Mop lifting structure and cleaning device

Abstract

The present application provides a mop lifting structure and cleaning equipment, the mop lifting structure comprises: a driving device, comprising an output shaft and a pusher fixedly connected with the output shaft; a transmission device connected with the driving device, comprising a cam assembly, the cam assembly is provided with a cam profile with height difference; the end of the pusher away from the driving device abuts against the cam profile, the output shaft drives the pusher to rotate circumferentially, and drives the cam assembly to move in the vertical direction and / or circumferentially move in the horizontal direction through the pusher. The mop lifting structure of the present application can effectively drive the mop unit to lift or descend, the overall structure is simple, production and assembly are convenient and fast, have strong practicality, effectively prolong the service life of the cleaning equipment, improve the user experience.

Description

Technical Field

[0001] This invention relates to the field of household cleaning appliances, and more particularly to a mop lifting structure and cleaning equipment. Background Technology

[0002] As people's work pace accelerates and their living standards continue to rise, they are increasingly accustomed to using smart cleaning appliances to replace manual labor in tasks such as sweeping, vacuuming, and mopping. Among these, new intelligent robot vacuums and mops are particularly popular.

[0003] Most robotic vacuum and mop systems on the market now use dual-disc mops. In home use, to prevent wet mops from soiling carpets, the mop needs to have a lifting function. Most products with mop lifting functions currently on the market use a screw mechanism for lifting. This design is complex, requires high manufacturing precision, has a high failure rate, leads to a poor user experience, affects the product's lifespan, and incurs significant costs.

[0004] In view of this, it is indeed necessary to provide a mop lifting structure and cleaning equipment to solve the above problems. Summary of the Invention

[0005] The purpose of this invention is to provide a mop lifting structure and cleaning equipment that can realize the functions of raising and lowering the mop.

[0006] To achieve the above objectives, the present invention provides a mop lifting structure, comprising:

[0007] The drive device includes an output shaft and a pusher fixedly connected to the output shaft;

[0008] A transmission device, connected to the drive device, includes a cam assembly, wherein the cam assembly is provided with a cam profile having a height difference;

[0009] The end of the pusher away from the drive device abuts against the cam profile. The output shaft drives the pusher to rotate circumferentially, and through the pusher, drives the cam assembly to move vertically and / or circumferentially in the horizontal direction.

[0010] As a further improvement of the present invention, the cam assembly includes a first position and a second position in the vertical direction, and the height of the first position is higher than the height of the second position. When the height of the cam assembly is greater than the height of the first position, the pusher drives the cam assembly to rotate circumferentially in the horizontal direction, while the cam assembly descends in the vertical direction. When the height of the cam assembly is at the first position, the cam assembly engages with the drive device and stops rotating circumferentially. When the height of the cam assembly is between the first position and the second position, the pusher rotates circumferentially and pushes the cam assembly to descend in the vertical direction. When the cam assembly is at the second position, the cam assembly stops descending and is driven by the pusher to rotate circumferentially in the horizontal direction.

[0011] As a further improvement of the present invention, the transmission device further includes an elastic component disposed within the cam assembly. When the cam assembly descends, the cam assembly compresses the elastic component, and when the cam assembly rises, the elastic component applies an upward force to the cam assembly.

[0012] As a further improvement of the present invention, the cam assembly includes an inner cam shaft, the inner cam shaft having a snap-fit ​​portion inside, and the elastic component being at least partially connected to the snap-fit ​​portion.

[0013] As a further improvement of the present invention, the elastic component includes an elastic element and a fastener. The fastener is disposed at the bottom of the output shaft and configured to be assembled with the output shaft. The snap-fit ​​portion is disposed at the top of the cam assembly. One end of the elastic element is connected to the snap-fit ​​portion, and the other end abuts against the fastener. When the cam assembly moves downward, the top of the cam assembly compresses the elastic element downward.

[0014] As a further improvement of the present invention, the cam profile includes a beginning end and a end end, with a height difference between the beginning end and the end end, and the cam profile is a continuous arc line; or, the cam profile includes a straight section and an arc section, with at least two straight sections respectively disposed at the beginning end and the end end, and the arc section disposed between the straight sections.

[0015] As a further improvement of the present invention, the height of the tail end is greater than the height of the head end, and a stop block is provided on the tail end. The stop block is disposed on the movement path of the pusher and is configured to limit the pusher.

[0016] As a further improvement of the present invention, the outer side of the cam assembly is provided with a cam ear extending in a vertical direction, the cam ear being located outside the stop block and configured to be movably connected to the drive device.

[0017] As a further improvement of the present invention, the driving device includes a gearbox assembly, the gearbox assembly includes a first housing, the output shaft is installed in the first housing, and the inner wall of the first housing is provided with a baffle extending in the vertical direction.

[0018] As a further improvement of the present invention, the cam assembly includes a first position and a second position in the vertical direction, the height of the first position being higher than that of the second position. When the cam assembly is in the first position, the stop rib contacts the cam lug, and the pusher separates from the stop block. When the cam assembly is in the second position, the pusher contacts the stop block, and the stop rib separates from the cam lug.

[0019] As a further improvement of the present invention, when the cam assembly is in the first position, the plane where the highest point of the cam lug is located is higher than the plane where the lowest point of the stop rib is located, the cam lug abuts against the stop rib, and there is a distance between the pusher and the stop block; when the cam assembly descends from the first position to the second position, the pusher moves closer to the stop block and abuts against the stop block, while the cam lug moves downward, and the plane where the highest point of the cam lug is located gradually becomes lower than the plane where the lowest point of the stop rib is located, so that the cam lug disengages from the stop rib, and the pusher drives the cam assembly to rotate circumferentially in the horizontal direction.

[0020] As a further improvement of the present invention, the driving device includes a motor, which is connected to the output shaft for transmission. The motor drives the output shaft to rotate in a first direction or in a second direction opposite to the first direction.

[0021] As a further improvement of the present invention, the cam assembly includes a front end and a rear end with a height difference, and the height of the rear end is greater than the height of the front end. When the cam assembly is lifted, the motor drives the output shaft to rotate in the second direction until the pusher disengages from the straight section of the rear end. At this time, the motor stops rotating, and the cam assembly is lifted under the force of the elastic component.

[0022] As a further improvement of the present invention, the cam assembly includes a cam plate, which is fixedly connected to the cam assembly by screws to seal the cam assembly.

[0023] Another object of the present invention is to provide a cleaning device having the above-described mop lifting structure.

[0024] To achieve the above objectives, the present invention provides a cleaning device, comprising:

[0025] Mop unit;

[0026] The aforementioned mop lifting structure is connected to the mop unit and drives the mop unit to rise, fall, or rotate circumferentially in the horizontal direction.

[0027] The beneficial effects of this invention are as follows: Compared with the prior art, the mop lifting structure of this invention assembles the output shaft and the cam, and uses the pusher on the output shaft to drive the cam assembly to rotate, thereby realizing the lifting and lowering movement of the cam assembly in the vertical direction, which in turn drives the mop unit to lift and lower. This structure is simple in design, easy to manufacture and assemble, and has high transmission efficiency. In addition, the elastic component is built into the cam assembly, which strengthens the protection of the parts, reduces the failure rate, effectively extends the service life of the cleaning equipment, and improves the user experience. Attached Figure Description

[0028] Figure 1 This is a front view of a preferred embodiment of the mop lifting structure of the present invention.

[0029] Figure 2 yes Figure 1 A cross-sectional view of the middle mop lifting structure in the lowered state.

[0030] Figure 3 yes Figure 1 A cross-sectional view of the lifting structure of the central mop in the raised state.

[0031] Figure 4 yes Figure 1 The exploded view in the image.

[0032] Figure 5 yes Figure 1 A three-dimensional structural diagram of the cam assembly.

[0033] Figure 6 yes Figure 1 A cross-sectional view of the cam assembly.

[0034] Figure 7 yes Figure 1 3D structural diagram of the middle gearbox assembly. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0036] It should be noted that, in order to avoid obscuring the present invention with unnecessary details, only the structures and / or processing steps closely related to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0037] Additionally, it should be noted that the terms “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0038] Please see Figures 1-7 As shown, a mop lifting structure 100 provided by the present invention can be applied to cleaning equipment to realize the lifting and lowering of the mop unit 3 on the cleaning equipment.

[0039] The mop lifting structure 100 of the present invention includes:

[0040] The drive device 1 includes an output shaft 12 and a pusher 15 fixedly connected to the output shaft 12;

[0041] The transmission device 2, which is connected to the drive device 1, includes a cam assembly 21, on which a cam profile 211 with a height difference is provided;

[0042] The end of the pusher 15 away from the drive device 1 abuts against the cam profile 211. The output shaft 12 drives the pusher 15 to rotate circumferentially, and through the pusher 15 drives the cam assembly 21 to rotate and drive the cam assembly 21 to move in the vertical direction and / or circumferentially in the horizontal direction.

[0043] The mop lifting structure 100, when the cam assembly 21 descends, drives the pusher 15 to rotate in the first direction via the output shaft 12. The pusher 15 moves from the lowest point to the highest point along the cam profile 211. During this process, the cam assembly 21 moves vertically from top to bottom, driving the mop unit 3 to descend. When the cam assembly 21 rises, the pusher 15 rotates with the output shaft 12 in the second direction. The pusher 15 moves from the highest point to the lowest point along the cam profile 211. The cam assembly 21 moves vertically from bottom to top, driving the mop unit 3 to rise. The overall structure is simple, practical, easy to assemble, and not easily damaged.

[0044] The cam assembly 21 includes a first position and a second position in the vertical direction, and the height of the first position is higher than the height of the second position. When the height of the cam assembly 21 is greater than the height of the first position, the pusher 15 drives the cam assembly 21 to rotate circumferentially in the horizontal direction, while the cam assembly 21 descends in the vertical direction. When the height of the cam assembly 21 is at the first position, the cam assembly 21 engages with the drive device 1 and stops rotating circumferentially. When the height of the cam assembly 21 is between the first and second positions, the pusher 15 rotates circumferentially and drives the cam assembly 21 to descend in the vertical direction. When the cam assembly 21 is at the second position, the cam assembly 21 stops descending and is driven by the pusher 15 to rotate circumferentially in the horizontal direction.

[0045] The transmission device also includes an elastic component 22, which is disposed within the cam assembly 21. When the cam assembly 21 descends, it compresses the elastic component 22; when the cam assembly 21 rises, the elastic component 22 applies an upward force to it. During cam assembly 21 descent, the pusher 15 applies a downward force to the cam assembly 21, while simultaneously compressing the elastic component 22. When it is necessary to raise the cam assembly 21, no additional power is required; the elastic component 22 can apply an upward force to the cam assembly 21, causing it to rise.

[0046] In some embodiments, the cam assembly 21 includes an inner cam shaft 215 and a cam housing 216, with a gap between the inner cam shaft 215 and the cam housing 216, and the inner cam shaft 215 and the cam housing 216 are fixedly connected by a connecting portion 217.

[0047] The inner cam shaft 215 has a cam through hole 214. One end of the output shaft 12 passes through the cam through hole 214 and is assembled with the cam assembly 21. The inner cam shaft 215 has a snap-fit ​​part 219 inside, and the elastic component 22 is at least partially connected to the snap-fit ​​part 219. In order to facilitate the assembly of the output shaft 12 and the cam assembly 21, the cam assembly 21 has a cam through hole 214. The output shaft 12 can be quickly assembled with the cam assembly 21 by simply passing the output shaft 12 through the cam through hole 214. At the same time, the elastic component 22 is snapped into the snap-fit ​​part 219 to prevent displacement when compressed or rebounding.

[0048] The elastic component 22 includes an elastic element 221 and a fastener 222. The fastener 222 is located at the bottom of the output shaft 12 and is housed within the cam assembly 21, configured to assemble with the output shaft 12. A locking portion 219 is located at the top of the cam assembly 21. One end of the elastic element 221 abuts against the locking portion 219, and the other end abuts against the fastener 222. When the cam assembly 21 moves downward, the top of the cam assembly 21 compresses the elastic element 221 downward. By using the locking portion 219, the elastic element 221 is completely embedded within the cam assembly 21. Compared to placing the elastic element 221 outside the cam assembly 21, this design allows the mop lifting structure 100 to occupy less space, resulting in a more compact structure. Furthermore, the elastic element 221, being embedded within the cam assembly 21, receives better protection, preventing corrosion and extending its service life.

[0049] In some embodiments, the elastic element 221 is a compression spring; in other embodiments, the elastic element 221 may also be other elastic parts, and the present invention does not impose any restrictions on this.

[0050] A pusher 15 is mounted on the output shaft 12. The pusher 15 includes a push rod handle 152 and a push rod ring 151. The push rod handle 152 is located on both sides of the push rod ring 151, and the push rod ring 151 is sleeved on the output shaft 12. After the pusher 15 is assembled with the output shaft 12, it rotates in unison with the output shaft 12 during operation. The function of the pusher 15 is that when the output shaft 12 rotates, the push rod handle 152 moves from the lowest point to the highest point along the cam profile 211, pushing the cam assembly 21 to move downward in the vertical direction during this process.

[0051] The cam profile 211 includes a beginning end and a end end, with a height difference between the beginning end and the end end. The cam profile 211 is a continuous arc line. Alternatively, the cam profile includes a straight section 210 and an arc section. There are at least two straight sections 210, which are respectively provided at the beginning end and the end end. The arc line is provided between the straight sections 210. The straight sections 210 are at the same height in the vertical direction and their projection in the horizontal direction is arc-shaped.

[0052] The height of the tail end is greater than the height of the head end. A stop block 218 is provided on the tail end. The stop block 218 is set on the movement path of the pusher 15 and is configured to limit the pusher 15. When the push rod handle 152 in the pusher 15 moves along the cam profile 211 to the tail end of the cam profile 211, the push rod handle 152 abuts against the stop block 218. The stop block 218 drives the cam assembly 21 to rotate, thereby driving the mop unit 3 to rotate and clean the floor.

[0053] Two cam profiles 211 are symmetrically arranged around the outside of the cam assembly 21 and abut against two push rod handles 152 respectively. When the pusher 15 rotates with the output shaft 12 in the first direction, the push rod handle 152 moves from the beginning (the lowest point of the cam profile) to the end (the highest point of the cam profile) of the cam profile 211. During this process, the cam assembly 21 moves vertically from top to bottom, from the highest point to the lowest point, driving the mop unit 3 to descend. When the pusher 15 rotates in the opposite direction with the output shaft 12, the push rod handle 152 moves from the end to the beginning of the cam profile 211. During this process, the elastic component 22 pushes the cam assembly 21 vertically from bottom to top, from the lowest point to the highest point, driving the mop unit 3 to complete the lifting.

[0054] In some embodiments, the gearbox assembly 16 includes a first housing 161, an output shaft 12 mounted within the first housing 161, and the first housing 161 sleeved on the outside of the cam assembly 21. The inner wall of the first housing 161 has a vertically extending baffle 162, and the outer side of the cam assembly 21 has a vertically extending cam lug 212 located outside the stop block 218 and configured to be movably connected to the drive device 1. When the pusher 15 is not in contact with the stop block 218, the highest point of the cam lug 212 is higher than the lowest point of the baffle 162. During the rotation of the output shaft 12, the pusher handle 152 drives the cam lug 212 to contact the baffle 162.

[0055] The cam assembly 21 includes a first position and a second position in the vertical direction. The height of the first position is higher than that of the second position. When the cam assembly 21 is in the first position, the stop rib 162 contacts the cam ear 212, and the pusher 15 separates from the stop block 218. When the cam assembly 21 is in the second position, the pusher 15 contacts the stop block 218, and the stop rib 162 separates from the cam ear 212.

[0056] When the cam assembly 21 is in the first position, the plane where the highest point of the cam ear 212 is located is higher than the plane where the lowest point of the stop rib 162 is located, and the cam ear 212 abuts against the stop rib 162, while there is a distance between the pusher 15 and the stop block 218. When the cam assembly 21 descends from the first position to the second position, the pusher 15 moves closer to the stop block 218 and abuts against the stop block 218, while the cam ear 212 moves downward, and the plane where the highest point of the cam ear 212 is located gradually becomes lower than the plane where the lowest point of the stop rib 162 is located, so that the cam ear 212 disengages from the stop rib 162, and the pusher 15 drives the cam assembly 21 to rotate circumferentially in the horizontal direction. At this time, the mop unit 3 is in contact with the ground, and the direction of the friction force generated by the ground on the mop unit 3 is opposite to the direction of rotation of the motor 11.

[0057] The drive device 1 includes a motor 11, which is connected to the output shaft 12. The motor 11 drives the output shaft 12 to rotate in a first direction or in a second direction opposite to the first direction.

[0058] In some embodiments, the cam assembly 21 includes a head end and a tail end with a height difference, and the height of the tail end is greater than the height of the head end. When the cam assembly 21 is lifted, the motor 11 drives the output shaft 12 to rotate in a second direction until the pusher 15 disengages from the straight section of the tail end. At this point, the motor 11 stops rotating, and the cam assembly 21 is lifted under the force of the elastic component 22. With this configuration, the motor 11 only needs to rotate for a short time when the cam assembly 21 is lifted, which helps to save energy. In other embodiments, the motor 11 can also be configured to rotate continuously when the cam assembly 21 is lifted, and the present invention does not impose any restrictions on this.

[0059] The gearbox assembly 16 includes a second housing 163 and a gear set 164. The motor 11 is mounted in the second housing 163, and the gear set 164 is located between the first housing 161 and the second housing 163. The gear set 164 meshes with both the motor 11 and the output shaft 12. When the motor 11 rotates, it drives the gear set 164 to rotate, which in turn drives the output shaft 12 to rotate. This layout is more compact and offers higher transmission efficiency. Specifically, the gear set 164 can be a single gear or multiple gears. By adjusting the gear set 164, different speed reduction ratios can be achieved. For example, when a faster lifting or lowering speed of the mop unit 3 is required, a lower ratio (e.g., 5 to 10 times) can be adjusted to ensure the movement speed of the mop unit 3. When higher positional accuracy of the lifting or lowering of the mop unit 3 is required, a higher ratio (e.g., 20 to 30 times) can be adjusted to ensure precise control of the rotation angle of the output shaft 12.

[0060] When the mop unit 3 needs to be lowered, the motor 11 rotates in the first direction, driving the output shaft 12 to rotate. The push rod handle 152 follows the output shaft 12 and rotates. The push rod handle 152 abuts against the cam profile 211, which will first drive the cam assembly 21 to run at the highest position for a period of time. When the cam ear 212 abuts against the stop rib 162, the cam assembly 21 stops rotating due to the obstruction of the stop rib 162. The push rod handle 152 continues to rotate under the drive of the output shaft 12 and runs along the cam profile 211, running from the lowest point of the cam profile 211 to the highest point. During the operation, the push rod handle 152 applies a downward force to the cam assembly 21, pushing the cam assembly 21 from the highest point to the lowest point, while compressing the elastic element 221 to complete the descent of the cam assembly 21.

[0061] When the mop unit 3 is lifted, the motor 11 drives the gearbox assembly 16 to rotate in the opposite direction. The cam ear 212 contacts the baffle 162, and the push rod handle 152 moves from the highest point of the cam profile 211 to the lowest point of the cam profile 211. During this process, the compressed elastic element 221 rebounds and applies an upward force to the cam assembly 21, thus completing the lifting of the cam assembly 21.

[0062] In some embodiments, motor 11 can be a stepper motor. A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular or linear displacements. For each input pulse signal, the rotor rotates by an angle or moves forward one step. The output angular or linear displacement is proportional to the number of input pulses, and the rotational speed is proportional to the pulse frequency. When there is no rotation signal input to the stepper motor, the rotor cannot continue to rotate. Therefore, the stepper motor can be used to control the rotational speed of the cam assembly 21. When the cam assembly 21 is running vertically, it is controlled to rotate at a slower speed. When the cam assembly 21 is at its lowest position, it is controlled to rotate at a higher speed, driving the mop unit 3 to clean the floor.

[0063] The cam assembly 21 includes a cam plate 213, which is fixedly connected to the cam assembly 21 and seals the cam assembly 21. During the cleaning process of the mop unit 3, water droplets and debris can easily seep into the cam assembly 21, causing damage. By sealing the cam assembly 21 with the cam plate 213, water droplets and debris can be effectively prevented from entering the cam assembly 21, protecting the internal structure of the cam assembly 21 and effectively extending its service life.

[0064] In some embodiments, the mop lifting structure 100 further includes a position detection device (not shown) for controlling the lifting position of the mop unit 3. The position detection device can better control the position of the mop unit 3, making the lifting process more controllable and improving the user experience.

[0065] This invention also provides a cleaning device comprising the aforementioned mop lifting structure 100 and a mop unit 3. The mop lifting structure 100 is connected to the mop unit 3, driving the mop unit 3 to rise, fall, or rotate circumferentially in the horizontal direction for cleaning the floor. An elastic connector 311 is provided between the mop unit 3 and the cam assembly 21, allowing the mop unit 3 to move vertically within a certain range relative to the cam assembly 21 when encountering uneven surfaces. This improves the cleaning device's passability and adaptability during the cleaning process, while ensuring close contact between the cleaning device and the floor for better cleaning results. This cleaning device can control the lifting and lowering of the mop unit 3 according to different scenarios, providing a good user experience.

[0066] The mop unit 3 includes a mop (not shown), a turntable 32 and a rotating shaft 31. The mop is attached to the bottom of the turntable 32. The turntable 32 is connected to the rotating shaft 31. The cam assembly 21 is engaged with the rotating shaft 31 and sleeved on the outside of the rotating shaft 31. The rotation of the cam assembly 21 drives the rotating shaft 31 and the turntable 32 of the mop unit 3 to rotate, thereby achieving rotational cleaning of the floor.

[0067] In some embodiments, the top of the rotating shaft 31 is magnetic and can be directly attracted to the cam iron plate 213. When assembling the mop unit 3 with the cam assembly 21, the assembly process can be completed quickly by the magnetic attraction between the cam iron plate 213 and the rotating shaft 31.

[0068] In summary, when the cam assembly 21 needs to be lowered, the motor 11 drives the output shaft 12 to rotate in the first direction. The pusher 15, which is fixedly connected to the output shaft 12, runs along the cam profile 211, driving the cam assembly 21 to rotate. When the cam ear 212 of the cam assembly 21 abuts against the stop rib 162, the cam assembly 21 stops rotating. The pusher 15 continues to run along the cam profile 211, pushing the cam assembly 21 to descend in the vertical direction. When the cam assembly 21 descends, it compresses the elastic component 22. When the pusher 15 abuts against the stop block 218, the cam ear 212 disengages from the stop rib 162, the cam assembly 21 descends, and the mop unit 3 connected to the cam assembly 21 contacts the ground. The pusher 15 drives the cam assembly 21 to continue rotating to clean the ground. After cleaning is completed, when it is necessary to lift the cam assembly 21, the motor 11 starts rotating in the second direction and immediately stops rotating. At this time, the compressed elastic component 22 rebounds, applying an upward force to the cam assembly 21, thus lifting the cam assembly 21. This mop lifting structure 100 has a simple structure, is easy and quick to assemble, and its components are durable and have high transmission efficiency, making it highly practical and economical.

[0069] The above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. A mop lifting structure, applied in cleaning equipment, characterized in that, include: The drive device includes an output shaft and a pusher fixedly connected to the output shaft; A transmission device, connected to the drive device, includes a cam assembly, wherein the cam assembly is provided with a cam profile having a height difference; The end of the pusher away from the drive device abuts against the cam profile. The output shaft drives the pusher to rotate circumferentially, and through the pusher, drives the cam assembly to move in the vertical direction and / or circumferentially in the horizontal direction. The transmission device includes a first position and a second position in the vertical direction. According to the relative positional relationship between the transmission device and the first and second positions, the pushing member drives the transmission device to move in the vertical direction and / or move circumferentially in the horizontal direction; the height of the first position is higher than the height of the second position. When the height of the transmission device is greater than the height of the first position, the pusher drives the transmission device to rotate circumferentially in the horizontal direction, while the transmission device moves in the vertical direction. When the height of the transmission device is at the first position, the transmission device stops rotating circumferentially; When the height of the transmission device is between the first position and the second position, the pusher rotates circumferentially and pushes the transmission device to move in the vertical direction; When the transmission device is in the second position, the pushing member drives the transmission device to rotate circumferentially in the horizontal direction; The mop lifting structure and the mop unit of the cleaning equipment are detachably connected.

2. The mop lifting structure according to claim 1, characterized in that: When the height of the cam assembly is greater than the height of the first position, the pusher drives the cam assembly to rotate circumferentially in the horizontal direction, while the cam assembly descends vertically; when the height of the cam assembly is at the first position, the cam assembly engages with the drive device and stops rotating circumferentially; when the height of the cam assembly is between the first position and the second position, the pusher rotates circumferentially and pushes the cam assembly to descend vertically; when the cam assembly is at the second position, the cam assembly stops descending and is driven by the pusher to rotate circumferentially in the horizontal direction.

3. The mop lifting structure according to claim 1, characterized in that: The transmission device further includes an elastic component disposed within the cam assembly. When the cam assembly descends, it compresses the elastic component. When the cam assembly rises, the elastic component applies an upward force to the cam assembly.

4. The mop lifting structure according to claim 3, characterized in that: The cam assembly includes an inner cam shaft, and the inner cam shaft has a snap-fit ​​portion inside, with the elastic component at least partially connected to the snap-fit ​​portion.

5. The mop lifting structure according to claim 4, characterized in that: The elastic component includes an elastic element and a fastener. The fastener is disposed at the bottom of the output shaft and configured to be assembled with the output shaft. The snap-fit ​​portion is disposed at the top of the cam assembly. One end of the elastic element is connected to the snap-fit ​​portion, and the other end abuts against the fastener. When the cam assembly moves downward, the top of the cam assembly compresses the elastic element downward.

6. The mop lifting structure according to claim 1, characterized in that: The cam profile includes a head end and a tail end, with a height difference between the head end and the tail end. The cam profile is a continuous arc line. Alternatively, the cam profile includes a straight section and an arc section, with at least two straight sections respectively disposed at the head end and the tail end, and the arc section disposed between the straight sections.

7. The mop lifting structure according to claim 6, characterized in that: The height of the tail end is greater than the height of the head end, and a stop block is provided on the tail end. The stop block is located on the movement path of the pusher and is configured to limit the pusher.

8. The mop lifting structure according to claim 7, characterized in that: The outer side of the cam assembly is provided with a cam lug extending in a vertical direction. The cam lug is located outside the stop block and is configured to be movably connected to the drive device.

9. The mop lifting structure according to claim 8, characterized in that: The drive device includes a gearbox assembly, which includes a first housing. The output shaft is installed inside the first housing, and the inner wall of the first housing is provided with baffles extending in a vertical direction.

10. The mop lifting structure according to claim 9, characterized in that: The cam assembly includes a first position and a second position in the vertical direction. The height of the first position is higher than that of the second position. When the cam assembly is in the first position, the stop rib contacts the cam lug, and the pusher separates from the stop block. When the cam assembly is in the second position, the pusher contacts the stop block, and the stop rib separates from the cam lug.

11. The mop lifting structure according to claim 10, characterized in that: When the cam assembly is in the first position, the plane where the highest point of the cam lug is located is higher than the plane where the lowest point of the stop rib is located, the cam lug abuts against the stop rib, and there is a distance between the pusher and the stop block; when the cam assembly descends from the first position to the second position, the pusher moves closer to the stop block and abuts against the stop block, while the cam lug moves downward, and the plane where the highest point of the cam lug is located gradually becomes lower than the plane where the lowest point of the stop rib is located, so that the cam lug disengages from the stop rib, and the pusher drives the cam assembly to rotate circumferentially in the horizontal direction.

12. The mop lifting structure according to claim 3, characterized in that: The driving device includes a motor, which is connected to the output shaft for transmission. The motor drives the output shaft to rotate in a first direction or in a second direction opposite to the first direction.

13. The mop lifting structure according to claim 12, characterized in that: The cam assembly includes a head end and a tail end with a height difference, and the height of the tail end is greater than the height of the head end. When the cam assembly is lifted, the motor drives the output shaft to rotate in the second direction until the pusher disengages from the straight section of the tail end. At this time, the motor stops rotating, and the cam assembly is lifted under the force of the elastic component.

14. The mop lifting structure according to claim 1, characterized in that: The cam assembly includes a cam plate, which is fixedly connected to the cam assembly by screws to seal the cam assembly.

15. A cleaning device, characterized in that, include: Mop unit; The mop lifting structure according to any one of claims 1 to 14, wherein the mop lifting structure is connected to the mop unit and drives the mop unit to lift or lower or rotate circumferentially in the horizontal direction.

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