Scraping strip, cleaning device and cleaning base station

Abstract

The utility model discloses a scraping strip, a cleaning device and a cleaning base station, relates to the technical field of cleaning equipment, and mainly aims to improve the cleaning effect of the cleaning device so as to improve the cleaning efficiency of the cleaning device. According to the main technical scheme, the scraping strip comprises an installation part which is used for being connected to the cleaning disc in a rotatable mode, and the installation part can rotate on the cleaning disc around the center point of the installation part; the scraping strip arm comprises a root part and an end part, the root part is connected with the mounting part, the end part is far away from the mounting part, and the scraping strip arm can be driven by the mounting part to rotate around the central point of the mounting part; the outer contour of the scraping bar arm between the root part and the end part is a straight line or an arc line; the included angle between the forward normal vector of the outer contour and the first ray passing through the midpoint of the outer contour is an obtuse angle; wherein the first ray is a ray from the central point of the mounting part to the end part; the outer contour is the contour of the side, making contact with to-be-cleaned matter in the cleaning disc firstly, of the scraping strip arm when the scraping strip arm rotates in the rotating direction.

Description

Technical Field

[0001] The utility model relates to the technical field of cleaning equipment, in particular to a scraper bar, a cleaning device and a cleaning base station. Background Art

[0002] With the development of technology, a variety of cleaning robots have emerged, freeing people from the tedious task of cleaning. The most representative of these cleaning robots is undoubtedly the household robot vacuum. These robots are becoming increasingly versatile, often capable of sweeping and mopping. To ensure these functions, they are often paired with a cleaning base station, which is responsible for charging, hydrating, and cleaning the robots.

[0003] The cleaning base station usually includes a cleaning device for wet cleaning of the cleaning robot. The cleaning device usually includes a cleaning disc and a scraper that rotates inside the cleaning disc. The cleaning disc is used to hold the sewage after wet cleaning. The scraper scrapes the cleaning disc when it rotates, and the sewage can be discharged into the sewage tank by centrifugal motion under the action of the scraper. The higher the speed of the scraper, the more conducive it is for the sewage to overcome the centripetal force and be discharged into the sewage tank, and the easier it is to dry the sewage in the cleaning disc. In the related art, since the higher the speed of the scraper, the greater the noise, in order to take into account the noise problem, the rotation speed of the scraper is usually not very fast, which will result in sewage remaining in the cleaning disc, resulting in dirt remaining on the cleaning disc after being dried by hot air, and the cleaning effect of the cleaning device is poor and the cleaning efficiency is low. Utility Model Content

[0004] In view of this, embodiments of the present invention provide a scraper, a cleaning device, and a cleaning base station, the main purpose of which is to improve the cleaning effect of the cleaning device, thereby improving the cleaning efficiency of the cleaning device.

[0005] In the first aspect, an embodiment of the present invention provides a scraper bar, comprising: a mounting portion, the mounting portion is used to be rotatably connected to the cleaning disc, and the mounting portion can rotate on the cleaning disc around the center point of the mounting portion; a scraper arm, the scraper arm comprises a root and an end portion, the root is connected to the mounting portion, and the end portion is away from the mounting portion, and the scraper arm can rotate around the center point of the mounting portion under the drive of the mounting portion; the distance from the center point of the mounting portion to the end portion is basically equal to the radius of the cleaning disc; the outer contour of the scraper arm between the root and the end portion is a straight line or an arc; the angle between the positive normal vector of the outer contour passing through the midpoint of the outer contour and the first ray is an obtuse angle; wherein the first ray is a ray pointing from the center point of the mounting portion to the end portion; the outer contour is the side of the scraper arm that first contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction. ; the scraper arm includes a first side and a second side, and if the scraper arm is a symmetrical figure, either the first side or the second side is the side that contacts first; if the scraper arm is an asymmetrical figure, the extension trajectory of the contour line of the first side has one intersection with the outer edge of the mounting portion, and the extension trajectory of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the first side is the side that contacts first; if the scraper arm is an asymmetrical figure, the extension trajectory of the contour line of the first side has two intersections with the outer edge of the mounting portion, and the extension trajectory of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the side with the larger corresponding split ratio is the side that contacts first; wherein, the extension trajectory of the contour line of one side of the scraper arm cuts the mounting portion into two parts, and the ratio of the area of ​​the larger part to the smaller part of the two parts is the split ratio corresponding to that side.

[0006] Furthermore, if the outer contour is a straight line, the obtuse angle is 95 degrees to 120 degrees.

[0007] Furthermore, the shape of the scraper arm is an axisymmetric shape, the outer contour and the inner contour of the scraper arm are symmetrical with respect to the axis of symmetry of the scraper arm, and the outer contour and the inner contour of the scraper arm are straight lines;

[0008] Alternatively, the shape of the scraper arm is a non-axisymmetric shape, and the outer contour and inner contour of the scraper arm are straight lines; the first angle is greater than the second angle, wherein the angle between the first ray and the ray pointing from the first intersection point of the root and the outer contour to the second intersection point of the end portion and the outer contour is the first angle; the angle between the first ray and the ray pointing from the third intersection point of the root and the inner contour to the fourth intersection point of the end portion and the inner contour is the second angle;

[0009] The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction.

[0010] Furthermore, if the outer contour is an arc, the angle between the first intersection point of the root and the outer contour and the second intersection point of the end and the outer contour and the first tangent line is 15 degrees to 45 degrees, and / or the angle between the first intersection point of the root and the outer contour and the second intersection point of the end and the outer contour and the second tangent line is 15 degrees to 45 degrees;

[0011] The first tangent line is a tangent line of the outer contour passing through the first intersection point; the second tangent line is a tangent line of the outer contour passing through the second intersection point.

[0012] Furthermore, the rotation direction of the mounting portion is opposite to the extension direction of the root portion along the outer contour toward the end portion.

[0013] Furthermore, the shape of the scraper arm is an axisymmetric shape, and the outer contour and inner contour of the scraper arm are symmetrical with respect to the axis of symmetry of the scraper arm; the outer contour and inner contour of the scraper arm are arcs;

[0014] Alternatively, the shape of the scraper arm is a non-axisymmetric shape, the outer contour and the inner contour of the scraper arm are arcs; the curvature of the inner contour is not greater than the curvature of the outer contour;

[0015] Alternatively, the scraper arm has a non-axisymmetric shape, the outer contour of the scraper arm is an arc, and the inner contour of the scraper arm is a straight line;

[0016] The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction.

[0017] Furthermore, the scraper strip further comprises:

[0018] An elastic portion wraps the outer contour and the inner contour of the scraper arm along the length direction of the scraper arm, and the lower edge of the elastic portion protrudes from the lower edge of the scraper arm.

[0019] Furthermore, a plurality of flexible protrusions are provided on at least one of the lower edge of the elastic portion wrapping the outer contour of the scraper arm and the lower edge of the elastic portion wrapping the inner contour of the scraper arm, and the plurality of flexible protrusions are arranged at intervals along the length direction of the scraper arm.

[0020] Furthermore, at least one of the elastic portion wrapping the outer contour of the scraper arm and the elastic portion wrapping the inner contour of the scraper arm protrudes from the end portion.

[0021] Furthermore, a plurality of mounting holes are provided on one of the scraper arm and the elastic portion, and a plurality of protrusions are provided on the other of the scraper arm and the elastic portion, and the protrusions are inserted into the corresponding mounting holes;

[0022] The plurality of mounting holes are arranged at intervals along the length direction of the scraper arm or the elastic portion;

[0023] A plurality of protrusions are arranged at intervals along the length direction of the scraper arm or the elastic portion.

[0024] In the second aspect, an embodiment of the utility model also provides a cleaning base station, which includes a shell body and the aforementioned scraper; a cleaning disc and a sewage trough are provided on the shell body; the mounting portion is rotatably arranged in the cleaning disc, and the mounting portion is used to drive the scraper arm to rotate around the center point of the mounting portion, so as to push the material to be cleaned in the cleaning disc to the sewage trough; the sewage trough is located on the rotation path of the scraper arm.

[0025] Furthermore, the cleaning device further comprises a driving member;

[0026] A boss is provided on the bottom wall of the cleaning tray, and a through hole is opened on the boss and passes through the bottom wall of the cleaning tray;

[0027] The mounting portion is in the shape of a cover, and the mounting portion is arranged to cover the outside of the boss;

[0028] The driving member extends into the through hole and is connected to the mounting portion. The driving member is used to drive the mounting portion to rotate.

[0029] Furthermore, a plurality of flexible protrusions are provided on at least one of the lower edge of the elastic portion wrapping the outer contour of the scraper arm and the lower edge of the elastic portion wrapping the inner contour of the scraper arm, and the plurality of flexible protrusions are arranged at intervals along the length direction of the scraper arm; the flexible protrusions of the elastic portion of the scraper are interference fit with the bottom wall of the cleaning tray;

[0030] and / or,

[0031] At least one of the elastic portion wrapping the outer contour of the scraper arm and the elastic portion wrapping the inner contour of the scraper arm protrudes from the end portion, and a portion of the elastic portion protruding from the end portion is interference fit with the side wall of the cleaning tray.

[0032] In a third aspect, an embodiment of the present invention further provides a cleaning base station, comprising the aforementioned cleaning device; or the aforementioned scraper. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The following drawings of the present invention are used as part of the embodiments of the present invention for understanding the present invention. The drawings show the embodiments of the present invention and their descriptions, and are used to explain the principles of the present invention.

[0034] In the attached figure:

[0035] Figure 1 A schematic structural diagram of a cleaning device provided by an embodiment of the present utility model at a first viewing angle;

[0036] Figure 2 A schematic structural diagram of a cleaning device provided by an embodiment of the present utility model at a second viewing angle;

[0037] Figure 3 A schematic structural diagram of a scraper provided by an embodiment of the present invention at one viewing angle;

[0038] Figure 4A A schematic structural diagram of a scraper provided by an embodiment of the present invention from another perspective;

[0039] Figure 4B A schematic structural diagram of a scraper provided by an embodiment of the present invention at another viewing angle showing the first ray and the direction of the forward normal vector;

[0040] Figure 5 A schematic structural diagram of a force analysis of the liquid pushing side of a scraper provided in an embodiment of the present utility model;

[0041] Figure 6 A schematic structural diagram of an angle between a line connecting a first intersection point and a second intersection point and a first tangent line, and an angle between a line connecting the first intersection point and the second intersection point and a second tangent line of a scraper provided by an embodiment of the present invention;

[0042] Figure 7A A schematic structural diagram of another scraper strip provided in an embodiment of the present utility model;

[0043] Figure 7B A schematic structural diagram showing the extension direction of the inner contour and the extension direction of the outer contour of another scraper provided in an embodiment of the present utility model;

[0044] Figure 8 A schematic structural diagram of another scraper provided by an embodiment of the present invention at a viewing angle;

[0045] Figure 9 A schematic structural diagram of another scraper provided by an embodiment of the present invention is shown in another perspective and shows the direction of the first ray and the forward normal vector;

[0046] Figure 10A schematic structural diagram of a force analysis on the liquid pushing side of another scraper provided in an embodiment of the present utility model;

[0047] Figure 11 A schematic structural diagram of another scraper strip provided in an embodiment of the present utility model;

[0048] Figure 12 A schematic structural diagram of another scraper strip provided in an embodiment of the present utility model.

[0049] Description of reference numerals:

[0050] 1-scraper arm; 11-outer contour; 12-inner contour; 13-root; 14-end; 111-first intersection; 112-second intersection; 12-rotation center; 2-elastic part; 21-tail; 3-mounting part; 100-housing; 101-cleaning disc; 1011-boss; 1012-through hole; 102-sewage tank. DETAILED DESCRIPTION

[0051] In the following description, numerous specific details are provided to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features known in the art are not described to avoid confusion with the present invention.

[0052] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit exemplary embodiments according to the present invention. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, wholes, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, wholes, steps, operations, elements, components and / or combinations thereof.

[0053] Now, exemplary embodiments of the present invention will be described in more detail with reference to the accompanying drawings. However, these exemplary embodiments may be implemented in a variety of different forms and should not be construed as being limited to the embodiments described herein. It should be understood that these embodiments are provided to make the disclosure of the present invention thorough and complete and to fully convey the concepts of these exemplary embodiments to those of ordinary skill in the art.

[0054] The higher the scraper bar speed, the more it helps the wastewater overcome centripetal force and drain into the wastewater tank, making it easier to drain the wastewater from the cleaning pan. In related art, because higher scraper bar speeds increase noise, to mitigate noise issues, the scraper bar's rotation speed is typically slow, resulting in residual wastewater in the cleaning pan. This can also leave dirt on the cleaning pan after hot air drying, resulting in poor cleaning performance and low cleaning efficiency.

[0055] An embodiment of the present utility model provides a scraper bar, which is arranged on a base station where a cleaning robot is docked. The cleaning robot can be a self-propelled cleaning robot or other types of cleaning robots that meet the requirements. Specifically, the cleaning robot is a sweeping robot, which is provided with a wet cleaning module. The base station corresponding to the sweeping robot is provided with a cleaning device, which includes cleaning ribs, a cleaning disc, and a sewage tank. After the sweeping robot docks at the base station, the wet cleaning module rotates and generates friction with the cleaning ribs, causing the sewage and dirt on the wet cleaning module to fall into the cleaning disc below the cleaning ribs. The cleaning disc is connected to the sewage tank, and the scraper bar rotates relative to the cleaning disc, so that the sewage and dirt on the cleaning disc are recovered into the sewage tank.

[0056] The inventor of the present application has found through extensive experiments and research that, in addition to the rotational speed of the scraper arm, the shape of the scraper arm and the rotational direction of the scraper arm can also affect the water pushing effect of the scraper arm, thereby affecting the cleaning efficiency of the scraper arm.

[0057] like Figure 1 To Figure 4, Figure 8 and Figure 9 As shown, the scraper bar includes a mounting portion 3, which is used to be rotatably connected to the cleaning disk, and the mounting portion 3 can rotate on the cleaning disk around the center point of the mounting portion 3; the scraper bar arm 1 includes a root portion 13 and an end portion 14, the root portion 13 is connected to the mounting portion 3, and the end portion 14 is away from the mounting portion 3, and the scraper bar arm 1 can rotate around the center point of the mounting portion 3 under the drive of the mounting portion 3.

[0058] The scraper arm 1 and the mounting portion 3 may be integrally formed, or may be formed separately and then joined together by laminating or the like, so that the scraper arm 1 can rotate around the center point of the mounting portion 3 driven by the mounting portion 3 .

[0059] It can be understood that the scraper arm includes a first side and a second side. When the scraper arm rotates, one of the first side and the second side first contacts the material to be cleaned in the cleaning disk, and the other side later contacts the material to be cleaned in the cleaning disk. In the embodiment of the present application, the side that first contacts the material to be cleaned in the cleaning disk is used as the outer side of the scraper arm, and the contour of the outer side of the scraper arm is used as the outer contour of the scraper arm. Correspondingly, the contour of the inner side of the scraper arm is the inner contour of the scraper arm.

[0060] It is understandable that the scraper arm 1 has a certain thickness. Therefore, the outer contour between the root 13 and the end 14 of the scraper arm 1 is a surface, that is, the outer side surface of the scraper arm 1. However, since the thickness of the scraper arm 1 is small, that is, the scraper arm 1 is relatively thin, the thickness of the scraper arm 1 can be ignored here, and the outer contour and inner contour of the scraper arm 1 are regarded as contour lines.

[0061] It is understandable that which side of the first side and the second side is determined as the outer side of the scraper arm depends on the shapes of the first side and the second side, that is, the rotation direction of the scraper arm is determined according to the shapes of the first side and the second side of the scraper arm.

[0062] If the scraper arm is a symmetrical figure, either the first side or the second side is the side that contacts first. The rotation direction of the scraper arm is counterclockwise or anticlockwise.

[0063] If the scraper arm is an asymmetrical shape, the extension track of the contour line of the first side has one intersection with the outer edge of the mounting portion, and the extension track of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the first side is the side that contacts first. Figure 7A As shown, the extension track of the contour line of the first side 11 is tangent to the outer edge of the mounting portion and has one intersection point, and the extension track of the contour line of the second side 12 has two intersection points with the outer edge of the mounting portion, and the first side 11 is the outer side. Figure 7A The rotation direction of the scraper arm is shown as counterclockwise because when the scraper arm rotates counterclockwise, the first side 11 is the side that first contacts the material to be cleaned. If the scraper arm rotates clockwise, the second side 12 is the side that first contacts the material to be cleaned.

[0064] If the scraper arm is an asymmetrical figure, the extension track of the contour line of the first side has two intersections with the outer edge of the mounting portion, and the extension track of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the side with the larger split ratio is the side that contacts first; wherein, the extension track of the contour line of one side of the scraper arm cuts the mounting portion into two parts, and the ratio of the area of ​​the larger part to the smaller part of the two parts is the split ratio corresponding to the side. It can be understood that if the areas of the two parts are equal, the split ratio is 1. Figure 7B As shown, the extension trajectory of the contour line of the first side 11 and the extension trajectory of the contour line of the second side 12 have two intersections with the outer edge of the mounting portion. The extension trajectory of the contour line of the second side 12 divides the mounting portion into two parts with substantially equal areas, with a division ratio of 1; the extension trajectory of the contour line of the first side 11 divides the mounting portion into two parts with a large difference in area, with a division ratio greater than 1. Therefore, the first side is the side that first contacts the material to be cleaned. Figure 7B The wiper arm is shown with the direction of rotation being counterclockwise.

[0065] The shape of the scraper arm is described below. The outer contour 11 of the scraper arm 1 between the root 13 and the end 14 is a straight line or an arc. The outer contour of the scraper arm between the root and the end is a straight line or an arc. The angle between the normal vector of the outer contour passing through the midpoint of the outer contour and the first ray is an obtuse angle. The first ray is a ray pointing from the center point of the mounting portion 3 to the end 14. If the outer contour 11 is an arc, the angle between the normal vector of the outer contour and the first ray is an obtuse angle.

[0066] If the outer contour of the scraper arm is an arc, connect the two end points of the outer contour to obtain a line segment between the end points. The ray passing through the midpoint of the line segment, perpendicular to the line segment and pointing to the center of the circle where the arc is located is the positive normal vector of the outer contour. Figure 4B As shown, Figure 4B The two dotted lines in are respectively the first ray and the forward normal vector of the outer contour, and the angle between them is an obtuse angle. That is to say, if the outer contour 11 of the scraper arm 1 is an arc, then the outer contour 11 is an arc convex toward the rotation direction of the scraper arm.

[0067] When the outer contour 11 is an outwardly convex arc, as shown in FIG. Figure 5 As shown, a force analysis is performed on a point on the outer contour 11. The force exerted by the scraper arm 1 on the liquid at this point is F (illustratively, F is in the opposite direction of the positive normal vector), F1 is the circumferential component of F in the rotation direction of the scraper arm 1 (the direction of F1 is the tangent of the rotation trajectory of the point passing through the point), F2 is the radial component of F in the rotation direction of the scraper arm 1 (the direction of F2 is the direction of the line connecting the center point of the mounting portion and the point), and α is the angle between F1 and F. Therefore, F2 = F1tanα. Among them, F2 is the force that swings the liquid in the radial direction of the rotation direction of the scraper arm 1.

[0068] Assuming the shape of outer profile 11 is the only variable, and since parameters such as the torque of the drive element (e.g., a motor) that drives wiper arm 1 are fixed, F1 remains constant. Changing the shape of outer profile 11 will alter the magnitude of angle α. For example, the more outwardly convex outer profile 11 is, the larger angle α is. That is, the greater the curvature of outer profile 11, the larger angle α is. From F2 = F1 tan α, we can see that the larger the angle α, the larger the value of F2, and the better the drainage effect of wiper arm 1.

[0069] Therefore, when the rotation speed of the scraper arm 1 remains the same, making the shape of the outer contour 11 an outwardly convex arc can increase the liquid-throwing force in the rotation direction of the scraper arm 1, thereby facilitating the outward throwing of the material to be cleaned in the liquid under the action of the radial component force, thereby increasing the discharge volume of the scraper arm 1, thereby reducing the residual amount of the material to be cleaned in the cleaning disk, improving the cleaning effect of the cleaning device, and thus improving the cleaning efficiency of the cleaning device.

[0070] If the outer contour of the scraper arm is a straight line (actually a line segment), the ray passing through the midpoint of the outer contour, perpendicular to the outer contour and pointing to the center point of the mounting portion is the positive normal vector of the outer contour. It is understandable that the ray pointing to the center point of the mounting portion here does not mean that the ray passes through the center point. There are two rays passing through the midpoint of the outer contour and perpendicular to the outer contour, one of which extends in the direction close to the center point and the other extends in the direction away from the center point. The ray pointing to the center point of the mounting portion is the ray extending in the direction close to the center point. Figure 9 As shown, Figure 9 The two dotted lines are the first ray and the normal vector of the outer contour, and the angle between them is an obtuse angle. That is, if the outer contour 11 of the scraper arm 1 is a straight line, the outer contour is a straight line that is inward along the direction away from the mounting portion.

[0071] In some embodiments, when the outer contour 11 of the scraper arm 1 is a straight line, as shown in FIG. Figure 10 As shown, a force analysis is performed on a certain point of the outer contour 11. The force exerted by the scraper arm 1 on the liquid at this point is F′ (for example, the direction of F′ is opposite to the direction of the positive normal vector), F1′ is the circumferential component of F′ in the rotation direction of the scraper arm 1 (the direction of F1′ is the tangent of the rotation trajectory of the point passing through the point), F2′ is the radial component of F′ in the rotation direction of the scraper arm 1 (the direction of F2 is the direction of the line connecting the center point of the mounting portion and the point), β is the angle between F1′ and F′, and thus, F2′=F1′tanβ. Among them, the effect of F2′ is the force that swings the liquid radially outward along the rotation direction of the scraper arm 1. γ is the angle formed between the straight line where the outer contour 11 is located and the first ray. The first ray is the ray pointing from the center point of the mounting portion 3 to the end 14.

[0072] As the outer contour of the scraper arm 1 changes, the angle γ will also change. For example, the larger the angle γ, the smaller the length of the scraper arm 1. Assuming that the angle γ is the only variable, since the torque and other parameters of the driving member (such as the motor) that drives the scraper arm 1 to rotate are fixed, F1′ remains unchanged. Figure 10 It can be seen that β>γ, so the larger the angle γ, the larger the angle β; and from F2′=F1′tanβ, it can be seen that the larger the angle β, the larger the value of F2′, and the better the effect of the wiper arm 1 in discharging liquid outwards.

[0073] When the rotation speed of the scraper arm 1 remains the same, the shape of the outer contour 11 is a straight line that is retracted inward in the direction away from the mounting portion, which can increase the force exerted on the liquid in the rotation direction of the scraper arm 1, thereby facilitating the outward ejection of the substance to be cleaned in the liquid under the action of the radial component force, thereby increasing the discharge volume of the scraper arm 1, thereby reducing the residual amount of dirt in the cleaning disk, improving the cleaning effect of the cleaning device, and thus improving the cleaning efficiency of the cleaning device.

[0074] The scraper provided in the embodiment of the present invention can increase the force of swinging the liquid in the radial direction along the rotation direction of the scraper arm 1 due to the special shape setting of the scraper arm and the selection of the rotation direction of the scraper arm, compared with the curve concave inward toward the rotation direction of the scraper arm, thereby facilitating the material to be cleaned in the liquid to be thrown out outward under the action of the radial component force, so as to reduce the residual amount of the material to be cleaned in the cleaning disk, improve the cleaning effect of the cleaning device, and thus improve the cleaning efficiency of the cleaning device.

[0075] In some embodiments, as shown in FIG4 , the outer contour of the mounting portion 3 is circular. This can evenly distribute the forces acting on the mounting portion 3 in all directions during its rotation, making the mounting portion 3 rotate more smoothly, thereby improving the overall rotation stability of the scraper strip and increasing its durability and service life.

[0076] In some embodiments, the outer contour of the mounting portion 3 is circular; the extension trajectory of the outer contour has one or two intersections with the outer edge of the mounting portion.

[0077] When the extension trajectory of the outer contour 11 of the scraper arm intersects the outer edge of the mounting portion, the circle containing the outer contour 11 and the circle of the outer edge of the mounting portion 3 are inscribed in the intersection. This structural arrangement can ensure a smooth connection between the outer edge of the circular mounting portion 3 and the outer contour 11 of the scraper arm 1, reducing dead angles and helping to maintain the cleanliness of the scraper itself.

[0078] In some other embodiments, the extension trajectory of the outer contour 11 has two intersections with the outer edge of the mounting portion, and the length of the inferior arc between the two intersections is less than 1 / 5 of the circumference of the outer edge of the mounting portion 3. In other words, the circle where the outer contour 11 is located and the circle where the outer edge of the mounting portion 3 is located can also intersect, so that the two have two intersections. In this case, in order to ensure that the scraper can work better, the length of the inferior arc between the two intersections can be less than 1 / 5 of the circumference of the circle where the mounting portion 3 is located, thereby minimizing the dead angle of the outer edge of the scraper and ensuring that the scraper can maintain its own cleanliness. At the same time, it is also necessary to ensure that the scraper arm 1 has sufficient water-pushing length to ensure the cleaning effect of the scraper on the cleaning disk.

[0079] When the outer contour 11 of the scraper arm 1 is a straight line, the obtuse angle between the forward normal vector of the outer contour passing through the midpoint of the outer contour and the first ray is 95 degrees to 120 degrees. In this way, the γ angle can be guaranteed to be 5 degrees to 30 degrees, thereby ensuring that the scraper arm 1 has a certain length and has a better drainage effect.

[0080] The outer contour 11 of the scraper arm 1 is mainly used to exert force on the liquid to throw out the material to be cleaned. The outer contour 11 has a greater impact on the cleaning efficiency, while the inner contour 12 has a smaller impact on the cleaning efficiency. The inner contour 12 has a larger design space. Therefore, when the outer contour line is determined, the inner contour line can have a variety of designs. For example, when the outer contour 11 of the scraper arm 1 is a straight line, further, if the shape of the scraper arm is an axisymmetric shape, the outer contour and inner contour of the scraper arm are symmetrical with respect to the symmetry axis of the scraper arm, and the outer contour and inner contour of the scraper arm are straight lines (such as Figure 8 、 Figure 9 、 Figure 10 As shown); or, the shape of the scraper arm is a non-axisymmetric shape, and the outer contour and inner contour of the scraper arm are straight lines; the first angle is greater than the second angle (as shown Figure 11 (as shown), wherein the angle between the ray extending from the first intersection of the root and the outer contour to the second intersection of the end and the outer contour and the first ray is the first angle; the angle between the ray extending from the third intersection of the root and the inner contour to the fourth intersection of the end and the inner contour and the first ray is the second angle. It is understood that the first angle is an acute angle, and the second angle is an acute angle or 0 degrees. The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the direction of rotation.

[0081] In the case where the outer contour 11 of the scraper arm 1 is an arc, in order to ensure a reliable cleaning effect of the scraper arm 1, the curvature of the outer contour 11 cannot be too large. Figure 6 In some embodiments, when the outer contour 11 of the scraper arm 1 is an arc, the angle δ1 between the line between the first intersection point of the root and the outer contour and the second intersection point of the end portion and the outer contour and the first tangent is 15 degrees to 45 degrees, and / or the angle δ2 between the line between the first intersection point of the root and the outer contour and the second intersection point of the end portion and the outer contour and the second tangent is 15 degrees to 45 degrees; wherein the first tangent is a tangent to the outer contour passing through the first intersection point; the second tangent is a tangent to the outer contour passing through the second intersection point.

[0082] By limiting δ1 and / or δ2 within the range of 15 to 45 degrees, and further limiting it within the range of 20 to 40 degrees, the curvature of the outer contour 11 can be avoided from being too large; at the same time, the radial component of the rotation direction of the scraper arm 1 can be better increased, thereby facilitating the external cleaning material in the liquid to be thrown outward under the action of the radial component, thereby increasing the discharge volume of the scraper arm 1, thereby reducing the residual amount of dirt in the cleaning disk, improving the cleaning effect of the cleaning device, and thus improving the cleaning efficiency of the cleaning device.

[0083] As mentioned above, the inner contour 12 has a large design space. Therefore, when the outer contour line is determined, the inner contour line can have multiple designs. For example, when the outer contour 11 of the scraper arm 1 is an arc, in some embodiments, the shape of the scraper arm is an axisymmetric shape, and the outer contour and the inner contour of the scraper arm are symmetrical with respect to the symmetry axis of the scraper arm, and the outer contour and the inner contour of the scraper arm are both arcs (such as Figure 3 、 Figure 4A 、 Figure 4B 、 Figure 5 、 Figure 6 As shown). In some embodiments, the shape of the scraper arm is a non-axisymmetric shape, and the outer contour and inner contour of the scraper arm are both arcs, wherein the curvature of the inner contour is not greater than the curvature of the outer contour. For example, both arcs are arcs that are convex along the rotation direction of the scraper arm, and the curvature of the inner contour is not greater than, that is, less than or equal to, the curvature of the outer contour. When the curvature of the inner contour is equal to the curvature of the outer contour, the length of the end of the scraper arm between the inner contour and the outer contour is the same as the length of the root of the scraper arm between the inner contour and the outer contour; when the curvature of the inner contour is less than the curvature of the outer contour, the length of the end of the scraper arm between the inner contour and the outer contour is less than the length of the root of the scraper arm between the inner contour and the outer contour (as shown in FIG. Figure 12 In some embodiments, the shape of the scraper arm is a non-axisymmetric shape, the outer contour of the scraper arm is an arc, and the inner contour of the scraper arm is a straight line (as shown). Figure 7A 、 Figure 7B The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction.

[0084] Regardless of whether the outer contour 11 of the scraper arm 1 is a straight line or an arc, when the scraper arm is non-axisymmetric, the overall volume of the scraper is smaller, so that the area it covers on the cleaning disc is smaller, which can reduce the possibility of dirt and grime accumulating between the scraper arm 1 and the cleaning disc, thereby better improving the cleaning effect of the scraper on the cleaning disc; when the scraper arm is axisymmetric, the scraper does not need to limit the rotation direction of the scraper arm 1 during operation. As long as the rotation of the scraper arm 1 is controlled, it is possible to achieve the outer contour 11 first contacting the material to be cleaned, thereby realizing the cleaning function of the scraper, making the assembly and use of the scraper more convenient. Furthermore, for the case where two cleaning discs in the cleaning base station share a sewage tank, when the scraper arm is axisymmetric, the scrapers of the left and right cleaning discs can be mixed and used by simply rotating them in opposite directions, making assembly simpler.

[0085] In summary, once the size and shape of the outer profile 11 of the scraper arm 1 are determined, adjusting the inner profile 12 can create scrapers of varying widths and shapes. The appropriate size and shape of the inner profile 12 can be selected based on a comprehensive consideration of factors such as manufacturing difficulty, contact area with the cleaning disc, the inherent water retention potential of the scraper structure, and sufficient strength and rotational stability. In specific implementation, the above-mentioned embodiments can be selected based on actual needs.

[0086] In some embodiments, see Figure 3 or Figure 8 The scraper strip may further include an elastic portion 2 , which is wrapped around the outer contour 11 and the inner contour 12 of the scraper strip arm 1 along the length direction of the scraper strip arm 1 , and the lower edge of the elastic portion 2 protrudes from the lower edge of the scraper strip arm 1 .

[0087] When the scraper arm 1 rotates along with the mounting portion 3, since the lower edge of the elastic portion 2 protrudes from the lower edge of the scraper arm 1, the elastic portion 2 can contact the bottom of the cleaning disc, so that the scraper and the bottom of the cleaning disc have an interference fit. As a result, the elastic portion 2 is deformed when contacting the bottom of the cleaning disc to ensure sufficient contact between the scraper and the cleaning disc, thereby ensuring the wiping effect of the scraper arm 1, avoiding damage to the structural parts, and extending the service life of the cleaning device.

[0088] Specifically, the elastic part 2 can be made of a flexible material that can be deformed, such as soft glue, silicone, etc.

[0089] In some embodiments, a plurality of flexible protrusions are provided on at least one of the lower edge of the elastic portion 2 located on the outer contour 11 of the scraper arm 1 and the lower edge of the elastic portion 2 located on the inner contour 12 of the scraper arm 1 , and the plurality of flexible protrusions are arranged at intervals along the length direction of the scraper arm 1 .

[0090] Among them, the flexible protrusion can contact the bottom of the cleaning disc, so that the flexible protrusion and the elastic part 2 are surrounded by a diversion cavity, so that the sewage can flow out smoothly from the inside of the scraper under the guidance of the diversion cavity, preventing the sewage from accumulating between the two lower edges of the elastic part 2 of the scraper arm 1, thereby preventing sewage from accumulating inside the scraper.

[0091] In some embodiments, see Figure 3 or Figure 8 At least one of the tail portion 21 of the elastic portion 2 located on the outer contour 11 of the wiper arm 1 and the tail portion 21 of the elastic portion 2 located on the inner contour 12 of the wiper arm 1 protrudes from the end portion 14 .

[0092] When the scraper arm 1 rotates with the mounting portion 3, the tail portion 21 of the elastic portion 2 protrudes from the end portion 14 of the scraper arm 1. Therefore, the elastic portion 2 can contact the side of the cleaning disc, so that the scraper and the side of the cleaning disc are interference-fitted. As a result, the elastic portion 2 is interference-fitted with both the bottom and the side of the cleaning disc and deforms, thereby ensuring more complete contact between the scraper and the cleaning disc. This can better ensure the wiping effect of the scraper arm 1 and better avoid damage to the structural components, thereby better extending the service life of the cleaning device. In addition, when the two scraper arms 1 located in the two cleaning discs interfere with each other and collide, the elastic portion 2 can prevent the scraper arms 1 from being damaged.

[0093] In some embodiments, one of the scraper arm 1 and the elastic part 2 may be provided with multiple mounting holes, and the other of the scraper arm 1 and the elastic part 2 may be provided with multiple protrusions, which are inserted into the corresponding mounting holes; the multiple mounting holes are arranged at intervals along the length direction of the scraper arm 1 or the elastic part 2; and the multiple protrusions are arranged at intervals along the length direction of the scraper arm 1 or the elastic part 2.

[0094] The protrusion is inserted into the corresponding mounting hole, so that the elastic part 2 is detachably connected to the scraper arm 1. When the elastic part 2 needs to be cleaned or maintained, the elastic part 2 and the scraper arm 1 can be quickly disassembled and assembled, thereby realizing rapid replacement of the elastic part 2, which is simple, convenient and fast.

[0095] like Figure 1 and Figure 2 As shown, an embodiment of the present invention further provides a cleaning device comprising a housing 100 and the aforementioned scraper bar. The housing 100 is provided with a first cleaning tray and a second cleaning tray. A mounting portion 3 is rotatably disposed within the first and second cleaning trays, and the mounting portion 3 is configured to drive the scraper bar arm 1 to rotate about the center point of the mounting portion 3. The first and second cleaning trays are connected to a sewage trough, with at least a portion of the sewage trough located within the rotational path of the scraper bar arm 1 within the cleaning trays. Therefore, during rotation, the scraper bar can sweep material to be cleaned from the cleaning trays into the sewage trough, achieving sewage discharge.

[0096] Since the cleaning device provided by the embodiment of the present invention includes the aforementioned scraping bar, the cleaning device has all the beneficial effects of the scraping bar, which will not be described in detail here.

[0097] It should be noted that the implementation and working principle of the scraper involved in this embodiment can be found in the corresponding content of the above embodiment, and will not be repeated here.

[0098] In some embodiments, see Figure 1A boss 1011 may be provided on the bottom wall of the cleaning tray 101, and a through hole 1012 is provided on the boss 1011 to pass through the bottom wall of the cleaning tray 101; the mounting portion 3 is in the shape of a cover, and the mounting portion 3 is covered on the outside of the boss 1011; the driving member extends into the through hole 1012 and is connected to the mounting portion 3, and the driving member is used to drive the mounting portion 3 to rotate.

[0099] Among them, the mounting part 3 can be snap-connected with the driving part so that the mounting part 3 can be driven to rotate when the driving part rotates; at the same time, the mounting part 3 is snap-connected with the driving part, which facilitates the disassembly and replacement of the mounting part 3, so as to regularly maintain the cleaning disc and the scraper to prevent dirt from accumulating on the cleaning disc and the scraper and generating bacteria, so as to ensure the cleanliness of the cleaning disc and the scraper.

[0100] In the above embodiment, after the driving member that drives the mounting portion 3 to rotate is connected to the driving device, it extends out from the through hole 1012 of the boss 1011, and the mounting portion 3 is snapped onto the boss 1011 to position the mounting portion 3 through the boss 1011. The first clamping member on the mounting portion and the second clamping member on the driving member are clamped and fixed to make the mounting portion 3 stably connected to the driving member, so that under the drive of the driving member, the mounting portion 3 can rotate relative to the cleaning disk to scrape the sewage on the cleaning disk.

[0101] In some embodiments, the flexible protrusion of the elastic portion 2 of the scraper bar has an interference fit with the bottom wall of the cleaning disk 101, and the tail portion 21 of the elastic portion 2 of the scraper bar has an interference fit with the side wall of the cleaning disk 101. As a result, the elastic portion 2 has an interference fit with both the bottom and the side of the cleaning disk, causing deformation, thereby ensuring more complete contact between the scraper bar and the cleaning disk. This not only better ensures the wiping effect of the scraper bar arm 1, but also better prevents damage to structural components, thereby further extending the service life of the cleaning device.

[0102] In some embodiments, there can be multiple cleaning trays 101, which are interconnected and all connected to the sewage tank 102. In other words, there can be multiple cleaning trays, for example, two. A scraper bar is installed in each cleaning tray, allowing multiple scrapers to perform cleaning operations simultaneously, thereby further improving the cleaning effect of the cleaning device.

[0103] An embodiment of the present invention further provides a cleaning base station, comprising the aforementioned cleaning device or the aforementioned scraper.

[0104] The cleaning base station provided by the embodiment of the present invention includes the aforementioned cleaning device or scraper. Therefore, the cleaning base station has all the beneficial effects of the scraper, which will not be described in detail here.

[0105] It should be noted that the implementation and working principle of the scraper involved in this embodiment can be found in the corresponding content of the above embodiment, and will not be repeated here.

[0106] The present invention has been described through the above embodiments. However, it should be understood that the above embodiments are for illustrative and illustrative purposes only and are not intended to limit the present invention to the described embodiments. Furthermore, those skilled in the art will appreciate that the present invention is not limited to the above embodiments and that various variations and modifications may be made based on the teachings of the present invention, all of which fall within the scope of the present invention. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. A scraper strip, characterized in that: include: A mounting portion, the mounting portion being rotatably connected to the cleaning disk, the mounting portion being capable of rotating on the cleaning disk around a center point of the mounting portion; A scraper arm, the scraper arm comprising a root portion and an end portion, the root portion being connected to the mounting portion, the end portion being away from the mounting portion, and the scraper arm being capable of rotating around a center point of the mounting portion under the drive of the mounting portion; The outer contour of the scraper arm between the root and the end is a straight line or an arc; the angle between the forward normal vector of the outer contour passing through the midpoint of the outer contour and the first ray is an obtuse angle; Wherein, the first ray is a ray from the center point of the mounting portion to the end portion; The outer contour is the contour of the side of the scraper arm that first contacts the material to be cleaned in the cleaning disk when the scraper arm rotates in the rotation direction; the scraper arm includes a first side and a second side, and if the scraper arm is a symmetrical figure, either the first side and the second side is the side that contacts first; if the scraper arm is an asymmetrical figure, the extension trajectory of the contour line of the first side has one intersection with the outer edge of the mounting portion and the extension trajectory of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the first side is the side that contacts first; if the scraper arm is an asymmetrical figure, the extension trajectory of the contour line of the first side has two intersections with the outer edge of the mounting portion and the extension trajectory of the contour line of the second side has two intersections with the outer edge of the mounting portion, then the side with the larger corresponding segmentation ratio is the side that contacts first; wherein the extension trajectory of the contour line of one side of the scraper arm cuts the mounting portion into two parts, and the ratio of the area of ​​the larger part to the smaller part of the two parts is the segmentation ratio corresponding to that side.

2. The wiper strip according to claim 1, characterized in that If the outer contour is a straight line, the obtuse angle is 95 degrees to 120 degrees.

3. The wiper strip according to claim 2, characterized in that The shape of the scraper arm is an axisymmetric shape, the outer contour and the inner contour of the scraper arm are symmetrical with respect to the axis of symmetry of the scraper arm, and the outer contour and the inner contour of the scraper arm are straight lines; Alternatively, the shape of the scraper arm is a non-axisymmetric shape, and the outer contour and inner contour of the scraper arm are straight lines; the first angle is greater than the second angle, wherein the angle between the first ray and the ray pointing from the first intersection point of the root and the outer contour to the second intersection point of the end portion and the outer contour is the first angle; the angle between the first ray and the ray pointing from the third intersection point of the root and the inner contour to the fourth intersection point of the end portion and the inner contour is the second angle; The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction.

4. The wiper strip according to claim 1, wherein If the outer contour is an arc, the angle between the first intersection point of the root portion and the outer contour and the second intersection point of the end portion and the outer contour and the first tangent line is 15 degrees to 45 degrees, and / or the angle between the first intersection point of the root portion and the outer contour and the second intersection point of the end portion and the outer contour and the second tangent line is 15 degrees to 45 degrees; The first tangent line is a tangent line of the outer contour passing through the first intersection point; the second tangent line is a tangent line of the outer contour passing through the second intersection point.

5. The wiper strip according to claim 4, characterized in that The rotation direction of the mounting portion is opposite to the extension direction of the root portion along the outer contour toward the end portion.

6. The wiper strip according to claim 5, characterized in that The shape of the scraper arm is an axisymmetric shape, and the outer contour and inner contour of the scraper arm are symmetrical with respect to the axis of symmetry of the scraper arm; the outer contour and inner contour of the scraper arm are arcs; Alternatively, the shape of the scraper arm is a non-axisymmetric shape, the outer contour and the inner contour of the scraper arm are arcs; the curvature of the inner contour is not greater than the curvature of the outer contour; Alternatively, the scraper arm has a non-axisymmetric shape, the outer contour of the scraper arm is an arc, and the inner contour of the scraper arm is a straight line; The inner contour is the contour of the side of the scraper arm that contacts the material to be cleaned in the cleaning disc when the scraper arm rotates in the rotation direction.

7. The wiper strip according to any one of claims 1 to 6, characterized in that Also includes: An elastic portion wraps the outer contour and the inner contour of the scraper arm along the length direction of the scraper arm, and the lower edge of the elastic portion protrudes from the lower edge of the scraper arm.

8. The wiper strip according to claim 7, characterized in that A plurality of flexible protrusions are provided on at least one of the lower edge of the elastic portion wrapping the outer contour of the scraper arm and the lower edge of the elastic portion wrapping the inner contour of the scraper arm. The plurality of flexible protrusions are arranged at intervals along the length direction of the scraper arm.

9. The wiper strip according to claim 7, characterized in that At least one of the elastic portion wrapping the outer contour of the scraper arm and the elastic portion wrapping the inner contour of the scraper arm protrudes from the end portion.

10. The wiper strip according to claim 7, characterized in that A plurality of mounting holes are formed on one of the scraper arm and the elastic portion, and a plurality of protrusions are formed on the other of the scraper arm and the elastic portion, and the protrusions are inserted into the corresponding mounting holes; The plurality of mounting holes are arranged at intervals along the length direction of the scraper arm or the elastic portion; A plurality of protrusions are arranged at intervals along the length direction of the scraper arm or the elastic portion.

11. A cleaning device, characterized in that: include: A housing and a wiper strip according to any one of claims 1 to 10; The housing is provided with a cleaning tray and a sewage tank; The mounting portion is rotatably disposed in the cleaning tray, and is used to drive the scraper arm to rotate around the center point of the mounting portion to push the material to be cleaned in the cleaning tray to the sewage trough; the sewage trough is located on the rotation path of the scraper arm.

12. The cleaning device according to claim 11, characterized in that The cleaning device further includes a driving member; A boss is provided on the bottom wall of the cleaning tray, and a through hole is opened on the boss and passes through the bottom wall of the cleaning tray; The mounting portion is in the shape of a cover, and the mounting portion is arranged to cover the outside of the boss; The driving member extends into the through hole and is connected to the mounting portion. The driving member is used to drive the mounting portion to rotate.

13. The cleaning device according to claim 11, characterized in that A plurality of flexible protrusions are provided on at least one of the lower edge of the elastic portion wrapping the outer contour of the scraper arm and the lower edge of the elastic portion wrapping the inner contour of the scraper arm, and the plurality of flexible protrusions are arranged at intervals along the length direction of the scraper arm; the flexible protrusions of the elastic portion of the scraper are interference fit with the bottom wall of the cleaning tray; and / or, At least one of the elastic portion wrapping the outer contour of the scraper arm and the elastic portion wrapping the inner contour of the scraper arm protrudes from the end portion, and a portion of the elastic portion protruding from the end portion is interference fit with the side wall of the cleaning tray.

14. A cleaning base station, characterized in that: include: The cleaning device according to any one of claims 11 to 13; Or a scraper strip as claimed in any one of claims 1 to 10.

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