CN212521669U

CN212521669U - Round brush subassembly and cleaning machines people

Info

Publication number: CN212521669U
Application number: CN202021211584.4U
Authority: CN
Inventors: 陈小平; 陈超; 程狮
Original assignee: Yunmi Internet Technology Guangdong Co Ltd
Current assignee: Guangdong Lizi Technology Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-02-12
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses a rolling brush component and a cleaning robot, wherein the rolling brush component comprises a rolling brush main body, a bevel gear transmission device and a rack structure, and the rolling brush main body is provided with a cavity and a gap communicated with the cavity; the bevel gear transmission device is arranged in the cavity; at least part of the rack structure is arranged in the cavity and is provided with a plurality of sawteeth arranged along a first direction; the bevel gear transmission device is in transmission connection with the rack structure so that the rack structure can move between a first position and a second position to cut the winding on the roller brush body; when the rack structure is located at the second position, at least part of the saw teeth is protruded from the gap. Above-mentioned round brush subassembly and cleaning machines people need not the manual clearance of user and can cut the winding thing of winding in the round brush main part, guarantees the normal work of round brush subassembly.

Description

Round brush subassembly and cleaning machines people

Technical Field

The utility model relates to a cleaning device technical field especially relates to a round brush subassembly and cleaning machines people.

Background

With the improvement of living standard and the development of technology of people, the use of the sweeping robot is more and more common. The sweeping robot generally comprises a sweeping machine body and a rolling brush arranged on the sweeping machine body, wherein the rolling brush can collect and suck sundries on the ground into a garbage storage box on the sweeping machine body after rotating, so that the function of cleaning the ground is achieved. When the floor sweeping robot cleans the ground, the hair on the ground can be wound on the rolling brush, so that the problem that the rolling brush is easy to block is caused, the cleaning effect is influenced, or the motor load is increased, and the service life of the motor is influenced. Manual cleaning by the user is often required when there is a lot of hair entanglement.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a rolling brush component and a cleaning robot.

According to the utility model discloses an in the first aspect, the utility model provides a round brush subassembly for cleaning machines people, the round brush subassembly includes:

the rolling brush body is provided with a cavity and a gap communicated with the cavity;

the bevel gear transmission device is arranged in the cavity;

the rack structure is arranged in the cavity and is provided with a plurality of saw teeth arranged along a first direction; the bevel gear transmission is in transmission connection with the rack structure so that the rack structure can move between a first position and a second position to cut the winding on the roller brush body; when the rack structure is located at the second position, at least part of the saw teeth is arranged in the gap in a protruding mode.

The utility model discloses an among the round brush subassembly, the round brush main part includes: the cavity and the gap are arranged on the rod body; the brush body is arranged on the rod body.

The utility model discloses an among the round brush subassembly, bevel gear transmission can drive rack construction is along first direction reciprocating motion between primary importance and second place, first direction with the axial direction parallel of barred body.

In the rolling brush assembly of the present invention, the rod has a first free end and a second free end, and the first free end and the second free end are circumferentially spaced to form the gap; the first free end is provided with a plurality of first tooth parts arranged along a first direction, the second free end is provided with a plurality of second tooth parts arranged along the first direction, and the first tooth parts and the second tooth parts are spaced and oppositely arranged.

The utility model discloses an among the round brush subassembly, bevel gear transmission includes: the bevel gear mechanism is arranged in the cavity; the two ends of the elastic piece are respectively abutted against the rolling brush main body and the rack structure; when the rack structure moves from the first position to the second position, the rack structure can enable the elastic piece to be elastically deformed under the action of the bevel gear mechanism; the rack structure is movable from the second position to the first position under the elastic deformation force of the elastic member.

The utility model discloses an among the round brush subassembly, the round brush subassembly still includes the round brush center pin, the round brush main part is located including the cover the epaxial barred body of round brush center.

The utility model discloses an among the round brush subassembly, bevel gear mechanism includes: the bevel gear is sleeved on the central shaft of the rolling brush; and the bevel gear can be in transmission connection with the rack structure through the transmission piece.

The utility model discloses an among the round brush subassembly, the driving medium includes: the bevel gear part is in transmission connection with the bevel gear; and the straight tooth part is connected with the conical tooth part and can be in transmission connection with the rack structure.

The utility model discloses an among the round brush subassembly, straight-tooth portion includes: a cylinder connected with the bevel portion, a circumferential surface of the cylinder including a first surface region and a second surface region; and the straight teeth are arranged on the first surface area and can be in transmission connection with the rack structure.

In the utility model discloses an among the round brush subassembly, the rack construction includes: the rack fixing piece can be in transmission connection with the bevel gear mechanism; the sawtooth strip is arranged on the rack fixing piece; the saw teeth are arranged on the saw tooth strip.

According to a second aspect of the present invention, the present invention provides a cleaning robot, comprising a rolling brush driving assembly and any one of the above rolling brush assemblies; the rolling brush driving assembly is in transmission connection with the rolling brush assembly and is used for driving the rolling brush assembly to rotate.

Compared with the prior art, the utility model discloses beneficial effect lies in: through the transmission cooperation of bevel gear transmission and rack structure to make rack structure can move between primary importance and second position, cut off with twine or winding such as lines, hair of piling up in the round brush main part, reduce or prevent that the winding from twining, piling up and block the round brush main part easily in this round brush main part, need not the manual clearance of user, guaranteed the normal work of round brush subassembly.

Drawings

Fig. 1 is a schematic structural diagram of a cleaning robot provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a rolling brush assembly provided in an embodiment of the present invention;

fig. 3 is an exploded schematic view of a rolling brush assembly according to an embodiment of the present invention;

fig. 4 is a schematic view of a portion of a rolling brush assembly according to an embodiment of the present invention, wherein the rack structure is at a second position relative to the rolling brush body;

FIG. 5 is an enlarged partial schematic view of FIG. 4 at A;

fig. 6 is a schematic view of a partial structure of a rolling brush assembly according to an embodiment of the present invention, wherein the rack structure is at a first position relative to the rolling brush body;

FIG. 7 is a schematic view of an angle part of a rolling brush assembly according to an embodiment of the present invention, wherein the brush body and the outer sleeve are not shown;

fig. 8 is a partial schematic structural view of another angle of the rolling brush assembly according to the embodiment of the present invention, wherein the brush body and the outer sleeve portion are not shown;

fig. 9 is a schematic structural view of a bevel gear according to an angle provided by an embodiment of the present invention;

fig. 10 is a schematic structural view of another angle of the bevel gear according to the embodiment of the present invention;

fig. 11 is a schematic view of an angle structure of a transmission member according to an embodiment of the present invention;

FIG. 12 is a schematic view of another angle of the transmission member according to the embodiment of the present invention;

fig. 13 is a schematic structural diagram of a rack structure according to an embodiment of the present invention;

fig. 14 is a schematic structural diagram of a rack fixing member according to an embodiment of the present invention.

In the figure: 1000. a cleaning robot;

10. a roll brush assembly;

100. a roll brush body; 110. a cavity; 120. a gap; 130. a rod body; 131. an outer race section; 132. an inner jacket portion; 1321. a first sub-section; 1322. a second sub-section; 140. a brush body; 150. a first tooth portion; 160. a second tooth portion; 170. a positioning column;

200. a bevel gear transmission; 210. a bevel gear mechanism; 211. a bevel gear; 212. a transmission member; 2121. a bevel gear part; 2122. a straight tooth portion; 2123. a cylinder; 2124. straight teeth; 2125. a first surface region; 2126. a second surface region; 213. a locking member; 220. an elastic member;

300. a rack structure; 310. a rack fixing member; 311. a transmission matching part; 312. positioning a groove; 313. a position avoiding part; 314. an abutting portion; 320. a sawtooth strip; 321. saw teeth;

400. a central shaft of the rolling brush;

510. a first bearing; 520. a second bearing;

20. a housing; 201. and (4) opening.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

Referring to fig. 1, an embodiment of the present invention provides a cleaning robot 1000, where the cleaning robot 1000 includes a rolling brush assembly 10 and a rolling brush driving assembly (not shown). The rolling brush driving assembly is in transmission connection with the rolling brush assembly 10 and is used for driving the rolling brush assembly 10 to rotate.

The brush drive assembly may be any suitable drive structure, such as a motor or the like.

Specifically, the cleaning robot 1000 further includes a housing 20, and the drum brush driving assembly and the drum brush assembly 10 are mounted on the housing 20. More specifically, the housing 20 is provided with an opening 201, and the brush body 140 of the roll brush assembly 10 can protrude from the opening 201 to facilitate the cleaning work of the floor.

Referring to fig. 2 to 8, the brush roll assembly 10 includes a brush roll body 100, a bevel gear assembly 200, and a rack gear structure 300. The brush roll body 100 has a cavity 110 and a slit 120 communicating with the cavity 110. The bevel gear drive 200 and at least a portion of the rack structure 300 are disposed within the cavity 110. The rack structure 300 has a plurality of saw teeth 321 arranged in a first direction. The bevel gear transmission 200 is drivingly connected to the rack gear structure 300 such that the rack gear structure 300 is movable between a first position and a second position to cut the windings on the roll brush body 100.

When the rack structure 300 is located at the second position, at least a portion of the saw teeth 321 protrudes from the gap 120. Thus, on one hand, the sawtooth 321 can be prevented from being shielded by the rolling brush main body 100 or the rod 130 to be difficult to cut hair normally; on the other hand, the protrusion of at least a portion of the saw teeth 321 in the gap 120 can also limit the relative movement of the rack structure 300 in the circumferential direction of the roller brush body 100 or the rod 130.

The rolling brush assembly 10 in the above embodiment is configured to cooperate with the rack structure 300 through the bevel gear 200, so that the rack structure 300 can move between the first position and the second position to cut off the winding objects such as lines, hairs, etc. wound or accumulated on the rolling brush main body 100, thereby reducing or preventing the winding objects from winding or accumulating on the rolling brush main body 100 to easily block the rolling brush main body 100, without manual cleaning by a user, and ensuring normal operation or continuous operation of the rolling brush assembly 10. In addition, since the rack structure 300 can timely cut off the winding wound on the drum brush main body 100, it is possible to prevent the cleaning robot 1000 from alarming or causing the drum brush driving assembly (e.g., motor) to be damaged by an overload caused by the cleaning robot 1000 being stuck by the hair during the operation, thereby extending the life span of the cleaning robot 1000 or the drum brush driving assembly.

It will be appreciated that the first position is an initial position of the rack gear structure 300 with respect to the roll brush body 100, as shown in fig. 6. The second location is different from the first location, and the second location may include a plurality. For example, the first position is one of the extreme positions of the rack structure 300; the second position may be another extreme position of the rack gear structure 300 with respect to the roll brush body 100, as shown in fig. 4 or 5. The second position may also be any suitable position between the first position and the other extreme position.

In some embodiments, the bevel gear assembly 200 is capable of reciprocating the rack structure 300 in a first direction between a first position and a second position. The first direction is parallel to the axial direction of the rod 130. Illustratively, the first direction is the X direction in fig. 4. When the bevel gear transmission 200 is operated, the rack gear 300 is continuously linearly reciprocated in the first direction, so that entanglement of lines, hairs, etc. wound on the drum brush body 100 can be cut.

The roll brush main body 100 includes a rod 130 and a brush body 140. The cavity 110 and the slit 120 are provided on the rod 130. The brush body 140 is provided on the rod body 130. It can be understood that the top ends of the saw teeth 321 are lower than the top end of the brush body 140, so that the saw teeth 321 do not contact the ground after the brush body 140 is deformed during the cleaning process, and the rack structure 300 is prevented from scratching the ground.

In some embodiments, to facilitate cleaning, brush body 140 is typically made of a plastic material that is easily deformable. The rod 130 is made of a rigid material, so that the rod 130 is easily deformed during rotation, and the brush 140 can be sufficiently contacted with the ground. Illustratively, the brush body 140 may be a bristle. The bristles are arranged on the rod 130 in a spiral or linear shape. In other embodiments, brush body 140 may also be a brush blade, such as a flexible brush blade of rubber or the like. Of course, the brush body 140 may also be a combination of bristles and a brush piece, and is not limited herein.

In some embodiments, the body 130 has a first free end and a second free end, the first free end and the second free end being circumferentially spaced apart to form the gap 120; the first free end is provided with a plurality of first tooth parts 150 arranged along the first direction, the second free end is provided with a plurality of second tooth parts 160 arranged along the first direction, and the first tooth parts 150 and the second tooth parts 160 are spaced and oppositely arranged.

Illustratively, serrations 321 are provided between first tooth 150 and second tooth 160. The first tooth portion 150 and the second tooth portion 160 remain stationary with respect to the brush main body 100, i.e., the first tooth portion 150 and the second tooth portion 160 do not move arbitrarily in the first direction. In this way, the saw teeth 321 reciprocate in the first direction with respect to the first tooth portion 150 and the second tooth portion 160, and a scissor structure, which can cut the wound object, can be formed between the saw teeth 321 and the first tooth portion 150, between the saw teeth 321 and the second tooth portion 160, and between the saw teeth 321 and the second tooth portion 160. In addition, the first tooth portion 150 and the second tooth portion 160 can also enable the winding to be tensioned or pulled tightly, so that the winding is conveniently and rapidly cut by the saw teeth 321 of the rack structure 300, and the efficiency of cleaning the winding is further improved.

The number of the saw teeth 321, the first tooth portion 150 and the second tooth portion 160 of the rack structure 300 can be set according to actual requirements, and the more the number of the saw teeth 321, the first tooth portion 150 and the second tooth portion 160 is, the more the quick cutting of the winding is facilitated.

In some embodiments, the rod 130 may also be formed by assembling at least two structures independently. In other embodiments, the rod 130 may be a unitary structure, which forms the gap 120 for allowing the saw teeth 321 of the rack structure 300 to be exposed from the cavity 110, and is not limited herein.

Referring to FIG. 3, in some embodiments, the barrel 130 includes an outer sleeve portion 131 and an inner sleeve portion 132. The outer sleeve portion 131 is fixedly sleeved outside the inner sleeve portion 132. Thus, the outer sleeve portion 131 and the inner sleeve portion 132 can be made of different materials to meet their respective functional requirements. For example, the inner sleeve 132 is made of a rigid material, such as a metal material or a non-deformable plastic material; outer sheath 131 may be formed of a deformable material, such as nylon, in conjunction with brush body 140 to facilitate forming brush body 140.

It will be appreciated that in some embodiments, the outer and

inner sleeve portions

131, 132 may each include two separate portions mounted in opposition and spaced apart to form the gap 120 described above. Referring to fig. 3 and 8, the inner housing portion 132 illustratively includes a first sub-portion 1321 and a second sub-portion 1322. The first sub-portion 1321 can be connected to the second sub-portion 1322 by a snap connection, a screw fastening connection, or the like. The first sub-portion 1321 and the second sub-portion 1322 form a gap which cooperates with a slot (not shown) of the outer race portion 131 to form the slit 120. In other embodiments, the inner sleeve portion 132 may be integrally formed with a gap formed therein. The outer sleeve portion 131 may be integrally formed and have a slot, and the slot of the outer sleeve portion 131 corresponds to the gap of the inner sleeve portion 132 to form the gap 120, which is not limited herein.

The outer sleeve portion 131 may be fixedly connected to the inner sleeve portion 132 by any suitable fixing means, such as adhesive bonding or pressing by thermal compression.

Illustratively, both the outer jacket portion 131 and the inner jacket portion 132 extend in a first direction.

In some embodiments, when the rack structure 300 is located at the first position, at least a portion of the saw teeth 321 is protruded from the gap 120, and the first tooth portion 150 and/or the second tooth portion 160 can circumferentially shield the saw teeth 321, so as to avoid the problem that the saw teeth 321 are exposed to the roller brush body 100 when the cleaning robot 1000 is not used, and thus the cleaning robot 1000 may be accidentally injured by children or users, and safety of the cleaning robot 1000 may be improved. When the rack structure 300 is located at the second position, at least a portion of the saw teeth 321 protrudes from the gap 120, and the saw teeth 321 and the first tooth portion 150 are disposed in a staggered manner, so that at least one of the saw teeth 321, the first tooth portion 150, and the second tooth portion 160 can cut a winding when the brush roller assembly 10 is in operation.

Referring to fig. 3 and 4, in some embodiments, the bevel gear assembly 200 includes a bevel gear mechanism 210 and an elastic member 220. The bevel gear 211 is disposed in the chamber 110. Both ends of the elastic member 220 abut against the roller brush body 100 and the rack structure 300, respectively. When the rack gear 300 moves from the first position to the second position, the rack gear 300 can elastically deform the elastic member 220 by the bevel gear mechanism 210. The rack gear structure 300 is movable from the second position to the first position by the elastic deformation force of the elastic member 220.

In some embodiments, the resilient member 220 is a compression spring. During the movement of the rack structure 300 from the first position to the second position, the rack structure 300 can compress the compression spring by the bevel gear mechanism 210, so that the compression spring is elastically deformed. When the rack structure 300 moves to the second position, the bevel gear mechanism 210 is no longer in driving connection with the rack structure 300, and thus the rack structure 300 no longer further compresses the compression spring, and the rack structure 300 returns from the second position to the first position under the elastic deformation force of the compression spring.

In some embodiments, the elastic member 220 is an extension spring. During the movement of the rack structure 300 from the first position to the second position, the rack structure 300 can stretch the extension spring by the bevel gear mechanism 210, so that the extension spring is elastically deformed. When the rack structure 300 moves to the second position, the bevel gear mechanism 210 is no longer in driving connection with the rack structure 300, and thus the rack structure 300 does not further stretch the extension spring, and the rack structure 300 returns from the second position to the first position under the elastic deformation force of the extension spring.

Referring to fig. 3-6, in some embodiments, the roller brush assembly 10 further includes a roller brush central shaft 400. The rod 130 is sleeved outside the roller brush central shaft 400. Illustratively, the brush roll assembly 10 also includes a first bearing 510 and a second bearing 520. The inner sleeve 132 of the rod 130 is drivingly connected to the roller brush center shaft 400 through the first bearing 510 and the second bearing 520, so that the roller brush center shaft 400 can rotate along with the rod 130. In some embodiments, the first bearing 510 and the second bearing 520 are respectively disposed at both ends of the roll brush center shaft 400.

Referring to fig. 3-6 and 9-12, in some embodiments, the bevel gear mechanism 210 includes a bevel gear 211 and a transmission member 212. The bevel gear 211 is sleeved on the roller brush central shaft 400. The bevel gear 211 can be in driving connection with the rack structure 300 via a transmission 212.

Illustratively, bevel gear 211 is in driving engagement with drive member 212. When the roller brush assembly 10 works, the rod 130 drives the roller brush central shaft 400 to rotate around the axial direction of the rod 130, the bevel gear 211 on the roller brush central shaft 400 also rotates, and the transmission member 212 can drive the rack structure 300 to move between the first position and the second position along the first direction under the driving of the bevel gear 211.

Illustratively, the bevel gear 211 is in driving connection with the transmission member 212 to rotate the transmission member 212 about a predetermined axis, the predetermined axis being perpendicular to the first direction. In some embodiments, the predetermined axis is parallel to the Y direction as in fig. 4.

In some embodiments, the bevel gear 211 is integrally formed with the roller brush central shaft 400. In other embodiments, the bevel gear 211 may be provided separately from the rolling brush central shaft 400, for example, the bevel gear 211 is coupled to the rolling brush central shaft 400 by a bearing.

In some embodiments, the transmission member 212 may be secured to the roller brush central shaft 400 by a locking member 213, such as a steel shaft. The transmission member 212 is rotatable relative to the steel shaft.

Referring to fig. 11 and 12, in some embodiments, transmission member 212 includes a bevel portion 2121 and a spur portion 2122. The bevel gear part 2121 is in transmission connection with the bevel gear 211. The spur portion 2122 is connected to the bevel portion 2121. The straight teeth portion 2122 is in transmission connection with the rack structure 300. In some embodiments, the bevel gear portion 2121 is in meshing driving engagement with the bevel gear 211. The straight tooth portion 2122 is engaged with the rack structure 300 for driving.

In some embodiments, spur 2122 includes a post 2123 and spur 2124. A cylinder 2123 is connected to the awl teeth portion 2121, and a circumferential surface of the cylinder 2123 includes a first surface region 2125 and a second surface region 2126. A plurality of spur teeth 2124 are provided on first surface region 2125. A plurality of spur teeth 2124 can be drivingly connected to the rack structure 300.

Referring to fig. 3 to 6, 13 and 14, in some embodiments, the rack structure 300 includes a rack holder 310 and a rack 320. The rack mount 310 can be in driving connection with the bevel gear mechanism 210. The rack holder 310 is provided with a rack bar 320. The saw teeth 321 are provided on the saw tooth bar 320. The sawtooth rack 320 and the rack fixing member 310 may be connected by injection molding, or may be fixedly connected by a snap, a screw, or the like. Illustratively, the serrated rack 320 is made of a metal material and the rack holder 310 is made of a plastic material, which are coupled by injection molding to reduce the cost of the roll brush assembly 10.

In some embodiments, the rack holder 310 is provided with a driving engagement portion 311 for driving connection with the bevel gear mechanism 210. Specifically, the straight tooth portion 2122 of the transmission member 212 may engage with the transmission engagement portion 311 of the rack fixing member 310, so that the rack fixing member 310 can move from the first position to the second position in the first direction under the driving of the transmission member 212. The transmission engagement portion 311 is provided with a plurality of teeth in the first direction to engage with the spur portion 2122 of the transmission member 212.

In some embodiments, the spur 2124 is drivingly connected to the drive engagement portion 311 during movement of the rack structure 300 from the first position to the second position. During movement of the rack structure 300 from the second position to the first position, the spur 2124 of the spur portion 2122 disengages from the drive engagement portion 311, and the second surface region 2126 of the post 2123 is disposed opposite and spaced apart from the drive engagement portion 311.

In some embodiments, the drum brush assembly 10 cleans the floor in a rotating fashion while the cleaning robot 1000 is operating. In some embodiments, the brush body 100 and the rack structure 300 of the brush module 10 collectively rotate with respect to the axial direction of the brush body 100. Illustratively, the rack structure 300 is positioned on the rod 130 by means of the positioning groove 312 and the positioning column 170, and the rack structure 300 and the roller brush main body 100 can synchronously rotate relative to the axial direction of the rod 130, and simultaneously realize the rotating cleaning function and the winding cutting function.

In some embodiments, the rack holder 310 is provided with a positioning groove 312, the inner sleeve portion 132 of the roller brush main body 100 is provided with a positioning column 170 matching with the positioning groove 312, and a dimension of the positioning groove 312 along the first direction is greater than a dimension of the positioning column 170 along the first direction. Thus, the positioning groove 312 and the positioning post 170 can position the rack fixing member 310 in the inner sleeve portion 132. In addition, since the size of the positioning slot 312 in the first direction is larger than the size of the positioning column 170 in the first direction, the positioning column 170 can move in the length direction of the positioning slot 312, i.e., in the first direction, so that the rack structure 300 moves between the first position and the second position to provide a moving space.

In some embodiments, the rack fixing member 310 is further provided with a space-avoiding portion 313 for avoiding the bevel gear 211. Illustratively, the avoiding portion 313 is a groove structure or a notch structure. Illustratively, the avoiding portion 313 is on the same side of the rack fixing member 310 as the transmission matching portion 311. Illustratively, the clearance portion 313 is disposed adjacent to the drive mating portion 311.

In some embodiments, one end of the rack fixture 310 is provided with an abutting portion 314 for abutting one end of the elastic member 220.

Illustratively, the rack fixing member 310 and the inner sleeve 132 cooperate to form a limiting hole, and the elastic member 220 is disposed through the limiting hole and abuts against the abutting portion 314. The limiting hole can limit the radial movement of the elastic member 220 along the limiting hole.

In some embodiments, the resilient member 220 is in a natural state when the rack structure 300 is in the first position. It is understood that when the rack structure 300 is located at the first position, the straight tooth portion 2122 of the transmission member 212 may or may not contact the transmission matching portion 311 of the rack fixing member 310, and is not limited herein.

When the transmission member 212 rotates by a first predetermined angle with respect to the predetermined axis, the straight tooth portion 2122 of the transmission member 212 engages with the transmission engagement portion 311 of the rack fixing member 310. At this time, the transmission member 212 continuously rotates in the same direction by a second predetermined angle relative to the predetermined shaft, the straight tooth portion 2122 of the transmission member 212 and the transmission matching portion 311 of the rack fixing member 310 are engaged with each other during the rotation process, the transmission member 212 can drive the rack fixing member 310 to move from the first position to the second position, and the rack fixing member 310 can elastically deform the elastic member 220. When the rack fixing member 310 is located at the second position, the transmission member 212 continuously rotates in the same direction by a third predetermined angle with respect to the predetermined axis, the straight tooth portion 2122 of the transmission member 212 and the transmission matching portion 311 of the rack fixing member 310 are not engaged and separated from each other during the rotation, and the rack fixing member 310 returns from the second position to the first position under the elastic deformation force of the elastic member 220. The first preset angle, the second preset angle and the third preset angle can be designed into any suitable angle according to actual requirements, and the sum of the first preset angle, the second preset angle and the third preset angle is 360 degrees. For example, the first predetermined angle is zero degrees. The second preset angle is 180 degrees, and the third preset angle is 180 degrees.

When the transmission member 212 rotates a circle in a preset rotation manner, the rack fixing member 310 can drive the sawtooth rack 320 to move between the first position and the second position, so as to cut off winding objects such as lines, hairs and the like wound or accumulated on the roller brush main body 100, reduce or prevent the winding objects from winding or accumulating on the roller brush main body 100 and easily block the roller brush main body 100, so that the roller brush main body 100 is not required to be manually cleaned by a user, the normal operation of the roller brush assembly 10 is ensured, and the service life of the roller brush driving assembly of the cleaning robot 1000 is prolonged.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected. Either mechanically or electrically. Either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The above disclosure provides many different embodiments or examples for implementing different features of the invention. In order to simplify the disclosure of the present invention, the components and arrangements of the specific examples are described above. Of course, they are merely examples and are not intended to limit the present invention. Furthermore, the present invention may repeat reference numerals and/or reference letters in the various examples, which have been repeated for purposes of simplicity and clarity and do not in themselves dictate a relationship between the various embodiments and/or arrangements discussed. In addition, the present disclosure provides examples of various specific processes and materials, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

In the description of the present specification, reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "example", "specific example", or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. A round brush assembly for a cleaning robot, the round brush assembly comprising:

the bevel gear transmission device is arranged in the cavity;

2. The brush roll assembly of claim 1, wherein the brush roll body comprises:

the cavity and the gap are arranged on the rod body;

the brush body is arranged on the rod body.

3. The brush roll assembly of claim 2, wherein the bevel gear drive is capable of reciprocating the rack structure in a first direction between a first position and a second position, the first direction being parallel to the axial direction of the rod.

4. The brush roll assembly of claim 2, wherein the body has a first free end and a second free end, the first free end being circumferentially spaced from the second free end to form the gap; the first free end is provided with a plurality of first tooth parts arranged along a first direction, the second free end is provided with a plurality of second tooth parts arranged along the first direction, and the first tooth parts and the second tooth parts are spaced and oppositely arranged.

5. The round brush assembly according to any of claims 1-4, wherein the bevel gear transmission comprises:

the bevel gear mechanism is arranged in the cavity;

the two ends of the elastic piece are respectively abutted against the rolling brush main body and the rack structure; when the rack structure moves from the first position to the second position, the rack structure can enable the elastic piece to be elastically deformed under the action of the bevel gear mechanism; the rack structure is movable from the second position to the first position under the elastic deformation force of the elastic member.

6. The round brush assembly according to claim 5, wherein the round brush assembly further comprises a round brush center shaft, and the round brush main body comprises a rod body sleeved on the round brush center shaft.

7. The brush roll assembly of claim 6, wherein the bevel gear mechanism comprises:

the bevel gear is sleeved on the central shaft of the rolling brush;

and the bevel gear can be in transmission connection with the rack structure through the transmission piece.

8. The roller brush assembly of claim 7, wherein the drive member comprises:

the bevel gear part is in transmission connection with the bevel gear;

and the straight tooth part is connected with the conical tooth part and can be in transmission connection with the rack structure.

9. The brush roll assembly of claim 8, wherein the straight teeth comprise:

a cylinder connected with the bevel portion, a circumferential surface of the cylinder including a first surface region and a second surface region;

and the straight teeth are arranged on the first surface area and can be in transmission connection with the rack structure.

10. The round brush assembly as recited in claim 5, wherein the rack structure comprises:

the rack fixing piece can be in transmission connection with the bevel gear mechanism;

the sawtooth strip is arranged on the rack fixing piece; the saw teeth are arranged on the saw tooth strip.

11. A cleaning robot, characterized by comprising:

a roller brush drive assembly; and

the round brush assembly of any one of claims 1-10, wherein the round brush drive assembly is in driving connection with the round brush assembly for driving the round brush assembly to rotate.