and the first magnetic matching member 150 act to move the scraper bar 120 from the first position away from the surface to be cleaned to the second position. At this time, the scraper bar 120 can make uniform interference contact with the surface to be cleaned, thereby scraping off the dirt on the surface to be cleaned. Figure 1D 、 2C As shown in 2D, when the cleaning device is pushed forward by the user to clean the surface to be cleaned, the driving mechanism 130, the magnetic part 140 and the second magnetic matching part 160 act to return the scraper 120 from the second position in contact with the surface to be cleaned to the first position. At this time, there is a gap between the scraper 120 and the surface to be cleaned, which avoids pushing the dirt on the front side of the cleaning device forward and affecting the dirt recovery, thereby improving the cleaning efficiency of the dirt in front of the cleaning device.

[0114] The second magnetic coupling member 160 can be a component containing a magnetic material, such as a component containing iron, cobalt, nickel, or the like; or the second magnetic coupling member 160 can be a component capable of generating a magnetic field, such as a permanent magnet or electromagnet. The present disclosure does not limit the form of the second magnetic coupling member 160; any component capable of generating a magnetic force in conjunction with the magnetic member 140 is within the scope of protection of the present disclosure.

[0115] The second position and the first position are arranged vertically relative to each other, meaning that the first position is directly above the second position. The scraper bar 120 is driven by the drive mechanism 130 to move up and down between the first and second positions. Accordingly, the first magnetic coupling member 150 and the second magnetic coupling member 160 are arranged vertically relative to each other, with the magnetic member 140 located between the first and second magnetic coupling members 150 and 160. As such, the second magnetic force acts on the scraper bar 120 at the same point (the first point) as the first magnetic force acts on the scraper bar 120, only in opposite directions. Therefore, the first point at which the second magnetic force acts on the scraper bar 120 is offset from the second point at which the drive mechanism acts on the scraper bar 120. This allows the scraper bar 120 to be subjected to multiple force points along its length as it moves toward the first position, thereby ensuring that the scraper bar 120 remains stably in the first position without becoming suspended in mid-air.

[0116] In one example, the magnetic member 140 and the second magnetic coupling member 160 may be in the shape of a strip having a length substantially equal to or greater than ¾ of the length of the scraper strip 120, and the second magnetic force is applied along the entire length or a majority of the length of the scraper strip 120. In this example, the first point where the second magnetic force acts on the scraper strip 120 is distributed along the entire length or greater than ¾ of the length of the scraper strip 120.

[0117] The first magnetic force between the magnetic member 140 and the first magnetic coupling member 150, and the second magnetic force between the magnetic member 140 and the second magnetic coupling member 160, are both attractive forces. The first magnetic coupling member 150 is vertically located below the second magnetic coupling member 160. Thus, when the drive mechanism 130 drives the scraping bar 120 downward to the second, lower position, the magnetic member 140 gradually moves away from the second magnetic coupling member 160 along with the scraping bar 120, while gradually approaching the first magnetic coupling member 150. The first magnetic force between the first magnetic coupling member 150 and the magnetic member 140 acts downward on the scraping bar 120, keeping the scraping bar 120 in a stable and uniform manner in the second position, where it is in interference contact with the surface to be cleaned.

[0118] In one example, the magnetic member 140 is a magnet, and the first magnetic fitting member 150 and the second magnetic fitting member 160 are both iron sheets. It should be noted that in this example, the first magnetic force acts downward on the scraper 120, and the second magnetic force acts upward on the scraper 120. When the scraper 120 moves downward, although the second magnetic force is opposite to the direction of movement of the scraper 120, since the second magnetic force is much smaller than the downward driving force of the drive mechanism 130, it basically does not affect the downward movement of the scraper 120; moreover, when the scraper 120 moves from the first position to the second position, the scraper 120 gradually moves away from the second magnetic fitting member 160 and gradually approaches the first magnetic fitting member 150. The first magnetic force is greater than the second magnetic force, so that the scraper 120 remains stably in the second position. Similarly, when the scraper 120 moves upward, although the first magnetic force is opposite to the direction of movement of the scraper 120, since the first magnetic force is much smaller than the upward driving force of the drive mechanism 130, it basically does not affect the upward movement of the scraper 120.

[0119] In one example, the magnetic member 140, the first magnetic coupling member 150, and the second magnetic coupling member 160 are all electromagnets or electromagnetic coils. When the drive mechanism 130 drives the scraper 120 to the second position, the magnetic member 140 and the first magnetic coupling member 150 are energized, forming an attractive magnetic force, accelerating the downward movement of the scraper 120 and improving the uniformity and stability of the contact between the scraper 120 and the surface to be cleaned in the second position. When the drive mechanism 130 drives the scraper 120 to the first position, the magnetic member 140 and the second magnetic coupling member 160 are energized, forming an attractive magnetic force, and the first magnetic coupling member 150 can be in a de-energized state, accelerating the scraper 120 to return to the first position.

[0120] In one embodiment, there are at least two magnetic members 140, each of which is spaced apart along the length of the scraper bar 120. Accordingly, there are at least two first magnetic matching members 150, each corresponding to a magnetic member 140. Two of the first magnetic matching members 150 are spaced apart and disposed at the front end of the floor brush cover 110.

[0121] In one example, the two magnetic members 140 are respectively disposed adjacent to both ends of the scraper strip 120 in the length direction. It is worth noting that the two magnetic members 140 can also be disposed at 1 / 3 and 2 / 3 of the length of the scraper strip 120, respectively.

[0122] In this embodiment, multiple magnetic parts 140 distributed at intervals in the length direction of the scraper strip 120 and each first magnetic matching part 150 form multiple first magnetic forces distributed in the length direction of the scraper strip 120 toward the second position. That is to say, the first magnetic force acts on multiple first points of the scraper strip 120, so that the force in the length direction of the scraper strip 120 is more uniform; and the positions at both ends of the length direction of the scraper strip 120 are both subject to the first magnetic force in the direction of the second position, which can completely avoid the problem of the scraper strip 120 tilting due to uneven force at both ends and failing to make uniform contact with the surface to be cleaned, thereby further ensuring that the scraper strip 120 can stably maintain uniform interference contact with the surface to be cleaned.

[0123] In one embodiment, there are at least two second magnetic fittings 160, and the second magnetic fittings 160 correspond one-to-one to each magnetic member 140; the two second magnetic fittings 160 are respectively arranged at intervals at the front end of the floor brush cover 110, and can be respectively arranged adjacent to the two ends in the length direction of the floor brush cover 110. During the process of the scraper 120 being driven by the driving mechanism 130 to move to the first position, the second magnetic force between each magnetic member 140 and each second magnetic fitting 160 acts on multiple positions in the length direction of the scraper 120, so that the force in the length direction of the scraper 120 is more uniform, ensuring that the scraper 120 can stably remain in the first position. In one embodiment, the scraper 120 is defined with a first guide hole 121a corresponding to the magnetic member 140, and the scraper 120 is defined with a mounting groove in the upper area of ​​the first guide hole, and the magnetic member 140 is arranged in the mounting groove. One of the first magnetic matching member 150 and the second magnetic matching member 160 is located in the first guide hole 121 a and below the magnetic member 140 , and the other is located outside the first guide hole 121 a and above the magnetic member 140 .

[0124] In one example, both the upper and lower surfaces of the mounting slot define openings, allowing the magnetic member 140 to be exposed between the first and second magnetic members. In other words, the mounting slot extends downward to the first guide hole 121a and upward through the scraper bar 120, allowing both the upper and lower surfaces of the magnetic member 140 within the mounting slot to be exposed between the first and second magnetic members 150, 160. In this manner, when both the first and second magnetic forces are attractive, the magnetic member 140 can be attracted to and engaged with the first magnetic member 150 when the scraper bar 120 is in the second position; and can be attracted to and engaged with the second magnetic member 160 when the scraper bar 120 is in the first position. In another example, the magnetic member 140 can be encapsulated and not exposed, allowing it to indirectly contact and engage with the second magnetic member 160 or the first magnetic member 150 when the scraper bar 120 is in either the first or second position.

[0125] In one example, the first magnetic force generated between the magnetic member 140 and the first magnetic coupling member 150 is an attractive force, and the second magnetic force generated between the magnetic member 140 and the second magnetic coupling member 150 is an attractive force. The first magnetic coupling member 150 is located within the first guide hole 121a and below the magnetic member 140, and the second magnetic coupling member 160 is located outside the first guide hole 121a and above the magnetic member 140. When the scraper bar 120 is driven by the driving mechanism 130 to descend from the first position to the second position, the magnetic member 140 gradually moves downward toward the first magnetic coupling member 150 as the scraper bar 120 descends. When the scraper bar 120 reaches the second position, the magnetic member 140 and the first magnetic coupling member 150 are attracted and abutted. Correspondingly, when the scraper 120 is driven by the driving mechanism 130 to rise from the second position to the first position, the magnetic part 140 gradually moves upward and approaches the second magnetic matching part 160 as the scraper 120 rises. When the scraper 120 reaches the first position, the magnetic part 140 is adsorbed and abutted against the second magnetic matching part 160.

[0126] In one example, a mounting portion 111 is formed on the front side of the floor brush cover 110, protruding forward and corresponding to the first guide hole 121a. The mounting portion 111 defines a first mounting protrusion 111a and a second mounting protrusion 111b that are vertically opposed. A guide channel 111c is defined between the first mounting protrusion 111a and the second mounting protrusion 111b. The second mounting protrusion 111b is inserted into the first guide hole 121a and slidably engages with the first guide hole 121a to guide the scraper 120 to move along the guide channel 111c between the second position and the first position. One of the first magnetic engagement member 150 and the second magnetic engagement member 160 is disposed on the first mounting protrusion 111a, and the other is disposed on the second mounting protrusion 111b.

[0127] In this example, a first mounting protrusion 111a and a second mounting protrusion 111b are formed on the floor brush cover 110 to provide a guide channel 111c for the movement of the scraper bar 120 between the first position and the second position, thereby limiting the displacement of the scraper bar 120 in the longitudinal direction and improving the stability of the scraper bar 120 in the vertical direction. In addition, the first mounting protrusion 111a and the second mounting protrusion 111b provide a supporting platform for the first magnetic fitting member 150 and the second magnetic fitting member 160, respectively. The scraper bar 120 defines a mounting groove for supporting the magnetic member 140 in the upper area of ​​the first guide hole 121a. This cleverly achieves the position requirements of the magnetic member 140, the first magnetic fitting member 150, and the second magnetic fitting member 160. Moreover, the structure is compact, the space occupied is small, and the overall size of the floor brush 200 is basically unaffected.

[0128] In one example, the second mounting protrusion 111b is located below the first mounting protrusion 111a, the first magnetic fitting member 150 is disposed on the second mounting protrusion 111b, the second magnetic fitting member 160 is disposed on the first mounting protrusion 111a, and the first guide hole 121a extends to an area adjacent to the upper end of the scraper strip 120.

[0129] In one example, there may be multiple first guide holes 121a, each first guide hole 121a corresponds to each magnetic member 140 one by one, and two of the first guide holes 121a may be respectively arranged adjacent to the two ends of the scraper strip 120 in its length direction, so that the magnetic force acting on the scraper strip 120 is dispersed at the two ends in the length direction of the scraper strip 120, avoiding the problem of one end of the scraper strip 120 being higher than the other end.

[0130] In the above embodiment, the first guide hole 121a provides space for the relative displacement of the first magnetic coupling member 150 during the lifting and lowering of the scraper bar 120, and the provision of the first guide hole 121a can save space in the front-to-back direction. In other embodiments, the first guide hole 121a can also be omitted. For example, when the magnetic member 140 and the magnetic coupling member 150 are offset in the front-to-back direction, the magnetic coupling member 150 can move relative to the scraper bar 120 behind the magnetic member 140, but this method requires space in the front-to-back direction. In one embodiment, the scraper 120 is formed with at least one second guide hole 121b, and the front side of the floor brush cover 110 is also formed with at least one guide portion 112 protruding forward, at least one guide portion 112 corresponds one-to-one to at least one second guide hole 121b, and the guide portion 112 is inserted into the corresponding second guide hole 121b and slides with the corresponding second guide hole 121b to guide the scraper 120 to move between the second position and the first position, thereby limiting the displacement of the scraper 120 in the length direction, so that the lifting and lowering of the scraper 120 is more controllable and stable.

[0131] In one example, the second guide hole 121b is positioned in the scraper bar 120 further away from the longitudinal end of the scraper bar 120 than the first guide hole 121a. That is, in an example where the scraper bar 120 is formed with at least one first guide hole 121a and at least one second guide hole 121b, the first guide hole 121a is formed adjacent to the longitudinal end of the scraper bar 120, while the second guide hole 121b is formed further away from the longitudinal end of the scraper bar 120. This example defines the first guide hole 121a and the second guide hole 121b at specific locations on the scraper bar 120 to guide the scraper bar 120 between the first and second positions, thereby smoothing the movement of the scraper bar 120 and further evenly distributing the force applied to the scraper bar 120 along its longitudinal direction, thereby reducing localized excessive stress on the scraper bar 120.

[0132] Reference Figures 2F to 2JIn one embodiment, the cleaning device further comprises a guide bracket 180. A receiving groove 121d corresponding to the guide bracket 180 is formed on the rear side of the scraper bar 120. The guide bracket 180 is disposed within the receiving groove 121d. A guide slide 181 is defined on the rear side of the guide bracket 180. The covering portion comprises a floor brush cover 110. The scraper bar 120 is located on the front side of the floor brush cover 110. A forwardly protruding guide rib 115 is formed on the front side of the floor brush cover 110. The guide rib 115 slidably engages with the guide slide 181 to guide the scraper bar 120 to move between the second position and the first position.

[0133] Specifically, a space 121e is defined between the guide bracket 180 on both sides of the scraper strip 120 in the direction of extension and the receiving slot 121d on both sides of the scraper strip 120 in the direction of extension. This means that a left gap is formed between the left side of the guide bracket 180 and the left side of the guide slot, and a right gap is formed between the right side of the guide bracket 180 and the right side of the receiving slot 121d. This allows the guide bracket 180 to move in the left and right directions of the receiving slot 121d. The guide rib 115 extends a long distance in the height direction. Due to manufacturing errors, the guide rib 115 cannot be completely vertical. During the lifting and lowering of the scraper strip 120 between the first and second positions, when the guide rib 115 slides up and down within the guide slide 181 of the guide bracket 180, the left and right gaps between the guide bracket 180 and the receiving slot 121d allow the guide bracket 180 to move adaptively left and right within the receiving slot 121d.

[0134] The front side of the guide bracket 180 may abut against the receiving groove 121d, or the guide bracket 180 and the receiving groove 121d may form interference contact in the front-to-back direction, ensuring that the guide bracket 180 does not wobble within the receiving groove 121d, thereby ensuring accurate guidance. The front cover 230 covers the outside of the floor brush cover 110 and limits the guide bracket 180, which is installed in the receiving groove 121d of the scraper bar 120, and the guide rib 115 of the floor brush cover 110 in the front-to-back direction, preventing the guide rib 115 from separating from the guide bracket 180.

[0135] In one embodiment, the guide rib 115 may be T-shaped to increase the strength of the guide rib 115 .

[0136] In one embodiment, the rear side of the guide bracket 180 may be formed with two rows of protrusions 182 spaced apart along the length of the scraper strip 120. Each row of protrusions 182 includes a plurality of protrusions 182 spaced apart in the vertical direction. The two rows of protrusions 182 define a guide track 181. The protrusions 182 may be V-shaped, with the V-shaped tips of two protrusions 182 facing each other along the length facing each other, resulting in a point-line fit between the guide rib 115 and the guide bracket 180, thereby reducing friction.

[0137] In one embodiment, the drive mechanism 130 includes a drive assembly 131 disposed on the floor brush body 210 or the floor brush cover 110, and a transmission member disposed on the floor brush cover 110. The transmission member is in transmission connection with the drive assembly 131 and is connected to the scraper bar 120. The drive assembly 131 is configured to rotate the transmission member so that the transmission member drives the scraper bar 120 to move between the second position and the first position. The drive mechanism 130 of this embodiment transmits the driving force of the drive assembly 131 to the scraper bar 120 via the transmission member, driving the movement of the scraper bar 120, resulting in a simple design and a smaller footprint.

[0138] The drive assembly 131 includes a drive member, which may be a servo or motor. The drive assembly 131 operates in response to a control signal. For example, when the sensor senses the cleaning device's forward or backward movement, the drive assembly 131 drives the transmission member to move, driving the scraper bar 120 toward the second position to contact the surface to be cleaned and scrape dirt. When the sensor does not sense the cleaning device's backward movement, such as when the cleaning device is moving forward or stopped, the drive assembly 131 drives the scraper bar 120 toward the first position via the transmission member, moving it away from the surface to be cleaned and maintaining a certain distance from the surface to be cleaned.

[0139] Figure 3A A schematic structural diagram of a transmission member and a coupling 134 of a cleaning device according to an embodiment of the present disclosure is shown. Figure 3B Another structural schematic diagram of the transmission member and coupling 134 of the cleaning device according to an embodiment of the present disclosure is shown. Figure 3C A schematic diagram from another perspective showing another structure of the transmission member and the coupling 134 of the cleaning device according to an embodiment of the present disclosure.

[0140] Reference Figure 1A 、 Figures 3A to 3C In one embodiment, the transmission member includes a connecting rod 132 and a swing arm 133. The first end 132a of the connecting rod 132 is in transmission connection with the drive assembly 131 and rotates under the drive of the drive assembly 131. The first end 133b of the swing arm 133 is connected to the second end 132b of the connecting rod 132. The second end of the swing arm 133 is connected to the scraper bar 120 and is configured to swing with the rotation of the connecting rod 132 to drive the scraper bar 120 between the second position and the first position. This embodiment uses the connecting rod 132 and the swing arm 133 as the transmission member to achieve the lifting movement of the scraper bar 120, resulting in a simple structure and low cost. In addition, the drive assembly 131 drives the connecting rod 132 and the swing arm 133 to rotate and move the scraper bar 120 up and down, reducing the space occupied by the drive mechanism 130 in the vertical direction and making the drive mechanism 130 more compact.

[0141] The upper side of the scraper bar 120 is formed with a mating hole 121c extending along its length. The second end of the swing arm 133 defines a connecting shaft 133a extending forward and backward, which slidably engages with the mating hole 121c. The mating hole 121c and the connecting shaft 133a of the swing arm 133 cooperate to constrain the motion trajectory of the swing arm 133, converting the rotation of the connecting rod into the swing of the swing arm 133, thereby raising and lowering the hanging bar between the first and second positions. Furthermore, the mating hole 121c provides guidance for the swing arm 133, ensuring its stability and accuracy during movement. This reduces deviation and swing of the swing arm 133 during movement, thereby improving accuracy and reliability. In addition, compared with other driving mechanisms, the driving assembly 131 in this patent drives the connecting rod 132 to rotate, driving the swing arm 133 to swing, thereby driving the scraper 120 to rise and fall between the second position and the first position. The transmission parts, namely the connecting rod 132 and the swing arm 133, do not need to be displaced in the front and rear directions or left and right directions of the floor brush 200. The floor brush 200 does not need to provide additional displacement space for the transmission parts, which is conducive to the miniaturization of the floor brush 200 and facilitates the floor brush 200 to enter a small space for cleaning.

[0142] like Figure 2A and 2B As shown, the driving assembly 131 drives the connecting rod 132 to rotate clockwise, and the swing arm 133 swings along with the rotation of the connecting rod 132. The connecting shaft 133a of the swing arm 133 slides to the left along the matching hole 121c, so that the scraper 120 drops down to the second position and contacts the surface to be cleaned. Figure 2C and 2D As shown, the driving assembly 131 drives the connecting rod 132 to rotate counterclockwise, and the swing arm 133 swings as the connecting rod 132 rotates. The connecting shaft 133a of the swing arm 133 slides to the right along the matching hole 121c, so that the scraper 120 rises to the first position and is separated from the surface to be cleaned by a certain distance.

[0143] In one embodiment, the mating hole 121c is located in the middle of the scraping bar 120 in the length direction of the scraping bar 120, and the transmission member is located in the middle of the floor brush cover 110 in the length direction of the floor brush cover 110. Specifically, the mating hole 121c is centered in the length direction of the scraping bar 120, and the transmission member is centered in the length direction of the floor brush cover 110. The driving force of the transmission member acts on the approximate middle position in the length direction of the scraping bar 120, which is beneficial to the balance of the left and right areas in the length direction of the scraping bar 120 and reduces the possibility of tilting of the scraping bar 120 during the lifting and lowering process. Of course, in the conventional cognition of those skilled in the art, due to the mutual cooperation of the mechanical structures and the existence of left and right sliding space of the mating hole 121c, the center position of the mating hole 121c and the transmission member can be a position slightly deviated from the exact center, and the deviation can be the length of the mating hole 121c.

[0144] In one example, magnetic parts 140 are respectively provided at both ends of the scraper strip in the length direction. The magnetic forces between the magnetic part 140 and the corresponding first magnetic matching parts 150 and second magnetic matching parts 160 act on the two ends of the scraper strip in the length direction respectively. The driving force of the transmission part acts on the middle part of the scraper strip in the length direction, so that the scraper strip is uniformly stressed at intervals in the length direction, further improving the stability of the scraper strip during movement, thereby further ensuring the uniform interference contact between the scraper strip in the second position and the surface to be cleaned. Specifically, because magnetic members 140 are provided on both sides of the mating hole 121c, the magnetic force of the magnetic member 140 on the left side of the mating hole 121c and the first and second magnetic members 150 and 160 on the left side exerts a first torque on the scraper bar 120, while the magnetic force of the magnetic member 140 on the right side of the mating hole 121c and the first and second magnetic members 150 and 160 on the right side exerts a second torque on the scraper bar 120. To ensure uniform force, the mating hole 121c is positioned on the scraper bar 120 at the equilibrium point of the two torques, so that the first and second torques are equal. When the magnetic forces on both sides of the mating hole 121c are equal, the mating hole 121c is located midway between the magnetic member 140 on the left and the magnetic member 140 on the right.

[0145] In one embodiment, the driving assembly 131 further includes a coupling 134, and the first end 132a of the connecting rod 132 is connected to the driving member through the coupling. The end of the coupling 134 is formed with a connecting port 134a, and the first end 132a of the connecting rod 132 is adapted to the connecting port 134a and is clamped to the connecting port 134a. In one example, Figure 3A As shown, the connecting port 134 a is in an I-shape, which provides an axial fixing function for the connecting rod 132 , prevents the connecting rod 132 from axial displacement during rotation, and facilitates assembly and disassembly of the connecting rod 132 and the coupling 134 .

[0146] When the connection port 134a is in the shape of a straight line, the first end 132a of the connecting rod 132 needs to be inserted into the connection port 134a to complete the docking. The connection port 134a needs to be at a specific angle, otherwise the first end 132a will interfere with the wall of the connection port 134a. Figure 3B 、 Figure 3C As shown, the connecting port 134a is in a "cross" shape. When the coupling 134 is docked with the connecting rod 132, the "cross"-shaped connecting port 134a can dock with the connecting rod 132 at any angle, which has low requirements on the installation accuracy of the connecting rod 132, and also reduces the control accuracy and performance requirements of the driving component, making it easy for the connecting rod 132 and the coupling 134 to dock smoothly.

[0147] The floor brush cover body 110 forms a limiting portion 114, and the limiting portion 114 forms a first limiting groove 114a. A fixing member 170 is installed on the upper part of the floor brush cover body 110, and the fixing member 170 forms a second limiting groove 170a that cooperates with the first limiting groove 114a. The first limiting groove 114a and the second limiting groove 170a cooperate and dock with each other and define a limiting hole at the second end of the supporting swing arm 133 to limit the swing arm 133 in the radial direction.

[0148] In one embodiment, when the scraper 120 is in the first position, the distance between the lower end of the scraper 120 and the surface to be cleaned is greater than a preset distance, which is the distance between the outer wall of the cleaning member 220 and the inner wall of the suction port 212a of the cleaning device, so as to avoid the scraper blocking the dirt on the front side of the cleaning member 220 and affecting the suction effect.

[0149] In one embodiment, the preset distance is the maximum distance between the outer wall of the cleaning member 220 and the inner wall of the suction port 212a of the cleaning device. Taking a roller brush as an example, as the cleaning member 220 is in contact with the surface to be cleaned, the outer wall of the cleaning member 220 wears away, increasing the distance between the cleaning member 220 and the suction port 212a of the cleaning device. When the cleaning member 220 is worn to its maximum extent, the distance between the outer wall of the cleaning member 220 and the inner wall of the suction port 212a reaches its maximum distance, which represents the maximum size of dirt that can be sucked by the cleaning device. Therefore, the height of the scraper bar 120 is greater than this maximum distance to prevent the scraper bar 120 from blocking dirt in front of the cleaning member 220, thereby ensuring the maximum suction capacity of the cleaning device.

[0150] like Figure 1B As shown, a dirt suction port 212a is defined between the rear side of the cleaning member 220 and the scraper 260 on the rear side of the cleaning member 220. The preset distance can be the distance between two parallel lines a and b when the diameter of the cleaning member 220 is at its minimum, wherein line a is a line passing through the point closest to the scraper 260 on the rear side of the cleaning member 220 and the center of the cleaning member 220 and perpendicular to the radial direction of the cleaning member 220, and line b is a line parallel to line a and tangent to the outer peripheral wall of the cleaning member 220 when the diameter is at its minimum.

[0151] In one embodiment, when the scraper bar 120 is located at the second position, the interference between the scraper bar 120 and the surface to be cleaned is greater than the interference between the scraper plate 260 of the cleaning device located behind the cleaning member 220 and the surface to be cleaned.

[0152] Those skilled in the art will understand that, taking the roller brush as the cleaning member 220 as an example, the interference fit between the cleaning member 220 and the surface to be cleaned refers to the depth or amount of contact between the cleaning member 220 and the surface to be cleaned during operation. An appropriate interference fit can ensure that the cleaning member 220 effectively contacts the surface to be cleaned, thereby better removing dust, debris, and dirt. If the interference fit is too small, the cleaning member 220 may not be able to fully contact the surface to be cleaned, resulting in poor cleaning effect. On the contrary, if the interference fit is too large, the cleaning member 220 may damage the surface to be cleaned and increase the resistance and wear of the cleaning device.

[0153] As the contact time between the cleaning member 220 and the surface to be cleaned increases, the outer wall of the cleaning member 220 is worn, the diameter of the cleaning member 220 becomes smaller, the cleaning member 220 will drop, and the interference between the rear scraper bar of the cleaning device (i.e., the aforementioned scraper 260) and the surface to be cleaned will decrease. When the cleaning member 220 is about to fail, the scraper 260 may just contact the surface to be cleaned. Therefore, when the scraper bar 120 is in the second position, the interference between the scraper bar 120 and the surface to be cleaned must be at least greater than the interference between the scraper 260 and the surface to be cleaned. In this way, when the cleaning member 220 is worn to the maximum and is about to fail, the scraper bar 120 can still contact the surface to be cleaned and scrape the dirt on the surface to be cleaned.

[0154] In one embodiment, reference Figure 1B The scraping bar 120 extends forward and tilted from top to bottom. That is, the angle a between the portion of the scraping bar 120 that contacts the surface to be cleaned and the surface to be cleaned is less than or equal to 90°. For edge areas such as walls and furniture, taking a roller brush as the cleaning member 220 as an example, the outer peripheral wall of the cleaning member 220 is circular and cannot fit closely with the edge area, resulting in the cleaning member 220 being unable to clean dirt in the edge area. In this embodiment, the scraping bar 120 extends forward and tilted as a whole from top to bottom. When the cleaning device is pushed by the user to an edge area such as a wall or furniture, the drive mechanism 130 maintains the scraping bar 120 in the first position. When the user pulls the cleaning device backward, the drive mechanism 130 drives the scraping bar 120 to descend to the second position. The forward-extending portion of the scraping bar 120 can precisely contact the surface to be cleaned in the edge area, scraping off dirt in the edge area, thereby greatly improving the cleaning effect on edge areas such as walls and furniture.

[0155] In one embodiment, reference Figure 1A and Figure 1BThe scraper bar 120 includes a hard portion 121 and a flexible cleaning portion 122. The hard portion 121 is connected to the drive mechanism 130, and the magnetic member 140 is disposed on the hard portion 121. The flexible cleaning portion 122 is connected to the underside of the hard portion 121 and is configured to contact the surface to be cleaned when the scraper bar 120 is in the second position. The scraper bar 120 is connected to the drive mechanism 130 via the hard portion 121, allowing the scraper bar 120 to move quickly under the driving force of the drive mechanism 130, and further ensuring more stable coordination between the scraper bar 120 and various components, such as the drive mechanism 130, the magnetic member 140, and the first magnetic coupling member 150. The flexible cleaning portion 122 of the scraper bar 120 is easily deformed under the action of external forces. When in contact with the surface to be cleaned, it can maintain a certain interference fit, effectively scraping dirt from the surface to be cleaned and reducing friction on the surface to be cleaned.

[0156] The first guide hole 121a and the second guide hole 121b can be formed in the hard portion 121 of the scraper strip 120, respectively, to maintain the stability of the guide holes and the second guide holes 121b in guiding the movement of the scraper strip 120. The magnetic member 140 is installed in the hard portion 121, which is conducive to the stability of the installation of the magnetic member 140.

[0157] In one embodiment, a movable space for the scraping bar 120 to move between the second position and the first position is defined between the inner surface of the front cover 230 and the outer surface of the floor brush cover 110. By defining the movable space for the scraping bar 120 between the front cover 230 and the floor brush cover 110, there is no need to provide an additional channel for the scraping bar 120 to move, which reduces space usage and makes the overall structure of the floor brush more compact.

[0158] In one embodiment, the outer surface of the front cover 230 extends forward in an inclined direction from top to bottom, so that the cleaning member 220 and the scraper 120 below the front cover 230 can be as close to the front as possible, especially without hindering the scraper 120 from being close to the wall.

[0159] See also Figure 1E A is a vertical plane passing through the axis of the cleaning member 220. The cleaning member 220 contacts the ground at its lowest point at A. B is a vertical plane tangent to the rear edge of the cleaning member 220. In one embodiment, with A as the boundary, the height of the floor brush 200 in front of A is less than the height of the floor brush 200 behind A. In other words, the height of the floor brush 200 in front of the axis of the cleaning member 220 is less than the height of the floor brush 200 behind the axis of the cleaning member 220. For example, if the height of the floor brush 200 in front of A is within 70 mm, the front side of the floor brush 200 can easily reach low spaces for cleaning, thus resolving the problem of the existing floor brush 200 being too tall to clean low spaces.

[0160] In one embodiment, with B as the boundary, the height of the floor brush 200 on the front side of B is less than the height of the floor brush 200 on the rear side of B, that is, the height of the floor brush 200 on the front side of B is less than the height of the floor brush 200 on the rear side of B, so that the cleaning member 220 can fully enter the low space for cleaning.

[0161] In one embodiment, since a cover portion is typically provided above the cleaning member 220, and the cover portion is detachably mounted on the floor brush body 210 or the floor brush cover 240, in order to allow the cleaning member 220 to enter low spaces for cleaning, the height of the floor brush 200 at the cover portion is set to be smaller than the height of the floor brush 200 behind the cover portion. In another example, the clean water tank can be provided above the floor brush 200, and the height of the floor brush 200 corresponding to the cover portion can be set to be smaller than the height of the floor brush 200 behind the cover portion. When the clean water tank is provided above the floor brush 200, the clean water tank can have a greater depth at the corresponding cover portion, which is conducive to increasing the volume of the clean water tank.

[0162] In one embodiment, both ends of the floor brush cover 110 in the length direction are respectively formed with closing portions extending toward the activity space, and the two closing portions respectively close both ends of the activity space in the length direction to prevent dirt from entering and affecting the movement of the scraper 120, and to maintain the beautiful appearance of the floor brush.

[0163] In one embodiment, reference Figure 2E The front end of the floor brush cover 110 is also provided with a flexible sealing strip 113 extending along the length of the floor brush cover 110. When the scraper bar 120 is in the first position, the flexible sealing strip 113 abuts the rear surface of the flexible cleaning portion 122, and the front area of ​​the upper end surface of the flexible cleaning portion 122 abuts the lower end surface of the front cover 230. When the cleaning device is pushed forward by the user to clean the surface to be cleaned, the scraper bar 120 is driven upward by the drive mechanism 130 to the first position. If there is a gap between the scraper bar 120 and the bottom end of the active space, dirt will enter the active channel through the gap, interfering with the subsequent movement of the scraper bar 120. Therefore, this embodiment utilizes the cooperation between the scraper bar 120 moved to the first position and the flexible sealing strip 113 to seal the open portion at the lower end of the active space, preventing dirt from entering the active space and maintaining smooth movement of the scraper bar 120. In another embodiment, the flexible sealing strip 113 can abut against the rear surface of the flexible cleaning portion 122 when the scraper strip 120 is in the first position and the second position, so that the scraper strip 120 always remains sealed with the floor brush cover body 110 during the lifting movement, preventing dirt from entering the space between the scraper strip 120 and the floor brush cover head 110.

[0164] Reference Figure 1A and Figure 1BThe floor brush 200 provided in this embodiment may also include an upper cover 240, which covers the upper side of the floor brush body 210, and the cleaning member 220 is installed at the front end of the floor brush body 210. The floor brush cover 110 covers the upper side of the cleaning member 220 and is installed at the front end of the upper cover 240. The front cover 230 is covered on the outside of the floor brush cover 110, thus forming the overall structure of the floor brush 200.

[0165] The floor brush body 210 defines a accommodating space 211, and a drive mounting portion 250 is provided in the accommodating space 211. The drive assembly 131 in the drive mechanism 130 can be installed on the drive mounting portion 250. The first end 132a of the connecting rod of the transmission member of the drive mechanism 130 can pass through the rear end face of the floor brush cover body 110 and the front end face of the upper cover body 240 in sequence and be connected to the coupling 134. The coupling 134 is connected to the output shaft of the drive assembly 131.

[0166] According to an embodiment of another aspect of the present disclosure, a cleaning device is also provided. In an embodiment of the present disclosure, the cleaning device includes a floor brush 200, and the floor brush 200 includes a floor brush body 210, a covering portion, a cleaning member 220, and a scraper bar 120. The covering portion is mounted on the front side of the floor brush body 210, and the covering portion and the floor brush body 210 define an accommodating cavity located on the front side of the floor brush body 210. In one embodiment, the covering portion includes a floor brush cover 110 and a front cover 230, and the floor brush cover 110 and the floor brush body 210 define an accommodating cavity located on the front side of the floor brush body 210, and the front cover 230 is covered on the outside of the floor brush cover 110.

[0167] The cleaning member 220 is arranged in the accommodating cavity and is used to contact the surface to be cleaned so as to clean the surface to be cleaned. The scraping bar 120 is arranged in the covering portion and is located on the front side of the cleaning member 220. In one embodiment, the scraping bar 120 can be arranged on the front cover 230. For example, the scraping bar 120 is arranged on the front side or the rear side of the front cover 230. In another embodiment, the scraping bar 120 can be arranged on the front side of the floor brush cover 110. The scraping bar 120 in the second position is used to scrape off the dirt on the surface to be cleaned that is located in front of the cleaning member 220. The dirt cleaned by the cleaning member 220 and the dirt scraped by the scraping bar 120 enter the sewage suction channel 212 through the sewage suction port 212a of the floor brush 200 and are transported downstream by the sewage suction channel 212.

[0168] The cleaning device also includes a driving mechanism 130, which is in transmission cooperation with the scraper 120 and is used to drive the scraper 120 to move from a first position to a second position. When the scraper 120 is in the first position, there is a gap between it and the surface to be cleaned. When the scraper 120 moves to the second position, it contacts the surface to be cleaned, thereby scraping off the dirt on the surface to be cleaned on the front side of the cleaning member 220 and reducing the dirt remaining on the surface to be cleaned.

[0169] The scraper bar 120 extends in the axial direction of the cleaning member 220, and the extended length of the scraper bar 120 is no less than the axial length of the cleaning member 220. Actual product testing revealed that the transmission connection between the drive mechanism 130 and the scraper bar 120 is not distributed along the entire length of the scraper bar 120. As the scraper bar 120 is driven by the drive mechanism 130, it experiences uneven force along its length. When the scraper bar 120 reaches its second position, one end of the scraper bar 120 may be higher than the other. This makes it difficult for the scraper bar 120 to evenly interfere with the surface to be cleaned, and one end may even fail to make contact with the surface.

[0170] In order to solve the above problems, the cleaning device of the embodiment of the present disclosure is specially equipped with a magnetic part 140 and a first magnetic matching part 150. The magnetic part 140 is arranged on the scraper 120, and the first magnetic matching part 150 is arranged on the covering part. There is a first magnetic force that interacts with each other between the magnetic part 140 and the first magnetic matching part 150. The first magnetic force acts on the scraper 120 so that the scraper 120 has a tendency to move toward the second position.

[0171] The cleaning device of this embodiment uses a drive mechanism 130 to move the scraper bar 120 to a second position where it contacts the surface to be cleaned. The scraper bar 120 then scrapes away dirt from the surface to be cleaned, thereby reducing residual dirt. When the user pulls the cleaning device backward, the scraper bar 120 is in the second position, scraping away dirt from the surface to be cleaned on the front side of the cleaning device. This solves the problem of water stains remaining on the floor when the user pulls the floor scrubber backward to clean the floor in the prior art.

[0172] In addition, this embodiment adds a magnetic part 140 and a first magnetic matching part 150 on the basis of the driving mechanism 130, so that when the scraper 120 is driven by the driving mechanism 130 to move to the second position and is about to reach the second position, it is affected by the first magnetic force, prompting the scraper 120 to move to the second position faster, and the scraper 120 can be stably and evenly maintained in the second position, thereby ensuring that the scraper 120 can evenly interfere with the surface to be cleaned, thereby improving the cleaning ability of the scraper 120.

[0173] In one embodiment, the drive mechanism 130 is further configured to drive the scraper 120 from the second position to the first position, with a gap between the scraper 120 and the surface to be cleaned when the scraper 120 moves to the first position. The covering portion is further provided with a second magnetic member 160. A second magnetic force interacts between the magnetic member 140 and the second magnetic member 160. This second magnetic force acts on the scraper 120, causing the scraper 120 to tend to move toward the first position, thereby stably maintaining the scraper 120 in the first position. Furthermore, even if the drive mechanism 130 fails to move into position or malfunctions, the scraper 120 will not disengage from the first position due to the second magnetic force, thereby reducing the precision requirements of the drive mechanism 130.

[0174] In one embodiment, the first magnetic force between the magnetic member 140 and the first magnetic coupling member 150, and the second magnetic force between the magnetic member 140 and the second magnetic coupling member 160, are both repulsive forces. The first magnetic coupling member 150 is vertically located above the second magnetic coupling member 160. For example, the magnetic member 140, the first magnetic coupling member 150, and the second magnetic coupling member 160 are all electromagnets or electromagnetic coils. When the drive mechanism 130 drives the scraper 120 downward to the second position, the second magnetic coupling member 160 is de-energized, while the first magnetic coupling member 150 and the magnetic member 140 are energized, generating repulsive downward magnetic forces, causing the scraper 120 to descend more quickly to the second position and remain stably there. When the driving mechanism 130 drives the scraper 120 to rise to the first position located above, the first magnetic matching component 150 is not energized and no magnetic force is generated between it and the magnetic component 140. The second magnetic matching component 160 and the magnetic component 140 are both energized, and the two generate repulsive magnetic forces, so that the scraper 120 rises to the first position faster and stays stably in the first position.

[0175] The cleaning device of this embodiment uses a drive mechanism 130 to move the scraper bar 120 to a second position where it contacts the surface to be cleaned. The scraper bar 120 then scrapes away dirt from the surface to be cleaned, thereby reducing residual dirt. When the user pulls the cleaning device backward, the scraper bar 120 removes dirt from the surface to be cleaned on the front side of the cleaning device, resolving the problem of water stains remaining on the floor when the user pulls the floor scrubber backward to clean it, as is common in the prior art.

[0176] Furthermore, the cleaning device of this embodiment adds a magnetic member 140 and a first magnetic coupling member 150 to the drive mechanism 130. This allows the scraper bar 120, while being driven by the drive mechanism 130 to move toward the second position, to be acted upon by the first magnetic force, prompting the scraper bar 120 to move to the second position more quickly. The attraction between the magnetic member 140 and the first magnetic coupling member 150 allows the scraper bar 120 to remain stably and evenly in the second position, thereby ensuring a uniform interference fit between the scraper bar 120 and the surface to be cleaned and improving the cleaning capability of the scraper bar 120. Furthermore, the drive assembly 131 only requires a slightly higher power output when the scraper bar 120 leaves the first or second position to overcome the magnetic force. Once the scraper bar 120 is in motion after leaving the first or second position, the drive assembly 131 can stop outputting power or maintain a minimal power output due to the inertia of the scraper bar 120 itself. This saves battery life and helps extend the service life of the drive assembly 131.

[0177] Figure 4 A flow chart showing a method for controlling a cleaning device according to an embodiment of the present disclosure is shown. Figure 5 An example graph illustrating a push-pull test experiment of a cleaning device according to an embodiment of the present disclosure.

[0178] The present disclosure also provides a method for controlling a cleaning device, wherein the cleaning device includes a cleaning member 220 for contacting a surface to be cleaned, a scraping bar 120 located in front of the cleaning member 220, and a drive mechanism. The drive mechanism is in transmission cooperation with the scraping bar 120 to drive the scraping bar 120 to move between a first position and a second position. When the scraping bar 120 is in the first position, there is a gap between the scraping bar 120 and the surface to be cleaned. When the scraping bar 120 moves to the second position, the scraping bar 120 contacts the surface to be cleaned.

[0179] See also Figure 4 The control method of the cleaning device of this embodiment includes: obtaining the working state of the cleaning device, the working state including the motion state; in response to the working state satisfying the first preset condition, controlling the driving mechanism to perform the first preset action when the scraper 120 is in the first position, so that the driving mechanism drives the scraper 120 to move from the first position to the second position.

[0180] Refer to the description of the scraper bar 120 in the first or second position in any of the aforementioned embodiments of the cleaning device. When the cleaning device is pulled back, the scraper bar 120 is in the second position, where it contacts the surface to be cleaned, scraping away dirt and reducing residual dirt. When the cleaning device is pushed forward, the scraper bar 120 is in the first position, where a gap exists between the scraper bar 120 and the surface to be cleaned. This prevents dirt on the front side of the cleaning device from being pushed forward and affecting dirt recovery, thereby improving the cleaning efficiency of dirt in the front of the cleaning device.

[0181] If the cleaning device controls the drive mechanism to drive the scraper 120 to the second position after detecting backward movement, that is, within a certain distance after the cleaning device starts to pull back, the scraper 120 does not actually drop to the second position. During this distance, because the scraper 120 does not contact the surface to be cleaned, the water stains on the surface to be cleaned cannot be removed. Therefore, the control method of the embodiment of the present disclosure obtains the working status of the cleaning device, controls the drive mechanism according to the different working conditions of the cleaning device, and predicts the pulling back of the cleaning device in advance, thereby controlling the drive mechanism in advance and causing the scraper 120 to move to the second position in advance. In this way, when the cleaning device is actually pulled back, the scraper 120 can move to the second position in contact with the surface to be cleaned, and the water stains on the surface to be cleaned can be truly scraped off within the entire distance of the pull back.

[0182] It is understood that a running wheel 270 is generally mounted on the rear side of the floor brush body 210 of the cleaning device, and the running wheel 270 and the cleaning member 220 are spaced apart in the moving direction of the floor brush body 210. In the embodiment of the present disclosure, the direction from the running wheel 270 toward the cleaning member 220 is considered the front, and the direction from the cleaning member 220 toward the running wheel 270 is considered the rear. When operating the cleaning device, the user can push the cleaning device forward or pull the cleaning device backward, which will be described in detail below in this disclosure.

[0183] In this embodiment, the motion state may include motion speed or motion acceleration or motion speed and motion acceleration, and the working state may include motion state, posture state and power-on state, etc. For example, the cleaning device identifies the motion speed and motion acceleration of the cleaning device through a code disc assembly installed on the walking wheel 270 of the cleaning device. Of course, the cleaning device can also identify the motion speed and motion acceleration through a gyroscope, accelerometer, Hall sensor or displacement sensor. It can be understood that under normal working conditions, the motion speed and motion acceleration of the walking wheel 270 are the motion speed and motion acceleration of the cleaning device.

[0184] It can be understood that both the motion speed and the motion acceleration are vectors, that is, the motion speed includes the direction of the motion speed and the value of the motion speed, and the motion acceleration includes the direction of the motion acceleration and the value of the motion acceleration.

[0185] It is understood that when the user pushes the cleaning device forward, the speed direction is positive, and when the user pulls the cleaning device backward, the speed direction is negative. When the cleaning device decelerates, the direction of the acceleration is negative. That is, when the forward speed of the cleaning device decreases, the direction of the acceleration is negative, and when the backward speed of the cleaning device decreases, the direction of the acceleration is negative.

[0186] In one embodiment, the first preset condition includes: the motion state includes a motion speed, the direction of the motion speed is forward, and the value of the motion speed decreases to be less than or equal to a first preset speed threshold.

[0187] In one embodiment, the first preset condition includes: the motion state includes motion speed and motion acceleration, the direction of the motion speed is forward, the direction of the motion acceleration is negative, and the value of the motion acceleration increases to be greater than or equal to the first preset acceleration threshold.

[0188] According to the user's usage habit of pushing forward or pulling back, when the cleaning device is pushed forward until the speed continues to decrease, it generally stops or pulls back after the speed is reduced to 0. The inventors of the present disclosure have conducted multiple tests on the process of pushing forward and pulling back the cleaning device and the process of the drive mechanism performing the first preset action, and determined that when the speed value of the cleaning device's forward movement decreases to less than or equal to the first preset speed threshold or when the direction of the cleaning device's forward acceleration is negative and the value of the acceleration increases to greater than or equal to the first preset acceleration threshold, the drive mechanism is controlled to start driving the scraper bar 120 to move to the second position. When the speed of the cleaning device is reduced to 0, the scraper bar 120 can just move to the second position in contact with the surface to be cleaned. At this time, if the cleaning device is pulled back, the scraper bar 120 maintains contact with the surface to be cleaned at the beginning of the cleaning device being pulled back, thereby truly scraping off the water stains on the surface to be cleaned within the entire distance the cleaning device is pulled back.

[0189] Figure 5 The figure shows the time-varying curves of the cleaning device's speed and acceleration during the push-pull test. In one embodiment, the first preset condition includes: the motion state also includes speed and acceleration, the direction of the speed is forward, the speed decreases to less than or equal to a first preset speed threshold, and the direction of the acceleration is negative and the acceleration increases to greater than or equal to the first preset acceleration threshold.

[0190] The inventors of the present disclosure further conducted multiple tests on the changes in speed and acceleration during the forward and backward movement of the cleaning device and the process of the driving mechanism performing the first preset action, and obtained the following results: Figure 5 The graph of exemplary movement speed and movement acceleration changing with time is shown, wherein the horizontal axis is time, the horizontal axis is time, and the vertical axis is movement speed / movement acceleration. Figure 5 During the forward movement of the cleaning device, when the speed decreases to less than or equal to a first preset speed threshold value P and the acceleration increases to greater than or equal to a first preset acceleration threshold value Q, the control drive mechanism begins to drive the scraper bar 120 toward the second position. When the speed of the cleaning device decreases to zero, the scraper bar 120 can move to the second position just in contact with the surface to be cleaned. At this point, if the cleaning device is then pulled back, the scraper bar 120 can scrape away water stains from the surface to be cleaned throughout the entire distance the cleaning device is pulled back.

[0191] It can be understood that when the direction of the motion acceleration is negative and the value of the motion acceleration is greater than or equal to the first preset acceleration threshold, the time corresponding to the motion speed decreasing from the forward first preset speed threshold to 0 is t1, and the time corresponding to the driving mechanism performing the first preset action to move the scraper 120 from the first position to the second position is t2, and t2≤t1 is satisfied.

[0192] For example, if the travel of the scraper 120 from the first position to the second position is 10 mm, the drive mechanism drives the scraper 120 from the first position to the second position in a rotational manner, the rotation angle of the drive mechanism is 45°, and the speed of the drive mechanism is 80 rpm / min, the action time of the drive mechanism can be calculated as t2 = 45 / 360 / (80 / 60) = 0.094 s. After multiple push-pull tests, it is estimated that when the forward speed of the cleaning device decreases to P = 0.5 m / s and the reverse acceleration increases to Q = 160 mm / s 2 From the time these two conditions are met until the cleaning device decelerates to zero, the time t1 is 100-200ms. This shows that t1 meets the minimum time requirement for the scraper bar 120 to advance. It should be understood that this is merely an example and does not limit the cleaning device of the present disclosure. The stroke of the scraper bar 120 and the drive mechanism's drive type and drive parameters can vary depending on the cleaning device's structure, thereby selecting different preset speed and acceleration thresholds.

[0193] In one embodiment, the motion state includes a motion speed, and the first preset condition includes: the motion speed increases from 0 to greater than 0, and the motion speed is in a backward direction. That is, within the preset time period, if the cleaning device moves from a stationary state to a backward position, and if the scraper bar 120 is in the first position at this time, the drive mechanism drives the scraper bar 120 to move from the first position to the second position; if the scraper bar 120 is in the second position at this time, the scraper bar 120 remains in the second position.

[0194] According to the user's conventional usage habit of pushing forward and pulling backward, the user generally pushes the cleaning device forward and then pulls the cleaning device backward.

[0195] If the user operates the cleaning device according to conventional usage habits, when the cleaning device is pulled backward from a stationary position, since conventional user usage habits require the cleaning device to be pushed forward before being pulled backward, according to one embodiment, when the speed, or speed and acceleration, of the scraping bar 120 during the forward deceleration process meets certain conditions, the scraping bar 120 is driven by the drive mechanism to move to the second position. Therefore, when the cleaning device of this embodiment is pulled backward from a stationary position, the scraping bar 120 is already in the second position and remains in the second position. In this way, the scraping bar 120 can remove water stains from the surface to be cleaned throughout the entire distance the cleaning device is pulled backward.

[0196] For the user's unconventional operations, for example, when the user starts to use the cleaning device, the scraper bar 120 is pulled back. At this time, the scraper bar 120 is in the first position, and the driving mechanism performs the first preset action to drive the scraper bar 120 from the first position to the second position. The scraper bar 120 moved to the second position contacts the surface to be cleaned, and the water stains on the surface to be cleaned are scraped off during the process of pulling the cleaning device back.

[0197] In one embodiment, the motion state includes a motion speed, and the first preset condition includes: within a first preset time period, the direction of the motion speed changes from forward to backward. That is, within the first preset time period, the cleaning device advances forward, decelerates to zero, and then pulls back without stopping for a long time. Under normal circumstances, the scraper bar 120 has moved from the first position to the second position when the forward motion decelerates to zero. If the scraper bar 120 is decelerated to zero and then pulled back, it will remain in the second position.

[0198] In one embodiment, the control method further includes: in response to the working state satisfying a second preset condition, controlling the drive mechanism to perform a second preset action when the scraper 120 is in the second position, so that the drive mechanism drives the scraper 120 to move from the second position to the first position.

[0199] During the forward pushing of the cleaning device, the scraper bar 120 should be in the first position, with a gap between the scraper bar 120 and the surface to be cleaned, to avoid pushing dirt on the front side of the cleaning device forward and affecting dirt recovery, thereby improving the cleaning efficiency of dirt in front of the cleaning device.

[0200] If, after detecting forward movement, the cleaning device controls the drive mechanism to drive the scraper bar 120 from the second position to the first position, that is, within a certain distance after the cleaning device begins to move forward, the scraper bar 120 does not actually rise to the first position. During this distance, since the scraper bar 120 is still in contact with the surface to be cleaned, it affects the recovery of dirt from the surface to be cleaned in front of the scraper bar 120. Therefore, the control method of the embodiment of the present disclosure controls the drive mechanism according to the different working conditions of the cleaning device, pre-determines the forward movement of the cleaning device, and thus controls the drive mechanism in advance to advance the movement of the scraper bar 120 to the first position. In this way, when the cleaning device actually moves forward, the scraper bar 120 can move to the first position to maintain a gap with the surface to be cleaned, truly ensuring that the recovery of dirt in front of the cleaning device is not affected throughout the entire forward movement.

[0201] In one embodiment, the motion state includes a motion speed, and the second preset condition includes: the motion speed is in a forward direction, the motion speed decreases to 0, and the duration corresponding to the motion speed being 0 is greater than a second preset duration threshold. In other words, the cleaning device decelerates forward to 0, and the dwell time is greater than the second preset duration threshold.

[0202] It is understandable that the second preset time threshold is greater than or equal to the first preset time. As mentioned above, within the first preset time, the cleaning device is pushed forward and decelerated to 0, and is pulled back without stopping for too long, and the scraper bar 120 remains in the second position. If the cleaning device is pushed forward and decelerated to 0 and then stops for a period of time, according to the user's normal usage habits, when the cleaning device stops for a long time, the user will generally push the cleaning device forward again when operating it again. Therefore, in this embodiment, when the cleaning device is pushed forward and decelerated to 0, the judgment of the stop time is made to predict the forward push of the cleaning device again, and the action of the driving mechanism is controlled in advance to ensure that the scraper bar 120 can move to the first position when the cleaning device is pushed forward again, thereby truly avoiding the influence of the scraper bar 120 on the dirt recovery during the entire process of pushing the cleaning device forward.

[0203] Exemplarily, the second preset duration threshold is 200ms, and the first preset time is a value less than 200ms.

[0204] In one embodiment, the second preset condition includes: the motion state includes a motion speed, the direction of the motion speed is backward, and the value of the motion speed decreases to less than or equal to a second preset speed threshold.

[0205] In one embodiment, the second preset condition includes: the motion state includes motion speed and motion acceleration, the direction of the motion speed is backward, the direction of the motion acceleration is negative and the value of the motion acceleration increases to be greater than or equal to the second preset acceleration threshold.

[0206] In one embodiment, the second preset condition includes: the motion state includes motion speed and motion acceleration, the direction of the motion speed is backward, the value of the motion speed decreases to less than or equal to the second preset speed threshold, the direction of the motion acceleration is negative and the value of the motion acceleration increases to greater than or equal to the second preset acceleration threshold.

[0207] According to typical user habits, the next action after the cleaning device is pulled back and decelerated to zero is generally to push forward or remain stationary. If the cleaning device is then pushed forward after being pulled back, and the forward push is detected, the drive mechanism is controlled to drive the scraper bar 120 to the second position, then for a period of time after the cleaning device begins to push forward, the scraper bar 120 does not actually rise to the first position. During this period, the scraper bar 120 remains in contact with the surface to be cleaned, pushing dirt on the front side of the cleaning device forward and preventing it from being sucked into the suction port 212a on the rear side of the cleaning member 220. To address this issue, the cleaning device of the aforementioned embodiment anticipates the forward push of the cleaning device based on changes in speed and / or acceleration during the backward movement, thereby controlling the drive mechanism in advance to move the scraper bar 120 to the first position. This allows the scraper bar 120 to precisely move to the first position, a predetermined distance from the surface to be cleaned, when the cleaning device switches from pulling back to pushing forward. This ensures that the scraper bar maintains a gap from the surface to be cleaned throughout the entire forward push of the cleaning device, preventing dirt from being sucked into the suction port 212a on the rear side of the cleaning member 220.

[0208] In one embodiment, the motion state includes a motion speed; the second preset condition includes: the motion speed is in the forward direction, and the motion speed value increases from 0 to greater than 0. That is, when the cleaning device is pushed forward from a stationary position, the scraper bar 120 should be raised to avoid affecting the recovery of dirt from the surface to be cleaned on the front side of the cleaning device.

[0209] In one embodiment, the working state further includes a posture state and a power-on state, the posture state includes a cleaning posture or a standby posture, and the power-on state includes a power-on state or a power-off state; the second preset condition includes: the main body of the cleaning device switches from the cleaning posture to the standby posture; or, the cleaning device switches from the power-on state to the power-off state. It can be understood that the cleaning posture is the posture of the cleaning device in an inclined state (or lying state) during the process of the user operating the cleaning device to push or pull it forward, and the standby posture is the upright posture of the cleaning device in the storage position.

[0210] According to the user's normal usage habits, the user generally pushes the cleaning device forward. When the cleaning device is in the standby position or turned off, the scraper bar 120 should be raised so that the scraper bar 120 is in the first position. When the user pushes the cleaning device forward, the scraper bar 120 will not affect the dirt recovery on the front side of the cleaning device.

[0211] In another example, after the main body of the cleaning device switches from the cleaning position to the standby position or the cleaning device is shut down, the cleaning device will retreat a short distance. Therefore, in one embodiment, the second preset condition includes: after the main body of the cleaning device switches from the cleaning position to the standby position or the shutdown state, a preset time period has passed or the cleaning device has moved backward a preset distance, and then the drive mechanism drives the scraper from the second position to the first position. In this way, when the cleaning device is upright or shut down, or when the cleaning device retreats, the scraper in the second position can still wipe away residual water on the surface to be cleaned.

[0212] According to the user's normal usage habits, the user operates the cleaning device to complete a forward push and backward pull process. The cleaning device generally has two different state switching situations: the first state switching situation: the cleaning device goes from stationary to forward push, decelerates the forward push, and then pulls backward, and finally the backward pull speed drops to 0, completing a forward push and backward pull cleaning operation. The second state switching situation: the cleaning device goes from stationary to forward push, decelerates the forward push, decelerates to 0, stops for a period of time, and then pulls backward, and finally the backward pull speed drops to 0, completing a forward push and backward pull cleaning operation. When the cleaning device is in the standby position or the off state, the scraper bar 120 remains in the first position, that is, the raised state.

[0213] Figure 6 The first example flow chart of the control method of the cleaning device according to the embodiment of the present disclosure is shown. The flow chart shows a control process taking the two state switching situations of the cleaning device during a forward push and backward pull cleaning process as an example. Specifically, when the user operates the cleaning device to start the cleaning work, the scraper 120 is in the first position. When the cleaning device starts to move to perform cleaning work, the cleaning device moves forward from a stationary position in a cleaning posture. First, step S602 is executed to obtain the speed of the cleaning device. The speed of the cleaning device gradually increases from 0, and the speed direction is forward. Then, the forward speed increases to the maximum value and then begins to decrease; in step S604, when the speed direction is forward and the speed value decreases to less than or equal to the first preset speed threshold, step S606 is executed to control the drive mechanism to drive the scraper 120 from the first position to the second position. The cleaning device continues to move forward at a reduced speed. After that, the cleaning device may switch between two different states, S608 or S616.

[0214] In step S608, when the forward speed decreases to 0, the scraper 120 has just or has moved to the second position. When the cleaning device switches its speed direction to backward within a short period of time, that is, within the first preset time period, the drive mechanism no longer operates, that is, in step S610, the scraper 120 remains in the second position, so that the water stains on the surface to be cleaned are scraped off within the entire distance of the cleaning device being pulled back. The cleaning device continues to move backward, and the scraper 120 remains in the second position. In step S612, when the cleaning device gradually decelerates backward and decelerates to a speed less than or equal to the second preset speed threshold, step S614 is executed to control the drive mechanism to drive the scraper 120 from the second position to the first position, that is, the scraper 120 is lifted and maintains a gap with the surface to be cleaned. The cleaning device continues to decelerate backward to 0, after which the cleaning device may be stationary or may move forward. If it moves forward, step S602 is re-executed.

[0215] In step S616, when the forward speed decreases to zero, the scraper bar 120 has just moved to or has already moved to the second position. If the cleaning device has been stationary for a relatively long time, and the time it has been stationary exceeds a second preset time threshold, this indicates that the cleaning device has been stationary for a relatively long time. According to user habits, when the cleaning device moves again after a long period of stasis, it generally pushes forward. Therefore, when the stationary time exceeds the second preset time threshold, step S618 is executed, controlling the drive mechanism to move the scraper bar 120 from the second position to the first position. If the cleaning device subsequently switches to a forward push, the drive mechanism remains inactive, and the scraper bar 120 remains in the first position. If the cleaning device changes direction of motion, i.e., switches to a backward direction in step S620, step S622 is executed, controlling the drive mechanism to move the scraper bar 120 from the first position to the second position. If the cleaning device is moving backward, and the backward speed decreases to zero at step S612, the cleaning device has completed a forward push-backward cleaning operation, and step S614 is executed, controlling the drive mechanism to move the scraper bar 120 from the second position to the first position.

[0216] In one embodiment, the drive mechanism includes a drive assembly, a connecting rod and a swing arm, the first end of the connecting rod is transmission-connected to the drive assembly, the first end of the swing arm is connected to the second end of the connecting rod, and the second end of the swing arm is connected to the scraper strip 120; the drive assembly is configured to be controlled to rotate in a first preset direction or a second preset direction to drive the scraper strip 120 to move between the first position and the second position through the connecting rod and the swing arm.

[0217] The first preset action includes: rotating a preset angle in a first preset direction; the second preset action includes: rotating a preset angle in a second preset direction, and the second preset direction is opposite to the first preset direction.

[0218] For example, the drive assembly rotates counterclockwise by a preset angle, driving the connecting rod to rotate counterclockwise, thereby driving the scraper bar 120 to descend from the first position to the second position via the swing arm; the drive assembly rotates clockwise, driving the scraper bar 120 to ascend from the second position to the first position via the connecting rod and the swing arm, thereby achieving the lifting and lowering of the scraper bar 120 between the first and second positions.

[0219] In one embodiment, the control method of any of the above embodiments is applied to any of the above cleaning devices. The structures of the cleaning devices are described in detail in each of the above embodiments, which will not be repeated here.

[0220] Figure 7 A flowchart illustrating a second example of a method for controlling a cleaning device according to an embodiment of the present disclosure is provided. The present disclosure also provides a method for controlling a cleaning device, wherein the cleaning device includes a cleaning member 220 for contacting a surface to be cleaned, a scraping bar 120 located in front of the cleaning member 220, and a drive mechanism. The drive mechanism is coupled to the scraping bar 120 for driving the scraping bar 120 between a first position and a second position. In the first position, there is a gap between the scraping bar 120 and the surface to be cleaned. When the scraping bar 120 moves to the second position, the scraping bar 120 contacts the surface to be cleaned.

[0221] See also Figure 7 The control method of the cleaning device of this embodiment includes: S702: the direction of the movement speed of the cleaning device is forward. If the value of the movement speed decreases to 0 and the direction of the movement speed is switched to backward within a first preset time threshold, the driving mechanism is controlled to drive the scraper 120 to move from the first position to the second position and maintain it at the second position.

[0222] S704: The direction of the movement speed of the cleaning device is forward. If the movement speed value decreases to 0 and the duration of the movement speed being 0 is greater than the second preset duration threshold, the control driving mechanism drives the scraper 120 to move from the first position to the second position and then from the second position to the first position again.

[0223] The second preset duration threshold is greater than or equal to the first preset duration threshold.

[0224] Based on the user's typical usage habits, this embodiment provides corresponding control methods for two different motion scenarios of the cleaning device. Specifically, if the cleaning device moves from forward propulsion to deceleration to zero, and then from rest to rearward propulsion, and the rest period is short, and the cleaning device is pulled rearward within a first preset time threshold, the scraper bar 120 is driven from the first position to the second position and maintained in the second position. Thus, during the rearward propulsion of the cleaning device, the scraper bar 120 can contact the surface to be cleaned and scrape away dirt from the surface.

[0225] If the cleaning device decelerates from forward motion to zero and the dwell time exceeds a second preset duration threshold, the drive mechanism is controlled to move the scraper bar 120 from the first position to the second position, and then the drive mechanism is again controlled to drive the scraper bar 120 from the second position to the first position. It is understood that, depending on the user's typical usage habits, the cleaning device may remain stationary for an extended period after decelerating from forward motion to zero, or may directly switch to a backward motion. Therefore, before the cleaning device decelerates from forward motion to zero, the drive mechanism may be controlled to drive the scraper bar 120 from the first position to the second position in advance to prepare for the direct switch to a backward motion after the cleaning device decelerates to zero. This ensures that the scraper bar 120 is already in contact with the surface to be cleaned at the beginning of the backward motion, thereby effectively scraping dirt from the surface to be cleaned throughout the entire backward motion process. If the stationary time after the cleaning device decelerates to zero exceeds the second preset duration threshold, it can be determined that the cleaning device is likely to remain stationary and will not further reverse, and based on the user's usage habits, the cleaning device's next motion state is likely to be forward motion. Therefore, the cleaning device controls the driving mechanism to drive the scraper bar 120 to return from the second position to the first position, which will not affect the dirt recovery during the next forward movement of the cleaning device.

[0226] Figure 8 A flowchart illustrating a third example of a method for controlling a cleaning device according to an embodiment of the present disclosure is provided. The present disclosure also provides a method for controlling a cleaning device, wherein the cleaning device includes a cleaning member 220 configured to contact a surface to be cleaned and a scraping bar 120 positioned in front of the cleaning member 220. The scraping bar 120 is movable between a first position and a second position. In the first position, a gap exists between the scraping bar 120 and the surface to be cleaned. When the scraping bar 120 moves to the second position, the scraping bar 120 contacts the surface to be cleaned.

[0227] See also Figure 8 The control method of the cleaning device of this embodiment includes the following steps: S802: When the cleaning device is powered on and in a stationary state, the scraper bar 120 is in the first position; S804: The cleaning device moves, and the speed direction of the cleaning device increases from 0 to the forward direction, and the scraper bar 120 remains in the first position. S806: When the forward movement of the cleaning device continues, and the forward movement of the cleaning device satisfies a first preset condition, the scraper bar 120 moves from the first position to the second position.

[0228] The first precondition includes:

[0229] The direction of the movement speed is forward, and the value of the movement speed decreases to be less than or equal to the first preset speed threshold;

[0230] Alternatively, the direction of the motion speed is forward, the direction of the motion acceleration is negative, and the value of the motion acceleration increases to be greater than or equal to a first preset acceleration threshold;

[0231] Alternatively, the direction of the movement speed is forward, the value of the movement speed decreases to less than or equal to the first preset speed threshold, the direction of the movement acceleration is negative and the value of the movement acceleration increases to greater than or equal to the first preset acceleration threshold.

[0232] See also Figure 5 In the example curve shown, when the speed decreases to less than or equal to the first preset speed threshold and the acceleration increases to greater than or equal to the first preset acceleration threshold, the scraper bar 120 moves to the second position. When the speed of the cleaning device decreases to zero, the scraper bar 120 can move to the second position just in contact with the surface to be cleaned. At this point, if the cleaning device is then pulled back, the scraper bar 120 can scrape away the water stains on the surface to be cleaned throughout the entire distance the cleaning device is pulled back.

[0233] This embodiment monitors the change in the speed value during the forward movement of the cleaning device. When the numerical value of the movement speed and / or the data of the movement acceleration meet the corresponding specific conditions, the scraper 120 of the cleaning device moves from the first position to the second position, thereby moving the scraper 120 to the second position in advance before the cleaning device switches to the rear pull, ensuring that the scraper 120 can move into place when the cleaning device switches to the rear pull, and truly scraping off the water stains on the surface to be cleaned within the entire rear pull distance.

[0234] The movement of the scraper 120 between the first position and the second position in this embodiment can be achieved by the driving mechanism of the aforementioned embodiment, or by other mechanisms capable of achieving the movement of the scraper 120, such as pneumatic or hydraulic drive, magnetic drive, or electric drive combined with spring return.

[0235] In one embodiment, the speed direction of the cleaning device continues forward, and the control method further includes any one of the following:

[0236] When the forward speed of the cleaning device decreases to 0, if the cleaning device moves backward within the first preset time period, the scraper bar 120 remains at the second position.

[0237] When the forward speed of the cleaning device decreases to 0, if the speed remains at 0 for more than a second predetermined time period, the scraper bar 120 moves from the second position to the first position.

[0238] When the forward speed of the cleaning device decreases to 0, if the cleaning device moves forward again within the third preset time period, the scraper bar 120 moves from the second position to the first position.

[0239] In one example, the first preset duration, the second preset duration, and the third preset duration may be the same, for example, 200 ms. In another example, the first preset duration may be less than the second preset duration, and the third preset duration may be less than the second preset duration. For example, if the second preset duration is 200 ms, the first preset duration and the third preset duration are both less than 200 ms.

[0240] When the forward speed of the cleaning device decreases to 0 and moves backward in a short time, the scraper bar 120 remains in the second position. The scraper bar 120 contacts the surface to be cleaned at the beginning of the backward movement of the cleaning device, thereby scraping the surface to be cleaned during the entire process of the cleaning device being pulled backward.

[0241] When the forward speed of the cleaning device decreases to 0 and the dwell time is long, based on the user's normal usage habits, the user is likely to push the cleaning device forward when operating it again. Therefore, when the dwell time of the cleaning device exceeds the second preset time, the scraper bar 120 moves from the second position to the first position, maintaining a gap with the surface to be cleaned. Therefore, when the cleaning device is subsequently pushed forward, the scraper bar 120 will not affect the collection of dirt on the surface to be cleaned on the front side of the cleaning device.

[0242] When the forward speed of the cleaning device decreases to 0, if it moves forward again in a short time, the scraper bar 120 should naturally move from the current second position to the first position to avoid the scraper bar 120 affecting the recovery of dirt during the forward movement of the cleaning device.

[0243] In one embodiment, the cleaning device continues to move in a backward direction, and the scraper bar 120 remains in the second position. When the backward moving cleaning device meets a second preset condition, the scraper bar moves from the second position to the first position. The second preset condition includes:

[0244] The direction of the movement speed is backward, and the value of the movement speed decreases to be less than or equal to a second preset speed threshold;

[0245] Alternatively, the direction of the motion speed is backward, the direction of the motion acceleration is negative, and the value of the motion acceleration increases to be greater than or equal to a second preset acceleration threshold;

[0246] Alternatively, the direction of the movement speed is backward, the value of the movement speed decreases to less than or equal to the second preset speed threshold, the direction of the movement acceleration is negative and the value of the movement acceleration increases to greater than or equal to the second preset acceleration threshold.

[0247] According to typical user habits, the next action after the cleaning device is pulled back and decelerated to zero is generally to push forward or remain stationary. If the cleaning device is then pushed forward after being pulled back, and the forward push is detected, the drive mechanism is controlled to drive the scraper bar 120 to the second position, then for a period of time after the cleaning device begins to push forward, the scraper bar 120 does not actually rise to the first position. During this period, the scraper bar 120 remains in contact with the surface to be cleaned, pushing dirt on the front side of the cleaning device forward and preventing it from being sucked into the suction port 212a on the rear side of the cleaning member 220. To address this issue, the cleaning device of the aforementioned embodiment anticipates the forward push of the cleaning device based on changes in speed and / or acceleration during the backward movement, thereby controlling the drive mechanism in advance to move the scraper bar 120 to the first position. This allows the scraper bar 120 to precisely move to the first position, a predetermined distance from the surface to be cleaned, when the cleaning device switches from pulling back to pushing forward. This ensures that the scraper bar maintains a gap from the surface to be cleaned throughout the entire forward push of the cleaning device, preventing dirt from being sucked into the suction port 212a on the rear side of the cleaning member 220.

[0248] According to typical user habits, when a user operates a cleaning device to complete a forward-pushing and backward-pull cleaning operation, the cleaning device generally undergoes two different state transitions: In the first state transition, the cleaning device transitions from a stationary state to a forward push, then decelerates and then pulls backward, with the backward-pull speed finally decreasing to zero, completing a forward-pushing and backward-pull cleaning operation. When the cleaning device is in the standby position or off, the scraper blade 120 remains in the first position, i.e., raised. Therefore, when the user turns on the cleaning device and begins operating it in the cleaning position, the scraper blade 120 is in the first position. In the first state transition during the cleaning process, the scraper blade 120 initially remains in the first position. When the forward push and deceleration of the cleaning device meet a speed condition, the scraper blade 120 is depressed, i.e., moves to the second position. When the cleaning device is further pulled backward, the scraper blade 120 remains in the second position. When the backward-pull speed decreases to less than or equal to a second preset speed threshold and / or the backward-pull acceleration increases to greater than or equal to a second preset acceleration threshold, the scraper blade 120 is raised to the first position.

[0249] The second state switching situation: the cleaning device goes from being stationary to pushing forward, then decelerates, decelerates to 0, stops for a period of time, and then pulls back, and finally the pulling speed drops to 0, completing a forward-pushing-back-pull cleaning operation. When the user turns on the cleaning device and starts operating it for cleaning, the scraper 120 is in the first position. Regarding the second state switching situation of the cleaning device during the cleaning process, the scraper 120 first remains in the first position. When the forward deceleration of the cleaning device meets the speed condition, the scraper 120 is pressed down. When the cleaning device decelerates to 0, the scraper 120 is pressed down to the second position. When the stationary time of the cleaning device exceeds a certain threshold, the scraper 120 is raised to the first position. When the scraper 120 is stationary for a period of time and then pulled back, the scraper 120 is pressed down to the second position again. When the pulling speed drops to less than or equal to the second preset speed threshold and / or the pulling acceleration increases to greater than or equal to the second preset acceleration threshold, the scraper 120 is raised to the first position.

[0250] It can be seen that the scraper 120 can switch between the first position and the second position according to the change of the movement state of the cleaning device, and the scraper 120 can move in advance before the cleaning device starts to pull back, ensuring that during the pulling back of the cleaning device, the scraper 120 is always in contact with the surface to be cleaned to scrape off the dirt; and ensuring that during the pushing forward of the cleaning device, the scraper 120 always maintains a gap with the surface to be cleaned, and will not affect the suction of dirt by the suction port 212a.

[0251] This embodiment also provides a cleaning device, including a floor brush body 210, a covering portion, a cleaning member 220, a scraping bar 120, a driving mechanism, and a control unit. The covering portion is installed on the front side of the floor brush body 210, and the covering portion and the floor brush body 210 define a receiving cavity located on the front side of the floor brush body 210. The cleaning member 220 is arranged in the receiving cavity for contacting the surface to be cleaned, and the scraping bar 120 is arranged on the covering portion and is located on the front side of the cleaning member 220. The driving mechanism is in transmission cooperation with the scraping bar 120, and is used to drive the scraping bar 120 to move from a first position to a second position. When the scraping bar 120 is in the first position, there is a gap between it and the surface to be cleaned, and when the scraping bar 120 moves to the second position, it contacts the surface to be cleaned;

[0252] The control unit is used to execute: when the cleaning device is in a stationary state after being turned on, the scraper bar 120 is in the first position; the cleaning device moves, and the speed direction of the cleaning device is forward, the speed value increases from 0, and the scraper bar 120 remains in the first position; the speed direction of the cleaning device continues to move forward, and when the forward-moving cleaning device meets the first preset condition, the scraper bar 120 moves from the first position to the second position.

[0253] The first precondition includes:

[0254] The direction of the movement speed is forward, and the value of the movement speed decreases to be less than or equal to the first preset speed threshold;

[0255] Alternatively, the direction of the motion speed is forward, the direction of the motion acceleration is negative, and the value of the motion acceleration increases to be greater than or equal to a first preset acceleration threshold;

[0256] Alternatively, the direction of the movement speed is forward, the value of the movement speed decreases to less than or equal to the first preset speed threshold, the direction of the movement acceleration is negative and the value of the movement acceleration increases to greater than or equal to the first preset acceleration threshold.

[0257] The control unit of this embodiment can be used to execute the control method of any of the aforementioned embodiments.

[0258] The cleaning device of this embodiment monitors the change in speed value during the forward movement. When the numerical value of the movement speed and / or the data of the movement acceleration meet the corresponding specific conditions, the scraper 120 of the cleaning device moves from the first position to the second position, thereby moving the scraper 120 to the second position in advance before the cleaning device switches to the rear pull, ensuring that the scraper 120 can move into place when the cleaning device switches to the rear pull, and truly scraping off the water stains on the surface to be cleaned within the entire rear pull distance.

[0259] In the description of this specification, it should be understood that the terms "length", "up", "down", "front", "back", "left", "right", "vertical", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present disclosure.

[0260] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. Throughout the present disclosure, "plurality" means two or more, unless otherwise specifically defined.

[0261] In this disclosure, unless otherwise expressly specified or limited, terms such as "connected" and "connection" may refer to electrical connection or communication; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0262] In the present disclosure, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature includes the first feature being directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0263] The disclosure above provides many different embodiments or examples for implementing different structures of the present disclosure. In order to simplify the disclosure of the present disclosure, the components and settings of specific examples are described above. Of course, these are merely examples and are not intended to limit the present disclosure. In addition, the present disclosure may repeat reference numbers and / or reference letters in different examples. Such repetition is for the purpose of simplicity and clarity and does not in itself indicate the relationship between the various embodiments and / or settings discussed.

[0264] The above description is merely a specific embodiment of the present disclosure, but the scope of protection of the present disclosure is not limited thereto. Any person skilled in the art can easily conceive of various modifications or substitutions within the technical scope disclosed in this disclosure, and such modifications or substitutions should be included in the scope of protection of the present disclosure. Therefore, the scope of protection of the present disclosure should be based on the scope of protection of the claims.

Claims

1. A cleaning device, characterized in that: include: Floor brush body; a covering portion, mounted on the front side of the floor brush body, wherein the covering portion and the floor brush body define an accommodating cavity located on the front side of the floor brush body; A cleaning member, disposed in the accommodating cavity and configured to contact the surface to be cleaned; a scraper bar, provided on the covering portion and located on the front side of the cleaning member; a driving mechanism, in transmission cooperation with the scraper bar, for driving the scraper bar to move from a first position to a second position, wherein a gap exists between the scraper bar and the surface to be cleaned when the scraper bar is in the first position and the scraper bar contacts the surface to be cleaned when the scraper bar moves to the second position; A first position retaining member is provided. When the scraper strip is located at the second position, the first position retaining member acts on the scraper strip to retain the scraper strip at the second position.

2. The cleaning device according to claim 1, characterized in that The first position retaining member includes a magnetic member and a first magnetic matching member. The magnetic member is arranged on the scraper strip, and the first magnetic matching member is arranged on the covering part. There is a first magnetic force that interacts with the magnetic member and the first magnetic matching member. When the scraper strip is located in the second position, the magnetic member and the first magnetic matching member are attracted.

3. The cleaning device according to claim 2, characterized in that The scraping bar extends along the axis direction of the cleaning member, and in the extending direction of the scraping bar, the first magnetic force acts on a first point of the scraping bar, and the driving mechanism acts on a second point of the scraping bar; The first points include at least one first fulcrum, the second points include at least one second fulcrum, and a line connecting at least one first fulcrum and at least one second fulcrum is not perpendicular to an extension direction of the scraper strip.

4. The cleaning device according to claim 1, characterized in that The driving mechanism is also used to drive the scraper to move from the second position to the first position; The cleaning device also includes: A second position retaining member acts on the scraper bar when the scraper bar is located at the first position, so that the scraper bar is retained in the first position.

5. The cleaning device according to claim 4, characterized in that The second position retaining member includes a magnetic member and a second magnetic matching member. The magnetic member is arranged on the scraper strip, and the second magnetic matching member is arranged on the covering part. There is a second magnetic force that interacts with each other between the magnetic member and the second magnetic matching member. When the scraper strip is located at the first position, the magnetic member and the second magnetic matching member are attracted.

6. The cleaning device according to claim 2, characterized in that The second position and the first position are arranged opposite to each other in a vertical direction, the first magnetic matching member and the second magnetic matching member are arranged opposite to each other in the vertical direction, and the magnetic member is located between the first magnetic matching member and the second magnetic matching member; The first magnetic force and the second magnetic force are attractive forces, and the first magnetic matching component is located below the second magnetic matching component in the vertical direction.

7. The cleaning device according to claim 2, characterized in that There are at least two magnetic members, and the magnetic members are spaced apart in the longitudinal direction of the scraper strip; The covering part includes a floor brush cover body, and the scraper strip is located on the front side of the floor brush cover body. There are at least two first magnetic fitting parts, and each first magnetic fitting part corresponds to each magnetic part one by one; two of the first magnetic fitting parts are respectively arranged at the front end of the floor brush cover body.

8. The cleaning device according to claim 5, characterized in that There are at least two magnetic members, and the magnetic members are spaced apart in the longitudinal direction of the scraper strip; The covering part includes a floor brush cover body, and the scraper strip is located on the front side of the floor brush cover body. There are at least two second magnetic fitting parts, and each second magnetic fitting part corresponds to each magnetic part one by one; two of the second magnetic fitting parts are respectively arranged at the front end of the floor brush cover body at intervals.

9. The cleaning device according to claim 6, characterized in that The scraper strip is defined with a first guide hole corresponding to the magnetic member; The scraper strip defines a mounting groove in an upper area of ​​the first guide hole, and the magnetic member is disposed in the mounting groove; Furthermore, one of the first magnetic matching component and the second magnetic matching component is located in the first guide hole and below the magnetic component, and the other is located outside the first guide hole and above the magnetic component.

10. The cleaning device according to claim 1, characterized in that Also includes: A guide bracket, a receiving groove corresponding to the guide bracket is formed on the rear side of the scraper strip, the guide bracket is arranged in the receiving groove, and there is a spacing space between the two sides of the guide bracket in the extension direction of the scraper strip and the two sides of the receiving groove in the extension direction of the scraper strip; a guide slide is defined on the rear side of the guide bracket; The covering portion includes a floor brush cover body, the scraper bar is located on the front side of the floor brush cover body, and a forward-protruding guide rib is formed on the front side of the floor brush cover body. The guide rib slides in cooperation with the guide slide to guide the scraper bar to move between the second position and the first position.

11. The cleaning device according to claim 1, characterized in that The covering portion includes a floor brush cover, and the scraping strip is located on the front side of the floor brush cover. The driving mechanism includes: A driving assembly is provided on the floor brush body or the floor brush cover; A transmission member is provided on the floor brush cover, and the transmission member is in transmission connection with the drive assembly and connected to the scraper bar; wherein, the drive assembly is configured to drive the transmission member to rotate so that the transmission member drives the scraper bar to move between the second position and the first position.

12. The cleaning device according to claim 11, characterized in that The transmission member includes: a connecting rod, a first end of which is drivingly connected to the driving assembly and rotates under the drive of the driving assembly; A swing arm, a first end of which is connected to the second end of the connecting rod, and a second end of the swing arm is connected to the scraper strip, and is configured to swing with the rotation of the connecting rod to drive the scraper strip to rise and fall between the second position and the first position.

13. The cleaning device according to claim 12, characterized in that A matching hole extending along the length direction of the scraper strip is formed on the upper side of the scraper strip, and a connecting shaft extending forward and backward is defined at the second end of the swing arm, and the connecting shaft is slidably matched with the matching hole.

14. The cleaning device according to claim 13, characterized in that The matching hole is located in the middle of the scraper strip in the length direction of the scraper strip, and the transmission member is located in the middle of the floor brush cover in the length direction of the floor brush cover.

15. The cleaning device according to claim 12, characterized in that The driving assembly includes a driving member and a coupling, and the first end of the connecting rod is drivingly connected to the driving member through the coupling; A connecting port is formed at the end of the coupling, and the connecting port is in the shape of a "I" or a "X". The first end of the connecting rod is adapted to the connecting port and is clamped in the connecting port.

16. The cleaning device according to any one of claims 1 to 15, characterized in that When the scraper is in the first position, the distance between the lower end of the scraper and the surface to be cleaned is greater than a preset distance, which is the distance between the outer peripheral wall of the cleaning member and the inner wall of the sewage suction port of the cleaning device.

17. The cleaning device according to any one of claims 1 to 15, characterized in that When the scraper bar is located at the second position, the interference between the scraper bar and the surface to be cleaned is greater than or equal to the interference between the scraper of the cleaning device located at the rear side of the cleaning member and the surface to be cleaned.

18. The cleaning device according to claim 1, characterized in that The scraper strip comprises: a hard portion, which is in transmission connection with the driving mechanism, and a magnetic member is disposed on the hard portion; The flexible cleaning portion is connected to the lower side of the hard portion and is used to contact the surface to be cleaned when the scraper is in the second position.

19. The cleaning device according to claim 18, characterized in that The covering portion includes a floor brush cover body and a front cover body, the front cover body is arranged on the outside of the floor brush cover body, and an activity space for the scraper to move between the second position and the first position is defined between the inner surface of the front cover body and the outer surface of the floor brush cover body.

20. The cleaning device according to claim 19, characterized in that Both ends of the floor brush cover in the length direction are respectively formed with closing portions extending toward the activity space, and the two closing portions respectively close the two ends of the activity space in the length direction.

21. The cleaning device according to claim 1, wherein The height of the floor brush at the covering portion is smaller than the height of the floor brush at the rear side of the covering portion.

22. The cleaning device according to claim 19, characterized in that It also includes a flexible sealing strip, which is arranged at the front end of the floor brush cover and extends along the length direction of the floor brush cover; when the scraper is in the first position, the flexible sealing strip abuts against the rear surface of the flexible cleaning part, and the front area of ​​the upper end face of the flexible cleaning part abuts against the lower end face of the front cover.

23. A cleaning device, characterized in that: include: Floor brush body; a covering portion, mounted on the front side of the floor brush body, wherein the covering portion and the floor brush body define an accommodating cavity located on the front side of the floor brush body; A cleaning member, disposed in the accommodating cavity and configured to contact the surface to be cleaned; a scraper bar, provided on the covering portion and located on the front side of the cleaning member; a driving mechanism, in transmission cooperation with the scraper bar, for driving the scraper bar to move from a first position to a second position, wherein a gap exists between the scraper bar and the surface to be cleaned when the scraper bar is in the first position and the scraper bar contacts the surface to be cleaned when the scraper bar moves to the second position; A magnetic part and a first magnetic matching part, wherein the magnetic part is arranged on the scraper strip, and the first magnetic matching part is arranged on the covering part. There is a first magnetic force that interacts with each other between the magnetic part and the first magnetic matching part, and the first magnetic force acts on the scraper strip so that the scraper strip has a tendency to move toward the second position.

24. The cleaning device according to claim 23, characterized in that The driving mechanism is also used to drive the scraper to move from the second position to the first position; The cleaning device also includes: A second magnetic matching piece is provided on the covering portion. There is a second magnetic force that interacts with the magnetic piece and the second magnetic matching piece. The second magnetic force acts on the scraper strip so that the scraper strip tends to move toward the first position.

25. The cleaning device according to claim 24, characterized in that The first magnetic force and the second magnetic force are repulsive forces, and the first magnetic matching component is located on the upper side of the second magnetic matching component in the vertical direction.

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