Driving structure, mopping module and cleaning equipment

Abstract

The embodiment of the utility model provides a driving structure, a mopping module and cleaning equipment. The driving structure comprises a shell assembly, a transmission assembly, a driving motor and a limiting piece. The driving shell is arranged on the shell assembly, and the driving shaft is in driving connection with the first transmission part of the transmission assembly; a limiting piece is arranged at the end, away from the driving shell, of the driving shaft, the driving shaft extends to the limiting piece, and the limiting piece is matched with at least one of the first transmission piece and the driving shaft to limit radial movement of the driving shaft. Therefore, radial force can be transmitted to the shell assembly from the two ends of the driving shaft, and the situation that the force is transmitted from only one end of the driving shaft is avoided. Therefore, the force transmission of the driving shaft is more uniform, and the risk of deflection of the motor shaft can be reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of cleaning, in particular to a driving structure, a mopping module and a cleaning device. BACKGROUND

[0002] In modern life, cleaning devices are becoming more and more popular, bringing convenience to family life. For example, cleaning devices such as sweeping robots, mopping robots and sweeping and mopping integrated robots are widely used. Among them, in the driving structure of the mopping module, the driving motor drives the transmission assembly to drive the mop to move.

[0003] However, in the related art, the driving shaft of the driving motor is a cantilever shaft. During the movement of the mop plate, part of the reaction force in the driving structure will act on the driving shaft along the radial direction of the driving shaft through the transmission assembly, so that the motor shaft is easily inclined, thereby causing the motor to easily produce abnormal conditions such as abnormal noise, shaft breakage or motor hole expansion. CONTENT OF THE UTILITY MODEL

[0004] Therefore, the main purpose of the embodiments of the present application is to provide a driving structure, a mopping module and a cleaning device which can reduce the risk of motor shaft inclination.

[0005] To achieve the above purpose, the technical scheme of the embodiments of the present application is as follows:

[0006] The first aspect of the embodiments of the present application provides a driving structure for a mopping module of a cleaning device, the driving structure comprising:

[0007] a housing assembly;

[0008] a transmission assembly movably arranged on the housing assembly for driving the mop plate to move, the transmission assembly comprising a first transmission member;

[0009] a driving motor comprising a driving housing and a driving shaft extending to the outside of the driving housing, the driving housing being arranged on the housing assembly, and the driving shaft being drivingly connected with the first transmission member;

[0010] a limiting member arranged at the end of the driving shaft away from the driving housing, and the driving shaft extending to the limiting member, the limiting member cooperating with at least one of the first transmission member and the driving shaft to limit the radial movement of the driving shaft.

[0011] In an embodiment, the limiting member has a limiting cavity, and part of at least one of the first transmission member and the driving shaft extends into the limiting cavity and is limited by contacting the cavity wall of the limiting cavity.

[0012] In one embodiment, the first transmission member comprises a first gear, the first gear is sleeved on the drive shaft, the drive motor is in driving connection with the first gear, the first gear has a connecting end on a side away from the drive shell, at least a part of the connecting end extends into the limiting cavity, and a cavity wall of the limiting cavity limits radial movement of the first gear and the drive shaft by being in contact with the connecting end.

[0013] In one embodiment, the first gear comprises an external gear and a gear shaft having a first through hole, the drive shaft is arranged in the first through hole, and the external gear is sleeved on an outer side of the gear shaft, an end of the gear shaft away from the drive shell protrudes relative to the external gear to form the connecting end.

[0014] In one embodiment, the limiting member is a sleeve or bearing having the limiting cavity, and the limiting cavity is open on at least one side in the axial direction.

[0015] In one embodiment, a part of the shell assembly is recessed to form a receiving groove, and the limiting member is rotatably arranged in the receiving groove.

[0016] In one embodiment, the shell assembly has a mounting cavity, at least a part of the transmission assembly is arranged in the mounting cavity, a cavity wall on one side of the mounting cavity is provided with the limiting member, and the drive shaft extends from the other side of the mounting cavity into the mounting cavity to be in limiting cooperation with the limiting member.

[0017] In one embodiment, the shell assembly comprises a middle frame and an upper cover, the middle frame and the upper cover enclose to form the mounting cavity, the limiting member is arranged on a side of the upper cover close to the mounting cavity, an outer surface of a side of the middle frame away from the upper cover is recessed to form a clamping groove, a part of a groove wall of the clamping groove is penetrated to form a second through hole, a part of the drive shell is arranged in the clamping groove, and the drive shaft extends into the mounting cavity through the second through hole to be in limiting cooperation with the limiting member.

[0018] In one embodiment, the transmission assembly further comprises a second transmission member, the second transmission member comprises a second gear, a cam and an elastic member, the second gear and the cam are rotatably arranged on the shell assembly, the second gear is in driving connection with the first transmission member, the cam is in driving connection with the second gear, opposite ends of the elastic member are connected with the shell assembly and the cam respectively, and the cam rotates under the action of the second gear and the elastic member to drive the mop plate to move.

[0019] The second aspect of the embodiments of the present application provides a mopping module, which comprises the driving structure described in any one of the above.

[0020] The third aspect of the embodiments of the present application provides a cleaning device, which comprises the mopping module as described in any one of the above.

[0021] The embodiments of the present application provide a driving structure, a mopping module and a cleaning device. The driving structure comprises a housing assembly, a transmission assembly, a driving motor and a limiting piece. A driving shell of the driving motor is arranged on the housing assembly, and a driving shaft is drivingly connected with a first transmission piece. An end of the driving shaft, which is away from the driving shell, is provided with the limiting piece, and the driving shaft extends to the limiting piece. The limiting piece cooperates with at least one of the first transmission piece and the driving shaft to limit the radial movement of the driving shaft. In this way, the limiting piece limits the radial movement of the driving shaft from the end of the driving shaft away from the driving shell, so that the radial force acting on the driving shaft in the driving structure can be transmitted to the limiting piece and then to the housing assembly. At the same time, since the driving shell is arranged on the housing assembly, the radial force can be transmitted to the housing assembly from both ends of the driving shaft, rather than from only one end of the driving shaft. This can make the driving shaft transmit force more uniformly, thereby reducing the risk of motor shaft skewing and reducing the occurrence of abnormal conditions such as motor abnormal noise, shaft breakage or motor hole reaming. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 FIG. 1 is a structural schematic diagram of a driving structure according to an embodiment of the present application;

[0023] Figure 2 FIG. 2 is a top view of the driving structure of FIG. 1; Figure 1

[0024] Figure 3 FIG. 3 is a structural schematic diagram of the driving structure of FIG. 1 after the upper cover is removed; Figure 2

[0025] Figure 4 FIG. 4 is a structural schematic diagram of the driving structure of FIG. 1 after the upper cover of the driving structure is separated from the middle frame; Figure 1

[0026] Figure 5 FIG. 5 is a structural schematic diagram of the upper cover of FIG. 4 from another perspective; Figure 4

[0027] Figure 6 FIG. 6 is a schematic diagram of the cooperation relationship between the limiting piece, the driving motor and the first gear of FIG. 1; Figure 4

[0028] Figure 7 FIG. 7 is an exploded view of the driving structure of FIG. 1; Figure 6

[0029] Figure 8 FIG. 8 is a structural schematic diagram of the middle frame of FIG. 1; and Figure 4 FIG. 9 is a structural schematic diagram of the middle frame of FIG. 1.​​​​​​

[0030] Figure 9 for Figure 1 A cross-sectional view of the driving structure;

[0031] Figure 10 for Figure 9 A magnified view of a portion of point A in the middle.

[0032] Explanation of reference numerals in the attached figures

[0033] 10. Housing assembly; 10a. Receiving groove; 10b. Mounting cavity; 11. Middle frame; 11a. Second through hole; 11b. Snap-fit ​​groove; 12. Top cover; 20. Transmission assembly; 21. First transmission component; 210. First gear; 211. Connecting end; 212. External gear; 213. Gear shaft; 213a. First through hole; 22. Second transmission component; 221. Second gear; 222. Cam; 223. Elastic component; 30. Drive motor; 31. Drive housing; 32. Drive shaft; 40. Limiting component; 40a. Limiting cavity. Detailed Implementation

[0034] In this application, "radial" orientation or positional relationship is based on the appendix. Figure 10 The orientation or positional relationship shown is for illustrative purposes only and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of this application.

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the accompanying drawings. The described embodiments should not be regarded as limitations on this application. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0036] In the description of the embodiments of this application, technical terms such as "first," "second," and "third" are used only to distinguish different objects and should not be construed as indicating or implying relative importance or implicitly specifying the number, specific order, or primary and secondary relationship of the indicated technical features. In the description of the embodiments of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0037] Unless otherwise defined, all technical and scientific terms used in the embodiments of this application have the same meaning as commonly understood by one of ordinary skill in the art. The terminology used in the embodiments of this application is for the purpose of describing the embodiments of this application only and is not intended to limit this application.

[0038] One embodiment of this application provides a drive structure for a mopping module of a cleaning device. Please refer to [link / reference]. Figure 1 andFigure 4 The driving structure comprises a housing assembly 10, a transmission assembly 20, a driving motor 30 and a limiting member 40.

[0039] The transmission assembly 20 is movably arranged on the housing assembly 10 for driving the mop plate to move, and the transmission assembly 20 comprises a first transmission member 21.

[0040] Please refer to Figure 9 and Figure 10 The driving motor 30 comprises a driving housing 31 and a driving shaft 32 extending out of the driving housing 31, the driving housing 31 is arranged on the housing assembly 10, and the driving shaft 32 is drivingly connected with the first transmission member 21. The end of the driving shaft 32 away from the driving housing 31 is provided with the limiting member 40, the driving shaft 32 extends to the limiting member 40, and the limiting member 40 cooperates with at least one of the first transmission member 21 and the driving shaft 32 to limit the radial movement of the driving shaft 32.

[0041] Specifically, the housing assembly 10 is a housing structure of the driving structure, which is used for mounting the transmission assembly 20, the driving motor 30, the limiting member 40 and the mop plate, etc.

[0042] The transmission assembly 20 has a transmission function, which can transmit the driving force of the driving motor 30 to the mop plate to drive the mop plate to move.

[0043] The driving shaft 32 of the driving motor 30 extends out of the driving housing 31, and the driving housing 31 is mounted on the housing assembly 10. When the driving motor 30 rotates, the driving shaft 32 of the driving motor 30 can drive the first transmission member 21 to move, thereby driving the mop plate to move.

[0044] It should be noted that the movement mode of the mop plate can be determined according to actual conditions.

[0045] For example, the driving motor 30 is a telescopic motor, and under the driving action of the driving motor 30 and the transmission assembly 20, the mop plate extends out of the shell of the cleaning device along the horizontal direction and is retracted into the shell of the cleaning device along the horizontal direction.

[0046] For another example, under the driving action of the driving motor 30 and the transmission assembly 20, the mop plate can also be capable of ascending and descending along the height direction, and can also be capable of rotating around the shaft, thereby driving the mop to perform cleaning operation.

[0047] In fact, the driving shaft 32 comprises an end away from the driving housing 31 (i.e. the extending end) and an end close to the driving housing 31 (i.e. the connecting end). The limiting member 40 is arranged on the housing assembly 10, and the limiting member 40 is located at the end of the driving shaft 32 away from the driving housing 31, i.e. the extending end, and the limiting member 40 can limit the radial movement of the driving shaft 32 from the side of the extending end of the driving shaft 32.

[0048] And the end of the drive shaft 32 close to the drive housing 31 (i.e. the connection end) is connected with the drive housing 31, and the drive housing 31 is arranged on the shell assembly 10, so that the drive housing 31 can limit the drive shaft 32 from the side of the connection end of the drive shaft 32. In this way, the two ends of the drive shaft 32 can be limited.

[0049] During the movement of the drag plate, when the reaction force acts on the drive shaft 32 along the radial direction of the drive shaft 32 through the first transmission member 21, due to the limiting effect of the limiting member 40 on the extended end of the drive shaft 32, part of the radial force can be transmitted from the limiting member 40 to the shell assembly 10. At the same time, due to the limiting effect of the drive housing 31 on the connection end of the drive shaft 32, the other part of the radial force can be transmitted from the side of the drive housing 31 to the shell assembly 10. In this way, the drive shaft 32 can transmit force from both ends, and compared with the related art which only transmits force from one end, the driving structure of the embodiment has better force transmission effect.

[0050] It should be noted that since the drive shaft 32 is drivingly connected with the first transmission member 21, according to actual conditions, the limiting member 40 can be limited to cooperate with the drive shaft 32 to limit the radial movement of the drive shaft 32. It can also be limited to cooperate with the first transmission member 21 to indirectly limit the radial movement of the drive shaft 32. It can also be limited to cooperate with the drive shaft 32 and the first transmission member 21 to limit the radial movement of the drive shaft 32.

[0051] In the driving structure of the embodiment, the limiting member 40 limits the radial movement of the drive shaft 32 from the end of the drive shaft 32 away from the drive housing 31, so that the radial force acting on the drive shaft 32 in the driving structure can be transmitted to the limiting member 40 and then to the shell assembly 10. At the same time, since the drive housing 31 is arranged on the shell assembly 10, the radial force can be transmitted to the shell assembly 10 from both ends of the drive shaft 32, without making the drive shaft 32 transmit force from only one end. This can make the drive shaft 32 transmit force more evenly, thereby reducing the risk of motor shaft skewing, and reducing the occurrence of abnormal conditions such as motor abnormal noise, shaft breakage or motor hole expansion.

[0052] The specific shape of the limiting member 40 and the cooperation mode with the first transmission member 21 and / or the drive shaft 32 can be determined according to actual conditions.

[0053] For example, please refer to Figure 7 and Figure 10The limiting member 40 has a limiting cavity 40a, and at least one of the first transmission member 21 and the driving shaft 32 has a part region extending into the limiting cavity 40a and being limited by contacting with the cavity wall of the limiting cavity 40a. Thus, the driving shaft 32 can be conveniently limited in the radial direction.

[0054] Specifically, the part region of the first transmission member 21 can extend into the limiting cavity 40a, and the cavity wall of the limiting cavity 40a contacts the part region of the first transmission member 21 extending into the limiting cavity 40a from the circumferential direction, so as to limit the displacement of the driving shaft 32 in the radial direction.

[0055] Alternatively, the part region of the driving shaft 32 can extend into the limiting cavity 40a, and the cavity wall of the limiting cavity 40a contacts the part region of the driving shaft 32 extending into the limiting cavity 40a from the circumferential direction, so as to limit the displacement of the driving shaft 32 in the radial direction.

[0056] Of course, the part region of the driving shaft 32 and the part region of the first transmission member 21 can both contact the cavity wall of the limiting cavity 40a for limiting in the radial direction.

[0057] In some embodiments, the limiting member 40 can contact the driving shaft 32 and / or the first transmission member 21 for force transmission only when the driving shaft 32 is subjected to the radial force, and not contact the driving shaft 32 and / or the first transmission member 21 when the driving shaft 32 is not subjected to the radial force.

[0058] According to actual conditions, in other embodiments, the limiting member 40 can always contact the driving shaft 32 and / or the first transmission member 21 for limiting.

[0059] In an embodiment, the driving structure includes a plurality of limiting members 40, and the limiting members 40 are limiting blocks which are arranged at intervals in the circumferential direction of the driving shaft 32, so as to limit the radial movement of the driving shaft 32 by contacting the driving shaft 32, thereby facilitating the transmission of the radial force acting on the driving shaft 32 to the housing assembly 10.

[0060] In an embodiment, referring to Figure 6 , Figure 7 and Figure 10 , the first transmission member 21 includes a first gear 210, the first gear 210 is sleeved on the driving shaft 32, the driving motor 30 is drivingly connected with the first gear 210, the first gear 210 has a connecting end 211 on the side away from the driving shell 31, at least part of the connecting end 211 extends into the limiting cavity 40a, and the cavity wall of the limiting cavity 40a contacts the connecting end 211 for limiting the radial movement of the first gear 210 and the driving shaft 32. Thus, the driving shaft 32 can be limited in the radial direction by limiting the first gear 210 in the radial direction, thereby achieving a better force transmission effect.

[0061] Specifically, the first gear 210 is coaxially arranged with the driving shaft 32, and when the driving shaft 32 rotates, the first gear 210 can rotate together.

[0062] The first gear 210 is sleeved on the outer circumferential side of the driving shaft 32, and thus the connecting end 211 of the first gear 210 is in contact with the cavity wall of the limiting cavity 40a, so as to limit the radial movement of the first gear 210, and further limit the radial movement of the driving shaft 32.

[0063] It should be noted that the specific structure of the first gear 210 can be set according to actual conditions.

[0064] For example, referring to Figure 6 , Figure 7 and Figure 10 , the first gear 210 includes an external gear 212 and a gear shaft 213 with a first through hole 213a, the driving shaft 32 is arranged in the first through hole 213a, the external gear 212 is sleeved on the outer side of the gear shaft 213, and the end of the gear shaft 213 away from the driving housing 31 protrudes relative to the external gear 212 to form the connecting end 211. Thus, while meeting the limiting requirements of the first gear 210, the size of the limiting cavity 40a and the limiting member 40 can be reduced as much as possible.

[0065] Specifically, the driving shaft 32 can drive the gear shaft 213 to rotate, and further drive the external gear 212 to rotate. The connecting end 211 of the gear shaft 213 protrudes relative to the end face of the external gear 212, which can facilitate cooperation with the limiting cavity 40a.

[0066] The shape of the connecting end 211 can match the shape of the limiting cavity 40a.

[0067] For example, the cross-sectional shape of the connecting end 211 and the limiting cavity 40a is circular, thereby reducing the limiting effect of the limiting member 40 on the rotation of the first gear 210.

[0068] The specific shape of the first through hole 213a can be set according to actual conditions.

[0069] For example, on the outer circumferential surface of the driving shaft 32, the driving shaft 32 has a side flat surface on each of the opposite sides in a first direction, and has a side arc surface on each of the opposite sides in a second direction, and the adjacent side flat surface and side arc surface are connected, wherein the first direction and the second direction are perpendicular to each other. The shape of the first through hole 213a matches the shape of the driving shaft 32. That is, the driving shaft 32 is a flat shaft rather than a circular shaft, thereby facilitating the driving shaft 32 to drive the first gear 210 to rotate.

[0070] In an embodiment, the limiting member 40 is a shaft sleeve or bearing with a limiting cavity 40a, which is open at least on one side in the axial direction. That is, the limiting cavity 40a can be open on one side in the axial direction, or open on opposite sides in the axial direction, so that the limiting member 40, the first transmission member 21 and the drive shaft 32 can be conveniently installed.

[0071] In addition, the limiting member 40 can be a bearing, which can improve the force transmission effect. Of course, the limiting member 40 can also be a shaft sleeve, which can reduce the cost and simplify the structure.

[0072] In an embodiment, referring to Figure 5 and Figure 10 , the housing assembly 10 has a recessed portion forming a receiving groove 10a, and the limiting member 40 is rotatably arranged in the receiving groove 10a. In this way, the connection stability between the limiting member 40 and the housing assembly 10 can be improved, and the limiting member 40 can conveniently transmit the radial force to the housing assembly 10. At the same time, since the limiting member 40 is rotatable, the influence of the limiting member 40 on the rotation of the first transmission member 21 and the drive shaft 32 can be reduced.

[0073] Of course, in other embodiments, the limiting member 40 can also be fixedly installed in the receiving groove 10a, and cannot move relative to the housing assembly 10.

[0074] In an embodiment, referring to Figure 4 and Figure 10 , the housing assembly 10 has a mounting cavity 10b, at least part of the transmission assembly 20 is located in the mounting cavity 10b, and a cavity wall on one side of the mounting cavity 10b is provided with the limiting member 40. The drive shaft 32 extends from the other side of the mounting cavity 10b into the mounting cavity 10b to limit the limiting member 40. In this way, the drive shaft 32 and the limiting member 40 can be avoided from being exposed, so that the housing assembly 10 can better protect the drive shaft 32 and the limiting member 40.

[0075] Specifically, the transmission assembly 20 can be only partially located in the mounting cavity 10b, or can be entirely located in the mounting cavity 10b.

[0076] At least part of the drive housing 31 is located outside the housing assembly 10, and the drive shaft 32 extends into the mounting cavity 10b from the side of the mounting cavity 10b away from the limiting member 40 to limit the limiting member 40.

[0077] In an embodiment, referring to Figure 4 and Figure 8The shell assembly 10 comprises a middle frame 11 and an upper cover 12, the middle frame 11 and the upper cover 12 enclose to form a mounting cavity 10b, the limiting piece 40 is arranged on the side of the upper cover 12 close to the mounting cavity 10b, the outer surface of the side of the middle frame 11 away from the upper cover 12 is recessed to form a clamping groove 11b, a part of the groove wall of the clamping groove 11b is formed with a second through hole 11a, a part of the driving shell 31 is located in the clamping groove 11b, and the driving shaft 32 extends into the mounting cavity 10b through the second through hole 11a to be limited and matched with the limiting piece 40. Therefore, the mounting stability of the driving shell 31 on the middle frame 11 can be improved, and the driving shaft 32 can be conveniently extended into the mounting cavity 10b to achieve a better driving effect.

[0078] Specifically, the connection mode of the middle frame 11 and the upper cover 12 can be set according to actual conditions, such as a detachable connection mode of fastening connection, clamping, etc.

[0079] The clamping groove 11b is formed by recessing the outer surface of the middle frame 11, and is used for mounting the driving shell 31. The opposite sides of the second through hole 11a are in communication with the mounting cavity 10b and the clamping groove 11b respectively, so that the driving shaft 32 can pass through the second through hole 11a and enter the mounting cavity 10b.

[0080] In an embodiment, please refer to 2 to Figure 4 The transmission assembly 20 further comprises a second transmission piece 22, the second transmission piece 22 comprises a second gear 221, a cam 222 and an elastic piece 223, the second gear 221 and the cam 222 are rotatably arranged on the shell assembly 10, the second gear 221 is in transmission connection with the first transmission piece 21, the cam 222 is in transmission connection with the second gear 221, the opposite ends of the elastic piece 223 are connected with the shell assembly 10 and the cam 222 respectively, and the cam 222 rotates under the action of the second gear 221 and the elastic piece 223 to drive the drag plate to move. Therefore, a better force transmission effect can be achieved.

[0081] Specifically, in the driving structure, the driving motor 30 can directly drive the first transmission piece 21 to move, the first transmission piece 21 drives the second gear 221 to rotate, and the second gear 221 drives the cam 222 to rotate. The cam 222 can realize the extension of the drag plate by rotating. In this process, the elastic piece 223 can generate an elastic force by elastic deformation to act on the cam 222, so as to cooperate with the driving motor 30 to realize the retraction and reset of the drag plate.

[0082] In fact, since the elastic piece 223 and the driving motor 30 jointly exert force on the cam 222, an opposite force is easily generated in the driving structure during the rotation of the cam 222 and acts on the motor shaft. Therefore, by arranging the limiting piece 40, the driving shaft 32 can realize double-end force transmission, so that the driving shaft 32 has a better force transmission effect.

[0083] Another embodiment of the present application provides a mopping module, which comprises the driving structure according to any embodiment of the present application.

[0084] Still another embodiment of the present application provides a cleaning device, which comprises the mopping module according to any embodiment of the present application.

[0085] Specifically, the cleaning device is a device with the mopping module, which can be a self-moving cleaning device or other automatic cleaning device meeting the requirements. For example, a sweeping robot, a mopping robot, and a sweeping and mopping integrated robot.

[0086] In the description of the present application, the description with reference to the terms "in an embodiment", "in some embodiments", "in a specific embodiment", or "exemplary" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the embodiments of the present application. In the present application, the exemplary description of the above terms is not necessarily directed to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, a person skilled in the art can combine different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0087] The above is only the preferred embodiment of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application is included in the protection scope of the present application.

Claims

1. A driving structure for a mopping module of a cleaning device, characterized in that, The driving structure comprises: a housing assembly (10); a transmission assembly (20) movably arranged on the housing assembly (10) for driving a drag plate to move, the transmission assembly (20) comprising a first transmission member (21); a driving motor (30) comprising a driving housing (31) arranged on the housing assembly (10) and a driving shaft (32) extending out of the driving housing (31), the driving shaft (32) being in driving connection with the first transmission member (21); a limiting member (40) arranged at an end of the driving shaft (32) away from the driving housing (31), the driving shaft (32) extending to the limiting member (40), and the limiting member (40) being in cooperation with at least one of the first transmission member (21) and the driving shaft (32) to limit radial movement of the driving shaft (32).

2. The drive structure of claim 1, wherein The limiting member (40) has a limiting cavity (40a), and a partial area of at least one of the first transmission member (21) and the driving shaft (32) extends into the limiting cavity (40a) and is limited by the cavity wall of the limiting cavity (40a).

3. The drive structure of claim 2, wherein, The first transmission member (21) comprises a first gear (210) sleeved on the driving shaft (32), the driving motor (30) is in driving connection with the first gear (210), and one side of the first gear (210) away from the driving housing (31) has a connecting end (211), at least a partial area of the connecting end (211) extends into the limiting cavity (40a), and the cavity wall of the limiting cavity (40a) limits radial movement of the first gear (210) and the driving shaft (32) by contacting the connecting end (211).

4. The drive structure of claim 3, wherein The first gear (210) comprises an external gear (212) and a gear shaft (213) having a first through hole (213a), the driving shaft (32) passes through the first through hole (213a), the external gear (212) is sleeved on the outside of the gear shaft (213), and an end of the gear shaft (213) away from the driving housing (31) protrudes relative to the external gear (212) to form the connecting end (211).

5. The drive structure of claim 2, wherein The limiting member (40) is a shaft sleeve or bearing having the limiting cavity (40a), and at least one side of the limiting cavity (40a) is open in the axial direction.

6. The drive structure according to any one of claims 1 to 5, wherein A partial area of the housing assembly (10) is recessed to form a containing groove (10a), and the limiting member (40) is rotatably arranged in the containing groove (10a).

7. The drive structure according to any one of claims 1 to 5, wherein The housing assembly (10) has a mounting cavity (10b) in which at least part of the transmission assembly (20) is located, a cavity wall of one side of the mounting cavity (10b) is provided with the limiting member (40), and the drive shaft (32) extends from the other side of the mounting cavity (10b) into the mounting cavity (10b) to be limitedly matched with the limiting member (40).

8. The drive structure of claim 7, wherein, The housing assembly (10) comprises a middle frame (11) and an upper cover (12), the middle frame (11) and the upper cover (12) enclose the mounting cavity (10b), the limiting member (40) is arranged on a side of the upper cover (12) close to the mounting cavity (10b), an outer surface of a side of the middle frame (11) away from the upper cover (12) is recessed to form a clamping groove (11b), part of a groove wall of the clamping groove (11b) is through-formed to form a second through hole (11a), part of the drive housing (31) is located in the clamping groove (11b), and the drive shaft (32) extends into the mounting cavity (10b) through the second through hole (11a) to be limitedly matched with the limiting member (40).

9. The drive structure of any one of claims 2-4, wherein, The transmission assembly (20) further comprises a second transmission member (22), the second transmission member (22) comprises a second gear (221), a cam (222) and an elastic member (223), the second gear (221) and the cam (222) are rotatably arranged on the housing assembly (10), the second gear (221) is in transmission connection with the first transmission member (21), the cam (222) is in transmission connection with the second gear (221), opposite ends of the elastic member (223) are connected with the housing assembly (10) and the cam (222) respectively, and the cam (222) rotates under the action of the second gear (221) and the elastic member (223) to drive the mop plate to move.

10. A mopping module characterized in that, The mopping module comprises the driving structure according to any one of claims 1-9.

11. A cleaning apparatus, characterized by The cleaning device comprises the mopping module according to claim 10.

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