Self-moving type surface cleaning robot

Abstract

The utility model provides a self-moving type surface cleaning robot which comprises a shell assembly and a cleaning assembly, and the cleaning assembly is installed on the shell assembly and cleans a to-be-cleaned surface through friction contact between the cleaning assembly and the to-be-cleaned surface; the cleaning assembly comprises a shell assembly, a cleaning part and an adjusting mechanism. The shell assembly is mounted on the shell assembly; the cleaning part is used for performing power cleaning on the to-be-cleaned surface; the adjusting mechanism is connected with the shell assembly and the cleaning component to change the height of the cleaning component relative to the shell assembly in response to the received driving force; wherein the adjusting mechanism comprises a lead screw and a sleeve, at least one part of the sleeve can be in threaded connection with the lead screw, and when one of the lead screw and the sleeve receives driving force, the sleeve and the lead screw axially move relatively through threaded connection.

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, the performance of current robots that can lift and lower mops is often unsatisfactory because they use a sleeve-matching method, and long-term use may cause failure of the matching between the sleeves and coaxial deviation.

[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 for power cleaning a surface to be cleaned; and

[0015] An adjustment mechanism is connected to the housing assembly and the cleaning component to change the height of the cleaning component relative to the housing assembly in response to a received driving force; wherein the adjustment mechanism includes a screw and a sleeve, at least a portion of the sleeve is capable of being threadedly connected to the screw, and when one of the screw and the sleeve receives a driving force, the sleeve and the screw undergo relative axial movement through the threaded connection.

[0016] According to at least one embodiment of the present disclosure, the self-propelled surface cleaning robot, the cleaning assembly includes:

[0017] A second drive motor is provided in the housing assembly, and the second drive motor is used to provide driving force to the lead screw.

[0018] According to the self-propelled surface cleaning robot of at least one embodiment of the present disclosure, the sleeve includes a free end, and the cleaning component is detachably connected to the free end.

[0019] According to the self-propelled surface cleaning robot of at least one embodiment of the present disclosure, the sleeve includes an inner cylinder, and the inner cylinder is threadedly connected to the lead screw.

[0020] 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.

[0021] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, in the extreme position, the stopper abuts against at least a portion of the sleeve.

[0022] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, in the extreme position, the stopper abuts against the inner cylinder end of the sleeve.

[0023] According to at least one embodiment of the self-propelled surface cleaning robot of the present disclosure, the cleaning assembly further includes a damping member disposed between the sleeve and the housing assembly.

[0024] According to the self-moving surface cleaning robot of at least one embodiment of the present disclosure, the damping member forms circumferential damping friction and axial damping friction between the sleeve and the housing assembly, and the circumferential damping friction is greater than the axial damping friction.

[0025] 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.

[0026] 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.

[0027] According to at least one embodiment of the self-propelled surface cleaning robot of the present disclosure, the damping member includes a damping ring fixedly sleeved on the free end of the cylindrical component.

[0028] According to at least one embodiment of the self-propelled surface cleaning robot of the present disclosure, the damping ring is fixed to the outside of the cylindrical component. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] 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.

[0030] Figure 1 Schematic diagram of the structure of a surface cleaning device according to one embodiment of the present disclosure.

[0031] Figure 2 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure from another angle.

[0032] Figure 3 1 is a schematic structural diagram of a surface cleaning device in another state according to an embodiment of the present disclosure.

[0033] 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.

[0034] Figure 5 1 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure.

[0035] Figure 6 1 is a partial structural diagram of a surface cleaning device according to one embodiment of the present disclosure.

[0036] 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.

[0037] 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.

[0038] 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.

[0039] Figure 10 Schematic diagram of the structure of an elastic component of a surface cleaning device according to one embodiment of the present disclosure.

[0040] Figure 11 It is a schematic structural diagram of the middleware according to one embodiment of the present disclosure.

[0041] Figure 12 It is a schematic structural diagram of a cleaning component according to one embodiment of the present disclosure.

[0042] Figure 13 It is a schematic structural diagram of a cleaning component according to an embodiment of the present disclosure from another angle.

[0043] Figure 14 It is a schematic cross-sectional structural diagram of a cleaning component according to one embodiment of the present disclosure.

[0044] Figure 15 Schematic diagram of a partial structure of a cleaning component according to one embodiment of the present disclosure.

[0045] The specific reference numerals in the figure are:

[0046] 100 housing assembly

[0047] 101 Internal Bracket

[0048] 200 side brush assembly

[0049] 300 Cleaning Components

[0050] 400 steering wheel

[0051] 500 Travel Wheels

[0052] 600 Cleaning Kit

[0053] 610 housing assembly

[0054] 611 cylindrical parts

[0055] 620 Second drive assembly

[0056] 630 Cleaning Parts

[0057] 640 Adjustment Mechanism

[0058] 641 Screw

[0059] 642 sleeve

[0060] 642A inner tube

[0061] 650 damping element

[0062] 660 stopper

[0063] 700 First drive assembly

[0064] 710 First drive motor

[0065] 720 actuator

[0066] 730 follower

[0067] 740 Middleware

[0068] 741 First Action Unit

[0069] 742 Second Action Unit

[0070] 742A Sliding part

[0071] 742B bulge

[0072] 742B1 First active surface

[0073] 742B2 Second working surface

[0074] 800 elastic components. DETAILED DESCRIPTION

[0075] 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.

[0076] 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.

[0077] Unless otherwise stated, the exemplary embodiments / examples shown are to be understood as providing exemplary features of various details of some ways in which the technical concepts of the present disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of the various embodiments / examples may be further combined, separated, interchanged, and / or rearranged without departing from the technical concepts of the present disclosure.

[0078] The use of cross hatching and / or shading in the accompanying drawings is generally used to make the boundaries between adjacent components clear. As such, unless otherwise indicated, the presence or absence of cross hatching or shading does not convey or indicate any preference or requirement for the specific materials, material properties, dimensions, proportions, commonalities between the components shown, and / or any other characteristics, attributes, properties, etc. of the components. In addition, in the accompanying drawings, the sizes and relative sizes of the components may be exaggerated for clarity and / or descriptive purposes. When the exemplary embodiments can be implemented differently, the specific process sequence can be performed in a different order than described. For example, two successively described processes can be performed substantially simultaneously or in an order opposite to the order described. In addition, the same figure numbers represent the same components.

[0079] When a component is referred to as being “on,” “over,” “connected to,” or “coupled to” another component, the component may be directly on, directly connected to, or directly coupled to the other component, or intervening components may 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. For this purpose, the term “connected” may refer to a physical connection, an electrical connection, etc., with or without intervening components.

[0080] For descriptive purposes, the present disclosure may use spatially relative terms such as "below," "beneath," "under," "down," "above," "upper," "above," "higher," and "side (e.g., as in "sidewall")," to describe the relationship of one component to another (other) component as shown in the accompanying drawings. The spatially 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 accompanying drawings. For example, if the device in the drawings is turned over, a component described as "below" or "beneath" another component or feature would then be positioned "above" the other component or feature. Thus, the exemplary term "below" can encompass both the "above" and "below" orientations. Furthermore, the device may be otherwise oriented (e.g., rotated 90 degrees or at other orientations), and as such, the spatially relative descriptors used herein should be interpreted accordingly.

[0081] The terms used herein are for the purpose of describing specific embodiments and are not intended to be restrictive. As used herein, unless the context clearly indicates otherwise, the singular forms "one (kind, person)" and "said (the)" are also intended to include plural forms. In addition, when the terms "comprise" and / or "include" and their variations are used in this specification, the features, integral bodies, steps, operations, parts, assemblies and / or their groups stated are explained, but the presence or addition of one or more other features, integral bodies, steps, operations, parts, assemblies and / or their groups is not excluded. It should also be noted that, as used herein, the terms "substantially", "approximately" and other similar terms are used as approximate terms and not as degree terms, so that they are used to explain the inherent deviations of the measured values, calculated values ​​and / or the values ​​provided that will be recognized by those of ordinary skill in the art.

[0082] Figure 1 Schematic diagram of the structure of a surface cleaning device according to one embodiment of the present disclosure. Figure 2 2 is a schematic structural diagram of a surface cleaning device according to an embodiment of the present disclosure from another angle.

[0083] like Figure 1 and Figure 2 As shown, the surface cleaning device of the present disclosure may be a self-propelled surface cleaning device; as an example, the self-propelled surface cleaning device may be a sweeping robot, a mopping robot, a self-propelled surface cleaning robot, or a sweeping and mopping robot. The self-propelled surface cleaning device is capable of autonomously moving on the surface to be cleaned to clean the surface by sucking particles located on different parts of the surface to be cleaned.

[0084] by Figure 1 and Figure 2 The self-propelled surface cleaning robot shown in the figure is taken as an example, and the forward direction of the surface cleaning device is marked as the front. Figure 2 The direction of view of the surface cleaning equipment is the upper side. The direction away from the surface cleaning equipment is the rear side. Figure 2 In the viewing direction of the surface cleaning device, the rear side refers to the lower side. Accordingly, the direction perpendicular to the front-rear direction can be defined as the left-right direction.

[0085] The surface cleaning device may include a housing assembly 100, which may form the body of the surface cleaning device. A steering wheel 400 and a running wheel 500 are provided at the bottom of the housing assembly 100. The steering wheel 400 is used to control the direction of travel of the surface cleaning device, and the running wheel 500 is used to drive the surface cleaning device forward. The steering wheel 400 is provided at the front of the housing assembly 100, and the cleaning assembly 600 is rotatably connected to the bottom of the housing assembly 100 and is located at the rear of the housing assembly 100.

[0086] 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.

[0087] 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.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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.

[0094] 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.

[0095] 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.

[0096] 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.

[0097] 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.

[0098] 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.

[0099] 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.

[0100] 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.

[0101] 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.

[0102] 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 .

[0103] 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.

[0104] 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.

[0105] 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.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] 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.

[0114] 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.

[0115] 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.

[0116] 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.

[0117] 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.

[0118] 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.

[0119] 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.

[0120] 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.

[0121] 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.

[0122] 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.

[0123] 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.

[0124] 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.

[0125] 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.

[0126] 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.

[0127] 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.

[0128] 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.

[0129] In the present disclosure, damping member 650 provides a first torque through circumferential static friction. Screw 641 and sleeve 642 provide a second torque through a threaded connection. The second torque is generated at least by the friction between the threads of screw 641 and sleeve 642. Accordingly, when the first torque is greater than the second torque, damping member 650 minimizes or prevents sleeve 642 from rotating. As a result, the rotation of screw 641 causes sleeve 642 to rise and fall.

[0130] like Figure 14 As shown, the sleeve 642 of the present disclosure includes a free end, and the cleaning member 630 is detachably connected to the free end. The free end of the sleeve 642 is the lower end of the sleeve 642. Moreover, by detachably connecting the cleaning member 630 to the free end of the sleeve 642, the cleaning member 630 can be easily maintained and / or replaced.

[0131] Refer again Figure 14 In a specific embodiment, the sleeve 642 includes an inner cylinder 642A, and an internal threaded hole is formed in the center of the inner cylinder 642A, so that the inner cylinder 642A can be threadedly connected to the screw 641.

[0132] The cleaning assembly 600 further includes a stopper 660. In the present disclosure, two stoppers 660 may be provided, wherein one stopper 660 may be a shoulder at the upper end of the lead screw 641, and the other stopper 660 may be a stopper plate at the lower end of the lead screw 641. In other words, the stopper 660 may be fixed to the free end of the lead screw 641 to limit the axial movement of the sleeve 642 relative to the lead screw 641.

[0133] In the extreme position, the stopper 660 abuts against at least a portion of the sleeve 642 . For example, the stopper 660 can abut against the end of the inner cylinder 642A of the sleeve 642 .

[0134] Specifically, if Figure 14 As shown, the cleaning member 630 is in a lowered position, at which position the stop plate abuts the lower end of the sleeve 642. In addition, when the cleaning member 630 is in an ascending position, at which position the shoulder of the lead screw 641 can abut the upper end of the inner cylinder 642A of the sleeve 642, thereby limiting further upward movement of the sleeve 642.

[0135] In a preferred embodiment, the housing assembly 610 includes a cylindrical component 611 extending downward, and the damping member 650 is located between the cylindrical component 611 and the sleeve 642. More preferably, the damping member 650 is fixedly distributed circumferentially at the free end of the cylindrical component 611.

[0136] For example, the damping member 650 may be a damping ring that is fixedly sleeved on the free end of the cylindrical component 611 and located outside the cylindrical component 611. In other words, the lower end of the cylindrical component 611 of the present disclosure can be inserted into the sleeve 642, so that the damping member 650 can be retained between the cylindrical component 611 and the sleeve 642.

[0137] In the surface cleaning device disclosed herein, the screw rod 641 and the sleeve 642 are matched, and the screw rod 641 and the sleeve 642 can have a longer thread matching length, which effectively solves the problem of sleeve matching failure in the prior art.

[0138] In the description of this specification, the description with reference to the terms "one embodiment / method", "some embodiments / methods", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment / method or example are included in at least one embodiment / method or example of the present application. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment / method or example. Moreover, the specific features, structures, materials or characteristics described may be combined in an appropriate manner in any one or more embodiments / methods or examples. In addition, those skilled in the art may combine and combine different embodiments / methods or examples described in this specification and the features of different embodiments / methods or examples, unless they are contradictory.

[0139] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0140] Those skilled in the art will appreciate that the above embodiments are merely intended to clearly illustrate the present disclosure and are not intended to limit the scope of the present disclosure. Other changes or modifications may be made based on the above disclosure, and such 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 for power cleaning a surface to be cleaned; and An adjustment mechanism is connected to the housing assembly and the cleaning component to change the height of the cleaning component relative to the housing assembly in response to a received driving force; wherein the adjustment mechanism includes a screw and a sleeve, at least a portion of the sleeve is capable of being threadedly connected to the screw, and when one of the screw and the sleeve receives a driving force, the sleeve and the screw undergo relative axial movement through the threaded connection.

2. The self-propelled surface cleaning robot according to claim 1, characterized in that The cleaning component includes: A second drive motor is provided in the housing assembly, and the second drive motor is used to provide driving force to the lead screw.

3. The self-propelled surface cleaning robot according to claim 1, wherein: The sleeve includes a free end, and the cleaning member is detachably connected to the free end.

4. The self-propelled surface cleaning robot according to claim 1, wherein: The sleeve includes an inner cylinder, and the inner cylinder is threadedly connected to the lead screw.

5. The self-propelled surface cleaning robot according to claim 1, 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.

6. The self-propelled surface cleaning robot according to claim 5, characterized in that In the extreme position, the stopper abuts against at least a portion of the sleeve.

7. The self-propelled surface cleaning robot according to claim 6, wherein: In the extreme position, the stopper abuts against the inner cylinder end of the sleeve.

8. The self-propelled surface cleaning robot according to claim 1, wherein: The cleaning assembly further includes a damping member disposed between the sleeve and the housing assembly.

9. The self-propelled surface cleaning robot according to claim 8, wherein: The damping member forms circumferential damping friction and axial damping friction between the sleeve and the housing assembly, and the circumferential damping friction is greater than the axial damping friction.

10. The self-propelled surface cleaning robot according to claim 8, wherein: The housing assembly includes a cylindrical component extending downward, and the damping member is located between the cylindrical component and the sleeve.

11. The self-propelled surface cleaning robot according to claim 10, wherein: The damping elements are fixedly distributed circumferentially at the free end of the cylindrical component.

12. The self-propelled surface cleaning robot according to claim 10, wherein: The damping member includes a damping ring, which is fixedly sleeved on the free end of the cylindrical component.

13. The self-propelled surface cleaning robot according to claim 12, wherein: The damping ring is fixed to the outside of the cylindrical component.

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