Roller assembly, cleaning apparatus and cleaning system

Abstract

Provided in the present disclosure are a roller assembly, a cleaning apparatus and a cleaning system. The roller assembly comprises a housing, a roller, a rotating shaft and an end cover, wherein the housing is provided with an accommodating cavity, and the accommodating cavity is provided with an assembly portion; the roller is connected to the rotating shaft; at least one end of the rotating shaft is connected to the end cover; and the end cover is located in the assembly portion, so as to assemble the roller into the accommodating cavity. The present disclosure enables the end cover at the end of the rotating shaft to fill the assembly portion and cover and wrap around the end of the rotating shaft, so as to shield the end of the rotating shaft, such that string-like debris is prevented from being wound around the rotating shaft by means of the assembly portion to a certain extent, and the technical problem of more and more string-like debris accumulating in the roller to limit the movement of a cleaning apparatus is avoided, thereby making the roller assembly operate normally and the cleaning apparatus run normally.

Description

Roller assembly, cleaning device and cleaning system

[0001] Cross-reference to related applications

[0002] The present disclosure claims priority to and the benefit of Chinese Patent Application No. 202410733467.0, filed on June 6, 2024, and Chinese Patent Application No. 202421291253.4, filed on June 6, 2024, the contents of which are hereby incorporated by reference in their entirety. TECHNICAL FIELD

[0003] The present disclosure relates to the technical field of smart home, in particular to a roller assembly, a cleaning device and a cleaning system. BACKGROUND

[0004] In the related art, a cleaning device such as a sweeping robot travels on a surface to be cleaned by means of a roller assembly arranged at the bottom thereof during cleaning. When the roller assembly contacts a linear object such as a hair during the travel, the linear object may be wound into the inside of the roller along with the rotation of the roller, and the accumulation of the linear object over time will limit the movement of the cleaning device, thereby causing abnormal noise and jamming of the roller assembly, and affecting the normal operation of the cleaning device.

[0005] SUMMARY

[0006] The present disclosure aims to at least partially solve one of the technical problems in the related art.

[0007] To solve the above technical problems, the present disclosure provides a roller assembly, a cleaning device and a cleaning system.

[0008] The roller assembly provided by the embodiments of the present disclosure comprises a shell, the shell is provided with a containing cavity, the containing cavity is provided with a fitting part; a roller, a shaft and an end cover, the roller is connected to the shaft, at least one end of the shaft is connected with the end cover, and the end cover is positioned in the fitting part to assemble the roller into the containing cavity.

[0009] In some embodiments, the containing cavity is provided with a supporting wall, and the fitting part is arranged on the supporting wall.

[0010] In some embodiments, the containing cavity is provided with a fitting opening.

[0011] The fitting part comprises a fitting hole arranged on the inner wall of the containing cavity and a fitting channel, the fitting channel extends from the fitting opening to the fitting hole, and the end cover is positioned in the fitting hole through the fitting channel to assemble the roller into the containing cavity.

[0012] In some embodiments, the support wall has two, and the two support walls are opposite and respectively arranged on two sides of the assembly opening, and each of the support walls is provided with the assembly part;

[0013] Alternatively, the support wall has a ring structure, and the edge of the support wall forms the assembly opening, and the support wall is provided with two assembly parts opposite to each other.

[0014] In some embodiments, at least part of the end cover is a non-circular structure, and at least part of the end cover is embedded in the assembly channel.

[0015] In some embodiments, the end cover is provided with a positioning part and an extension part, the positioning part is cooperatively arranged in the assembly hole, and the two extension parts are connected to the circumferential side of the positioning part and abut against the two opposite side walls of the assembly channel.

[0016] In some embodiments, the roller is provided with a containing groove towards the end of the end cover;

[0017] The end cover is provided with a mounting part, and the mounting part is gap arranged in the containing groove.

[0018] In some embodiments, the roller assembly further comprises a first cleaning member connected to the circumferential side of the mounting part to clean the containing groove.

[0019] In some embodiments, the end cover is further provided with a separation part connected to the mounting part.

[0020] In some embodiments, the roller assembly further comprises a labyrinth structure arranged between the separation part and the groove bottom of the containing groove.

[0021] In some embodiments, the separation part and the groove bottom of the containing groove are respectively provided with one or more ring parts, and the ring parts of the separation part and the groove bottom of the containing groove are inserted into each other to form the labyrinth structure.

[0022] In some embodiments, at least part of at least one of the adjacent two ring parts is in the form of a frustum.

[0023] In some embodiments, the circumferential surface of at least one of the ring parts is provided with a protrusion.

[0024] In some embodiments, at least part of the circumferential surface of at least one of the ring parts is in the form of a curve.

[0025] In some embodiments, the edge of the separation part is provided with the ring part, and the ring part of the edge of the separation part extends obliquely towards the side wall of the containing groove.

[0026] In some embodiments, the roller assembly further comprises a second cleaning member disposed on at least one of the ring portions.

[0027] In some embodiments, the second cleaning member is disposed on a ring portion of the isolation portion.

[0028] In some embodiments, the assembly holes are oppositely disposed in two, wherein: the assembly passages and the assembly holes are in one-to-one correspondence; or, the assembly passage is disposed in one, and the assembly passage and one of the assembly holes are in communication.

[0029] In some embodiments, at least part of the end cover is elastic.

[0030] In some embodiments, the rotating shaft and the end cover are fixedly connected, and the roller is rotatably connected to the rotating shaft.

[0031] Alternatively, the rotating shaft and the end cover are rotatably connected, and the roller is fixedly connected to the rotating shaft.

[0032] Another embodiment of the cleaning device of the present disclosure comprises: a roller assembly, which is any of the above-mentioned roller assemblies.

[0033] In some embodiments, the cleaning device further comprises a housing, and a third cleaning member is disposed on the housing to clean the attachments on the surface of the roller.

[0034] In some embodiments, the housing is provided with a containing portion, at least part of the shell of the roller assembly is disposed in the containing portion, and the third cleaning member is disposed on the inner wall of the containing portion.

[0035] In some embodiments, the third cleaning member is disposed in a gap or in contact with the roller.

[0036] Another embodiment of the cleaning system of the present disclosure comprises: a base station and a cleaning device, which is any of the above-mentioned cleaning devices, and the cleaning device and the base station are matched. BRIEF DESCRIPTION OF DRAWINGS

[0037] FIG. 1 is a perspective view of a roller assembly according to an embodiment of the present disclosure.

[0038] FIG. 2 is an exploded view of a roller assembly according to an embodiment of the present disclosure.

[0039] FIG. 3 is a perspective view of a shell in a roller assembly according to an embodiment of the present disclosure.

[0040] FIG. 4 is a perspective view of an end cover in a roller assembly according to an embodiment of the present disclosure.

[0041] Fig. 5 is a perspective view of a roller in a roller assembly according to an embodiment of the present disclosure.

[0042] Fig. 6 is an assembly view of a roller, an end cap and a first cleaning member in a roller assembly according to an embodiment of the present disclosure.

[0043] Fig. 7 is a perspective view of a first cleaning member in a roller assembly according to an embodiment of the present disclosure.

[0044] Fig. 8 is an assembly view of a first cleaning member and an end cap in a roller assembly according to an embodiment of the present disclosure.

[0045] Fig. 9 is a cross-sectional view of Fig. 6.

[0046] Fig. 10 is a schematic view of a labyrinth structure with a convex portion in a ring portion in a roller assembly according to an embodiment of the present disclosure.

[0047] Fig. 11 is a schematic view of a labyrinth structure with a curve in a ring portion in a roller assembly according to an embodiment of the present disclosure.

[0048] Fig. 12 is a perspective view of an end cap from another angle in a roller assembly according to an embodiment of the present disclosure.

[0049] Fig. 13 is an exploded view of a cleaning device according to an embodiment of the present disclosure.

[0050] Fig. 14 is a perspective view of a base station in a cleaning system according to an embodiment of the present disclosure.

[0051] Fig. 15 is a front view of a base station in a cleaning system according to an embodiment of the present disclosure.

[0052] Reference signs:

[0053] 1, housing; 11, accommodating cavity; 111, assembly opening; 112, support wall; 113, assembly portion; 1131, assembly hole; 1132, assembly passage;

[0054] 2, rotating shaft;

[0055] 3, roller; 31, accommodating groove; 32, skeleton; 33, carcass;

[0056] 4, end cap; 41, positioning portion; 42, extension portion; 43, mounting portion; 44, isolation portion;

[0057] 5, first cleaning member; 51, frame; 52, brush;

[0058] 6, labyrinth structure; 61, ring portion; 611, first ring portion; 612, second ring portion; 62, convex portion; 63, curve;

[0059] 7, second cleaning member;

[0060] 8, housing; 81, accommodating portion; 82, mounting recess;

[0061] 9, third cleaning member;

[0062] 10, roller assembly; 20, base station; 30, cleaning device. DETAILED DESCRIPTION

[0063] Embodiments of the present disclosure are described in detail below with reference to the accompanying drawings. The embodiments described below by reference to the accompanying drawings are exemplary and are intended to explain the present disclosure, and cannot be understood as a limitation of the present disclosure.

[0064] In the related art, a roller assembly of a cleaning device such as a sweeping robot includes a housing, a roller, and a rotating shaft. The housing is provided with an accommodating cavity, the accommodating cavity is provided with a mounting opening, and the accommodating cavity is provided with a mounting portion. The mounting portion includes a mounting channel that is in communication with the mounting opening. The roller is connected to the rotating shaft, and the rotating shaft is pushed into and positioned in the mounting portion through the mounting channel to assemble the roller in the accommodating cavity of the housing. Since the mounting channel of the accommodating cavity is in communication with the mounting opening of the accommodating cavity, the gap between the roller and the mounting portion of the accommodating cavity is too large. When the roller of the roller assembly contacts a linear object during the movement of the cleaning device, the linear object will be wound between the rotating pair formed by the roller and the rotating shaft through the above-mentioned gap. With the accumulation of time, the linear object in the roller will increase, which will limit the movement of the cleaning device, and further cause abnormal noise and jamming of the roller assembly, affecting the normal operation of the cleaning device.

[0065] Based on the above technical problem, the present disclosure provides a roller assembly 10, which aims to at least partially avoid the phenomenon of winding the linear object into the roller, so that the roller assembly and the cleaning device 30 can operate normally.

[0066] In combination with FIGS. 1-3, the present disclosure provides a roller assembly 10, which includes a housing 1, a roller 3, a rotating shaft 2, and an end cover 4. The housing 1 is provided with an accommodating cavity 11, the accommodating cavity 11 is provided with a mounting portion 113, the roller 3 is connected to the rotating shaft 2, at least one end of the rotating shaft 2 is connected to the end cover 4, and the end cover 4 is positioned in the mounting hole 1131 through the mounting channel 1132 to assemble the roller 3 into the accommodating cavity 11.

[0067] The roller assembly 10 provided by the present disclosure, since the roller 3 of the roller assembly 10 is connected to the rotating shaft 2, at least one end of the rotating shaft 2 is connected with the end cover 4, the end cover 4 is positioned in the assembly part 113 to assemble the roller into the containing cavity 11 of the shell 1, so that the end cover 4 at the end of the rotating shaft 2 fills the assembly part 113 and covers the end of the rotating shaft 2, thereby shielding the end of the rotating shaft 2, and to some extent avoiding the line-shaped object from being wound on the rotating shaft 2 through the assembly part 113, so as to avoid the technical problem that more and more line-shaped objects are accumulated in the roller 3 to limit the movement of the cleaning device 30, so that the roller assembly 10 works normally and the cleaning device 30 operates normally.

[0068] In combination with FIG. 3, in some embodiments, the containing cavity 11 of the shell 1 is provided with an assembly opening 111 and two opposite support walls 112, the two support walls 112 are respectively arranged on both sides of the assembly opening 11, and each support wall 112 is provided with the above-mentioned assembly part 113, the rotating shaft with the roller is pushed into the assembly part 113 of the support wall 112 from the assembly opening 111 to assemble the roller to the two support walls 11 of the containing cavity. According to another embodiment of the present application, the support wall 112 of the containing cavity 11 of the shell 1 can also be a ring structure, and the two assembly parts 113 on the support wall 112 are oppositely arranged.

[0069] In combination with FIGS. 1-3, in some embodiments, the assembly part 113 includes an assembly hole 1131 arranged on the support wall 112 of the containing cavity 11 and an assembly channel 1132 extending from the assembly opening 111 to the assembly hole 1131, the roller 3 is connected to the rotating shaft 2, at least one end of the rotating shaft 2 is connected with the end cover 4, and the end cover 4 is positioned in the assembly hole 1131 through the assembly channel 1132 to assemble the roller 3 into the containing cavity 11.

[0070] In combination with FIGS. 1-3, in some embodiments, both of the two support walls 112 can be provided with the assembly channel 1132, and both ends of the rotating shaft 2 are connected with the end cover 4. The same side assembly hole 1131 is filled by the end cover 4 and covers the same side end of the rotating shaft 2 to shield the same side end of the rotating shaft 2, thereby to some extent avoiding the line-shaped object from being wound on the rotating shaft 2 through the assembly channel 1132, so as to avoid the technical problem that more and more line-shaped objects are accumulated in the roller 3 to limit the movement of the cleaning device 30, so that the roller assembly 10 works normally and the cleaning device 30 operates normally.

[0071] In combination with FIGS. 1-3, in some embodiments, the assembly channel 1132 can be provided only on one support wall 112, and at least a portion of the end cap 4 positioned into the assembly hole 1131 through the assembly channel 1132 can be elastic, for example, the end cap 4 can be made of elastic material such as rubber. In a specific implementation, the end cap 4 connected to one end of the rotating shaft 2 is assembled into the assembly channel 1132, and the end cap 4 is compressed, so that the other end of the rotating shaft 2 abuts against the same side support wall 112, and the roller 3 is pushed into the accommodating cavity 11. The end cap 4 moves in the assembly channel 1132 until it is assembled into the assembly hole 1131 of the same side support wall 112. Meanwhile, the other end of the rotating shaft 2 moves along the same side support wall 112 until it moves into the assembly hole 1131 of the same side support wall 112. The end cap 4 is reset, and the other end of the rotating shaft 2 is forced to be assembled into the assembly hole 1131 of the same side support wall 112. In this way, the rotating shaft 2 with the roller 3 assembled can be assembled in place. In this embodiment, since only one assembly channel 1132 is provided, the gap between the roller 3 and the support wall 112 can be further reduced to avoid the linear object being wound on the rotating shaft 2 through the assembly channel 1132, so that the roller assembly 10 can work normally, and the cleaning device 30 can operate normally.

[0072] Hereinafter, the connection structure of the rotating shaft 2, the end cap 4 and the accommodating cavity 11 will be further described by taking an example in which the assembly channel 1132 is provided on both support walls 112 of the accommodating cavity 11, and in combination with FIGS. 1-4.

[0073] In combination with FIGS. 1-3, in some embodiments, the shell 1 can have a columnar structure, and the accommodating cavity 11 and the roller 3 can have a matching shape. The length of the assembly opening 111 of the accommodating cavity 11 and the distance between the two support walls 112 of the accommodating cavity 11 are slightly greater than the axial length of the roller 3, so that the roller 3 can be arranged in the accommodating cavity 11 with a gap, and the roller 3 can rotate relatively in the accommodating cavity 11. In addition, the outer surface of the roller 3 protrudes from the assembly opening 111 to contact the surface to be cleaned, so that the roller assembly 10 can travel on the surface to be cleaned.

[0074] In combination with FIG. 3, the support wall 112 of the accommodating cavity 11 can be a plane, and the assembly hole 1131 can be circular. The assembly channel 1132 extends from the assembly opening 111 to the assembly hole 1131 towards the circumferential side of the assembly opening 111 to shorten the path of the assembly hole 1131. The width of the assembly channel 1132 can be slightly smaller than the diameter of the assembly hole 1131, and the end cap 4 is provided in the assembly channel 1132 in an interference fit. During the process of pushing the end cap 4 from the assembly channel 1132 into the assembly hole 1131, the end cap 4 is compressed in the assembly channel 1132. After at least a portion of the end cap 4 is pushed into the assembly hole 1131, at least a portion of the end cap 4 recovers the deformation, and since the width of the assembly channel 1132 is smaller than the diameter of the assembly hole 1131, the end cap 4 can be limited in the assembly hole 1131.

[0075] In combination with FIGS. 3 and 4, in some embodiments, at least part of the end cover 4 can be a non-circular structure, which is embedded in the assembly channel 1132 so that the end cover 4 can be fixedly assembled in the assembly hole 1131 of the support wall 112.

[0076] In combination with FIGS. 3 and 4, in some embodiments, the end cover 4 is provided with a positioning portion 41 and two extension portions 42, the positioning portion 41 is cooperatively arranged in the assembly hole 1131, and the two extension portions 42 are connected to the circumferential side of the positioning portion 41 and abut against the two opposite side walls of the assembly channel 1132. The positioning portion 41 can be a circular ring structure cooperatively arranged with the assembly hole 1131, and the extension portion 42 can be a plate-shaped structure, one end of which is integrally connected to the circumferential side of the positioning portion 41, and the other end extends away from the positioning portion 41. The distance between the one ends of the two extension portions 42 is less than the distance between the other ends of the two extension portions 42, so that the two extension portions 42 are approximately in a V-shaped structure, and the other ends of the two extension portions 42 are in a propped-up posture to support and abut against the two side walls of the positioning channel, so that the end cover 4 is relatively fixed in the assembly hole 1131 of the support wall 112. According to an embodiment of the present application, the positioning portion 41 can also be a block-shaped structure, which can be arranged in the assembly channel 1132 in a clearance fit or interference fit, and the technical effect of relatively fixing the end cover 4 in the assembly hole 1131 of the support wall 112 can also be achieved.

[0077] In the above technical solution, although the end cover 4 can reduce the gap between the roller 3 and the support wall 112 to some extent, since the roller 3 is rotatably arranged in the accommodating cavity 11, there must be a gap between the roller 3 and the end cover 4. During the movement of the roller assembly 10, the line-shaped object wound by the roller 3 can still enter the rotating pair formed by the roller 3 and the rotating shaft 2 through the gap, and with the accumulation of time, the line-shaped object in the roller 3 will increase, which will also limit the movement of the roller assembly 10 and the cleaning device 30. Based on this, the roller assembly 10 is further improved in combination with FIGS. 5 to 8.

[0078] In combination with FIG. 4 and FIG. 5, in some embodiments, the roller 3 is provided with a receiving groove 31 at the end of the end cover 4, and the end cover 4 is provided with a mounting portion 43 which is gap-arranged in the receiving groove 31. FIG. 6 shows an assembly schematic view of the first cleaning piece. In combination with FIG. 6, the first cleaning piece 5 is further connected on the peripheral side of the mounting portion 43 to clean the receiving groove 31. Since the mounting portion 43 is relatively fixedly arranged in the receiving cavity 11 of the housing 1, the mounting portion 43 and the first cleaning piece 5 connected on the peripheral side of the mounting portion 43 are also fixedly arranged relative to the receiving cavity 11. In the process of the roller assembly 10 running, the roller 3 continuously rotates, and the linear object wound on the roller 3 enters the roller 3 through the gap between the roller 3 and the mounting portion 43 of the end cover 4. The roller 3 inside the receiving groove 31 can be cleaned by the first cleaning piece 5. Since the first cleaning piece 5 is fixedly arranged relative to the receiving cavity 11, the first cleaning piece 5 rotates relative to the roller 3, and the linear object cleaned by the first cleaning piece 5 cannot rotate with the roller 3, thereby making the linear object fall off from the roller 3, so as to improve the phenomenon that the linear object is wound between the roller 3 and the rotating pair of the shape of the rotating shaft 2 due to the rotation of the roller 3, so as to avoid the phenomenon that the roller assembly 10 produces abnormal sound and is stuck, so as to make the roller assembly 10 and the corresponding cleaning equipment 30 normally operate, which has good practicability.

[0079] In combination with FIG. 4 to FIG. 6, in some embodiments, the mounting portion 43 can be an annular structure which can be coaxially and integrally formed on the positioning portion 41 of the end cover 4. The mounting portion 43 can be attached or gap-attached on the inner side of the supporting wall 112 of the receiving cavity 11, and the radius size thereof can be greater than the radius size of the positioning portion 41 of the end cover 4.

[0080] In combination with FIG. 5, in some embodiments, the roller 3 can include a skeleton 32 and a tire body 33. The skeleton 32 is connected to the rotating shaft 2, and the receiving groove 31 is arranged at the end of the skeleton 32. The tire body 33 is connected to wrap the skeleton 32, and the tire body 33 extends out of the assembly opening 111 of the receiving cavity 11 to contact the ground to be cleaned, so as to drive the roller assembly 10 to run on the cleaned ground.

[0081] In combination with FIG. 6 and FIG. 7, in some embodiments, the first cleaning piece 5 can include a frame body 51 and a brush 52. The frame body 51 can be assembled on the mounting portion 43 in a manner of interference fit, key connection, clamping or adhesion, etc. The brush 52 is connected on the peripheral side of the frame body 51, and the first cleaning piece 5 formed by the brush 52 and the frame body 51 can be a prefabricated piece which can be directly assembled on the mounting portion 43 of the end cover 4 on site, which is convenient and fast.

[0082] In combination with FIG. 8, in some embodiments, the end cover 4 is further provided with a separation portion 44 connected to the mounting portion 43 and arranged between the first cleaning member 5 and the bottom of the accommodating groove 31. That is, the separation portion 44 is arranged at the inner side of the first cleaning member 5 to separate the first cleaning member 5 and the bottom of the accommodating groove 31. During the travel of the roller assembly 10, the first cleaning member 5 sweeps the linear objects on the accommodating groove 31 of the roller 3, and due to the presence of the separation portion 44, the linear objects swept by the first cleaning member 5 will not move towards the bottom of the accommodating groove 31 of the roller 3 but will move towards the supporting wall 112 of the housing 1. Since the housing 1 and the end cover 4 are relatively fixed, the linear objects are not easy to be wound on the housing 1 and the end cover 4 and will automatically fall off along with the travel of the roller assembly 10. Even if the linear objects are wound on the housing 1 and the end cover 4, since the linear objects do not enter between the rotating pair formed by the rotating shaft 2 and the roller 3, the normal operation of the roller assembly 10 will not be affected. In specific implementation, the separation portion 44 can be a ring-shaped plate structure integrally connected to the side of the mounting portion 43 facing the bottom of the accommodating groove 31 of the roller 3, and the radius dimension thereof is preferably greater than the radius dimension of the first cleaning member 5 so that the axial projection of the first cleaning member 5 falls on the separation portion 44, thereby effectively preventing the linear objects swept by the first cleaning member 5 from moving towards the bottom of the accommodating groove 31 of the roller 3.

[0083] Further, in order to make the roller 3 of the roller assembly 10 rotate smoothly, the separation portion 44 can be arranged in the accommodating groove 31 with a gap, and the gap can be about 5 mm, so that during the travel of the roller assembly 10, the separation portion 44 has a gap with the side wall of the accommodating groove 31 and to some extent avoids the linear objects from entering the bottom of the accommodating groove 31 through the gap.

[0084] It can be understood that since the separation portion 44 is arranged in the accommodating groove 31 with a gap, the linear objects can still enter the bottom of the accommodating groove 31 from the gap and then enter between the rotating pair formed by the rotating shaft 2 and the roller 3. Based on this, the present disclosure is provided with a labyrinth structure 6 between the separation portion 44 and the bottom of the accommodating groove 31 to lengthen the path of the linear objects entering between the rotating pair formed by the rotating shaft 2 and the roller 3, so as to further prevent the linear objects from entering the rotating pair formed by the roller 3 and the rotating shaft 2, thereby avoiding the movement of the roller 3 being limited and further causing the phenomena of abnormal noise and jamming of the roller assembly 10. The labyrinth structure of the roller assembly 10 is further described by combining FIGS. 9 to 12.

[0085] In combination with FIG. 9, in some embodiments, one or more ring portions 61 are arranged on the opposite sides of the separation portion 44 and the bottom of the accommodating groove 31, and the ring portions 61 on the separation portion 44 and the bottom of the accommodating groove 31 are inserted with each other to form the above-mentioned labyrinth structure 6.

[0086] In combination with FIG. 9, in some embodiments, the ring portion 61 comprises a first ring portion 611 and a second ring portion 612, and one or more first ring portions 611 can be arranged on the side of the groove bottom of the accommodating groove 31 towards the isolation portion 44, the first ring portion 611 can be integrally formed on the isolation portion 44, the outermost first ring portion 611 can be arranged at the edge of the outer circumferential surface of the isolation portion 44, and one or more second ring portions 612 can be arranged on the groove bottom of the accommodating groove 31 of the roller 3, the second ring portion 612 of the labyrinth structure 6 can be integrally formed on the framework 32 (shown in FIG. 5), and one or more first ring portions 611 and one or more second ring portions 612 are arranged in each other, i.e., forming a serpentine labyrinth structure 6, so as to prolong the path of the line-shaped object entering the rotary pair formed by the rotating shaft 2 and the roller 3, and further prevent the line-shaped object from entering the rotary pair formed by the roller 3 and the rotating shaft 2.

[0087] In some embodiments, the first ring portion 611 and the second ring portion 612 are both arranged on the periphery of the rotating shaft 2, and can be annular structures arranged coaxially with the rotating shaft 2. According to another embodiment of the present application, the central axis of the first ring portion 611 and the second ring portion 612 can be eccentric to the rotating shaft 2.

[0088] In combination with FIG. 9, in some embodiments, at least one of the two adjacent ring portions 61 is in the form of a frustum, so as to further reduce the minimum distance between the two adjacent ring portions 61, and further prevent the line-shaped object from entering the rotary pair formed by the roller 3 and the rotating shaft 2 through the gap between the ring portions 61. In specific implementation, the first ring portion 611 arranged on the isolation portion 44 can be in the form of an annular structure, and at least one of the second ring portions 612 arranged on the groove bottom of the accommodating groove 31 is in the form of a frustum. Alternatively, at least one of the first ring portions 611 arranged on the isolation portion 44 is in the form of a frustum, and the second ring portion 612 arranged on the groove bottom of the accommodating groove 31 is in the form of an annular structure; or both the first ring portion 611 arranged on the isolation portion 44 and the second ring portion 612 arranged on the groove bottom of the accommodating groove 31 are in the form of a frustum, and under this condition, the two adjacent ring portions 61 can form a group, and in the two ring portions 61 of the group, the top end of one ring portion 61 extends towards the bottom end of the other ring portion 61, so as to further reduce the minimum distance between the two adjacent ring portions 61, and further prevent the line-shaped object from entering the rotary pair formed by the roller 3 and the rotating shaft 2 through the gap between the ring portions 61.

[0089] In some embodiments, at least one of the two adjacent ring portions 61 can be provided with a protrusion 62 on the circumferential surface thereof, and the two protrusions 62 can be close to each other (as shown in FIG. 10), or at least one of the two adjacent ring portions 61 can be provided with a curve 63 on the circumferential surface thereof, and the two curves 63 can be close to each other (as shown in FIG. 11), or the like, so as to further reduce the minimum distance between the two adjacent ring portions 61, thereby further preventing the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2 through the gap between the ring portions 61, which is not limited herein.

[0090] In some embodiments, in order to further prevent the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2 through the above-mentioned labyrinth mechanism, a second cleaning member 7 (not shown in the figure) can be arranged on at least one of the ring portions 61, so as to sweep the linear object entering the labyrinth structure 6, thereby preventing the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2 through the above-mentioned labyrinth mechanism.

[0091] Further, since the end cover 4 is arranged in a relatively fixed manner with respect to the housing 1, the second cleaning member 7 is preferably arranged on the ring portion 61 on the isolation portion 44, so that the second cleaning member 7 rotates relative to the roller 3, and the linear object swept by the second cleaning member 7 cannot be wound into the gap between the rotating pair formed by the roller 3 and the rotating shaft 2 along with the rotation of the roller 3.

[0092] Further, the second cleaning member 7 can also be arranged on the ring portion 61 on the bottom of the accommodating groove 31. The structure and assembly of the second cleaning member 7 can refer to those of the first cleaning member 5, which is not repeated herein.

[0093] In combination with FIGS. 9 and 12, in some embodiments, the edge of the isolation portion 44 can be provided with a ring portion 61 extending obliquely towards the side wall of the accommodating groove 31, so as to further reduce the gap between the isolation portion 44 and the side wall of the accommodating groove 31, thereby further preventing the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2 through the gap between the ring portions 61. In addition, the ring portion 61 can also be provided with the above-mentioned protrusion 62 or curve 63, which can further reduce the gap between the isolation portion 44 and the side wall of the accommodating groove 31, thereby further preventing the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2 through the gap between the ring portions 61.

[0094] It can be understood that the roller assembly 10 provided by the present disclosure can avoid the linear object from being wound on the rotating shaft 2 through the assembly channel 1132 to a certain extent, and if the linear object enters the accommodating groove 31 of the roller 3, the linear object entering the roller 3 can be cleaned by the first cleaning piece 5. Due to the existence of the isolation portion 44, the linear object cleaned by the first cleaning piece 5 will not move toward the groove bottom of the accommodating groove 31, but will only move toward the supporting wall 112 of the housing 1. Since the housing 1 and the end cover 4 are not rotating, the linear object is not easy to be wound on the housing 1 and the end cover 4, and will automatically fall off along with the movement of the roller assembly 10. Even if the linear object is wound on the housing 1 and the end cover 4, since the linear object does not enter the rotating pair formed by the rotating shaft 2 and the roller 3, the normal operation of the roller assembly 10 will not be affected. If there is a linear object that cannot be cleaned by the first cleaning piece 5, the linear object will enter the labyrinth structure 6 formed between the isolation portion 44 and the groove bottom of the accommodating groove 31, so as to prolong the path of the linear object entering the rotating pair formed by the rotating shaft 2 and the roller 3, and also prevent the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2. In addition, the second cleaning piece 7 in the labyrinth structure 6 can clean the accommodating cavity of the rotatable roller 3, which can further prevent the linear object from entering the rotating pair formed by the roller 3 and the rotating shaft 2, so as to avoid the movement of the roller 3 being limited, and further avoid the phenomenon of abnormal noise and jamming of the roller assembly 10, so as to improve the reliability of the operation of the roller assembly 10.

[0095] In combination with FIGS. 2, 9 and 12, in some embodiments, the rotating shaft 2 of the roller assembly 10 is fixedly connected to the end cover 4, and the roller 3 rotates relative to the rotating shaft 2, so as to avoid the problem that the linear object enters the rotating shaft 2 and the end cover 4 to limit the rotation of the rotating shaft 2. According to another embodiment of the present application, the rotating shaft 2 can also be rotatably connected to the end cover 4, and the roller 3 is fixedly connected to the rotating shaft 2. The roller assembly 10 shown in the present application can also prevent the linear object from affecting the rotation of the roller 3 to a certain extent, and details are not repeated here.

[0096] As shown in FIG. 13, according to the embodiment of the present disclosure, a cleaning device 30 is provided, which comprises the above-mentioned roller assembly 10.

[0097] It can be understood that the cleaning device 30 with the above-mentioned roller assembly 10 can avoid the linear object from being wound on the rotating shaft 2 of the roller assembly 10 to a certain extent, so as to avoid the technical problem that more and more linear objects are accumulated in the roller 3 to limit the movement of the cleaning device 30, so as to enable the roller assembly 10 to work normally and the cleaning device 30 to operate normally.

[0098] It should be noted that the cleaning device 30 can be a sweeping robot, and can also be other cleaning devices 30 with walking function, such as a mopping machine or a sweeping machine, and the like, which are not limited here.

[0099] In the related art, the surface of the rollers on the roller assembly 10 can accumulate hard particles such as dust and stones during the driving of the cleaning device 30, which can scratch the floor. Based on this, the cleaning device 30 shown in the present application also has a self-cleaning function to remove the hard particles such as dust and stones accumulated on the surface of the rollers when the cleaning device 30 is driven, so as to improve the phenomenon of scratching the floor, which has good practicability. The specific details of the self-cleaning function of the cleaning device 30 are further described by referring to FIG. 13.

[0100] In combination with FIG. 13, in some embodiments, the cleaning device 30 further comprises a shell 8, and a third cleaning member 9 is arranged on the shell 8. The third cleaning member 9 can clean the attachments on the surface of the rollers 3, such as the hard particles such as dust and stones accumulated on the tire body 33 of the rollers 3, so as to avoid the attachments on the tire body 33 of the rollers 3 from scratching the floor to a certain extent.

[0101] In combination with FIG. 13, in some embodiments, the shell 8 is provided with a receiving portion 81, at least part of the shell of the roller assembly 10 is arranged in the receiving portion 81, and the third cleaning member 9 is arranged on the inner wall of the receiving portion 81. At least part of the third cleaning member 9 is directed to the assembly opening of the receiving cavity of the shell, so as to clean the attachments on the surface of the rollers 3 in the receiving opening. In specific implementation, the battery cover portion of the shell 8 can be provided with a receiving hole configured as the receiving portion 81. The mounting recess 82 is arranged on the side wall of the receiving hole. The third cleaning member 9 has a similar structure as the first cleaning member, and both can include a frame body and a brush. The frame body of the third cleaning member 9 is assembled on the mounting recess 82 in a manner of interference fit, clamping or adhesion. The brush of the third cleaning member 9 is connected to the frame body of the third cleaning member 9. The brush of the third cleaning member 9 matches the outer shape of the rollers 3, so as to achieve good cleaning effect. The third cleaning member 9 can be a prefabricated part, which can be directly assembled on the mounting recess 82 arranged on the side wall of the receiving hole during on-site assembly, which is convenient and fast. The third cleaning member 9 can also be arranged on other parts of the shell 8. The specific adjustment can be made according to the arrangement position of the roller assembly 10, which is not limited herein.

[0102] In some embodiments, the third cleaning member 9 is arranged in a gap with the rollers 3, so as to clean the attachments with a certain thickness on the surface of the tire body 33 of the rollers 3. According to another embodiment of the present application, the third cleaning member 9 can also be in contact with the surface of the tire body 33 of the rollers 3. Since the brush of the third cleaning member 9 is a flexible part, the contact between the brush and the surface of the rollers 3 will not affect the normal operation of the roller assembly 10, and the attachments on the surface of the tire body 33 of the rollers 3 can be cleaned to the maximum extent, so as to avoid the attachments on the rollers 3 from scratching the floor.

[0103] It can be understood that the cleaning device 30 provided by the present disclosure can not only prevent the flexible linear object from winding around the rotating shaft 2 of the roller assembly 10, so that the roller assembly 10 works normally, and the cleaning device 30 works normally, but also can clean the hard attachments on the tire body 33 of the roller 33 of the roller 3 of the roller assembly 10, so as to improve the phenomenon that the attachments scratch the floor, and has good practicability.

[0104] In combination with FIGS. 13 to 15, according to the embodiment of the present disclosure, a cleaning system is provided, which comprises the base station 20 and the cleaning device 30 described above, and the cleaning device 30 cooperates with the base station 20.

[0105] In the description of the present disclosure, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "longitudinal", "radial", "circumferential" and the like indicate the orientation or positional relationship shown in the drawings, which are only for the purpose of describing the present disclosure and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present disclosure.

[0106] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" can explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "a plurality of" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0107] In the present disclosure, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances.

[0108] In the present disclosure, unless specifically stated and limited otherwise, a first feature "on" or "under" a second feature can be directly contacting the first and second features, or indirectly contacting the first and second features through an intermediate medium. Also, the first feature "over", "above" and "on top of" the second feature can be directly above or obliquely above the second feature, or simply means that the first feature is higher in horizontal level than the second feature. The first feature "under", "below" and "underneath" the second feature can be directly below or obliquely below the second feature, or simply means that the first feature is lower in horizontal level than the second feature.

[0109] In the present disclosure, the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" mean that a particular feature, structure, material or characteristic is included in at least one embodiment or example of the present disclosure. Illustrative expressions of the above terms in the present specification are not necessarily directed to the same embodiment or example. Also, the described specific features, structures, materials or characteristics can be combined in any suitable manner in any one or more embodiments or examples. In addition, different embodiments or examples described in the present specification and features of different embodiments or examples can be combined and combined by those skilled in the art without contradiction.

[0110] Although the above embodiments have been shown and described, it is to be understood that the above embodiments are exemplary, and are not to be construed as limiting the present disclosure, and changes, modifications, replacements and variations of the above embodiments made by those skilled in the art are within the scope of protection of the present disclosure.

Claims

1. A roller assembly, comprising: a housing provided with a receiving cavity, the receiving cavity being provided with a fitting portion; a roller, a rotating shaft and an end cover, the roller being connected to the rotating shaft, at least one end of the rotating shaft being connected to the end cover, the end cover being positioned in the fitting portion to fit the roller into the receiving cavity.

2. The roller assembly of claim 1, wherein, The receiving cavity is provided with a support wall, the support wall being provided with a fitting portion.

3. The roller assembly of claim 1 or 2, wherein, The receiving cavity is provided with a fitting opening. The fitting portion comprises a fitting hole provided on an inner wall of the receiving cavity and a fitting channel, the fitting channel extending from the fitting opening to the fitting hole, the end cover being positioned in the fitting hole through the fitting channel to fit the roller into the receiving cavity.

4. The roller assembly of claim 3, wherein, The support wall has two opposite support walls, each of the two support walls being provided with the fitting portion. Alternatively, the support wall has a ring structure, an edge of the support wall forming the fitting opening, and two opposite fitting portions being provided on the support wall.

5. The roller assembly of claim 3 or 4, wherein, At least a part of the end cover is a non-circular structure, and the at least a part of the end cover is embedded in the fitting channel.

6. The roller assembly of claim 5, wherein, The end cover is provided with a positioning portion and two extension portions, the positioning portion being fitted in the fitting hole, and the two extension portions being connected to a circumferential side of the positioning portion and abutting against two opposite side walls of the fitting channel.

7. The roller assembly of any one of claims 1-6, wherein, The roller is provided with a receiving groove at an end portion of the end cover. The end cover is provided with a mounting portion, the mounting portion being gap-connected in the receiving groove.

8. The roller assembly of claim 7, wherein, The roller assembly further comprises a first cleaning member connected to a circumferential side of the mounting portion to clean the receiving groove.

9. The roller assembly of claim 7, wherein, The end cover is further provided with a separation portion connected to the mounting portion.

10. The roller assembly of claim 9, wherein, The roller assembly further comprises: a labyrinth structure provided between the separation portion and a groove bottom of the receiving groove.

11. The roller assembly of claim 10, wherein, The separation portion and the groove bottom of the receiving groove are each provided with one or more ring portions, the ring portions on the separation portion and the groove bottom of the receiving groove being inserted into each other to form the labyrinth structure.

12. The roller assembly of claim 11, wherein, At least a part of at least one of the adjacent ring portions is in the shape of a frustum. And / or, a circumferential surface of at least one of the ring portions is provided with a protrusion. And / or, at least a part of a circumferential surface of at least one of the ring portions is in a curved shape.

13. The roller assembly of claim 11 or 12, wherein, An edge of the separation portion is provided with the ring portion, and the ring portion of the edge of the separation portion extends obliquely towards a side wall of the receiving groove.

14. The roller assembly of any one of claims 11-13, wherein, The roller assembly further comprises a second cleaning member provided on at least one of the ring portions.

15. The roller assembly of claim 14, wherein, The second cleaning member is provided on the ring portion of the separation portion.

16. The roller assembly of any one of claims 3-6, wherein, The fitting hole is provided with two opposite fitting holes, wherein: the fitting channel and the fitting holes are in one-to-one correspondence; or the fitting channel is provided with one fitting channel, and the fitting channel is in communication with one of the fitting holes.

17. The roller assembly of any one of claims 1-16, wherein, At least a part of the end cover is elastic.

18. The roller assembly of any one of claims 1-17, wherein, The rotating shaft and the end cover are fixedly connected, and the roller is rotatably connected to the rotating shaft. Alternatively, the rotating shaft and the end cover are rotatably connected, and the roller is fixedly connected to the rotating shaft.

19. A cleaning apparatus wherein, The cleaning apparatus comprises the roller assembly according to any one of claims 1-18.

20. The cleaning apparatus of claim 19, wherein, The cleaning apparatus further comprises a housing, and a third cleaning member is arranged on the housing to clean the adherents on the surface of the roller.

21. The cleaning apparatus of claim 20, wherein, The housing is provided with a receiving portion, and at least part of the gap of the housing of the roller assembly is arranged in the receiving portion, and the third cleaning member is arranged on the inner wall of the receiving portion.

22. The cleaning apparatus of claim 20 or 21, wherein, The third cleaning member is arranged in contact with or in contact with the gap of the roller.

23. A cleaning system wherein, Comprising: a base station; a cleaning apparatus according to any one of claims 19-22, the cleaning apparatus cooperating with the base station.

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