Cleaning device

Abstract

The utility model discloses a cleaning device which comprises a walking unit used for walking on a surface to be cleaned and provided with a rotatable first clamping piece; and the cleaning unit is provided with a second clamping piece clamped with the first clamping piece, the cleaning unit can rotate around the side face of the walking unit to clean the to-be-cleaned face, and the cleaning unit rotates around the side face of the walking unit and can drive the first clamping piece to rotate relative to the walking unit through the second clamping piece. According to the cleaning device, the cleaning unit rotates around the side face of the walking unit and can drive the first clamping piece to rotate relative to the walking unit through the second clamping piece, that is, when the cleaning unit and the second clamping piece rotate, the first clamping piece on the walking unit can rotate along with the second clamping piece; therefore, relative movement between the first clamping piece and the second clamping piece is reduced, abrasion between the first clamping piece and the second clamping piece is reduced, and friction noise is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of daily necessities, in particular to a cleaning device. Background Art

[0002] A traditional cleaning device includes a walking unit and a cleaning unit. The walking unit is used to walk on the surface to be cleaned, and the cleaning unit can rotate around the side of the walking unit to clean the surface to be cleaned. In order to facilitate the overall transportation of the walking unit and the cleaning unit, a first clamping piece is provided on the walking unit, and a second clamping piece is provided on the cleaning unit. The first clamping piece and the second clamping piece are clamped together, so that the walking unit can be driven to move by moving the cleaning unit alone, thereby realizing overall transportation.

[0003] However, since the cleaning unit rotates relative to the traveling unit, the second clamping member provided on the cleaning unit will move relative to the first clamping member provided on the traveling unit to generate friction, thereby causing wear on both, affecting the performance of the cleaning device. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a cleaning device, which can reduce the wear of the first clamping member and the second clamping member.

[0005] According to an embodiment of the utility model, the cleaning device includes: a walking unit, which is used to walk on the surface to be cleaned and is provided with a rotatable first clamping piece; a cleaning unit, which is provided with a second clamping piece that is clamped with the first clamping piece, and the cleaning unit can rotate around the side of the walking unit to clean the surface to be cleaned. The rotation of the cleaning unit around the side of the walking unit can drive the first clamping piece to rotate relative to the walking unit through the second clamping piece.

[0006] According to the cleaning device of the embodiment of the utility model, a rotatable first clamping part is provided on the walking unit to be clamped with the second clamping part on the cleaning unit, and the cleaning unit rotates around the side of the walking unit to drive the first clamping part to rotate relative to the walking unit through the second clamping part, that is, when the cleaning unit and the second clamping part rotate, the first clamping part on the walking unit can rotate together with the second clamping part, thereby reducing the relative activity between the first clamping part and the second clamping part, thereby reducing the wear of the two, reducing friction noise, and providing a good user experience, which can improve the performance and service life of the cleaning device.

[0007] According to the cleaning device of an embodiment of the utility model, the first clamping piece is rotatably arranged on the traveling unit through a bearing, one of the first clamping piece and the traveling unit is fixed to the inner ring of the bearing, and the other of the first clamping piece and the traveling unit is fixed to the outer ring of the bearing.

[0008] In some embodiments, the first clamping member includes a clamping portion, and the clamping portion is provided on a side of the second clamping member away from the surface to be cleaned, so as to prevent the second clamping member from moving in a direction away from the surface to be cleaned.

[0009] In some embodiments, the first clamping member further includes a mounting portion connected to the clamping portion, and the mounting portion is rotatably disposed on the walking unit.

[0010] In some embodiments, the mounting portion is rotatably disposed on the walking unit via a bearing, and the mounting portion includes a first ring and a second ring that are connected to each other, the first ring is sleeved with one of the inner ring and the outer ring of the bearing, and the second ring is fixed to the end face of one of the inner ring and the outer ring of the bearing.

[0011] In some embodiments, the clamping portion is disposed at an end of the first ring away from the surface to be cleaned and extends to a side away from the bearing, and the second ring is disposed at an end of the first ring close to the surface to be cleaned and extends to a side close to the bearing.

[0012] In some embodiments, a shielding portion is further provided on the walking unit, and the shielding portion is provided on a side of the first clamping component away from the surface to be cleaned, so as to shield the first clamping component.

[0013] In some embodiments, a groove is provided at the top center of the walking unit, and a plug-in structure is provided at the corresponding position of the cleaning unit. The plug-in structure is plugged into the groove, and the second clamping piece is protrudingly arranged on the peripheral side of the plug-in structure to be clamped with the first clamping piece.

[0014] In some embodiments, the second clamping member is movably connected to the plug-in structure, and the second clamping member can be disengaged from the first clamping member by moving toward the central axis of the walking unit, and the central axis is perpendicular to the surface to be cleaned.

[0015] In some embodiments, a driving structure is further provided on the walking unit, and the driving structure is connected to the cleaning unit to drive the cleaning unit to rotate around the side of the walking unit.

[0016] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0018] Figure 1 is a schematic diagram of a cleaning device according to an embodiment of the utility model;

[0019] Figure 2 is a cross-sectional view of a cleaning device according to an embodiment of the utility model;

[0020] Figure 3 yes Figure 2 The middle circle shows an enlarged view of A;

[0021] Figure 4 is an exploded view of a cleaning unit according to an embodiment of the utility model;

[0022] Figure 5 yes Figure 4 The middle circle shows an enlarged view of B;

[0023] Figure 6 is an exploded view of a walking unit according to an embodiment of the utility model;

[0024] Figure 7 It is a cross-sectional view of a first clamping component according to an embodiment of the utility model.

[0025] Reference numerals:

[0026] Cleaning device 100,

[0027] Walking unit 10, upper cover 101, base 102, first clamping member 11, clamping portion 111, mounting portion 112, first ring 1121, second ring 1122, bearing 12, shielding portion 13, groove 14,

[0028] Cleaning unit 20, second clamping member 21, guide slope 211, limiting column 212, plug structure 22, rib 221, hook 222, bracket 23, matching portion 231, plug hole 232,

[0029] Driving structure 30. DETAILED DESCRIPTION

[0030] The embodiments of the present invention are described in detail below, and 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 invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Reference below Figure 1-Figure 7 The cleaning device 100 according to the embodiment of the utility model is described. Here, the cleaning device 100 can be used to clean the floor, or can be used to clean glass, a tabletop, etc.

[0034] like Figure 1-Figure 7 As shown, a cleaning device 100 according to an embodiment of the utility model includes: a walking unit 10 and a cleaning unit 20. The walking unit 10 is used for walking on the surface to be cleaned. The walking unit 10 is provided with a rotatable first clamping component 11, that is, the first clamping component 11 can rotate relative to the walking unit 10. The cleaning unit 20 is provided with a second clamping component 21, and the second clamping component 21 is clamped with the first clamping component 11. The cleaning unit 20 and the walking unit 10 cooperate with each other through the two clamping components, so that the cleaning unit 20 can be moved alone to drive the walking unit 10 to move together, thereby realizing overall transportation.

[0035] The cleaning unit 20 can rotate around the side of the walking unit 10 to clean the surface to be cleaned. When the cleaning unit 20 rotates around the side of the walking unit 10, since the second clamping component 21 is clamped with the first clamping component 11, and the first clamping component 11 can rotate on the walking unit 10, the second clamping component 21 can drive the first clamping component 11 to rotate when the cleaning unit 20 rotates, thereby realizing the rotation of the cleaning unit 20 relative to the walking unit 10.

[0036] According to the cleaning device 100 of the embodiment of the utility model, since a rotatable first clip 11 is provided on the walking unit 10 to be clamped with the second clip 21 on the cleaning unit 20, and the cleaning unit 20 can rotate around the side of the walking unit 10 to drive the first clip 11 to rotate relative to the walking unit 10 through the second clip 21, that is, when the cleaning unit 20 and the second clip 21 rotate, the first clip 11 on the walking unit 10 can rotate together with the second clip 21, thereby reducing the relative activity between the first clip 11 and the second clip 21, thereby reducing the wear of the two, and at the same time reducing the friction noise, the user experience is good, and the performance and service life of the cleaning device 100 can be improved.

[0037] In some embodiments, the first clamping component 11 is rotatably provided on the walking unit 10 by means of a slider and a slide rail. For example, a slider is provided on the first clamping component 11, and a slide rail is provided on the walking unit 10. The slider is provided in the slide rail and slides with the slide rail. The slide rail here can be annular, and the slider can slide along a circumferential direction, so that the first clamping component 11 can rotate relative to the walking unit 10.

[0038] like Figure 3As shown, in other embodiments, the first clamping component 11 is rotatably provided on the walking unit 10 through the bearing 12, and the first clamping component 11 and the walking unit 10 are connected by the bearing 12, wherein the bearing 12 has an inner ring and an outer ring, the first clamping component 11 is fixed to the inner ring of the bearing 12, and the walking unit 10 is fixed to the outer ring of the bearing 12, for example, here the fixation is achieved by interference fit, of course, the first clamping component 11 can also be fixed to the outer ring of the bearing 12, and the walking unit 10 is fixed to the inner ring of the bearing 12. Therefore, the first clip 11 is directly installed on the walking unit 10, and the first clip 11 can rotate relative to the walking unit 10, and under the action of the bearing 12, the rotation of the first clip 11 relative to the walking unit 10 is smoother and less noisy. Furthermore, when the cleaning unit 20 rotates relative to the walking unit 10, the first clip 11 is driven to rotate through the second clip 21, thereby reducing the relative activity between the first clip 11 and the second clip 21 and reducing wear. The cleaning unit 20 slides with the walking unit 10 through the first clip 11 under the action of the bearing 12, so that the rotation of the cleaning unit 20 is smoother, noise can be reduced, and the user experience is improved.

[0039] In addition, since the first clamping component 11 is fixed to the bearing 12, the second clamping component 21 cooperates with the first clamping component 11 by clamping, so that the second clamping component 21 can be disengaged from the first clamping component 11, so that the cleaning unit 20 can be disengaged from the walking unit 10, that is, the cleaning unit 20 and the walking unit 10 can be conveniently connected or disassembled by cooperating or disassembling the second clamping component 21 with the first clamping component 11, without the need for the cleaning unit 20 to cooperate or disassemble with the bearing 12, which can reduce the difficulty of assembly and disassembly and improve the user experience.

[0040] like Figure 3 and Figure 7 As shown, the first clamping member 11 includes a clamping portion 111, and the clamping portion 111 is arranged on a side of the second clamping member 21 away from the surface to be cleaned (such as Figure 3 The upper side as shown in the figure) can block the second clamping member 21 from moving in the direction away from the surface to be cleaned. Since the second clamping member 21 is arranged on the cleaning unit 20, if the second clamping member 21 moves upward, the cleaning unit 20 will move upward, thereby causing the cleaning unit 20 to be separated from the surface to be cleaned, thereby making it impossible to effectively clean the surface to be cleaned. Therefore, under the limiting action of the clamping portion 111, the cleaning piece (such as a rag, paper towel or wet wipes, etc.) on the cleaning unit 20 can be kept in contact with the surface to be cleaned, so as to achieve effective cleaning.

[0041] In some examples, the clamping portion 111 is arranged above the second clamping member 21, and the clamping portion 111 can be supported on the second clamping member 21, so that the clamping portion 111 abuts against the second clamping member 21. When the cleaning unit 20 rotates, the second clamping member 21 rotates. Since the first clamping member 11 can rotate relative to the walking unit 10, the friction between the first clamping member 11 and the walking unit 10 is relatively small, and the friction generated by the second clamping member 21 and the clamping portion 111 is relatively larger. Therefore, the second clamping member 21 can drive the clamping portion 111 to rotate synchronously, thereby realizing the synchronous rotation of the first clamping member 11 and the second clamping member 21.

[0042] In other examples, the clamping portion 111 is arranged above the second clamping component 21, and the second clamping component 21 cooperates with the clamping portion 111 by means of a clamping convex and a clamping groove, so that when the cleaning unit 20 rotates, the second clamping component 21 directly drives the clamping portion 111 to rotate, thereby realizing the synchronous rotation of the first clamping component 11 and the second clamping component 21.

[0043] like Figure 3 and Figure 7 As shown, in some embodiments, the first clamping member 11 also includes a mounting portion 112, and the mounting portion 112 is connected to the clamping portion 111. The mounting portion 112 is rotatably arranged on the walking unit 10, that is, the clamping portion 111 is installed on the walking unit 10 through the mounting portion 112, so that the clamping portion 111 is fixed to the walking unit 10; at the same time, since the mounting portion 112 can rotate relative to the walking unit 10, the clamping portion 111 can rotate relative to the walking unit 10. When the second clamping member 21 cooperates with the first clamping member 11, the cleaning unit 20 can drive the clamping portion 111 and the mounting portion 112 to rotate when it rotates, so as to realize the relative rotation of the cleaning unit 20 and the walking unit 10. At the same time, the cleaning unit 20 can be moved alone to drive the walking unit 10 to move together, so as to realize the overall transportation.

[0044] like Figure 3 As shown, in some embodiments, the mounting portion 112 is rotatably disposed on the walking unit 10 through the bearing 12, and the mounting portion 112 includes a first ring 1121 and a second ring 1122 that are connected to each other, the first ring 1121 is sleeved with the inner ring of the bearing 12, that is, the inner ring of the bearing 12 is sleeved on the outer side of the first ring 1121, and the second ring 1122 is fixed to the end face of the inner ring of the bearing 12; or the first ring 1121 is sleeved with the outer ring of the bearing 12, that is, the first ring 1121 is sleeved on the outer side of the outer ring of the bearing 12, and the second ring 1122 is fixed to the end face of the outer ring of the bearing 12, thereby enabling the connection between the mounting portion 112 and the bearing 12, so that the first clamping member 11 is rotatably mounted on the walking unit 10.

[0045] Under the action of the bearing 12, the mounting part 112 can rotate relative to the walking unit 10, and the rotation of the mounting part 112 relative to the walking unit 10 is smoother and less noisy. When the cleaning unit 20 rotates relative to the walking unit 10, the second clip 21 drives the clamping part 111 and the mounting part 112 to rotate, thereby reducing the relative activity between the first clip 11 and the second clip 21, and reducing the wear between the two caused by the relative activity. The cleaning unit 20 slides with the walking unit 10 through the mounting part 112 under the action of the bearing 12, so that the rotation of the cleaning unit 20 is smoother, and the noise can be reduced, thereby improving the user experience.

[0046] like Figure 3 As shown, in some embodiments, the bearing 12 is sleeved on the outer side of the first ring 1121 of the mounting portion 112, the clamping portion 111 is disposed at one end of the first ring 1121 away from the surface to be cleaned, and the clamping portion 111 is disposed on the side away from the bearing 12 (such as Figure 3 The second ring 1122 is provided at one end of the first ring 1121 close to the surface to be cleaned, and the second ring 1122 extends toward the side close to the bearing 12 (as shown in FIG. Figure 3 The second clamping member 21 can be installed on the side of the first clamping member 11 away from the bearing 12, so that the overall structure is more reasonable and compact, and interference is not easy to occur, thereby improving the reliability of the rotation of the cleaning unit 20.

[0047] like Figure 3 As shown, in some embodiments, the walking unit 10 is further provided with a shielding portion 13, which is arranged on a side of the first clamping member 11 away from the surface to be cleaned (such as Figure 3 The shielding portion 13 can shield the first clip 11, which can prevent the first clip 11 from being exposed and the first clip 11 from moving upward, resulting in failure of the cooperation between the first clip 11 and the second clip 21. That is, under the action of the shielding portion 13, the first clip 11 is limited, and then the second clip 21 can effectively cooperate with the first clip 11, so that the first clip 11 can be driven to rotate when the cleaning unit 20 rotates.

[0048] like Figure 3 and Figure 6As shown, in some specific embodiments, the walking unit 10 includes a base 102 and an upper cover 101, the upper cover 101 is installed on the base 102, an installation space is formed between the upper cover 101 and the base 102, the first clip 11 is installed in the installation space, and a part of the upper cover 101 forms a shielding portion 13, that is, the bearing 12 and the first clip 11 can be installed on the base 102, and the bearing 12 and the first clip 11 are shielded inside the walking unit 10 through the cooperation of the upper cover 101 and the base 102, thereby reducing the probability of external dust or moisture contaminating the first clip 11 and the bearing 12, and improving the reliability of the bearing 12 and the first clip 11.

[0049] like Figure 3 and Figure 6 As shown, in some embodiments, a groove 14 is provided at the top center of the walking unit 10, and a plug-in structure 22 is provided at the corresponding position of the cleaning unit 20, the plug-in structure 22 is plugged into the groove 14, and a second clip 21 is protrudingly provided on the peripheral side of the plug-in structure 22 to be plugged with the first clip 11, so that the cleaning unit 20 is connected to the walking unit 10, and when the cleaning unit 20 is moved manually, the walking unit 10 can be driven to move together.

[0050] In some examples, the first clip 11 is disposed on the outside of the groove 14, the side wall of the groove 14 has an opening, and the portion of the second clip 21 protruding from the side of the plug-in structure 22 can be penetrated by the opening, so that the second clip 21 can be snapped with the first clip 11; in other examples, the first clip 11 is located in the groove 14, and the portion of the second clip 21 protruding from the side of the plug-in structure 22 can directly cooperate with the first clip 11.

[0051] like Figure 3-Figure 5 As shown, in some embodiments, the second clamping member 21 is movably connected to the plug structure 22, and the second clamping member 21 moves toward the central axis of the walking unit 10, so that it can be disconnected from the clamping of the first clamping member 11, and the central axis is perpendicular to the surface to be cleaned, such as Figure 3 As shown, the surface to be cleaned is a horizontal plane, and the central axis of the walking unit 10 extends in the vertical direction. The central axis of the walking unit 10 is located on the inner side of the second clip 21, wherein the second clip 21 can be driven to move inward by driving the plug-in structure 22, or the second clip 21 can be directly driven inward to disengage the second clip 21 from the first clip 11, thereby the cleaning unit 20 can be disengaged from the walking unit 10, thereby realizing the disassembly of the cleaning unit 20 and the walking unit 10.

[0052] like Figure 3-Figure 5As shown, in some specific examples, the plug-in structure 22 is configured to move when driven to drive the second clip 21 to move. Specifically, the side of the second clip 21 close to the plug-in structure 22 has a guide slope 211, the plug-in structure 22 is arranged on the second clip 21, and the plug-in structure 22 has a convex rib 221 protruding toward the second clip 21, and the extension direction of the guide slope 211 is inclined to the extension direction of the convex rib 221. When the plug-in structure 22 is driven, the convex rib 221 moves downward, and the convex rib 221 abuts against the guide slope 211, thereby driving the second clip 21 to move horizontally, so that the second clip 21 moves inward, and the second clip 21 is disengaged from the first clip 11.

[0053] Among them, the second clip 21 can include two, the two second clips 21 are arranged opposite to each other, and each second clip 21 has a limiting column 212 on the side facing the other second clip 21. Correspondingly, the plug-in structure 22 has two convex ribs 221, and the two convex ribs 221 correspond one-to-one to the two second clips 21. When the plug-in structure 22 is driven, the two second clips 21 move toward each other until the two limiting columns 212 abut against each other. At this time, the second clip 21 is disengaged from the first clip 11, and the cleaning unit 20 can be disengaged from the walking unit 10, which is convenient for operation.

[0054] like Figure 2 As shown, in some embodiments, a driving structure 30 is further provided on the walking unit 10, and the driving structure 30 is connected to the cleaning unit 20 to drive the cleaning unit 20 to rotate around the side of the walking unit 10. For example, the driving structure 30 includes a driving motor and an output shaft. The driving motor is arranged inside the walking unit 10, and the output shaft can extend out of the walking unit 10 and connect with the cleaning unit 20, thereby driving the cleaning unit 20 to rotate. Here, the output shaft can be connected to the driving shaft of the driving motor through a transmission structure, or it can be directly connected.

[0055] In addition, the travel unit 10 also has travel wheels and a driving member for driving the travel wheels to rotate. The driving member here can share a motor with the cleaning unit 20, or can be two independently arranged motors.

[0056] like Figure 1-Figure 5 As shown, in some specific embodiments, the cleaning unit 20 includes a bracket 23, which is detachably connected to the walking unit 10. The bracket 23 is roughly hat-shaped, and a cleaning piece is provided at the edge of the bracket 23. The cleaning piece can be sleeved on the edge of the bracket 23, or the cleaning piece is connected to the side of the bracket 23 facing the surface to be cleaned, and the cleaning piece is used to clean the surface to be cleaned.

[0057] The driving structure 30 is arranged in the walking unit 10, and the driving structure 30 has an output shaft. The walking unit 10 has a groove 14, and a part of the output shaft extends into the groove 14. The bracket 23 has a matching portion 231 protruding toward the groove 14. A positioning groove is formed on the side of the matching portion 231 facing the output shaft. The positioning groove is matched and connected with the output shaft, for example, snap-fitted, thereby realizing the matching of the output shaft and the cleaning unit 20, so that the driving structure 30 can drive the cleaning unit 20 to rotate.

[0058] In addition, a mating groove is defined on the side of the mating portion 231 that faces away from the output shaft, in which the plug-in structure 22 and the second clip 21 are installed. The side wall of the mating portion 231 has a plurality of insertion holes 232. A portion of the second clip 21 can extend out of the insertion hole 232 to cooperate with the first clip 11. The first clip 11 is installed in the walking unit 10 through a bearing 12. When the driving structure 30 drives the cleaning unit 20 to rotate relative to the walking unit 10, the first clip 11 can be driven to rotate by the second clip 21, thereby reducing the relative activity between the first clip 11 and the second clip 21, thereby reducing the wear of the two and reducing the friction noise.

[0059] In addition, the plug-in structure 22 also has a hook 222, which is engaged with the socket 232 to achieve fixed installation of the plug-in structure 22. At the same time, one of the second clip 21 and the plug-in structure 22 has a guide bevel 211, and the other has a rib 221. The extension direction of the rib 221 is the same as the axial direction of the output shaft, and the angle between the extension direction of the rib 221 and the extension direction of the guide bevel 211 is 45°. The guide bevel 211 and the rib 221 are slidably engaged. When the plug-in structure 22 is driven to move vertically, the second clip 21 is driven to move horizontally. The second clip 21 moves in the direction of the central axis of the output shaft, and the second clip 21 is disengaged from the first clip 11. As a result, the cleaning unit 20 can be disengaged from the walking unit 10, thereby achieving the disassembly of the cleaning unit 20 and the walking unit 10.

[0060] Other structures and operations of the cleaning device 100 according to the embodiment of the utility model are known to those skilled in the art and will not be described in detail here. The up-down direction, left-right direction and front-back direction are based on the up-down direction, left-right direction and front-back direction shown in the figure.

[0061] In the description of the present utility model, unless otherwise clearly specified and limited, a first feature "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature "above", "above" and "above" a second feature include that the first feature is directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A cleaning device, characterized in that: include: A walking unit, the walking unit is used to walk on the surface to be cleaned and is provided with a rotatable first clamping member; A cleaning unit, wherein a second clamping piece is provided on the cleaning unit and is clamped with the first clamping piece. The cleaning unit can rotate around the side of the walking unit to clean the surface to be cleaned. The rotation of the cleaning unit around the side of the walking unit can drive the first clamping piece to rotate relative to the walking unit through the second clamping piece.

2. The cleaning device according to claim 1, characterized in that The first clamping piece is rotatably arranged on the travel unit via a bearing, one of the first clamping piece and the travel unit is fixed to the inner ring of the bearing, and the other of the first clamping piece and the travel unit is fixed to the outer ring of the bearing.

3. The cleaning device according to claim 1 or 2, characterized in that: The first clamping member comprises a clamping portion, and the clamping portion is arranged on a side of the second clamping member away from the surface to be cleaned, so as to prevent the second clamping member from moving in a direction away from the surface to be cleaned.

4. The cleaning device according to claim 3, characterized in that: The first clamping member further comprises a mounting portion connected to the clamping portion, and the mounting portion is rotatably disposed on the walking unit.

5. The cleaning device according to claim 4, characterized in that: The mounting portion is rotatably arranged on the walking unit through a bearing, and the mounting portion includes a first ring and a second ring connected to each other, the first ring is sleeved with one of the inner ring and the outer ring of the bearing, and the second ring is fixed to the end face of one of the inner ring and the outer ring of the bearing.

6. The cleaning device according to claim 5, characterized in that: The clamping portion is arranged at an end of the first ring away from the surface to be cleaned and extends to a side away from the bearing. The second ring is arranged at an end of the first ring close to the surface to be cleaned and extends to a side close to the bearing.

7. The cleaning device according to any one of claims 1, 2, 4 to 6, characterized in that: The walking unit is also provided with a shielding portion, and the shielding portion is arranged on a side of the first clamping member away from the surface to be cleaned, so as to shield the first clamping member.

8. The cleaning device according to any one of claims 1, 2, 4 to 6, characterized in that: A groove is provided at the top center of the walking unit, and a plug-in structure is provided at the corresponding position of the cleaning unit. The plug-in structure is plugged into the groove, and the second clamping piece is protrudingly arranged on the peripheral side of the plug-in structure to be clamped with the first clamping piece.

9. The cleaning device according to claim 8, characterized in that The second clamping member is movably connected to the plug-in structure, and the second clamping member can be disengaged from the first clamping member by moving toward the central axis of the walking unit, and the central axis is perpendicular to the surface to be cleaned.

10. The cleaning device according to any one of claims 1, 2, 4 to 6, characterized in that: The walking unit is also provided with a driving structure, and the driving structure is connected to the cleaning unit to drive the cleaning unit to rotate around the side of the walking unit.

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