CN218045001U

CN218045001U - Cleaning robot and cleaning device and lifting device applied to same

Info

Publication number: CN218045001U
Application number: CN202221496852.0U
Authority: CN
Inventors: 宋三力; 宗志巍; 刘逸飞; 班永
Original assignee: Ecovacs Robotics Suzhou Co Ltd
Current assignee: Ecovacs Robotics Suzhou Co Ltd
Priority date: 2022-06-15
Filing date: 2022-06-15
Publication date: 2022-12-16
Anticipated expiration: 2032-06-15

Abstract

The application discloses cleaning machines people and cleaning device, elevating gear who uses thereof. This application can drive the cleaning assembly and take place to rotate when driving motor exports first moment of torsion with first direction of rotation, and when driving motor exports the second moment of torsion with the second direction of rotation, lifting unit carries out the transmission through selecting driving medium and power output shaft and is connected to actuating cleaning assembly removes towards the direction of keeping away from the face of waiting to clean, actuates cleaning assembly promptly and rises. This application can drive the rotation of clean subassembly in order to clean the face of treating through driving motor, means that this application can be applicable to rotatable clean subassembly including drive assembly, lifting unit and selection driving medium elevating system to this application can also actuate clean subassembly through driving motor and rise, need not additionally to set up the mechanism that is used for driving clean subassembly to go up and down, and the elevating system of this application has higher integrated level promptly, compact structure, and occupation space is little.

Description

Cleaning robot and cleaning device and lifting device applied to same

Technical Field

The application relates to the technical field of cleaning equipment, in particular to a cleaning robot and a cleaning device and a lifting device applied by the cleaning robot.

Background

With the development of household intelligence, more and more consumers choose to use cleaning robots with wiping pieces to clean daily household living environments. At present, a cleaning robot with a wiping piece can be mainly divided into two types, namely a rotatable cleaning cloth and a non-rotatable flat wiping cleaning cloth, so that the cleaning robot cleans the ground while cleaning and removing dust on the ground.

When the cleaning robot works on cleaning surfaces such as carpets, the cleaning cloth is prevented from wetting the carpets, and even the rotating cleaning cloth can damage the carpets. Therefore, cleaning robots in the market lift up the cleaning cloth by arranging the lifting mechanism and then clean, so that the process that the cleaning robots return to the base station to disassemble the cleaning cloth is omitted, and the problem of secondary pollution caused by dirty cleaning cloth in the process that the cleaning robots return to the base station after cleaning is finished can be avoided; cleaning machines people can increase the ground clearance of afterbody when cleaning machines people hinders through lifting up the rag to promote cleaning machines people and hinder the ability more, and when cleaning machines people returns the basic station, can reduce cleaning machines people's the inbound degree of difficulty.

However, the lifting mechanism applied to the cleaning robot in the market is not suitable for the rotatable rag, and the integration level of the lifting mechanism is low due to the unreasonable design of the lifting mechanism, so that the cleaning robot needs to occupy too much internal space.

SUMMERY OF THE UTILITY MODEL

The application provides a cleaning machines people and cleaning device, elevating gear who uses thereof, this application elevating system can be applicable to rotatable clean subassembly to higher integrated level has.

The present application provides a cleaning device. The cleaning device includes: the driving assembly comprises a driving motor and a power output shaft in transmission connection with the driving motor; the cleaning assembly receives torque from the driving motor through the power output shaft so as to clean the surface to be cleaned; a lifting assembly in driving connection with the cleaning assembly, wherein the lifting assembly is configured to actuate the cleaning assembly to move away from the surface to be cleaned in response to torque from the drive motor; the selective transmission part is arranged between the power output shaft and the lifting component and is used for selectively connecting the power output shaft and the lifting component in a transmission way; when the driving motor outputs a first torque in a first rotating direction, the selective transmission piece is disconnected from the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the selective transmission piece is used for driving the power output shaft to be in transmission connection with the lifting assembly, so that the lifting assembly receives the second torque and then drives the cleaning assembly to move towards the direction far away from the surface to be cleaned.

In one embodiment of the present application, the first torque is in a direction opposite to the second torque.

In an embodiment of the present application, a lift assembly includes: the first bearing piece is selectively in transmission connection with the power output shaft through the selective transmission piece; the second bearing piece is in transmission fit with the first bearing piece through a transmission mechanism and is in transmission connection with the cleaning component; wherein, first carrier receives can drive second carrier and hold the piece and move towards the direction of keeping away from the face of waiting to clean through drive mechanism after the second moment of torsion, and when first carrier did not receive the second moment of torsion, second carrier and cleaning assembly can move towards the face of waiting to clean, and cleaning assembly holds the piece and receives first moment of torsion through the second.

In an embodiment of the application, the transmission mechanism comprises: the spiral track is arranged on the first bearing piece and extends spirally along the direction vertical to the surface to be cleaned; the rolling piece is arranged on the second bearing piece and movably arranged on the spiral track; the first bearing piece rotates after receiving the second torque, so that the spiral track drives the rolling piece to move towards the direction away from the surface to be cleaned, and when the first bearing piece does not receive the second torque, the rolling piece can move towards the surface to be cleaned along the spiral track.

In an embodiment of the present application, the spiral tracks include a first spiral track and a second spiral track, the first spiral track and the second spiral track are uniformly distributed at intervals along a circumferential direction of the first bearing member, and a spiral direction of the first spiral track is the same as a spiral direction of the second spiral track; the rolling parts comprise a first rolling part and a second rolling part, the first rolling part and the second rolling part are evenly distributed along the circumferential direction of the second bearing part at intervals, the first rolling part is movably arranged on the first spiral track, and the second rolling part is movably arranged on the second spiral track.

In an embodiment of the application, the rolling element comprises a first rolling bearing.

In an embodiment of the present application, the lifting assembly further comprises: the elastic piece is connected with the second bearing piece and used for driving the second bearing piece and the cleaning assembly to move towards the surface to be cleaned.

In an embodiment of the present application, the second bearing member includes: the lifting frame is in transmission fit with the first bearing piece through a transmission mechanism; the cleaning assembly is in transmission connection with the lifting frame through the floating shaft, and the cleaning assembly and the floating shaft can synchronously move towards or away from the surface to be cleaned along with the lifting frame; the floating shaft is further rotatably connected with the lifting frame, the cleaning assembly is further in transmission connection with the power output shaft through the floating shaft, and when the driving motor outputs the first torque, the floating shaft can rotate relative to the lifting frame, so that the driving motor drives the cleaning assembly to rotate through the floating shaft.

In one embodiment of the application, a first accommodating cavity and a second accommodating cavity which are communicated with each other are arranged inside the floating shaft, the first accommodating cavity is far away from the cleaning assembly relative to the second accommodating cavity, the cross-sectional area of the first accommodating cavity is larger than that of the second accommodating cavity, and a step surface is formed at the junction of the first accommodating cavity and the second accommodating cavity; the second carrier further comprises: the magnetic part is arranged in the first accommodating cavity and abutted against the step surface, and the cleaning assembly is detachably adsorbed to the magnetic part through the second accommodating cavity; the lifting assembly further comprises: and the elastic piece is at least partially arranged in the first accommodating cavity and abutted against the magnetic part, and is used for driving the floating shaft to move towards the surface to be cleaned.

In an embodiment of the application, the floating shaft is rotationally connected with the lifting frame through a second rolling bearing.

In an embodiment of the present application, the lifting assembly further comprises: the cover body is internally provided with a guide cavity; the first bearing piece and the second bearing piece are arranged in the guide cavity, and the guide cavity is used for guiding the second bearing piece to move towards or away from the surface to be cleaned and limiting the second bearing piece to rotate.

In an embodiment of the present application, the cleaning device further comprises: and the travel switch is arranged on the cover body and used for detecting whether the cleaning assembly moves to the limit position in the direction away from the surface to be cleaned, and the driving motor stops rotating in the second rotating direction in response to the travel switch detecting that the cleaning assembly moves to the limit position.

In one embodiment of the present application, the selective transmission member is a one-way bearing; wherein, the selective transmission spare has outer loop and inner ring, and one in outer loop and the inner ring is connected with power output shaft transmission, and the other is connected with the lifting unit transmission, and outer loop and inner ring are used for carrying out selective transmission with power output shaft and lifting unit and are connected.

In an embodiment of the present application, the driving assembly further includes: the pressing sheet is arranged on one side of the selective transmission member, which is far away from the cleaning component; wherein, power output shaft, preforming and lifting unit cooperate to enclose to establish and form spacing chamber, and the selective transmission spare is arranged in spacing chamber to the restriction selective transmission spare is in the position of the direction of the perpendicular to face of waiting to clean.

Correspondingly, the application also provides a cleaning robot. The cleaning robot includes a main body and a cleaning device, the cleaning device including: the driving assembly comprises a driving motor and a power output shaft in transmission connection with the driving motor; the cleaning assembly receives torque from the driving motor through the power output shaft so as to clean the surface to be cleaned; a lifting assembly in driving connection with the cleaning assembly, wherein the lifting assembly is configured to actuate the cleaning assembly to move away from the surface to be cleaned in response to torque from the drive motor; the selective transmission part is arranged between the power output shaft and the lifting component and is used for selectively connecting the power output shaft and the lifting component in a transmission way; when the driving motor outputs a first torque in a first rotating direction, the selective transmission piece is disconnected from the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the power output shaft and the lifting assembly are in transmission connection through the selective transmission piece, so that the lifting assembly drives the cleaning assembly to move towards the direction far away from the surface to be cleaned after receiving the second torque.

Correspondingly, this application still provides a elevating gear. This elevating gear includes: the driving assembly comprises a driving motor and a power output shaft in transmission connection with the driving motor, wherein the power output shaft is used for transmitting the torque from the driving motor to the cleaning assembly for cleaning the surface to be cleaned; a lifting assembly in transmission connection with the cleaning assembly, wherein the lifting assembly is configured to actuate the cleaning assembly to move away from the surface to be cleaned in response to torque from the drive motor; the selective transmission part is arranged between the power output shaft and the lifting component and is used for selectively connecting the power output shaft and the lifting component in a transmission way; when the driving motor outputs a first torque in a first rotating direction, the transmission piece is selected to disconnect the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the power output shaft and the lifting assembly are in transmission connection through the selective transmission piece, so that the lifting assembly drives the cleaning assembly to move towards the direction far away from the surface to be cleaned after receiving the second torque.

The beneficial effect of this application is: be different from prior art, this application provides a cleaning machines people and cleaning device, elevating gear who uses thereof. This application is when driving motor exports first moment of torsion with first direction of rotation, selects the transmission part disconnection power output shaft and is connected with the transmission between the lifting unit for take place to rotate after cleaning unit receives first moment of torsion and treat the cleaning surface with the cleanness. When the driving motor outputs a second torque in a second rotating direction, the power output shaft and the lifting assembly are in transmission connection through the selective transmission piece, so that the lifting assembly drives the cleaning assembly to move towards the direction far away from the surface to be cleaned after receiving the second torque.

In other words, when the driving motor outputs a first torque in a first rotating direction, the lifting assembly is in transmission connection with the power output shaft through the selective transmission piece so as to actuate the cleaning assembly to move towards a direction away from the surface to be cleaned, namely, the lifting assembly is actuated to lift. This application can drive the rotation of cleaning assembly in order to clean the face of waiting to clean through driving motor, means that the elevating system of this application can be applicable to rotatable cleaning assembly to this application can also actuate cleaning assembly through driving motor and rise, need not additionally to set up the mechanism that is used for driving cleaning assembly to go up and down, the elevating system of this application has higher integrated level promptly, compact structure, and occupation space is little.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

FIG. 1 is a schematic view of an embodiment of a cleaning apparatus of the present application;

FIG. 2 is an exploded view of the cleaning device of FIG. 1;

FIG. 3 isbase:Sub>A schematic cross-sectional view of the cleaning device of FIG. 1 in the direction A-A;

FIG. 4 is a schematic view of the area B of the cleaning apparatus shown in FIG. 3;

FIG. 5 is a schematic view of an embodiment of the cleaning robot of the present application;

fig. 6 is a schematic structural diagram of an embodiment of the lifting device of the present application.

Description of reference numerals:

10 cleaning device, 20 cleaning component, 30 surface to be cleaned, 40 driving component, 41 driving motor, 42 power output shaft, 421 reducer output shaft, 422 output shaft connector, 43 pressing sheet, 44 spacing cavity, 50 lifting component, 51 first bearing piece, 52 second bearing piece, 521 lifting frame, 522 floating shaft, 523 first containing cavity, 524 second containing cavity, 525 step surface, 526 magnetic component, 527 second rolling bearing, 53 transmission mechanism, 54 spiral track, 541 first spiral track, 542 second spiral track, 55 rolling piece, 551 first rolling piece, 552 second rolling piece, 56 elastic piece, 57 cover body, 571 guiding cavity, 60 selective transmission piece, 70 stroke switch, 80 host computer and 90 lifting device.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application. Furthermore, it should be understood that the detailed description and specific examples, while indicating preferred embodiments of the present application, are given by way of illustration and explanation only, and are not intended to limit the present application. In this application, unless stated to the contrary, the use of directional terms such as "upper", "lower", "left" and "right" generally refer to the upper, lower, left and right sides of the device in actual use or operation, and specifically to the orientation of the drawing figures.

The present application provides a cleaning robot, and a cleaning device and a lifting device applied thereto, which will be described in detail below. It should be noted that the following description of the embodiments is not intended to limit the preferred order of the embodiments of the present application. In the following embodiments, the descriptions of the respective embodiments have respective emphasis, and reference may be made to related descriptions of other embodiments for parts that are not described in detail in a certain embodiment.

In the prior art, a cleaning robot with a wiping piece can be mainly divided into two types, namely rotatable rag and non-rotatable flat-wiping rag, so that the cleaning robot can clean and remove dust on the ground and simultaneously wipe the ground. When the cleaning robot works on cleaning surfaces such as carpets, the cleaning cloth is prevented from wetting the carpets, and even the rotating cleaning cloth can damage the carpets. Therefore, the cleaning robot usually needs to lift up the cleaning cloth by arranging the lifting mechanism and then clean the cleaning cloth, so that the process that the cleaning robot returns to the base station to disassemble the cleaning cloth is omitted, and the problem of secondary pollution caused by dirty cleaning cloth in the process that the cleaning robot returns to the base station after cleaning is finished can be avoided; cleaning machines people can increase the ground clearance of afterbody when cleaning machines people hinders more through lifting up the rag to promote cleaning machines people and hinder more ability, and when cleaning machines people returns the basic station, can increase the guide angle of cleaning machines people and basic station bottom plate, and then reduce cleaning machines people's the inbound degree of difficulty.

However, the lifting mechanism applied to the cleaning robot in the prior art is only for the non-rotatable flat mop cloth, for example, the lifting mechanism adopting the dual-link design can only drive the flat mop cloth to lift, and the flat mop cloth does not need to rotate, so the lifting mechanism does not have the function of driving the mop cloth to rotate, that is, the lifting mechanism in the prior art cannot be applied to the rotatable mop cloth.

In view of the above, embodiments of the present disclosure provide a cleaning robot, a cleaning device and a lifting device using the same, which can solve the technical problem that a lifting mechanism of a cleaning robot in the prior art cannot be applied to a rotatable cleaning cloth, and are described in detail below.

Referring to fig. 1 to 3, fig. 1 isbase:Sub>A schematic structural diagram of an embodiment ofbase:Sub>A cleaning device of the present application, fig. 2 isbase:Sub>A schematic exploded structural diagram of the cleaning device shown in fig. 1, and fig. 3 isbase:Sub>A schematic sectional structural diagram inbase:Sub>A directionbase:Sub>A-base:Sub>A of the cleaning device shown in fig. 1.

In one embodiment, the cleaning device 10 may be applied to a cleaning robot having a cleaning function of washing, mopping, wiping, etc. The cleaning robot can automatically move on the surface 30 to be cleaned to clean and remove dust from the surface 30 to be cleaned, and the cleaning device 10 of the embodiment can also enable the cleaning robot to scrub the surface 30 to be cleaned. The surface to be cleaned 30 may be a floor, a surface to be cleaned of an object, or the like.

The cleaning device 10 includes a cleaning assembly 20, the cleaning assembly 20 being for cleaning a surface 30 to be cleaned. Specifically, when the cleaning device 10 is applied to a cleaning robot, the cleaning assembly 20 may be of a rotatable design, i.e., the cleaning assembly 20 may be rotated about its central axis to scrub the surface 30 to be cleaned. Optionally, the cleaning assembly 20 includes a wiping member such as a rotatable wipe.

The cleaning device 10 also includes a drive assembly 40. The driving assembly 40 is a core driving element of the cleaning device 10, and is used for driving the cleaning assembly 20 to rotate to clean the surface 30 to be cleaned and also for driving the cleaning assembly 20 to move up and down, which will be described in detail below. Specifically, the driving assembly 40 includes a driving motor 41 and a power output shaft 42 in transmission connection with the driving motor 41. The driving motor 41 is a core driving element of the driving assembly 40, and the power output shaft 42 is used for transmitting the torque output by the driving motor 41 to the cleaning assembly 20 so as to drive the cleaning assembly 20 to rotate and drive the cleaning assembly 20 to ascend and descend. Wherein the cleaning assembly 20 receives torque from the driving motor 41 through the power take-off shaft 42 to clean the surface to be cleaned 30.

The cleaning device 10 also includes a lift assembly 50. The lifting assembly 50 is drivingly connected to the cleaning assembly 20. The lifting assembly 50 is configured to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30, i.e., to actuate the cleaning assembly 20 to lift, in response to a torque from the drive motor 41. When the lifting assembly 50 receives torque from the driving motor 41, the lifting assembly 50 can drive the cleaning assembly 20 to move away from the surface to be cleaned 30.

It will be appreciated that movement of the cleaning assembly 20 in a direction away from the surface to be cleaned 30 means that the cleaning assembly 20 is raised and movement of the cleaning assembly 20 towards the surface to be cleaned 30 means that the cleaning assembly 20 is lowered. The lifting or lowering of the cleaning assembly 20 according to the embodiment of the present application is directed to the surface 30 to be cleaned, when the surface 30 to be cleaned is a floor, the cleaning assembly 20 is lifted or lowered relative to the surface 30 to be cleaned along a vertical direction perpendicular to the floor, and when the surface 30 to be cleaned is a surface to be cleaned of an object, or the surface 30 to be cleaned is inclined or vertically disposed relative to a horizontal plane, the cleaning assembly 20 is lifted or lowered relative to the surface 30 to be cleaned along a direction perpendicular to the surface 30 to be cleaned. As for the descending manner of the cleaning assembly 20 of the embodiment of the present application, it will be explained in detail below.

The cleaning device 10 further comprises a selective transmission 60. The selective transmission member 60 is disposed between the power output shaft 42 and the lifting assembly 50, and the selective transmission member 60 is used for selectively connecting the power output shaft 42 and the lifting assembly 50 in a transmission manner. When the selective transmission 60 drivingly connects the power output shaft 42 and the lifting assembly 50, the lifting assembly 50 is capable of actuating the cleaning assembly 20 in a direction away from the surface to be cleaned 30 in response to torque from the drive motor 41.

When the driving motor 41 outputs the first torque in the first rotation direction, that is, the driving motor 41 drives the power output shaft 42 to rotate in the first rotation direction to output the first torque, the selective transmission member 60 disconnects the transmission connection between the power output shaft 42 and the lifting assembly 50, so that the cleaning assembly 20 rotates to clean the surface to be cleaned 30 after receiving the first torque. When the driving motor 41 outputs the second torque in the second rotation direction, that is, the driving motor 41 drives the power output shaft 42 to rotate in the second rotation direction to output the second torque, the selective transmission member 60 connects the power output shaft 42 with the lifting assembly 50 in a transmission manner, so that the lifting assembly 50 receives the second torque and then actuates the cleaning assembly 20 to move away from the surface to be cleaned 30.

In the above manner, when the driving motor 41 outputs the first torque in the first rotation direction, the cleaning assembly 20 can be driven to rotate to clean the surface to be cleaned 30, and when the driving motor 41 outputs the second torque in the second rotation direction, the lifting assembly 50 is in transmission connection with the power output shaft 42 through the selective transmission member 60 to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30, i.e., to actuate the cleaning assembly 20 to lift. The present embodiment can drive the cleaning assembly 20 to rotate through the driving motor 41 to clean the surface 30 to be cleaned, which means that the lifting mechanism including the driving assembly 40, the lifting assembly 50 and the selective transmission member 60 in the present embodiment can be adapted to the rotatable cleaning assembly 20, and the present embodiment can also actuate the lifting of the cleaning assembly 20 through the driving motor 41, and there is no need to additionally provide a mechanism for driving the lifting of the cleaning assembly 20, that is, the lifting mechanism of the present embodiment has a high integration level, a compact structure and a small occupied space.

In the prior art, the cleaning robot drives the cleaning cloth to rotate through the motor so as to clean the surface to be cleaned, and the cleaning robot drives the cleaning cloth to ascend and descend through other driving elements besides the motor, for example, the cleaning cloth is driven to ascend and descend through a magnetic attraction mechanism, a connecting rod mechanism and the like, so that the structure of the cleaning robot is complicated, and the improvement of the integration level is not facilitated. The cleaning assembly 20 can be driven to rotate by the driving motor 41 to clean the surface 30 to be cleaned, the cleaning assembly is suitable for the rotatable cleaning assembly 20, the cleaning assembly 20 can be actuated to ascend by the driving motor 41, a mechanism for driving the cleaning assembly 20 to ascend and descend does not need to be additionally arranged, and the ascending and descending mechanism has high integration level.

It should be noted that the direction of the first torque is opposite to the direction of the second torque in the embodiment of the present application. Further, the first rotational direction is opposite to the second rotational direction such that the direction of the first torque is opposite to the direction of the second torque. In other words, the present embodiment drives the power output shaft 42 to output the first torque and the second torque by the forward rotation and the reverse rotation of the driving motor 41. For example, when the drive motor 41 rotates in the forward direction, the drive power output shaft 42 outputs a first torque, and when the drive motor 41 rotates in the reverse direction, the drive power output shaft 42 outputs a second torque. Of course, in other embodiments of the present application, the driving power output shaft 42 may output the first torque when the driving motor 41 rotates in the reverse direction, and the driving power output shaft 42 may output the second torque when the driving motor 41 rotates in the forward direction. Here, the forward rotation of the driving motor 41 should be understood as the clockwise rotation of the driving motor 41, and the reverse rotation of the driving motor 41 should be understood as the counterclockwise rotation of the driving motor 41.

The lifting assembly 50 of the present embodiment is described in detail below.

In one embodiment, the lifting assembly 50 includes a first carrier 51, a second carrier 52, and a transmission mechanism 53. The first carrier 51 is selectively drivingly connected to the power take-off shaft 42 via a selective transmission 60. The second bearing member 52 is in transmission fit with the first bearing member 51 through a transmission mechanism 53, and the second bearing member 52 is in transmission connection with the cleaning assembly 20, so that the second bearing member 52 and the cleaning assembly 20 can synchronously move towards or away from the surface to be cleaned 30, and the power output shaft 42 can drive the cleaning assembly 20 to rotate through the second bearing member 52 to clean the surface to be cleaned 30.

When the driving motor 41 outputs a first torque in a first rotation direction, the selective transmission member 60 disconnects the transmission connection between the power output shaft 42 and the first bearing member 51, at this time, the first bearing member 51 does not receive the first torque, the second bearing member 52 and the cleaning assembly 20 can synchronously move towards the surface to be cleaned 30, that is, the cleaning assembly 20 descends, and the cleaning assembly 20 receives the first torque through the second bearing member 52 and rotates, so as to clean the surface to be cleaned 30; when the driving motor 41 outputs a second torque in a second rotation direction, the selective transmission member 60 connects the power output shaft 42 with the first bearing member 51 in a transmission manner, and after receiving the second torque, the first bearing member 51 can drive the second bearing member 52 to move in a direction away from the surface to be cleaned 30 through the transmission mechanism 53, and at this time, the cleaning assembly 20 moves in a direction away from the surface to be cleaned 30 synchronously with the second bearing member 52.

In an embodiment, the transmission 53 comprises a helical track 54 and a rolling member 55. The spiral track 54 is provided on the first carrier 51, and the spiral track 54 extends spirally in a direction perpendicular to the surface to be cleaned 30. The rolling member 55 is disposed on the second bearing member 52, and the rolling member 55 is movably disposed on the spiral track 54. The first bearing 51 enables the rolling members 55 to move along the spiral track 54 by rotating around its central axis, and the spiral track 54 drives the rolling members 55 to move toward or away from the surface to be cleaned 30, i.e., the second bearing 52 moves toward or away from the surface to be cleaned 30. The present embodiment converts the rotational motion of the first carriage 51 into the movement of the second carriage 52 in the direction perpendicular to the surface to be cleaned 30, that is, converts the torque (second torque) output by the driving motor 41 into the driving force that drives the second carriage 52 to move in the aforementioned direction, by the cooperation of the spiral track 54 and the rolling members 55.

When the driving motor 41 outputs a first torque in a first rotating direction, the selective transmission member 60 disconnects the transmission connection between the power output shaft 42 and the first bearing member 51, the first bearing member 51 does not receive the first torque, the rolling member 55 can move towards the surface to be cleaned 30 along the spiral track 54, so that the second bearing member 52 and the cleaning assembly 20 synchronously move towards the surface to be cleaned 30, at the moment, the first bearing member 51 adaptively rotates, and the cleaning assembly 20 rotates by receiving the first torque through the second bearing member 52, so as to clean the surface to be cleaned 30; when the driving motor 41 outputs the second torque in the second rotation direction, the selective transmission member 60 drivingly connects the power output shaft 42 and the first bearing member 51, and at this time, the first bearing member 51 rotates in the opposite direction after receiving the second torque, and the rolling member 55 is driven by the spiral track 54 to move along the spiral track 54, so that the rolling member 55 drives the second bearing member 52 to move in the direction away from the surface to be cleaned 30, and at this time, the cleaning assembly 20 moves in the direction away from the surface to be cleaned 30 synchronously with the second bearing member 52.

For example, as shown in fig. 2, the spiral track 54 includes a first spiral track 541 and a second spiral track 542. The first spiral track 541 and the second spiral track 542 are uniformly spaced along the circumferential direction of the first carrier 51, and the spiral direction of the first spiral track 541 is the same as that of the second spiral track 542. The roller 55 includes a first roller 551 and a second roller 552. The first rolling members 551 and the second rolling members 552 are uniformly spaced along the circumference of the second bearing member 52, the first rolling members 551 are movably disposed on the first spiral track 541, and the second rolling members 552 are movably disposed on the second spiral track 542. In other words, as the first carrier 51 rotates, the first rolling elements 551 and the second rolling elements 552 can synchronously move along the corresponding spiral tracks 54, and the first rolling elements 551 and the second rolling elements 552 are symmetrically distributed on two sides of the first carrier 51, which is beneficial to ensure that the second carrier 52 stably moves in a direction perpendicular to the surface to be cleaned 30.

Of course, in other embodiments of the present application, the lifting assembly 50 may include a greater number of spiral tracks 54 and rolling members 55, each spiral track 54 is uniformly spaced along the circumference of the first bearing member 51, and each rolling member 55 is uniformly spaced along the circumference of the second bearing member 52, which is not limited herein.

Alternatively, the rolling member 55 includes a first rolling bearing, that is, the rolling member 55 of the present embodiment may specifically adopt a rolling bearing by which the rolling member 55 rolls along the spiral track 54 so that the rolling member 55 moves along the spiral track 54.

In one embodiment, the second carriage 52 includes a lift 521 and a floating axle 522. The lifting frame 521 is in transmission fit with the first bearing piece 51 through a transmission mechanism 53. The cleaning assembly 20 is in transmission connection with the lifting frame 521 through the floating shaft 522, and the cleaning assembly 20 and the floating shaft 522 can synchronously move towards or away from the surface to be cleaned 30 along with the lifting frame 521.

When the first carrier 51 does not receive the first torque, the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 move towards the surface to be cleaned 30 synchronously, i.e. the cleaning assembly 20 descends to clean the surface to be cleaned 30. When the first bearing member 51 rotates after receiving the second torque, the first bearing member 51 drives the lifting frame 521 to move in a direction away from the surface to be cleaned 30 through the transmission mechanism 53, so that the cleaning assembly 20 and the floating shaft 522 synchronously move in a direction away from the surface to be cleaned 30, that is, the cleaning assembly 20 ascends.

The floating shaft 522 is also rotationally connected with the lifting frame 521, and the cleaning assembly 20 is also in transmission connection with the power output shaft 42 through the floating shaft 522. When the driving motor 41 outputs the first torque, the driving motor 41 drives the floating shaft 522 to rotate through the power output shaft 42, and further drives the cleaning assembly 20 to rotate through the floating shaft 522 to clean the surface 30 to be cleaned. Moreover, when the driving motor 41 drives the floating shaft 522 to rotate, the floating shaft 522 can rotate relative to the lifting frame 521, so that the lifting frame 521 can be prevented from rotating along with the floating shaft 522 to influence the position of the cleaning assembly 20, and further avoid influencing the cleaning assembly 20 to clean the surface 30 to be cleaned.

Alternatively, the floating shaft 522 and the lifting frame 521 may be rotationally connected by a second rolling bearing 527, so that the floating shaft 522 can be synchronously moved with the lifting frame 521 toward or away from the surface to be cleaned 30, and the floating shaft 522 can be rotated relative to the lifting frame 521.

In one embodiment, the lift assembly 50 further includes a resilient member 56. The elastic member 56 is connected to the second carrier 52, and the elastic member 56 is used for driving the second carrier 52 and the cleaning assembly 20 to move toward the surface 30 to be cleaned. When the surface 30 to be cleaned is a floor surface, or the surface 30 to be cleaned is disposed obliquely with respect to the horizontal plane, that is, the cleaning assembly 20 is lifted or lowered with respect to the surface 30 to be cleaned along a vertical direction perpendicular to the floor surface, at this time, the first bearing member 51 needs to overcome the gravity of the cleaning assembly 20 and the second bearing member 52 and the elastic restoring force provided by the elastic member 56, so as to drive the cleaning assembly 20 and the second bearing member 52 to be lifted, and the cleaning assembly 20 and the second bearing member 52 are lowered at least under the action of their own gravity and the elastic restoring force provided by the elastic member 56. When the surface to be cleaned 30 is vertically disposed with respect to the horizontal plane, that is, the cleaning assembly 20 is lifted or lowered with respect to the surface to be cleaned 30 in a direction perpendicular to the surface to be cleaned 30, the first bearing member 51 needs to overcome the elastic restoring force provided by the elastic member 56 to drive the cleaning assembly 20 and the second bearing member 52 to be lifted, and the cleaning assembly 20 and the second bearing member 52 are lowered under the elastic restoring force provided by the elastic member 56.

In this way, the elastic coefficient of the elastic member 56 is selected reasonably, so that the elastic member 56 can normally drive the cleaning assembly 20 to move towards the surface 30 to be cleaned, and the cleaning assembly 20 is located at the cleaning position to clean the surface 30 to be cleaned. Wherein the cleaning assembly 20 is in the aforementioned cleaning position when the cleaning assembly 20 is moved toward the surface to be cleaned 30 to reach the surface to be cleaned 30. The dashed lines in fig. 3 illustrate not only the surface 30 to be cleaned, but also the cleaning position of the cleaning assembly 20.

Specifically, referring to fig. 4, the floating shaft 522 is provided inside with a first receiving chamber 523 and a second receiving chamber 524 which communicate with each other. The first receiving chamber 523 is distant from the cleaning assembly 20 with respect to the second receiving chamber 524. The cross-sectional area of the first receiving chamber 523 is larger than that of the second receiving chamber 524, so that a step surface 525 is formed at the boundary of the first receiving chamber 523 and the second receiving chamber 524. The cross-sections of the first receiving chamber 523 and the second receiving chamber 524 are perpendicular to the central axis of the floating shaft 522.

The elastic member 56 may be a spring or the like. At least a portion of the elastic member 56 is disposed in the first receiving chamber 523 for urging the floating shaft 522 toward the surface to be cleaned 30. In other words, the elastic member 56 is interposed between the power output shaft 42 and the floating shaft 522. When the first bearing member 51 rotates after receiving the second torque, the first bearing member 51 drives the lifting frame 521 to move in a direction away from the surface 30 to be cleaned through the transmission mechanism 53, and at this time, the elastic restoring force provided by the elastic member 56 needs to be overcome and the elastic member 56 is compressed, so that the cleaning assembly 20 and the floating shaft 522 synchronously move in a direction away from the surface 30 to be cleaned. When the first bearing member 51 does not receive the first torque, the compressed elastic member 56 is restored, so that the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 move towards the surface to be cleaned 30 synchronously at least under the elastic restoring force provided by the elastic member 56, so as to clean the surface to be cleaned 30.

In one embodiment, since the cleaning assembly 20 is used for cleaning the surface 30 to be cleaned for a long time, the cleaning assembly 20 is difficult and easy to be contaminated, and needs to be cleaned or replaced, so the cleaning assembly 20 of this embodiment is detachably disposed on the cleaning device 10.

Specifically, the cleaning assembly 20 is detachably disposed on the lifting assembly 50 by means of magnetic attraction. The second carrier 52 of the lift assembly 50 also includes a magnetic component 526. The magnetic member 526 is disposed in the first receiving cavity 523 and abuts against the step surface 525, and the cleaning assembly 20 is detachably attached to the magnetic member 526 through the second receiving cavity 524, that is, a part of the cleaning assembly 20 is embedded in the second receiving cavity 524, so that the cleaning assembly 20 is detachably attached to the magnetic member 526.

The magnetic component 526 has magnetism, and can magnetize the part of the structure of the cleaning assembly 20 embedded in the second accommodating cavity 524, so that the cleaning assembly 20 is attracted to the magnetic component 526. Since the position of the magnetic member 526 in the first receiving chamber 523 is fixed, the cleaning assembly 20 can move toward or away from the surface to be cleaned 30 with the floating shaft 522 by being attracted to the magnetic member 526. When the user desires to remove the cleaning assembly 20, the user removes the cleaning assembly 20 by overcoming the attraction force applied to the cleaning assembly 20 by the magnetic member 526. The part of the elastic member 56 disposed in the first receiving cavity 523 abuts against the magnetic member 526.

Of course, in other embodiments of the present application, the portion of the cleaning assembly 20 embedded in the second accommodating cavity 524 may also have magnetism, and the portion of the cleaning assembly 20 and the magnetic component 526 only need to be attracted to each other, so that the cleaning assembly 20 can be detachably attached to the magnetic component 526, which is not limited herein.

It should be noted that the outer peripheral surface of the floating shaft 522 at the position of the first accommodating chamber 523 is a prismatic surface, an end portion of the power output shaft 42 in transmission connection with the floating shaft 522 (i.e., an end portion of the power output shaft 42 close to the floating shaft 522) has a hole structure with an inner wall surface being a prismatic surface, and the floating shaft 522 at the position of the first accommodating chamber 523 is embedded in the hole structure, so that the outer peripheral surface of the floating shaft 522 at the position of the first accommodating chamber 523 is in transmission fit with the inner wall surface of the hole structure, and transmission connection between the power output shaft 42 and the floating shaft 522 is realized. It will be appreciated that even if the cleaning assembly 20 is moved toward the surface 30 to be cleaned to the cleaning position described above, the floating shaft 522 remains engaged with the aperture arrangement, i.e., the floating shaft 522 remains in driving connection with the power take-off shaft 42.

Similarly, the side wall surface of the second accommodating cavity 524 is a prismatic surface. The cleaning assembly 20 has a cylindrical structure for driving connection with the floating shaft 522, the outer circumferential surface of the cylindrical structure being a prismatic surface. The pillar structure is embedded in the second accommodating cavity 524, so that the outer peripheral surface of the pillar structure is in transmission fit with the side wall surface of the second accommodating cavity 524, and transmission connection between the cleaning assembly 20 and the floating shaft 522 is realized.

In one embodiment, the lift assembly 50 further includes a housing 57. The cover 57 has a guide chamber 571 therein. Wherein the first carrier 51 and the second carrier 52 are provided in the guide chamber 571. The guide cavity 571 is used for guiding the second supporting member 52 to move towards or away from the surface 30 to be cleaned, and is favorable for the second supporting member 52 to stably drive the cleaning assembly 20 to move towards or away from the surface 30 to be cleaned, so as to be favorable for ensuring the stability of the lifting process of the cleaning assembly 20. Moreover, the guiding chamber 571 is further configured to limit the rotation of the second carrier 52, specifically, the rotation of the lifting frame 521, which may cause an adverse effect on the lifting process of the second carrier 52 if the lifting frame 521 is allowed to rotate in this embodiment.

The housing 57 also provides a mounting location for connection to a main unit 80 of the cleaning robot (described below), i.e., the cleaning device 10 of the present embodiment is connected to the main unit 80 of the cleaning robot through the housing 57. The connection between the cover 57 and the main unit 80 of the cleaning robot includes, but is not limited to, a screw, a snap, a rivet, and the like, and is not limited herein.

In one embodiment, the cleaning device 10 further includes a travel switch 70. A travel switch 70 is provided on the housing 57 for detecting whether the cleaning assembly 20 has moved to an extreme position in a direction away from the surface to be cleaned 30. The drive motor 41 stops rotating in the second rotational direction in response to the travel switch 70 detecting that the cleaning assembly 20 has moved to the limit position.

When the driving motor 41 outputs the second torque in the second rotation direction, the selective transmission member 60 drivingly connects the power output shaft 42 and the lifting assembly 50, so that the lifting assembly 50 receives the second torque and then actuates the cleaning assembly 20 to move away from the surface to be cleaned 30. At the same time, the travel switch 70 detects whether the cleaning assembly 20 is moved to an extreme position in a direction away from the surface to be cleaned 30. The travel switch 70 is triggered when the cleaning assembly 20 is moved to an extreme position in a direction away from the surface to be cleaned 30, i.e., the travel switch 70 detects that the cleaning assembly 20 is moved to the extreme position. The drive motor 41 stops rotating in the second rotational direction in response to the travel switch 70 detecting that the cleaning assembly 20 has moved to the limit position.

It should be noted that during the rotation of the driving motor 41 in the second rotation direction, the cleaning assembly 20 is lifted by the actuation of the lifting assembly 50, and the cleaning assembly 20 is adaptively rotated by the second torque. Since the cleaning assembly 20 does not need to rotate to perform the cleaning operation after ascending, as the driving motor 41 stops rotating in the second rotation direction, the cleaning assembly 20 correspondingly stops rotating.

In one embodiment, the selective transmission member 60 may be a one-way bearing. Specifically, the selection transmission 60 has an outer ring and an inner ring, one of which is drivingly connected to the power take-off shaft 42 and the other of which is drivingly connected to the lift assembly 50. The outer and inner rings are used to selectively drivingly connect the power take-off shaft 42 to the lift assembly 50. The outer ring and the inner ring are configured to establish a drive connection between the outer ring and the inner ring in only one rotational direction. When the inner ring rotates in one rotation direction relative to the outer ring, the inner ring is in transmission connection with the outer ring so as to connect the power output shaft 42 with the lifting assembly 50 in transmission, and the torque output by the power output shaft 42 can be transmitted to the lifting assembly 50. When the inner ring rotates relative to the outer ring in the direction opposite to the rotating direction, the inner ring and the outer ring are in an idle rotation state, at this time, the outer ring and the inner ring are disconnected from the transmission connection between the power output shaft 42 and the lifting assembly 50, and the torque output by the power output shaft 42 cannot be transmitted to the lifting assembly 50.

When the driving motor 41 outputs a second torque in a second rotation direction, the inner ring is in transmission connection with the outer ring, and the selective transmission member 60 is in transmission connection with the power output shaft 42 and the lifting assembly 50, so that the lifting assembly 50 receives the second torque and then actuates the cleaning assembly 20 to move in a direction away from the surface to be cleaned 30. Until the cleaning assembly 20 moves to the limit position in the direction away from the surface to be cleaned 30, the driving motor 41 stops to continue rotating in the second rotating direction, at this time, the inner ring and the outer ring of the selective transmission member 60 are still in the transmission connection state, and the cleaning assembly 20 can be kept at the current position by keeping the driving motor 41 in the rotation stop state. Only when the drive motor 41 is rotated in the first direction of rotation, the drive connection between the inner ring and the outer ring is released, and the cleaning assembly 20 is lowered by moving it towards the surface 30 to be cleaned.

Of course, in other embodiments of the present application, the selective transmission member 60 is not limited to a one-way bearing, for example, the selective transmission member 60 may selectively connect the power output shaft 42 to the lifting assembly 50 through a transmission mechanism 53 such as a gear mechanism, a link mechanism, etc., and is not limited thereto.

In one embodiment, the drive assembly 40 further includes a pressure plate 43. The pressing piece 43 is provided on the side of the selective transmission member 60 facing away from the cleaning assembly 20. The power output shaft 42, the pressing plate 43 and the lifting assembly 50 are cooperatively enclosed to form a limiting cavity 44, and the selective transmission member 60 is arranged in the limiting cavity 44 to limit the position of the selective transmission member 60 in the direction perpendicular to the surface to be cleaned 30, i.e. to prevent the selective transmission member 60 from moving in the direction.

Specifically, the drive assembly 40 also includes a speed reducer (not identified). The driving motor 41 is in transmission connection with the power output shaft 42 through a speed reducer. The working principle of the speed reducer belongs to the understanding range of the technicians in the field, and the description is omitted here. Power take-off shaft 42 includes a reducer output shaft 421 and an output shaft connection 422. The driving motor 41, the reducer output shaft 421 and the output shaft connector 422 are sequentially connected in a transmission manner. The selective transmission member 60 is disposed between the output shaft connection member 422 and the lifting assembly 50, and the selective transmission member 60 is used for selectively connecting the output shaft connection member 422 and the lifting assembly 50 in a transmission manner. Also, the cleaning assembly 20 receives torque from the driving motor 41 through the output shaft connection 422 to clean the surface to be cleaned 30. The floating shaft 522 described in the above embodiments is in transmission connection with the output shaft connector 422, that is, the output shaft connector 422 is sleeved on the outer periphery of the floating shaft 522 and is in transmission fit with the outer peripheral surface of the floating shaft 522.

The reducer output shaft 421 and the output shaft connector 422 can be locked by fasteners such as screws and bolts, so that the reducer output shaft 421 and the output shaft connector 422 are in transmission connection. The outer peripheral surface of the output shaft coupler 422 is a cylindrical surface that is in driving engagement with the inner ring of the selective transmission member 60. The outer ring of the selective transmission member 60 is embedded in the first carrier 51 and is in transmission fit with the first carrier 51, wherein the outer ring serves as an implant of the first carrier 51, and the two can be regarded as a whole. The output shaft connecting member 422, the pressing piece 43 and the first bearing member 51 are cooperatively enclosed to form a limiting cavity 44, and the selective transmission member 60 is disposed in the limiting cavity 44 to limit the position of the selective transmission member 60 in the direction perpendicular to the surface 30 to be cleaned, i.e., to prevent the selective transmission member 60 from moving in the direction.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a cleaning robot according to an embodiment of the present disclosure.

In one embodiment, the cleaning robot includes a main body 80 and a cleaning device 10. The main body 80 is a main body part of the cleaning robot except the cleaning device 10. Further, the main body 80 is provided with a mechanism, such as a roller, for driving the cleaning robot to travel. The main body 80 may be provided with a wiping member such as a rolling brush, and the main body 80 may have a dust suction function. In the process of cleaning the surface to be cleaned 30 by the cleaning robot, the main machine 80 cleans and removes dust from the surface to be cleaned 30, and the cleaning device 10 cooperates with the main machine 80 to clean the surface to be cleaned 30.

The cleaning device 10 includes a driving assembly 40, and the driving assembly 40 includes a driving motor 41 and a power output shaft 42 in transmission connection with the driving motor 41. The cleaning device 10 further comprises a cleaning assembly 20, the cleaning assembly 20 receiving torque from a drive motor 41 through a power take-off shaft 42 to clean the surface to be cleaned 30. The cleaning apparatus 10 further comprises a lifting assembly 50, the lifting assembly 50 being in driving connection with the cleaning assembly 20, wherein the lifting assembly 50 is configured to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30 in response to a torque from the drive motor 41. The cleaning device 10 further includes a selective transmission member 60, the selective transmission member 60 being disposed between the power take-off shaft 42 and the lifting assembly 50, the selective transmission member 60 being configured to selectively drivingly connect the power take-off shaft 42 to the lifting assembly 50. When the driving motor 41 outputs a first torque in a first rotation direction, the selective transmission member 60 disconnects the transmission connection between the power output shaft 42 and the lifting assembly 50, so that the cleaning assembly 20 rotates to clean the surface to be cleaned 30 after receiving the first torque; when the driving motor 41 outputs a second torque in a second rotating direction, the selective transmission member 60 drivingly connects the power output shaft 42 and the lifting assembly 50, so that the lifting assembly 50 receives the second torque and then actuates the cleaning assembly 20 to move away from the surface to be cleaned 30.

It should be noted that the cleaning device 10 of the present embodiment has been described in detail in the above embodiments, and thus, the description thereof is omitted.

Referring to fig. 6, fig. 6 is a schematic structural diagram of an embodiment of the lifting device of the present application.

In one embodiment, the lifting device 90 comprises a driving assembly 40, the driving assembly 40 comprises a driving motor 41 and a power output shaft 42 in transmission connection with the driving motor 41, wherein the power output shaft 42 is used for transmitting the torque from the driving motor 41 to the cleaning assembly 20 for cleaning the surface to be cleaned 30. The lifting device 90 further comprises a lifting assembly 50, the lifting assembly 50 being adapted to be in driving connection with the cleaning assembly 20, wherein the lifting assembly 50 is configured to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30 in response to a torque from the drive motor 41. The lifting device 90 further comprises a selective transmission member 60, the selective transmission member 60 is disposed between the power output shaft 42 and the lifting assembly 50, and the selective transmission member 60 is used for selectively connecting the power output shaft 42 and the lifting assembly 50 in a transmission manner. When the driving motor 41 outputs a first torque in a first rotation direction, the selective transmission member 60 disconnects the transmission connection between the power output shaft 42 and the lifting assembly 50, so that the cleaning assembly 20 rotates to clean the surface to be cleaned 30 after receiving the first torque; when the driving motor 41 outputs a second torque in a second rotating direction, the selective transmission member 60 drivingly connects the power output shaft 42 and the lifting assembly 50, so that the lifting assembly 50 receives the second torque and then actuates the cleaning assembly 20 to move away from the surface to be cleaned 30.

It should be noted that the driving assembly 40, the lifting assembly 50 and the selective transmission member 60 of the present embodiment have been described in detail in the above embodiments, and are not described herein again.

The technical solution provided in the embodiments of the present application is described below with reference to specific application scenarios.

The application scene one:

the cleaning device 10 is independent of the cleaning robot. The cleaning apparatus 10 may be detachably provided to the cleaning robot as a whole. The cleaning device 10 assists the cleaning robot in cleaning the surface 30 to be cleaned in the process of cleaning the surface 30 to be cleaned by the cleaning robot.

The cleaning device 10 includes a driving assembly 40, and the driving assembly 40 includes a driving motor 41 and a power output shaft 42 in transmission connection with the driving motor 41. The cleaning device 10 further comprises a cleaning assembly 20, the cleaning assembly 20 receiving torque from a drive motor 41 through a power take-off shaft 42 to clean the surface to be cleaned 30. The cleaning apparatus 10 further comprises a lifting assembly 50, the lifting assembly 50 being in driving connection with the cleaning assembly 20, wherein the lifting assembly 50 is configured to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30 in response to a torque from the drive motor 41. The cleaning device 10 further includes a selective transmission member 60, the selective transmission member 60 being disposed between the power take-off shaft 42 and the lifting assembly 50, the selective transmission member 60 being configured to selectively drivingly connect the power take-off shaft 42 to the lifting assembly 50.

When the driving motor 41 outputs a first torque in a first rotational direction, the selective transmission 60 disconnects the transmission connection between the power take-off shaft 42 and the lifting assembly 50. At least under the action of the self-gravity and the elastic restoring force provided by the elastic member 56, the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 are synchronously moved towards the surface 30 to be cleaned, i.e. the cleaning assembly 20 is lowered. The first carriage 51 is now adapted to rotate to allow the rolling member 55 to move along the helical track 54 towards the surface to be cleaned 30, i.e. to allow the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 to move towards the surface to be cleaned 30. And, the cleaning assembly 20 rotates upon receiving the first torque to clean the surface to be cleaned 30.

When the driving motor 41 outputs the second torque in the second rotation direction, the selective transmission element 60 connects the power output shaft 42 with the lifting assembly 50 in a transmission manner, and the first bearing element 51 rotates after receiving the second torque, so as to drive the rolling element 55 to move along the spiral track 54 and in a direction away from the surface to be cleaned 30, so that the rolling element 55 overcomes the elastic restoring force provided by the elastic element 56 to drive the cleaning assemblies 20, the lifting frame 521 and the floating shaft 522 to move in a direction away from the surface to be cleaned 30. Until the cleaning assembly 20 moves to the limit position in a direction away from the surface to be cleaned 30, the travel switch 70 is triggered, and the drive motor 41 stops rotating in the second rotational direction in response to the travel switch 70 detecting that the cleaning assembly 20 moves to the limit position.

In this way, when the driving motor 41 outputs a first torque in a first rotating direction, the cleaning assembly 20 can be driven to rotate to clean the surface 30 to be cleaned, and when the driving motor 41 outputs a second torque in a second rotating direction, the lifting assembly 50 is in transmission connection with the power output shaft 42 through the selective transmission member 60 to actuate the cleaning assembly 20 to move away from the surface 30 to be cleaned, i.e., to actuate the cleaning assembly 20 to lift. The cleaning device 10 can drive the cleaning assembly 20 to rotate through the driving motor 41 to clean the surface 30 to be cleaned, which means that the lifting mechanism including the driving assembly 40, the lifting assembly 50 and the selective transmission member 60 can be adapted to the rotatable cleaning assembly 20, and the cleaning assembly 20 can be actuated to ascend through the driving motor 41, without additionally providing a mechanism for driving the cleaning assembly 20 to ascend and descend, i.e. the lifting mechanism has high integration level, compact structure and small occupied space.

Application scenario two:

the cleaning robot includes a main body 80 and a cleaning device 10. The main body 80 is provided with a mechanism, such as a roller, for driving the cleaning robot to travel. The main body 80 may be provided with a wiping member such as a rolling brush, and the main body 80 may have a dust suction function. In the process of cleaning the surface to be cleaned 30 by the cleaning robot, the main machine 80 cleans and removes dust from the surface to be cleaned 30, and the cleaning device 10 cooperates with the main machine 80 to clean the surface to be cleaned 30.

When the driving motor 41 outputs a first torque in a first rotational direction, the selective transmission 60 disconnects the transmission connection between the power take-off shaft 42 and the lifting assembly 50. At least under the effect of self-gravity and the elastic restoring force provided by the elastic member 56, the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 are synchronously moved towards the surface 30 to be cleaned, i.e. the cleaning assembly 20 is lowered. The first carriage 51 is now adapted to rotate to allow the roller 55 to move along the helical track 54 towards the surface to be cleaned 30, i.e. to allow the cleaning assembly 20, the crane 521 and the floating shaft 522 to move towards the surface to be cleaned 30. And, the cleaning assembly 20 rotates upon receiving the first torque to clean the surface to be cleaned 30.

When the driving motor 41 outputs the second torque in the second rotation direction, the selective transmission element 60 connects the power output shaft 42 with the lifting assembly 50 in a transmission manner, and the first bearing element 51 rotates after receiving the second torque to drive the rolling element 55 to move along the spiral track 54 and in a direction away from the surface to be cleaned 30, so that the rolling element 55 overcomes the elastic restoring force provided by the elastic element 56 to drive the cleaning assembly 20, the lifting frame 521 and the floating shaft 522 to move in a direction away from the surface to be cleaned 30. Until the cleaning assembly 20 moves to the limit position in a direction away from the surface to be cleaned 30, the travel switch 70 is triggered, and the drive motor 41 stops rotating in the second rotational direction in response to the travel switch 70 detecting that the cleaning assembly 20 moves to the limit position.

In this way, when the driving motor 41 outputs a first torque in a first rotating direction, the cleaning assembly 20 can be driven to rotate to clean the surface 30 to be cleaned, and when the driving motor 41 outputs a second torque in a second rotating direction, the lifting assembly 50 is in transmission connection with the power output shaft 42 through the selective transmission member 60 to actuate the cleaning assembly 20 to move away from the surface 30 to be cleaned, i.e., to actuate the cleaning assembly 20 to lift. The cleaning device 10 can drive the cleaning assembly 20 to rotate through the driving motor 41 to clean the surface 30 to be cleaned, which means that the lifting mechanism including the driving assembly 40, the lifting assembly 50 and the selection transmission member 60 can be adapted to the rotatable cleaning assembly 20, and the cleaning assembly 20 can be driven to lift through the driving motor 41, without additionally providing a mechanism for driving the cleaning assembly 20 to lift, i.e. the lifting mechanism has high integration level, compact structure and small occupied space.

Application scenario three:

the lifting device 90 is used as an independent mechanism and is used for cooperating with the cleaning assembly 20 to drive the cleaning assembly 20 to rotate so as to clean the surface 30 to be cleaned and drive the cleaning assembly 20 to lift. Specifically, the lifting device 90 includes a driving assembly 40, and the driving assembly 40 includes a driving motor 41 and a power output shaft 42 in transmission connection with the driving motor 41, wherein the power output shaft 42 is used for transmitting the torque from the driving motor 41 to the cleaning assembly 20. The lifting device 90 further comprises a lifting assembly 50, the lifting assembly 50 being adapted to be in driving connection with the cleaning assembly 20, wherein the lifting assembly 50 is configured to actuate the cleaning assembly 20 to move away from the surface to be cleaned 30 in response to a torque from the drive motor 41. The lifting device 90 further comprises a selective transmission member 60, the selective transmission member 60 is disposed between the power output shaft 42 and the lifting assembly 50, and the selective transmission member 60 is used for selectively connecting the power output shaft 42 and the lifting assembly 50 in a transmission manner.

In this way, when the driving motor 41 outputs a first torque in a first rotating direction, the cleaning assembly 20 can be driven to rotate to clean the surface 30 to be cleaned, and when the driving motor 41 outputs a second torque in a second rotating direction, the lifting assembly 50 is in transmission connection with the power output shaft 42 through the selective transmission member 60 to actuate the cleaning assembly 20 to move away from the surface 30 to be cleaned, i.e., to actuate the cleaning assembly 20 to lift. The lifting device 90 can drive the cleaning assembly 20 to rotate through the driving motor 41 to clean the surface 30 to be cleaned, which means that the lifting mechanism including the driving assembly 40, the lifting assembly 50 and the selection transmission member 60 can be applied to the rotatable cleaning assembly 20, and the cleaning assembly 20 can be driven to ascend through the driving motor 41, without additionally providing a mechanism for driving the cleaning assembly 20 to ascend and descend, i.e. the lifting mechanism has high integration level, compact structure and small occupied space.

The cleaning robot and the cleaning device and the lifting device applied thereto provided by the present application are described in detail above, and specific examples are applied herein to illustrate the principle and the embodiment of the present application, and the description of the above embodiments is only used to help understand the method and the core idea of the present application; meanwhile, for a person skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A cleaning device, comprising:

the driving assembly comprises a driving motor and a power output shaft in transmission connection with the driving motor;

the cleaning assembly receives torque from the driving motor through the power output shaft so as to clean a surface to be cleaned;

a lifting assembly in driving connection with the cleaning assembly, wherein the lifting assembly is configured to actuate the cleaning assembly to move away from a surface to be cleaned in response to torque from the drive motor; and

the selective transmission part is arranged between the power output shaft and the lifting component and is used for selectively connecting the power output shaft and the lifting component in a transmission way;

when the driving motor outputs a first torque in a first rotating direction, the selective transmission part disconnects the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the selective transmission piece enables the power output shaft to be in transmission connection with the lifting assembly, so that the lifting assembly receives the second torque and then actuates the cleaning assembly to move towards a direction far away from a surface to be cleaned.

2. The cleaning apparatus of claim 1,

the first torque is in a direction opposite to the second torque.

3. The cleaning device of claim 1 or 2,

the lifting assembly comprises:

the first bearing piece is selectively connected with the power output shaft in a transmission manner through the selective transmission piece;

the second bearing piece is in transmission fit with the first bearing piece through a transmission mechanism and is in transmission connection with the cleaning assembly;

the first bearing piece can drive the second bearing piece to move towards the direction far away from the surface to be cleaned through the transmission mechanism after receiving the second torque, and when the first bearing piece does not receive the second torque, the second bearing piece and the cleaning assembly can move towards the surface to be cleaned, and the cleaning assembly receives the first torque through the second bearing piece.

4. The cleaning apparatus of claim 3,

the transmission mechanism includes:

the spiral track is arranged on the first bearing piece and extends spirally along the direction vertical to the surface to be cleaned;

the rolling piece is arranged on the second bearing piece and movably arranged on the spiral track;

the first bearing piece rotates after receiving the second torque, so that the spiral track drives the rolling piece to move towards the direction away from the surface to be cleaned, and when the first bearing piece does not receive the second torque, the rolling piece can move towards the surface to be cleaned along the spiral track.

5. The cleaning device of claim 4,

the spiral tracks comprise a first spiral track and a second spiral track, the first spiral track and the second spiral track are uniformly distributed at intervals along the circumferential direction of the first bearing piece, and the spiral direction of the first spiral track is the same as that of the second spiral track;

the rolling parts comprise a first rolling part and a second rolling part, the first rolling part and the second rolling part are evenly distributed along the circumferential direction of the second bearing part at intervals, the first rolling part is movably arranged on the first spiral track, and the second rolling part is movably arranged on the second spiral track.

6. The cleaning apparatus of claim 4,

the rolling member includes a first rolling bearing.

7. The cleaning apparatus of claim 3,

the lifting assembly further comprises:

and the elastic piece is connected with the second bearing piece and used for driving the second bearing piece and the cleaning assembly to move towards the surface to be cleaned.

8. The cleaning apparatus of claim 3,

the second carrier includes:

the lifting frame is in transmission fit with the first bearing piece through the transmission mechanism;

the cleaning assembly is in transmission connection with the lifting frame through the floating shaft, and the cleaning assembly and the floating shaft can synchronously move towards or away from a surface to be cleaned along with the lifting frame;

the floating shaft is further connected with the lifting frame in a rotating mode, the cleaning assembly is further connected with the power output shaft through the floating shaft in a transmission mode, when the driving motor outputs the first torque, the floating shaft can rotate relative to the lifting frame, and therefore the driving motor drives the cleaning assembly to rotate through the floating shaft.

9. The cleaning device of claim 8,

a first accommodating cavity and a second accommodating cavity which are communicated with each other are arranged in the floating shaft, the first accommodating cavity is far away from the cleaning assembly relative to the second accommodating cavity, the cross section area of the first accommodating cavity is larger than that of the second accommodating cavity, and a step surface is formed at the junction of the first accommodating cavity and the second accommodating cavity;

the second carrier further comprises:

the magnetic part is arranged in the first accommodating cavity and abutted against the step surface, and the cleaning assembly is detachably adsorbed to the magnetic part through the second accommodating cavity;

the lifting assembly further comprises:

and the elastic piece is at least partially arranged in the first accommodating cavity and abutted against the magnetic part, and is used for driving the floating shaft to move towards the surface to be cleaned.

10. The cleaning apparatus of claim 8,

the floating shaft is rotatably connected with the lifting frame through a second rolling bearing.

11. The cleaning apparatus of claim 3,

the lifting assembly further comprises:

the cover body is internally provided with a guide cavity;

the first bearing piece and the second bearing piece are arranged in the guide cavity, and the guide cavity is used for guiding the second bearing piece to move towards or away from the surface to be cleaned and limiting the second bearing piece to rotate.

12. The cleaning device of claim 11,

the cleaning device further includes:

and the travel switch is arranged on the cover body and used for detecting whether the cleaning assembly moves to an extreme position in a direction away from the surface to be cleaned, and the driving motor stops rotating in the second rotating direction in response to the travel switch detecting that the cleaning assembly moves to the extreme position.

13. The cleaning device of claim 1 or 2,

the selective transmission part is a one-way bearing;

the selective transmission part is provided with an outer ring and an inner ring, one of the outer ring and the inner ring is in transmission connection with the power output shaft, the other of the outer ring and the inner ring is in transmission connection with the lifting assembly, and the outer ring and the inner ring are used for selectively connecting the power output shaft with the lifting assembly in a transmission way.

14. The cleaning device of claim 1 or 2,

the drive assembly further includes:

the pressing sheet is arranged on one side, away from the cleaning component, of the selective transmission part;

the power output shaft, the pressing sheet and the lifting assembly are matched and surrounded to form a limiting cavity, and the selective transmission member is arranged in the limiting cavity to limit the position of the selective transmission member in the direction perpendicular to the surface to be cleaned.

15. A cleaning robot comprising a main body and a cleaning device, the cleaning device comprising:

when the driving motor outputs a first torque in a first rotating direction, the selective transmission part disconnects the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the selective transmission part is used for driving and connecting the power output shaft and the lifting assembly, so that the lifting assembly receives the second torque and then actuates the cleaning assembly to move towards a direction far away from the surface to be cleaned.

16. A lifting device, comprising:

the driving assembly comprises a driving motor and a power output shaft in transmission connection with the driving motor, wherein the power output shaft is used for transmitting the torque from the driving motor to the cleaning assembly for cleaning the surface to be cleaned;

a lifting assembly in driving connection with the cleaning assembly, wherein the lifting assembly is configured to actuate the cleaning assembly to move away from the surface to be cleaned in response to torque from the drive motor; and

when the driving motor outputs a first torque in a first rotating direction, the selective transmission part disconnects the transmission connection between the power output shaft and the lifting assembly, so that the cleaning assembly rotates after receiving the first torque to clean the surface to be cleaned; when the driving motor outputs a second torque in a second rotating direction, the selective transmission part is used for driving and connecting the power output shaft and the lifting assembly, so that the lifting assembly receives the second torque and then drives the cleaning assembly to move towards a direction far away from the surface to be cleaned.