A surface cleaning apparatus having a mop removable roller brush

Abstract

The application discloses a surface cleaning device with a detachable roller brush, comprising a shell with a roller brush cavity and a driving device, wherein the roller brush is arranged in the roller brush cavity, the driving device is arranged in the roller brush or the shell and drives the roller brush to rotate to wipe a surface to be cleaned, the roller brush comprises a first supporting piece, a second supporting piece and a mop, the mop is arranged on the outer surface of the second supporting piece, the second supporting piece is detachably sleeved on the first supporting piece and is limited in the circumferential direction to make the first supporting piece and the second supporting piece rotate synchronously, and the axial length of the first supporting piece is smaller than the axial length of the second supporting piece. The surface cleaning device with the above technical scheme not only realizes low-cost replacement of the mop on the roller brush, but also has stable structure and guarantees the wiping effect on the surface to be cleaned.

Description

Technical Field

[0001] This invention relates to the field of cleaning equipment accessories, and in particular to a surface cleaning device with a detachable mop roller brush. Background Technology

[0002] With the continuous development of cleaning equipment, surface cleaning devices are widely used in people's lives, such as robotic vacuum cleaners and handheld cleaning devices. These devices are usually equipped with roller brushes, which achieve better cleaning results by rotating the roller brush relative to the surface to be cleaned. The bristles on the roller brush need to be replaced regularly due to wear and tear from long-term cleaning to ensure cleaning effectiveness. However, current technology requires replacing the entire second support assembly to replace the brush, resulting in high replacement costs. Summary of the Invention

[0003] In order to overcome the shortcomings of the prior art, the present invention provides a surface cleaning device with a detachable roller brush. When replacing the brush bristles, only a part of the roller brush structure needs to be replaced, resulting in low replacement cost.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A surface cleaning device with a detachable roller brush includes a housing with a roller brush cavity and a driving device. The roller brush is disposed inside the roller brush cavity. The driving device is disposed inside the roller brush or the housing and drives the roller brush to rotate to wipe the surface to be cleaned. The roller brush includes a first support member, a second support member, and a mop. The mop is disposed on the outer surface of the second support member. The second support member is detachably sleeved on the first support member and is relatively limited in the circumferential direction so that the first support member and the second support member rotate synchronously. The axial length of the first support member is less than the axial length of the second support member.

[0006] In the above technical solution, the roller brush is a single unit connected to the housing via a detachable structure. The output end of the drive device is connected to the roller brush for transmission. When the surface cleaning device is working normally, the drive device can drive the first and second support members to rotate synchronously. When the mop needs to be replaced, the roller brush can be removed from the housing, the second support member can be separated from the first support member, the new second support member can be assembled with the first support member, and then reinstalled into the housing. When replacing the mop, it is not necessary to replace the entire roller brush; only the second support member needs to be removed and replaced separately. The second support member has a lower cost than the entire roller brush, which can reduce the cost of replacing the bristles. The axial length of the first support member is less than the axial length of the second support member. This structure ensures that the second support member can cover the entire first support member, maximizing the effective cleaning area of ​​the roller brush. Furthermore, the smaller the axial length of the first support member, the easier it is for it to extend into the hollow cavity.

[0007] Preferably, one end of the second support member has a hollow cavity, and one end of the first support member extends into the hollow cavity and is kinetically connected to the side wall of the hollow cavity. The other end of the second support member has an end cap, which is rotatably connected to the housing. The outer surface of the first support member is adapted to and in close contact with the side wall of the hollow cavity of the second support member. The first support member provides radial support to the second support member, ensuring that the second support member is not easily deformed even when subjected to large radial external forces during roller brush operation, such as the force of the scraping component pressing against the mop. This guarantees the cleaning and scraping effects, reduces the strength requirements of the second support member itself, allows for a reduction in the thickness of the second support member, and further reduces the manufacturing cost of the second support member. The end cap has both supporting and connecting functions.

[0008] Preferably, the first support member has a first limiting portion on the circumferential surface of the portion extending into the hollow cavity, and a second limiting portion adapted to the first limiting portion is provided on the circumferential wall of the hollow cavity. The first limiting portion and the second limiting portion are adapted to restrict the relative circumferential movement between the first support member and the second support member; and / or, the end face of the first support member extending into the hollow cavity has a third limiting portion, and a fourth limiting portion adapted to the third limiting portion is provided on the end wall of the hollow cavity. The third limiting portion and the fourth limiting portion are adapted to restrict the relative circumferential movement between the first support member and the second support member.

[0009] The structure can achieve circumferential fixation of the first support member and the second support member, enabling them to be connected by transmission, without affecting the axial movement of the second support member relative to the first support member, and can achieve a detachable connection between the second support member and the first support member.

[0010] Preferably, one end of the second support member is provided with an end cap, one end of which is fixedly connected to the second support member, and the other end of which is driveably connected to the first support member. The end cap provides radial support to one end of the second support member, and the drive connection between the end cap and the first support member allows for torque transmission, evenly distributing the driving torque of the drive device to all axial positions of the second support member. Compared to the method where one end of the second support member bears the torque and then transmits it to all axial positions of the entire second support member, the technical solution of this application reduces the deformation of the second support member when it bears the same torque as the above-described solution, thus reducing the strength requirements for the second support member, thereby reducing the thickness of the second support member and further reducing its manufacturing cost.

[0011] Preferably, one end of the second support member is provided with a detachable end cap, which is detachably connected to the first support member to fix the second support member to the first support member. The end cap and the first support member are combined to form a detachable structure, which limits and fixes the second support member from both ends.

[0012] Preferably, the end cap has a groove on its inner end face, and the end of the mop extends at least partially into the groove. The end cap can press and fix the end of the mop. When the scraping component is cleaning, it only contacts the mop located inside the end cap. The end of the mop inserted into the groove does not directly contact the scraping component, which can reduce the probability of the end of the mop turning over and allow the mop to more reliably cover the outer surface of the second support.

[0013] Preferably, the driving device is disposed within the first support member and is drivenly connected to the first support member; alternatively, the driving device is disposed within the housing, with its output end extending into the roller brush cavity and drivenly connected to the end cap. Different positions of the driving device can be selected as needed. When the driving device is disposed within the housing, the structure of the roller brush assembly is simpler, and the transmission structure is also relatively simple, reducing costs. When the driving device is disposed within the first support member, the housing structure is simpler, fully utilizing the space within the first support member. Since no transmission structure is needed on either side of the first support member, the structural dimensions on both sides of the first support member can be reduced, decreasing the width of the areas that cannot be cleaned on both sides of the roller brush, thus achieving a better cleaning effect.

[0014] Preferably, the roller brush further includes a latching member, which is detachably connected to the housing and rotatably connected to the other end of the first support member. The detachable connection between the latching member and the housing allows for a detachable connection between the roller brush and the housing as a whole. This detachable connection can be achieved via a magnetic attraction structure or a snap-fit ​​structure. After removing the roller brush from the housing using the latching member, the second support member can be removed from the first support member for replacement.

[0015] Preferably, the mop is adhesively or fused to the outer surface of the second support member, or the roller brush cavity is further provided with a scraping component, which is interference-fitted with the mop to scrape away dirt. This structure ensures that the bristles are firmly fixed to the surface of the second support member, and the bristles can be replaced simply by replacing the second support member. The scraping component can scrape and clean the mop. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the surface cleaning device structure in Embodiment 1 of the present invention;

[0017] Figure 2 This is an exploded view of the roller brush structure in Embodiment 1 of the present invention;

[0018] Figure 3 This is a schematic diagram of the cross-sectional structure of the roller brush in Embodiment 1 of the present invention;

[0019] Figure 4 This is a schematic diagram of the second support structure in Embodiment 1 of the present invention;

[0020] Figure 5 yes Figure 3 Enlarged view of part A in the middle;

[0021] Figure 6 This is a schematic diagram of the end cap structure in Embodiment 1 of the present invention;

[0022] Figure 7 This is a partial schematic diagram of the roller brush side-pulling structure in Embodiment 1 of the present invention;

[0023] Figure 8 This is a schematic diagram of the latch structure in Embodiment 1 of the present invention;

[0024] Figure 9 This is a schematic diagram of the cross-sectional structure of the roller brush in Embodiment 2 of the present invention;

[0025] Figure 10 This is a schematic diagram of the floor brush structure with roller brush in Embodiment 4 of the present invention;

[0026] Figure 11 This is a schematic diagram of the floor brush structure without roller brush in Embodiment 4 of the present invention. Detailed Implementation

[0027] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0028] It should be noted that the surface cleaning device described herein can be a dry vacuum cleaner or a wet / dry floor cleaning / mopping device. Specifically, the surface cleaning device can be a handheld cleaning machine with a handle and manually operated by the user, such as a handheld floor scrubber, handheld floor mop, or handheld vacuum cleaner; it can also be a cleaning robot with drive wheels, which can control the drive wheels to move according to its stored program and control the cleaning rollers to clean the floor. The present invention will be further described below using a handheld surface cleaning device as an example, in conjunction with the accompanying drawings and specific embodiments.

[0029] Example 1:

[0030] like Figure 1-8As shown, a surface cleaning device with a detachable mop roller brush includes a body 40 and a floor brush assembly 50 pivotally connected to the bottom of the body. The floor brush assembly 50 includes a housing 20, a roller brush cavity 21 disposed on the housing 20, a drive device (not shown in the figure), and a roller brush 10. The drive device may specifically be a drive motor, and the roller brush 10 is connected to the drive motor to drive the mop to contact the surface to be cleaned. At least a portion of the roller brush 10 is disposed within the roller brush cavity 21. The output end of the driving device is drively connected to the roller brush 10. The roller brush 10 includes a first support member 1 and a second support member 2 detachably connected to the first support member 1. The outer surface of the second support member 2 is provided with a mop 5 for cleaning the surface to be cleaned. One end of the second support member 2 is provided with a hollow cavity 2.1. One end of the first support member 1 extends into the hollow cavity 2.1 and is circumferentially fixed to the second support member 2 so that the second support member 2 rotates synchronously with the first support member 1. The outer surface of the portion of the first support member 1 extending into the hollow cavity 2.1 is adapted to and in close contact with the side wall of the hollow cavity 2.1 so that the first support member 1 can provide radial support to the second support member 2 from the inside. A scraping component (not shown in the figure) is also provided in the roller brush cavity. The scraping component is interference-fitted with the mop to scrape off dirt. The axial length of the first support member is less than the axial length of the second support member. Optionally, the axial length of the first support member is less than 2 / 3 of the axial length of the second support member. Preferably, the axial length of the first support member is less than 1 / 2 of the axial length of the second support member.

[0031] It should be noted that the mop is made of absorbent material with twisted yarn, which has a better cleaning effect on wet dirt on surfaces such as floors and carpets.

[0032] When the surface cleaning device is working normally, the drive unit can drive the first and second supports to rotate synchronously. When the bristles need to be replaced, the roller brush can be removed from the housing, then the second support can be separated from the first support, the new second support can be assembled with the first support, and then reinstalled into the housing. When replacing the bristles, it is not necessary to replace the entire roller brush; only the second support needs to be removed and replaced separately. The second support has a lower cost compared to the entire roller brush, which can reduce the replacement cost of the mop. In addition, due to the presence of the second support, the first support provides radial support to the second support. Even when subjected to large radial external forces during roller brush operation, such as the force of the scraping component pressing against the mop, the second support is not easily deformed, reducing the strength requirements of the second support itself and thus reducing its thickness. Moreover, it ensures that the bristles are firmly fixed to the surface of the second support, allowing for more stable contact between the mop and the ground during cleaning, increasing the cleaning and scraping effects. Compared to existing technologies, the first and second supports are processed separately, but the structure is simpler and the processing is more convenient. Finally, setting the axial length of the first support member to be less than that of the second support member ensures that the second support member can cover the entire first support member, maximizing the effective cleaning area of ​​the roller brush. Furthermore, the smaller the axial length of the first support member, the easier it is for the first support member to extend into the hollow cavity.

[0033] Furthermore, one end of the first support member 1 extends into the hollow cavity and is kinetically connected to the side wall of the hollow cavity, and the other end of the second support member is provided with an end cap 3, which is rotatably connected to the housing. Specifically, the housing is provided with a slot 22, one end of the roller brush 10 is rotatably connected to the slot 22, and the other end of the roller brush is connected to the housing through a latch 4, thereby installing the roller brush in the roller brush cavity.

[0034] Optionally, the driving device is disposed within the first support member 1 and is connected to the first support member in a transmission manner.

[0035] Preferably, in this embodiment, the driving device is disposed within the housing, and the output end of the driving device extends into the roller brush cavity and is drively connected to the end cover. Specifically, the output shaft of the driving device is disposed on the connecting part 23 and extends into the roller brush cavity 21. The drive connection between the driving device and the end cover 3 includes a groove disposed on the end cover 3 and a protrusion disposed on the output shaft of the driving device. The groove and the protrusion are adapted to each other. When the driving device rotates, it drives the end cover 3 to rotate, and then drives the first support member 1 and the second support member 2 to rotate.

[0036] In one embodiment, a first limiting portion 1.1 is provided on the circumferential surface of the portion of the first support member 1 that extends into the hollow cavity 2.1, and a second limiting portion 2.2 is provided on the circumferential wall of the hollow cavity 2.1. The first limiting portion 1.1 and the second limiting portion 2.2 are adapted to restrict the circumferential relative movement between the second support member 2 and the first support member 1. The first limiting portion 1.1 is one of a protrusion structure and a groove structure, and the second limiting portion 2.2 is the other of a protrusion structure and a groove structure. The structure of the protrusion structure and the groove structure can achieve circumferential fixation of the two, so that the two can be connected by transmission, without affecting the axial movement of the second support member 2 relative to the first support member 1, and can achieve a detachable connection between the second support member 2 and the first support member 1. Optionally, in an alternative embodiment, the protrusion or groove is arranged along the axial direction of the roller brush. In another optional embodiment, the outer circumferential surface of the first support member 1 is provided with an external thread structure, and the hollow cavity is provided with an internal thread structure adapted to the external thread structure. The first support member 1 and the second support member 2 are connected by the thread structure. When the thread structure is tightened, the rotation direction of the second support member 2 is consistent with the rotation direction of the second support member 2 when the roller brush assembly is working, so that the second support member will not fall off the first support member when the roller brush assembly is working, thereby achieving circumferential fixation of the two. The circumferential fixation method of the first support member 1 and the second support member 2 can also adopt other structures, such as those that prevent relative movement of the first support member 1 and the second support member 2 in the circumferential direction, but allow relative movement in the axial direction, thereby achieving a detachable connection structure for the first support member 1 and the second support member 2.

[0037] In another embodiment, the end face 1A of the first support member 1 extending into the hollow cavity 2.1 is provided with a third limiting part 1.2, and the end wall of the hollow cavity 2.1 is provided with a fourth limiting part 2.3 adapted to the third limiting part 1.2. The third limiting part 1.2 and the fourth limiting part 2.3 are adapted to restrict the circumferential relative movement between the first support member 1 and the second support member 2. The third limiting part 1.2 is one of a protrusion structure and a groove structure, and the fourth limiting part 2.3 is the other of a protrusion structure and a groove structure. The structure of the protrusion structure and the groove structure can achieve circumferential fixation of the two, so that the two can be connected by transmission, without affecting the axial movement of the second support member 2 relative to the first support member 1, and can achieve a detachable connection between the second support member 2 and the first support member 1. The adaptation of the first limiting part to the second limiting part and / or the adaptation of the third limiting part to the fourth limiting part can achieve the transmission connection between the first support member 1 and the second support member 2. Specifically, in this embodiment, the end face 1A is provided with a claw, and the end wall of the hollow cavity is provided with a groove, and the claw and the groove cooperate to limit the movement.

[0038] The roller brush 10 also includes a latch 4, which is detachably connected to the housing 20 and rotatably connected to one end of the first support member 1. The roller brush 10, as a whole, is detachably connected to the housing 20 via the latch 4, allowing for a detachable connection between the roller brush 10 and the housing 20. After removing the roller brush 10 from the housing 20 via the latch 4, the second support member 2 can be removed from the first support member 1 for replacement.

[0039] In one embodiment, the roller brush cavity extends through the side wall of the housing, and the roller brush is inserted into or removed through an opening in the side wall. The housing includes a connecting portion 23, and the other end of the second support member 2 is provided with an end cap 3. One end of the roller brush 10 is rotatably connected to the connecting portion 23 through the end cap 3, and the other end of the roller brush 10 is connected to the side wall of the housing 20 through a latching member 4, so as to install the roller brush in the roller brush cavity.

[0040] In one embodiment, the latch 4 can be detachably connected to the housing 20 via a magnetic attraction structure. The magnetic attraction structure allows the latch 4 and the roller brush 10 to move relative to the housing along the axial direction of the roller brush 10, and to be removed from the housing after overcoming the magnetic attraction force. Specifically, the latch 4 has a first magnetic attraction portion 401 and a first limiting portion 402, with the first limiting portion 402 located outside the first magnetic attraction portion 401; the side wall of the housing has a second magnetic attraction portion 501 and a second limiting portion 502, with the second limiting portion 502 located outside the second magnetic attraction portion 501. The first magnetic attraction portion 401 and the second magnetic attraction portion 501 are attracted to each other so that the first limiting portion 402 and the second limiting portion 502 cooperate to limit the movement at least in the front-rear direction. The first magnetic attraction part and the second magnetic attraction part are attracted to each other, so that the latch is limited in the direction of the rotation center axis of the roller brush; the first limiting part and the second limiting part cooperate to limit the latch member on the plane where the end face is located, thereby fixing the latch assembly on the brush body.

[0041] In existing technologies, the first limiting part and the first magnetic suction part, and the second limiting part and the second magnetic suction part are usually integrated, which makes the structure of the first and second magnetic suction parts complex, thus occupying more space, resulting in a thicker latching member, affecting the edge cleaning effect, and making it inconvenient for users to install and align. In this embodiment, the first limiting part and the first magnetic suction part are set independently, and the second limiting part and the second magnetic suction part are set independently. On the one hand, this simplifies the structure of the first and second magnetic suction parts, keeps the thickness of the latching member within a minimum range, and improves the edge cleaning ability and effect; on the other hand, during the installation process, the first limiting part and the second limiting part automatically cooperate and limit the movement while magnetically attracting, thereby reducing the precision requirements during the assembly process and facilitating users to quickly install the roller brush assembly.

[0042] In a preferred embodiment of this invention, the first magnetic attraction part is provided with a ferromagnetic metal material, the second magnetic attraction part is provided with a magnet, and the metal material is integrally injection molded onto the latch.

[0043] As an optional implementation of this embodiment, the distance from the first limiting part 402 or the second limiting part 502 to the rotation center axis of the roller brush is greater than the distance from the first magnetic part 401 or the second magnetic part 501 to the rotation center axis of the roller brush.

[0044] In a preferred embodiment of this invention, the distance from the first limiting part 402 or the second limiting part 502 to the rotation center axis of the roller brush is less than the distance from the first magnetic attraction part 401 or the second magnetic attraction part 501 to the rotation center axis of the roller brush. Specifically, the first limiting part and the second limiting part cooperate to at least restrict the movement of the roller brush assembly relative to the brush body in the front-back direction. Preferably, in this embodiment, the first limiting part and the second limiting part simultaneously restrict the movement of the latching member relative to the brush body in the front-back and vertical directions, as well as its rotation relative to the brush body on the side wall surface of the brush.

[0045] By setting the distance from the first or second limiting part to the rotation center axis of the roller brush to be less than the distance from the first or second magnetic attraction part to the rotation center axis of the roller brush, the lever arm between the first or second limiting part and the rotation center of the roller brush can be reduced, preventing the engagement reliability of the first and second magnetic attraction parts from being affected by the enlarged limiting gap between them.

[0046] In an optional embodiment, at least one of the first limiting part 402 and the second limiting part 502 is provided with a protrusion, and the other of the first limiting part 402 and the second limiting part 502 is provided with a groove that mates with the protrusion. In this embodiment, the first limiting part 402 is provided with a protrusion, and the second limiting part 502 is provided with a groove. Preferably, the protrusion is a frustum structure, and the groove structure is adapted to the frustum. This allows the latching member to move only in the front-back and left-right directions of the brush body, while the first magnetic part and the second magnetic part restrict the movement of the latching member in the rotation axis direction of the roller brush, thus fixing the latching member to the connecting part.

[0047] In another optional embodiment of this invention, a first groove is provided on the side wall of the housing. The shape of the latching member is adapted to the first groove to restrict the latching member from moving vertically in the brush body. At least one of the first limiting part 402 and the second limiting part 502 is provided with a protrusion, and the other of the first limiting part 402 and the second limiting part 502 is provided with a groove. The protrusion and the groove cooperate to restrict the latching member from moving forward and backward in the brush body. At the same time, the first magnetic part and the second magnetic part restrict the latching member from moving in the direction of the roller brush's rotation axis, thus fixing the latching member to the connecting part.

[0048] Furthermore, the latch 4 is also provided with a disassembly part 405, which is located on the outer side of the latch 4 opposite to the roller brush, so that the pulling force during disassembly is located on the rotation axis of the roller brush.

[0049] By providing a disassembly portion on the outer side of the latch member opposite to the roller brush, the force applied when disassembling the roller brush by grasping the disassembly portion is along the rotation axis of the roller brush. Therefore, there is no lever arm, and no torque force on the latch member, avoiding damage to the latch member due to improper force application during disassembly, thus extending its service life. Correspondingly, the strength of the latch member can be appropriately reduced, allowing for a thinner latch member, minimizing adverse effects during the cleaning of edges and corners with the roller brush, and enabling the cleaning of more edges and corners.

[0050] A recess extending into the interior of the roller brush is provided on the outer surface of the latch member opposite to the roller brush, and the disassembly part is located in the recess.

[0051] By placing the disassembly part in a recessed cavity within the roller brush, the internal space of the roller brush is fully utilized, avoiding the occupation of its external space, thus reducing the cleaning dead zone between the roller brush and the wall during cleaning.

[0052] The projected area of ​​the latching element on the brush end face is not less than 2 / 3 of the brush end face area. This allows the latching element to enclose the brush end face within the brush cavity, preventing external objects from being drawn into the brush end face. Preferably, the projected area of ​​the latching element on the brush end face is greater than or equal to the brush end face area, meaning the latching element completely encloses the brush end face.

[0053] Optionally, a sealing element (not shown in the figure) is provided at the opening of the hollow cavity 2.1 or at the root of the first support member 1 to prevent sewage or dust from entering the hollow cavity.

[0054] Optionally, the roller brush is further provided with a limiting component (not shown in the figure). The limiting component includes a release part and a locking part. The release part and the locking part are mechanically connected. The release part is at least partially exposed outside the roller brush. When the second support member is sleeved on the first support member, the locking part limits the first support member and the second support member in the axial direction to prevent the user from pulling out the first support member directly when disassembling the roller brush from the side, leaving the second support member in the roller brush cavity. When the user pulls the roller brush out from the side, as long as the release part is triggered, the release part drives the locking part to unlock, and the first support member and the second support member can be separated.

[0055] The axial length of the first support member 1 is less than the axial length of the second support member 2, and the smaller the axial length of the first support member 1, the easier it is for the first support member 1 to extend into the hollow cavity 2.1.

[0056] In one embodiment, the driving device is disposed inside the first support member 1 and is connected to the first support member 1 in a transmission manner. When the driving device is disposed inside the first support member, the housing structure can be simplified and the space inside the first support member can be fully utilized. Since there is no need to set a transmission structure on both sides of the first support member, the structural dimensions on both sides of the first support member can be reduced, thereby reducing the width of the area that cannot be cleaned on both sides of the roller brush and achieving a better cleaning effect.

[0057] Furthermore, a groove 3.1 is provided on the inner end face of the end cap 3, and at least part of the end of the mop 5 extends into the groove 3.1.

[0058] In the above technical solution, the end cap 3 can press and fix the end of the mop 5. When the scraping component is cleaning, it only contacts the mop 5 located inside the end cap 3. The end of the mop 5, which is inserted into the groove 3.1, does not directly contact the scraping component, which can reduce the probability of the end of the mop 5 turning over and allow the mop 5 to more reliably cover the outer surface of the second support 2. The inner end face of the end cap 3 refers to the end face of the end cap 3 on the side closer to the center of the roller brush in the axial direction, where the axial direction refers to the direction of the roller brush rotation axis.

[0059] In one embodiment, the mop 5 includes an inner attachment layer and a bristle layer consisting of absorbent bristles attached to the outer side of the attachment layer. The inner end face of the end cap 3 has a plurality of protrusions 3.2 extending axially inward towards the roller brush. The protrusions 3.2 are evenly distributed circumferentially around the rotation axis of the roller brush, and the axial width of the protrusions 3.2 is less than the axial depth of the groove 3.1.

[0060] The bristle layer serves a cleaning function, and the adhesion layer adheres to the bristle layer and is fixed to the outer surface of the second support 2. The protrusion 3.2 further strengthens the pressing and fixing effect of the end cap 3 on the end of the mop 5, and the absorbent bristles around the protrusion 3.2 can bend towards one side of the protrusion 3.2 and cover the outside of the protrusion 3.2, so that the area of ​​the roller brush with the protrusion 3.2 also has a cleaning function. The axial inner side refers to the direction along the axial direction of the roller brush towards the center of the roller brush, and the axial outer side refers to the direction along the axial direction of the roller brush from the center of the roller brush away from the center of the roller brush.

[0061] In one embodiment, the outer diameter of the end cap 3 is smaller than the outer diameter of the roller brush, and the length of the scraping member is greater than or equal to the distance between the end caps 3 at both ends of the roller brush. The scraping member is interference-fitted with the mop 5, the interference amount between the scraping member and the mop 5 is a, the outer diameter of the roller brush is d1, the outer diameter of the end cap 3 is d2, and a ≤ 1 / 2 (d1-d2).

[0062] The structure ensures that the mop cloth 5 on the roller brush is always within the range of the scraping member in the axial direction. As the roller brush rotates, the scraping member can scrape and clean the entire mop cloth 5. Furthermore, the mop cloth 5 is closer to the scraping member than the end cap 3, which facilitates the scraping member pressing the mop cloth 5 firmly for effective cleaning. Even when the scraping member is pressing the mop cloth 5, a gap remains between the end cap 3 and the scraping member, meaning the end cap 3 never comes into contact with the scraping member, ensuring that the scraping member can consistently press the mop cloth 5 firmly without being affected by the end cap 3. The outer diameter of the roller brush refers to the outermost diameter including the second support member 2 and the mop cloth 5.

[0063] In one embodiment, such as Figure 3 As shown, the second support member 2 has a reduced diameter portion 2.5 near its end. The outer diameter of the reduced diameter portion 2.5 decreases from the axial inner side to the axial outer side. The second support member is a hollow cylinder, and its end extends into a groove 3.1. The radial width of the groove 3.1 increases from the side near the end cap 3 towards the end near the second support member 2. This structure facilitates the end of the mop 5 extending into the groove 3.1 and increases the integrity of the end of the mop 5 with the end of the second support member 2, allowing the end of the mop 5 to more reliably cover the outside of the second support member 2.

[0064] In one embodiment, the end cap 3 has a protruding limiting part 3.3 at the center of its inner end face, and a positioning block 3.4 is provided on the outer periphery of the limiting part 3.3. The inner sidewall of the hollow cylindrical second support member 2 is provided with a positioning groove 4.2 that is adapted to the positioning block 3.4. The positioning block 3.4 is inserted into the positioning groove 4.2 so that the end cap 3 and the second support member 2 are circumferentially positioned.

[0065] In one embodiment, the mop 5 is formed by spiral splicing, and the second support member 2 is bonded and fixed to the mop 5.

[0066] Example 2:

[0067] like Figure 9 As shown, the difference between this embodiment and Embodiment 1 is that: one end of the second support member 2 is provided with an end cap 3, one end of the end cap 3 is fixedly connected to the second support member 2, and the other end of the end cap 3 is drivenly connected to the first support member 1. Specifically, one end of the end cap 3 extends into the hollow cavity 2.1 and is drivenly connected to one end of the first support member 1 extending into the hollow cavity 2.1. The end cap 3 contacts the inner and outer surfaces of the hollow cavity 2.1, increasing the supporting effect. The drive connection between the end cap 3 and the first support member 1 can be achieved by providing a protrusion on one of the contacting end faces and a groove on the other that matches the protrusion, thus realizing the drive connection between the two through the matching of the protrusion and the groove.

[0068] The proposed solution ensures that the second support member 2 can cover the entire first support member 1, maximizing the effective cleaning area of ​​the roller brush 10. Furthermore, a smaller axial length of the first support member 1 facilitates its insertion into the hollow cavity 2.1. The end cap 3 is connected to the first support member 1 via a transmission connection, enabling torque transmission and evenly distributing the driving torque of the drive device to all axial positions of the second support member 2. Compared to the method where one end of the second support member 2 bears the torque, and the torque is then transmitted through the second support member 2 itself to all axial positions, the technical solution of this application reduces the deformation of the second support member 2, lowers the strength requirements for the second support member 2, reduces the thickness of the second support member 2, and further reduces the manufacturing cost of the second support member 2. The second support member 2 and the end cap 3 can be fixed by snap-fit ​​or adhesive bonding.

[0069] Example 3:

[0070] The difference between this embodiment and embodiments 1 and 2 is that: one end of the second support member 2 is provided with a detachable end cap 3. The end cap 3 is detachably connected to the first support member 1 to fix the second support member 2 onto the first support member 1. The end cap 3 contacts the inner and outer surfaces of the hollow cavity 2.1 to increase the supporting effect. The transmission connection between the end cap 3 and the first support member 1 can be achieved by providing a protrusion on one of the contacting end faces and a groove on the other that matches the protrusion. The transmission connection between the two is achieved through the matching of the protrusion and the groove.

[0071] In this embodiment, the driving device is housed within the housing, and its output shaft extends into the roller brush cavity 21 and is drive-connected to the end cap 3. The drive connection between the driving device and the end cap 3 includes a groove on the end cap 3 and a protrusion on the output shaft of the driving device. The groove and protrusion are adapted to each other. When the driving device rotates, it drives the end cap 3 to rotate, which in turn drives the first support member 1 and the second support member 2 to rotate. The end cap 3 can be combined with the first support member 1 to form a detachable structure, limiting and fixing the second support member 2 from both sides.

[0072] The end cap 3 and the first support member 1 are combined to form a detachable structure, which limits, clamps, and fixes the second support member 2 from both sides. The end cap does not need to be replaced when the mop needs to be replaced. This design ensures that the second support member 2 can cover the entire first support member 1, maximizing the effective cleaning area of ​​the roller brush 10. Furthermore, the smaller the axial length of the first support member 1, the easier it is for it to extend into the hollow cavity 2.1. The end cap 3 and the first support member 1 are connected by a drive mechanism, allowing torque to be transmitted evenly to all axial positions of the second support member 2. Compared to the method where the second support member 2 bears torque at one end and then transmits the torque through itself to all axial positions, the technical solution of this application reduces the deformation of the second support member 2 when it bears the same torque as the above solution, reduces the strength requirements of the second support member 2, reduces the thickness of the second support member 2, and further reduces the manufacturing cost of the second support member 2.

[0073] Example 4:

[0074] Unlike the roller brushes in Examples 1, 2, and 3, which are removed or installed from the side of the brush housing, the roller brushes in this example are installed inside the roller brush cavity from the upper, front, or bottom part of the roller brush cavity.

[0075] Preferred, such as Figure 10 and Figure 11 As shown, the roller brush 10 is installed inside the roller brush cavity from the upper part. Specifically, the opening of the roller brush cavity faces upward, and the connecting part 23 of the housing is provided with the output end of the driving device. The housing opposite the connecting part 23 is provided with an upward-facing slot 22. During installation, the end of the roller brush away from the latch is first inserted into the roller brush cavity and connected to the output end of the driving device on the connecting part 23. Then, the latch on the other end of the roller brush is inserted along the slot to install the entire roller brush inside the roller brush cavity. The housing 20 is provided with a cover plate (not shown in the figure) to cover the upper part of the roller brush 10.

Claims

1. A surface cleaning apparatus having a mop removable roller brush comprising a housing having a roller brush chamber and a drive means, the roller brush being located within the roller brush chamber, the drive means being located within the roller brush or the housing and driving the roller brush to rotate to wipe a surface to be cleaned, characterised in that, The roller brush comprises a first support, a second support and a mop, the mop is arranged on the outer surface of the second support, the second support is detachably sleeved on the first support and is limited in the circumferential direction to make the first support and the second support rotate synchronously, wherein the axial length of the first support is smaller than the axial length of the second support, one end of the first support extends into the hollow cavity of the other end of the second support and is detachably installed with the second support through the first limiting part, the output end of the driving device extends into the other end of the second support and is drivingly connected with the second support, and the other end of the first support is detachably installed with the housing through the latch.

2. The surface cleaning apparatus of claim 1 having a removable mop, wherein, One end of the second support is provided with a hollow cavity, one end of the first support extends into the hollow cavity and is drivingly connected with the side wall of the hollow cavity, and the other end of the second support is provided with an end cover, and the end cover is rotationally connected with the housing.

3. The surface cleaning apparatus of claim 2 having a detachable roller brush, wherein, The circumferential surface of the part of the first support extending into the hollow cavity is provided with a first limiting part, the circumferential wall of the hollow cavity is provided with a second limiting part matched with the first limiting part, the first limiting part and the second limiting part are matched to limit the circumferential relative movement between the first support and the second support; and / or, the end surface of the part of the first support extending into the hollow cavity is provided with a third limiting part, the end wall of the hollow cavity is provided with a fourth limiting part matched with the third limiting part, the third limiting part and the fourth limiting part are matched to limit the circumferential relative movement between the first support and the second support.

4. The surface cleaning apparatus of claim 1 having a removable mop, wherein, One end of the second support is provided with an end cover, one end of the end cover is fixedly connected with the second support, and the other end of the end cover is drivingly connected with the first support.

5. The surface cleaning apparatus of claim 1 having a removable mop, wherein, One end of the second support is provided with a detachable end cover, and the end cover is detachably connected with the first support to fix the second support on the first support.

6. The surface cleaning device having a detachable roller brush of any one of claims 1 to 5, wherein, The inner end surface of the end cover is provided with a groove, and the end part of the mop at least partially extends into the groove.

7. The surface cleaning device having a detachable roller brush of any of claims 2 to 5, wherein, The driving device is arranged in the housing, and the output end of the driving device extends into the roller brush cavity and is drivingly connected with the end cover.

8. The surface cleaning device having a detachable roller brush of any one of claims 1 to 5, wherein, The roller brush further comprises a latch, the latch is detachably connected with the housing, and the latch is rotationally connected with the other end of the first support.

9. The surface cleaning device having a detachable roller brush of any of claims 1 to 5, wherein, The mop is glued or fusion-bonded on the outer surface of the second support, or the roller brush cavity is further provided with a dirt scraping member, and the dirt scraping member is interference-fitted with the mop to scrape off dirt.

Images