Cleaning equipment, rolling brush assembly and rolling brush lifting control method

Abstract

The embodiment of the invention provides cleaning equipment, a rolling brush assembly and a rolling brush lifting control method. The cleaning equipment comprises an equipment body and a rolling brush assembly, the rolling brush assembly is arranged on the equipment body, and the rolling brush assembly comprises a rolling brush; the driving assembly is provided with a first driving end and a second driving end, and the first driving end is connected with a rotating shaft of the rolling brush; and the lifting mechanism is connected with the second driving end and the rolling brush. When the driving assembly is in a first working mode, the first driving end outputs rotating power in the first direction to drive the rolling brush to rotate, and the lifting mechanism does not act; when the driving assembly is in the second working mode, the second driving end outputs rotating power in the second direction, and the lifting mechanism converts the rotating power in the second direction into lifting power so as to drive the rolling brush to ascend and descend. According to the embodiment of the invention, the function reuse of the motor is realized, the arrangement of redundant parts is reduced, the structure is simple, and the structural integrity is high.

Description

Technical Field

[0001] The present application relates to the field of mechanical technology, and in particular to a cleaning device, a roller brush assembly, and a roller brush lifting and lowering control method. Background Art

[0002] At present, cleaning robots, such as sweeping robots and sweeping and mopping robots, have more and more comprehensive functions and are very popular among consumers.

[0003] At present, some cleaning robots have roller brushes that can be raised and lowered. However, in order to achieve the raising and lowering of the roller brush, a lifting motor needs to be added, which makes the structure of the robot complicated.

[0004] Application Contents

[0005] In view of the above problems, embodiments of the present application are proposed to provide a cleaning device and a roller brush assembly that solve the above problems, thereby reducing redundant components and having a simple structure.

[0006] In one embodiment of the present application, a cleaning device is provided, including a device body and a roller brush assembly, wherein the roller brush assembly is arranged on the device body, and the roller brush assembly includes:

[0007] Roller brush;

[0008] A driving assembly having a first driving end and a second driving end, wherein the first driving end is connected to a rotating shaft of the roller brush;

[0009] A lifting mechanism connected to the second driving end and the roller brush;

[0010] Wherein, when the driving assembly is in the first working mode, the first driving end outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not operate;

[0011] When the driving component is in the second working mode, the second driving end outputs a rotational power in a second direction, and the lifting mechanism converts the rotational power in the second direction into a lifting power to drive the roller brush to lift and lower.

[0012] Optionally, the driving component includes:

[0013] Motor;

[0014] A first transmission assembly having a first input end and the first driving end, wherein the first input end is connected to the output shaft of the motor;

[0015] A second transmission assembly having a second input end and the second driving end, wherein the second input end is connected to the output shaft of the motor;

[0016] Among them, along the axial direction of the motor output shaft, the first transmission assembly and the second transmission assembly are respectively located on both sides of the motor; in the first working mode, the motor rotates forward; in the second working mode, the motor rotates reversely.

[0017] Optionally, the lifting mechanism includes: a lifting shaft, a one-way bearing and a cam;

[0018] The lifting shaft is connected to the second driving end;

[0019] The one-way bearing is arranged on the lifting shaft, and the one-way bearing is arranged in the camshaft hole of the cam;

[0020] The cam contacts the bearing surface at a corresponding position on the device body;

[0021] The lifting shaft is connected to the roller brush via a connecting piece;

[0022] When the second driving end outputs rotational power in a first direction, the cam remains stationary due to the one-way bearing; when the second driving end outputs rotational power in a second direction, the cam rotates along the second direction, and under the action of the bearing surface, the lifting shaft lifts and lowers to drive the roller brush to lift and lower.

[0023] Optionally, the cleaning device further comprises a roller brush cavity cover; the roller brush cavity cover is arranged above the roller brush;

[0024] The roller brush can rotate relative to the roller brush cavity cover;

[0025] The motor and the second transmission assembly are located above the roller brush chamber cover;

[0026] The motor transmits the rotational power to the roller brush below through the first transmission assembly;

[0027] A connecting piece extending upward is provided above the roller brush cavity cover, and the lifting mechanism is connected to the roller brush via the connecting piece.

[0028] Optionally, the equipment body includes a roller brush seat; a vertical plate is provided on the roller brush seat; and the driving assembly and the lifting mechanism are located on both sides of the vertical plate.

[0029] Optionally, a guide hole is provided on the vertical plate, and the lifting shaft is inserted into the guide hole; when the lifting mechanism is actuated, the lifting shaft moves in the guide hole.

[0030] Optionally, the guide hole extends obliquely upward, with a bottom end of the guide hole close to the device body and a top end away from the device body.

[0031] Optionally, an edge of the vertical plate on a side facing the lifting mechanism is provided with an eave extending toward the lifting mechanism;

[0032] The wheel surface of the cam contacts the eaves.

[0033] In another embodiment of the present application, a roller brush assembly is provided. The roller brush assembly includes:

[0034] Roller brush;

[0035] A driving assembly having a first driving end and a second driving end, wherein the first driving end is connected to a rotating shaft of the roller brush;

[0036] A lifting mechanism connected to the second driving end and the roller brush;

[0037] Wherein, when the driving assembly is in the first working mode, the first driving end outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not operate;

[0038] When the driving component is in the second working mode, the second driving end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into the lifting power to drive the roller brush to lift.

[0039] In another embodiment of the present application, a method for controlling the lifting of a roller brush is provided. The method comprises:

[0040] The driving component is controlled to work in a first working mode, the first output end of the driving component outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not move; wherein the driving component also has a second output end, and the second output end is connected to the lifting mechanism;

[0041] When it is detected that the roller brush needs to be lifted, the driving component is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into lifting power to drive the roller brush to lift.

[0042] Optionally, the method further includes:

[0043] When it is detected that the roller brush needs to be lowered, the driving assembly is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into a descending power to drive the roller brush to descend;

[0044] After detecting that the roller brush descends to a preset height, the driving component is controlled to switch from the second working mode to the first working mode.

[0045] The technical solution provided in the embodiment of the present application can realize the lifting and rotation of the roller brush through one motor, realize the functional reuse of the motor, and reduce the setting of redundant components, thereby reducing weight and reducing space occupancy. In addition, the roller brush assembly has a simple structure, is easy to assemble, has a high structural integrity, and improves space utilization.

[0046] In addition, a motor is simpler to control, and the controller on the cleaning equipment only needs to control the motor to switch the working mode. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 A schematic diagram of the exploded structure of the roller brush assembly provided in an embodiment of the present application;

[0049] Figure 2 A schematic diagram of a partial cross-sectional structure of a roller brush assembly provided in an embodiment of the present application;

[0050] Figure 3 A schematic diagram of the side cross-sectional structure of the roller brush assembly provided in an embodiment of the present application, with the roller brush in a lowered state;

[0051] Figure 4 A schematic diagram of the side cross-sectional structure of the roller brush assembly provided in an embodiment of the present application, with the roller brush in a raised state;

[0052] Figure 5 A schematic structural diagram of the roller brush holder provided in an embodiment of the present application. DETAILED DESCRIPTION

[0053] In the prior art, some cleaning robot roller brushes need to be able to rise and fall in addition to rotating. For example, when the cleaning robot moves to the carpet area, it needs to lift the roller brush to reduce the travel resistance. After the cleaning robot leaves the carpet area, the roller brush is lowered. In order to achieve the lifting and lowering of the roller brush, the prior art needs to be equipped with a roller brush lifting mechanism and a roller brush rotating mechanism. The roller brush lifting mechanism needs to be equipped with a lifting motor to output the lifting power to achieve the lifting and lowering of the roller brush. The roller brush rotating mechanism also needs to be equipped with a rotating motor to output the rotating power to achieve the rotation of the roller brush. This makes the overall structure of the robot more complicated, the overall space occupancy rate of the roller brush part is large, and the structure of the whole machine is large and not light enough. At the same time, there are many parts, and assembly is difficult, etc.

[0054] In view of the above problems, an embodiment of the present application is proposed to realize the rotation and lifting of the roller brush by adopting a simpler structure.

[0055] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0056] Figure 1 This is a schematic diagram of the exploded structure of the roller brush assembly provided in the embodiment of the present application. Figure 2 A partial cross-sectional structural diagram of a roller brush assembly provided in an embodiment of the present application is shown in FIG. Figure 1 and Figure 2 shown.

[0057] In one embodiment of the present application, a cleaning device is provided, comprising: a device body 100 and a roller brush assembly disposed on the device body 100. It should be noted that the device body 100 is Figure 1 and Figure 2 Not shown in Figure 3 and Figure 4 Only a part of the device body 100 is shown. This embodiment does not limit the structure of the device body. Different types of devices may have different structural forms of the device body. For example, the cleaning device is a handheld scrubber or vacuum cleaner, and the device body may be a floor brush of the scrubber or vacuum cleaner. For another example, the cleaning device is a sweeping robot or a washing and mopping robot, and the device body is the body of the robot, and its appearance may be a round body appearance.

[0058] Specifically, Figure 1 and Figure 2 As shown, the roller brush assembly may include but is not limited to: a roller brush 20, a driving assembly 40, and a lifting mechanism 50. The driving assembly 40 has a first driving end and a second driving end, and the first driving end is connected to the rotating shaft of the roller brush. The lifting mechanism 50 is connected to the second driving end and the roller brush 20; when the driving assembly 40 is in the first working mode, the first driving end outputs a rotational power in a first direction to drive the roller brush 20 to rotate, and the lifting mechanism 50 does not operate. When the driving assembly 40 is in the second working mode, the second driving end outputs a rotational power in a second direction, and the lifting mechanism 50 converts the rotational power in the second direction into a lifting power to drive the roller brush 20 to rise and fall.

[0059] The first direction and the second direction are two different directions, one of the first direction and the second direction is clockwise, and the other is counterclockwise.

[0060] The technical solution provided in this embodiment can realize the lifting and rotating of the roller brush through one motor, realize the functional reuse of the motor, reduce the setting of redundant components, thereby reducing weight and space occupancy, and the roller brush assembly has a simple structure, is easy to assemble, has high structural integrity, and improves space utilization. In addition, one motor is simpler to control, and the controller on the cleaning device only needs to control the motor to switch the working mode.

[0061] In a feasible technical solution, Figure 1 As shown, the drive assembly 40 includes: a motor 41, a first transmission assembly 42 and a second transmission assembly 43. The first transmission assembly 42 has a first input end and the first drive end, and the first input end is connected to the output shaft of the motor 41. The second transmission assembly has a second input end and the second drive end, and the second input end is connected to the output shaft of the motor 41. Along the axial direction of the output shaft of the motor 41, the first transmission assembly 42 and the second transmission assembly 43 are respectively located on both sides of the motor 41; in the first working mode, the motor 41 rotates forward; in the second working mode, the motor 41 rotates reversely.

[0062] The clockwise direction of the motor output is positive rotation, or the counterclockwise direction of the motor output is positive rotation, which is related to the cleaning design principle of the cleaning device. When the cleaning device performs a cleaning task, the direction of the motor output is positive rotation, and the corresponding direction opposite to the direction is reverse rotation.

[0063] Further, such as Figure 1 and 2 As shown, the lifting mechanism includes: a lifting shaft 51, a one-way bearing 52 and a cam 53. The lifting shaft 51 is connected to the second driving end. The one-way bearing 52 is arranged on the lifting shaft 51, and the one-way bearing 52 is arranged in the camshaft hole of the cam 53. The cam 53 contacts the bearing surface at the corresponding position on the device body; the lifting shaft 51 is connected to the roller brush 20 through the connecting member 31. When the second driving end outputs the rotational power in the first direction, the cam is immobile due to the one-way bearing; when the second driving end outputs the rotational power in the second direction, the cam 53 rotates along the second direction, and under the action of the bearing surface, the lifting shaft 51 is lifted and lowered to drive the roller brush 20 to lift and lower.

[0064] like Figure 1 and 2In the embodiment shown, the cleaning device may further include a roller brush chamber cover 30. The roller brush chamber cover 30 is disposed above the roller brush 20; the roller brush 20 can rotate relative to the roller brush chamber cover 30. The motor 41 and the second transmission assembly 43 are located above the roller brush chamber cover 30. The motor 41 transmits the rotational power to the roller brush 20 below through the first transmission assembly 42. A connecting member 31 extending upward is provided above the roller brush chamber cover 30, and the lifting mechanism is connected to the roller brush 20 through the connecting member 31.

[0065] Further, such as Figure 1 As shown, the device body 100 includes a roller brush seat 10. A vertical plate 14 is provided on the roller brush seat 10. The driving assembly 40 and the lifting mechanism are located on both sides of the vertical plate 14. A guide hole 141 is provided on the vertical plate 14, and the lifting shaft 51 is inserted into the guide hole 141. When the lifting mechanism is activated, the lifting shaft 51 moves in the guide hole 141.

[0066] The roller brush holder 10 is fixedly arranged on the device body 100, and is used to provide a carrier for supporting the roller brush cavity cover 30, the driving assembly 40 and the lifting mechanism 50, and is used to assemble the roller brush assembly on the device body 100. The roller brush cavity cover 30 and the roller brush holder 10 are movably connected, and according to different cleaning requirements, the roller brush cavity cover 30 can rise and fall relative to the roller brush holder 10, thereby driving the roller brush 20 to rise and fall synchronously, so as to be suitable for different cleaning scenes.

[0067] For example, in the embodiments of the present application, the cleaning equipment includes but is not limited to a sweeping robot, a floor scrubber, a vacuum cleaner, etc., and of course, also includes any other equipment with a roller brush assembly, which is not specifically limited in the embodiments of the present application. Taking a sweeping robot as an example, when the sweeping robot cleans different cleaning surfaces, the height of the roller brush 20 can be adjusted according to needs to ensure the cleaning effect of the sweeping robot.

[0068] For example, when the robot vacuum cleaner cleans floors, tiles, etc. Figure 3 , the roller brush 20 can be in a lowered state, at which time the roller brush 20 can be close to the ground, the motor 41 works in the first working mode, and drives the roller brush 20 to rotate through the first transmission assembly 42 to clean the ground. Figure 3 Taking the middle position as an example, to achieve a cleaning effect, the roller brush 20 rotates clockwise, so that garbage and other dirt can be collected at the suction port of the device body 100 behind the roller brush 20. The first working mode of the motor 41 is that the rotation direction of the driving part of the motor 41 is forward, and the roller brush 20 is driven to rotate clockwise through the transmission of the first transmission assembly 42.

[0069] When the sweeping robot cleans the carpet or other surfaces, the resistance between the roller brush 20 and the carpet increases, which will reduce the cleaning effect of the sweeping robot. At this time, the roller brush 20 can be lifted to a preset height. The lifting method is to refer to Figure 4 , the motor 41 works in the second working mode, and drives the roller brush chamber cover 30 and the driving assembly 40 to rise synchronously relative to the roller brush seat 10 through the second transmission assembly 43. When the roller brush chamber cover 30 drives the roller brush 20 to rise to a preset height, the motor 41 can be controlled (such as by the controller of the cleaning device) to stop working. When the motor 41 is in the second working mode, the direction of the rotational power output by the motor is opposite to that in the first working mode. If the rotational power output by the motor is forward in the first working mode, then in the second working mode, the motor is reversed.

[0070] When the robot vacuum cleaner finishes cleaning the carpet and moves to the floor, tile, or other surfaces, continue to Figure 3 In order to make the roller brush 20 close to the ground again, the motor 41 works in the second working mode again, and drives the roller brush cavity cover 30 and the driving assembly 40 to synchronously descend relative to the roller brush seat 10 through the second transmission assembly 43. When the roller brush cavity cover 30 drives the roller brush 20 to descend to a preset distance, such as making the roller brush 20 close to the ground, the motor 41 works in the first working mode again to drive the roller brush 20 to rotate and continue the cleaning operation.

[0071] The technical solution provided in the embodiment of the present application realizes the reuse of the roller brush motor. The roller brush motor rotates forward to complete the roller brush rotation, and the roller brush motor rotates backward to complete the roller brush lifting. The roller brush rotation and roller brush lifting are completed by one roller brush motor, and the roller brush lifting and roller brush rotating parts are integrated into one component, which is convenient for the arrangement of the structure, fully utilizes the extra space, and makes the roller brush motor reversal function available, thereby achieving the maximum utilization rate of the whole machine space.

[0072] like Figure 3 and Figure 4 In the illustrated embodiment, the guide hole 141 extends obliquely upward, with the bottom end of the guide hole 141 close to the device body 100 and the top end away from the device body 100 .

[0073] See also Figure 3 and Figure 4 In the embodiment shown, the embodiment of the present application provides a solution, in which the lifting shaft 51 moves along the oblique guide hole 141 as shown in the figure when it is lifted. For the convenience of description, the movement in the direction close to the device body is backward movement, and the movement away from the device body is forward movement. The guide hole 141 is inclined from the rear end to the front end from the bottom to the top, that is, the lifting path of the roller brush 20 is a backward and upward oblique line, and the descending path is a forward and downward oblique line.

[0074] like Figure 1 and 2As shown, the edge of the vertical plate 14 facing the lifting mechanism is provided with an eave 11 extending toward the lifting mechanism; the cam 53 contacts the eave 11. The bearing surface at the corresponding position on the equipment body mentioned above can be the eave 11 here.

[0075] Continue to see Figure 1 and Figure 2 In some achievable embodiments of the present application, one achievable manner of the second transmission assembly 43 is that the second transmission assembly 43 includes a lifting gear box. The input end of the lifting gear box is connected to the motor 41. The lifting gear box may include a plurality of meshing gears in the box body, which can play the role of speed change and transmission, and transmit the power of the motor 41 to the lifting shaft 51 after speed change.

[0076] Continue to see Figure 1 and Figure 2 In some achievable embodiments of the present application, the cam 53 may be an eccentric cam. Relative to the rotation axis connected to the lifting shaft 51, the eccentric cam has a proximal end and a distal end, the proximal end refers to the wheel edge whose edge is closer to the rotation axis, and the distal end refers to the wheel edge whose edge is farther from the rotation axis. When the eccentric cam rotates on the eaves 11, as the eccentric cam rotates around the lifting shaft 51, the lifting shaft 51 will rise or fall relative to the eaves 11, thereby driving the roller brush chamber cover 30 to rise and fall. According to the requirements of different rising and falling distances, eccentric cams of different shapes can be used, that is, by setting different distances between the proximal end and the distal end of the eccentric cam and the rotation axis, the roller brush 20 can be set to different lifting distances.

[0077] For example, see Figure 3 In the initial state, the eccentric cam contacts the eaves 11 through the proximal end. At this time, the roller brush 20 assembly is in a descending state, and the motor 41 works in the first working mode, such as the motor 41 rotates forward, thereby driving the roller brush 20 to rotate through the first transmission assembly 42 to clean the ground.

[0078] When the roller brush 20 needs to be lifted, Figure 3 The state transitions to Figure 4 Status, see Figure 4, the motor 41 works in the second working mode. If the motor 41 is reversed, the motor 41 drives the lifting shaft 51 to rotate through the second transmission assembly 43, and the lifting shaft 51 drives the eccentric cam to rotate. In the process of the eccentric cam gradually transitioning from the proximal end to the distal end and contacting the eaves 11, the eccentric cam and the eaves 11 work together to make the lifting shaft 51 rise, thereby driving the roller brush chamber cover 30, the driving assembly 40 and the roller brush 20 to rise synchronously relative to the roller brush seat 10. After lifting to the preset height, the motor 41 stops working so that the roller brush chamber cover 30 stays at the current relative position. At this time, the motor 41 can be continuously in the shutdown state until it is satisfied to lower the roller brush to use the roller brush to perform the cleaning operation, and then start working in the second working mode. After the roller brush is lowered to the set position, the motor works in the first working mode again to drive the roller brush 20 to rotate for cleaning operations.

[0079] When the roller brush 20 needs to be lowered, Figure 4 The state transitions to Figure 3 Status, see Figure 3 , the motor 41 works in the second working mode. If the motor 41 is reversed, the motor 41 drives the lifting shaft 51 to rotate through the second transmission assembly 43, and the lifting shaft 51 drives the eccentric cam to rotate. The eccentric cam gradually transitions from the far end to the near end. In the process of contacting the eaves 11, the lifting shaft 51 is lowered, thereby driving the roller brush chamber cover 30, the driving assembly 40 and the roller brush 20 to synchronously descend relative to the roller brush seat 10. When the roller brush chamber cover 30 drives the roller brush 20 to descend to a preset distance, the motor 41 stops working so that the roller brush chamber cover 30 stays at the current relative position. At this time, the motor 41 is started to work in the first working mode to drive the roller brush 20 to rotate for cleaning.

[0080] In the embodiment of the present application, the one-way bearing 52 can realize that when the motor 41 is in the first working mode, the lifting shaft 51 can rotate relative to the cam 53, but the cam does not rotate. When the motor 41 is in the second working mode, the lifting shaft 51 can drive the cam 53 to rotate through the one-way bearing 52.

[0081] That is, when the motor 41 works in the second working mode, such as the motor 41 reverses, the lifting shaft 51 rotates, and based on the set one-way bearing 52, the lifting shaft 51 is locked with the cam 53 through the one-way bearing 52 to form a whole. The lifting shaft 51 can drive the cam 53 to rotate through the one-way bearing 52, thereby cooperating with the eaves 11 to drive the lifting shaft 51 to rise and fall.

[0082] Furthermore, in some feasible embodiments, in order to prevent the motor 41 from affecting the roller brush 20 when in the second working mode, a one-way bearing may be provided between the motor 41 and the first transmission assembly, so that when the motor 41 is in the second working mode, the roller brush 20 will not be driven to reverse. For example, the one-way bearing is provided on the input shaft of the first transmission assembly.

[0083] See also Figures 1 to 4 In some achievable embodiments of the present application, one connection method between the roller brush chamber cover 30 and the lifting shaft 51 is that a connecting member 31 with a connecting hole 311 is provided on the roller brush chamber cover 30, and the connecting member 31 is rotatably connected to the lifting shaft 51 through the connecting hole 311. The connecting member 31 protrudes from the housing of the roller brush chamber cover 30, so that the roller brush chamber cover 30 is connected to the lifting shaft 51 without affecting the overall structure of the roller brush chamber cover 30. When the lifting shaft 51 rotates, it can rotate relative to the connecting hole 311. When the lifting shaft 51 is lifted or lowered relative to the roller brush seat 10, the roller brush chamber cover 30 can be driven to be lifted or lowered synchronously through the connecting member.

[0084] The connecting member 31 may be Figure 1 A structure similar to the connecting ear shown in .

[0085] In order to make the lifting shaft 51 rotate more smoothly relative to the connecting hole 311, in some achievable embodiments of the present application, a support bearing 54 is provided between the connecting hole 311 and the lifting shaft 51. The support bearing 54 can effectively reduce the friction between the lifting shaft 51 and the connecting hole 311, so that the lifting shaft 51 rotates more smoothly. At the same time, when the motor 41 is in the first working mode, the support bearing 54 also plays a supporting role to ensure the stability of the operation of the motor 41.

[0086] See also Figure 2 In some achievable embodiments of the present application, the roller brush holder 10 has a receiving chamber 12. The motor 41 and the first transmission assembly 42 are disposed in the receiving chamber 12, and the first transmission assembly 42 partially extends out of the receiving chamber 12 and is connected to the roller brush 20. The second transmission assembly 43 is disposed in the receiving chamber 12, and the cam 53 is located outside the receiving chamber 12.

[0087] According to different requirements, the guide hole 141 can extend in a variety of directions. One achievable method is that the guide hole 141 extends in the vertical direction. This extension of the guide hole 141 can make the lifting direction of the lifting shaft 51 vertical, so that the lifting direction of the roller brush chamber cover 30 is also vertical. When lifting to the same height, the roller brush chamber cover 30 moves a smaller distance, so that the lifting response is faster.

[0088] Another achievable method is that the guide hole 141 extends obliquely upward. That is, for example, extending obliquely from bottom to top and from back to front as mentioned above. The guide hole 141 may extend obliquely upward along the advancing direction of the cleaning device, that is, along the advancing direction of the cleaning device, the height of the guide hole 141 gradually increases. Alternatively, the guide hole 141 may extend obliquely upward along the retreating direction of the cleaning device, that is, along the retreating direction of the cleaning device, the height of the guide hole 141 gradually increases, and along the advancing direction of the cleaning device, the height of the guide hole 141 gradually decreases. This extension of the guide hole 141 can make the lifting direction of the lifting shaft 51 an inclined direction.

[0089] In order to better realize the synchronous lifting and lowering of the driving component 40 and the roller brush chamber cover 30, one possible way is that the first transmission component can be a driving gear box. The housing of the driving gear box is connected with the roller brush chamber cover 30 in an interlocking manner. The interlocking connection is that a first convex-concave structure is provided on the housing of the driving gear box, and a second convex-concave structure used in conjunction with the first convex-concave structure is provided at a corresponding position of the roller brush chamber cover 30. The first convex-concave structure and the second convex-concave structure are interlocked with each other. Based on the interlocking connection between the first convex-concave structure and the second convex-concave structure, the roller brush chamber cover 30 and the driving mechanism can be regarded as a whole, so that when the cam 53 drives the lifting shaft 51 to perform a lifting action, the driving component 40 and the roller brush chamber cover 30 are lifted and lowered synchronously.

[0090] Based on the above embodiments, accordingly, see Figure 1 and 2 As shown, the present application also provides a roller brush assembly, including but not limited to: a roller brush 20, a driving assembly 40, and a lifting mechanism 50. Among them, the driving assembly 40 has a first driving end and a second driving end, and the first driving end is connected to the rotating shaft of the roller brush. The lifting mechanism 50 is connected to the second driving end and the roller brush 20; when the driving assembly 40 is in the first working mode, the first driving end outputs a rotational power in a first direction to drive the roller brush 20 to rotate, and the lifting mechanism 50 does not operate. When the driving assembly 40 is in the second working mode, the second driving end outputs a rotational power in a second direction, and the lifting mechanism 50 converts the rotational power in the second direction into a lifting power to drive the roller brush 20 to rise and fall.

[0091] The roller brush assembly can be applied to cleaning equipment, including but not limited to sweeping robots, floor scrubbers, vacuum cleaners, etc., and of course, other cleaning equipment equipped with a roller brush 20 assembly, and the embodiments of the present application do not make specific limitations.

[0092] It should be noted that the implementation method of the roller brush assembly can refer to and draw on the methods described in the above embodiments when there is no structural conflict. The roller brush assembly is the roller brush assembly described in the above embodiments, which will not be described in detail here.

[0093] In summary, the technical solution provided in the embodiment of the present application can realize the lifting and rotation of the roller brush 20 through a motor 41, realize the functional reuse of the motor 41, and reduce the setting of redundant components, thereby reducing weight and reducing space occupancy. In addition, the structure of the roller brush 20 assembly is simple, easy to assemble, and has high structural integrity, thereby improving space utilization.

[0094] The following is an explanation of the technical solution adopted in this application in combination with specific application scenarios to help understanding. Take the application of the roller brush assembly to a sweeping robot as an example.

[0095] Application scenario 1

[0096] When the robot vacuum cleaner is cleaning the floor, Figure 3 , the eccentric cam contacts the eaves 11 through the proximal end, at this time, the roller brush 20 assembly is in a descending state, the motor 41 rotates forward, thereby driving the roller brush 20 to rotate through the first transmission assembly 42 to clean the floor. At the same time, based on the one-way bearing 52, the lifting shaft 51 can rotate relative to the eccentric cam, and the eccentric cam does not move.

[0097] When the robot vacuum cleaner needs to clean the carpet, see Figure 4 , the motor 41 reverses, and the motor 41 drives the lifting shaft 51 to rotate through the second transmission assembly 43. The lifting shaft 51 drives the eccentric cam to rotate through the one-way bearing 52. The eccentric cam gradually transitions from the proximal end to the distal end and contacts the eaves 11, so that the lifting shaft 51 rises, thereby driving the roller brush chamber cover 30, the driving assembly 40 and the roller brush 20 to rise synchronously relative to the roller brush seat 10. When the roller brush chamber cover 30 drives the roller brush 20 to rise to a preset height, the motor 41 stops working through the second working mode, so that the roller brush chamber cover 30 stays at the current relative position.

[0098] Application scenario 2

[0099] After the robot vacuum cleaner has finished cleaning the carpet, it returns to the floor. Figure 3 At this time, the motor 41 reverses, and the motor 41 drives the lifting shaft 51 to rotate through the second transmission assembly 43. Based on the one-way bearing 52, the lifting shaft 51 is locked with the eccentric cam through the one-way bearing 52 to form a whole. The lifting shaft 51 can drive the eccentric cam to rotate through the one-way bearing 52. In the process of the eccentric cam gradually transitioning from the far end to the near end and contacting the eaves 11, the lifting shaft 51 descends, thereby driving the roller brush chamber cover 30, the driving assembly 40 and the roller brush 20 to synchronously descend relative to the roller brush seat 10. When the roller brush chamber cover 30 drives the roller brush 20 to descend to a preset distance, the motor 41 stops working through the second working mode, so that the roller brush chamber cover 30 stays at the current relative position. At this time, the motor 41 can work through the first working mode to drive the roller brush 20 to rotate for cleaning operations.

[0100] Furthermore, the present application also provides a roller brush lifting control method. The method comprises:

[0101] S101, controlling the driving component to work in a first working mode, wherein the first output end of the driving component outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not operate; wherein the driving component further has a second output end, and the second output end is connected to the lifting mechanism;

[0102] S102, when it is detected that the roller brush needs to be lifted, the driving component is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into lifting power to drive the roller brush to lift.

[0103] Furthermore, this embodiment may also include the following steps:

[0104] S103, when it is detected that the roller brush needs to be lowered, the driving assembly is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into a descending power to drive the roller brush to descend;

[0105] S104, after detecting that the roller brush descends to a preset height, controlling the driving component to switch from the second working mode to the first working mode.

[0106] Among them, the above-mentioned detection of whether the roller brush needs to be raised or lowered can be achieved through the sensor on the cleaning device. For example, the sensor detects that the cleaning device is currently moving to an area with ceramic tiles or wooden floors, and sends a first signal to the controller of the cleaning device. After receiving the first signal, the controller determines that the roller brush is in a lowered state. If the roller brush is in a raised state at this time, the motor is controlled to work in the second working mode. If the roller brush is in a lowered state at this time, no response is required. The sensor detects that the cleaning device is currently moving to an area with carpet-like materials, and sends a second signal to the controller of the cleaning device. After receiving the second signal, the controller determines that the roller brush is in a raised state. If the roller brush is in a lowered state at this time, the motor is controlled to work in the second working mode. If the roller brush is in a raised state at this time, no response is required.

[0107] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cleaning device, characterized in that: It includes a device body and a roller brush assembly, wherein the roller brush assembly is arranged on the device body, and the roller brush assembly includes: Roller brush; A driving assembly having a first driving end and a second driving end, wherein the first driving end is connected to a rotating shaft of the roller brush; A lifting mechanism connected to the second driving end and the roller brush; Wherein, when the driving assembly is in the first working mode, the first driving end outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not operate; When the driving component is in the second working mode, the second driving end outputs a rotational power in a second direction, and the lifting mechanism converts the rotational power in the second direction into a lifting power to drive the roller brush to lift and lower.

2. The cleaning device according to claim 1, characterized in that The drive assembly comprises: Motor; A first transmission assembly having a first input end and the first driving end, wherein the first input end is connected to the output shaft of the motor; A second transmission assembly having a second input end and the second driving end, wherein the second input end is connected to the output shaft of the motor; Among them, along the axial direction of the motor output shaft, the first transmission assembly and the second transmission assembly are respectively located on both sides of the motor; in the first working mode, the motor rotates forward; in the second working mode, the motor rotates reversely.

3. The cleaning device according to claim 2, characterized in that: The lifting mechanism comprises: a lifting shaft, a one-way bearing and a cam; The lifting shaft is connected to the second driving end; The one-way bearing is arranged on the lifting shaft, and the one-way bearing is arranged in the camshaft hole of the cam; The cam contacts the bearing surface at a corresponding position on the device body; The lifting shaft is connected to the roller brush via a connecting piece; When the second driving end outputs rotational power in a first direction, the cam remains stationary due to the one-way bearing; when the second driving end outputs rotational power in a second direction, the cam rotates along the second direction, and under the action of the bearing surface, the lifting shaft lifts and lowers to drive the roller brush to lift and lower.

4. The cleaning device according to claim 3, characterized in that: It also includes a roller brush cavity cover; the roller brush cavity cover is arranged above the roller brush; The roller brush can rotate relative to the roller brush cavity cover; The motor and the second transmission assembly are located above the roller brush chamber cover; The motor transmits the rotational power to the roller brush below through the first transmission assembly; A connecting piece extending upward is provided above the roller brush cavity cover, and the lifting mechanism is connected to the roller brush via the connecting piece.

5. The cleaning device according to any one of claims 1 to 4, characterized in that The equipment body includes a roller brush seat; The roller brush seat is provided with a vertical plate; The driving assembly and the lifting mechanism are located on both sides of the vertical plate.

6. The cleaning device according to claim 5, characterized in that The vertical plate is provided with a guide hole, and the lifting shaft is inserted into the guide hole; When the lifting mechanism is in motion, the lifting shaft moves in the guide hole.

7. The cleaning device according to claim 6, characterized in that The guide hole extends obliquely upward, with the bottom end of the guide hole close to the device body and the top end away from the device body.

8. The cleaning device according to claim 5, characterized in that An edge of the vertical plate on a side facing the lifting mechanism is provided with an eave extending toward the lifting mechanism; The cam is in contact with the eaves.

9. A roller brush assembly, characterized in that: include: Roller brush; A driving assembly having a first driving end and a second driving end, wherein the first driving end is connected to a rotating shaft of the roller brush; A lifting mechanism connected to the second driving end and the roller brush; Wherein, when the driving assembly is in the first working mode, the first driving end outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not operate; When the driving component is in the second working mode, the second driving end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into the lifting power to drive the roller brush to lift.

10. A roller brush lifting control method, characterized in that: include: The driving component is controlled to work in a first working mode, the first output end of the driving component outputs a rotational force in a first direction to drive the roller brush to rotate, and the lifting mechanism does not move; wherein the driving component also has a second output end, and the second output end is connected to the lifting mechanism; When it is detected that the roller brush needs to be lifted, the driving component is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into lifting power to drive the roller brush to lift.

11. The method according to claim 10, characterized in that Also includes: When it is detected that the roller brush needs to be lowered, the driving assembly is controlled to work in the second working mode, the second output end outputs the rotational power in the second direction, and the lifting mechanism converts the rotational power in the second direction into a descending power to drive the roller brush to descend; After detecting that the roller brush descends to a preset height, the driving component is controlled to switch from the second working mode to the first working mode.

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