Self-moving type surface cleaning robot

Abstract

The utility model provides a self-moving type surface cleaning robot. The self-moving type surface cleaning robot comprises a shell assembly and a cleaning assembly. The cleaning assembly comprises a shell assembly, a cleaning part, a second driving motor, an adjusting mechanism and a damping part. The cleaning part is used for performing power cleaning on the to-be-cleaned surface; the second driving motor is in power connection with the cleaning part, so that the cleaning part can rotate around the rotating shaft on the shell assembly; the adjusting mechanism is connected with the shell assembly and the cleaning component to respond to the driving force of the second driving motor, so that the cleaning component moves between a descending position and an ascending position relative to the shell assembly, and the cleaning component is closer to the shell assembly than the descending position at the ascending position; the adjusting mechanism is located between the shell assembly and the adjusting mechanism; in the process that the cleaning component is switched between the descending position and the ascending position, the damping piece provides first torque with the rotating shaft as the center, the adjusting mechanism provides second torque with the rotating shaft as the center, and the first torque is larger than the second torque.

Description

Technical Field

[0001] The present invention relates to a self-propelled surface cleaning robot, belonging to the technical field of household cleaning equipment. Background Art

[0002] This section merely provides background information related to the present disclosure and is not necessarily prior art.

[0003] Household vacuum cleaning appliances are used to clean rooms by sucking up particles such as dust from the room's floor.

[0004] Prior art household vacuum cleaning devices may include a mop to which a cleaning liquid can be applied, so that when the mop rotates, it can wet clean the surface to be cleaned to improve the cleaning effect of the surface to be cleaned.

[0005] In order to prevent the mop from colliding with obstacles when the household vacuum cleaning device is moving, the mop of the household vacuum cleaning device in the prior art can be adjusted in height. This adjustment also enables the mop to clean different floor materials.

[0006] However, currently, robots capable of lifting and lowering mops often use two drive devices to separately realize the lifting and rotating motion of the mop. Although this structure has a simple control scheme, it is complex in structure and has a high cost.

[0007] Therefore, it is necessary to design a self-propelled surface cleaning robot to solve the above problems. Utility Model Content

[0008] The present disclosure provides a self-propelled surface cleaning robot.

[0009] According to one aspect of the present disclosure, there is provided a self-propelled surface cleaning robot comprising:

[0010] a housing assembly; and

[0011] a cleaning assembly mounted on the housing assembly and configured to clean the surface by frictional contact between the cleaning assembly and the surface;

[0012] Wherein, the cleaning component includes:

[0013] a housing assembly, the housing assembly being mounted on the shell assembly;

[0014] A cleaning component, wherein the cleaning component is used to perform power cleaning on the surface to be cleaned;

[0015] a second drive motor, the second drive motor being in power connection with the cleaning member so as to enable the cleaning member to rotate on the housing assembly about a rotation axis;

[0016] an adjustment mechanism connected to the housing assembly and the cleaning member, and responsive to a driving force of the second drive motor, causing the cleaning member to move relative to the housing assembly between a lowered position and a raised position, wherein the cleaning member is closer to the housing assembly in the raised position than in the lowered position;

[0017] A damping member is located between the housing assembly and the adjustment mechanism; when the cleaning component switches between a lowered position and an ascending position, the damping member provides a first torque centered on the rotation axis, and the adjustment mechanism provides a second torque centered on the rotation axis, and the first torque is greater than the second torque.

[0018] According to at least one embodiment of the self-propelled surface cleaning robot of the present disclosure, the cleaning component stops rotating relative to the housing assembly during the process of switching between the lowered position and the raised position.

[0019] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the damping member generates a circumferential static friction force and an axial static friction force between the housing assembly and the adjustment mechanism, and the circumferential static friction force is greater than the axial static friction force.

[0020] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the damping member provides the first torque through the circumferential static friction force.

[0021] According to at least one embodiment of the self-propelled surface cleaning robot of the present disclosure, the adjustment mechanism includes a screw and a sleeve, at least a portion of the sleeve is threadably connected to the screw, and the sleeve and the screw move axially relative to each other through the threaded connection.

[0022] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the sleeve includes an inner cylinder, and the inner cylinder and the lead screw are threadedly connected.

[0023] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the leadscrew and the sleeve provide a second torque through the threaded connection.

[0024] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the second torque is formed by at least thread friction between the lead screw and the sleeve.

[0025] According to the self-propelled surface cleaning robot of at least one embodiment of the present disclosure, the cleaning assembly further includes a stopper fixed to the free end of the lead screw to limit the axial movement stroke of the sleeve relative to the lead screw.

[0026] According to the self-propelled surface cleaning robot of at least one embodiment of the present disclosure, the stopper includes a stopper disc fixed to the free end of the lead screw, and in the lowered position, the stopper disc abuts at least a portion of the sleeve.

[0027] According to the self-propelled surface cleaning robot of at least one embodiment of the present disclosure, in the lowered position, the stopper plate abuts against an end of the inner cylinder.

[0028] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the damping member is disposed between the sleeve and the housing assembly.

[0029] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the housing assembly includes a cylindrical component extending downward, and the damping member is located between the cylindrical component and the sleeve.

[0030] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the damping member is fixedly distributed circumferentially at the free end of the cylindrical component.

[0031] According to at least one embodiment of the self-propelled surface cleaning robot disclosed herein, the damping member is fixedly sleeved on the free end of the cylindrical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The accompanying drawings illustrate exemplary embodiments of the present disclosure and together with the description serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0033] Figure 1 Schematic diagram of the structure of a surface cleaning device according to one embodiment of the present disclosure.

[0034] Figure 2 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure from another angle.

[0035] Figure 3 1 is a schematic structural diagram of a surface cleaning device in another state according to an embodiment of the present disclosure.

[0036] Figure 4 1 is a schematic structural diagram of a surface cleaning device in another state and from another angle according to an embodiment of the present disclosure.

[0037] Figure 5 1 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure.

[0038] Figure 61 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure.

[0039] Figure 7 1 is a schematic structural diagram of a cleaning assembly and a first driving assembly of a surface cleaning device according to one embodiment of the present disclosure.

[0040] Figure 8 1 is a schematic structural diagram of a surface cleaning device according to one embodiment of the present disclosure, wherein the cleaning component is in an extended position.

[0041] Figure 9 1 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure, in which a cleaning component is in an initial position.

[0042] Figure 10 Schematic diagram of the structure of an elastic component of a surface cleaning device according to one embodiment of the present disclosure.

[0043] Figure 11 It is a schematic structural diagram of the middleware according to one embodiment of the present disclosure.

[0044] Figure 12 It is a schematic structural diagram of a cleaning component according to one embodiment of the present disclosure.

[0045] Figure 13 It is a schematic structural diagram of a cleaning component according to an embodiment of the present disclosure from another angle.

[0046] Figure 14 It is a schematic cross-sectional structural diagram of a cleaning component according to one embodiment of the present disclosure.

[0047] Figure 15 Schematic diagram of a partial structure of a cleaning component according to one embodiment of the present disclosure.

[0048] The specific reference numerals in the figure are:

[0049] 100 housing assembly

[0050] 101 Internal Bracket

[0051] 200 side brush assembly

[0052] 300 Cleaning Components

[0053] 400 steering wheel

[0054] 500 travel wheels

[0055] 600 Cleaning Kit

[0056] 610 housing assembly

[0057] 611 cylindrical parts

[0058] 620 Second drive assembly

[0059] 630 Cleaning Parts

[0060] 640 Adjustment Mechanism

[0061] 641 Screw

[0062] 642 Sleeve

[0063] 642A inner tube

[0064] 650 damping element

[0065] 660 stopper

[0066] 700 First drive assembly

[0067] 710 First drive motor

[0068] 720 actuator

[0069] 730 follower

[0070] 740 Middleware

[0071] 741 First Action Unit

[0072] 742 Second Action Unit

[0073] 742A Sliding part

[0074] 742B bulge

[0075] 742B1 First active surface

[0076] 742B2 Second working surface

[0077] 800 elastic components. DETAILED DESCRIPTION

[0078] The present disclosure will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only intended to explain the relevant content and are not intended to limit the present disclosure. It should also be noted that, for ease of description, only the portions relevant to the present disclosure are shown in the accompanying drawings.

[0079] It should be noted that, in the absence of conflict, the embodiments and features of the embodiments in the present disclosure can be combined with each other. The technical solution of the present disclosure will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0080] Unless otherwise stated, the exemplary implementations / examples shown will be understood to provide exemplary features of various details that can be implemented in practice to embody the technological concepts of the present disclosure. Accordingly, features of the various implementations / examples can be additionally combined, separated, interchanged, and / or rearranged, unless otherwise stated, without departing from the technological concepts of the present disclosure.

[0081] The use of cross-hatching and / or shading in the drawings is generally used to indicate different regions within the same component and is not intended to indicate specific materials, material properties, dimensions, ratios, etc. Moreover, the use of same reference numerals in different figures indicates similar and / or identical components.

[0082] When a component is referred to as being "on" or "over", "connected to" or "coupled to" another component, it can be directly on, connected or coupled to the other component or intervening components can be present. However, when a component is referred to as being "directly on", "directly connected to" or "directly coupled to" another component, there are no intervening components present. To that end, the term "connected" can refer to physical or electrical connection, with or without intervening components.

[0083] For descriptive purposes, the present disclosure can use spatial or relative terms, such as "below", "lower", "lowermost", "above", "upper" and "uppermost", "vertical", "horizontal", and the like, to describe the relationship between one component and another component as the figure(s) shown. Unless otherwise stated, the spatial and / or relative terms are intended to encompass different orientations of the device in use, operation, and / or manufacture in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. Moreover, the device can be otherwise oriented (e.g., rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

[0084] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. Furthermore, to the extent that the terms "including," "includes," "containing," "contains," or "containing," "contains," or variants thereof are used in either the detailed description or the claims, such terms are intended to be inclusive in a manner similar to the term "comprising" as an open transition term without precluding any additional or other elements. It is also noted that, as used herein, the terms "substantially," "approximately," and other similar terms are used as synonyms for "about," and are intended to have a meaning similar to that of the term "about" as an approximation indicating that a value is within a reasonable range of a value being described.

[0085] Figure 1 is a structural schematic view of a surface cleaning device according to an embodiment of the present disclosure. Figure 2 is a structural schematic view of another angle of a surface cleaning device according to an embodiment of the present disclosure.

[0086] As shown in Figure 1 and Figure 2 , the surface cleaning device of the present disclosure can be a self-moving surface cleaning device; as one example, the self-moving surface cleaning device can be a sweeping robot, a mopping robot, a self-moving surface cleaning robot, or a sweeping-mopping integrated robot, etc. Among them, the self-moving surface cleaning device is capable of autonomously moving on a surface to be cleaned to clean the surface to be cleaned by sucking particles located on different parts of the surface to be cleaned.

[0087] As shown in Figure 1 and Figure 2 , taking the self-moving surface cleaning robot as an example, the advancing direction of the surface cleaning device is referred to as the front, and with reference to the view direction of Figure 2 , the advancing direction of the surface cleaning device is the side of the upper. The direction away from the advancing direction of the surface cleaning device is the rear, and with reference to the view direction of Figure 2 , the rear of the surface cleaning device refers to the side of the lower. Accordingly, the direction perpendicular to the front-rear direction can be defined as the left-right direction.

[0088] The surface cleaning device can include a housing assembly 100 capable of being formed as a body of the surface cleaning device; the bottom of the housing assembly 100 is provided with a steering wheel 400 for controlling the advancing direction of the surface cleaning device and a walking wheel 500 for driving the surface cleaning device to advance. The steering wheel 400 is arranged at the front position of the housing assembly 100, and the cleaning assembly 600 is rotatably connected to the bottom of the housing assembly 100, which is located at the rear position of the housing assembly 100.

[0089] like Figure 2 As shown, the present disclosure can be provided with two running wheels 500, which are respectively located approximately in the middle of the front-to-back direction of the housing assembly 100 and on both sides of the left-to-right direction of the housing assembly 100; furthermore, the steering wheel 400 is provided as one, which can be a universal wheel, and accordingly, the universal wheel is provided in the middle of the left-to-right direction of the surface cleaning device and close to the front end of the surface cleaning device. Of course, the present disclosure can also be provided with two or more steering wheels 400.

[0090] In actual use, the travel wheel 500 can be driven and rotated, and by controlling the travel wheel 500 to rotate at a constant speed, the surface cleaning device can move forward. Correspondingly, by controlling the travel wheel 500 to rotate at an uneven speed, the surface cleaning device can turn.

[0091] In the present disclosure, a side brush assembly 200 is further provided on the housing assembly 100, wherein the side brush assembly 200 can be provided as one or two; Figure 2 In the implementation form shown, the side brush assembly 200 is set as one, and the side brush assembly 200 is set to the right side of the front end of the shell assembly 100; thereby, through the rotation of the side brush assembly 200, the dirt on the surface to be cleaned can be disturbed and the surface to be cleaned can be cleaned.

[0092] In addition, the housing assembly 100 is further provided with a cleaning assembly 300, which is disposed in the middle of the housing assembly 100 in the front-to-back direction, with its length being the width of the housing assembly 100. More specifically, the cleaning assembly 300 may be a roller brush that is rotatably connected to the housing assembly 100, with its rotation axis parallel to the surface to be cleaned, such as the ground. Figure 2 The specific structure when the cleaning component is a roller brush is shown. The rotation axis of the roller brush is parallel to the surface to be cleaned. When the roller brush rotates, it can clean the surface to be cleaned.

[0093] Therefore, the rotating roller brush of the cleaning component 300 can disturb the dirt on the surface to be cleaned. The dirt can be sucked into the dust box and other devices through negative pressure adsorption, and the solid particles can be separated in the dust box and other devices, thereby completing the cleaning operation of the surface to be cleaned.

[0094] In a preferred embodiment, a cleaning assembly 600 is further provided on the housing assembly 100; in the present disclosure, the cleaning assembly 600 is rotatably connected to the housing assembly 100 and is configured to frictionally contact the surface to be cleaned to clean the surface to be cleaned.

[0095] Figure 31 is a schematic structural diagram of a surface cleaning device in another state according to an embodiment of the present disclosure. Figure 4 1 is a schematic structural diagram of a surface cleaning device in another state and from another angle according to an embodiment of the present disclosure. Figure 5 1 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure. Figure 6 1 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure. Figure 7 1 is a schematic structural diagram of a cleaning assembly and a first driving assembly of a surface cleaning device according to one embodiment of the present disclosure. Figure 8 1 is a schematic structural diagram of a surface cleaning device according to one embodiment of the present disclosure, wherein the cleaning component is in an extended position. Figure 9 1 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure, in which a cleaning component is in an initial position. Figure 10 Schematic diagram of the structure of an elastic component of a surface cleaning device according to one embodiment of the present disclosure.

[0096] like Figures 3 to 10 As shown, the cleaning assembly 600 of the present disclosure is mounted on the housing assembly 100 and can move between an initial position (retracted position) and an extended position (outward expanded position) relative to the housing assembly 100; wherein the initial position is Figure 2 The position shown in FIG. 1 may also be referred to as the adducted position. The extended position is Figure 3 and Figure 4 The position shown may also be referred to as the expanded position.

[0097] Specifically, the housing assembly 100 of the present disclosure may include an inner bracket 101, and the cleaning assembly 600 may be pivotally disposed on the inner bracket 101. For example, the cleaning assembly 600 may be rotatably connected to the inner bracket 101 via a rotating shaft. In a preferred embodiment, the rotating shaft is substantially vertically disposed.

[0098] The cleaning assembly 600 also includes a rotation axis, which is also arranged approximately vertically and has a preset distance between the rotation axis and the rotation axis of the rotating shaft. Thus, when the cleaning assembly 600 rotates around the rotation axis, the cleaning assembly 600 can move between the initial position and the extended position.

[0099] In the present disclosure, the cleaning assembly 600 can be driven by the first driving assembly 700, thereby being able to rotate relative to the housing assembly 100. Specifically, the first driving assembly 700 includes: a first driving motor 710, an actuator 720, a driven member 730, and an intermediate member 740.

[0100] The first drive motor 710 is disposed in the housing assembly 100, for example, in the inner bracket 101, and the rotational motion is outputted by the first drive motor 710. Specifically, the first drive motor 710 can be an electric motor. In a preferred embodiment, the rotation axis of the first drive motor 710 can be a vertical straight line.

[0101] The actuator 720 is transmission-connected to the output shaft of the first drive motor 710. In a preferred embodiment, the actuator 720 can be a gear, whereby the first drive motor 710 can drive the actuator 720 to rotate. Accordingly, the rotation axis of the actuator 720 is the same as the rotation axis of the first drive motor 710.

[0102] The intermediate member 740 is rotatably disposed on the housing assembly 100 , and the intermediate member 740 can pivot relative to the housing assembly 100 under the action of the actuating member 720 ; and the rotation axis of the intermediate member 740 is also substantially vertically disposed.

[0103] In a specific embodiment, the intermediate member 740 includes a first acting portion 741 and a second acting portion 742. The first acting portion 741 includes a plurality of gear teeth, and the second acting portion 742 includes a sliding portion 742A and a protrusion 742B extending along the sliding portion 742A. In other words, the intermediate member 740 of the present disclosure is formed into an incomplete gear structure having an opening of a predetermined width between its two circumferential ends, wherein the sliding portion 742A and the protrusion 742B form one circumferential end of a half gear structure.

[0104] The intermediate member 740 interacts with the actuating member 720 at the first acting portion 741 ; that is, the actuating member 720 can drive the intermediate member 740 to rotate through the engagement of the gear and the plurality of gear teeth.

[0105] The intermediate member 740 interacts with the follower member 730 at the second acting portion 742 . That is, the follower member 730 can be driven to rotate by the cooperation between the second acting portion 742 and the follower member 730 .

[0106] In other words, the follower 730 is rotatably disposed on the housing assembly 100 to change its position relative to the housing assembly 100. Specifically, the follower 730 can pivot about a rotation axis relative to the housing assembly 100. That is, the rotation axis of the follower 730 relative to the housing assembly 100 coincides with the rotation axis of the cleaning assembly 600 relative to the housing assembly 100.

[0107] In addition, the intermediate member 740 of the present disclosure is located between the actuator 720 and the follower 730. The intermediate member 740 is configured to cooperate with the follower 730. Thus, the follower 730 can receive the actuating force of the actuator 720 and change its position relative to the housing assembly 100. In this case, the follower 730 is indirectly affected by the actuator 720, that is, directly affected by the intermediate member 740.

[0108] The follower 730 includes a protrusion configured to slidably abut against the projection 742B. More specifically, the projection 742B includes a first operating surface 742B1 and a second operating surface 742B2. In the initial position, the first operating surface 742B1 abuts against the protrusion, while in the extended position, the second operating surface 742B2 abuts against the protrusion. Thus, the projection 742B drives the follower 730 to rotate, causing the cleaning assembly 600 to rotate from the extended position to the initial position.

[0109] In a preferred embodiment, the protrusion is maintained in sliding abutment with the projection 742B at a position between the initial position and the extended position.

[0110] In the present disclosure, the cleaning assembly 600 may include a housing assembly 610 , a second driving assembly 620 , a cleaning component 630 , and other components.

[0111] The shell component 610 is rotatably disposed on the shell component 100. Specifically, the shell component 610 is rotatably disposed on the inner bracket 101. Accordingly, the shell component 610 is rotatably disposed relative to the rotation axis of the shell component 100, that is, the cleaning component 600 is rotatably disposed relative to the shell component 100.

[0112] In a preferred embodiment, the cleaning assembly 600 is connected to the driven member 730, so that when the driven member 730 is driven and rotated, the cleaning assembly 600 can rotate together with the driven member 730. More preferably, the driven member 730 can be integrally formed with the housing assembly 610 of the cleaning assembly 600.

[0113] The cleaning member 630 is pivotally mounted on the follower 730 ; in other words, the cleaning member 630 is pivotally mounted on the housing assembly 610 , whereby the cleaning member 630 cleans the surface through frictional contact with the surface.

[0114] Preferably, the second drive assembly 620 is arranged on the follower 730 (or the second drive assembly 620 is arranged on the housing assembly 610) and is connected to the cleaning component 630, for driving the cleaning component 630 to rotate relative to the follower 730. At this time, the rotation axis of the cleaning component 630 is the above-mentioned rotation axis.

[0115] In the present disclosure, the elastic component 800 acts on the cleaning component 600 and the shell component 100; wherein, when the cleaning component 600 is in the extended position, the elastic component 800 generates an elastic force between the cleaning component 600 and the shell component 100 to limit the movement of the cleaning component 600 from the extended position to the initial position relative to the shell component 100.

[0116] Specifically, the elastic component 800 includes a first free end and a second free end opposite to the first free end, the first free end acts on the cleaning component 600, and the second free end acts on the housing component 100. In a preferred embodiment, the elastic component 800 is formed as a torsion spring. The cleaning component 600 and the housing component 100 are slidably connected via a rotating shaft. At this time, the torsion spring is sleeved on the rotating shaft, and accordingly, its first free end acts on the follower 730, and the second free end acts on the housing component 100. As a result, the follower 730 (or the cleaning component 600) of the present disclosure can be affected by the elastic component 800, and the elastic component 800 can cause the cleaning component 600 to have a tendency to move toward the extended position.

[0117] When the self-propelled surface cleaning robot of the present disclosure is in use, its cleaning assembly 600 can be extended outward, thereby expanding the cleaning range of the surface to be cleaned and improving the cleaning efficiency of the surface to be cleaned. In addition, the provision of the elastic member 800 enables the cleaning assembly 600 to move back to its original position after contacting an obstacle in the extended position, thereby making the cleaning assembly 600 less susceptible to damage, improving reliability, and extending the service life of the self-propelled surface cleaning robot.

[0118] The second driving assembly 620 of the cleaning assembly 600 of the present disclosure is further used to drive the cleaning member 630 to move up and down.

[0119] Figure 12 It is a schematic structural diagram of a cleaning component according to one embodiment of the present disclosure. Figure 13 It is a schematic structural diagram of a cleaning component according to an embodiment of the present disclosure from another angle. Figure 14 It is a schematic cross-sectional structural diagram of a cleaning component according to one embodiment of the present disclosure. Figure 15 Schematic diagram of a partial structure of a cleaning component according to one embodiment of the present disclosure.

[0120] like Figures 12 to 14 As shown, the cleaning assembly 600 of the present disclosure may further include an adjustment mechanism 640 connected to the housing assembly 610 and the cleaning component 630 to change the height of the cleaning component 630 relative to the housing assembly 610 in response to a received driving force.

[0121] In a specific embodiment, the second drive assembly 620 is used to provide a driving force to the adjustment mechanism 640, so as to adjust the distance between the cleaning member 630 and the surface to be cleaned through the adjustment mechanism 640. For example, the second drive assembly 620 may include a second drive motor, which is disposed in the housing assembly 610 and is used to provide a driving force to the lead screw 641, thereby transmitting the driving force of the second drive motor to the lead screw 641.

[0122] In the present disclosure, the second drive motor can transmit the driving force to the lead screw 641 through a worm gear transmission structure and / or a gear transmission structure. The worm gear transmission structure and the gear transmission structure can be implemented using solutions in the prior art, and this disclosure will not elaborate on them one by one.

[0123] like Figure 14 As shown, the adjustment mechanism 640 of the present disclosure includes a screw 641 and a sleeve 642, at least a portion of the sleeve 642 can be threadedly connected to the screw 641, and when one of the screw 641 and the sleeve 642 receives a driving force, the sleeve 642 and the screw 641 move axially relative to each other through the threaded connection.

[0124] That is, when the lead screw 641 is driven to rotate, if the sleeve 642 is kept from rotating, or even if the sleeve 642 rotates, but its rotation speed is less than the rotation speed of the lead screw 641 (i.e., the lead screw 641 and the sleeve 642 do not rotate at the same speed), the relative position of the lead screw 641 and the sleeve 642 in the axial direction will change. At the same time, since the cleaning component 630 is disposed at the lower end of the sleeve 642 and the vertical position of the lead screw 641 remains unchanged, the cleaning component 630 will generate a lifting motion and can move between a lowered position and an ascending position relative to the housing assembly 100. In the present disclosure, the cleaning component 630 is closer to the housing assembly 100 in the ascending position than in the descending position.

[0125] At the same time, when the cleaning member 630 is in the lowered position, the cleaning member 630 can contact the surface to be cleaned with pressure. When the cleaning member 630 is in the raised position, the cleaning member 630 can leave the surface to be cleaned. Accordingly, when the cleaning member 630 is in the raised position, it can avoid obstacles on the surface to be cleaned, preventing the obstacles on the surface to be cleaned from colliding with the cleaning member 630.

[0126] In the present disclosure, the second drive motor is connected to the cleaning member 630 so that the cleaning member 630 can rotate around the rotation axis on the housing assembly 610. Specifically, the second drive motor is not directly connected to the cleaning member 630, but transmits power to the cleaning member 630 through the adjustment mechanism 640, thereby driving the cleaning member 630 to rotate.

[0127] Specifically, when the second drive motor drives the lead screw 641 to rotate in the first direction, this lead screw 641 will drive sleeve 642 to move downwards, and make cleaning component 630 be in the descending position, at this moment, sleeve 642 will not further move downwards relative to the lead screw 641, but rotates together with the lead screw 641, and drives cleaning component 630 to rotate along the first direction.On the other hand, when the second drive motor drives the lead screw 641 to rotate in the second direction, this lead screw 641 will drive sleeve 642 to move upwards, and make cleaning component 630 be in the ascending position, at this moment, sleeve 642 will not further move upwards relative to the lead screw 641.In this position, because cleaning component 630 does not need to clean the surface to be cleaned, accordingly, the second drive motor can stop rotating.But when the second drive motor continues to drive the lead screw 641 to rotate in the second direction, this lead screw 641 will drive sleeve 642 to rotate in the second direction, and accordingly, cleaning component 630 will rotate in the second direction.

[0128] Based on the above structure, the second driving motor of the present disclosure can drive the cleaning member 630 to move up and down, and can also drive the cleaning member 630 to rotate.

[0129] In the present disclosure, when the second drive motor drives the cleaning component 630 to rise or fall, the rotation of the sleeve 642 should be stopped as much as possible so that the sleeve 642 can complete the lifting and lowering movement as quickly as possible. In this case, the cleaning assembly 600 of the present disclosure may further include a damping member 650, which is located between the housing assembly 610 and the adjustment mechanism 640. When the cleaning component 630 switches between the lowered position and the raised position, the damping member 650 provides a first torque centered on the rotation axis, and the adjustment mechanism 640 provides a second torque centered on the rotation axis, where the first torque is greater than the second torque.

[0130] Specifically, by providing the damping member 650 , the cleaning member 630 stops rotating relative to the housing assembly 610 during the process of switching between the lowered position and the raised position.

[0131] In a preferred embodiment, the damping member 650 forms circumferential static friction (circumferential damping friction) and axial static friction (axial damping friction) between the housing assembly 610 and the adjustment mechanism 640. The circumferential static friction (circumferential damping friction) is greater than the axial static friction (axial damping friction). Thus, the damping member 650 can suppress the rotation of the sleeve 642 as much as possible, while facilitating the axial movement of the sleeve 642 relative to the damping member 650.

[0132] In the present disclosure, the damping member 650 provides a first torque by a circumferential static friction. The lead screw 641 and the sleeve 642 provide a second torque by a threaded connection. In which, the second torque is formed by a threaded friction between the lead screw 641 and the sleeve 642. Accordingly, when the first torque is greater than the second torque, the damping member 650 can try to make the sleeve 642 not rotate or rotate less, thereby the lead screw 641 can make the sleeve 642 lift when rotating.

[0133] As shown in Figure 14 the present disclosure, the sleeve 642 comprises a free end, and the cleaning component 630 is detachably connected to the free end. In which, the free end of the sleeve 642 is the lower end of the sleeve 642. Moreover, by detachably connecting the cleaning component 630 to the free end of the sleeve 642, the cleaning component 630 can be conveniently maintained and / or replaced.

[0134] Referring back to Figure 14 , in a specific embodiment, the sleeve 642 comprises an inner sleeve 642A, and the center of the inner sleeve 642A is formed with an internally threaded hole, thereby the inner sleeve 642A can be threadedly connected with the lead screw 641.

[0135] The cleaning assembly 600 further comprises a stop member 660. In the present disclosure, the stop member 660 can be provided as two, in which, one stop member 660 can be a shaft shoulder at the upper end of the lead screw 641, and the other stop member 660 can be a stop disc at the lower end of the lead screw 641. That is, the stop member 660 can be fixed at the free end of the lead screw 641 to limit the axial movement stroke of the sleeve 642 relative to the lead screw 641.

[0136] In the limit position, the stop member 660 abuts at least a portion of the sleeve 642, for example, the stop member 660 can abut the end of the inner sleeve 642A of the sleeve 642.

[0137] Specifically, as shown in Figure 14 , the cleaning component 630 is in a lowered position, and in this position, the stop disc abuts the lower end of the sleeve 642. In addition, when the cleaning component 630 is in a raised position, the shaft shoulder of the lead screw 641 can abut the upper end of the inner sleeve 642A of the sleeve 642, thereby limiting the sleeve 642 from further moving upward.

[0138] In a preferred embodiment, the housing assembly 610 comprises a downwardly extending cylindrical component 611, and the damping member 650 is located between the cylindrical component 611 and the sleeve 642. More preferably, the damping member 650 is circumferentially fixedly distributed at the free end of the cylindrical component 611.

[0139] For example, the damper 650 can be a damper fixedly sleeved to the free end of the cylindrical member 611 and located outside the cylindrical member 611. That is, the lower end of the cylindrical member 611 of the present disclosure can be inserted into the sleeve 642, so that the damper 650 can be held between the cylindrical member 611 and the sleeve 642.

[0140] In the surface cleaning device of the present disclosure, the cooperation of the screw rod 641 and the sleeve 642, and the relatively long thread cooperation length of the screw rod 641 and the sleeve 642, effectively solve the sleeve cooperation failure in the prior art.

[0141] In the description of the present disclosure, the description of the terms "one embodiment / way", "some embodiments / ways", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment / way or example are included in at least one embodiment / way or example of the present application. In the present description, the illustrative description of the above terms does not necessarily refer to the same embodiment / way or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments / ways or examples. In addition, the skilled person in the art can combine and combine the different embodiments / ways or examples described in the present description and the features of the different embodiments / ways or examples, without contradiction.

[0142] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0143] Those skilled in the art should understand that the above embodiments are only for the purpose of clearly illustrating the present disclosure, and are not intended to limit the scope of the present disclosure. Based on the above disclosure, other changes or modifications can also be made by those skilled in the art, and these changes or modifications are still within the scope of the present disclosure.

Claims

1. A self-propelled surface cleaning robot, characterized in that: include: housing assembly; as well as a cleaning assembly mounted on the housing assembly and configured to clean the surface by frictional contact between the cleaning assembly and the surface; Wherein, the cleaning component includes: a housing assembly, the housing assembly being mounted on the shell assembly; A cleaning component, the cleaning component is used to perform power cleaning on the surface to be cleaned; a second drive motor, the second drive motor being in power connection with the cleaning member so as to enable the cleaning member to rotate on the housing assembly about a rotation axis; an adjustment mechanism connected to the housing assembly and the cleaning member, and responsive to a driving force of the second drive motor, causing the cleaning member to move relative to the housing assembly between a lowered position and a raised position, wherein the cleaning member is closer to the housing assembly in the raised position than in the lowered position; A damping member is located between the housing assembly and the adjustment mechanism; when the cleaning component switches between a lowered position and an ascending position, the damping member provides a first torque centered on the rotation axis, and the adjustment mechanism provides a second torque centered on the rotation axis, and the first torque is greater than the second torque.

2. The self-propelled surface cleaning robot according to claim 1, wherein: During the process of switching the cleaning component between the lowered position and the raised position, the cleaning component stops rotating relative to the housing assembly.

3. The self-propelled surface cleaning robot according to claim 1, wherein: The damping member generates a circumferential static friction force and an axial static friction force between the housing assembly and the adjustment mechanism, and the circumferential static friction force is greater than the axial static friction force.

4. The self-propelled surface cleaning robot according to claim 3, wherein: The damping member provides a first torque through the circumferential static friction force.

5. The self-propelled surface cleaning robot according to claim 1, wherein: The adjustment mechanism includes a lead screw and a sleeve. At least a portion of the sleeve can be threadedly connected to the lead screw. The sleeve and the lead screw can move axially relative to each other through the threaded connection.

6. The self-propelled surface cleaning robot according to claim 5, characterized in that The sleeve includes an inner cylinder, and the inner cylinder is threadedly connected to the lead screw.

7. The self-propelled surface cleaning robot according to claim 5, wherein: The screw and sleeve provide a second torque through the threaded connection.

8. The self-propelled surface cleaning robot according to claim 7, wherein: The second torque is generated at least by thread friction between the screw and the sleeve.

9. The self-propelled surface cleaning robot according to claim 6, wherein: The cleaning assembly further includes a stopper fixed to the free end of the lead screw to limit the axial movement stroke of the sleeve relative to the lead screw.

10. The self-propelled surface cleaning robot according to claim 9, wherein: The stop member includes a stop disc fixed to a free end of the lead screw, wherein in the lowered position, the stop disc abuts at least a portion of the sleeve.

11. The self-propelled surface cleaning robot according to claim 10, wherein: In the lowered position, the stop plate abuts against the end of the inner cylinder.

12. The self-propelled surface cleaning robot according to claim 5, wherein: The damping member is disposed between the sleeve and the housing assembly.

13. The self-propelled surface cleaning robot according to claim 5, wherein: The housing assembly includes a cylindrical component extending downward, and the damping member is located between the cylindrical component and the sleeve.

14. The self-propelled surface cleaning robot according to claim 13, wherein: The damping elements are fixedly distributed circumferentially at the free end of the cylindrical component.

15. The self-propelled surface cleaning robot according to claim 14, wherein: The damping member is fixedly sleeved on the free end of the cylindrical component.

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