Electric cleaning brush

Abstract

The utility model discloses an electric cleaning brush, which belongs to the technical field of electric tools and comprises a casing, a motor, a transmission component and a cleaning disc, the motor and the transmission component are arranged inside the casing, the cleaning disc is arranged outside the casing, the motor drives the cleaning disc to rotate through the transmission component, and the cleaning disc comprises an inner disc body and an outer disc body. The outer disc body surrounds the periphery of the inner disc body, first hair bundles are arranged on the lower surface of the inner disc body, second hair bundles are arranged on the lower surface of the outer disc body, a plurality of third hair bundles which are evenly distributed in the circumferential direction are arranged on the outer circumferential face of the outer disc body, and the third hair bundles extend outwards from the outer circumferential face of the outer disc body to the direction away from the center of the cleaning disc. And the third hair bundles are arranged on the peripheral surface of the outer disc body, so that the scraping and brushing surface of the cleaning disc is increased, and the scraping and brushing efficiency and the scraping and brushing effect of the cleaning disc are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of electric tools, in particular to an electric cleaning brush. Background Art

[0002] With the improvement of industrialization level, the types and functions of electric tools are becoming more and more diversified. Among them, electric cleaning brushes are a common electric tool. Existing electric cleaning brushes generally include a housing, a motor and a brush head. The motor drives the brush head to rotate, and the rotating brush head scrapes the object or surface to be cleaned. Electric cleaning brushes can be used not only for cleaning vehicles, but also for cleaning kitchen items, floors, walls, etc., which greatly reduces the cleaning difficulty for users. In existing electric cleaning brushes, the brush head generally only has bristles on the bottom surface, that is, the brush head has only one scraping surface. When the user wants to clean the wall at the corner while cleaning the floor, he can only adjust the direction of the electric cleaning brush and then clean the wall, which is not conducive to improving the scraping efficiency. Utility Model Content

[0003] In order to solve the shortcomings and deficiencies in the above-mentioned prior art, the utility model provides an electric cleaning brush, wherein a third bristle bundle is arranged on the outer peripheral surface of the outer disc body to increase the scraping surface of the cleaning disc and improve the scraping efficiency and scraping effect of the cleaning disc.

[0004] In order to achieve the above technical objectives, the utility model provides an electric cleaning brush, including a casing, a motor, a transmission assembly and a cleaning disc, the motor and the transmission assembly are arranged inside the casing, and the cleaning disc is arranged outside the casing, the motor drives the cleaning disc to rotate through the transmission assembly, and the cleaning disc includes an inner disc body and an outer disc body, the outer disc body surrounds the outer circumference of the inner disc body, the lower surface of the inner disc body is provided with a first bristle bundle, the lower surface of the outer disc body is provided with a second bristle bundle, and the outer circumferential surface of the outer disc body is provided with multiple clusters of third bristle bundles evenly distributed along the circumferential direction, and the third bristle bundles extend outward from the outer circumferential surface of the outer disc body in a direction away from the center of the cleaning disc.

[0005] Preferably, the third hair bundles are arranged in a circle along the outer circumference of the outer disc body.

[0006] Preferably, the third hair bundles extend outwardly along the radial direction of the outer disk body.

[0007] Preferably, the length L of the third hair bundle is 10 mm to 40 mm.

[0008] Preferably, the first hair bundle and the second hair bundle have different hardness.

[0009] Preferably, the motor drives the inner disk and the outer disk to rotate in opposite directions through a transmission assembly, the transmission assembly includes an inner shaft and an outer shaft, the outer shaft is sleeved on the outside of the inner shaft, the outer disk is connected to the lower end of the outer shaft, and the inner disk is connected to the lower end of the inner shaft.

[0010] Preferably, the housing is provided with a latch for locking the outer shaft and a spring acting on the latch, the latch for locking the outer shaft is compressed to cause the spring to undergo elastic deformation, and the spring that restores the deformation drives the released latch to separate from the outer shaft.

[0011] Preferably, the outer peripheral surface of the outer shaft is provided with a plurality of slots which are distributed at intervals along the circumferential direction and for the insertion of the pins.

[0012] Preferably, the lower end of the outer shaft extends out of the casing and is provided with an external thread, a connecting hole extending axially is provided at the center of the outer disk body, an internal thread is provided on the hole wall of the connecting hole, and the outer disk body is connected to the lower end of the outer shaft through the cooperation of the internal thread and the external thread; and / or, the lower end of the inner shaft extends out of the casing and is provided with a clamping joint, a clamping hole is provided at the center of the inner disk body, and the inner disk body is connected to the lower end of the inner shaft through the cooperation of the clamping hole and the clamping joint.

[0013] Preferably, the outer circumferential surface of the inner disk is provided with a plurality of gripping grooves which are spaced apart and concave toward the center of the inner disk; and / or, the outer disk is provided with a concave cavity which is concave upward from the lower surface and is used to accommodate the inner disk.

[0014] After adopting the above technical solution, the utility model has the following advantages:

[0015] 1. The electric cleaning brush provided by the utility model has a cleaning disc with an inner and outer double disc structure, and the motor can drive the two discs to rotate in the same direction or in the opposite direction through a transmission assembly. A first hair bundle is arranged on the lower surface of the inner disc, and a second hair bundle is arranged on the lower surface of the outer disc. The first hair bundle and the second hair bundle can form a scraping surface of the cleaning disc in combination. A third hair bundle is arranged on the outer peripheral surface of the outer disc, so that the outer peripheral surface of the outer disc constitutes another scraping surface. The distribution of the hair bundles on the cleaning disc is reasonably arranged so that the cleaning disc has two scraping surfaces, and the two scraping surfaces can be used for scraping or for scraping at the same time. In particular, when using an electric cleaning brush to clean the floor, the first hair bundle and the second hair bundle can be used for scraping the floor, and the third hair bundle can be used for scraping the wall near the corner. Reasonably improving the structure of the cleaning brush can improve the efficiency of users using the machine body to scrape and remove dirt, which is conducive to improving the user experience.

[0016] 2. The third hair bundle is arranged in a circle along the outer circumference of the outer disc body, so that the third hair bundle covers the entire outer circumference of the outer disc body in the circumferential direction of the outer disc body, so that the third hair bundle can effectively scrape the object or surface to be cleaned no matter how the cleaning disc rotates.

[0017] 3. The third bristle bundle extends radially outwardly along the cleaning disc. The extension direction of the third bristle bundle is reasonably set to increase the scraping force of the third bristle bundle on the object to be cleaned or the surface to be cleaned, thereby improving the cleaning effect.

[0018] 4. Reasonably set the length L of the third bristle bundle to ensure the scraping force of the third bristle bundle and the service life of the third bristle bundle. If the length of the third bristle bundle is less than 10mm, the service life of the third bristle bundle cannot be guaranteed due to the wear of the scraping brush. If the length of the third bristle bundle is greater than 40mm, the end of the third bristle bundle is easily deformed by force, which is not conducive to ensuring the scraping force of the third bristle bundle on the object or surface to be cleaned, and thus is not conducive to ensuring the cleaning effect.

[0019] 5. The hardness of the first bristle bundle and the second bristle bundle are preferably set differently. The lower surface of the cleaning plate can adopt a bristle structure that is hard inside and soft outside, or a bristle structure that is soft inside and hard outside. This makes the first bristle bundle and the second bristle bundle have different scraping forces on stains. The harder bristle bundle can be used to scrape more stubborn stains, which is beneficial to improving the scraping effect of the electric cleaning brush.

[0020] 6. The transmission assembly includes an inner shaft and an outer shaft of an inner and outer sleeve. The outer disc is connected to the lower end of the outer shaft, and the inner disc is connected to the lower end of the inner shaft. The motor drives the two discs to rotate in opposite directions through the transmission assembly. The inner and outer discs that rotate in opposite directions can offset the tendency of the cleaning disc to move during rotation, thereby reducing the force required for the user to hold the entire machine, which is beneficial to improving the user experience.

[0021] 7. A latch and a spring are provided on the housing. When removing the outer disk, the latch can be pressed to make it contact with the outer shaft, so that the outer shaft will not rotate when removing the outer disk, which is convenient for reducing the difficulty of operation when the user replaces the outer disk. When the latch contacts the outer shaft, the spring is deformed by force. When the latch is released, the spring that recovers the deformation can drive the latch to automatically release the outer shaft.

[0022] 8. A plurality of slots spaced apart along the circumferential direction are arranged on the outer peripheral surface of the outer shaft, and the pins that interfere with the outer shaft can be inserted into the slots. The outer shaft is limited circumferentially by the cooperation between the pins and the slots, thereby improving the anti-rotation effect of the outer shaft when the outer disk body is disassembled due to the interference between the pins and the outer shaft.

[0023] 9. The lower end of the outer shaft is provided with an external thread, and the center of the outer disc body is provided with a connection hole with an internal thread. The outer disc body is detachably connected to the lower end of the outer shaft through thread matching. The installation structure of the outer disc body is simple, and it is convenient for users to replace the outer disc body. In addition, the connection between the inner disc body and the inner shaft can also be avoided by using the connection hole, so that the inner disc body can be smoothly connected to the inner shaft.

[0024] A card joint is arranged at the lower end of the inner shaft, and a card hole is arranged at the center of the inner disk body. The inner disk body can be detachably connected to the lower end of the inner shaft through the cooperation of the card hole and the card joint. The installation structure of the inner disk body is simple, and it is convenient for users to replace the inner disk body.

[0025] 10. A plurality of gripping grooves are arranged at intervals on the outer circumference of the inner disk body, and the gripping grooves are concave toward the center of the inner disk body. The user can stably hold the inner disk body through the gripping grooves, so that the user can easily disassemble and assemble the inner disk body when the outer disk body has been connected to the outer shaft.

[0026] The outer disc body is provided with a concave cavity which is concave upward from the lower surface. When the outer disc body is connected to the outer shaft and the inner disc body is connected to the inner shaft, the inner disc body can be accommodated in the concave cavity, so that the lower surfaces of the inner disc body and the outer disc body can be basically flush, so that the first bristle bundle on the inner disc body and the second bristle bundle on the outer disc body can be basically flush, ensuring that the first bristle bundle and the second bristle bundle can effectively scrape the object to be cleaned or the surface to be cleaned when the cleaning disc rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the whole electric cleaning brush of Example 1;

[0028] Figure 2 This is a structural diagram of the motor, reducer, transmission assembly and cleaning disc in the electric cleaning brush of Example 1;

[0029] Figure 3 This is a structural diagram of the inner disc in the electric cleaning brush of Example 1;

[0030] Figure 4 This is a structural diagram of the electric cleaning brush in Example 1 in which the inner disc is not provided with the first hair bundle;

[0031] Figure 5 Another structural diagram of the electric cleaning brush in Example 1 in which the inner disc is not provided with the first hair bundle;

[0032] Figure 6 It is a structural diagram of the inner and outer discs of the electric cleaning brush of the first embodiment;

[0033] Figure 7 This is a structural diagram of the electric cleaning brush in Example 1 in which the outer disc is not provided with the second hair bundle;

[0034] Figure 8 This is a structural diagram of the motor, reducer and transmission assembly in the electric cleaning brush of Example 1;

[0035] Fig. 9 An exploded view of the motor, reducer and transmission assembly in the electric cleaning brush of Example 1;

[0036] Fig.10 This is a structural diagram of the inner shaft in the electric cleaning brush of Example 1;

[0037] Fig.11 This is a structural diagram of the outer shaft, latch and spring in the electric cleaning brush of Example 1.

[0038] In the figure, 100 is a housing, 110 is a shell, 120 is a bottom shell,

[0039] 200-Motor,

[0040] 300-transmission assembly, 310-inner shaft, 311-gear part, 312-card joint, 313-card block, 320-outer shaft, 321-external thread, 322-slot, 330-connecting sleeve, 340-first bearing group, 350-second bearing group, 360-bracket, 361-outer gear ring, 370-planetary gear, 371-upper gear part, 372-lower gear part, 381-upper planet carrier, 382-lower planet carrier, 390-pin shaft,

[0041] 400-cleaning plate, 410-inner plate body, 411-first plug hole, 412-card hole, 413-screw button, 414-holding groove, 420-outer plate body, 421-concave cavity, 422-second plug hole, 423-third plug hole, 424-connecting hole, 425-internal thread, 426-water outlet channel,

[0042] 510-the first hair bundle, 520-the second hair bundle, 530-the third hair bundle,

[0043] 600-reducer, 610-output shaft,

[0044] 710-latch, 720-spring. DETAILED DESCRIPTION

[0045] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the following words indicating orientation or positional relationship such as "upper", "lower", "left", "right", "longitudinal", "lateral", "inner", "outer", "vertical", "horizontal", "top", "bottom", etc. are only based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device / element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0046] Embodiment 1

[0047] Combination Figures 1 to 11The utility model provides an electric cleaning brush according to the first embodiment, comprising a housing 100, a motor 200, a transmission assembly 300 and a cleaning disc 400. The motor 200 and the transmission assembly 300 are arranged inside the housing 100, and the cleaning disc 400 is arranged outside the housing 100. The motor 200 drives the cleaning disc 400 to rotate through the transmission assembly 300. The cleaning disc 400 comprises an inner disc body 410 and an outer disc body 420. The outer disc body 420 surrounds the outer circumference of the inner disc body 410. A first hair bundle 510 is arranged on the lower surface of the inner disc body 410, and a second hair bundle 520 is arranged on the lower surface of the outer disc body 420. A plurality of third hair bundles 530 uniformly distributed in the circumferential direction are arranged on the outer circumferential surface of the outer disc body 420. The third hair bundles 530 extend outward from the outer circumferential surface of the outer disc body 420 in a direction away from the center of the cleaning disc 400.

[0048] A first bristle bundle 510 is arranged on the lower surface of the inner disk body 410, and a second bristle bundle 520 is arranged on the lower surface of the outer disk body 420. The first bristle bundle 510 and the second bristle bundle 520 can be combined to form a scraping surface of the cleaning disk 400. A third bristle bundle 530 is arranged on the outer peripheral surface of the outer disk body 420, so that the outer peripheral surface of the outer disk body 420 forms another scraping surface. The distribution of the bristles on the cleaning disk 400 is reasonably arranged so that the cleaning disk 400 has two scraping surfaces. The two scraping surfaces can be used for scraping or for scraping at the same time. In particular, when the electric cleaning brush is used to clean the floor, the first bristle bundle 510 and the second bristle bundle 520 can be used for scraping the floor, and the third bristle bundle 530 can be used for scraping the wall near the corner. The structure of the cleaning brush is reasonably improved to improve the efficiency of the user in scraping and removing dirt using the machine body, which is conducive to improving the user experience.

[0049] Combination Figure 6 , Figure 7 In this embodiment, a concave cavity 421 is provided at the center of the outer plate body 420, which is concave upward from the lower surface, and the concave cavity 421 is adapted to the inner plate body 410. When the inner plate body 410 and the outer plate body 420 are combined to form the cleaning plate 400, the inner plate body 410 is accommodated in the concave cavity 421. The lower surface of the inner plate body 410 is roughly circular, and the lower surface of the outer plate body 420 is roughly annular, and the lower surface of the inner plate body 410 is roughly flush with the lower surface of the outer plate body 420.

[0050] Combination Figure 3 , Figure 4 In order to set the first hair bundle 510, the lower surface of the inner plate 410 is provided with a plurality of first insertion holes 411 evenly spaced, the upper end of the first hair bundle 510 is fixedly inserted in the first insertion hole 411, and the first hair bundle 510 extends downward from the lower surface of the inner plate 410 for a distance. As an optional solution of this embodiment, the first hair bundle 510 can extend vertically downward from the lower surface of the inner plate 410, or can extend obliquely downward from the lower surface of the inner plate 410.

[0051] Combination Figure 7 In order to set the second hair bundle 520, the lower surface of the outer disk body 420 is provided with a plurality of second insertion holes 422 evenly spaced, the upper end of the second hair bundle 520 is fixedly inserted in the second insertion hole 422, and the second hair bundle 520 extends downwardly from the lower surface of the outer disk body 420, so that the second hair bundle 520 is arranged outwardly with respect to the central axis of the outer disk body 420. In this embodiment, the second hair bundle 520 is arranged in a circle and multiple circles are arranged from the inside to the outside, and the angle of the second hair bundle 520 outwardly inclined relative to the central axis of the outer disk body 420 gradually increases from the inside to the outside. As an alternative to this embodiment, the second hair bundle 520 can also extend vertically downward from the lower surface of the outer disk body 420.

[0052] Combination Figure 7 In order to set the third hair bundle 530, a plurality of third insertion holes 423 evenly spaced along the circumferential direction are provided on the outer circumferential surface of the outer disc body 420, and the inner ends of the third hair bundles 530 close to the center of the outer disc body 420 are fixedly inserted in the third insertion holes 423, and each third hair bundle 530 basically protrudes outward along different radial directions of the outer disc body 420. In this embodiment, the third hair bundles 530 are arranged in a circle along the circumferential direction of the outer disc body 420, so that the third hair bundles 530 cover the entire outer circumferential surface of the outer disc body 420 in the circumferential direction of the cleaning disc 400, so that the third hair bundles 530 can effectively scrape the object or surface to be cleaned no matter how the cleaning disc 400 rotates. As a feasible solution of this embodiment, the third hair bundles 530 can be set to two circles, three circles, or other reasonable circles according to the axial height of the outer circumferential surface of the outer disc body 420.

[0053] In order to improve the scraping effect of the cleaning disc 400, in this embodiment, the hardness of the first bristle bundle 510 and the second bristle bundle 520 are different. Specifically, the hardness of the first bristle bundle 510 is preferably greater than the hardness of the second bristle bundle 520, that is, the cleaning disc 400 adopts a bristle structure that is hard inside and soft outside. The first bristle bundle 510 with greater hardness can be used to scrape more stubborn stains. As an optional solution of this embodiment, the first bristle bundle 510 and the second bristle bundle 520 can be made of plastic or nylon with different hardness, and each first bristle bundle 510 and each second bristle bundle 520 includes multiple bristles. The lower ends of the first bristle bundle 510 and the second bristle bundle 520 are arranged roughly flush, so that the first bristle bundle 510 and the second bristle bundle 520 can effectively scrape the object or surface to be cleaned at the same time when the cleaning disc 400 rotates. As an alternative to this embodiment, the hardness of the first bristle bundle 510 can also be set smaller than the hardness of the second bristle bundle 520, that is, the cleaning disc 400 adopts a bristle structure that is soft inside and hard outside; of course, the hardness of the first bristle bundle 510 and the second bristle bundle 520 can also be set to be roughly the same.

[0054] In order to ensure the scraping and brushing effect of the third bristle bundle 530 on the object to be cleaned, the third bristle bundle 530 should not be too soft, and the third bristle bundle 530 has a certain hardness. In this embodiment, the third bristle bundle 530 can be made of plastic or nylon, and each third bristle bundle 530 includes multiple bristles. In order to ensure the scraping and brushing force of the third bristle bundle 530 while ensuring the service life of the third bristle bundle 530, the length of the third bristle bundle 530 needs to be reasonably set. Figure 1 In this embodiment, the length L of the third hair bundle 530 extending outward relative to the outer circumference of the outer disc body 420 is 10 mm to 40 mm. Preferably, the length L of the third hair bundle 530 is about 30 mm. It is understandable that the length L of the third hair bundle 530 can also be set to 10 mm, 12 mm, 15 mm, 17 mm, 20 mm, 22 mm, 25 mm, 27 mm, 29 mm, 31 mm, 35 mm, 37 mm, 40 mm or other reasonable sizes.

[0055] Combination Figure 1 , Fig. 9 In this embodiment, the transmission assembly 300 includes an inner shaft 310 and an outer shaft 320, the outer shaft 320 is sleeved on the outside of the inner shaft 310, the outer disc 420 is connected to the lower end of the outer shaft 320, and the inner disc 410 is connected to the lower end of the inner shaft 310. Preferably, the motor 200 drives the inner disc 410 and the outer disc 420 to rotate in opposite directions through the transmission assembly 300, and the inner disc 410 and the outer disc 420 that rotate in opposite directions can offset the movement tendency of the cleaning disc 400 during rotation, thereby reducing the strength required for the user to hold the body, which is conducive to improving the user's experience.

[0056] Combination Figure 1 , Figure 2 , Figure 8 , Fig. 9 , Fig.10The housing 100 includes a housing 110 and a bottom housing 120 fixed together, and the electric cleaning brush also includes a reducer 600, which includes an input shaft, an output shaft 610 and a planetary gear reduction structure, and the planetary gear reduction structure is arranged between the input shaft and the output shaft 610. The rotating shaft of the motor 200 is drivingly connected to the input shaft of the reducer 600, and the upper end of the inner shaft 310 is directly drivingly connected to the output shaft 610 of the reducer 600 through a connecting sleeve 330. The outer shaft 320 is axially hollow, and the inner shaft 310 is rotatably mounted inside the outer shaft 320 through a first bearing group 340, and the outer shaft 320 is rotatably mounted on the bottom housing 120 through a second bearing group 350. The upper end of the inner shaft 310 is provided with a gear portion 311 located above the outer shaft 320. The transmission assembly 300 also includes a bracket 360, a planetary wheel 370, an upper planetary carrier 381 and a lower planetary carrier 382. The bracket 360 is fixed to the bottom of the reducer 600. The lower part of the bracket 360 is provided with an outer ring gear 361. The upper planetary carrier 381 is arranged at the bottom of the bracket 360. The lower planetary carrier 382 is located below the upper planetary carrier 381. The planetary wheel 370 is mounted between the upper planetary carrier 381 and the lower planetary carrier 382 through a support shaft 390. The upper end of the support shaft 390 is fixedly connected to the upper planetary carrier 381, the lower end of the support shaft 390 is fixedly connected to the lower planetary carrier 382, ​​and the upper end of the outer shaft 320 is fixedly connected to the upper planetary carrier 381. The outer gear ring 361 on the bracket 360 and the gear part 311 on the inner shaft 310 are distributed up and down, and two or three planetary gears 370 are evenly spaced along the circumferential direction, and each planetary gear 370 includes an upper gear part 371 meshing with the outer gear ring 361 and a lower gear part 372 meshing with the gear part 311. When the motor 200 is working, the power is output to the outside through the output shaft 610 of the reducer 600, and the output shaft 610 drives the inner shaft 310 to rotate synchronously through the connecting sleeve 330. The rotating inner shaft 310 drives the upper planetary carrier 381 and the lower planetary carrier 382 to rotate through the meshing of the gear part 311 and the planetary gear 370, and the lower planetary carrier 382 drives the outer shaft 320 to rotate synchronously. Since the gear portion 311 and the planetary gear 370 mesh with each other and rotate in opposite directions, the inner shaft 310 and the outer shaft 320 also rotate in opposite directions, thereby achieving the purpose of the motor 200 driving the inner shaft 310 and the outer shaft 320 to rotate in opposite directions through the transmission assembly 300.

[0057] In order to facilitate the replacement of the cleaning plate 400, in this embodiment, the outer plate body 420 is detachably connected to the lower end of the outer shaft 320 through threaded engagement, and the inner plate body 410 is detachably connected to the lower end of the inner shaft 310 through snap-fit ​​engagement. The lower end of the outer shaft 320 extends downward from the bottom shell 120 to the housing 100, and an outer thread 321 is provided on the outer circumferential surface of the lower end of the outer shaft 320, which is combined with the outer plate body 420 to be detachably connected to the lower end of the outer shaft 310. Figure 7The center of the outer disk body 420 is provided with a connection hole 424 located at the top of the cavity 421 and connected to the cavity 421. The inner wall of the connection hole 424 is provided with an internal thread 425. The outer disk body 420 is detachably connected to the lower end of the outer shaft 320 through the cooperation of the internal thread 425 and the external thread 321. The lower end of the inner shaft 310 extends downward from the housing 100, and is combined with the housing 100. Fig.10 A clamping joint 312 extending out of the outer shaft 320 is fixed to the lower end of the inner shaft 310, and a plurality of clamping blocks 313 are arranged at intervals along the circumferential direction on the outer circumferential surface of the clamping joint 312. Figure 5 A snap-in hole 412 cooperating with the snap-in joint 312 is provided at the center of the inner disk body 410, and a turn buckle 413 corresponding to the snap-in block 313 is provided on the inner wall of the snap-in hole 412. The inner disk body 410 is detachably connected to the lower end of the inner shaft 310 through the cooperation between the turn buckle 413 on the inner wall of the snap-in hole 412 and the snap-in block 313 on the snap-in joint 312.

[0058] In order to ensure the connection strength of the outer disk body 420, the thread rotation direction of the threaded fit is preferably set opposite to the rotation direction of the outer shaft 320, so that the threaded fit can be tightened when the outer shaft 320 drives the outer disk body 420 to rotate, thereby preventing the outer disk body 420 from being loosened relative to the outer shaft 320. In order to ensure the connection strength of the inner disk body 410, the engagement direction of the turn button 413 and the clamping block 313 is preferably set opposite to the rotation direction of the inner shaft 310, thereby preventing the turn button 413 and the clamping block 313 from being loosened when the inner disk body 410 rotates.

[0059] In order to facilitate the user to replace the inner disk body 410, a plurality of gripping grooves 414 are provided on the outer circumferential surface of the inner disk body 410, which are spaced apart and concave toward the center of the inner disk body 410. The gripping grooves 414 allow the user to effectively grip the inner disk body 410, thereby allowing the user to effectively twist the inner disk body 410 so that the inner disk body 410 can be snapped into place or detached from the inner shaft 310.

[0060] Combination Fig.11 In order to facilitate the user to replace the outer disk body 420, the housing 100 is provided with a latch 710 for locking the outer shaft 320 and a spring 720 acting on the latch 710. One end of the spring 720 abuts against the latch 710 and the other end abuts against the housing 100. The latch 710 that is pressed to lock the outer shaft 320 causes the spring 720 to elastically deform. The spring 720 that restores the deformation drives the released latch 710 to separate from the outer shaft 320. When removing the outer disk body 420, the latch 710 can be pressed to make the latch 710 abut against the outer shaft 320, so that the outer shaft 320 will not rotate when the outer disk body 420 is removed, which is convenient for reducing the difficulty of users to replace the outer disk body 420. When the latch 710 contacts the outer shaft 320 , the spring 720 is deformed by force. When the latch 710 is released, the spring 720 that recovers its deformation can drive the latch 710 to automatically release the outer shaft 320 .

[0061] In order to improve the locking effect of the pin 710 on the outer shaft 320, a plurality of slots 322 are provided on the outer circumferential surface of the outer shaft 320 and are spaced apart along the circumferential direction for the pin 710 to be inserted into. The pin 710 that contacts the outer shaft 320 can be inserted into the slots 322 so that the outer shaft 320 is circumferentially limited, thereby improving the locking effect of the pin 710 and the outer shaft 320 when the outer disk body 420 is disassembled.

[0062] Combination Figure 7 In order to improve the scraping effect of the cleaning disc 400 on the object to be cleaned, a water outlet channel 426 can be set on the top wall of the cavity 421. The specific structure of the water outlet channel 426 can refer to the specific record in CN216876248U and will not be repeated here.

[0063] When in use, the outer disc 420 is first connected to the lower end of the outer shaft 320 by threaded engagement, and then the inner disc 410 is connected to the lower end of the inner shaft 310 by snap engagement. The motor 200 is started by the button on the housing 100, and the working motor 200 drives the inner disc 410 and the outer disc 420 to rotate in opposite directions through the reducer 600 and the transmission assembly 300. The rotating inner disc 410 and the outer disc 420 cause the first bristle bundle 510 and the second bristle bundle 520 to scrape the object or surface to be cleaned. When the electric cleaning brush of this embodiment is used to clean the floor, the first bristle bundle 510 and the second bristle bundle 520 scrape the floor, and the third bristle bundle 530 can scrape the wall near the floor. The user does not need to adjust the direction of the cleaning disc 400 to effectively scrape the wall near the corner, thereby improving the user's experience.

[0064] It is understandable that the electric cleaning brush of this embodiment can be powered by a battery, or can be powered by a mains power supply through an electric wire.

[0065] It can be understood that the overall shape of the electric cleaning brush of this embodiment can be set to a pistol-type structure, a straight-line structure, or an extended rod-shaped structure.

[0066] In addition to the above preferred embodiments, the present invention has other implementation modes. Those skilled in the art can make various changes and modifications based on the present invention. As long as they do not deviate from the spirit of the present invention, they should all fall within the scope defined in the claims of the present invention.

Claims

1. An electric cleaning brush, comprising a housing, a motor, a transmission assembly and a cleaning disc, wherein the motor and the transmission assembly are arranged inside the housing, and the cleaning disc is arranged outside the housing, and the motor drives the cleaning disc to rotate through the transmission assembly, and the cleaning disc comprises an inner disc body and an outer disc body, and the outer disc body surrounds the outer circumference of the inner disc body, and the lower surface of the inner disc body is provided with a first hair bundle, and the lower surface of the outer disc body is provided with a second hair bundle, characterized in that: The outer circumferential surface of the outer disc body is provided with a plurality of third hair bundles evenly distributed along the circumferential direction, and the third hair bundles extend outward from the outer circumferential surface of the outer disc body in a direction away from the center of the cleaning disc.

2. An electric cleaning brush according to claim 1, characterized in that: The third hair bundles are arranged in a circle along the outer peripheral surface of the outer disk body.

3. The electric cleaning brush according to claim 1, characterized in that: The third hair bundles extend outwardly in the radial direction of the outer disk.

4. The electric cleaning brush according to claim 1, characterized in that: The length L of the third hair bundle is 10 mm to 40 mm.

5. The electric cleaning brush according to claim 1, characterized in that: The first hair bundle and the second hair bundle have different hardness.

6. An electric cleaning brush according to any one of claims 1 to 5, characterized in that: The motor drives the inner disc and the outer disc to rotate in opposite directions through a transmission assembly. The transmission assembly includes an inner shaft and an outer shaft. The outer shaft is sleeved on the outside of the inner shaft. The outer disc is connected to the lower end of the outer shaft, and the inner disc is connected to the lower end of the inner shaft.

7. An electric cleaning brush according to claim 6, characterized in that: The housing is provided with a latch for locking the outer shaft and a spring acting on the latch. The latch for locking the outer shaft under pressure causes the spring to undergo elastic deformation, and the spring that restores the deformation drives the released latch to separate from the outer shaft.

8. An electric cleaning brush according to claim 7, characterized in that: A plurality of slots for inserting the latch pins are arranged on the outer peripheral surface of the outer shaft and are distributed at intervals along the circumferential direction.

9. The electric cleaning brush according to claim 6, characterized in that: The lower end of the outer shaft extends out of the casing and is provided with an external thread, a connecting hole extending axially is provided at the center of the outer disk body, an internal thread is provided on the hole wall of the connecting hole, and the outer disk body is connected to the lower end of the outer shaft through the cooperation of the internal thread and the external thread; and / or, the lower end of the inner shaft extends out of the casing and is provided with a clamping joint, a clamping hole is provided at the center of the inner disk body, and the inner disk body is connected to the lower end of the inner shaft through the cooperation of the clamping hole and the clamping joint.

10. The electric cleaning brush according to claim 6, characterized in that: The outer circumferential surface of the inner plate is provided with a plurality of holding grooves which are spaced apart and concave toward the center of the inner plate; and / or the outer plate is provided with a concave cavity which is concave upward from the lower surface and is used to accommodate the inner plate.

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