Cleaning device and cleaning robot

Abstract

The utility model provides a cleaning device and a cleaning robot, and belongs to the technical field of cleaning equipment. The cleaning device comprises a shell, a cleaning roller and a driving mechanism; a roller groove is defined in the shell, a fixing piece and a first connecting ring which is arranged on the fixing piece in a sleeving mode and can rotate relative to the fixing piece are fixedly arranged in the roller groove, and the first connecting ring is provided with a first connecting part; the cleaning roller is rotationally arranged in the roller groove, the cleaning roller is provided with a first connecting end and a first free end, the first connecting end is provided with a second connecting part, and the second connecting part is movably connected with the first connecting part and used for limiting the cleaning roller to move in the axis direction and / or the radial direction of the fixing part or releasing limitation on the cleaning roller; the driving mechanism is used for driving the cleaning roller to rotate relative to the fixing piece. According to the cleaning device, the cleaning roller can be limited to move in the axis direction and / or the radial direction of the fixing part, or limitation on the cleaning roller is relieved, and the mounting or dismounting efficiency of the cleaning roller is improved.

Description

Technical Field

[0001] The present application relates to the technical field of cleaning equipment, and in particular to a cleaning device and a cleaning robot. Background Art

[0002] The ends of the cleaning robot's roller brush are usually mounted on the inner wall of the roller groove, and the motor that drives the roller brush is connected to one end of the roller brush. The motor drives the roller brush to rotate and clean the floor. Because the existing roller brushes are prone to hair entanglement, users need to frequently disassemble and disassemble the roller brush.

[0003] Since the existing roller brush and roller groove connection structure is relatively complex and the space of the roller brush structure is small, the installation or disassembly is not only difficult but also inefficient. Utility Model Content

[0004] In view of this, the purpose of this application is to overcome the deficiencies in the prior art and provide a cleaning device and a cleaning robot.

[0005] The present application provides the following technical solution: a cleaning device comprising:

[0006] The housing defines a roller groove, wherein a holding member and a first connecting ring sleeved on the holding member and rotatable relative to the holding member are fixedly disposed in the roller groove, wherein the first connecting ring has a first connecting portion;

[0007] a cleaning roller rotatably disposed in the roller groove, the cleaning roller having a first connection end and a first free end, the first connection end being provided with a second connection portion, the second connection portion being movably connected to the first connection portion and being used to restrict movement of the cleaning roller along the axial direction and / or radial direction of the holding member, or to release the restriction on the cleaning roller;

[0008] The driving mechanism is used for driving the cleaning roller to rotate relative to the holding member.

[0009] In some embodiments, the second connection portion has a first state and a second state;

[0010] In the first state, the first connecting portion and the second connecting portion are connected to form a limiting structure, and the limiting structure is used to limit the first connecting end to limit the movement of the cleaning roller along the axial direction and / or radial direction of the holding member;

[0011] In the second state, the first connecting portion and the second connecting portion are released from the limit, so as to be used for removing the cleaning roller from the first connecting ring.

[0012] In some embodiments, the first connecting portion is a limiting protrusion;

[0013] The second connecting portion includes a limiting member and a ring body having a first notch;

[0014] The limiting member is rotatably connected to the ring body;

[0015] In the first state, the limiting member partially covers the first notch to define an opening, and the limiting protrusion is received in the opening to form a limiting structure through the inner wall of the opening and the outer wall of the limiting protrusion.

[0016] In some embodiments, the opening is provided on the limiting member;

[0017] Or the second connecting portion includes a support platform, a second notch is provided on a side of the limiting member facing the support platform, and an inner wall of the second notch and a side of the supporting platform facing the limiting member form the opening.

[0018] In some embodiments, the difference between the width of the limiting protrusion and the width of the opening is 1 mm to 3 mm.

[0019] In some embodiments, the limiting member has a second connecting end and a second free end;

[0020] The second connecting end is rotatably connected to the ring body, and the ring body is provided with a coupling portion;

[0021] In the first state, the second free end and the coupling portion cooperate with each other to position the first connecting end on the first connecting ring;

[0022] One of the second free end and the combining portion is a positioning slot, and the other is a positioning protrusion.

[0023] In some embodiments, the second connecting portion includes a collar and an elastic limiting member;

[0024] The collar is provided with a plurality of spaced mounting holes in a circumferential direction, wherein the elastic limiting member is provided in the mounting hole. In the absence of external force, the elastically retractable end of the elastic limiting member at least partially protrudes from the inner wall of the collar;

[0025] The first connecting portion is an annular groove;

[0026] In the first state, the collar is sleeved on the first connecting ring, and the elastic telescopic end is at least partially accommodated in the annular groove, so that a limiting structure is formed by the elastic telescopic end and the annular groove.

[0027] In some embodiments, the distance between the two opposite walls of the annular groove is gradually reduced from the groove opening to the groove bottom.

[0028] In some embodiments, the driving mechanism includes a driving motor, a transmission device, and a driving shaft;

[0029] The cleaning device further includes a bearing;

[0030] The inner ring of the bearing is fixed on the retaining member, and the outer ring of the bearing is fixed in the first connecting ring, and the outer ring of the bearing is rotatable relative to the inner ring of the bearing;

[0031] The output end of the driving motor is in transmission connection with the driving shaft through the transmission device. The driving shaft passes through the holding member and is coaxially positioned and inserted into the cleaning roller so as to be able to drive the cleaning roller to rotate.

[0032] In a second aspect, the present application provides a cleaning robot comprising a movable main body and the cleaning device, wherein the cleaning device is mounted on the main body.

[0033] The embodiments of the present application have the following advantages: by movably connecting the first connecting end with the first connecting ring, the cleaning roller is movably connected to the first connecting ring to facilitate the installation or removal of the cleaning roller on the first connecting ring; by connecting the first connecting part and the second connecting part to limit the movement of the cleaning roller along the axial direction and / or radial direction of the retaining member, the stability of the connection between the cleaning roller and the first connecting ring is ensured; in addition, by disassembling the first connecting part and the second connecting part to release the restriction on the cleaning roller, the efficiency of installing or removing the cleaning roller on the shell is improved.

[0034] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments. It should be understood that the following drawings only illustrate certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without any creative work.

[0036] Figure 1 A structural schematic diagram showing a perspective of an embodiment of a cleaning device provided by some embodiments of the present utility model;

[0037] Figure 2 Shown Figure 1 Cross-sectional view of the middle AA section;

[0038] Figure 3 An exploded view of an embodiment of a cleaning device provided by some embodiments of the present invention is shown;

[0039] Figure 4 A schematic diagram of the internal structure of a cleaning device according to some embodiments of the present invention is shown;

[0040] Figure 5 Another schematic diagram of the interior structure of an embodiment of a cleaning device provided by some embodiments of the present utility model is shown;

[0041] Figure 6 A schematic structural diagram of a cleaning roller in an embodiment of a cleaning device provided by some embodiments of the present utility model is shown;

[0042] Figure 7 A schematic structural diagram of a position limiting member in an embodiment of a cleaning device provided by some embodiments of the present utility model is shown;

[0043] Figure 8 A schematic diagram of the internal structure of another embodiment of a cleaning device provided by some embodiments of the present utility model is shown;

[0044] Figure 9 Shown Figure 8 Cross-sectional view of the middle BB part;

[0045] Figure 10 An exploded view of another embodiment of a cleaning device provided by some embodiments of the present invention is shown;

[0046] Figure 11 A schematic structural diagram of a cleaning roller in another embodiment of a cleaning device provided in some embodiments of the present invention is shown.

[0047] Description of main component symbols:

[0048] 100-housing; 110-roller groove; 200-holding member; 300-first connecting ring; 310-first connecting portion; 400-cleaning roller; 410-first connecting end; 420-first free end; 500-second connecting portion; 600-driving mechanism; 510-limiting member; 520-ring body; 521-first notch; 530-opening; 540-support platform; 511-second notch; 512-second connecting end; 513-second free end; 522-joining portion; 550-ring; 560-elastic limiting member; 551-mounting hole; 561-elastic telescopic end; 610-driving motor; 620-transmission device; 630-driving shaft; 700-bearing. DETAILED DESCRIPTION

[0049] The following describes in detail embodiments of the present application. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and are not to be construed as limiting the present application.

[0050] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. Conversely, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0051] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and internal connections between two components or interactions between two components. Those skilled in the art will understand the specific meanings of these terms in this application based on specific circumstances.

[0052] 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 one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0053] Unless otherwise defined, all technical and scientific terms used herein have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the template description herein are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0054] like Figures 1 to 4 As shown, some embodiments of the present application provide a cleaning device, which is mainly used in a cleaning robot to improve the convenience of the cleaning roller 400 during installation or removal, and improve the efficiency of the removal or installation of the cleaning roller 400.

[0055] The cleaning device includes a housing 100 , a cleaning roller 400 and a driving mechanism 600 .

[0056] The housing 100 defines a roller groove 110, within which are fixedly disposed a retaining member 200 and a first connecting ring 300 that is sleeved on and rotatable relative to the retaining member 200. The retaining member 200 is fixedly connected to the housing 100 to ensure its stability on the housing 100. The retaining member 200 thus provides support for the first connecting ring 300, ensuring its stability during rotation on the retaining member 200.

[0057] The first connecting ring 300 may include a circular connecting ring, an elliptical connecting ring, a D-shaped connecting ring, a square connecting ring or other special shapes, which may be specifically set according to actual conditions. In some embodiments, the first connecting ring 300 is circular.

[0058] It can be understood that the axis of the first connecting ring 300 coincides with the axis of the retaining member 200 .

[0059] It should be noted that the first connecting ring 300 is provided with a first connecting portion 310 .

[0060] The cleaning roller 400 is rotatably disposed in the roller groove 110, that is, the cleaning roller 400 can rotate relative to the housing 100. There is a gap between the cleaning roller 400 and the groove wall of the roller groove 110 to ensure the smoothness of the cleaning roller 400 during rotation.

[0061] In addition, the cleaning roller 400 has a first connecting end 410 and a first free end 420 . The first connecting end 410 is used to connect with the first connecting ring 300 , so as to connect the cleaning roller 400 to the first connecting ring 300 .

[0062] It should be noted that when the first connecting end 410 is connected to the first connecting ring 300, since the first connecting ring 300 is rotatably connected to the holding member 200, that is, the cleaning roller 400 is rotatably connected to the holding member 200 through the first connecting ring 300, the cleaning roller 400 can be supported by the holding member 200 to ensure the stability of the cleaning roller 400 on the holding member 200, and the stability of the cleaning roller 400 during rotation in the roller groove 110 is ensured through the connection between the cleaning roller 400 and the first connecting ring 300.

[0063] In this embodiment, the first connection end 410 is provided with a second connection portion 500, and the second connection portion 500 is movably connected to the first connection portion 310. It should be noted that the connection between the first connection portion 310 and the second connection portion 500 includes at least one of magnetic connection, bonding, clamping, threaded connection, and bolt connection, and can be specifically set according to actual conditions.

[0064] The first connecting portion 310 and the second connecting portion 500 are connected to restrict the cleaning roller 400 from moving along the axial direction and / or radial direction of the holding member 200 .

[0065] In addition, the first connection portion 310 and the second connection portion 500 may be disassembled, spaced or separated to release the restriction on the cleaning roller 400 .

[0066] In addition, the driving mechanism 600 is used to drive the cleaning roller 400 to rotate relative to the holding member 200. It is understandable that the driving mechanism 600 drives the cleaning roller 400 to rotate relative to the holding member 200, that is, when the driving mechanism 600 is running, it can drive the cleaning roller 400 to rotate, thereby cleaning the cleaning surface through the cleaning roller 400.

[0067] like Figure 2 As shown, in some embodiments of the present application, the second connecting portion 500 has a first state and a second state.

[0068] In the first state, the first connecting part 310 and the second connecting part 500 are connected to form a limiting structure to ensure the stability of the connection between the first connecting part 310 and the second connecting part 500. The first connecting end 410 is limited by the limiting structure, thereby connecting the cleaning roller 400 to the first connecting ring 300, limiting the movement of the cleaning roller 400 along the axial direction and / or radial direction of the retaining member 200, so as to ensure the stability of the connection between the cleaning roller 400 and the first connecting ring 300, thereby preventing the cleaning roller 400 from falling off the first connecting ring 300.

[0069] In the second state, the first connecting part 310 and the second connecting part 500 are released from the limit, that is, at this time, there is no limit effect between the first connecting part 310 and the second connecting part 500, and the second connecting part 500 can be separated from the first connecting part 310 under the action of external force, that is, the first connecting end 410 can be separated from the first connecting ring 300, so that the cleaning roller 400 can be removed from the first connecting ring 300.

[0070] like Figures 2 to 6 As shown, in some embodiments of the present application, the first connecting portion 310 is a limiting protrusion, and the limiting protrusion is provided on the outer wall of the first connecting ring 300 .

[0071] The second connecting portion 500 includes a limiting member 510 and a ring body 520 having a first notch 521 . It should be noted that the first notch 521 is provided on a side of the ring body 520 away from the first free end 420 , and the limiting member 510 is rotatably connected to the ring body 520 .

[0072] In the first state, the limiting member 510 partially covers the first notch 521 to define an opening 530, and the limiting protrusion is accommodated in the opening 530 to form a limiting structure through the contact between the inner wall of the opening 530 and the outer wall of the limiting protrusion to prevent the first connecting end 410 from falling off the first connecting ring 300, so as to ensure the stability of the connection between the first connecting end 410 and the first connecting ring 300, thereby ensuring the stability of the connection between the cleaning roller 400 and the first connecting ring 300.

[0073] It should be noted that, in the first state, the limiting member 510 and the ring body 520 are connected to form an annular structure, and the annular structure is sleeved on the first connecting ring 300 .

[0074] like Figure 5 As shown, in some embodiments of the present application, the opening 530 is arranged on the limiting member 510, that is, the limiting member 510 is provided with an opening 530. In the first state, the limiting protrusion is accommodated in the opening 530 to form a limiting structure through the inner wall of the opening 530 and the outer wall of the limiting protrusion.

[0075] In addition, if Figure 3 and Figure 7 As shown, in some embodiments of the present application, the second connecting portion 500 includes a support platform 540, and the side of the limiting member 510 facing the support platform 540 is provided with a second notch 511. In the first state, the inner wall of the second notch 511 and the side of the support platform 540 facing the limiting member 510 form the opening 530, thereby forming a limiting structure through the inner wall of the opening 530 and the outer wall of the limiting protrusion.

[0076] like Figure 5 and Figure 6 As shown, in some embodiments of the present application, the difference between the width of the limiting protrusion and the width of the opening 530 is 1mm~3mm, so as to avoid the difficulty of installation due to too small a width, and also avoid the stability of the connection between the cleaning roller 400 and the first connecting ring 300.

[0077] It should be noted that the width of the limiting protrusion refers to the distance between the two ends of the limiting protrusion along the circumferential direction of the first connecting ring 300. The width of the opening 530 refers to the distance between the second connecting end 512 and the second free end 513 of the opening 530 along the length direction of the limiting member 510.

[0078] In addition, the thickness of the limiting protrusion is less than or equal to the depth of the opening 530, thereby preventing the limiting protrusion from protruding from the outer wall of the ring body 520 to form an obstruction, thereby ensuring the smoothness of the surface of the ring body 520 and improving the space utilization rate of the connection between the cleaning roller 400 and the first connecting ring 300.

[0079] It is worth noting that the thickness of the limiting protrusion refers to the distance from the side of the limiting protrusion away from the first connecting ring 300 to the side of the limiting protrusion facing the first connecting ring 300. The depth of the opening 530 refers to the distance between the two ends of the opening 530 along the thickness direction of the limiting member 510.

[0080] like Figure 4 、 Figure 5 and 7 As shown, in some embodiments of the present application, the limiting member 510 has a second connecting end 512 and a second free end 513 .

[0081] The second connecting end 512 is rotatably connected to the ring body 520 . The ring body 520 is provided with a coupling portion 522 . The coupling portion 522 is used to connect to the second free end 513 .

[0082] In the first state, the second free end 513 and the coupling portion 522 cooperate with each other to position the first connecting end 410 on the first connecting ring 300 , thereby installing the cleaning roller 400 on the first connecting ring 300 .

[0083] In addition, one of the second free end 513 and the coupling portion 522 is a positioning slot, and the other is a positioning protrusion. It is understood that in the first state, the protrusion is engaged with the positioning slot and connects the second free end 513 and the coupling portion 522, thereby connecting the first connecting portion 310 and the second connecting portion 500 to form a limiting structure to ensure the stability of the connection between the cleaning roller 400 and the first connecting ring 300.

[0084] It should be noted that in the second state, there is a gap between the second free end 513 and the coupling portion 522, that is, the limiting protrusion is separated from the opening 530. At this time, there is no limiting effect between the first connecting portion 310 and the second connecting portion 500, so that the cleaning roller 400 can be removed from the first connecting ring 300.

[0085] like Figures 8 to 11 As shown, in some embodiments of the present application, the second connecting portion 500 includes a ring 550 and an elastic limiting member 560 .

[0086] In which, the ring 550 is provided with a plurality of spaced mounting holes 551 on its circumference, and each mounting hole 551 is provided with an elastic limiting member 560. In the absence of external force, the elastic telescopic end 561 of the elastic limiting member 560 at least partially protrudes from the inner wall of the ring 550.

[0087] It can be understood that the elastic telescopic end 561 can shrink into the mounting hole 551 under the action of external force. At this time, elastic potential energy is stored in the elastic telescopic part, and after the external force is removed, the elastic telescopic end 561 can extend from the mounting hole 551 under the action of elastic potential energy.

[0088] In this embodiment, the first connecting portion 310 is an annular groove.

[0089] In the first state, the ring 550 is sleeved on the first connecting ring 300, and the elastic telescopic end 561 is at least partially accommodated in the annular groove, so as to form a limiting structure through the groove wall of the annular groove and the elastic telescopic end 561 to prevent the first connecting end 410 from falling off the first connecting ring 300, thereby ensuring the stability of the connection between the cleaning roller 400 and the first connecting ring 300.

[0090] In addition, it should be noted that, under the action of an external force along the axial direction of the cleaning roller 400, the cleaning roller 400 can be removed from the first connecting ring 300. Specifically, when the cleaning roller 400 is under the action of an external force along the axial direction of the cleaning roller 400, the groove wall of the annular groove exerts pressure on the elastic telescopic end 561, so that the elastic telescopic end 561 contracts toward the mounting hole 551 under the action of pressure. When the elastic telescopic end 561 is completely or partially contracted in the mounting hole 551, the second connecting portion 500 switches from the first state to the second state. That is, at this time, there is no limit effect between the second connecting portion 500 and the first connecting portion 310, so that the cleaning roller 400 can be removed from the first connecting ring 300.

[0091] like Figure 10 As shown, in some embodiments of the present application, the distance between the two opposing walls of the annular groove is gradually reduced from the notch of the annular groove to the bottom of the groove. It is understood that the inclined walls on both sides of the annular groove not only provide space for the elastic telescopic end 561, but also allow the elastic telescopic end 561 to smoothly contract on the inclined walls during the switching of the second connecting portion 500 from the first state to the second state, thereby improving the smoothness of the elastic telescopic end 561 in the process of contracting into the mounting hole 551, thereby improving the smoothness and efficiency of the removal of the cleaning roller 400 from the first connecting ring 300.

[0092] like Figure 10 As shown, in some embodiments of the present application, the elastic limiting member 560 includes a shell, an elastic member and the elastic telescopic end 561.

[0093] In which, the shell defines a guide channel, the elastic member is accommodated in the guide channel, and along the elastic direction of the elastic member, one end of the elastic member is connected to the shell, and the other end of the elastic member is connected to the elastic telescopic end 561, and the elastic telescopic end 561 is at least partially accommodated in the guide channel.

[0094] It should be noted that the elastic telescopic end 561 is slidably arranged in the guide channel, and a limiting portion is provided at one end of the shell close to the elastic telescopic end 561, so as to form a limiting effect on the elastic telescopic end 561 through the limiting portion to prevent the elastic telescopic end 561 from falling off from the guide channel, thereby ensuring the stability and smoothness of the elastic telescopic end 561 during the telescopic process in the guide channel.

[0095] In this embodiment, the elastic member always has elastic force on the elastic telescopic end 561, so that the elastic telescopic end 561 at least partially protrudes from the mounting hole 551, so that the elastic telescopic end 561 can be connected to the groove wall of the annular groove to form a limiting structure, thereby ensuring the connection or disassembly efficiency between the cleaning roller 400 and the first connecting ring 300.

[0096] like Figure 3 、 Figure 9 and Figure 10 As shown, in some embodiments of the present application, the driving mechanism 600 includes a driving motor 610, a transmission device 620, and a driving shaft 630. In addition, the cleaning device further includes a bearing 700.

[0097] It should be noted that the inner ring of the bearing 700 is fixedly mounted on the holder 200, thereby providing support and fixation for the bearing 700 through the holder 200. Furthermore, the outer ring of the bearing 700 is fixed within the first connecting ring 300, thereby providing support and fixation for the first connecting ring 300. The outer ring of the bearing 700 can rotate relative to the inner ring of the bearing 700, that is, the first connecting ring 300 can rotate relative to the holder 200. Because the connecting ring is connected to the connecting end of the cleaning roller 400, the cleaning roller 400 can rotate relative to the holder 200.

[0098] In addition, the output end of the driving motor 610 is in transmission connection with the driving shaft 630 via the transmission device 620 , that is, the output end of the driving motor 610 can drive the driving shaft 630 to rotate synchronously via the transmission device 620 during the rotation process.

[0099] Specifically, the drive shaft 630 passes through the holder 200 and is coaxially inserted into the cleaning roller 400. Rotation of the drive shaft 630 simultaneously drives the cleaning roller 400. By adopting a rotatable connection between the holder 200 and the cleaning roller 400 and a mating connection between the drive shaft 630 and the cleaning roller 400, the cleaning roller 400 is able to rotate stably around its own axis within the constraints of the holder 200 and the drive shaft 630. This prevents the cleaning roller 400 from shaking during rotation, resulting in improved stability.

[0100] In addition, some embodiments of the present application provide a cleaning robot, which includes a movable host and a cleaning device as described in any of the above embodiments, wherein the cleaning device is installed on the host.

[0101] It should be noted that the cleaning robot provided in this embodiment has the structure of the cleaning device described in any of the above embodiments and the beneficial effects produced thereby, which will not be described in detail here.

[0102] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not limiting, and thus other examples of the exemplary embodiments may have different values.

[0103] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0104] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present application. It should be noted that a person skilled in the art may make various modifications and improvements without departing from the scope of the present application, and such modifications and improvements are all within the scope of protection of the present application.

Claims

1. A cleaning device, characterized in that: include: The housing defines a roller groove, wherein a holding member and a first connecting ring sleeved on the holding member and rotatable relative to the holding member are fixedly disposed in the roller groove, wherein the first connecting ring has a first connecting portion; a cleaning roller rotatably disposed in the roller groove, the cleaning roller having a first connection end and a first free end, the first connection end being provided with a second connection portion, the second connection portion being movably connected to the first connection portion and being used to restrict movement of the cleaning roller along the axial direction and / or radial direction of the holding member, or to release the restriction on the cleaning roller; The driving mechanism is used for driving the cleaning roller to rotate relative to the holding member.

2. The cleaning device according to claim 1, characterized in that The second connecting portion has a first state and a second state; In the first state, the first connecting portion and the second connecting portion are connected to form a limiting structure, and the limiting structure is used to limit the first connecting end to limit the movement of the cleaning roller along the axial direction and / or radial direction of the holding member; In the second state, the first connecting portion and the second connecting portion are released from the limit, so as to be used for removing the cleaning roller from the first connecting ring.

3. The cleaning device according to claim 2, characterized in that The first connecting portion is a limiting protrusion; The second connecting portion includes a limiting member and a ring body having a first notch; The limiting member is rotatably connected to the ring body; In the first state, the limiting member partially covers the first notch to define an opening, and the limiting protrusion is received in the opening to form a limiting structure through the inner wall of the opening and the outer wall of the limiting protrusion.

4. The cleaning device according to claim 3, characterized in that The opening is provided on the limiting member; Or the second connecting portion includes a support platform, a second notch is provided on a side of the limiting member facing the support platform, and an inner wall of the second notch and a side of the supporting platform facing the limiting member form the opening.

5. The cleaning device according to claim 3, characterized in that The difference between the width of the limiting protrusion and the width of the opening is 1 mm to 3 mm.

6. The cleaning device according to claim 3, characterized in that The limiting member has a second connecting end and a second free end; The second connecting end is rotatably connected to the ring body, and the ring body is provided with a coupling portion; In the first state, the second free end and the coupling portion cooperate with each other to position the first connecting end on the first connecting ring; One of the second free end and the combining portion is a positioning slot, and the other is a positioning protrusion.

7. The cleaning device according to claim 2, characterized in that The second connecting portion includes a collar and an elastic limiting member; The collar is provided with a plurality of spaced mounting holes in a circumferential direction, wherein the elastic limiting member is provided in the mounting hole. In the absence of external force, the elastically retractable end of the elastic limiting member at least partially protrudes from the inner wall of the collar; The first connecting portion is an annular groove; In the first state, the collar is sleeved on the first connecting ring, and the elastic telescopic end is at least partially accommodated in the annular groove, so that a limiting structure is formed by the elastic telescopic end and the annular groove.

8. The cleaning device according to claim 7, characterized in that The distance between the two opposite walls of the annular groove is gradually reduced from the groove opening to the groove bottom.

9. The cleaning device according to any one of claims 1 to 8, characterized in that The driving mechanism includes a driving motor, a transmission device, and a driving shaft; The cleaning device further includes a bearing; The inner ring of the bearing is fixed on the retaining member, and the outer ring of the bearing is fixed in the first connecting ring, and the outer ring of the bearing is rotatable relative to the inner ring of the bearing; The output end of the driving motor is in transmission connection with the driving shaft through the transmission device. The driving shaft passes through the holding member and is coaxially positioned and inserted into the cleaning roller so as to be able to drive the cleaning roller to rotate.

10. A cleaning robot, characterized in that: The cleaning device comprises a movable main unit and the cleaning device according to any one of claims 1 to 9, wherein the cleaning device is mounted on the main unit.

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