Sweeping device and sweeping robot

Abstract

The utility model discloses a sweeping device and a sweeping robot. The sweeping device comprises a shell, side brushes and a lifting mechanism. One end of the side brush is connected to the shell, and the other end extends away from the shell; the lifting mechanism comprises a transmission shaft, a pull ring and a binding rope, the transmission shaft is arranged in the shell and used for rotating, the pull ring is arranged in the shell and connected to the transmission shaft, one end of the binding rope is connected to the pull ring, the other end of the binding rope is connected to the side brush, and the pull ring is used for pulling the binding rope to pull the side brush upwards under the driving of rotation of the transmission shaft; the whole structure is simple, the lifting control reliability of the side brush is high, and the sweeping efficiency of the sweeping robot applying the sweeping device is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of floor-sweeping robots, in particular to a cleaning device and a floor-sweeping robot. Background Art

[0002] With the development of technology, smart home has entered people's lives. A smart floor-sweeping robot is a machine that can replace manual labor to complete floor cleaning work, effectively reducing the manual labor intensity. Current floor-sweeping robots have multiple modes such as sweeping while mopping, sweeping first and then mopping, and single mopping or single sweeping. The floor-sweeping robot completes floor cleaning by rotating the side brush provided on the side brush device. To prevent the side brush from causing secondary pollution to the already cleaned ground, when the side brush device of the floor-sweeping machine is not performing cleaning work, the side brush is lifted through a lifting mechanism designed inside the side brush device, so that the side brush is separated from the cleaning surface. For existing floor-sweeping robots, the lifting mechanism inside the side brush device uses a lead screw and a motor to cooperate for transmission to drive the side brush to lift, and it is necessary to specially set components such as a driving motor and a lead screw inside the side brush device. The overall structure is relatively complex, and the reliability of the side brush lifting is poor, affecting the cleaning efficiency of the floor-sweeping robot. Summary of the Utility Model

[0003] An embodiment of the utility model provides a cleaning device and a floor-sweeping robot, which solve the problems of the complex structure of the side brush device of the existing floor-sweeping robot and the poor reliability of side brush lifting.

[0004] In a first aspect, an embodiment of the utility model provides a cleaning device, which includes:

[0005] A housing;

[0006] A side brush, one end of which is connected to the housing, and the other end extends away from the housing;

[0007] A lifting mechanism, including a transmission shaft, a pulling ring, and a cable. The transmission shaft is arranged in the housing for rotation. The pulling ring is arranged in the housing and connected to the transmission shaft. One end of the cable is connected to the pulling ring, and the other end is connected to the side brush. Wherein, the pulling ring is used to pull the cable under the drive of the rotation of the transmission shaft to pull up the side brush.

[0008] In the cleaning device provided by the embodiment of the present utility model, the cleaning device further includes a first one-way bearing and a second one-way bearing. The first one-way bearing and the second one-way bearing are coaxially arranged up and down. The transmission shaft sequentially passes through the axles of the first one-way bearing and the second one-way bearing and is respectively fixed to the inner rings of the first one-way bearing and the second one-way bearing. The housing is fixed to the outer ring of the first one-way bearing, and the pulling ring is sleeved on the outer ring of the second one-way bearing and fixed thereto. Wherein, the rotatable direction of the inner ring of the first one-way bearing is opposite to the rotatable direction of the inner ring of the second one-way bearing.

[0009] In the cleaning device provided by the embodiment of the present utility model, the cleaning device further includes a bearing bracket. The bearing bracket is fixed in the housing. The bearing bracket is provided with a through hole penetrating through its upper and lower sides. The first one-way bearing is arranged on the upper side of the bearing bracket and its axle is aligned with the through hole. The second one-way bearing is arranged on the lower side of the bearing bracket and its axle is aligned with the through hole. The transmission shaft passes through the through hole.

[0010] In the cleaning device provided by the embodiment of the present utility model, the side brush includes a brush section and a support section. The support section is fixed to one side of the housing in the horizontal direction. The brush section is connected to the support section and extends obliquely downward relative to the horizontal direction. The binding rope is connected to the upper side of the brush section. Wherein, when the pulling ring pulls the binding rope under the drive of the rotation of the transmission shaft, the brush section moves upward relative to the support section.

[0011] In the cleaning device provided by the embodiment of the present utility model, the support section has elasticity. When the pulling ring pulls the binding rope under the drive of the rotation of the transmission shaft, the support section elastically deforms to make the brush section move upward relative to the support section.

[0012] In the cleaning device provided by the embodiment of the present utility model, a positioning hole penetrating through to the inside of the housing is provided on one side of the housing in the horizontal direction. The support section is located below the positioning hole. The binding rope is movably passed through the positioning hole.

[0013] In the cleaning device provided by the embodiment of the present utility model, the cleaning device further includes a return spring. A first connecting portion protrudes from the upper side of the brush section. The return spring is sleeved on the binding rope and one end abuts against the first connecting portion, and the other end abuts against the edge of the positioning hole. Wherein, when the transmission shaft drives the pulling ring to rotate horizontally to pull the binding rope, the return spring is compressed.

[0014] In the cleaning device provided in the embodiment of the utility model, the cleaning device also includes a side brush track member, one end of the side brush track member is fixed to the outer side wall of the shell in the horizontal direction, and the other end extends horizontally away from the shell, and the end of the side brush track member away from the shell is recessed with an installation channel, the installation channel passes through the positioning hole, the tie rope is passed through the installation channel, a part of the return spring is accommodated in the installation channel, and the other part extends out of the installation channel.

[0015] In the cleaning device provided in an embodiment of the utility model, the first connecting part includes a connecting section and a limiting section, the connecting section is fixed to the upper side of the brush section, the rope is connected to the connecting section, and the limiting section is fixed to the top of the connecting section, wherein when the brush section moves upward relative to the supporting section to be parallel to the horizontal direction, the limiting section stops at the end of the side brush track away from the shell.

[0016] In the cleaning device provided in the embodiment of the utility model, the outer ring surface of the retracting ring is provided with a concave edge along the circumference of the retracting ring, the concave edge is horizontally opposite to the positioning hole, and the tie rope is connected to the concave edge.

[0017] In a second aspect, an embodiment of the utility model provides a sweeping robot, which comprises a robot body and a cleaning device, wherein the cleaning device is arranged on the robot body, wherein the cleaning device is any one of the cleaning devices provided in the embodiment of the utility model.

[0018] The embodiment of the utility model provides a cleaning device and a sweeping robot, the cleaning device comprises a shell, a side brush and a lifting mechanism; one end of the side brush is connected to the shell, and the other end extends in a direction away from the shell; the lifting mechanism comprises a transmission shaft, a retracting ring and a tie rope, the transmission shaft is arranged in the shell for rotation, the retracting ring is arranged in the shell and connected to the transmission shaft, one end of the tie rope is connected to the retracting ring, and the other end is connected to the side brush, wherein the retracting ring is used to pull the tie rope to pull the side brush upward under the rotation of the transmission shaft. The cleaning device provided by the utility model adopts the transmission shaft, the retracting ring and the tie rope as the lifting mechanism for controlling the lifting of the side brush, and the pull ring is driven by the rotation of the transmission shaft to pull the tie rope to pull the side brush upward, so as to realize the lifting of the side brush, the overall structure is simple, the reliability of the lifting control of the side brush is high, and the sweeping robot using the cleaning device has higher cleaning efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0020] Figure 1 A perspective view of the cleaning device provided by the embodiment of the present utility model;

[0021] Figure 2 Another perspective view of the cleaning device provided by the embodiment of the present utility model;

[0022] Figure 3 A top view of the cleaning device provided by the embodiment of the present utility model;

[0023] Figure 4 An exploded view of the cleaning device provided by the embodiment of the present utility model;

[0024] Figure 5 A side view of the cleaning device provided by the embodiment of the present utility model;

[0025] Figure 6 A sectional view of the cleaning device provided by the embodiment of the present utility model;

[0026] Figure 7 For Figure 6 An enlarged view of part A;

[0027] Figure 8 Another side view of the cleaning device provided by the embodiment of the present utility model;

[0028] Figure 9 Another sectional view of the cleaning device provided by the embodiment of the present utility model;

[0029] Figure 10 For Figure 9 An enlarged view of part A;

[0030] Figure 11 A connection schematic diagram of the side brush and the binding rope provided by the embodiment of the present utility model;

[0031] Figure 12 A perspective view of the transmission shaft provided by the embodiment of the present utility model;

[0032] Figure 13 A connection schematic diagram of the first one-way bearing, the second one-way bearing and the bearing bracket provided by the embodiment of the present utility model;

[0033] Figure 14 A perspective view of the bearing bracket provided by the embodiment of the present utility model;

[0034] Figure 15 A perspective view of the housing provided by an embodiment of the present utility model;

[0035] Figure 16 A perspective view of the side brush track member provided by an embodiment of the present utility model;

[0036] Figure 17 A front view of the side brush track member provided by an embodiment of the present utility model;

[0037] Figure 18 A perspective view of the retractable ring provided by an embodiment of the present utility model;

[0038] Figure 19 A front view of the retractable ring provided by an embodiment of the present utility model;

[0039] Figure 20 A structural schematic diagram of the floor sweeping robot provided by an embodiment of the present utility model;

[0040] Each reference numeral in the figure is as follows:

[0041] 100, cleaning device; 10, housing; 101, positioning hole; 20, side brush; 21, brush section; 210, first connecting portion; 2101, connecting section; 2102, limiting section; 22, supporting section; 30, lifting mechanism; 31, transmission shaft; 32, retractable ring; 320, flange; 33, cord; 40, first one-way bearing; 41, second one-way bearing; 42, bearing bracket; 420, through hole; 50, return spring; 60, side brush track member; 601, installation channel; 200, floor sweeping robot; 2010, robot main body. Detailed implementation manners

[0042] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0043] The directional terms mentioned in the present utility model, such as "upper", "lower", "front", "rear", "left", "right", "inner", "outer", "side", etc., are only references to the directions in the attached drawings. Therefore, the directional terms used are for explaining and understanding the present utility model, rather than for limiting the present utility model. In addition, in the drawings, structures that are similar or the same are denoted by the same reference numerals.

[0044] Refer to Figures 1 to 20 and specifically refer to Figures 1 to 4, which shows an embodiment of the cleaning device 100 provided by the present utility model. The structure and working principle of the cleaning device 100 will be described in detail below with reference to the accompanying drawings of the specification. The cleaning device 100 includes a housing 10, a side brush 20, and a lifting mechanism 30; one end of the side brush 20 is connected to the housing 10, and the other end extends away from the housing 10; the lifting mechanism 30 includes a transmission shaft 31, a pulling ring 32, and a cable 33. The transmission shaft 31 is disposed in the housing 10 for rotation. The pulling ring 32 is disposed in the housing 10 and connected to the transmission shaft 31. One end of the cable 33 is connected to the pulling ring 32, and the other end is connected to the side brush 20. Wherein, the pulling ring 32 is used to pull the cable 33 under the drive of the rotation of the transmission shaft 31 to pull up the side brush 20.

[0045] In specific implementation, the cleaning device 100 as a whole is used to be assembled to the bottom of a sweeping robot as a cleaning structure. The cleaning device 100 includes a housing 10, a side brush 20, and a lifting mechanism 30. The shape of the housing 10 can be arbitrary. In this embodiment, the housing 10 is designed to be circular. The interior of the housing 10 is a cavity for installing the lifting mechanism 30 and various other components. The side brush 20 is an overall strip-shaped brush structure. The number of side brushes 20 is set to be multiple. The multiple side brushes 20 are separately arranged on the circumferential side of the housing 10. One end of each side brush 20 is connected to the outer side wall of the housing 10 in the horizontal direction, and the other end extends away from the housing 10. Specifically, it extends downward obliquely away from the housing 10 relative to the horizontal direction. The end of the side brush 20 extending away from the housing 10 is used to directly contact the cleaning surface as a structure for cleaning the cleaning surface. When the cleaning device 100 is assembled with the sweeping robot, the cleaning device 100 is installed on the drive shaft of the drive motor reserved at the bottom of the sweeping robot. The drive shaft of the drive motor at the bottom of the sweeping robot is responsible for providing rotational driving force. After the cleaning device 100 and the sweeping robot are installed, the sweeping robot is normally placed on the cleaning surface to be cleaned. The end of the side brush 20 extending away from the housing 10 will normally contact the cleaning surface. When the sweeping robot performs the cleaning work, the drive shaft of the drive motor at its bottom generates rotational driving force to drive the entire cleaning device 100 to rotate horizontally, so that the side brush 20 of the cleaning device 100 rotates horizontally to raise the dust, debris, etc. on the cleaning surface. Then the sweeping robot sucks the dust or debris into the dust box through the air flow generated by the blower provided at its bottom, thereby realizing the cleaning of the cleaning surface.

[0046] Since the side brush 20 will adhere to dust, debris, etc. during the process of cleaning the cleaning surface, the side brush 20 will inevitably get dirty. Therefore, when the sweeping robot is not performing the cleaning work, the side brush 20 of the cleaning device 100 needs to be lifted away from the cleaning surface to ensure that the already cleaned cleaning surface is not secondarily contaminated by the dirt of the side brush 20. In this embodiment, the lifting control of the side brush 20 is realized by the lifting mechanism 30, as Figure 4 shown. The lifting mechanism 30 includes a transmission shaft 31, a pulling ring 32 and a cable 33. The transmission shaft 31 is an overall straight rod-shaped structure. The specific structure of the transmission shaft 31 is as Figure 12 shown. The transmission shaft 31 is vertically arranged in the housing 10, and its top end extends to the top of the housing 10. The transmission shaft 31 is used to connect to the drive shaft of the drive motor reserved at the bottom of the sweeping robot, so as to transmit the rotational driving force provided by the drive motor of the sweeping robot to the cleaning device 100 and provide power for the cleaning device 100. For the convenience of installation, a detachable connection structure, such as a threaded hole, a buckle, etc., is usually provided at the top end of the transmission shaft 31, so that the transmission shaft 31 can be detachably installed on the drive shaft of the drive motor reserved at the bottom of the sweeping robot. The pulling ring 32 is an overall circular ring structure. The pulling ring 32 is integrally arranged in the housing 10 and is connected to the transmission shaft 31. The transmission shaft 31 can rotate under the drive of the rotational driving force. When the transmission shaft 31 rotates, it can drive the pulling ring 32 to rotate synchronously. The cable 33 is an overall soft rope structure and has good toughness. One end of the cable 33 is connected and fixed to the pulling ring 32 inside the housing 10, and the other end is connected and fixed to the side brush 20 outside the housing 10, and the cable 33 is kept in a tensioned state as a whole. The number of the cables 33 is not limited. To improve the reliability, the number of the cables 33 connected to each side brush 20 can be set to more than two. When the pulling ring 32 rotates horizontally driven by the transmission shaft 31, the position of the cable 33 connected to the pulling ring 32 moves to a position farther from the side brush 20, so that the cable 33 as a whole is pulled by the pulling ring 32, and the cable 33 generates a pulling force to pull the side brush 20 upward along the vertical direction, so that the side brush 20 is lifted to a higher position.

[0047] In specific implementation, the transmission shaft 31 of the cleaning device 100 is connected to the drive shaft of the drive motor reserved at the bottom of the floor sweeping robot, completing the installation of the cleaning device 100 and the floor sweeping robot. The rotational driving force provided by the drive shaft of the drive motor can drive the transmission shaft 31 to rotate. The rotation of the transmission shaft 31 drives the pulling ring 32 connected to the transmission shaft 31 to rotate horizontally. The rotation of the pulling ring 32 pulls the tensioned cord 33, causing the cord 33 to generate a pulling force to lift the side brush 20 upward. Under the action of the pulling force of the cord 33, the side brush 20 is lifted off the cleaning surface, avoiding secondary pollution to the cleaned cleaning surface. Overall, the cleaning device 100 only needs to cooperate and install the transmission shaft 31 with the drive shaft of the drive motor reserved at the bottom of the floor sweeping robot, without additionally setting components such as a drive motor on the cleaning device 100. The overall assembly is simple, and the lifting control of the side brush 20 is stable and reliable.

[0048] In this embodiment, a lifting mechanism for controlling the lifting and lowering of the side brush is adopted, including a transmission shaft, a pulling ring, and a cord. The transmission shaft drives the pulling ring to rotate horizontally under the driving of the rotational driving force to pull the cord, thereby lifting the side brush along the vertical direction, realizing the lifting of the side brush. The overall structure is simple, and the reliability of the side brush lifting control is high. The floor sweeping robot applying this cleaning device has higher cleaning efficiency.

[0049] In one embodiment, referring to Figure 4 、 Figure 6 and Figure 9, the cleaning device 100 further includes a first one-way bearing 40 and a second one-way bearing 41. The first one-way bearing 40 and the second one-way bearing 41 are coaxially arranged up and down. The transmission shaft 31 sequentially passes through the axles of the first one-way bearing 40 and the second one-way bearing 41 and is respectively fixed to the inner rings of the first one-way bearing 40 and the second one-way bearing 41. The housing 10 is fixed to the outer ring of the first one-way bearing 40. The pulling ring 32 is sleeved on the outer ring of the second one-way bearing 41 and fixed thereto. Wherein, the rotatable direction of the inner ring of the first one-way bearing 40 is opposite to the rotatable direction of the inner ring of the second one-way bearing 41. In a specific implementation, the first one-way bearing 40 and the second one-way bearing 41 are two one-way bearings of the same size. Both the first one-way bearing 40 and the second one-way bearing 41 are composed of two parts, namely an inner ring and an outer ring. The inner ring and the outer ring are connected by balls or cylinders. Through a unique internal structure, both the inner ring and the outer ring can only rotate in one direction and are locked in the opposite direction. When the inner ring rotates in the rotatable direction, the inner ring rotates while the outer ring remains stationary. The rotation of the inner ring is in a slipping state relative to the outer ring. When the inner ring rotates in the direction opposite to its rotatable direction, the inner ring and the outer ring are in a locked state, causing the outer ring to rotate synchronously with the outer ring. The first one-way bearing 40 and the second one-way bearing 41 are coaxially installed inside the housing 10, and the axial direction of both is the vertical direction. The transmission shaft 31 sequentially passes through the inner rings of the first one-way bearing 40 and the second one-way bearing 41. The transmission shaft 31 is fixed by interference contact with the inner rings of the first one-way bearing 40 and the second one-way bearing 41. The transmission shaft 31 is coaxial with the first one-way bearing 40 and the second one-way bearing 41. The outer ring of the first one-way bearing 40 is fixed to the inner wall of the housing 10. The pulling ring 32 is integrally sleeved on the outer ring of the second one-way bearing 41. The inner ring surface of the pulling ring 32 is fixed by interference contact with the outer ring of the second one-way bearing 41. And there is an appropriate clearance between the pulling ring 32 and the inner wall of the housing 10, and the pulling ring 32 can rotate freely inside the housing 10. The rotatable direction of the inner ring of the first one-way bearing 40 is designed to be opposite to the rotatable direction of the inner ring of the second one-way bearing 41, that is, the rotatable direction of the inner ring of the first one-way bearing 40 is the locked direction relative to the inner ring of the second one-way bearing 41, and the locked direction of the inner ring of the first one-way bearing 40 is the rotatable direction relative to the inner ring of the second one-way bearing 41.

[0050] In this embodiment, when the transmission shaft 31 is driven by a rotational driving force to drive the drive shaft to rotate in the rotatable direction of the inner ring of the second one-way bearing 41, the outer ring of the second one-way bearing 41 remains stationary. Since the pulling ring 32 is fixed to the outer ring of the second one-way bearing 41, the pulling ring 32 remains stationary and is stationary relative to the housing 10, and the side brush 20 remains in the original inclined state and contacts the cleaning surface. On the contrary, for the first one-way bearing 40, since the rotatable direction of its inner ring is opposite to the rotatable direction of the inner ring of the second one-way bearing 41, the inner ring and the outer ring of the first one-way bearing 40 are in a locked state, and the outer ring and the inner ring of the first one-way bearing 40 rotate synchronously with the transmission shaft 31. Since the housing 10 is fixedly connected to the outer ring of the first one-way bearing 40, the housing 10 also rotates synchronously with the rotation of the transmission shaft 31, thereby causing the housing 10 to rotate in the horizontal direction. The rotation of the housing 10 drives the side brush 20 to rotate horizontally, and the part of the side brush 20 in contact with the cleaning surface performs rotational friction on the cleaning surface, realizing the cleaning of the cleaning surface. When the transmission shaft 31 is driven by a rotational driving force to drive the drive shaft to rotate in the rotatable direction of the inner ring of the first one-way bearing 40, the inner ring of the first one-way bearing 40 moves while the outer ring remains stationary, and the housing 10 fixedly connected to the outer ring of the first one-way bearing 40 remains stationary; on the contrary, for the second one-way bearing 41, since the rotatable direction of its inner ring is opposite to the rotatable direction of the inner ring of the first one-way bearing 40, the inner ring and the outer ring of the second one-way bearing 41 are in a locked state, and the outer ring and the inner ring of the second one-way bearing 41 rotate synchronously with the transmission shaft 31. Since the pulling ring 32 is fixedly connected to the outer ring of the second one-way bearing 41, the pulling ring 32 will rotate synchronously with the transmission shaft 31. The position where the cord 33 is connected to the pulling ring 32 moves further away from the side brush 20, and the entire cord 33 is pulled by the pulling ring 32 and generates a pulling force to pull the side brush 20 upward along the vertical direction, changing the overall inclined state of the side brush 20 and causing the side brush 20 to be forced to lift off the cleaning surface. Overall, through the first one-way bearing 40 and the second one-way bearing 41, the horizontal rotation of the side brush 20 is realized to clean the cleaning surface, and after the cleaning of the cleaning surface is completed, the side brush 20 is lifted off the cleaning surface. The overall transmission structure is simple, stable and reliable.

[0051] Further, referring to Figure 13 and Figure 14, the cleaning device 100 further includes a bearing bracket 42, the bearing bracket 42 is fixed in the housing 10, the bearing bracket 42 is provided with a through hole 420 penetrating through its upper and lower sides, the first one-way bearing 40 is arranged on the upper side of the bearing bracket 42 and its axis is aligned with the through hole 420, the second one-way bearing 41 is arranged on the lower side of the bearing bracket 42 and its axis is aligned with the through hole 420, and the transmission shaft 31 is inserted through the through hole 420. In a specific implementation, the bearing bracket 42 is arranged inside the housing 10 as a support structure for supporting the first one-way bearing 40 and the second one-way bearing 41. The bearing bracket 42 has two support surfaces on its upper and lower sides, and a through hole 420 penetrating through the upper and lower sides of the bearing bracket 42 is provided on the bearing bracket 42. The through hole 420 is located at the center of the bearing bracket 42, and its diameter is slightly larger than the diameter of the transmission shaft 31. The first one-way bearing 40 is integrally arranged on the upper side of the bearing bracket 42, and the axis of the first bearing bracket 42 is aligned with the through hole 420 in the vertical direction. The second one-way bearing 41 is integrally arranged on the lower side of the bearing bracket 42, and the axis of the second bearing bracket 42 is also aligned with the through hole 420 in the vertical direction. The transmission shaft 31 is vertically inserted into the through hole 420. A part of the transmission shaft 31 is located on the upper side of the bearing bracket 42 and is fixedly connected to the first one-way bearing 40, and another part of the transmission shaft 31 is located on the lower side of the bearing bracket 42 and is fixedly connected to the second one-way bearing 41. The transmission shaft 31 can freely rotate in the through hole 420 of the bearing bracket 42 without affecting the bearing bracket 42. The first one-way bearing 40 and the second one-way bearing 41 are separated from each other vertically by the bearing bracket 42, preventing the movements of the first one-way bearing 40 and the second one-way bearing 41 from interfering with each other and improving the reliability of the transmission.

[0052] In one embodiment, referring to Figures 1 to 11The side brush 20 includes a brush section 21 and a support section 22. The support section 22 is fixed to one side of the housing 10 in the horizontal direction. The brush section 21 is connected to the support section 22 and extends downwardly and obliquely relative to the horizontal direction. The cord 33 is connected to the upper side of the brush section 21. Wherein, when the pulling ring 32 pulls the cord 33 driven by the rotation of the transmission shaft 31, the brush section 21 moves upward relative to the support section 22. In a specific implementation, the side brush 20 is composed of two sections, namely a brush section 21 and a support section 22. The support section 22 is fixed to the side wall of the housing 10 in the horizontal direction, and the brush section 21 is mainly used to directly contact the cleaning surface and serves as the main structure for cleaning the cleaning surface. The brush section 21 is generally strip-shaped and is provided with a bristle structure thereon. One end of the brush section 21 is fixed to the support section 22, specifically on the side of the support section 22 away from the housing 10. The brush section 21 as a whole extends downwardly and obliquely relative to the horizontal direction by a certain angle, and the extended part is used to contact the cleaning surface. The brush section 21 is connected to the support section 22 and is movable relative to the support section. Specifically, the brush section 21 can be movably connected to the support section 22 by means of hinge, or can be connected to the support section 22 by other movable connection means, as long as the brush section 21 is movable relative to the support section 22. The cord 33 is fixedly connected to the upper side of the brush section 21. When the transmission shaft 31 rotates to drive the pulling ring 32 to rotate horizontally and pull the cord 33, the cord 33 obliquely pulls the inclined brush section 21 above the brush section 21, and the brush section 21 moves upward relative to the support section 22, and the brush section 21 lifts off the cleaning surface. When it is necessary to lower the brush section 21 to contact the cleaning surface, only need to rotate the driving force to drive the transmission shaft 31 to drive the pulling ring 32 to rotate back to the original position in the reverse direction. Under the action of the gravity of the brush section 21 itself, the brush section 21 moves downward relative to the support section 22 and returns to the original inclined state, and the brush section 21 continues to contact the cleaning surface. Overall, the lifting control of the brush section 21 is simple and reliable, with low failure rate.

[0053] Furthermore, the support section 22 is elastic. When the pulling ring 32 pulls the cord 33 driven by the rotation of the transmission shaft 31, the support section 22 elastically deforms so that the brush section 21 moves upward relative to the support section 22. In a specific implementation, the support section 22 is integrally designed with an elastic material, such as rubber and other materials, so that the support section 22 as a whole has elasticity and can undergo elastic deformation. After the brush section 21 is connected and fixed to the support section 22, when the transmission shaft 31 drives the pulling ring 32 to rotate horizontally and pull the cord 33, due to the elasticity of the support section 22, the part of the support section 22 close to the brush section 21 undergoes elastic deformation, and the whole brush section 21 moves upward relative to the support section 22, and the brush section 21 is lifted upward and separated from the cleaning surface. When it is necessary to lower the brush section 21 to contact the cleaning surface, only need to rotate the driving force to drive the transmission shaft 31 to drive the pulling ring 32 to rotate in the opposite direction back to the original position. Under the action of the elastic return property of the support section 22 and the gravity of the brush section 21 itself, the brush section 21 moves downward relative to the support section 22 and returns to the original inclined state to continue to contact the cleaning surface. In the whole process, the elastic deformation of the support section 22 is used to cooperate with the pulling of the cord 33 to realize the lifting of the brush section 21. The overall structure is simple, and the reliability of the lifting of the brush section 21 is higher.

[0054] In one embodiment, referring to Figure 15 , a positioning hole 101 penetrating through the inside of the housing 10 is provided on one side of the housing 10 in the horizontal direction. The support section 22 is located below the positioning hole 101, and the cord 33 is movably threaded through the positioning hole 101. In a specific implementation, a positioning hole 101 is provided on the side wall of the housing 10 in the horizontal direction. The positioning hole 101 penetrates through the inside of the housing 10. The height of the positioning hole 101 in the vertical direction is higher than the height of the brush section 21 in the vertical direction, that is, the positioning hole 101 is located obliquely above the brush section 21. The aperture of the positioning hole 101 is slightly larger than the diameter of the cord 33. The whole cord 33 is movably threaded through the positioning hole 101, so that the whole cord 33 is on the connection line between the positioning hole 101 and the brush section 21. When the cord 33 is in a tensioned state, it is inclined relative to the horizontal plane as a whole. After the cord 33 is pulled by the pulling ring 32, the cord 33 is restricted by the position of the positioning hole 101, so that the part of the cord 33 outside the housing 10 is always on the connection line between the positioning hole 101 and the brush section 21, and the pulling effect of the cord 33 is more stable.

[0055] Furthermore, referring to 6 and Figure 7, the cleaning device 100 further includes a return spring 50. A first connecting portion 210 protrudes from the upper side of the brush section 21. The return spring 50 is sleeved on the cord 33, with one end abutted against the first connecting portion 210 and the other end abutted against the edge of the positioning hole 101. When the transmission shaft 31 drives the pulling ring 32 to rotate horizontally to pull the cord 33, the return spring 50 is compressed. In a specific implementation, the first connecting portion 210 is a convex connecting structure protruding upward from the upper side of the brush section 21, which is mainly used for connecting and fixing the cord 33. The first connecting portion 210 is specifically arranged at a position on the upper side of the brush section 21 close to the support section 22. The end of the cord 33 is fixedly connected to the first connecting portion 210, and the return spring 50 is sleeved on the cord 33. In the uncompressed state of the return spring 50, one end abuts against the first connecting portion 210 and the other end abuts against the edge of the positioning hole 101 on the outer side of the housing 10. The return spring 50 is mainly used to assist the active return of the brush section 21 after it is lifted. When the transmission shaft 31 is driven by a rotational driving force to drive the pulling ring 32 to pull the cord 33, the inclined brush section 21 gradually rises under the pulling force of the cord 33. The first limiting portion on the upper side of the brush section 21 gradually approaches the housing 10, and the return spring 50 is gradually compressed by the first connecting portion 210 to generate an elastic force, so that the brush section 21 has a tendency to move downward. When the transmission shaft 31 is driven by a rotational driving force to drive the pulling ring 32 to reverse back to its original position, under the elastic force of the return spring 50, the brush section 21 quickly drops back to its original position and maintains an inclined state in contact with the cleaning surface. During the whole process, the cord 33 always remains in a tensioned state, and the brush section 21 returns quickly and stably.

[0056] Furthermore, Figures 5 to 10 and Figure 16 、 Figure 17, the cleaning device 100 further includes a side brush 20 track member. One end of the side brush 20 track member is fixed to the outer wall of the housing 10 in the horizontal direction, and the other end extends horizontally away from the housing 10. An installation channel 601 is recessed at one end of the side brush 20 track member away from the housing 10, and the installation channel 601 penetrates through to the positioning hole 101. The cable tie 33 is threaded through the installation channel 601, and a part of the return spring 50 is received in the installation channel 601, and the other part extends out of the installation channel 601. In a specific implementation, the side brush 20 track member is provided on the outer wall of the housing 10 in the horizontal direction. The side brush 20 track member is generally short columnar. One end of it is fixed to the outer wall of the housing 10 in the horizontal direction, and the other end extends horizontally away from the outer wall of the housing 10. An installation channel 601 is recessed at one end of the side brush 20 track member away from the housing 10, that is, the installation channel 601 is provided on the end face of the end of the side brush 20 track member that extends horizontally away from the outer wall of the housing 10. The installation channel 601 penetrates along the axial direction of the side brush 20 track member to the positioning hole 101 on the outer wall of the housing 10. After the cable tie 33 passes through the positioning hole 101 on the housing 10, it is threaded in the installation channel 601 along the axial direction of the side brush 20 track member. After the return spring 50 is sleeved on the cable tie 33, a part of it close to the housing 10 is received in the installation track, and a part close to the brush section 21 extends out of the installation channel 601. The specific depth of the installation channel 601 is set to be similar to the length of the return spring 50 after being fully compressed. When the transmission shaft 31 is driven by a rotational driving force to drive the pulling ring 32 to pull the cable tie 33, the first limiting portion on the upper side of the brush section 21 gradually approaches the housing 10 and gradually compresses the return spring 50. After the return spring 50 is compressed, the part that extends out of the installation channel 601 gradually retracts into the installation channel 601. Overall, by receiving a part of the return spring 50 in the installation channel 601, it can effectively prevent sundries (such as hair) raised by the side brush 20 during the cleaning process of the cleaning surface from affecting the return spring 50, and the reliability is better.

[0057] In one embodiment, referring to Figure 6 , Figure 7 , Figure 9 and Figure 10The first connection part 210 includes a connection section 2101 and a limiting section 2102. The connection section 2101 is fixed to the upper side of the brush section 21. The tie rope 33 is connected to the connection section 2101. The limiting section 2102 is fixed to the top of the connection section 2101. When the brush section 21 moves upward relative to the support section 22 to be parallel to the horizontal direction, the limiting section 2102 stops at the end of the track of the side brush 20 away from the housing 10. In a specific implementation, the first connection part 210 consists of a connection section 2101 and a limiting section 2102. The connection section 2101 is fixed to the upper side of the brush section 21. It is mainly used to connect the tie rope 33. The end of the tie rope 33 is fixed to the connection section 2101. The limiting section 2102 is connected to the top of the connecting section 2101 and protrudes from the top of the connecting section 2101. The limiting section 2102 is mainly used to limit the lifting of the brush section 21. When the transmission shaft 31 is driven by the rotational driving force to drive the retracting ring 32 to pull the tie rope 33, the inclined brush section 21 moves upward relative to the supporting section 22 under the pulling force of the tie rope 33, and the inclined brush section 21 gradually lifts, and the connecting section 2101 and the limiting section 2102 on the upper side of the brush section 21 gradually approach the housing 10. When the brush segment 21 moves upward relative to the support segment 22 to be parallel to the horizontal direction, that is, the brush segment 21 is in a horizontal state, the limiting segment 2102 just stops on the end face of the side brush 20 track member away from the shell 10, forming a limit for the brush segment 21, so that the brush segment 21 cannot continue to be lifted, thereby preventing the brush segment 21 from being lifted excessively. The brush segment 21 can always maintain a stable state after being lifted.

[0058] In one embodiment, referring to Figure 18 and Figure 19 The outer ring surface of the retracting ring 32 is provided with a concave edge 320 along the circumference of the retracting ring 32 , and the concave edge 320 is horizontally opposite to the positioning hole 101 , and the tie rope 33 is connected to the concave edge 320 . In a specific implementation, a recessed edge 320 is provided on the outer ring surface of the retracting ring 32 along the circumference of the retracting ring 32, which is mainly used to guide the movement of the tie rope 33. The width of the recessed edge 320 is designed to accommodate the width of multiple tie ropes 33. The recessed edge 320 is horizontally opposite to the positioning hole 101 on the side wall of the shell 10. The end of the tie rope 33 is fixed in the recessed edge 320. When the transmission shaft 31 is driven by the rotational driving force to drive the retracting ring 32 to pull the tie rope 33, a part of the length of the tie rope 33 is wound in the recessed edge 320 of the retracting ring 32. Under the restriction of the recessed edge 320, the tie rope 33 will not easily detach from the retracting ring 32, the pulling of the tie rope 33 is more stable, and the lifting control of the side brush 20 is more reliable.

[0059] In one embodiment, a cleaning robot 200 is provided. Figure 20As shown in the figure, the floor sweeping robot 200 includes a robot main body 2010 and a cleaning device 100. The robot main body 2010 is mainly composed of a housing and internal components such as a controller and a driving motor. The cleaning device 100 is installed on the robot main body 2010. Specifically, the driving shaft of the driving motor inside the robot main body 2010 usually remains at the bottom of the housing of the robot main body 2010. During installation, the cleaning device 100 is assembled to the driving shaft of the driving motor of the robot main body 2010 through a transmission shaft 31. The driving motor inside the robot main body 2010 operates under the control of the controller. When the driving motor operates, the driving shaft rotates, providing a rotational driving force for the transmission shaft 31 of the cleaning device 100. Driven by the rotational driving force, the entire cleaning device 100 can rotate to make the side brush 20 rub against the cleaning surface. At the same time, driven by the rotational driving force, the lifting mechanism 30 of the cleaning device 100 can lift the side brush 20. After the side brush 20 device is installed with the robot main body 2010, the operation of the entire cleaning device 100 is controlled by the controller inside the robot main body 2010. For example, when it is necessary to clean the cleaning surface, the controller can control the entire cleaning device 100 and the side brush 20 to rotate. After the cleaning of the cleaning surface is completed, the controller controls the lifting mechanism 30 of the entire cleaning device 100 to lift the side brush 20 to avoid secondary pollution of the already cleaned cleaning surface by the side brush 20. Among them, the cleaning device 100 in this embodiment can adopt any one of the cleaning devices 100 provided by the present utility model. Since the specific structure and working principle of the cleaning device 100 have been introduced in detail in the previous description, for the sake of simplicity of the description, it will not be elaborated here.

[0060] In the floor sweeping robot of this embodiment, due to the adoption of the cleaning device provided by the present utility model, the reliability of side brush lifting control is better and the cleaning efficiency is higher.

[0061] As described above, the above is only the specific embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model can easily think of various equivalent modifications or substitutions, and these modifications or substitutions should all be covered within the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. A cleaning device, characterized in that: include: case; A side brush, one end of which is connected to the housing and the other end of which extends in a direction away from the housing; The lifting mechanism includes a transmission shaft, a retracting ring and a tie rope, wherein the transmission shaft is arranged in the shell for rotation, the retracting ring is arranged in the shell and connected to the transmission shaft, one end of the tie rope is connected to the retracting ring, and the other end is connected to the side brush, wherein the retracting ring is used to pull the tie rope to pull the side brush upward under the rotation of the transmission shaft.

2. The cleaning device according to claim 1, characterized in that: The cleaning device also includes a first one-way bearing and a second one-way bearing, the first one-way bearing and the second one-way bearing are coaxially arranged up and down, the transmission shaft is sequentially passed through the axis of the first one-way bearing and the second one-way bearing and is respectively fixed to the inner rings of the first one-way bearing and the second one-way bearing, the housing is fixed to the outer ring of the first one-way bearing, the tension ring is sleeved on the outer ring of the second one-way bearing and fixed thereto, wherein the rotatable direction of the inner ring of the first one-way bearing is opposite to the rotatable direction of the inner ring of the second one-way bearing.

3. The cleaning device according to claim 2, characterized in that: The cleaning device also includes a bearing bracket, which is fixed in the shell. The bearing bracket is provided with a through hole passing through the upper and lower sides thereof. The first one-way bearing is arranged on the upper side of the bearing bracket and its axis is aligned with the through hole. The second one-way bearing is arranged on the lower side of the bearing bracket and its axis is aligned with the through hole. The transmission shaft passes through the through hole.

4. The cleaning device according to any one of claims 1 to 3, characterized in that: The side brush includes a brush section and a support section, wherein the support section is fixed to one side of the shell in the horizontal direction, the brush section is connected to the support section and extends downwardly inclined relative to the horizontal direction, and the tie rope is connected to the upper side of the brush section, wherein when the retracting ring pulls the tie rope under the rotation of the transmission shaft, the brush section moves upward relative to the support section.

5. The cleaning device according to claim 4, characterized in that: The support section is elastic. When the retracting ring pulls the tie rope under the rotation of the transmission shaft, the support section is elastically deformed to enable the brush section to move upward relative to the support section.

6. The cleaning device according to claim 4, characterized in that: A positioning hole penetrating into the interior of the shell is provided on one side of the shell in the horizontal direction, the support section is located below the positioning hole, and the tie rope can be movably passed through the positioning hole.

7. The cleaning device according to claim 6, characterized in that: The cleaning device also includes a return spring, a first connecting portion is protruding from the upper side of the brush section, the return spring is sleeved on the tie rope and one end of the return spring is abutted against the first connecting portion, and the other end is abutted against the edge of the positioning hole, wherein when the transmission shaft drives the retracting ring to rotate horizontally to pull the tie rope, the return spring is compressed.

8. The cleaning device according to claim 7, characterized in that: The cleaning device also includes a side brush track component, one end of the side brush track component is fixed to the outer side wall of the shell in the horizontal direction, and the other end extends horizontally away from the shell. The end of the side brush track component away from the shell is recessed with an installation channel, and the installation channel passes through the positioning hole. The tie rope is passed through the installation channel, and a part of the return spring is accommodated in the installation channel, and the other part extends out of the installation channel.

9. The cleaning device according to claim 7, characterized in that: The first connecting portion includes a connecting section and a limiting section, the connecting section is fixed to the upper side of the brush section, the tie rope is connected to the connecting section, and the limiting section is fixed to the top of the connecting section, wherein when the brush section moves upward relative to the supporting section to be parallel to the horizontal direction, the limiting section stops at the end of the side brush track away from the shell.

10. The cleaning device according to claim 6, characterized in that: The outer ring surface of the retractable ring is provided with a concave edge along the circumference of the retractable ring, the concave edge is horizontally opposite to the positioning hole, and the tie rope is connected inside the concave edge.

11. A sweeping robot, characterized in that: include: Robot body; A cleaning device, provided on the robot body; Wherein, the cleaning device is a cleaning device as described in any one of claims 1-9.

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