Transmission device and cleaning apparatus

Abstract

The present disclosure relates to a transmission device and a cleaning apparatus. The transmission device comprises: a main gear box, a first reduction assembly and a swing module; the first reduction assembly comprises a plurality of first transmission gears, the plurality of first transmission gears being arranged in the main gear box in a preset direction and sequentially engaged for transmission; the plurality of first transmission gears are provided with a first input end and a first output end, the first input end being used for being in transmission connection with an output shaft of a first motor; the swing module is used for being connected to a cleaning member, and the first output end is in transmission connection with the swing module so as to drive the swing module to rotate.

Description

Transmission and cleaning device

[0001] Cross-reference to related applications

[0002] The present application is based on the Chinese patent application No. 202421523372.8, filed on June 28, 2024, and claims priority to the Chinese patent application No. 202421523372.8, filed on June 28, 2024, the entire contents of which are incorporated herein by reference. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of cleaning devices, in particular, to a transmission and a cleaning device. BACKGROUND

[0004] With the continuous popularity of intelligent cleaning devices, especially the gradual development of cleaning robot technology, it provides a lot of help for household cleaning work. Cleaning robots include sweeping robots, mopping robots, and sweeping and mopping integrated robots, etc. In the cleaning robot, a power mechanism is usually provided, the power mechanism is in transmission connection with a mop, and the power mechanism can drive the mop to rotate to clean the ground.

[0005] In the related art, the structure design of the transmission of the power mechanism is unreasonable, the transmission efficiency is low, which leads to high energy consumption of the cleaning device, and the noise generated by the cleaning device in the related art when working is large, which reduces the user's experience.

[0006] SUMMARY

[0007] The present disclosure aims to at least solve one of the technical problems in the related art to some extent.

[0008] To this end, an embodiment of the present disclosure provides a transmission, which has high transmission efficiency, and is beneficial to reduce the energy consumption and noise when the transmission works.

[0009] An embodiment of the present disclosure further provides a cleaning device.

[0010] An embodiment of the first aspect of the present disclosure provides a transmission, comprising: a main gear box; a first reduction assembly, the first reduction assembly comprising a plurality of first transmission gears, the plurality of first transmission gears being arranged in the main gear box along a preset direction and being in transmission engagement in sequence, the plurality of first transmission gears having a first input end and a first output end, the first input end being configured to be in transmission connection with an output shaft of a first motor; and a swing module, the swing module being configured to connect a cleaning member, the first output end being in transmission connection with the swing module to drive the swing module to rotate.

[0011] The transmission device according to the embodiments of the present disclosure, the first reduction assembly is driven by a plurality of sets of first transmission gears, a first input end of the plurality of sets of first transmission gears is in driving connection with an output shaft of the first motor, and a first output end of the plurality of sets of first transmission gears is in driving connection with the swing module to drive the swing module to rotate. Compared with the transmission mode of a worm gear, the transmission device according to the embodiments of the present disclosure can significantly improve the transmission efficiency of the first reduction assembly, reduce the friction loss during the transmission of the first reduction assembly, and improve the coincidence degree during the transmission of the first reduction assembly, thereby effectively reducing the noise generated during the operation of the transmission device.

[0012] In some embodiments, the plurality of sets of first transmission gears are all helical gears, and / or the plurality of sets of first transmission gears include a first gear, a second gear, a third gear, and a fourth gear, the first gear, the second gear, the third gear, and the fourth gear are sequentially engaged, the first input end is arranged on the first gear, the first output end is arranged on the fourth gear, the first gear is a metal gear, and the second gear, the third gear, and the fourth gear are plastic gears.

[0013] In some embodiments, the swing module includes a swing gear box, a second reduction assembly, and a rotating sleeve, the second reduction assembly includes an intermediate shaft and a plurality of sets of second transmission gears, the intermediate shaft is arranged in the swing gear box and the main gear box, the plurality of sets of second transmission gears are arranged in the swing gear box in a preset direction and are sequentially engaged, the plurality of sets of second transmission gears have a second input end and a second output end, the first output end and the second input end are both in driving connection with the intermediate shaft, the second output end is in driving connection with the rotating sleeve, and an angle of the swing gear box around the circumference of the intermediate shaft is adjustable.

[0014] In some embodiments, the main gear box is provided with a first oil retaining ring, and at least part of the first transmission gears are arranged in the first oil retaining ring, the swing gear box is provided with a second oil retaining ring, and at least part of the second transmission gears are arranged in the second oil retaining ring.

[0015] In some embodiments, a wall surface of the main gear box is provided with a first reinforcing rib, and at least part of the first reinforcing rib is connected with the first oil retaining ring, and / or a wall surface of the swing gear box is provided with a second reinforcing rib, and at least part of the second reinforcing rib is connected with the second oil retaining ring.

[0016] In some embodiments, the swing angle of the swing gear box around the circumference of the intermediate shaft ranges from 75° to 85°.

[0017] In some embodiments, the main gearbox comprises a bottom shell, a main shell, a main cover and an upper top cover, the bottom shell is arranged at a lower end of the main shell and defines a first gear cavity, the main cover is arranged at an upper end of the main shell and defines a swing cavity, the upper top cover is arranged at an upper end of the main cover and defines a swing control cavity, the first reduction assembly is arranged in the main gearbox, the swing gearbox is arranged in the swing cavity, the transmission device further comprises a swing control assembly, the swing control assembly is arranged in the swing control cavity, the swing control assembly has a third input end and a third output end, the third input end is used for being connected with the second motor, and the third output end is in transmission connection with the swing gearbox to drive the swing gearbox to rotate around the circumference of the intermediate shaft.

[0018] In some embodiments, the swing gearbox comprises a swing shell, a swing top cover and a retainer, the swing top cover is arranged at an upper end of the swing shell and defines a second gear cavity together with the swing shell, the second reduction assembly is arranged in the second gear cavity, the third output end is in transmission connection with the swing top cover, the retainer is arranged at a lower end of the swing shell, and the rotating sleeve is rotatably installed in the retainer, the transmission device further comprises a plurality of rollers, part of the rollers are rotatably installed between the swing top cover and the main cover, and the other part of the rollers are rotatably installed between the rotating sleeve and the swing shell.

[0019] In some embodiments, one of a peripheral edge of the main shell and an outer edge of the main cover is provided with a first convex stop, and the other is provided with a first concave stop, the first convex stop is in position matching with the first concave stop, one of a peripheral edge of the swing shell and an outer edge of the swing top cover is provided with a second convex stop, and the other is provided with a second concave stop, the second convex stop is in position matching with the second concave stop, and / or at least one of a bottom surface of the bottom shell and an upper end surface of the main cover is provided with a wire slot.

[0020] Embodiments of the second aspect of the present disclosure provide a cleaning device comprising the transmission device of any one of the embodiments of the first aspect of the present disclosure.

[0021] The cleaning device according to the embodiments of the present disclosure, the first reduction assembly is driven through a plurality of groups of first transmission gears, the first input end of the plurality of groups of first transmission gears is in transmission connection with the output shaft of the first motor, and the first output end of the plurality of groups of first transmission gears is in transmission connection with the swing module to drive the swing module to rotate. Compared with the transmission mode of the worm gear, the transmission device of the cleaning device of the embodiments of the present disclosure can significantly improve the transmission efficiency of the first reduction assembly, reduce the friction loss when the first reduction assembly is driven, and improve the coincidence degree when the first reduction assembly is driven, thereby effectively reducing the noise generated when the transmission device works. BRIEF DESCRIPTION OF DRAWINGS

[0022] Fig. 1 is a schematic diagram of a transmission device according to an embodiment of the present disclosure.

[0023] Fig. 2 is a schematic diagram of another perspective view of the transmission device according to an embodiment of the present disclosure.

[0024] Fig. 3 is a schematic diagram of the installation of a bottom shell, a first reduction assembly and a swing module of the transmission device according to an embodiment of the present disclosure.

[0025] Fig. 4 is a schematic diagram of the installation of a first reduction assembly, a second reduction assembly and a rotating sleeve of the transmission device according to an embodiment of the present disclosure.

[0026] Fig. 5 is a schematic diagram of the swing module of the transmission device according to an embodiment of the present disclosure.

[0027] Fig. 6 is a schematic diagram of the swing module (with the swing top cover removed) of the transmission device according to an embodiment of the present disclosure.

[0028] Fig. 7 is a schematic diagram of a half-section view of the swing module of the transmission device according to an embodiment of the present disclosure.

[0029] Fig. 8 is a schematic diagram of a main shell of the transmission device according to an embodiment of the present disclosure.

[0030] Fig. 9 is a schematic diagram of the installation of a main cover and a swing control assembly of the transmission device according to an embodiment of the present disclosure.

[0031] Reference signs:

[0032] 1, main gear box; 11, main shell; 12, main cover; 13, upper top cover; 14, bottom shell; 151, first gear cavity; 152, swing cavity; 153, swing control cavity; 16, first oil baffle; 17, first reinforcing rib; 18, wiring groove;

[0033] 2, first reduction assembly; 21, first transmission gear; 211, No. 1 gear; 212, No. 2 gear; 213, No. 3 gear; 214, No. 4 gear; 215, optical axis;

[0034] 3, swing module; 31, swing gear box; 311, swing shell; 312, swing top cover; 3121, connecting part; 313, retainer; 314, second oil baffle; 315, second reinforcing rib; 316, second gear cavity; 32, second reduction assembly; 321, second transmission gear; 322, intermediate shaft; 33, rotating sleeve; 34, roller;

[0035] 4, swing control assembly; 41, third transmission gear; 42, fourth transmission gear; 421, lever; 43, swing cam; 44, elastic member; 45, limit switch. DETAILED DESCRIPTION

[0036] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0037] A transmission device and a cleaning device according to embodiments of the present disclosure are described below with reference to Figs. 1-9.

[0038] As shown in Figs. 1-4, the transmission device of the embodiments of the present disclosure comprises a main gear box 1, a first reduction assembly 2 and a swing module 3. The first reduction assembly 2 comprises a plurality of sets of first transmission gears 21 arranged in a preset direction within the main gear box 1 and in turn meshing transmission, the plurality of sets of first transmission gears 21 having a first input end and a first output end, the first input end being used for transmission connection with an output shaft of a first motor, and the swing module 3 being used for connecting a cleaning piece, the first output end being in transmission connection with the swing module 3 to drive the swing module 3 to rotate.

[0039] It should be noted that the plurality of sets of first transmission gears 21 are in turn meshing transmission to reduce the rotating speed of the first motor, thereby increasing the torque output by the first motor. The extension path of the preset direction can be a straight line or a curve. The plurality of sets of first transmission gears 21 of the embodiments of the present disclosure can be designed according to the specific structure of the cleaning device, which is not limited in the present application.

[0040] According to the transmission device of the embodiments of the present disclosure, the first reduction assembly 2 is in meshing transmission through the plurality of sets of first transmission gears 21, the first input end of the plurality of sets of first transmission gears 21 is in transmission connection with the output shaft of the first motor, and the first output end of the plurality of sets of first transmission gears 21 is in transmission connection with the swing module 3 to drive the swing module 3 to rotate. Compared with the transmission mode of the worm and the gear, the transmission device of the embodiments of the present disclosure can significantly improve the transmission efficiency of the first reduction assembly 2, reduce the friction loss during transmission of the first reduction assembly 2, and improve the coincidence degree during transmission of the first reduction assembly 2, thereby effectively reducing the noise generated during operation of the transmission device.

[0041] Optionally, the plurality of sets of first transmission gears 21 are all helical gears. It can be understood that the adjacent two first transmission gears 21 are combined by using helical teeth. When the plurality of sets of first transmission gears 21 are all helical gears, the transmission coincidence degree of the first reduction assembly 2 can be significantly improved, and the load of each pair of helical gears is reduced, thereby improving the carrying capacity of the first transmission gears 21, prolonging the service life of the first transmission gears 21, and making the transmission of the first transmission gears 21 stable, effectively reducing the noise decibel value of the first reduction assembly 2, and being beneficial to improving the user experience.

[0042] In an example, as shown in FIGS. 2 and 3, the multiple sets of first transmission gears 21 include a first gear 211, a second gear 212, a third gear 213, and a fourth gear 214, the first gear 211, the second gear 212, the third gear 213, and the fourth gear 214 are sequentially engaged, the first input end is arranged at the first gear 211, the first output end is arranged at the fourth gear 214, the first gear 211 is a metal gear, and the second gear 212, the third gear 213, and the fourth gear 214 are plastic gears.

[0043] It can be understood that the output shaft of the first motor is coaxially connected with the first gear 211 to drive the first gear 211 to rotate, since the first gear 211 is a metal gear and the second gear 212 is a plastic gear, the noise generated when the metal gears are engaged can be reduced, and the reliability of the power output of the first gear 211 can be ensured. In addition, since the third gear 213 and the fourth gear 214 are also plastic gears, the noise generated when the first speed reduction assembly 2 is driven can be further reduced.

[0044] As shown in FIG. 4, the second gear 212 and the third gear 213 are double helical gears, and the fourth gear 214 is a single helical gear. The second gear 212 and the third gear 213 are rotationally fixed in the main gear box 1 through the optical axis 215. For example, the first motor can be a brushless motor to prolong the service life of the first motor.

[0045] Alternatively, as shown in FIGS. 3 to 6, the swing module 3 includes a swing gear box 31, a second speed reduction assembly 32, and a rotating sleeve 33. The second speed reduction assembly 32 includes an intermediate shaft 322 and multiple sets of second transmission gears 321. The intermediate shaft 322 is arranged through the swing gear box 31 and the main gear box 1. The multiple sets of second transmission gears 321 are arranged in the swing gear box 31 in a predetermined direction and are sequentially engaged for transmission. The multiple sets of second transmission gears 321 have a second input end and a second output end. The first output end and the second input end are both in transmission connection with the intermediate shaft 322. The second output end is in transmission connection with the rotating sleeve 33. The rotating sleeve 33 is used for connecting a cleaning piece.

[0046] It can be understood that, as shown in FIGS. 4 and 5, the upper end of the intermediate shaft 322 is arranged through the swing gear box 31 and is connected with the second input end. The lower end of the intermediate shaft 322 is arranged through the main gear box 1 and is connected with the second output end. The multiple sets of first transmission gears 21 and the multiple sets of second transmission gears 321 can be arranged in the up-down direction, thereby avoiding the problem of large horizontal space occupation caused by the direct engagement of the first transmission gears 21 and the second transmission gears 321.

[0047] As shown in FIG. 3, the swing gear box 31 is adjustable around the circumference of the intermediate shaft 322. It can be understood that the swing gear box 31 is swingable between the extended position and the retracted position, so as to adjust the angle of the swing gear box 31 around the circumference of the intermediate shaft 322, and thus the cleaning range of the cleaning element on the rotating sleeve 33 can be increased, so that the cleaning device can clean the dead angle position in the room.

[0048] Optionally, the swing angle of the swing gear box 31 around the circumference of the intermediate shaft 322 ranges from A, wherein 75°≤A≤85°. For example, the swing angle of the swing gear box 31 around the circumference of the intermediate shaft 322 ranges from A, which can be 75°, 78°, 80°, 81°, 83° and 85°. When the swing angle of the swing gear box 31 around the circumference of the intermediate shaft 322 adopts the above parameter range, the cleaning work of the cleaning device on the dead angle position can be met, and the problem of interference between the swing gear box 31 and the main gear box 1 when the swing module 3 swings can be avoided, which is beneficial to miniaturization and compact design of the transmission device.

[0049] In some embodiments, as shown in FIGS. 3 and 8, the main gear box 1 is provided with a first oil retaining ring 16, and at least part of the first transmission gear 21 is installed in the first oil retaining ring 16. For example, the first oil retaining ring 16 is formed on the bottom wall and / or the top wall in the main gear box 1. The first oil retaining ring 16 is arranged around the circumference of the first reduction assembly 2 and is spaced apart from the outer circumferential wall of the first transmission gear 21 by a certain distance.

[0050] When the transmission device is working, the main gear box 1 has lubricating grease, and when the first transmission gear 21 rotates, the lubricating grease attached to the first transmission gear 21 will be thrown out and separated from the first transmission gear 21. Since the first oil retaining ring 16 is arranged around the circumference of the first reduction assembly 2, the lubricating grease thrown out by the first transmission gear 21 can be blocked by the first oil retaining ring 16, so as to optimize the flow path of the lubricating grease in the main gear box 1, so that the chamber formed by the first oil retaining ring 16 is filled with lubricating grease, thereby the first transmission gear 21 can be fully lubricated, so as to prolong the service life of the first reduction assembly 2.

[0051] Similarly, as shown in FIG. 6, the swing gear box 31 is provided with a second oil retaining ring 314, and at least part of the second transmission gear 321 is installed in the second oil retaining ring 314. For example, the second oil retaining ring 314 is formed on the bottom wall and / or the top wall in the swing gear box 31. The second oil retaining ring 314 is arranged around the circumference of the second reduction assembly 32 and is spaced apart from the outer circumferential wall of the second transmission gear 321 by a certain distance.

[0052] When the transmission is working, the swing gear box 31 has lubricating grease, the lubricating grease thrown out by the second transmission gear 321 can be blocked by the second oil retaining ring 314 to optimize the flow path of the lubricating grease in the swing gear box 31, so that the cavity formed by the second oil retaining ring 314 is filled with lubricating grease, thereby the second transmission gear 321 can be fully lubricated to prolong the service life of the second reduction assembly 32.

[0053] Optionally, as shown in FIG. 3 and FIG. 8, the wall surface of the main gear box 1 is provided with first reinforcing ribs 17, and the first reinforcing ribs 17 can be multiple, and the multiple first reinforcing ribs 17 are arranged on the wall surface of the main gear box 1 at intervals. The first reinforcing ribs 17 can be arranged at the weak positions of the main gear box 1 to improve the structural strength of the main gear box 1.

[0054] For example, part of the first reinforcing ribs 17 is connected with the first oil retaining ring 16. It can be understood that one end of the first reinforcing ribs 17 is connected with the wall surface of the main gear box 1, and the other end of the first reinforcing ribs 17 is connected with the wall surface of the first oil retaining ring 16, thereby the structural strength of the first oil retaining ring 16 can be improved.

[0055] As shown in FIG. 6, the wall surface of the swing gear box 31 is provided with second reinforcing ribs 315, and the second reinforcing ribs 315 can be multiple, and the multiple second reinforcing ribs 315 are arranged on the wall surface of the swing gear box 31 at intervals. The second reinforcing ribs 315 can be arranged at the weak positions of the swing gear box 31 to improve the structural strength of the swing gear box 31.

[0056] For example, part of the second reinforcing ribs 315 is connected with the second oil retaining ring 314. It can be understood that one end of the second reinforcing ribs 315 is connected with the wall surface of the swing gear box 31, and the other end of the second reinforcing ribs 315 is connected with the wall surface of the second oil retaining ring 314, thereby the structural strength of the second oil retaining ring 314 can be improved.

[0057] In an example, as shown in FIG. 1 and FIG. 2, the main gear box 1 includes a bottom shell 14, a main shell 11, a main cover 12 and an upper cover 13, the bottom shell 14 is arranged at the lower end of the main shell 11 and defines a first gear cavity 151, the main cover 12 is arranged at the upper end of the main shell 11 and defines a swing cavity 152, and the upper cover 13 is arranged at the upper end of the main cover 12 and defines a swing control cavity 153. The first reduction assembly 2 is arranged in the main gear box 1, the swing gear box 31 is arranged in the swing cavity 152, and the swing gear box 31 is swingable in the swing cavity 152. By arranging the swing cavity 152, the problem that the swing gear box 31 interferes with other parts of the cleaning equipment when the swing gear box 31 swings can be avoided, the probability that the swing gear box 31 stalls when it swings is reduced, and the reliability of the swing module working is improved.

[0058] As shown in FIG. 9, the transmission further comprises a swing control assembly 4, which is arranged in the swing control cavity 153 and has a third input end and a third output end. The third input end is configured to be connected with the second motor, and the third output end is in transmission connection with the swing gear box 31 to drive the swing gear box 31 to rotate around the circumference of the middle shaft 322. The second motor is arranged outside the main gear box 1, and the second motor drives the swing control assembly 4 in the swing control cavity 153 to act, so as to swing the swing gear box 31 between the extended position and the retracted position. For example, the second motor can be a brushless motor, so as to prolong the service life of the second motor.

[0059] Optionally, as shown in FIGS. 5 to 7, the swing gear box 31 comprises a swing shell 311, a swing top cover 312 and a retainer 313. The swing top cover 312 is arranged at the upper end of the swing shell 311 and defines a second gear cavity 316 with the swing shell 311. The second reduction assembly 32 is arranged in the second gear cavity 316, and the third output end is in transmission connection with the swing top cover 312. The retainer 313 is arranged at the lower end of the swing shell 311, and the rotating sleeve 33 is rotatably arranged in the retainer 313. The transmission further comprises a plurality of rollers 34. Part of the rollers 34 are rotatably arranged between the swing top cover 312 and the main cover body 12, and the other part of the rollers 34 are rotatably arranged between the rotating sleeve 33 and the swing shell 311. For example, the roller 34 can be a cylindrical roller 34, and of course, the roller 34 can also be understood as a spherical ball.

[0060] The transmission of the embodiment of the present disclosure can avoid the problem of shaking of the rotating sleeve 33 when rotating by arranging the retainer 313, and is beneficial to improve the stability of the rotating sleeve 33 when rotating. In addition, since part of the rollers 34 are rotatably arranged between the rotating sleeve 33 and the swing shell 311, the rotation of the rotating sleeve 33 can be assisted, and the friction loss of the rotating sleeve 33 can be reduced. By rotatably arranging the roller 34 between the swing top cover 312 and the main cover body 12, the swing of the swing gear box 31 between the extended position and the retracted position can be assisted, and the stability of the swing gear box 31 when swinging can be improved. Thus, the axial stability of the rotating sleeve 33 when rotating can be ensured, and the cleaning effect can be improved.

[0061] In an example, as shown in FIG. 9, the swing control assembly 4 comprises a third transmission gear 41, a fourth transmission gear 42 and a swing cam 43. The third input is arranged on the third transmission gear 41, and the output shaft of the second motor is coaxially connected with the third transmission gear 41. The fourth transmission gear 42 is in meshing transmission with the third transmission gear 41, and the fourth transmission gear 42 has a push rod 421 which is in abutment with the swing cam 43. The swing cam 43 is rotationally connected with the main cover 12, and the swing top cover 312 has an upwardly protruding connecting portion 3121 which is located on the same axis as the intermediate shaft 322, and the swing cam 43 is fixedly connected with the connecting portion 3121. In other words, when the swing cam 43 swings, the swing cam 43 can drive the swing gear box 31 to swing synchronously around the axis of the intermediate shaft 322.

[0062] The second motor can drive the push rod 421 to rotate through the third transmission gear 41, so as to swing the swing cam 43 between the first position and the second position. It can be understood that the first position and the second position of the swing cam 43 correspond to the extended position and the retracted position of the swing gear box 31 respectively. When the push rod 421 swings the swing cam 43 to the first position, the swing gear box 31 is correspondingly moved to the extended position, and when the push rod 421 swings the swing cam 43 to the second position, the swing gear box 31 is correspondingly moved to the retracted position.

[0063] In order to improve the speed of swinging the swing cam 43 between the first position and the second position, an elastic member 44 can be arranged on the swing cam 43. For example, the elastic member 44 can be a tension spring or a torsion spring. In the example of the present application, the elastic member 44 is a tension spring. One end of the elastic member 44 is fixed on the main cover 12, and the other end of the elastic member 44 is eccentrically connected with the swing cam 43.

[0064] In order to limit the movement of the push rod 421, a limit switch 45 can be arranged on the main cover 12. When the push rod 421 contacts the limit switch 45, it indicates that the movement of the push rod 421 reaches the specified position (the first position or the second position).

[0065] Optionally, one of the outer periphery of the main shell 11 and the outer edge of the main cover 12 is provided with a first convex stop, and the other is provided with a first concave stop. The first convex stop is in position matching with the first concave stop. One of the outer periphery of the swing shell 311 and the outer edge of the swing top cover 312 is provided with a second convex stop, and the other is provided with a second concave stop. The second convex stop is in position matching with the second concave stop. It can be understood that the splicing positions of the first gear cavity 151 and the second gear cavity 316 are connected through the convex stop and the concave stop, so as to avoid the problem of leakage of lubricating grease from the splicing positions of the first gear cavity 151 and the second gear cavity 316, and to improve the sealing effect of the first gear cavity 151 and the second gear cavity 316.

[0066] Optionally, as shown in FIG. 1 and FIG. 9, at least one of the bottom surface of the bottom shell 14 and the upper end surface of the main cover body 12 is provided with a wire slot 18. In the example of the present application, the bottom surface of the bottom shell 14 and the upper end surface of the main cover body 12 are both provided with the wire slot 18. It can be understood that the wire slot 18 can be a groove structure, or a plurality of limiting protrusions arranged at intervals to form a wire channel structure. The transmission device of the embodiment of the present application can collect the wires of the transmission device by providing the wire slot 18, so as to solve the problem of wire twisting between the transmission device and the moving part, and improve the reliability of the cleaning equipment in operation.

[0067] The cleaning equipment of another embodiment of the present application comprises the transmission device of the embodiment of the present application. For example, the cleaning equipment can be a sweeping robot, a mopping robot or a sweeping and mopping integrated robot. The technical advantages of the cleaning equipment of the embodiment of the present application are the same as those of the transmission device of the above-mentioned embodiment, which will not be described here.

[0068] In the description of the present application, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0069] In addition, the terms "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0070] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, can be fixedly connected, or can be detachably connected, or can be integrated; can be mechanically connected, or can be electrically connected or in communication with each other; can be directly connected, or can be indirectly connected through an intermediate medium; can be the internal communication or interaction relationship of two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0071] In the present disclosure, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly contacting the first and second features, or indirectly contacting the first and second features through an intermediate medium. Also, the first feature "over", "above" and "on top of" the second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal level than the second feature. The first feature "under", "below" and "underneath" the second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal level than the second feature.

[0072] In the present disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present disclosure. Illustrative expressions of the above terms in the present specification are not necessarily referring to the same embodiment or example. Also, the particular features, structures, materials or characteristics can be combined in any suitable manner in one or more embodiments or examples. In addition, the skilled person can combine and combine the features of different embodiments or examples described in the present specification and the features of different embodiments or examples, without contradiction.

[0073] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary, and are not to be construed as limiting the present disclosure, and the changes, modifications, replacements and variations of the above embodiments made by those of ordinary skill in the art are within the protection scope of the present disclosure.

Claims

1. A transmission device, comprising: Main gearbox; The first reduction assembly includes multiple sets of first transmission gears, which are arranged in the main gearbox along a preset direction and mesh sequentially. Each set of first transmission gears has a first input end and a first output end, and the first input end is used to drive the output shaft of the first motor. A swing module is used to connect a cleaning component. The first output end is connected to the swing module in a transmission manner to drive the swing module to rotate.

2. The transmission device according to claim 1, wherein, In multiple sets, the first transmission gears are all helical gears. And / or, multiple sets of the first transmission gears include gear number one, gear number two, gear number three and gear number four, wherein gear number one, gear number two, gear number three and gear number four mesh in sequence, the first input end is located on gear number one and the first output end is located on gear number four.

3. The transmission device according to claim 2, wherein, The first gear is a metal gear, while the second, third, and fourth gears are all plastic gears.

4. The transmission device according to any one of claims 1 to 3, wherein, The swing module includes a swing gearbox, a second reduction assembly, and a rotating sleeve. The second reduction assembly includes an intermediate shaft and multiple sets of second transmission gears. The intermediate shaft passes through the swing gearbox and the main gearbox. The multiple sets of second transmission gears are arranged in the swing gearbox along a preset direction and mesh sequentially. The multiple sets of second transmission gears have a second input end and a second output end. The first output end and the second input end are both connected to the intermediate shaft, and the second output end is connected to the rotating sleeve. The angle of the swing gearbox around the intermediate shaft is adjustable.

5. The transmission device according to claim 4, wherein, The main gearbox is provided with a first oil baffle ring, and at least a portion of the first transmission gear is installed in the first oil baffle ring. The oscillating gearbox is provided with a second oil baffle ring, and at least a portion of the second transmission gear is installed in the second oil baffle ring.

6. The transmission device according to claim 5, wherein, The wall of the main gearbox is provided with a first reinforcing rib, and at least part of the first reinforcing rib is connected to the first oil baffle ring; And / or, the wall of the oscillating gearbox is provided with a second reinforcing rib, and at least part of the second reinforcing rib is connected to the second oil baffle ring.

7. The transmission device according to any one of claims 4 to 6, wherein, The swing angle range of the swing gearbox around the intermediate shaft is A, where 75°≤A≤85°.

8. The transmission device according to any one of claims 4 to 7, wherein, The main gearbox includes a bottom shell, a main housing, a main cover, and a top cover. The bottom shell is located at the lower end of the main housing and defines a first gear cavity. The main cover is located at the upper end of the main housing and defines a swing cavity. The top cover is located at the upper end of the main cover and defines a swing control cavity. The first deceleration assembly is located in the main gearbox, and the swing gearbox is located in the swing cavity. The transmission device also includes a swing control assembly located in the swing control cavity. The swing control assembly has a third input end and a third output end. The third input end is used to connect to a second motor, and the third output end is connected to the swing gearbox for transmission, so as to drive the swing gearbox to rotate circumferentially around the intermediate shaft.

9. The transmission device according to claim 8, wherein, The oscillating gearbox includes an oscillating shell, an oscillating top cover, and a retainer. The oscillating top cover is located at the upper end of the oscillating shell and defines a second gear cavity with the oscillating shell. The second reduction assembly is located in the second gear cavity. The third output end is kinetically connected to the oscillating top cover. The retainer is located at the lower end of the oscillating shell. The rotating sleeve is rotatably installed in the retainer. The transmission device also includes multiple rollers. Some of the rollers are rotatably installed between the oscillating top cover and the main cover, and other rollers are rotatably installed between the rotating sleeve and the oscillating shell.

10. The transmission device according to claim 9, wherein, One of the outer periphery of the main housing and the outer edge of the main cover is provided with a first convex stop, and the other is provided with a first concave stop. The first convex stop and the first concave stop are aligned and engaged. One of the outer periphery of the swing shell and the outer edge of the swing top cover is provided with a second convex stop, and the other is provided with a second concave stop. The second convex stop and the second concave stop are aligned and engaged. And / or, at least one of the bottom surface of the bottom shell and the upper surface of the main cover is provided with a wiring groove.

11. A cleaning device comprising the transmission device according to any one of claims 1-10.

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