Cleaning brush

Abstract

This invention provides a cleaning brush, comprising: a brush head, the brush head including an inner rotating scraper and an outer rotating scraper rotatably disposed, the outer rotating scraper being sleeved outside the inner rotating scraper and spaced apart from the inner rotating scraper; a handle, the handle being disposed on one side of the brush head and connected to the brush head; a wastewater tank, the wastewater tank being disposed on the brush head or the handle; and a water pump, the water pump being disposed on the brush head or the handle, the inlet of the water pump being connected to the end of the brush head near the surface to be cleaned, and the outlet of the water pump being connected to the wastewater tank, so as to draw wastewater from the surface to be cleaned into the wastewater tank, thereby solving the problem that wastewater still remains on the surface of the cleaning area during cleaning in existing electric cleaning brushes.

Description

Technical Field

[0001] This invention relates to the field of cleaning brush technology, and more specifically, to a cleaning brush. Background Technology

[0002] In daily life, people frequently perform cleaning tasks. Specialized cleaning solutions, along with brushes or scouring pads, are the most common cleaning methods. There are many types of dirt that need to be cleaned in the home, and these dirt can adhere to the surface of various materials and be distributed in many places on objects, making cleaning very time-consuming and laborious.

[0003] To save manpower, many people choose to use electric brushes for cleaning, such as for heavily soiled areas like gas stoves and range hoods, as well as larger areas like tiles, floors, and glass. The specific cleaning process is as follows: First, a cleaning solution is sprayed onto the surface to be cleaned. When the cleaning solution comes into contact with the stains, surfactants, emulsifiers, and penetrants penetrate the stains to break them down and remove the dirt. Then, an electric brush equipped with bristles, a scouring pad, or a sponge head is used to clean the surface. The operator doesn't need to apply too much pressure; the mechanical force of the electric brush combined with the cleaning solution works synergistically to complete the cleaning work quickly.

[0004] However, consumers may encounter some problems when using electric brushes:

[0005] (1) The cleaning solution and the electric brush are two separate items that need to be taken separately, which is inconvenient to use.

[0006] (2) The cleaning solution and dissolved stains on the surface to be cleaned splash everywhere as the brush head rotates, contaminating nearby items and the user's clothing.

[0007] (3) When the brush head rotates rapidly, it will deviate along the tangent of rotation, making it difficult to control and requiring the operator to exert force to control it, which deviates from the original intention of using an electric brush to save effort.

[0008] An existing technology includes a handheld electric cleaning brush with nested double brush heads that rotate in opposite directions. By setting two nested brush heads and controlling them to rotate in different directions, it solves the problem in existing technologies where cleaning fluid and dissolved stains splash everywhere when a single brush head rotates, even contaminating nearby items and the user's clothing. A cleaning agent channel is set on the central shaft, and an infusion pump delivers cleaning agent from the cleaning agent reservoir into the cleaning agent channel, and then delivers it from the front end of the central shaft to the inner brush head, cleaning in a mode of brushing and spraying cleaning fluid simultaneously.

[0009] However, the aforementioned handheld electric cleaning brushes still leave wastewater on the surface of the cleaning area during cleaning, requiring users to perform secondary cleaning with a cloth, which can easily lead to repetitive work and dirty hands. Summary of the Invention

[0010] The main objective of this invention is to provide a cleaning brush to solve the problem that in the prior art, electric cleaning brushes still leave wastewater on the surface of the cleaning area during cleaning.

[0011] To achieve the above objectives, the present invention provides a cleaning brush, comprising: a brush head, the brush head including an inner rotating scraper and an outer rotating scraper rotatably disposed, the outer rotating scraper being sleeved outside the inner rotating scraper and spaced apart from the inner rotating scraper; a handle, the handle being disposed on one side of the brush head and connected to the brush head; a wastewater tank, the wastewater tank being disposed on the brush head or the handle; and a water pump, the water pump being disposed on the brush head or the handle, the inlet of the water pump being connected to the end of the brush head near the surface to be cleaned, and the outlet of the water pump being connected to the wastewater tank, so as to draw wastewater from the surface to be cleaned into the wastewater tank.

[0012] Furthermore, the brush head includes: a head housing connected to a handle, with both an inner and outer rotating scraper rotatably disposed at one end of the head housing near the surface to be cleaned; and a motor including a stator and a rotor, the motor being installed inside the head housing, the rotor being connected to the inner rotating scraper to drive the inner rotating scraper to rotate synchronously with the rotor.

[0013] Furthermore, the rotation direction of the inner rotating scraper is opposite to that of the outer rotating scraper; the brush head includes a reverse transmission assembly, through which the rotor is connected to the outer rotating scraper to drive the outer rotating scraper to rotate in the opposite direction relative to the rotor.

[0014] Furthermore, the water pump is installed inside the head housing and located on the side of the motor away from the inner rotating scraper; the motor is an external rotor motor, with the rotor sleeved outside the stator, and the stator is provided with a first clearance through hole, the two ends of the first clearance through hole being connected to the inlet of the water pump and the end of the head housing near the surface to be cleaned, respectively, to allow sewage to pass through.

[0015] Furthermore, the head housing includes a first housing, a second housing, and a third housing arranged sequentially. The first housing is fixedly connected to the second housing and the stator, and the third housing is rotatably connected to the second housing. The outer rotating scraper is fixedly connected to the third housing so as to rotate synchronously with the third housing.

[0016] Furthermore, the brush head includes: a first motor mounting bracket, which is disposed inside the head housing and located between the first housing and the second housing, and is fixedly connected to the first housing, the second housing and the stator; and a second motor mounting bracket, which is disposed on the side of the first motor mounting bracket near the inner rotating scraper, a portion of the second motor mounting bracket is located inside the second housing and another portion of the second motor mounting bracket is located inside the third housing, and is fixedly connected to the rotor and the inner rotating scraper, and the rotor drives the inner rotating scraper to rotate through the second motor mounting bracket.

[0017] Furthermore, the cleaning brush includes a water pipe, a portion of which is located inside the brush head and another portion inside the handle. The first end of the water pipe is connected to the outlet of the water pump, and the second end of the water pipe is connected to the wastewater tank. The inlet of the water pump is inserted into the middle through hole of the first motor mounting bracket and communicates with the first clearance through hole. The brush head includes a water pump sealing ring disposed between the inlet of the water pump, the motor, and the first motor mounting bracket.

[0018] Furthermore, the brush head includes: a sealing gasket disposed between the second housing and the first motor mounting bracket; and a dynamic sealing ring disposed between the second housing and the second motor mounting bracket.

[0019] Furthermore, the brush head includes a bearing and a bearing fixing plate. The bearing fixing plate is disposed inside and connected to the third housing. The outer ring of the bearing is fixedly connected to both the bearing fixing plate and the third housing. The inner ring of the bearing is fixedly connected to both the second motor fixing bracket and the inner rotating scraper.

[0020] Furthermore, the reverse transmission assembly includes: an internal gear, which is sleeved outside the second motor mounting bracket and fixedly connected to the second motor mounting bracket; an external gear, which is disposed inside the third housing and fixedly connected to the third housing, and is sleeved outside the internal gear; and an intermediate gear, which is rotatably mounted on the second housing and located on the lower side of the second housing, and is disposed between the internal gear and the external gear and meshes with both the internal gear and the external gear.

[0021] Furthermore, the reverse transmission assembly also includes a gear limiting plate, which is disposed inside the third housing and fixedly connected to the third housing. The gear limiting plate is located on the side of the intermediate gear away from the second housing to support the intermediate gear.

[0022] Furthermore, the brush head includes a splash guard, which is installed on the side of the head housing near the surface to be cleaned. The splash guard includes a guard space and an opening communicating with the guard space. The opening is located on the side of the guard space near the surface to be cleaned. Both the inner and outer rotating scrapers are located within the guard space.

[0023] Furthermore, the splash guard is made of a flexible material; and / or the side of the splash guard closest to the surface to be cleaned has multiple air inlets.

[0024] Furthermore, the handle includes: a handle housing connected to the brush head; a battery with a battery mounting slot inside the handle housing; a PCB board and a PCB board mounting bracket, with the PCB board mounted on the PCB board mounting bracket and the PCB board mounting bracket installed in the PCB mounting slot; the PCB board is connected to the battery, water pump, and motor; and a power switch movably mounted on the handle housing and connected to the PCB board to control the working state of the cleaning brush by driving the power switch.

[0025] Furthermore, the handle includes a first conductive component and a second conductive component. The PCB board is connected to both the first and second conductive components. Both the first and second conductive components are disposed in the battery mounting slot and are in contact with the positive and negative terminals of the battery, respectively.

[0026] Applying the technical solution of this invention, the cleaning brush of this invention includes: a brush head, the brush head including an inner rotating scraper and an outer rotating scraper rotatably disposed, the outer rotating scraper being sleeved outside the inner rotating scraper and spaced apart from the inner rotating scraper; a handle, the handle being disposed on one side of the brush head and connected to the brush head; a wastewater tank, the wastewater tank being disposed on the brush head or the handle; and a water pump, the water pump being disposed on the brush head or the handle, the inlet of the water pump being connected to the end of the brush head near the surface to be cleaned, and the outlet of the water pump being connected to the wastewater tank, so as to draw wastewater from the surface to be cleaned into the wastewater tank. Thus, the cleaning brush of this invention can both wash and wipe the surface to be cleaned using the inner rotating scraper, and also draw wastewater from the surface to be cleaned into the wastewater tank using the water pump. This achieves an integrated design of washing, wiping, and wastewater recovery functions, solving the problem that wastewater still remains on the surface of the cleaning area during cleaning with existing electric cleaning brushes, preventing the splashing of wastewater generated during cleaning, improving the cleaning effect of the cleaning brush, and avoiding the need for secondary cleaning by the user. Attached Figure Description

[0027] The accompanying drawings, which form part of this application, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention. In the drawings:

[0028] Figure 1 A cross-sectional view of an embodiment of the cleaning brush according to the present invention is shown;

[0029] Figure 2 It shows Figure 1 An exploded view of the cleaning brush shown;

[0030] Figure 3 It shows Figure 1 A cross-sectional view of the cleaning brush shown;

[0031] Figure 4 It shows Figure 1 The front view of the cleaning brush shown;

[0032] Figure 5 It shows Figure 1 Rear view of the cleaning brush shown;

[0033] Figure 6 It shows Figure 1 Left view of the cleaning brush shown;

[0034] Figure 7 It shows Figure 1 The right view of the cleaning brush shown;

[0035] Figure 8 It shows Figure 1 A top view of the cleaning brush shown;

[0036] Figure 9 It shows Figure 1 The cleaning brush shown is viewed from below.

[0037] The above figures include the following reference numerals:

[0038] 1. Wastewater tank; 2. Handle; 3. Battery; 4. First conductive component; 5. Second conductive component; 6. PCB board mounting bracket; 7. PCB board; 8. Switch; 9. First housing; 10. Water pipe; 11. Water pump; 12. First motor mounting bracket; 13. Sealing gasket; 14. Water pump sealing ring; 15. Motor; 16. Second motor mounting bracket; 17. Dynamic sealing ring; 18. Bearing; 19. Second housing; 20. Gear limiting plate; 21. Third housing; 22. Outer rotating scraper; 23. Reverse transmission assembly; 24. Inner rotating scraper; 25. Splash shield; 26. Brush head; 27. Head housing; 28. Handle housing; 29. ​​First clearance through hole; 30. First housing section; 31. Second housing section; 32. Air inlet; 33. Intermediate gear; 34. Internal gear; 35. External gear. Detailed Implementation

[0039] It should be noted that, unless otherwise specified, the embodiments and features described in this application can be combined with each other. The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] like Figures 1 to 9As shown, the present invention provides a cleaning brush, which includes: a brush head 26, the brush head 26 including an inner rotating scraper 24 and an outer rotating scraper 22 rotatably disposed, the outer rotating scraper 22 being sleeved outside the inner rotating scraper 24 and spaced apart from the inner rotating scraper 24; a handle 2, the handle 2 being disposed on one side of the brush head 26 and connected to the brush head 26; a wastewater tank 1, the wastewater tank 1 being disposed on the brush head 26 or the handle 2; and a water pump 11, the water pump 11 being disposed on the brush head 26 or the handle 2, the inlet of the water pump 11 being connected to the end of the brush head 26 near the surface to be cleaned, and the outlet of the water pump 11 being connected to the wastewater tank 1, so as to draw wastewater from the surface to be cleaned into the wastewater tank 1.

[0041] In this way, the cleaning brush of the present invention can not only scrub the surface to be cleaned by the inner rotating scraper 24, but also wipe the surface to be cleaned by the outer rotating scraper 22. It can also suck the sewage on the surface to be cleaned into the sewage tank 1 by the water pump 11. It realizes the integrated setting of the cleaning brush's washing function, wiping function and sewage recycling function, solves the problem that sewage still remains on the surface of the cleaning area when the electric cleaning brush in the prior art is cleaning, prevents the problem of sewage splashing generated by the cleaning brush during cleaning, improves the cleaning effect of the cleaning brush, and avoids the problem of users needing to perform secondary cleaning.

[0042] like Figure 1 and Figure 2 As shown, the brush head 26 includes: a head housing 27, which is connected to the handle 2, and an inner rotating scraper 24 and an outer rotating scraper 22, which are rotatably disposed at one end of the head housing 27 near the surface to be cleaned; and a motor 15, which includes a stator and a rotor, and is installed inside the head housing 27. The rotor is connected to the inner rotating scraper 24 to drive the inner rotating scraper 24 to rotate synchronously with the rotor.

[0043] like Figure 1 and Figure 2 As shown, the rotation direction of the inner rotating scraper 24 is opposite to that of the outer rotating scraper 22; the brush head 26 includes a reverse transmission assembly 23, and the rotor is connected to the outer rotating scraper 22 through the reverse transmission assembly 23 to drive the outer rotating scraper 22 to rotate in the opposite direction relative to the rotor.

[0044] like Figure 1 and Figure 2 As shown, the water pump 11 is installed inside the head housing 27 and located on the side of the motor 15 away from the inner rotating scraper 24; the motor 15 is an external rotor motor, with the rotor sleeved outside the stator. The stator is provided with a first clearance through hole 29, and the two ends of the first clearance through hole 29 are respectively connected to the inlet of the water pump 11 and the end of the head housing 27 near the surface to be cleaned, so that sewage can pass through.

[0045] Specifically, the second motor mounting bracket 16 is provided with a second clearance through hole that communicates with the first clearance through hole 29 for allowing sewage to pass through, and the inner rotating scraper 24 is provided with a third clearance through hole that communicates with the second clearance through hole for allowing sewage to pass through.

[0046] like Figures 1 to 9 As shown, the head housing 27 includes a first housing 9, a second housing 19 and a third housing 21 arranged in sequence. The first housing 9 is fixedly connected to the second housing 19 and the stator. The third housing 21 is rotatably connected to the second housing 19. The outer rotating scraper 22 is fixedly connected to the third housing 21 so as to rotate synchronously with the third housing 21.

[0047] Specifically, the outer rotating scraper 22 has multiple insertion posts on the side away from the surface to be cleaned, and the third housing 21 has multiple insertion slots on the side near the outer rotating scraper 22. The multiple insertion posts and the multiple insertion slots are inserted into each other in a one-to-one manner, and each insertion post and the corresponding insertion slot are interference-fitted.

[0048] like Figure 1 and Figure 2 As shown, the brush head 26 includes: a first motor mounting bracket 12, which is disposed inside the head housing 27 and located between the first housing 9 and the second housing 19, and is fixedly connected to the first housing 9, the second housing 19 and the stator; and a second motor mounting bracket 16, which is disposed on the side of the first motor mounting bracket 12 near the inner rotating scraper 24, with a part of the second motor mounting bracket 16 located inside the second housing 19 and another part of the second motor mounting bracket 16 located inside the third housing 21, and is fixedly connected to the rotor and the inner rotating scraper 24, with the rotor driving the inner rotating scraper 24 to rotate through the second motor mounting bracket 16.

[0049] In the brush head 26 of the cleaning brush of the present invention, the first housing 9 and the first motor mounting bracket 12 are detachably connected by a plurality of first fasteners. The first housing 9 is provided with a plurality of first through holes for the threaded ends of the plurality of first fasteners to pass through one by one. The first motor mounting bracket 12 is provided with a plurality of first threaded holes for the threaded ends of the plurality of first fasteners to be threadedly connected one by one.

[0050] In the brush head 26 of the cleaning brush of the present invention, a first annular groove is provided on one end of the first motor fixing bracket 12 near the second housing 19, and a first annular inner flange is provided on one end of the second housing 19 near the first motor fixing bracket 12. The first annular groove and the first annular inner flange are interlocked.

[0051] In the brush head 26 of the cleaning brush of the present invention, a second annular groove is provided on the outer peripheral surface of the second housing 19, and a second annular inner flange is provided on the inner wall surface of the third housing 21. The second annular groove and the second annular inner flange are rotatably inserted into each other so that the second housing 19 and the third housing 21 can be rotatably arranged relative to each other.

[0052] like Figure 2 As shown, the first housing 9 is provided with a protrusion on the side of the water pump 11 away from the motor 15 to press the water pump 11.

[0053] like Figure 1 and Figure 2 As shown, the cleaning brush includes a water pipe 10, a portion of which is located inside the brush head 26, and another portion of which is located inside the handle 2. The first end of the water pipe 10 is connected to the outlet of the water pump 11, and the second end of the water pipe 10 is connected to the wastewater tank 1. The inlet of the water pump 11 is inserted into the middle through hole of the first motor mounting bracket 12 and communicates with the first clearance through hole 29. The brush head 26 includes a water pump sealing ring 14 disposed between the inlet of the water pump 11, the motor 15, and the first motor mounting bracket 12.

[0054] like Figure 1 and Figure 2 As shown, the brush head 26 includes: a sealing gasket 13 disposed between the second housing 19 and the first motor mounting bracket 12; and a dynamic sealing ring 17 disposed between the second housing 19 and the second motor mounting bracket 16.

[0055] like Figure 1 and Figure 2 As shown, the brush head 26 includes a bearing 18 and a bearing fixing plate. The bearing fixing plate is disposed inside and connected to the third housing 21. The outer ring of the bearing 18 is fixedly connected to both the bearing fixing plate and the third housing 21. The inner ring of the bearing 18 is fixedly connected to both the second motor fixing bracket 16 and the inner rotating scraper 24.

[0056] In the brush head 26 of the cleaning brush of the present invention, the first housing 9 and the first motor mounting bracket 12 are detachably connected by a plurality of first fasteners. The first housing 9 is provided with a plurality of first through holes for the threaded ends of the plurality of first fasteners to pass through one by one. The first motor mounting bracket 12 is provided with a plurality of first threaded holes for the threaded ends of the plurality of first fasteners to be threadedly connected one by one.

[0057] In the brush head 26 of the cleaning brush of the present invention, a first annular groove is provided on one end of the first motor fixing bracket 12 near the second housing 19, and a first annular inner flange is provided on one end of the second housing 19 near the first motor fixing bracket 12. The first annular groove and the first annular inner flange are interlocked.

[0058] In the brush head 26 of the cleaning brush of the present invention, a second annular groove is provided on the outer peripheral surface of the second housing 19, and a second annular inner flange is provided on the inner wall surface of the third housing 21. The second annular groove and the second annular inner flange are rotatably inserted into each other so that the second housing 19 and the third housing 21 can be rotatably arranged relative to each other.

[0059] like Figure 2 As shown, the first housing 9 is provided with a protrusion on the side of the water pump 11 away from the motor 15 to press the water pump 11.

[0060] Specifically, the outer rotating scraper 22 has multiple insertion posts on the side away from the surface to be cleaned, and the third housing 21 has multiple insertion slots on the side near the outer rotating scraper 22. The multiple insertion posts and the multiple insertion slots are inserted into each other in a one-to-one manner, and each insertion post and the corresponding insertion slot are interference-fitted.

[0061] like Figures 1 to 3 As shown, the reverse transmission assembly 23 includes: an internal gear 34, which is sleeved on the second motor mounting bracket 16 and fixedly connected to the second motor mounting bracket 16; an external gear 35, which is disposed inside the third housing 21 and fixedly connected to the third housing 21, and is sleeved on the outside of the internal gear 34; and an intermediate gear 33, which is rotatably mounted on the second housing 19 and located on the lower side of the second housing 19, and is disposed between the internal gear 34 and the external gear 35 and meshes with both the internal gear 34 and the external gear 35.

[0062] Specifically, a fixed shaft for inserting into the intermediate gear 33 is provided on the lower side of the second housing 19.

[0063] Preferably, there are multiple intermediate gears 33, which are spaced apart around the center line of the rotor. There are also multiple fixed shafts, which are arranged in a one-to-one correspondence with the multiple intermediate gears 33.

[0064] like Figure 1 and Figure 2 As shown, the reverse transmission assembly 23 also includes a gear limiting plate 20, which is disposed inside the third housing 21 and fixedly connected to the third housing 21. The gear limiting plate 20 is located on the side of the intermediate gear 33 away from the second housing 19 to support the intermediate gear 33.

[0065] Specifically, the third housing 21 and the gear limiting plate 20 are detachably connected by a plurality of second fasteners. The third housing 21 is provided with a plurality of second through holes through which the threaded ends of the plurality of second fasteners pass in a one-to-one correspondence. The gear limiting plate 20 is provided with a plurality of second threaded holes through which the threaded ends of the plurality of second fasteners are threadedly connected in a one-to-one correspondence.

[0066] Optionally, the bearing fixing plate and the gear limiting plate 20 can be the same component or different components.

[0067] like Figure 1 and Figure 2 As shown, the brush head 26 includes a splash guard 25, which is installed on the side of the head housing 27 near the surface to be cleaned. The splash guard 25 includes a guard space and an opening communicating with the guard space. The opening is located on the side of the guard space near the surface to be cleaned. The inner rotating scraper 24 and the outer rotating scraper 22 are both located within the guard space.

[0068] Specifically, the splash guard 25 is installed on the side of the third housing 21 near the surface to be cleaned.

[0069] like Figure 1 and Figure 2 As shown, the splash guard 25 is made of a flexible material; and / or the splash guard 25 has multiple air inlets 32 on the side near the surface to be cleaned.

[0070] Preferably, the splash guard 25 is made of a flexible material so that it can be extended and retracted when subjected to force, thereby allowing it to fit tightly against the surface to be cleaned, further preventing the splashing of sewage from the surface to be cleaned; and / or the side of the splash guard 25 closest to the surface to be cleaned has multiple air inlets to allow sewage to enter the splash guard 25, improving the collection and removal effect of sewage.

[0071] like Figure 1 As shown, the wastewater recycling path A of the cleaning brush of the present invention is as follows: wastewater is sucked in by the water pump 11 from the air inlet 32 ​​into the anti-splash cover 25, and then pushed by the outer rotating scraper 22 to the inner rotating scraper 24. Then, under the push of the inner rotating scraper 24, it reaches the first clearance through hole 29, and then reaches the water pipe 10 through the inside of the water pump 11, and finally reaches the wastewater tank 1.

[0072] like Figure 1 and Figure 2 As shown, the handle 2 includes: a handle housing 28, which is connected to the brush head 26; a battery 3, in which a battery mounting slot is provided inside the handle housing 28 and the battery 3 is installed; a PCB board 7 and a PCB board mounting bracket 6, in which a PCB mounting slot is provided inside the handle 2, the PCB board 7 is mounted on the PCB board mounting bracket 6, and the PCB board mounting bracket 6 is installed in the PCB mounting slot. The PCB board 7 is connected to the battery 3, the water pump 11, and the motor 15; and a switch 8, which is movably disposed on the handle housing 28 and connected to the PCB board 7, so as to control the working state of the cleaning brush by driving the switch 8 to move.

[0073] Specifically, the handle housing 28 includes a first housing segment 30 and a second housing segment 31. The PCB board 7 and the PCB board mounting bracket 6 are both located inside the first housing segment 30, and the battery 3 is located inside the second housing segment 31. The first housing segment 30 and the second housing segment 31 are detachably connected to facilitate the replacement of the battery 3.

[0074] like Figure 1 and Figure 2 As shown, the handle 2 includes a first conductive component 4 and a second conductive component 5. The PCB board 7 is connected to both the first conductive component 4 and the second conductive component 5. The first conductive component 4 and the second conductive component 5 are both disposed in the battery mounting slot and are in contact with the positive and negative terminals of the battery 3, respectively.

[0075] Specifically, the end of the first shell section 30 away from the second shell section 31 is integrally formed with the head shell 27. The sewage tank 1 is installed at the end of the second shell section 31 away from the first shell section 30. Both the first shell section 30 and the second shell section 31 are provided with water pipe mounting grooves for installing water pipes 10. The first end of the water pipe 10 passes through the first shell section 30 and extends into the head shell 27 to connect with the inlet of the water pump 11. The second end of the water pipe 10 passes through the second shell section 31 and connects with the sewage tank 1.

[0076] As can be seen from the above description, the embodiments of the present invention achieve the following technical effects:

[0077] The cleaning brush of the present invention includes: a brush head 26, the brush head 26 including an inner rotating scraper 24 and an outer rotating scraper 22 rotatably disposed, the outer rotating scraper 22 being sleeved outside the inner rotating scraper 24 and spaced apart from the inner rotating scraper 24; a handle 2, the handle 2 being disposed on one side of the brush head 26 and connected to the brush head 26; a wastewater tank 1, the wastewater tank 1 being disposed on the brush head 26 or the handle 2; and a water pump 11, the water pump 11 being disposed on the brush head 26 or the handle 2, the inlet of the water pump 11 being connected to the end of the brush head 26 near the surface to be cleaned, and the outlet of the water pump 11 being connected to the wastewater tank 1, so as to draw wastewater from the surface to be cleaned into the wastewater tank 1. In this way, the cleaning brush of the present invention can not only scrub the surface to be cleaned by the inner rotating scraper 24, but also wipe the surface to be cleaned by the outer rotating scraper 22. It can also suck the sewage on the surface to be cleaned into the sewage tank 1 by the water pump 11. It realizes the integrated setting of the cleaning brush's washing function, wiping function and sewage recycling function, solves the problem that sewage still remains on the surface of the cleaning area when the electric cleaning brush in the prior art is cleaning, prevents the problem of sewage splashing generated by the cleaning brush during cleaning, improves the cleaning effect of the cleaning brush, and avoids the problem of users needing to perform secondary cleaning.

[0078] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0079] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0080] In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0081] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0082] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0083] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A cleaning brush characterized by, The cleaning brush comprises: a brush head (26) comprising an inner rotating scraper (24) and an outer rotating scraper (22) rotatably arranged, the outer rotating scraper (22) being sleeved outside the inner rotating scraper (24) and being arranged in a spaced manner with the inner rotating scraper (24); a handle (2) arranged on one side of the brush head (26) and connected with the brush head (26); a sewage tank (1) arranged on the brush head (26) or the handle (2); a water pump (11) arranged on the brush head (26) or the handle (2), an inlet of the water pump (11) being communicated with one end of the brush head (26) close to a surface to be cleaned, and an outlet of the water pump (11) being communicated with the sewage tank (1) to suck sewage of the surface to be cleaned into the sewage tank (1); a water pipe (10), a part of the water pipe (10) being located in the brush head (26), and another part of the water pipe (10) being located in the handle (2), a first end of the water pipe (10) being connected with the outlet of the water pump (11), and a second end of the water pipe (10) being connected with the sewage tank (1); the brush head (26) comprises a motor (15) comprising a stator and a rotor, the rotor being connected with the inner rotating scraper (24) to drive the inner rotating scraper (24) to rotate synchronously with the rotor; rotating directions of the inner rotating scraper (24) and the outer rotating scraper (22) are opposite; the brush head (26) comprises a reverse transmission assembly (23), the rotor being connected with the outer rotating scraper (22) through the reverse transmission assembly (23) to drive the outer rotating scraper (22) to rotate reversely relative to the rotor; the brush head (26) comprises a head shell (27) comprising a first shell (9), a second shell (19) and a third shell (21) arranged in sequence, the first shell (9) being fixedly connected with the second shell (19) and the stator, the third shell (21) being relatively rotatably connected with the second shell (19), and the outer rotating scraper (22) being fixedly connected with the third shell (21) to rotate synchronously with the third shell (21); the reverse transmission assembly (23) comprises an inner gear (34), an outer gear (35) and an intermediate gear (33), the outer gear (35) being arranged in the third shell (21) and fixedly connected with the third shell (21), the outer gear (35) being sleeved outside the inner gear (34); the intermediate gear (33) is rotatably mounted on the lower side of the second shell (19) and arranged between the inner gear (34) and the outer gear (35) and engaged with the inner gear (34) and the outer gear (35). The reverse transmission assembly (23) further comprises a gear limiting plate (20) arranged in the third housing (21) and fixedly connected with the third housing (21), the gear limiting plate (20) is located on the side of the intermediate gear (33) away from the second housing (19) to support the intermediate gear (33); The intermediate gear (33) is provided with a fixed shaft, and the fixed shaft is connected with the second housing (19), the number of the intermediate gears (33) is multiple, and the multiple intermediate gears (33) are arranged at intervals around the center line of the rotor, the number of the fixed shafts is multiple, and the multiple fixed shafts are arranged in one-to-one correspondence with the multiple intermediate gears (33).

2. The cleaning brush according to claim 1, wherein The head housing (27) is connected with the handle (2), and the inner rotary scraping strip (24) and the outer rotary scraping strip (22) are rotatably arranged at one end of the head housing (27) close to the surface to be cleaned; The motor (15) is installed in the head housing (27).

3. The cleaning brush according to claim 1, wherein The water pump (11) is installed in the head housing (27) and located at the side of the motor (15) away from the inner rotary scraping strip (24); The motor (15) is an outer rotor motor, the rotor is sleeved outside the stator, the stator is provided with a first avoiding through hole (29), and the two ends of the first avoiding through hole (29) are respectively communicated with the inlet of the water pump (11) and one end of the head housing (27) close to the surface to be cleaned, so that sewage can pass through.

4. The cleaning brush of claim 3, wherein, The brush head (26) comprises: A first motor fixing frame (12) is arranged in the head housing (27) and located between the first housing (9) and the second housing (19), and the first motor fixing frame (12) is fixedly connected with the first housing (9), the second housing (19) and the stator; A second motor fixing frame (16) is arranged at the side of the first motor fixing frame (12) close to the inner rotary scraping strip (24), a part of the second motor fixing frame (16) is located in the second housing (19), another part of the second motor fixing frame (16) is located in the third housing (21), the second motor fixing frame (16) is fixedly connected with the rotor and the inner rotary scraping strip (24), and the rotor drives the inner rotary scraping strip (24) to rotate through the second motor fixing frame (16).

5. The cleaning brush according to claim 4, wherein The inlet of the water pump (11) is inserted into the middle through hole of the first motor fixing frame (12) and communicated with the first avoiding through hole (29), and the brush head (26) comprises a water pump sealing ring (14) arranged between the inlet of the water pump (11), the motor (15) and the first motor fixing frame (12).

6. The cleaning brush of claim 4, wherein, The brush head (26) comprises: A sealing gasket (13) is arranged between the second housing (19) and the first motor fixing frame (12); A dynamic sealing ring (17) is arranged between the second housing (19) and the second motor fixing frame (16).

7. The cleaning brush of claim 4, wherein, The brush head (26) comprises a bearing (18) and a bearing fixing plate arranged in and connected with the third housing (21), the outer ring of the bearing (18) is fixedly connected with the bearing fixing plate and the third housing (21), and the inner ring of the bearing (18) is fixedly connected with the second motor fixing frame (16) and the inner rotating scraping strip (24).

8. The cleaning brush of claim 4, wherein, The inner gear (34) is sleeved on the second motor fixing frame (16) and fixedly connected with the second motor fixing frame (16).

9. The cleaning brush of claim 2, wherein, The brush head (26) comprises a splash-proof cover (25) mounted on the side of the head housing (27) close to the surface to be cleaned, the splash-proof cover (25) comprises a cover body space and an opening part in communication with the cover body space, the opening part is located on the side of the cover body space close to the surface to be cleaned, and the inner rotating scraping strip (24) and the outer rotating scraping strip (22) are located in the cover body space.

10. The cleaning brush according to claim 9, wherein The splash-proof cover (25) is made of a flexible material; and / or A plurality of air inlet holes (32) are formed on the side of the splash-proof cover (25) close to the surface to be cleaned.

11. The cleaning brush according to any one of claims 2 to 10, wherein, The handle (2) comprises: A handle housing (28) connected with the brush head (26); A battery (3), a battery mounting groove is arranged in the handle housing (28), and the battery (3) is mounted in the battery mounting groove; A PCB board (7) and a PCB board fixing frame (6), a PCB mounting groove is arranged in the handle (2), the PCB board (7) is arranged on the PCB board fixing frame (6), the PCB board fixing frame (6) is mounted in the PCB mounting groove, and the PCB board (7) is connected with the battery (3), the water pump (11) and the motor (15); A key (8) movably arranged on the handle housing (28) and connected with the PCB board (7) to control the working state of the cleaning brush by driving the key (8) to move.

12. The cleaning brush of claim 11, wherein, The handle (2) comprises a first conductive part (4) and a second conductive part (5), the PCB board (7) is connected with the first conductive part (4) and the second conductive part (5), and the first conductive part (4) and the second conductive part (5) are arranged in the battery mounting groove and respectively contact the positive electrode and the negative electrode of the battery (3).

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