Cleaning brush

Abstract

The utility model relates to a cleaning brush which comprises a shell, a driving motor and a speed reducing mechanism. The driving motor is installed in the shell. The speed reducing mechanism is installed on the shell. The input end of the speed reducing mechanism is connected to an output shaft of the driving motor, and the output end of the speed reducing mechanism is connected with an output connector. At least one speed reduction planetary gear set is arranged between the input end and the output end of the speed reduction mechanism. When the driving motor rotates continuously, the brush body can rotate continuously. When the brush body is attached to the surface of the to-be-cleaned position, the brush body can continuously wipe the surface of the to-be-cleaned position through rotation, the situation that cleaning tools need to be repeatedly wiped through manpower is avoided, the situation that the cleaning efficiency is reduced due to fatigue of a human body can be avoided, and the cleanliness of the home environment is guaranteed. In addition, the torque generated when the output connector rotates is increased relative to the output shaft of the driving motor, so that the brush body can be prevented from stopping rotating due to the fact that the resistance of the surface of the to-be-cleaned position is too large, and stable operation of the cleaning brush is facilitated.

Description

Technical Field

[0001] This application relates to the technical field of cleaning brush devices, and particularly to a cleaning brush. Background Art

[0002] Due to the increase in the degree of social industrialization, people's work has gradually become more professional, social division of labor has become more detailed, and professional people spend most of their time at work, with relatively increased income, but relatively less time spent on family.

[0003] Traditional household cleaning mainly relies on manual cleaning, such as washing dishes, cleaning the tabletop, cleaning stains on the cabinet, cleaning the wall surface, cleaning stains in the corners of the floor, etc. In some household cleaning, it is necessary to manually wipe the surface of the cleaning position with the cleaning tool repeatedly. When manually operating the cleaning tool to wipe, the general reciprocating wiping speed is relatively slow, resulting in low efficiency of household cleaning and unable to ensure the cleanliness of the home environment. Utility Model Content

[0004] Based on this, the present utility model provides a cleaning brush that can solve or at least alleviate the above technical problems.

[0005] The present utility model provides a cleaning brush, comprising:

[0006] A housing;

[0007] A driving motor, installed inside the housing; and

[0008] A speed reduction mechanism, installed on the housing; the input end of the speed reduction mechanism is connected to the output shaft of the driving motor, the output end of the speed reduction mechanism is connected with an output joint; at least one set of reduction planetary gear sets is provided between the input end and the output end of the speed reduction mechanism.

[0009] For the above cleaning brush, the other end of the output joint is used to install the brush body. When the driving motor runs inside the housing, the output shaft of the driving motor transmits torque to the input end of the speed reduction mechanism. The input end of the speed reduction mechanism transmits torque to the output end through one or more sets of reduction planetary gear sets. Therefore, the rotational speed of the output end of the speed reduction mechanism is lower than that of its input end, and at the same time, the torque of the output end is greater than that of its input end. When the driving motor rotates continuously, the brush body can rotate continuously. When the brush body fits to the surface of the position to be cleaned, the brush body can continuously wipe the surface of the position to be cleaned by rotating, avoiding the need to manually wipe the cleaning tool repeatedly, and avoiding the reduction of cleaning efficiency due to human fatigue, which is beneficial to ensuring the cleanliness of the home environment. In addition, since the torque during the rotation of the output joint is increased relative to the output shaft of the driving motor, it can prevent the brush body from stopping due to excessive resistance on the surface of the position to be cleaned, which is beneficial to the stable operation of the cleaning brush.

[0010] In one embodiment, the reduction planetary gear set includes a central gear, an internal gear, and at least one intermediate planetary gear; the at least one intermediate planetary gear is disposed between the outer periphery of the central gear and the inner periphery of the internal gear; the at least one intermediate planetary gear is meshed with the central gear; the internal gear is meshed with the at least one intermediate planetary gear; the central gear is coupled to the output shaft of the drive motor; the at least one intermediate planetary gear is coupled to the output joint.

[0011] In one embodiment, the reduction mechanism includes a housing; the reduction planetary gear set is disposed within the housing; the internal gear is integrally provided with the inner peripheral wall of the housing.

[0012] In one embodiment, the outer shell includes a first housing and a second housing; a partial edge of the first housing abuts against a partial edge of the second housing; a first inner wall block and a first support cylinder portion are connected to the inner surface of the first housing; the two first inner wall blocks are spaced apart; the first support cylinder portion is disposed outside the two first inner wall blocks; a second inner wall block and a second support cylinder portion are connected to the inner surface of the second housing; the two second inner wall blocks are spaced apart; the second support cylinder portion is disposed outside the two second inner wall blocks; a partial edge of the first inner wall block abuts against a partial edge of the corresponding second inner wall block; one end of the first support cylinder portion is disposed opposite to one end of the second support cylinder portion.

[0013] In one embodiment, a first edge groove is provided at the edge of one of the first inner wall block and the second inner wall block, and a first edge convex portion is provided at the edge of the other; the first edge groove can accommodate the first edge convex portion; the first edge groove also accommodates a first seal.

[0014] In one embodiment, a third support cylinder portion is connected to the inner surface of one of the first housing and the second housing, and a positioning rod is connected to the other; the positioning rod is inserted into the third support cylinder portion.

[0015] In one embodiment, a second seal is sleeved on the outer periphery of the output joint; the second seal abuts against the outer surface of the outer shell; along the direction close to the outer surface of the outer shell, the outer wall of the second seal is provided with an expanding transition.

[0016] In one embodiment, the cleaning brush further includes a limit bracket; the limit bracket is connected between the drive motor and the housing; an axial positioning groove is provided on the inner surface of the housing; the internal space of the axial positioning groove surrounds the drive motor in the circumferential direction; the outer peripheral edge of the limit bracket is received in the axial positioning groove; a structural fit is formed between the housing and the limit bracket to limit the relative rotation of the limit bracket with respect to the housing.

[0017] In one embodiment, it further includes an extension rod; the housing includes a first housing, a second housing and a tail cover; the first housing and the second housing are respectively provided with a front end and a tail end; the tail end is arranged farther from the output joint than the front end; the tail cover surrounds the outer peripheries of the tail ends of the first housing and the second housing; the tail ends of the first housing and the second housing jointly enclose a docking groove; one end of the extension rod is threadedly inserted into the docking groove.

[0018] In one embodiment, a light-emitting member is also installed on the housing; the light-emitting member can generate illumination light that shoots towards the outer peripheral side of the output joint. Description of the Drawings

[0019] Figure 1 A three-dimensional schematic diagram of the cleaning brush according to an embodiment of the present application.

[0020] Figure 2 is Figure 1 A partial schematic diagram of the cleaning brush shown.

[0021] Figure 3 is Figure 1 An exploded schematic diagram of the cleaning brush shown.

[0022] Figure 4 is Figure 1 An exploded schematic diagram of the cleaning brush shown from another angle.

[0023] Figure 5 is Figure 4 An exploded schematic diagram of the output joint, the front cover and the speed reduction mechanism shown after being separated.

[0024] Figure 6 is Figure 4 An exploded schematic diagram of the output joint, the front cover and the speed reduction mechanism shown from another angle after being separated.

[0025] Figure 7 is Figure 6 An exploded schematic diagram of the speed reduction mechanism shown.

[0026] Figure 8 is Figure 6 An exploded schematic diagram of the speed reduction mechanism shown from another angle.

[0027] Figure 9 The Figure 1 structural schematic diagram of the inner side of the first housing in the cleaning brush shown in the figure.

[0028] Figure 10 The Figure 1 structural schematic diagram of the inner side of the second housing in the cleaning brush shown in the figure.

[0029] Reference numerals: 100, cleaning brush; 20, outer shell; 21, first housing; 211, first barrel part; 212, positioning rod; 213, docking groove; 214, second positioning groove; 215, third positioning groove; 216, second edge convex part; 217, slot position; 218, reserved opening; 22, second housing; 221, second barrel part; 222, third barrel part; 223, positioning step part; 224, third edge convex part; 23, first inner wall block; 231, accommodating space; 232, first edge groove; 24, second inner wall block; 241, first edge convex part; 25, axial positioning groove; 242, first positioning block; 26, end cap; 27, front cover; 271, second edge groove; 272, second positioning block; 273, third seal; 28, charging waterproof cap; 281, hook part; 30, drive motor; 31, limit bracket; 311, fourth barrel part; 312, fifth barrel part; 313, first positioning groove; 32, fixed bracket; 321, ear part; 40, reduction mechanism; 41, reduction planetary gear set; 411, central gear; 412, intermediate planetary gear; 413, internal gear; 42, transmission frame; 421, plate body; 422, cylindrical part; 43, housing; 44, housing cover; 441, inner barrel part; 442, ring part; 45, fourth seal; 50, output connector; 501, positioning installation groove; 51, brush body; 511, brush disc; 52, second seal; 60, extension rod; 70, electrical component; 71, light-emitting part; 72, main switch; 73, circuit board; 731, charging interface; 74, energy storage part; 75, battery level indicator; 76, light-transmitting switch cap; 77, lighting switch. Detailed implementation manners

[0030] Next, the technical solutions of the present application will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0031] In the description of the present application, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present application. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0032] In the description of the present application, it should be noted that unless otherwise clearly specified and limited, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, an integral connection, a mechanical connection, an electrical connection, a direct connection, an indirect connection through an intermediate medium, or a communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0033] The technical solutions provided by the embodiments of the present application will be introduced below with reference to the drawings.

[0034] Combined with Figures 1 to 10 As shown, the present application provides a cleaning brush 100. In some embodiments, after the cleaning brush 100 is installed on the brush body 51, through the rapid rotation of the brush body 51, cleaning operations such as washing dishes, cleaning the tabletop, cleaning cabinet stains, cleaning wall dust, sweeping the floor, or cleaning corner stains can be efficiently completed. In some embodiments, the cleaning brush 100 can also be used to clean the stove, sweep glass dust, sweep the ceiling, wash the bottom surface of the bathroom, wash the toilet, or wash the bathtub. In other embodiments, the cleaning brush 100 comes with its own brush body 51 and can be directly used for cleaning operations.

[0035] In some embodiments, combined with Figure 2 and Figure 6 As shown, the cleaning brush 100 includes: a housing 20, a drive motor 30, and a reduction mechanism 40. The drive motor 30 is installed inside the housing 20. The reduction mechanism 40 is installed in the housing 20. The input end of the reduction mechanism 40 is connected to the output shaft of the drive motor 30, and the output end of the reduction mechanism 40 is connected with an output joint 50. At least one set of reduction planetary gear sets 41 is provided between the input end and the output end of the reduction mechanism 40.

[0036] Specifically, the other end of the output joint 50 is used to mount the brush body 51. When the drive motor 30 operates within the housing 20, the output shaft of the drive motor 30 transmits torque to the input end of the reduction mechanism 40. The input end of the reduction mechanism 40 transmits torque to the output end through one or more sets of reduction planetary gear sets 41. Therefore, the rotational speed of the output end of the reduction mechanism 40 is lower than that of its input end, and at the same time, the torque of the output end is greater than that of its input end. When the drive motor 30 rotates continuously, the brush body 51 can be rotated continuously. When the brush body 51 is in contact with the surface of the position to be cleaned, the brush body 51 can continuously wipe the surface of the position to be cleaned by rotating, avoiding the need to wipe the cleaning tool back and forth manually many times, and avoiding the reduction of cleaning efficiency due to human fatigue, which is beneficial to ensuring the cleanliness of the home environment. In addition, since the torque during the rotation of the output joint 50 is increased relative to the output shaft of the drive motor 30, the brush body 51 can be prevented from stopping due to excessive resistance on the surface of the position to be cleaned, which is beneficial to the stable operation of the cleaning brush 100.

[0037] In some embodiments, in combination with Figure 2 as shown, the housing 20 has a front end and a rear end. The rear end is disposed farther from the output joint 50 than the front end. Correspondingly, the first housing 21 and the second housing 22 also respectively have a front end and a rear end.

[0038] In some embodiments, in combination with Figure 2 , Figure 9 and Figure 10As shown, the outer shell 20 includes a first housing 21 and a second housing 22. Part of the edge of the first housing 21 abuts against part of the edge of the second housing 22. The inner surface of the first housing 21 is connected with a first inner wall block 23 and a first support cylinder part 211. The two first inner wall blocks 23 are arranged at intervals. The first support cylinder part 211 is arranged outside the two first inner wall blocks 23. The inner surface of the second housing 22 is connected with a second inner wall block 24 and a second support cylinder part 221. The two second inner wall blocks 24 are arranged at intervals. The second support cylinder part 221 is arranged outside the two second inner wall blocks 24. Part of the edge of the first inner wall block 23 abuts against part of the edge of the corresponding second inner wall block 24. One end of the first support cylinder part 211 is arranged opposite to one end of the second support cylinder part 221. Specifically, the first inner wall blocks 23 and the second inner wall blocks 24 are arranged in one-to-one correspondence. The two first inner wall blocks 23 are spaced apart to form a certain accommodation space 231, and this accommodation space 231 communicates with the accommodation space 231 between the two second inner wall blocks 24. This accommodation space 231 can accommodate at least a driving motor 30. After the first support cylinder part 211 and the second support cylinder part 221 are butted, a fastener can be threaded through the first support cylinder part 211 and the second support cylinder part 221, so as to fix the relative positions of the first support cylinder part 211 and the second support cylinder part 221. Since the first support cylinder part 211 and the second support cylinder part 221 are connected between the first housing 21 and the second housing 22, the first housing 21 and the second housing 22 can be fixed in position, and thus the edge positions between the first inner wall block 23 and the second inner wall block 24 can maintain a stable abutting fit. Specifically, the first support cylinder part 211 and the second support cylinder part 221 can be multiple respectively.

[0039] In some embodiments, the fastener is a screw. One end of the fastener is threaded through the first support cylinder part 211. Part of the inner wall surface of the second support cylinder part 221 faces away from the first support cylinder part 211, and the other end of the fastener abuts against this inner part of the inner wall surface of the second support cylinder part 221, so as to lock the relative positions between the first support cylinder part 211 and the second support cylinder part 221.

[0040] Specifically, due to environmental factors, the cleaning brush 100 is often in an environment where it is vulnerable to water splashing. The first barrel portion 211 and the second barrel portion 221 are respectively disposed outside the accommodating space 231. Therefore, when there is a docking gap between the first barrel portion 211 and the second barrel portion 221, water may flow through the docking gap. Since the first barrel portion 211 is disposed outside the relative space of the two first inner wall blocks 23, and the second barrel portion 221 is disposed outside the relative space of the two second inner wall blocks 24, even if water flows through the docking gap between the first barrel portion 211 and the second barrel portion 221, under the abutting action of the edges of the first inner wall block 23 and the second inner wall block 24, the water cannot enter the accommodating space 231 where the driving motor 30 is housed. Therefore, the waterproof protection effect on the driving motor 30 or other electrical components can be improved.

[0041] In some embodiments, part of the edge of the first inner wall block 23 can directly abut against part of the edge of the second inner wall block 24. In some other embodiments, part of the edge of the first inner wall block 23 can also indirectly abut against part of the edge of the second inner wall block 24. In some embodiments, part of the edge of the first inner wall block 23 near the front edge of the first housing 21 coincides with the first housing 21. In some embodiments, part of the edge of the second inner wall block 24 near the front edge of the second housing 22 coincides with the second housing 22.

[0042] In some embodiments, in combination Figure 9 and Figure 10 As shown, a first edge groove 232 is provided on the edge of one of the first inner wall block 23 and the second inner wall block 24, and a first edge convex portion 241 is provided on the edge of the other. The first edge groove 232 can accommodate the first edge convex portion 241. A first seal is also accommodated in the first edge groove 232. Specifically, the first seal has flexibility and extends along the length direction of the first edge groove 232. When the first seal is accommodated in the first edge groove 232, the first edge convex portion 241 is embedded into the first edge groove 232, and the wall surface of the first edge groove 232 and the first edge convex portion 241 simultaneously hold the first seal, so that the gap between the first inner wall block 23 and the second inner wall block 24 can be filled and positioned by the first seal, making the accommodating space 231 enclosed by the first inner wall block 23 and the second inner wall block 24 have better sealing performance. Specifically, the first seal is made of rubber, silica gel or other flexible sealing materials. In some embodiments, the first seal is strip-shaped. In some embodiments, the first seal is a silica gel sealing strip. In some embodiments, the diameter of the first seal is smaller than the depth of the first edge groove 232, so as to ensure that the first edge groove 232 has a space for accommodating the first edge convex portion 241. In some embodiments, the diameter of the first seal is 1 mm.

[0043] In some embodiments, in combination Figure 2 , Figure 9 and Figure 10 As shown, the inner surface of one of the first shell 21 and the second shell 22 is connected with a third support tube portion 222, and the other is connected with a positioning rod 212. The positioning rod 212 is inserted into the third support tube portion 222, and the positioning rod 212 is inserted into the third support tube portion 222, which can play a positioning role between the first shell 21 and the second shell 22, so that the edge of the first inner wall block 23 and the edge of the second inner wall block 24, and the first support tube portion 211 and the second support tube portion 221 accurately correspond. In some embodiments, the third support tube portion 222 and the positioning rod 212 are both multiple, and are respectively connected to different positions of the first shell 21 and the second shell 22, so as to avoid the first shell 21 or the second shell 22 from deforming due to stress, resulting in the edge not being able to fit accurately. In some embodiments, the third support tube portion 222 is connected to the second shell 22, and the positioning rod 212 is connected to the first shell 21.

[0044] In some embodiments, in combination Figure 9 As shown, the third support tube 222 is disposed outside the two second inner wall blocks 24, and the positioning rod 212 is disposed outside the two first inner wall blocks 23, thereby preventing the third support tube 222 or the positioning rod 212 from affecting the accommodation space 231. In other embodiments, the third support tube 222 or the positioning rod 212 may also be disposed in the accommodation space 231.

[0045] In some embodiments, in combination Figure 9 and Figure 10 As shown, a positioning step portion 223 is provided at the tail end of one of the first shell 21 and the second shell 22, and a second positioning groove 214 is provided at the tail end of the other. The second positioning groove 214 is used to dock and accommodate the positioning step portion 223, so that the tail end of the first shell 21 and the tail end of the second shell 22 are accurately docked, and prevent the tail ends of the first shell 21 and the tail ends of the second shell 22 from having a large edge gap due to deformation.

[0046] In some embodiments, in combination Figure 2 , Figure 9 and Figure 10 As shown, the rear end of the first shell 21 and the rear end of the second shell 22 together enclose a docking groove 213 .

[0047] In some embodiments, in combination Figure 2 , Figure 9 and Figure 10As shown, the cleaning brush 100 further includes an extension rod 60. One end of the extension rod 60 is threadedly inserted into the docking groove 213. The inner wall surface of the docking groove 213 is formed with threads, so one end of the extension rod 60 is fixedly connected to the tail end of the housing 20 through threaded cooperation. When it is necessary to clean the bottom surface with the cleaning brush 100, the position of the brush body 51 can be adjusted by using the extension rod 60, so as to avoid the user having to squat down to hold the housing 20. In some embodiments, in scenarios such as washing dishes, washing the stove, and washing the bathtub, the housing 20 of the cleaning brush 100 can be held by hand for cleaning. In scenarios such as cleaning wall dust, the floor, and the corner, the extension rod 60 can be connected to the tail end of the housing 20 to increase the overall length of the cleaning brush 100 for convenient cleaning.

[0048] In some embodiments, in combination Figure 2 As shown, the housing 20 further includes a tail cap 26. The tail cap 26 surrounds the outer periphery of the tail ends of the first housing 21 and the second housing 22. The tail cap 26 generates a holding force on the outer peripheries of the first housing 21 and the second housing 22, and provides support to the tail ends of the first housing 21 and the second housing 22 from the outer peripheral side, avoiding the outward deformation of the tail ends of the first housing 21 and the second housing 22 due to the pressure of the extension rod 60, and preventing the extension rod 60 from loosening from the housing 20.

[0049] In some embodiments, the outer surface of the housing 20 tapers from the front end to the tail end. Thus, at the front end of the housing 20, a relatively large accommodating space 231 can be provided to accommodate the reduction mechanism 40 and the drive motor 30. The housing 20 reduces its volume by shrinking towards the tail end, and it is convenient for the hand to hold the part of the housing 20 near the tail end.

[0050] In some embodiments, in combination Figure 4 As shown, the outer surface of the housing 20 is bent from the front end to the tail end, so as to adjust the angle of the part of the housing 20 that can be held by the hand relative to the brush body 51, allowing the hand to hold the housing 20 at a more comfortable angle.

[0051] In some embodiments, in combination Figure 2 As shown, the housing 20 further includes a front cover 27. A part of the edge of the first housing 21 and a part of the edge of the second housing 22 are respectively in contact with the front cover 27. In some embodiments, the front edge of the first housing 21 and the front edge of the second housing 22 are respectively in contact with the front cover 27.

[0052] In some embodiments, in combination Figure 5 As shown, the edge of the front cover 27 is provided with a second edge groove 271. The internal space of the second edge groove 271 is annular. A third seal 273 is disposed in the second edge groove 271. In combination Figure 9 and Figure 10As shown, a second edge flange portion 216 is formed at the front end of the first housing 21, and a third edge flange portion 224 is formed at the front end of the second housing 22. The second edge flange portion 216 and the third edge flange portion 224 are respectively inserted into the second edge groove 271 from different circumferential positions and abut against the third seal 273, so that the third seal 273 can be used to fill the gaps between the first housing 21 and the front cover 27, and between the second housing 22 and the front cover 27, making the accommodation space 231 enclosed by the front cover 27, the first housing 21, and the second housing 22 have better sealing performance. In some embodiments, the third seal 273 is made of rubber, silica gel or other flexible sealing materials. In some embodiments, the third seal 273 is annular.

[0053] In some embodiments, at the intersection of the first housing 21, the second housing 22 and the front cover 27, silica gel or other sealing materials are covered, so as to prevent water ingress from affecting the operation of the drive motor 30 and the circuit board 73 in the case of an assembly gap or other gaps caused by stress at the intersection.

[0054] In some embodiments, in combination Figure 5 with Figure 9 As shown, a second positioning block 272 is connected to the inner side wall of the front cover 27, and the housing 20 is provided with a third positioning groove 215 for accommodating the second positioning block 272. By accommodating the second positioning block 272 in the third positioning groove 215, the angle of the front cover 27 relative to the housing 20 can be defined, which is beneficial to accurately complete the assembly of the cleaning brush 100. In some embodiments, the third positioning groove 215 is provided in the first housing 21.

[0055] In some embodiments, in combination Figures 5 to 8 As shown, the cleaning brush 100 further includes a limit bracket 31. The limit bracket 31 is connected between the drive motor 30 and the housing 20. The position of the limit bracket 31 is limited by the positioning of the housing 20. When the drive motor 30 is connected to the limit bracket 31, the drive motor 30 can be in a stable position within the housing 20.

[0056] In some embodiments, in combination Figure 4 , Figure 9 and Figure 10As shown, an axial positioning groove 25 is provided on the inner surface of the housing 20. The inner space of the axial positioning groove 25 surrounds the drive motor 30 circumferentially. The outer peripheral edge of the limit bracket 31 is received in the axial positioning groove 25, so as to prevent the limit bracket 31 from moving axially or radially. In some embodiments, the outer diameter of the axial positioning groove 25 corresponds to the outer diameter of the outer peripheral edge of the limit bracket 31. In some embodiments, axial positioning grooves 25 are respectively formed on the inner surfaces of the first housing 21 and the second housing 22. In some embodiments, the opening of the axial positioning groove 25 faces the center of the housing 20. In some embodiments, the opening of the axial positioning groove 25 provided on the first housing 21 faces the inner surface of the second housing 22. The opening of the axial positioning groove 25 provided on the second housing 22 faces the inner surface of the first housing 21.

[0057] In some embodiments, a structural fit is formed between the housing 20 and the limit bracket 31 that can limit the relative rotation of the limit bracket 31 with respect to the housing 20, so as to prevent the limit bracket 31 from rotating relative to the housing 20 due to the transmission of the drive motor 30. In some embodiments, in combination Figure 2 , Figure 7 and Figure 9 As shown, a first positioning groove 313 is provided on the outer peripheral edge of the limit bracket 31. The housing 20 is provided with a first positioning block 242, and the first positioning block 242 is received in the axial positioning groove 25. The first positioning block 242 is used to be correspondingly embedded in the first positioning groove 313. In some other embodiments, the outer peripheral edge of the limit bracket 31 and the inner space of the axial positioning groove 25 are respectively elliptical.

[0058] In some embodiments, the front cover 27 is connected to the limit bracket 31 by fasteners, so that the front cover 27 can be in a stable position relative to the first housing 21 and the second housing 22. In some embodiments, the limit bracket 31 is provided with a fourth barrel portion 311. The fastener passes through the front cover 27 and is threadedly passed through the fourth barrel portion 311.

[0059] In some embodiments, in combination Figure 6 and Figure 7 As shown, the cleaning brush 100 further includes a fixing bracket 32, and the fixing bracket 32 is connected between the drive motor 30 and the limit bracket 31. In some embodiments, the drive motor 30 is fixedly embedded in the fixing bracket 32. In some other embodiments, the main body of the drive motor 30 has a stepped transition surface facing away from the front cover 27, and the fixing bracket 32 abuts against the stepped transition surface, so that the drive motor 30 is limited between the fixing bracket 32 and the front cover 27.

[0060] In some embodiments, in combination Figure 6 and Figure 7As shown, a support ear portion 321 is formed on the outer periphery of the fixed bracket 32, and the support ear portion 321 is used to dock with the limit bracket 31. In some embodiments, the limit bracket 31 is provided with a fifth barrel portion 312. One of the support ear portion 321 and the fifth barrel portion 312 is provided with a mounting hole, and the other is provided with a threaded hole. A fastener is passed through the mounting hole and the threaded hole, so as to keep the fixed bracket 32 and the limit bracket 31 in a fixed position.

[0061] In some embodiments, in combination Figure 7 and Figure 8 As shown, the reduction planetary gear set 41 includes a central gear 411, an internal gear 413 and at least one intermediate planetary gear 412. At least one intermediate planetary gear 412 is disposed between the outer periphery of the central gear 411 and the inner periphery of the internal gear 413, and at least one intermediate planetary gear 412 is meshed with the central gear 411. The internal gear 413 is meshed with at least one intermediate planetary gear 412. The central gear 411 is connected to the output shaft of the drive motor 30. At least one intermediate planetary gear 412 is connected to one end of the output joint 50. Specifically, in the same-stage reduction planetary gear set 41, when the central gear 411 rotates, since the intermediate planetary gear 412 is meshed between the central gear 411 and the internal gear 413, the intermediate planetary gear 412 rotates both around its own central axis and around the central axis of the central gear 411. Specifically, the central axis of the central gear 411 coincides with the central axis of the drive motor 30. Specifically, the inner peripheral side of the internal gear 413 is meshed with the intermediate planetary gear 412. The central axis of the internal gear 413 coincides with the central axis of the drive motor 30.

[0062] In one embodiment, the module of the central gear 411 is 0.6 and the number of teeth is 12. The module of the intermediate planetary gear 412 is 0.6 and the number of teeth is 24. The module of the internal gear 413 is 0.6 and the number of teeth is 60. In some other embodiments, the module or the number of teeth of the central gear 411, the intermediate planetary gear 412 and the internal gear 413 can be adjusted according to the size of the reduction planetary gear set 41 or the need for torque transmission.

[0063] In some embodiments, a set of reduction planetary gear set 41 is provided between the input end and the output end of the reduction mechanism 40. In this reduction planetary gear set 41, the central gear 411 is fixedly sleeved on the output shaft of the drive motor 30.

[0064] In some embodiments, in combination Figure 7 and Figure 8As shown, there are more than two sets of reduction planetary gear sets 41 provided between the input end and the output end of the reduction mechanism 40. More than two sets of reduction planetary gear sets 41 form a sequential transmission fit between the input end and the output end. Specifically, in the transmission process, the previous-stage reduction planetary gear set 41 is closer to the drive motor 30 than the subsequent-stage reduction planetary gear set 41. The subsequent-stage reduction planetary gear set 41 is closer to the output joint 50 than the previous-stage reduction planetary gear set 41. In some embodiments, the central gear 411 in the foremost-stage reduction planetary gear set 41 is fixedly sleeved on the output shaft of the drive motor 30.

[0065] Specifically, by increasing the number of reduction planetary gear sets 41, the torque of the output joint 50 can be increased, so that the output joint 50 has a larger torque when the maximum power of the drive motor 30 is limited. Specifically, in the design, the number of reduction planetary gear sets 41 can be determined according to the intended application of the cleaning brush 100. In some embodiments, the cleaning brush 100 is used in scenarios with less force, such as washing dishes, cleaning dust on walls, and cleaning dust on tables. In the design, the number of reduction planetary gear sets 41 can be determined to be two. In some other embodiments, the cleaning brush 100 is used in scenarios with greater force, such as cleaning stoves, floors, corners, and toilets. In the design, the number of reduction planetary gear sets 41 can be determined to be three.

[0066] In some embodiments, the central gears 411 belonging to different reduction planetary gear sets 41 are the same in number of teeth and module. In some embodiments, the intermediate planetary gears 412 belonging to different reduction planetary gear sets 41 are the same in number of teeth and module.

[0067] In some embodiments, when there is at least one set of reduction planetary gear set 41 between a set of reduction planetary gear set 41 and the output joint 50, the angular velocity of the revolution motion of the intermediate planetary gear 412 in the previous set of reduction planetary gear set 41 is equal to the angular velocity of the central gear 411 of the next stage.

[0068] In some embodiments, when there is no other reduction planetary gear set 41 between a set of reduction planetary gear set 41 and the output joint 50, the angular velocity of the revolution motion of the intermediate planetary gear 412 in this reduction planetary gear set 41 is equal to the angular velocity of the output joint 50.

[0069] In some embodiments, in combination Figure 5 、 Figure 7 and Figure 8 as shown, the reduction mechanism 40 further includes a transmission frame 42, and one side of the transmission frame 42 is connected to all the intermediate planetary gears 412 in the same reduction planetary gear set 41.

[0070] In some embodiments, when a reduction planetary gear set 41 is provided between the other side of the transmission frame 42 and the output joint 50, the other side of the transmission frame 42 is fixedly connected to the central gear 411 in another reduction planetary gear set 41. Further, the central gear 411 is connected to the centroid position on the other side of the transmission frame 42. In some embodiments, in combination with Figure 5 , Figure 7 and Figure 8 as shown, the transmission frame 42 includes a plate body 421 and a plurality of cylindrical portions 422 connected to one side of the plate body 421. The number of the cylindrical portions 422 corresponds to the number of the intermediate planetary gears 412. Each cylindrical portion 422 is rotatably inserted into one of the intermediate planetary gears 412 in a reduction planetary gear set 41. Therefore, when the intermediate planetary gear 412 revolves around the central axis of the central gear 411, the intermediate planetary gear 412 pushes the transmission frame 42 to rotate through the cylindrical portion 422, so that the angular velocity of the transmission frame 42 is equal to the angular velocity of the revolution of the intermediate planetary gear 412. More specifically, the cylindrical portion 422 is rotatably inserted into the center position of the intermediate planetary gear 412. The other side of the plate body 421 is connected to the central gear 411 in another reduction planetary gear set 41. In some embodiments, the reduction planetary gear set 41 is provided with four intermediate planetary gears 412, and the transmission frame 42 is provided with four cylindrical portions 422, so as to disperse the torsion and friction of the intermediate planetary gears 412, reduce the friction and torque of a single intermediate planetary gear 412 and improve the service life of the intermediate planetary gears 412.

[0071] In some other embodiments, in combination with Figure 5 as shown, when there is no reduction planetary gear set 41 between the other side of the transmission frame 42 and the output joint 50, the other side of the transmission frame 42 is fixedly connected to the output joint 50. Specifically, the other side of the plate body 421 of the transmission frame 42 is connected to the output joint 50.

[0072] In some embodiments, when only one intermediate planetary gear 412 is provided between the outer circumference of the central gear 411 and the inner circumference of the internal gear 413, a radial limit fit is formed between the center of the transmission frame 42 and the center position of the central gear 411, so that their central axes coincide. In some embodiments, the transmission frame 42 may be provided with a cylindrical portion 422 for rotatably inserting into the central gear 411 at the center position, so that the rotation axis of the transmission frame 42 can be kept stable when there is only a single intermediate gear.

[0073] In some embodiments, when there are two or more intermediate planetary gears 412 provided between the outer periphery of the central gear 411 and the inner periphery of the internal gear 413, the intermediate planetary gears 412 are evenly distributed around the outer periphery of the central gear 411, so that the force between the transmission frame 42 and the intermediate planetary gears 412 can be more balanced.

[0074] In some embodiments, as shown in Figure 8 the transmission frames 42 provided between different reduction planetary gear sets 41 may have the same shape structure.

[0075] In some embodiments, as shown in Figure 6 and Figure 7 the reduction mechanism 40 includes a housing 43. The reduction planetary gear sets 41 are arranged inside the housing 43. The internal gear 413 is integrally provided with the inner peripheral wall of the housing 43. Since the internal gear 413 is integrally connected to the inner peripheral wall of the housing 43, the operation of installing the internal gear 413 into the housing 43 is eliminated, which is beneficial to simplifying the assembly of the reduction mechanism 40. In some embodiments, by machining gear textures on the inner wall of the embryo of the housing 43, the internal gear 413 is formed inside the housing 43. In some embodiments, the housing 43 is fixedly arranged relative to the main body of the drive motor 30. In some embodiments, the internal gears 413 belonging to different reduction planetary gear sets 41 are identical in terms of the number of teeth, module, and circumferential angle. Therefore, several internal gears 413 on the inner peripheral wall of the housing 43 form an internal gear 413 with a relatively large axial length, so it can be understood that multiple reduction planetary gear sets 41 share one internal gear 413.

[0076] In some embodiments, the output connector 50 is in a cylindrical shape. One end of the output connector 50 is connected to the output end of the reduction mechanism 40. A nested fit is formed between the other end of the output connector 50 and the brush body 51.

[0077] The output connector 50 and the front cover 27 are made of rigid materials respectively, and it is difficult to eliminate the gap between them. In some embodiments, as shown in Figure 4 and Figure 6 a second seal 52 is sleeved on the outer periphery of the output connector 50. The second seal 52 abuts against the outer surface of the housing 20, so that the second seal 52 can play a sealing role between the output connector 50 and the housing 20, preventing water from entering the interior of the housing 20 through the gap between the output connector 50 and the housing 20. In some embodiments, an interference fit is formed between the inner peripheral portion of the second seal 52 and the outer periphery of the output connector 50, so that the second seal 52 can be closely attached to the outer periphery of the output connector 50. In some embodiments, the frictional force between the second seal 52 and the output connector 50 is greater than the frictional force between the second seal 52 and the outer surface of the housing 20, so the second seal 52 rotates with the output connector 50.

[0078] In some embodiments, in combination with Figure 6 As shown, a positioning and mounting groove 501 is provided on the outer peripheral side of the output connector 50, and the positioning and mounting groove 501 is arranged around the outer periphery of the output connector 50. The inner peripheral part of the second seal 52 is received in the positioning and mounting groove 501. The width of the positioning and mounting groove 501 in the axial direction corresponds to the width of the inner peripheral part of the second seal 52, so as to be able to define the position of the second seal 52 in the axial direction of the output connector 50, which is beneficial to the second seal 52 stably abutting against the outer surface of the housing 20.

[0079] In some embodiments, the second seal 52 is made of soft silicone material, so that it can be sleeved into the positioning and mounting groove 501 through stretching deformation.

[0080] In some embodiments, in combination with Figure 5 and Figure 6 As shown, along the direction close to the outer surface of the housing 20, the outer wall of the second seal 52 is arranged in an expanding transition. The outer wall of the second seal 52 forms a large end and a small end through axial expansion. The large end of the second seal 52 forms an annular plane, and this plane abuts against the outer surface of the housing 20. In some embodiments, this plane abuts against the outer surface of the front cover 27. When static, due to the extrusion of the large end of the second seal 52, it can prevent water flow from flowing into the gap between the output connector 50 and the housing 20. After the drive motor 30 runs, the second seal 52 rotates together with the output connector 50. Since the outer wall of the second seal 52 undergoes a slight deformation, the outer wall of the second seal 52 extrudes the large end of the second seal 52, generating a centripetal pressure perpendicular to the outer surface of the front cover 27 on the large end of the second seal 52. The large end of the second seal 52 is subject to the frictional force of the front plane of the front cover 27. Thus, when the output connector 50 and the second seal 52 are in a rotating state, the second seal 52 and the front cover 27 can prevent domestic flushing water from entering the gap between the output connector 50 and the housing 20. Therefore, a waterproof structure is formed among the output connector 50, the second seal 52, the drive motor 30 and the front cover 27.

[0081] In some embodiments, in combination with Figure 6 and Figure 7 As shown, the reduction mechanism 40 includes a housing cover 44. The housing cover 44 and the housing 43 jointly enclose a space capable of accommodating the reduction planetary gear set 41. The output connector 50 rotatably penetrates through the housing cover 44. In some embodiments, the housing 43 of the reduction mechanism 40 abuts between the main body of the drive motor 30 and the housing cover 44.

[0082] In some embodiments, in combination with Figures 6 to 8As shown, the shell cover 44 includes an inner cylinder portion 441 and an annular body portion 442 connected to the outer periphery of the inner cylinder portion 441. The inner cylinder portion 441 is positioned and inserted into the front cover 27 of the outer shell 20. The output connector 50 rotatably penetrates through the inner cylinder portion 441. The annular body portion 442 is accommodated within the outer shell 20 and is disposed opposite to the interior of the housing 43. A fourth seal 45 is abutted between the outer surface of the annular body portion 442 and the front cover 27. The fourth seal 45 is in the shape of a thin ring. The fourth seal 45 is disposed around the inner cylinder portion 441 and abuts between the annular body portion 442 and the inner surface of the front cover 27, so as to prevent water flow through the gap between the shell cover 44 and the front cover 27. Therefore, another waterproof structure is formed among the fourth seal 45, the shell cover 44 and the front cover 27. When the second seal 52 fails due to external force deformation, the fourth seal 45 can prevent water flow from entering the outer shell 20. In some embodiments, the fourth seal 45 is made of EVA cotton. In some embodiments, both sides of the fourth seal 45 are adhesively bonded to the outer surface of the annular body portion 442 and the front cover 27 respectively.

[0083] In some embodiments, in combination with Figure 6 As shown, the fourth seal 45 also abuts between one end of the fourth support cylinder portion 311 and the front cover 27, so as to prevent liquid from flowing into the outer shell 20 through the gap between one end of the fourth support cylinder portion 311 and the front cover 27. Specifically, one end of the fourth support cylinder portion 311 is fixed to the front cover 27 by a fastener.

[0084] In some embodiments, in combination with Figure 1 and Figure 3 As shown, the brush body 51 includes a brush plate 511 detachably connected to the output connector 50 and a brush head connected to the brush plate 511. The brush plate 511 supports the brush head. The brush head is used to contact the surface of the position to be cleaned. In some embodiments, the brush head is connected to the brush plate 511 by a magic tape with strong adhesion. In some embodiments, the brush head is made of materials such as sponge or soft cloth for dishwashing, dust cleaning or floor cleaning. In some other embodiments, the brush head is a brush for scrubbing the toilet, scrubbing the bathroom, cleaning the stains on the stove or scrubbing the bathtub. In some embodiments, the brush plate 511 is in the shape of a disc.

[0085] In some embodiments, in combination with Figure 2 As shown, the cleaning brush 100 is further installed with a lighting member 71 on the outer shell 20. The lighting member 71 can generate illumination light rays directed to the outer peripheral side of the output connector 50. When the brush body 51 is installed on the output connector 50, the illumination light rays can irradiate to the outer peripheral side of the brush body 51, thus helping the user to clearly see the stains around the brush body 51. In some embodiments, the lighting member 71 is embedded in the first housing 21. In some embodiments, the lighting member 71 uses a straw hat LED lamp or other electronic components capable of generating illumination light rays.

[0086] In some embodiments, the light-emitting member 71 is disposed near the front end of the housing 20. In some embodiments, the gap between the light-emitting member 71 and the first housing 21 is filled with silicone or other sealing materials to prevent water from entering the hole position corresponding to the light-emitting member 71 on the first housing 21.

[0087] In some embodiments, in combination Figure 2 As shown, the cleaning brush 100 also includes an electrical component 70. The electrical component 70 is at least used to control the operation of the drive motor 30. By operating the electrical component 70, the user can control the drive motor 30.

[0088] In some embodiments, in combination Figure 2 As shown, the electrical component 70 includes a main switch 72, a circuit board 73, and an energy storage member 74. The circuit board 73 is electrically connected to the main switch 72 and the energy storage member 74 respectively. The circuit board 73 is also electrically connected to the drive motor 30. In some embodiments, the main switch 72 is partially exposed outside the housing 20 for operation from outside the housing 20. In some embodiments, the energy storage member 74 is electrically connected to the circuit board 73 through a positive electrode wire and a negative electrode wire. In some embodiments, the positive electrode wire and the negative electrode wire are conductors. In some embodiments, the drive motor 30 is electrically connected to the circuit board 73 through a positive conductor and a negative conductor. In some embodiments, the positive conductor and the negative conductor are conductors. In some embodiments, the energy storage member 74 is a battery. In some embodiments, the circuit board 73 is accommodated in the accommodation space 231.

[0089] In some embodiments, in combination Figure 1 and Figure 2 As shown, the electrical component 70 further includes a power indicator 75 and a light-transmitting switch cap 76. The power indicator 75 is electrically connected to the circuit board 73. The power indicator 75 and the light-transmitting switch cap 76 are installed on the outside of the housing 20. In some embodiments, the power indicator 75 and the light-transmitting switch cap 76 are installed in the slot 217 outside the first housing 21. The first housing 21 and the light-transmitting switch cap 76 enclose a space for accommodating the power indicator 75. In some embodiments, the power indicator 75 is an LED lamp. In some embodiments, the light-transmitting switch cap 76 is made of a transparent PVC material. A strong double-sided adhesive is bonded near the slot 217 outside the first housing 21 to bond the light-transmitting switch cap 76 to the plane outside the slot 217 of the first housing 21, so as to achieve the purpose of waterproofing and assembly.

[0090] When using the cleaning brush 100, long-press the main switch 72 to start the circuit board 73, and the energy storage member 74 supplies power to the circuit board 73. After the circuit board 73 is started, the power indicator 75 lights up, and the lighting state of the power indicator 75 can be seen through the transparent area of the light-transmitting switch cap 76, thereby prompting the user that the cleaning brush 100 has been started.

[0091] When the main switch 72 is pressed again, the drive motor 30 starts, and the drive motor 30 rotates at a low speed. After the main switch 72 is pressed for the third time, the drive motor 30 switches to high-speed rotation, maximizing the power output, and the current on the energy storage element 74, the positive and negative wires of the energy storage element 74, and the positive and negative wires of the drive motor 30 reaches the maximum. By pressing the main switch 72, the drive motor 30 can be switched between the low-speed rotation and high-speed rotation states to meet the requirements of different usage scenarios. When the main switch 72 is long-pressed, the circuit of the circuit board 73 can be turned off to stop the drive motor 30 from operating.

[0092] In some embodiments, after the circuit board 73 is started by pressing the main switch 72, the power condition of the energy storage element 74 can be seen from the power area of the light-transmitting switch cap 76. In some embodiments, there are 5 power indicator lights 75. If all 5 power indicator lights 75 are on, the energy storage element 74 is in a state close to 100% full charge. If four power indicator lights 75 are on, the energy storage element 74 is in a state close to 80% power, and so on. If only one power indicator light 75 is on and the luminous area accounts for about 20% of the power area, and the energy storage element 74 is close to or less than about 20% power, the user can be reminded to charge in time after use.

[0093] To meet the usage requirements of various scenarios, the cleaning brush 100 can adopt two strategies to adjust the output torque of the drive motor 30: The first is during the design process, adjusting the number of reduction planetary gear sets 41 between the output shaft of the drive motor 30 and the output joint 50. By increasing the number of reduction planetary gear sets 41, the speed of the output joint 50 can be reduced and the output torque of the output joint 50 can be increased. The second is in scenarios with low torque requirements, reducing the input current of the drive motor 30, thereby reducing the output power of the drive motor 30 and reducing the output torque.

[0094] In some embodiments, in combination with Figure 1 and Figure 2 As shown, the electrical component 70 further includes a lighting switch 77. The circuit board 73 is electrically connected to the lighting switch 77 and the light-emitting element 71 respectively. When cleaning an area with poor lighting, press the lighting switch 77 to turn on the light-emitting element 71, and the light-emitting element 71 is electrically connected to the circuit board 73 through a conductor. The power of the light-emitting element 71 is small, and the energy consumed by the energy storage element 74 is low. In a cleaning area with brighter light, pressing the lighting switch 77 can turn off the lighting of the light-emitting element 71.

[0095] In some embodiments, in combination with Figure 2As shown, the circuit board 73 is provided with a charging interface 731. The charging interface 731 is used to dock one end of a charging cable to charge the energy storage component 74. In some embodiments, the charging interface 731 is in the form of a USB port. In some embodiments, the housing 20 is provided with a reserved port 218 corresponding to the charging interface 731. The charging interface 731 can be exposed outside the housing 20 through the reserved port 218.

[0096] In some embodiments, in combination Figure 2 As shown, a charging waterproof cap 28 is connected to the housing 20. When the charging interface 731 does not need to dock the charging cable, the charging waterproof cap 28 can be covered on the reserved port 218 to prevent water from flowing through the reserved port 218 and entering the interior of the housing 20. In some embodiments, when it is necessary to charge the energy storage component 74, unscrew the charging waterproof cap 28, insert one end of the charging cable into the charging interface 731 for charging. The power indicator 75 changes dynamically to prompt the user that charging is in progress. After charging is completed, pull out the charging cable and cover the charging waterproof cap 28. The charging waterproof cap 28 prevents water from entering at the charging interface 731. In some embodiments, the charging waterproof cap 28 is provided with a hook portion 281, and the hook portion 281 is embedded in the housing 20, so as to prevent the charging waterproof cap 28 from being lost due to detachment from the housing 20. In some embodiments, the charging waterproof cap 28 can be embedded in the reserved port 218 by interference fit and serve the purpose of waterproofing.

[0097] In some embodiments, when assembling the cleaning brush 100, the drive motor 30 and the reduction mechanism 40 are fixed to the fixed bracket 32 through the machine shell 43. The fixed bracket 32 is assembled with the fifth barrel portion 312 of the limit bracket 31 through its support ear portion 321. The drive motor 30, the reduction mechanism 40 and the fixed bracket 32 are integrally installed on the limit bracket 31, so that the internal structure of the cleaning brush 100 is more concise and stable.

[0098] In some embodiments, after assembling the first seal in the first edge groove 232 of the first inner wall block 23, the circuit board 73 and the light-emitting component 71 are assembled on the first housing 21. Then, the electrical circuits of the energy storage component 74, the drive motor 30 and the light-emitting component 71 are connected. After the electrical circuits are connected, the entire module of the drive motor 30 and the limit bracket 31 is assembled into the axial positioning groove 25 of the first housing 21, and the first positioning groove 313 of the limit bracket 31 is aligned with the first positioning block 242 in the axial positioning groove 25 of the first housing 21.

[0099] After the drive motor 30 and the limit bracket 31 are inserted into the first housing 21, the second housing 22 is closed. The axial positioning groove 25 of the second housing 22 is aligned with the outer peripheral edge of the limit bracket 31. The functions of the axial positioning groove 25 of the first housing 21 and the second housing 22, the first positioning groove 313 on the limit bracket 31, and the first positioning block 242 in the axial positioning groove 25 are to prevent the drive motor 30 and the limit bracket 31 from rotating inside the cleaning brush 100 after the drive motor 30 is started, to axially limit the drive motor 30, and at the same time to reduce the stress between the front cover 27 and the limit bracket 31.

[0100] In some embodiments, when the first housing 21 is docked with the second housing 22, the third cylindrical portion 222 is aligned with the positioning rod 212, and the positioning step portion 223 is aligned with the second positioning groove 214, so that the first housing 21 and the second housing 22 are guided during docking and prevent the first housing 21 and the second housing 22 from deforming under stress.

[0101] In some embodiments, after the second cylindrical portion 221 is aligned with the first cylindrical portion 211, the second cylindrical portion 221 and the first cylindrical portion 211 are locked by fasteners. The inner side of the front cover 27 is pasted with a waterproof fourth seal 45, and a third seal 273 is installed in the second edge groove 271 of the front cover 27. The front cover 27 is closed to the front ends of the first housing 21 and the second housing 22. Silicone is covered at the intersection of the first housing 21, the second housing 22 and the front cover 27 for sealing.

[0102] The second edge grooves 271 of the front cover 27 with the third seals 273 installed are respectively aligned with the second edge convex portions 216 of the first housing 21 and the third edge convex portions 224 of the second housing 22 for nested fitting. Then, fasteners are passed through the outer surface of the front cover 27 to the fourth cylindrical portion 311 of the limit bracket 31 to lock the front cover 27 to the limit bracket 31.

[0103] The above embodiments are only descriptions of the preferred embodiments of the present application, and do not limit the scope of the present application. Without departing from the design spirit of the present application, various deformations and improvements made by those of ordinary skill in the art to the technical solutions of the present application shall fall within the protection scope determined by the claims of the present application.

Claims

1. A cleaning brush, characterized in that, Comprising: A housing; A driving motor, installed inside the housing; And A speed reduction mechanism, installed on the housing; The input end of the speed reduction mechanism is connected to the output shaft of the driving motor, and the output end of the speed reduction mechanism is connected with an output joint; at least one set of reduction planetary gear sets are provided between the input end and the output end of the speed reduction mechanism.

2. The cleaning brush according to claim 1, wherein, The reduction planetary gear set includes a central gear, an internal gear and at least one intermediate planetary gear; the at least one intermediate planetary gear is arranged between the outer periphery of the central gear and the inner periphery of the internal gear; the at least one intermediate planetary gear is meshed with the central gear; the internal gear is meshed with the at least one intermediate planetary gear; the central gear is connected to the output shaft of the driving motor; the at least one intermediate planetary gear is connected to the output joint.

3. The cleaning brush according to claim 2, characterized in that, The speed reduction mechanism includes a casing; the reduction planetary gear set is arranged inside the casing; the internal gear is integrally provided with the inner peripheral wall of the casing.

4. The cleaning brush according to claim 1, wherein The housing includes a first housing body and a second housing body; partial edges of the first housing body are abutted against partial edges of the second housing body; a first inner wall block and a first support cylinder part are connected to the inner surface of the first housing body; the two first inner wall blocks are spaced apart; the first support cylinder part is arranged outside the two first inner wall blocks; a second inner wall block and a second support cylinder part are connected to the inner surface of the second housing body; the two second inner wall blocks are spaced apart; the second support cylinder part is arranged outside the two second inner wall blocks; partial edges of the first inner wall block are abutted against partial edges of the corresponding second inner wall block; one end of the first support cylinder part is arranged opposite to one end of the second support cylinder part.

5. The cleaning brush according to claim 4, characterized in that, A first edge groove is provided at the edge of one of the first inner wall block and the second inner wall block, and a first edge convex part is provided at the edge of the other; the first edge groove can accommodate the first edge convex part; a first seal is further accommodated in the first edge groove.

6. The cleaning brush according to claim 4, wherein A third support cylinder part is connected to the inner surface of one of the first housing body and the second housing body, and a positioning rod is connected to the other; the positioning rod is inserted into the third support cylinder part.

7. The cleaning brush according to claim 1, characterized in that, A second seal is sleeved on the outer periphery of the output joint; the second seal abuts against the outer surface of the housing; along the direction close to the outer surface of the housing, the outer wall of the second seal is arranged in an expanding transition manner.

8. The cleaning brush according to claim 1, characterized in that, The cleaning brush further includes a limiting bracket; the limiting bracket is connected between the driving motor and the housing; an axial positioning groove is provided on the inner surface of the housing; the internal space of the axial positioning groove surrounds the driving motor in the circumferential direction; the outer peripheral edge of the limiting bracket is accommodated in the axial positioning groove; a structural fit is formed between the housing and the limiting bracket to limit the relative rotation of the limiting bracket with respect to the housing.

9. The cleaning brush according to claim 1, characterized in that, It further includes an extension rod; the housing includes a first housing, a second housing and a tail cap; the first housing and the second housing are respectively provided with a front end and a tail end; the tail end is arranged farther from the output connector relative to the front end; the tail cap surrounds the outer peripheries of the tail ends of the first housing and the second housing; the tail ends of the first housing and the second housing jointly enclose a docking groove; one end of the extension rod is threadedly disposed in the docking groove.

10. The cleaning brush according to claim 1, wherein, A lighting member is further installed on the housing; the lighting member can generate illumination light that is directed to the outer peripheral side of the output connector.

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