Adjusting unit and mobile cleaner

Abstract

The present disclosure provides a regulating unit and a mobile cleaner. The regulating unit comprises a power input shaft, a worm part, a transmission assembly and an eccentric wheel; the power input shaft is used to receive torque input to rotate around its axis of rotation; the worm part is arranged on the part of the power input shaft other than the input end; the transmission assembly is rotatably arranged on the brush roller unit and is arranged to mesh with the worm part; the eccentric wheel is connected with the output shaft of the transmission assembly and is configured to be fixed relative to the output shaft and to slidably abut the chassis assembly of the mobile cleaner when rotating; wherein during the rotation of the power input shaft, the eccentric wheel changes in rotation to change the lift of the brush roller assembly relative to the chassis assembly of the mobile cleaner.

Description

Technical Field

[0001] This disclosure relates to an adjustment unit and a portable cleaner. Background Technology

[0002] With technological advancements, more and more families are using home cleaning robots to clean their indoor floors. During the cleaning process, these robots are programmed to automatically perform cleaning tasks on the surfaces to be cleaned.

[0003] Existing household cleaning robots generally include a side brush assembly and a roller brush assembly. The side brush assembly agitates the dirt on the surface to be cleaned, and the roller brush assembly further agitates the dirt, which is then sucked into the dust collection box and other components.

[0004] However, when a home cleaning robot encounters liquid on the surface to be cleaned, or is operating in pure wet mopping mode, or passes through a carpet on its way back to the base station, it usually needs to lift the roller brush to remove it from the ground.

[0005] To raise and lower the roller brush, existing technologies typically employ a separate drive unit. However, considering that mobile cleaners have multiple components that need to be driven to rotate, existing mobile cleaners often include multiple drive units, which increases their cost and makes them more difficult to control.

[0006] Therefore, it is necessary to design an adjustment unit for a mobile cleaner to accommodate a drive device that enables the rotation and lifting of the brush roller component. Utility Model Content

[0007] This disclosure provides an adjustment unit and a portable cleaner.

[0008] According to one aspect of this disclosure, an adjustment unit is provided for a mobile cleaner to adjust the distance between a brush roller component of the brush roller unit of the mobile cleaner and the surface to be cleaned, comprising:

[0009] A power input shaft, which receives torque input and rotates about its axis of rotation;

[0010] The worm gear portion is disposed on the portion of the power input shaft other than the input end;

[0011] A transmission assembly, rotatably disposed on the brush roller unit and configured to mesh with the worm gear portion; and

[0012] An eccentric wheel is connected to the output shaft of the transmission assembly, configured to be fixed relative to the output shaft, and arranged to slidably abut against the chassis assembly of the mobile cleaner when rotating;

[0013] During the rotation of the power input shaft, the eccentric wheel rotates to change the lift of the brush roller component relative to the chassis assembly of the mobile cleaner.

[0014] According to at least one embodiment of the adjustment unit of this disclosure, the eccentric wheel includes a rotation axis, and the rotation axis of the eccentric wheel is the same as the rotation axis of the output shaft of the transmission assembly.

[0015] According to at least one embodiment of the adjustment unit of this disclosure, the vertical distance between the rotation axis of the eccentric wheel and the outer periphery of the eccentric wheel is between 5 mm and 12 mm.

[0016] According to at least one embodiment of the adjustment unit of this disclosure, the vertical distance between the rotation axis of the eccentric wheel and the outer periphery of the eccentric wheel varies linearly.

[0017] According to at least one embodiment of the adjustment unit of this disclosure, the projection of the eccentric wheel onto a plane perpendicular to the axis of rotation is approximately elliptical.

[0018] According to at least one embodiment of the adjustment unit of the present disclosure, at least a first outer peripheral segment and a second outer peripheral segment are defined on the outer periphery of the eccentric wheel, wherein the first outer peripheral segment is at the largest distance from the rotation axis and the second outer peripheral segment is at the smallest distance from the rotation axis.

[0019] According to at least one embodiment of the adjustment unit of this disclosure, when either the first outer peripheral section or the second outer peripheral section is configured to abut against the chassis assembly of the mobile cleaner, the eccentric wheel can trigger the controller of the mobile cleaner to stop driving the input end of the power input shaft.

[0020] According to at least one embodiment of the adjustment unit of the present disclosure, at least one of the first outer peripheral segment and the second outer peripheral segment includes a planar or near-planar curved surface.

[0021] According to at least one embodiment of the adjustment unit of the present disclosure, at least a third outer peripheral segment is defined on the outer periphery of the eccentric wheel, the third outer peripheral segment is located between the first outer peripheral segment and the second outer peripheral segment, and the distance of the third outer peripheral segment from the rotation axis is located between the distance of the first outer peripheral segment from the rotation axis and the distance of the second outer peripheral segment from the rotation axis.

[0022] According to at least one embodiment of the adjustment unit of this disclosure, when the third outer peripheral segment is configured to abut against the chassis assembly of the mobile cleaner, it triggers the controller of the mobile cleaner to stop driving the input end of the power input shaft.

[0023] According to at least one embodiment of the adjustment unit of this disclosure, the third outer peripheral segment is a planar or near-planar curved surface.

[0024] According to at least one embodiment of the adjustment unit of this disclosure, the transmission assembly includes a first transmission gear and a second transmission gear, the first transmission gear is configured to mesh with a worm gear, the second transmission gear is transmissionally connected to the first transmission gear, and the eccentric wheel is fixedly connected to the second transmission gear.

[0025] According to at least one embodiment of the adjustment unit of the present disclosure, the first transmission gear includes an upper transmission gear and a lower transmission gear that are coaxially and integrally supported, the outer diameter of the upper transmission gear is larger than the outer diameter of the lower transmission gear, the upper transmission gear is configured to mesh with the worm gear portion, and the lower transmission gear is configured to mesh with the second transmission gear.

[0026] According to at least one embodiment of the adjustment unit of this disclosure, the outer diameter of the upper transmission gear is substantially the same as the outer diameter of the second transmission gear.

[0027] According to at least one embodiment of the adjustment unit of this disclosure, the rotational change of the eccentric wheel includes a rotational change of the eccentric wheel from 0 to 180°, or a rotational change of the eccentric wheel from 0 to at least 180°.

[0028] According to another aspect of this disclosure, a portable cleaner is provided, which includes the aforementioned adjustment unit. Attached Figure Description

[0029] The accompanying drawings illustrate exemplary embodiments of the present disclosure and, together with the description thereof, serve to explain the principles of the present disclosure. These drawings are included to provide a further understanding of the present disclosure and are incorporated in and constitute a part of this specification.

[0030] Figure 1 This is a structural schematic diagram of a portable cleaner according to one embodiment of the present disclosure.

[0031] Figure 2 This is a structural schematic diagram of a portable cleaner according to one embodiment of the present disclosure from another angle.

[0032] Figure 3 This is a schematic diagram of the structure of a brush roller assembly and a chassis assembly according to one embodiment of the present disclosure.

[0033] Figure 4 This is a schematic diagram of the structure of a trigger according to one embodiment of the present disclosure.

[0034] Figure 5 This is a schematic diagram of the interaction between a brush roller assembly and a trigger according to one embodiment of the present disclosure.

[0035] Figure 6 This is a schematic diagram of the structure of a brush roller assembly according to one embodiment of the present disclosure.

[0036] Figure 7 This is a structural schematic diagram of a brush roller assembly according to one embodiment of the present disclosure from another angle.

[0037] Figure 8 This is a schematic diagram of the structure of a gear unit according to one embodiment of the present disclosure.

[0038] Figure 9 This is a schematic diagram of the structure of an adjustment unit according to one embodiment of the present disclosure.

[0039] Figure 10 This is a schematic diagram of the structure of an eccentric wheel according to one embodiment of the present disclosure.

[0040] Figure 11 This is a schematic diagram of the clutch device according to one embodiment of the present disclosure.

[0041] Figure 12 This is a schematic diagram of the structure of a third gear according to one embodiment of the present disclosure.

[0042] Figure 13 This is a schematic diagram of the structure of a second clutch component according to one embodiment of the present disclosure.

[0043] Figure 14 This is a flowchart of a method for adjusting the height of the brush roller component of a mobile cleaner according to one embodiment of the present disclosure.

[0044] Figure 15 This is a flowchart of the operation method of the gear unit of a mobile cleaner according to one embodiment of the present disclosure.

[0045] Figure 16 This is a flowchart of the operation method of the gear unit of a mobile cleaner according to another embodiment of the present disclosure.

[0046] Figure 17 This is a flowchart of the operation method of the adjustment unit of a portable cleaner according to one embodiment of the present disclosure.

[0047] Figure 18This is a flowchart of an operation method for a brush roller assembly of a mobile cleaner according to one embodiment of the present disclosure.

[0048] Figure 19 This is a flowchart of an operation method for a portable cleaner according to one embodiment of the present disclosure.

[0049] Figure 20 This is a flowchart of an operation method for a portable cleaner according to another embodiment of the present disclosure.

[0050] Figure 21 This is a flowchart of an operation method for a portable cleaner according to yet another embodiment of the present disclosure. Detailed Implementation

[0051] The present disclosure will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the disclosure. Furthermore, it should be noted that, for ease of description, only the parts relevant to the present disclosure are shown in the accompanying drawings.

[0052] It should be noted that, where there is no conflict, the embodiments and features described in this disclosure can be combined with each other. The technical solutions of this disclosure will now be described in detail with reference to the accompanying drawings and embodiments.

[0053] Unless otherwise stated, the exemplary implementations / embodiments shown are to be understood as providing exemplary features of various details that provide ways in which the technical concepts of this disclosure can be implemented in practice. Therefore, unless otherwise stated, the features of various implementations / embodiments may be additionally combined, separated, interchanged and / or rearranged without departing from the technical concepts of this disclosure.

[0054] Figure 1 This is a structural schematic diagram of a portable cleaner according to one embodiment of the present disclosure. Figure 2 This is a structural schematic diagram of a portable cleaner according to one embodiment of the present disclosure from another angle.

[0055] The mobile cleaner disclosed herein can be a robotic vacuum cleaner, a robotic mop, or a combined vacuum and mop robot. The mobile cleaner is capable of autonomously moving across the surface to be cleaned to clean the surface by sucking up particles located on different parts of the surface. Figure 1 and Figure 2 As shown, the mobile cleaner disclosed herein can be a sweeping and mopping robot.

[0056] by Figure 1 and Figure 2 Taking the mobile cleaner shown as an example, let's consider the forward direction of the mobile cleaner as "forward". Figure 2 The view direction is such that the mobile cleaner moves forward from the top to one side. The direction away from the mobile cleaner's movement is backward. (Refer to...) Figure 2 In terms of the view direction, the rear of the portable cleaner refers to the lower side. Correspondingly, the direction perpendicular to the front-back direction can be defined as the left-right direction.

[0057] When the portable cleaner is in operation, it can move across a roughly horizontal surface to clean it. The direction perpendicular to the surface is called the vertical direction (hereinafter referred to as the vertical).

[0058] The mobile cleaner may include a chassis assembly 100, which forms the body of the mobile cleaner. The bottom of the chassis assembly 100 is provided with steering wheels 400 and driving wheels 500. The steering wheels 400 cooperate with the driving wheels 500 to enable the mobile cleaner to steer. The driving wheels 500 are used to drive the mobile cleaner forward or turn. The steering wheels 400 are located at the front of the chassis assembly 100, and the cleaning assembly 600 is rotatably connected to the bottom of the chassis assembly 100, thus located at the rear of the chassis assembly 100.

[0059] like Figure 2 As shown, the present disclosure provides two wheels 500, which are located approximately at the center of the chassis assembly 100 in the front-rear direction and on both sides of the chassis assembly 100 in the left-right direction. Furthermore, one steering wheel 400 is provided, which can be a caster wheel. This caster wheel is positioned at the center of the mobile cleaner in the left-right direction and near the front end of the mobile cleaner. Of course, the present disclosure also provides two or more steering wheels 400.

[0060] In actual use, the walking wheels 500 can be driven and rotated. By controlling the walking wheels 500 to rotate at a constant speed, the mobile cleaner can move forward. Correspondingly, by controlling the walking wheels 500 to rotate at different speeds, the mobile cleaner can be turned.

[0061] In this disclosure, the chassis assembly 100 is further provided with a side brush assembly 200, wherein the side brush assembly 200 can be configured as one or two; Figure 2 In the implementation shown, the side brush assembly 200 is configured as one, and the side brush assembly 200 is positioned on the right side of the front end of the chassis assembly 100; thereby, by rotating the side brush assembly 200, dirt on the surface to be cleaned can be disturbed, and the surface to be cleaned can be cleaned.

[0062] In addition, a brush roller assembly 300 is also provided on the chassis assembly 100. The brush roller assembly 300 is located at the middle position in the front-rear direction of the chassis assembly 100, and its length direction is the width direction of the chassis assembly 100. Thus, the brush roller assembly 300 can agitate the dirt on the surface to be cleaned. This dirt can be sucked into a dust box or other device by negative pressure adsorption, and the solid particles are separated in the dust box or other device, thereby realizing the cleaning operation of the surface to be cleaned.

[0063] In a preferred embodiment, a cleaning component 600 is further provided on the chassis assembly 100; in this disclosure, the cleaning component 600 is rotatably connected to the chassis assembly 100 and configured to make frictional contact with the surface to be cleaned to clean the surface. More preferably, when the mobile cleaner is in operation, cleaning liquid can be provided to the cleaning component 600, thereby enabling the cleaning component 600 to perform wet mopping of the surface to be cleaned.

[0064] Figure 3 This is a schematic diagram of the structure of a brush roller assembly and a chassis assembly according to one embodiment of the present disclosure. Figure 4 This is a schematic diagram of the structure of a trigger according to one embodiment of the present disclosure. Figure 5 This is a schematic diagram of the interaction between a brush roller assembly and a trigger according to one embodiment of the present disclosure. Figure 6 This is a schematic diagram of the structure of a brush roller assembly according to one embodiment of the present disclosure. Figure 7 This is a structural schematic diagram of a brush roller assembly according to one embodiment of the present disclosure from another angle. Figure 8 This is a schematic diagram of the structure of a gear unit according to one embodiment of the present disclosure. Figure 9 This is a schematic diagram of the structure of an adjustment unit according to one embodiment of the present disclosure. Figure 10 This is a schematic diagram of the structure of an eccentric wheel according to one embodiment of the present disclosure. Figure 11 This is a schematic diagram of the clutch device according to one embodiment of the present disclosure. Figure 12 This is a schematic diagram of the structure of a third gear according to one embodiment of the present disclosure. Figure 13 This is a schematic diagram of the structure of a second clutch component according to one embodiment of the present disclosure.

[0065] like Figures 3 to 13 As shown, the chassis assembly 100 of this disclosure has a planar portion 110 formed thereon, the planar portion 110 including a horizontally extending surface, that is, the planar portion is formed as a generally horizontal surface.

[0066] Furthermore, the chassis assembly 100 of this disclosure is also provided with a downward-facing open cavity, in which the brush roller assembly 300 is movably disposed. Specifically, the movement of the brush roller assembly 300 enables at least a portion of the brush roller assembly 300 (e.g., brush roller component 312) to rise or fall. Thus, when the brush roller component 312 rises to its maximum lift (i.e., the maximum position in the upward direction), it can move away from the surface to be cleaned, allowing the portable cleaner to pass smoothly over surfaces such as carpets. When the brush roller component 312 falls to its minimum lift (i.e., the minimum position in the downward direction), it can contact the surface to be cleaned and clean it.

[0067] The brush roller assembly 300 may include components such as a brush roller unit 310, a drive device 320, an adjustment unit 330, and a gear unit 340.

[0068] Specifically, the brush roller unit 310 of this disclosure includes components such as a housing portion 311 and a brush roller assembly 312. The housing portion 311 forms the basis for arranging other components of the brush roller assembly 300, and includes a guide member 311A. The guide member 311A ​​guides the movement of the brush roller unit 310 relative to the chassis assembly 100. In other words, the guide member 311A ​​can guide the movement of the brush roller unit 310 towards or away from the surface to be cleaned.

[0069] In this disclosure, the guide 311A ​​is coupled to the chassis assembly 100. Specifically, the guide 311A ​​is formed as an arm member, the free end of which is pivotally connected to the chassis assembly 100. Moreover, the pivot axis of the arm member relative to the chassis assembly 100 is parallel to the surface to be cleaned, thereby allowing the brush roller unit 310 to swing relative to the chassis assembly 100. Consequently, the brush roller unit 310 can maintain different distances from the surface to be cleaned, thus achieving the effect of raising and lowering the brush roller unit 310.

[0070] Although not shown in the accompanying drawings of this disclosure, those skilled in the art will recognize that the guide 311A ​​can also be configured to be slidably connected to the chassis assembly 100, thereby allowing the brush roller unit 310 to approach or move away from the surface to be cleaned by sliding the guide 311A ​​relative to the chassis assembly 100.

[0071] The housing portion 311 of this disclosure has a receiving cavity with an opening. Similar to the prior art, the opening faces downwards, i.e., towards the surface to be cleaned. Based on this, the brush roller component 312 of this disclosure is rotatably disposed in the housing portion 311. Correspondingly, a portion of the brush roller component 312 is located within the receiving cavity, i.e., within the opening of the housing portion 311. At this time, a portion of the brush roller component 312 can be located outside the opening. When the mobile cleaner is in operation, the contact between the brush roller component 312, located outside the opening, and the surface to be cleaned agitates dust and dirt on the surface, thereby achieving cleaning of the surface.

[0072] The drive device 320 disclosed herein is disposed in the housing portion 311 of the brush roller unit 310 and is used to drive the brush roller component 312 to rotate. In one specific embodiment, the drive device 320 may be a motor. In addition, the drive device 320 is disposed outside the housing portion 311, thereby preventing dust agitated by the brush roller component 312 from accumulating on the drive device 320, thus improving the service life of the drive device 320.

[0073] An adjustment unit 330 is disposed on the brush roller unit 310 and configured to drive the brush roller unit 310 to move in a direction perpendicular to the surface to be cleaned. In other words, the adjustment unit 330 can adjust the position of the brush roller unit 310 so that the brush roller unit 310 approaches or moves away from the surface to be cleaned.

[0074] The gear unit 340 of this disclosure is configured to transmit the torque of the drive device 320 to the adjustment unit 330 and the brush roller component 312 of the brush roller unit 310, respectively. That is, the gear unit 340 of this disclosure serves as a power transmission unit. Specifically, the gear unit 340 is coupled to the adjustment unit 330 through at least one clutch device 350 so as to: maintain the torque transmission from the drive device 320 to the adjustment unit 330 when the drive device 320 outputs torque in a first direction (i.e., the drive device 320 rotates in the first direction); and disengage the torque transmission from the drive device 320 to the adjustment unit 330 when the drive device 320 outputs torque in a second direction (i.e., the drive device 320 rotates in the second direction).

[0075] In other words, when the portable cleaner is in operation, under normal circumstances, the drive unit 320 rotates in the second direction, and its torque is not transmitted to the adjustment unit 330. When it is necessary to raise the brush roller unit 310, the drive unit 320 can be controlled to rotate in the first direction. At this time, the torque of the drive unit 320 can be transmitted to the adjustment unit 330, and the brush roller unit 310 is raised through the adjustment unit 330. After the brush roller unit 310 rises to the predetermined position, the drive unit 320 can be controlled to stop rotating, and the brush roller unit 310 will be in a non-working state. In other words, since the brush roller unit 310 has left the surface to be cleaned, even if the brush roller unit 310 is rotating, it can no longer clean the surface.

[0076] When the brush roller unit 310 needs to descend, the drive device 320 can be controlled to continue rotating in the first direction. At this time, the torque of the drive device 320 can be transmitted to the adjustment unit 330, and the descent of the brush roller unit 310 is achieved through the adjustment unit 330. After the brush roller unit 310 descends to the preset position, the drive device 320 can be controlled to rotate in the second direction. At this time, the power between the drive device 320 and the adjustment unit 330 will be cut off, and the drive device 320 will transmit torque only to the brush roller component 312, thereby achieving the rotation of the brush roller component 312.

[0077] Generally speaking, the gear unit 340 is connected to the drive unit 320. The gear unit 340 is configured to transmit the torque in the first direction of the drive unit 320 to the brush roller component 312 and the adjustment unit 330 when the drive unit 320 outputs torque in the first direction, so as to drive the brush roller component 312 to rotate and simultaneously drive the adjustment unit 330 to adjust the distance between the brush roller component 312 and the surface to be cleaned. When the drive unit 320 outputs torque in the second direction, the torque in the second direction output by the drive unit 320 is transmitted to the brush roller component 312 to drive the brush roller component 312 to rotate. At this time, the torque in the second direction of the drive unit 320 is not transmitted to the adjustment unit 330, and correspondingly, the distance between the brush roller component 312 and the surface to be cleaned is not adjusted.

[0078] The gear unit 340 disclosed herein includes a first gear train and a second gear train. The first gear train is disposed between the output shaft of the drive device 320 and the brush roller component 312 for transmitting power from the drive device 320 to the brush roller component 312 to actuate the brush roller component 312. The second gear train is disposed between the output shaft of the drive device 320 and the adjustment unit 330 for transmitting power from the drive device 320 to the adjustment unit 330. In other words, the first gear train of this disclosure is disposed between the output shaft of the drive unit 320 of the mobile cleaner and the brush roller unit 310 of the mobile cleaner for transmitting power from the drive unit 320 to the brush roller component 312 of the brush roller unit 310 to actuate the brush roller component 312; the second gear train is disposed between the output shaft of the drive unit 320 and the adjustment unit 330 of the mobile cleaner for selectively transmitting power from the drive unit 320 to the adjustment unit 330 of the mobile cleaner to activate the adjustment unit 330, the adjustment unit 330 being configured to adjust the distance between the brush roller unit 310 and the surface to be cleaned when activated.

[0079] Specifically, in one embodiment, the first gear train and the second gear train of this disclosure can be configured as independent transmission devices. That is, both the first gear train and the second gear train can be independently connected to the drive gear mounted on the output shaft of the drive device 320.

[0080] In another embodiment, the first gear train and the second gear train may have at least one shared gear. Alternatively, the second gear train can be considered to be drive-connected to an intermediate gear of the first gear train, thereby allowing the torque of the drive unit 320 to be transmitted to both the first and second gear trains. Correspondingly, this torque can be transmitted to the brush roller component 312 via the first gear train. This arrangement reduces the total number of gears in both the first and second gear trains, thereby reducing the manufacturing cost of the mobile cleaner.

[0081] The intermediate gear disclosed herein refers to the gear located in the middle position in the second gear train. This intermediate gear may also be referred to as the shared gear (common gear) of the first gear train and the second gear train.

[0082] In one specific embodiment, the gear unit 340 includes components such as a first gear 341, a second gear 342, a third gear 343, and an intermediate gear 344.

[0083] The first gear 341 is disposed on the output shaft of the drive device 320 and is formed as a driving gear; the second gear 342 is disposed on the rotating shaft of the brush roller component 312 and is formed as a driven gear, thereby transmitting driving force to the brush roller component 312 through the second gear 342; the third gear 343 is connected to the adjustment unit 330 for transmission; thereby transmitting torque to the adjustment unit 330 through the third gear 343.

[0084] The first gear 341, the second gear 342, and the third gear 343 are all drive-connected to the intermediate gear 344. Thus, the drive unit 320 of this disclosure first transmits power to the intermediate gear 344, and then distributes the power through the intermediate gear 344 to the second gear 342 and the third gear 343. This power is further supplied to the brush roller assembly 312 and the adjustment unit 330. Accordingly, the gear unit 340 of this disclosure has a simpler structure and a lower failure rate.

[0085] The gear unit 340 also includes a coaxial reduction gear 345, which includes a lower gear and an upper gear coaxially and integrally supported thereon. The lower gear meshes with the first gear 341, and the upper gear meshes with the intermediate gear 344. In other words, the coaxial reduction gear 345 of this disclosure forms a power transmission gear, and the number of teeth on the lower gear can be greater than the number of teeth on the upper gear, thereby the gear unit 340 of this disclosure has a certain speed reduction and torque increase effect.

[0086] The gear unit 340 includes a fourth gear 346, which meshes with both an intermediate gear 344 and a third gear 343. A second gear 342 meshes with the intermediate gear 344. Thus, through this arrangement of gears, the gear unit of this disclosure can achieve the required function while maintaining a small size.

[0087] In one embodiment of this disclosure, the second gear train includes a clutch device 350, which is configured to cut off the power transmitted from the drive device 320 to the adjustment unit 330 when the drive device 320 outputs torque in a second direction, and to restore the power transmitted from the drive device 320 to the adjustment unit 330 when the torque output in the second direction by the drive device 320 changes to torque in a first direction.

[0088] Of course, the clutch device of this disclosure may not be part of the second gear train. In this case, it can be considered that a clutch device 350 is provided in the second gear train. The clutch device 350 is configured to open or close the transmission of the second gear train according to the rotation direction of the output shaft of the drive device 320.

[0089] Positionally, the clutch device 350 is located downstream of the intermediate gear 344 and upstream of the adjustment unit 330; or, the clutch device 350 is located downstream of the second gear train and upstream of the adjustment unit 330.

[0090] In one specific embodiment, the clutch device 350 includes an axial clutch, through which automatic power transmission and interruption can be achieved. Specifically, the clutch device 350 of this disclosure can achieve the engagement and disengagement of power transmission between the drive device 320 and the adjustment unit 330 without the application of an electrical signal. Accordingly, the mobile cleaner of this disclosure has a relatively simple structure and can be easily controlled.

[0091] Positionally, the clutch device 350 of this disclosure is located downstream of the second gear train and upstream of the regulating unit 330. More specifically, the clutch device 350 is located in the second gear train, and when the drive device 320 outputs torque in the second direction, the clutch closes the power transmission of the second gear train to cut off the power from the drive device 320 to the regulating unit 330; and when the drive device 320 outputs torque in the first direction, the clutch opens the power transmission of the second gear train to transmit power from the drive device 320 to the regulating unit 330.

[0092] Specifically, such as Figures 11 to 13 As shown, the clutch device 350 includes a disc-shaped clutch gear 351 located in the second gear train (the disc-shaped clutch gear 351 can be considered as the third gear 343 mentioned above). The disc-shaped clutch gear 351 includes an upper disc gear 351A and a first clutch component 351B that are coaxially and integrally supported, and a second clutch component 352 adapted to rotatably engage with the first clutch component 351B. The upper disc gear 351A is configured to mesh directly or indirectly with the drive device 320, and the second clutch component 352 is configured to be connected to the input end of the power input shaft 331 of the adjustment unit 330.

[0093] In this disclosure, the power input shaft 331 of the adjusting unit 330 is rotatably disposed on the housing portion 311 and has an input end and an output end. The second clutch component 352 is drive-connected to the input end of the power input shaft 331, that is, the second clutch component 352 can rotate synchronously with the power input shaft 331. In a preferred embodiment, the second clutch component 352 can be drive-connected to the power input shaft 331 via a coupling.

[0094] In a preferred embodiment, the second clutch component 352 is not fixed to the coupling, but is capable of axial displacement relative to the coupling. This axial displacement of the second clutch component 352 causes the first clutch component 351B and the second clutch component 352 to separate and engage. Although not shown in the drawings, those skilled in the art will recognize that the first clutch component 351B can also undergo axial displacement, causing the first clutch component 351B and the second clutch component 352 to separate and engage.

[0095] For example, the spring force can cause the second clutch component 352 to have a tendency to move closer to the first clutch component 351B, so that the second clutch component 352 and the first clutch component 351B can be pressed tightly against each other, so that the first clutch component 351B and the second clutch component 352 can be separated and engaged.

[0096] Specifically, the first clutch component 351B includes a first sloped gradually tapered protrusion 351B1, and the second clutch component 352 includes a second sloped gradually tapered protrusion 352B. The first sloped gradually tapered protrusion 351B1 and the second sloped gradually tapered protrusion 352B are configured such that when the drive device 320 rotates in a first direction, the two are locked together to axially couple the first clutch component 351B and the second clutch component 352 together; or, when the drive device 320 rotates in a second direction, the two are unlocked to axially separate the first clutch component 351B and the second clutch component 352 to decouple them.

[0097] The first sloping, gradually tapered protrusion 351B1 includes a first mating surface 351B2, and the second sloping, gradually tapered protrusion 352B includes a second mating surface 352B2. When the first clutch component 351B and the second clutch component 352 are coupled together, the first mating surface 351B2 and the second mating surface 352B2 are in contact with each other. When the first clutch component 351B and the second clutch component 352 are axially separated, the first mating surface 351B2 and the second mating surface 352B2 are separated from each other. In a specific embodiment, both the first mating surface 351B2 and the second mating surface 352B2 are surfaces parallel to the axis of the clutch device, thereby achieving stable power transmission between the first clutch component 351B and the second clutch component 352 through the engagement of the first mating surface 351B2 and the second mating surface 352B2.

[0098] Based on the above structure, the clutch device 350 of this disclosure can be easily controlled and will not be easily damaged.

[0099] In this disclosure, the sum of the maximum axial heights of the first sloping gradually tapered protrusion 351B1 and the second sloping gradually tapered protrusion 352B determines the maximum axial separation distance of the first clutch component 351B and the second clutch component 352. That is, the distance between the first clutch component 351B and the second clutch component 352 should not be too large; otherwise, the brush roller unit 310 may have a longer preparation time during lifting and lowering, meaning the entire mobile cleaner will not react quickly enough.

[0100] The first sloping, gradually tapered protrusion 351B1 and the second sloping, gradually tapered protrusion 352B extend in the circumferential direction to allow the first clutch component 351B and the second clutch component 352 to rotate relative to each other. In other words, when the drive unit 320 rotates in the second direction, the first clutch component 351B and the second clutch component 352 can generate relative motion. At this time, the second clutch component 352 can be in a stationary state, which can push the first clutch component 351B to move in a direction away from the second clutch component 352, so that the first clutch component 351B and the second clutch component 352 can disengage as quickly as possible.

[0101] The second clutch component 352 is detachably disposed in the adjustment unit 330. Thus, when the second clutch component 352 of this disclosure is damaged, the component can be quickly replaced.

[0102] Generally speaking, when the drive unit 320 outputs torque in the second direction, the first clutch component 351B and the second clutch component 352 decouple to cut off the power; when the drive unit 320 outputs torque in the first direction, the first clutch component 351B and the second clutch component 352 couple to transmit power.

[0103] The specific structure of the adjustment unit will be described below with reference to the accompanying drawings.

[0104] The adjustment unit 330 disclosed herein can be used in a mobile cleaner that includes a brush roller unit 310. The adjustment unit 330 is used to change the position of the brush roller unit 310 in the vertical direction, so that the brush roller unit 310 can approach or move away from the surface to be cleaned.

[0105] In one specific embodiment, the adjustment unit 330 includes components such as a power input shaft 331, a worm gear 332, a transmission assembly 333, and an eccentric wheel 334.

[0106] The power input shaft 331 is mounted on the brush roller unit 310. For example, the power input shaft 331 is rotatably disposed on the housing portion 311 of the brush roller unit 310. The output end of the power input shaft 331 is configured to be driven so that the entire power input shaft 331 rotates on the brush roller unit 310 about its central axis (rotation axis); specifically, the power input shaft 331 of this disclosure can be driven by the torque transmitted by the clutch device 350 and can rotate relative to the brush roller unit 310.

[0107] The worm gear portion 332 is disposed on the portion other than the input end of the power input shaft 331. In a specific embodiment, the worm gear portion 332 is disposed on the output end of the power input shaft 331.

[0108] The transmission assembly 333 is rotatably disposed on the brush roller unit 310 and is configured to mesh with the worm gear portion 332; the eccentric wheel 334 is connected to the output shaft of the transmission assembly 333, is configured to be fixed relative to the output shaft, and is configured to slidably abut against the chassis assembly 100 of the mobile cleaner when rotating; wherein, during the rotation of the power input shaft 331, the eccentric wheel 334 undergoes a rotational change from 0 to at least 180° to change the lift (height) of the brush roller component 312 relative to the chassis assembly 100 of the mobile cleaner.

[0109] The eccentric wheel 334 includes a rotation axis, which is the same as the rotation axis of the output shaft of the transmission assembly 333, so that the eccentric wheel 334 can rotate synchronously with the output shaft of the transmission assembly 333.

[0110] In a preferred embodiment, the vertical distance between the rotation axis of the eccentric wheel 334 and the outer periphery of the eccentric wheel 334 is between 5 mm and 12 mm. That is, the central axis of the eccentric wheel 334 can be at different distances from different areas of the outer periphery. Thus, when different areas of the outer periphery of the eccentric wheel 334 come into contact with the planar portion 110 of the chassis assembly 100, the axis of the eccentric wheel 334 is at different distances from the planar portion 110 of the chassis assembly 100, thereby making the brush roller component 312 at different distances relative to the surface to be cleaned.

[0111] In this disclosure, the vertical distance between the rotation axis of the eccentric wheel 334 and its outer circumference changes linearly. Therefore, during rotation, the linear change in the outer circumference of the eccentric wheel 334 allows for gradual adjustment of the height of the brush roller component 312. Consequently, the height of the brush roller component 312 does not change abruptly during height adjustment.

[0112] The projection of the eccentric wheel 334 onto a plane perpendicular to the axis of rotation is approximately elliptical. Therefore, one rotation of the eccentric wheel 334 allows the brush roller assembly 312 to complete a cycle from its lowest position to its highest position and back to its lowest position. This allows for convenient control of the height of the brush roller assembly 312 during use of the mobile cleaner. In other words, the eccentric wheel 334 can rotate one full turn, from 0° to 360°.

[0113] In one specific embodiment, at least a first outer peripheral segment 334A and a second outer peripheral segment 334B are defined on the outer periphery of the eccentric wheel 334. The first outer peripheral segment 334A is at the largest distance from the rotation axis, and the second outer peripheral segment 334B is at the smallest distance from the rotation axis. Additionally, at least a third outer peripheral segment 334C is defined on the outer periphery of the eccentric wheel 334. The third outer peripheral segment 334C is located between the first outer peripheral segment 334A and the second outer peripheral segment 334B, and the distance of the third outer peripheral segment 334C from the rotation axis is between the distances of the first outer peripheral segment 334A and the second outer peripheral segment 334B from the rotation axis.

[0114] by Figure 3 In the indicated state, the distance between the eccentric wheel 334 and the planar portion 110 of the chassis assembly 100 is approximately equal to the minimum perpendicular distance between the rotation axis of the eccentric wheel 334 and the outer circumference of the eccentric wheel 334, which is 5 mm. In other words, the second outer circumferential segment 334B is in contact with the planar portion 110. At this point, the brush roller component 312 has its minimum lift (minimum distance) with the surface to be cleaned, and correspondingly, the brush roller component 312 is in a downward cleaning state. In other words, there is maximum positive pressure between the brush roller component 312 and the surface to be cleaned.

[0115] Specifically, the eccentric wheel 334 can be positioned above the planar portion 110 of the chassis assembly 100. In this case, the brush roller unit 310 can be subjected to a downward force by the spring-loaded component. When the normal force between the eccentric wheel 334 and the planar portion 110 can overcome the spring force, the brush roller unit 310 (i.e., the brush roller component 312) will move away from the surface to be cleaned. Conversely, when the eccentric wheel 334 moves to the position of gradually releasing the brush roller unit 310, the brush roller unit 310 will move downward under the action of the spring force to contact the surface to be cleaned, and may even make pressure contact with the surface to be cleaned.

[0116] according to Figure 3 As shown, when the eccentric wheel 334 rotates, different areas of its outer periphery will make pressure contact with the planar portion 110. When the eccentric wheel 334 moves to the point where the first outer periphery section 334A contacts the planar portion 110, the brush roller unit 310 (i.e., the brush roller component 312) will move to the maximum position in the upward direction (i.e., the maximum lift). At this time, the brush roller component 312 will have the maximum lift (i.e., the maximum distance) with the surface to be cleaned, and correspondingly, the brush roller component 312 is in a suspended state.

[0117] When the eccentric wheel 334 moves to the point where the third outer peripheral section 334C contacts the flat portion 110, the brush roller unit 310 (i.e., the brush roller component 312) moves to the position corresponding to the middle stroke (i.e., the middle position) between the maximum stroke and the minimum stroke. At this time, the brush roller component 312 can contact the surface to be cleaned and clean the surface to be cleaned.

[0118] When the brush roller unit 310 is in the middle lift position, there is a first positive pressure between the brush roller component 312 and the surface to be cleaned; when the brush roller unit 310 is in the minimum lift position, there is a second positive pressure between the brush roller component 312 and the surface to be cleaned, and the first positive pressure is less than the second positive pressure.

[0119] In other words, the brush roller unit 310 at the middle lift can perform normal cleaning operations on the surface to be cleaned, while the brush roller unit 310 at the minimum lift can perform pressure cleaning operations on the surface to be cleaned, thereby removing stubborn stains on the surface to be cleaned through pressure cleaning operations.

[0120] Considering that the brush roller component 312 is a roller brush, when the brush roller unit 310 is in the middle lift position, there is a first interference depth between the brush roller component 312 and the surface to be cleaned; when the brush roller unit 310 is in the minimum lift position, there is a second interference depth between the brush roller component 312 and the surface to be cleaned, and the first interference depth is less than the second interference depth.

[0121] When either the first outer peripheral section 334A or the second outer peripheral section 334B is configured to abut against the chassis assembly 100 of the mobile cleaner, the eccentric wheel 334 can trigger the controller of the mobile cleaner to stop driving the input end of the power input shaft 331. Thus, in use, each action of the adjustment unit 330 of the mobile cleaner of this disclosure can only change the position of the brush roller component 312, without causing a cyclical change in the position of the brush roller component 312.

[0122] Specifically, when the brush roller component 312 is at its lowest position and needs to be raised, the eccentric wheel 334 rotates, and the first outer peripheral section 334A will abut against the flat part of the chassis assembly 100. At this time, the drive device 320 will stop providing torque to the adjustment unit 330, and the brush roller component 312 will be able to be stably maintained at the highest lift.

[0123] Furthermore, when the brush roller component 312 is at its highest lift, it cannot contact the surface to be cleaned. In this case, even if the brush roller component 312 rotates, it cannot clean the surface. Therefore, in this situation, the power supply to the drive unit 320 can be disconnected, i.e., the drive unit 320 can be controlled to stop rotating.

[0124] In another scenario, when the brush roller assembly 312 is at its highest position and needs to be lowered, the eccentric wheel 334A rotates, at which point the second outer peripheral section 334B or the third outer peripheral section 334C will abut against the planar portion of the chassis assembly 100. At this point, the drive device 320 stops providing torque to the adjustment unit 330, thus keeping the brush roller assembly 312 stably in the middle or minimum position.

[0125] That is, when the third outer peripheral section 334C is configured to abut against the chassis assembly 100 of the mobile cleaner, it triggers the controller of the mobile cleaner to stop the drive to the input end of the power input shaft 331.

[0126] When the brush roller component 312 is in the middle or minimum position, it can contact the surface to be cleaned. At this time, the rotation direction of the drive device 320 changes, that is, it switches from rotating along the first direction to rotating along the second direction. Thus, the power output to the adjustment unit 330 can be disconnected, while the power output to the brush roller component 312 can be maintained, so that the brush roller component 312 can rotate continuously.

[0127] At least one of the first outer peripheral segment 334A and the second outer peripheral segment 334B includes a planar or near-planar curved surface. In a preferred embodiment, the third outer peripheral segment 334C is a planar or near-planar curved surface. Thus, when the first outer peripheral segment 334A, the second outer peripheral segment 334B, or the third outer peripheral segment 334C abuts against the planar portion 110, the eccentric wheel 334 is prevented from being driven to rotate by the force exerted on the eccentric wheel 334 by the planar portion 110 through the cooperation of the planar surfaces. As a result, the brush roller component 312 can be stably maintained at the maximum lift, minimum lift, or intermediate lift.

[0128] In another embodiment, the brush roller component 312 can also be stably maintained at its maximum lift, minimum lift, or intermediate lift through the self-locking of the worm gear portion 332. In other words, the connection between the worm gear portion 332 and the transmission assembly 333 is a self-locking connection, meaning that the worm gear portion 332 can drive the transmission assembly 333 to rotate, but the transmission assembly 333 cannot drive the worm gear portion 332 to rotate in the opposite direction.

[0129] In one specific embodiment, the transmission assembly 333 includes a first transmission gear 333A and a second transmission gear 333B. The first transmission gear 333A is configured to mesh with the worm gear portion 332, the second transmission gear 333B is connected to the first transmission gear 333A, and the eccentric wheel 334 is fixedly connected to the second transmission gear 333B.

[0130] The first transmission gear 333A includes an upper transmission gear and a lower transmission gear that are coaxially and integrally supported. The outer diameter of the upper transmission gear is larger than that of the lower transmission gear, and correspondingly, the number of teeth of the upper transmission gear is also larger than that of the lower transmission gear. The upper transmission gear is configured to mesh with the worm gear portion 332, and the lower transmission gear is configured to mesh with the second transmission gear 333B.

[0131] The outer diameter of the upper transmission gear is basically the same as the outer diameter of the second transmission gear 333B. Correspondingly, the number of teeth of the upper transmission gear is also basically the same as the number of teeth of the second transmission gear 333B. Thus, the upper transmission gear and the second transmission gear 333B can be arranged in a partially overlapping manner. Accordingly, the transmission component 333 of this disclosure only needs to occupy a small space to complete the arrangement.

[0132] Figure 14 This is a flowchart of a method for adjusting the height of the brush roller component of a mobile cleaner according to one embodiment of the present disclosure.

[0133] like Figure 14 As shown, the height adjustment method for the brush roller assembly of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the height adjustment method for the brush roller assembly of the mobile cleaner disclosed herein can adjust the height of the brush roller assembly of the aforementioned mobile cleaner.

[0134] Specifically, the height adjustment method of the brush roller component 312 of the mobile cleaner disclosed herein includes: S1010, inputting torque to the input end of the power input shaft 331 to drive the power input shaft 331 to rotate around its rotation axis; S1020, receiving and transmitting torque to the output shaft of the transmission component 333 through the meshing of the worm gear 332 and the transmission component 333; S1030, driving the eccentric wheel 334 to rotate through the output shaft while keeping the outer circumference of the eccentric wheel 334 slidingly against the chassis assembly 100 of the mobile cleaner; S1040, causing the eccentric wheel 334 to rotate from 0 to at least 180° to change the distance of the output shaft relative to the chassis assembly 100 of the mobile cleaner, thereby adjusting the distance between the brush roller component 312 of the brush roller unit 310 and the surface to be cleaned.

[0135] Therefore, the rotation of the eccentric wheel 334 allows the brush roller component 312 to switch positions. Specifically, when the brush roller component 312 is at its minimum lift, the rotation of the eccentric wheel 334 raises the brush roller component 312. When the brush roller component 312 is at its maximum lift, the rotation of the eccentric wheel 334 lowers the brush roller component 312.

[0136] Moreover, the mobile cleaner disclosed herein only requires one drive device 320 to drive the brush roller component 312 to rotate and lift the brush roller component 312. Thus, compared with the prior art, the mobile cleaner disclosed herein has fewer drive devices 320, which not only saves the manufacturing cost of the mobile cleaner, but also facilitates the layout of various components.

[0137] In this disclosure, the height adjustment method for the brush roller component 312 of the portable cleaner further includes controlling the height variation of the brush roller component 312 by setting a vertical distance range between 5 mm and 12 mm. That is, the brush roller component 312 of this disclosure has a stroke of approximately 7 mm. In other words, the brush roller component 312 can move to the position corresponding to the maximum stroke by moving upwards approximately 7 mm from its minimum stroke.

[0138] In some embodiments, the height adjustment method of the brush roller component 312 of the mobile cleaner further includes: using linear change to achieve gradual adjustment of the height of the brush roller component 312, so that the position of the brush roller component 312 does not change abruptly during the height change process.

[0139] In some embodiments, the height adjustment method for the brush roller component 312 of the mobile cleaner further includes: guiding the eccentric wheel 334 to slide against the chassis assembly 100 of the mobile cleaner through an elliptical projection to smoothly change the vertical distance.

[0140] In some embodiments, the height adjustment method for the brush roller component 312 of the mobile cleaner further includes: providing a maximum vertical distance through a first outer peripheral section 334A to achieve the highest height of the brush roller unit 310; and providing a minimum vertical distance through a second outer peripheral section 334B to achieve the lowest height of the brush roller component 312.

[0141] In some embodiments, the height adjustment method of the brush roller component 312 of the mobile cleaner further includes: triggering the controller of the mobile cleaner to stop the torque input to the input end of the power input shaft 331 when the first outer peripheral section 334A or the second outer peripheral section 334B abuts against the chassis assembly 100 of the mobile cleaner.

[0142] In some embodiments, the height adjustment method for the brush roller component 312 of the mobile cleaner further includes controlling the contact stability between the eccentric wheel 334 and the chassis assembly 100 of the mobile cleaner by means of a planar or near-planar curved surface.

[0143] In some embodiments, the height adjustment method for the brush roller component 312 of the mobile cleaner further includes providing a distance between the distance of the first outer peripheral section 334A and the distance of the second outer peripheral section 334B through the third outer peripheral section 334C to achieve an intermediate height of the brush roller component 312.

[0144] In some embodiments, the height adjustment method of the brush roller component 312 of the mobile cleaner further includes: when the third outer peripheral section 334C abuts against the chassis assembly 100 of the mobile cleaner, triggering the controller of the mobile cleaner to stop the torque input to the input end of the power input shaft 331. At this time, the brush roller component 312 of the mobile cleaner of this disclosure will be in normal cleaning mode.

[0145] In some embodiments, the height adjustment method of the brush roller component 312 of the mobile cleaner further includes: optimizing the maintenance of the intermediate height by means of a planar or near-planar curved surface, thereby enabling the brush roller component 312 of the mobile cleaner of the present disclosure to be stably maintained at the intermediate height.

[0146] In some embodiments, the height adjustment method of the brush roller component 312 of the mobile cleaner further includes: receiving torque through the meshing of the first transmission gear 333A and the worm gear 332; and transmitting torque to the eccentric wheel 334 through the fixed connection of the second transmission gear 333B and the eccentric wheel 334.

[0147] Figure 15 This is a flowchart of the operation method of the gear unit of a mobile cleaner according to one embodiment of the present disclosure.

[0148] like Figure 15 As shown, the operation method of the gear unit of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the gear unit of the mobile cleaner disclosed herein can adjust the height of the brush roller component of the aforementioned mobile cleaner.

[0149] The operation method of the gear unit 340 of the portable cleaner includes: S2010, outputting torque from the drive device 320 in a selected rotation direction; S2020, continuously transmitting torque to the brush roller component 312 through the first gear train, thereby rotating the brush roller component 312; S2030, conditionally transmitting torque to the adjustment unit 330 through the second gear train by adjusting the clutch device 350 in response to the selected rotation direction of the drive device 320; S2040, adjusting the distance between the brush roller component 312 and the surface through the adjustment unit 330, thereby adapting the portable cleaner to different cleaning conditions.

[0150] The mobile cleaner disclosed herein only requires one drive device 320 to drive the brush roller component 312 to rotate and lift. Therefore, compared with the prior art, the mobile cleaner disclosed herein has fewer drive devices 320, which not only saves the manufacturing cost of the mobile cleaner, but also facilitates the layout of various components.

[0151] In some embodiments, the operation method of the gear unit 340 of the mobile cleaner further includes: adjusting the clutch device 350 by switching the rotation direction of the drive device 320 to activate or deactivate the adjustment unit 330 while keeping the brush roller component 312 rotating. Thus, the disclosed mobile cleaner only requires one drive device 320 in conjunction with the clutch device 350 to realize the rotation drive and lifting adjustment of the brush roller component 312.

[0152] In some embodiments, the operation of the gear unit 340 of the mobile cleaner further includes: dividing the torque from the drive unit 320 at the intermediate gear 344, supplying the torque in parallel to the brush roller component 312 for rotation of the brush roller component 312, and supplying the torque to the second gear train for selectively activating the adjustment unit 330.

[0153] In some embodiments, the operation of the gear unit 340 of the mobile cleaner further includes: directing torque from the intermediate gear 344 to the first gear 341, the second gear 342 and the third gear 343 to drive the brush roller component 312 to rotate and conditionally activate the adjustment unit 330.

[0154] In some embodiments, the operation of the gear unit 340 of the portable cleaner further includes modulating the torque flow from the intermediate gear 344 to the third gear 343 and / or the adjustment unit 330 via the clutch device 350 to activate or deactivate the adjustment unit 330 while maintaining the rotation of the brush roller component 312. That is, as long as the drive device 320 is in operation, i.e., as long as the drive device 320 rotates, the brush roller component 312 of this disclosure is always rotating and capable of cleaning the surface to be cleaned, regardless of the rotation direction of the brush roller component 312. However, the height of the brush roller component 312 can only be adjusted when the drive device 320 rotates in the first direction.

[0155] In some embodiments, the operation method of the gear unit 340 of the portable cleaner further includes: axially coupling or decoupling components of the clutch device 350 based on the rotation direction of the drive device 320 to open or close the torque through the second gear system. Specifically, in this disclosure, the operation method of the gear unit 340 of the portable cleaner further includes: rotating the upper disc gear 351A to drive the first clutch component 351B, and selectively engaging with the second clutch component 352 to control the downstream torque transmission.

[0156] In this disclosure, when the drive unit 320 outputs torque in a second direction, the first clutch component 351B and the second clutch component 352 are decoupled to interrupt the torque, and when the drive unit 320 outputs torque in a first direction, they are coupled to transmit the torque.

[0157] Figure 16This is a flowchart of the operation method of the gear unit of a mobile cleaner according to another embodiment of the present disclosure.

[0158] like Figure 16 As shown, the operation method of the gear unit of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the gear unit of the mobile cleaner disclosed herein can adjust the height of the brush roller component of the aforementioned mobile cleaner.

[0159] The operation method of the gear unit 340 of the mobile cleaner includes: S3010, outputting torque from the drive unit 320 in a selected rotation direction; S3020, transmitting the torque of the drive unit 320 to the brush roller component 312 through the first gear train and keeping the brush roller component 312 rotating; S3030, transmitting torque to the second gear train through the intermediate gear 344 of the first gear train; S3040, triggering the clutch device 350 based on the selected rotation direction, connecting the second gear train and the adjustment unit 330 through the clutch device 350, and transmitting torque to the adjustment unit 330; S3050, maintaining the selected rotation direction, causing the adjustment unit 330 to modify the positioning of the brush roller unit 310, while maintaining the rotation of the brush roller component 312.

[0160] Specifically, modifying the positioning of the brush roller by adjusting the adjustment unit means adjusting the height of the brush roller unit 310, i.e., adjusting the height of the brush roller component 310, through the adjustment unit 330.

[0161] In some embodiments, the operation method of the gear unit 340 of the mobile cleaner further includes: after the positioning of the brush roller unit 310 is modified, reversing the rotation direction selected by the drive device 320, triggering the clutch device 350, and disengaging the second gear train and the adjustment unit 330 through the clutch device 350 to lock the adjusted positioning, while maintaining the reverse rotation of the brush roller component 312.

[0162] Figure 17 This is a flowchart of the operation method of the adjustment unit of a portable cleaner according to one embodiment of the present disclosure.

[0163] like Figure 17 As shown, the operation method of the adjustment unit of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the adjustment unit of the mobile cleaner disclosed herein can adjust the height of the brush roller component of the aforementioned mobile cleaner.

[0164] Specifically, the operation method of the adjustment unit 330 of the mobile cleaner includes: S4010, the drive unit 320 supplies torque to the clutch device 350; S4020, selectively operating the clutch device 350 in response to the rotation direction of the drive unit 320 to control the torque transmission to the input end of the power input shaft 331; S4030, when the clutch device 350 is in the engaged configuration, using the transmitted torque to rotate the power input shaft 331 about its rotation axis; S4040, converting the rotation of the power input shaft 331 into a vertical displacement of the brush roller unit 310 of the mobile cleaner relative to the chassis assembly 100 of the mobile cleaner, thereby adjusting the lift of the brush roller unit 310 in a direction perpendicular to the surface to be cleaned.

[0165] The mobile cleaner disclosed herein only requires one drive device 320 to drive the brush roller component 312 to rotate and lift. Therefore, compared with the prior art, the mobile cleaner disclosed herein has fewer drive devices 320, which not only saves the manufacturing cost of the mobile cleaner, but also facilitates the layout of various components.

[0166] In some embodiments, the operation method of the adjustment unit of the mobile cleaner further includes operating the clutch device 350 between a connected configuration and a disconnected configuration by changing the rotation direction of the drive device 320. Specifically, a power output shaft is provided on the second clutch component 352, and the power output shaft is coaxially arranged with the power input shaft 331. The power output shaft can be connected to the power input shaft 331 via a coupling. Moreover, the power input shaft can slide axially relative to the coupling, thereby allowing the second clutch component 352 to approach or move away from the first clutch component 351B.

[0167] In some embodiments, the operation method of the adjustment unit 330 of the mobile cleaner includes controlling locking and unlocking by guiding the rotation direction of the drive device 320. Specifically, when the first clutch component 351B and the second clutch component 352 rotate coaxially relative to each other in a first direction (i.e., when the drive device 320 rotates in the first direction), they lock together to axially couple the first clutch component 351B and the second clutch component 352 together; or when they rotate relative to each other in a second direction (i.e., when the drive device 320 rotates in the second direction), they unlock together to axially separate the first clutch component 351B and the second clutch component 352 to decouple them.

[0168] In some embodiments, the operation method of the adjustment unit 330 of the portable cleaner further includes: transmitting torque to the adjustment unit 330 through the gear unit 340. Specifically, the torque can be transmitted to the adjustment unit 330 through a first gear train (partial gears) and a second gear train.

[0169] In this disclosure, the operation method of the adjustment unit of the mobile cleaner further includes: engaging the worm gear 332 with the transmission assembly 333; abutting the outer periphery of the eccentric wheel 334 against the chassis assembly 100 of the mobile cleaner; transmitting power to rotate the eccentric wheel 334; and changing the relative position between the rotation axis of the eccentric wheel 334 and the chassis assembly 100 of the mobile cleaner by changing the eccentricity of the eccentric wheel 334, thereby changing the distance of the brush roller assembly 312 relative to the surface to be cleaned, so as to realize the height adjustment of the brush roller assembly 312.

[0170] The operation method of the adjustment unit of the mobile cleaner further includes: selectively positioning the first outer peripheral section 334A or the second outer peripheral section 334B so that they respectively abut against the chassis assembly 100 to reach the corresponding maximum lift position and minimum lift position, so that at the maximum lift position, the brush roller component 312 is away from the surface to be cleaned, and at the minimum lift position, the brush roller component 312 is in pressure contact with the surface to be cleaned to remove stubborn stains on the surface to be cleaned.

[0171] In some embodiments, the method of operating the adjustment unit of the mobile cleaner further includes: selectively positioning the third outer peripheral segment 334C to abut against the chassis assembly 100 to reach an intermediate lift position, so that at the intermediate lift position, the brush roller component 312 can make slight contact with the surface to be cleaned to clean the surface to be cleaned.

[0172] In this disclosure, when the eccentric wheel 334 reaches a preset position, the rotation direction of the drive device 320 is switched so that the clutch device 350 is switched to the disengaged configuration, thereby locking the current lift. Thus, the distance between the brush roller component 312 and the surface to be cleaned is adjustable and can be continuously varied, allowing the brush roller component 312 to adapt to surfaces of different materials and to surfaces with varying degrees of dirt.

[0173] Taking a tiled floor as an example, the brush roller component 312 can be positioned in the middle. Taking a wooden floor as an example, the brush roller component 312 can be positioned between the middle and minimum positions. Based on this, when there is less dirt on the surface to be cleaned, the distance between the brush roller component 312 and the surface can be appropriately increased to reduce the driving force of the brush roller component 312, save energy, and improve the battery life of the portable cleaner. On the other hand, when there is more dirt on the surface to be cleaned, or when there are stubborn stains, the distance between the brush roller component 312 and the surface can be appropriately reduced to increase the friction between the brush roller component 312 and the surface, thereby improving the cleaning effect.

[0174] like Figure 4 and Figure 5As shown, the mobile cleaner of this disclosure may include a trigger 120 and a control unit (not shown in the figure), wherein the trigger 120 is disposed on the chassis assembly 100 and at least a portion of the trigger 120 protrudes from the planar portion 110 of the chassis assembly 100, thereby enabling the eccentric wheel 334 to make pressure contact with the trigger 120 and trigger the trigger 120.

[0175] In one specific embodiment, the trigger 120 is formed as a trigger switch. Since the eccentric wheel 334 will contact different positions of the planar portion 110 during rotation, the eccentric wheel 334 can trigger multiple triggers 120 when it rotates one revolution. Thus, the position of the eccentric wheel 334 can be obtained through the trigger signals of these triggers 120 (that is, the signal indicating whether the trigger 120 is triggered), and further, the position of the brush roller component 312 can also be obtained.

[0176] The trigger 120 can be connected to a control unit, which can be a microcontroller such as a single-chip microcomputer or a DSP. Therefore, the control unit of this disclosure can control the operation of the drive device 320 based on the trigger signal of the trigger 120. In this case, the control unit is connected to the drive device 320 via a motor driver.

[0177] Specifically, the operation method of the adjustment unit of the mobile cleaner further includes activating the trigger 120 at at least one position during the rotation of the eccentric wheel 334 from 0 degrees to 180 degrees, sending a signal to the control unit, and the drive unit 320 controlling the rotation direction according to the signal to switch the clutch device 350 between the engaged and disengaged configurations. In other words, when the eccentric wheel 334 is rotating, if the eccentric wheel 334 triggers one of the trigger switches, the control unit can control the drive unit 320 to reverse (i.e., switch from rotation in the second direction to rotation in the first direction), at which time the eccentric wheel 334 will be restricted to the current position, and correspondingly, the brush roller component 312 will also be restricted to the current position.

[0178] In one specific embodiment, there can be two triggers 120. One of the two triggers 120 can be triggered when the first outer peripheral segment 334A or the second outer peripheral segment 334B of the eccentric wheel 334 engages with the planar portion 110; the other trigger 120 can be triggered when the third outer peripheral segment 334C of the eccentric wheel 334 engages with the planar portion 110. Thus, the position of the eccentric wheel 334 can be known through the trigger signals of the two triggers 120.

[0179] In other words, at least one position includes the maximum lift position and the minimum lift position corresponding to the brush roller unit 310 relative to the chassis assembly 100; the method of operating the adjustment unit of the mobile cleaner also includes that, at the maximum lift and minimum lift positions, the drive unit 320 rotates in the opposite direction, causing the clutch unit 350 to switch to the disengaged configuration.

[0180] In another implementation, at least one position includes an intermediate lift position, and the method of operating the adjustment unit of the mobile cleaner further includes, in the intermediate lift position, the drive unit 320 rotating in the reverse direction to switch the clutch unit 350 to the disengaged position.

[0181] Therefore, when the mobile cleaner of this disclosure is in use, its brush roller component 312 can be controlled and positioned in multiple locations, thereby enabling the brush roller component 312 to perform cleaning operations with different intensities on the surface to be cleaned, thus expanding the application scenarios of the mobile cleaner of this disclosure.

[0182] In one embodiment of this disclosure, when the brush roller unit 310 is at its maximum lift, the brush roller component 312 of the brush roller unit 310 is disengaged from the surface to be cleaned. Conversely, when the brush roller unit 310 is at its minimum lift or intermediate lift, the brush roller component 312 of the brush roller unit 310 is in contact with the surface to be cleaned.

[0183] Figure 18 This is a flowchart of an operation method for a brush roller assembly of a mobile cleaner according to one embodiment of the present disclosure.

[0184] like Figure 18 As shown, the operation method of the brush roller assembly of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the brush roller assembly of the mobile cleaner disclosed herein can adjust the height of the brush roller component of the aforementioned mobile cleaner.

[0185] The operation method of the brush roller assembly 300 of the mobile cleaner includes: S5010, driving the drive device 320 to output torque in a first direction or a second direction; S5020, transmitting torque to the brush roller component 312 through the gear unit 340 to rotate the brush roller component 312; S5030, selectively transmitting torque to the adjustment unit 330 through the clutch device 350, wherein when the drive device 320 outputs torque in the first direction, the torque transmission from the drive device 320 to the eccentric wheel 334 is maintained; when the drive device 320 outputs torque in the second direction, the torque transmission from the drive device 320 to the eccentric wheel 334 is cut off; S5040, adjusting the height of the brush roller component 312 relative to the chassis assembly 100 of the mobile cleaner by rotating the eccentric wheel 334, so that the distance between the brush roller component 312 and the surface to be cleaned can be switched between at least two distance states.

[0186] The at least two distance states may include the brush roller component 312 being in a state of maximum lift and a state of minimum lift, at which point the brush roller component 312 has a maximum distance and a minimum distance between it and the surface to be cleaned. Those skilled in the art should understand that the minimum distance does not mean that the brush roller component 312 is still suspended in the air, but rather refers to the maximum position of the brush roller component 312 when it moves downwards, at which point interference will occur between the brush roller component 312 and the surface to be cleaned.

[0187] In some embodiments, the operation method of the brush roller assembly 300 of the mobile cleaner further includes: transmitting the torque of the drive device 320 to the brush roller component 312 through a first gear train to actuate the brush roller component 312 to rotate; and selectively transmitting the torque of the drive device 320 to the adjustment unit 330 through a second gear train.

[0188] In a preferred embodiment, the operation method of the brush roller assembly 300 of the mobile cleaner further includes: transmitting the torque of the drive device 320 to the brush roller component 312 and the adjustment unit 330 respectively through the intermediate gear 344. Thus, by setting the intermediate gear 344, the present disclosure enables some gears in the first gear system to be formed as shared gears, thereby making the gear unit of the present disclosure have a smaller number of gears.

[0189] In this disclosure, the operation method of the brush roller assembly 300 of the mobile cleaner further includes: driving the axial clutch device 350 to axially couple or disengage according to the torque output in a first or second direction of the drive device 320, so as to connect or disconnect the torque between the drive device 320 and the adjustment unit 330. For example, the mobile cleaner may be provided with a clutch device 350, which controls the torque transmission to the adjustment unit 330 downstream of the intermediate gear 344. Alternatively, the clutch device 350 controls the torque transmission to the adjustment unit 330 downstream of the second gear train.

[0190] In other words, the clutch device 350 of this disclosure can have different installation positions. The installation position is only required to be not located in the first gear train.

[0191] In one specific embodiment, the clutch device 350 is located in the second gear train. In this case, the operation of the brush roller assembly 300 of the mobile cleaner further includes: when the drive device 320 outputs torque in the second direction, disengaging the transmission of the second gear train via the clutch device 350 to cut off power from the drive device 320 to the adjustment unit 330; and when the drive device 320 outputs torque in the first direction, restoring the transmission of the second gear train via the clutch device 350 to transmit power from the drive device 320 to the adjustment unit 330.

[0192] In some embodiments, the operation method of the brush roller assembly 300 of the mobile cleaner further includes: directly or indirectly meshing the intermediate gear 344 with the upper disc gear 351A to drive the upper disc gear 351A to rotate; connecting the second clutch component 352 to the end of the power input shaft 331 of the adjustment unit 330 to drive the power input shaft 331 to rotate; and coaxially rotating the first clutch component 351B and the second clutch component 352 to cut off or restore the drive to the power input shaft 331.

[0193] In some embodiments, the operation of the brush roller assembly 300 of the mobile cleaner further includes: when the first clutch component 351B and the second clutch component 352 rotate coaxially relative to each other in a first direction, locking the first sloped gradient protrusion 351B1 and the second sloped gradient protrusion 352B together, thus axially coupling the first clutch component 351B and the second clutch component 352 together; when rotating relative to each other in a second direction, guiding the first sloped gradient protrusion 351B1 and the second sloped gradient protrusion 352B to unlock each other, thus axially separating the first clutch component 351B and the second clutch component 352 to decouple them.

[0194] In some embodiments, the operation method of the brush roller assembly 300 of the mobile cleaner further includes: transmitting torque to the input end of the power input shaft 331 to cause the power input shaft 331 to rotate; maintaining the worm gear 332 in engagement with the transmission assembly 333, and transmitting torque to the eccentric wheel 334 through the meshing transmission of the worm gear 332 and the transmission assembly 333, causing the eccentric wheel 334 to rotate about its rotation axis; the output shaft of the transmission assembly 333 drives the eccentric wheel 334 to rotate from 0 to 180°; during the rotation of the eccentric wheel 334, the eccentric wheel 334 slides against the chassis assembly 100 of the mobile cleaner to change the distance between the rotation axis of the eccentric wheel 334 and the chassis assembly 100 of the mobile cleaner.

[0195] In some embodiments, the operation of the brush roller assembly 300 of the mobile cleaner further includes: providing a maximum distance from the axis of rotation of the eccentric wheel 334 via a first outer peripheral section 334A; and providing a minimum distance from the axis of rotation of the eccentric wheel 334 via a second outer peripheral section 334B.

[0196] In some embodiments, when the first outer peripheral segment 334A or the second outer peripheral segment 334B abuts against the chassis assembly 100 of the mobile cleaner, the trigger of the mobile cleaner is triggered, and the drive device 320 is controlled to switch the output direction of torque according to the trigger signal of the trigger.

[0197] Meanwhile, the operation of the brush roller assembly 300 of the mobile cleaner also includes providing an intermediate distance between the maximum and minimum distance via the third outer peripheral section 334C. Specifically, when the third outer peripheral section 334C abuts against the chassis assembly 100 of the mobile cleaner, the trigger of the mobile cleaner is activated, and the drive unit 320 is controlled to switch the output direction of torque according to the trigger signal of the trigger.

[0198] The operation method of the brush roller assembly 300 of the mobile cleaner disclosed herein further includes: engaging the first transmission gear 333A with the worm gear 332; and coaxially fixing the second transmission gear 333B with the eccentric wheel 334. Thus, the mobile cleaner of this disclosure can further reduce speed and increase torque by setting the first transmission gear 333A and the second transmission gear 333B, thereby enabling a smaller power motor to achieve the lifting and lowering of the brush roller assembly 312.

[0199] In this disclosure, the rotational position of the eccentric wheel 334 is monitored during its rotation, and torque transmission is automatically cut off when it reaches a predetermined rotational position. In one embodiment, the position of the eccentric wheel 334 can be detected by the aforementioned trigger. However, since the trigger can only detect a portion of the position of the eccentric wheel 334, the mobile cleaner of this disclosure can also detect the position of the eccentric wheel 334 by components such as an encoder, thereby accurately knowing the position of the eccentric wheel. Accordingly, based on the position of the eccentric wheel, the rotation direction of the drive device 320 is controlled so that the eccentric wheel 334 can remain at its current position, and correspondingly, the brush roller component 312 can also remain at its current position.

[0200] After the clutch 350 disengages torque transmission, the current rotational position of the eccentric wheel 334 is maintained. In a preferred embodiment, the eccentric wheel 334 can be kept in its current position by self-locking between the worm gear 332 and the transmission assembly 333.

[0201] Accordingly, during the rotation of the eccentric wheel 334, the distance between the rotation axis of the eccentric wheel 334 and the chassis assembly 100 of the mobile cleaner can be dynamically adjusted. Furthermore, the rotational position can be determined by the first outer peripheral segment 334A or the second outer peripheral segment 334B located on the outer periphery of the eccentric wheel 334.

[0202] In some embodiments, the operation of the brush roller assembly 300 of the mobile cleaner further includes controlling the timing of axial coupling or disengagement of the clutch device 350 by the relative rotation of the first sloped gradient protrusion 351B1 and the second sloped gradient protrusion 352B. Thus, the clutch device 350 of this disclosure can be automatically engaged or disengaged simply by controlling the change in the rotation direction of the drive device 320.

[0203] Figure 19 This is a flowchart of an operation method for a portable cleaner according to one embodiment of the present disclosure.

[0204] like Figure 19 As shown, the operation method of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the mobile cleaner disclosed herein allows for adjustment of the height of the brush roller component of the aforementioned mobile cleaner.

[0205] The operation method of the mobile cleaner disclosed herein includes: S6010, controlling the drive device 320 to output torque in a first direction or a second direction; S6020, transmitting torque to the brush roller component 312 via the gear unit 340 to cause the brush roller component 312 to rotate and clean the surface to be cleaned; S6030, responding to the torque in the first direction of the drive device 320, selectively transmitting torque to the adjustment unit 330 via the gear unit 340 to activate the adjustment unit 330; S6040, using the activated adjustment unit 330 to adjust the distance between the brush roller component 310 and the surface to be cleaned, thereby adapting to different cleaning conditions.

[0206] The ability to adapt to different cleaning conditions includes at least the following: the brush roller unit 310 does not contact the surface to be cleaned, so as to pass through the carpet surface; or the brush roller unit 310 contacts the surface to be cleaned with a first pressure to clean the tile surface; or the brush roller unit 310 contacts the surface to be cleaned with a second pressure to clean the wood floor surface, etc., wherein the first pressure is less than the second pressure.

[0207] In some embodiments, the operation method of the mobile cleaner further includes transmitting the torque of the drive unit 320 to the brush roller component 312 via a first gear train, and transmitting the torque of the drive unit 320 to the adjustment unit 330 via a second gear train.

[0208] In some embodiments, the operation method of the mobile cleaner further includes cutting off the power from the drive device 320 to the adjustment unit 330 via the clutch device 350 when the drive device 320 outputs a second directional torque, and restoring the power transmission from the drive device 320 to the adjustment unit 330 via the clutch device 350 when the drive device 320 outputs a first directional torque.

[0209] In some embodiments, the operation of the mobile cleaner further includes transmitting the torque of the drive unit 320 to the brush roller component 312 and the adjustment unit 330 via the intermediate gear 344.

[0210] In some embodiments, the operation method of the portable cleaner further includes: the first gear 341, the second gear 342 and the third gear 343 are all connected to the intermediate gear 344 in a transmission manner; wherein, the first gear 341 is indirectly meshed with the intermediate gear 344, the second gear 342 is directly meshed with the intermediate gear 344, and the third gear 343 is indirectly meshed with the intermediate gear 344.

[0211] In some embodiments, the operation method of the mobile cleaner further includes: transmitting the torque of the drive device 320 to the adjustment unit 330 via the third gear 343, or cutting off the torque transmission from the drive device 320 to the adjustment unit 330.

[0212] In some embodiments, the operation method of the mobile cleaner further includes: when the drive device 320 rotates in a first direction, the first sloped protrusion 351B1 and the second sloped protrusion 352B lock each other to axially couple the first clutch component 351B and the second clutch component 352 together; or, when the drive device 320 rotates in a second direction, the first clutch component 351B and the second clutch component 352 unlock each other to axially separate the first clutch component 351B and the second clutch component 352 to decouple them.

[0213] In some embodiments, the operation method of the mobile cleaner further includes: when the first clutch component 351B and the second clutch component 352 are coupled together, the first engagement surface 351B2 and the second engagement surface 352B2 are in contact with each other; when the first clutch component 351B and the second clutch component 352 are axially separated, the first engagement surface 351B2 and the second engagement surface 352B2 are separated from each other.

[0214] In some embodiments, the method of operating the mobile cleaner further includes: using the sum of their heights to ensure reliable disengagement of the first clutch component 351B and the second clutch component 352.

[0215] In some embodiments, the method of operating the mobile cleaner further includes allowing the first clutch component 351B and the second clutch component 352 of the clutch device 350 to rotate relative to each other to accommodate changes in direction.

[0216] In some embodiments, the operation of the mobile cleaner further includes disassembling the second clutch component 352 to maintain or replace the adjustment unit 330, thereby enabling the mobile cleaner of this disclosure to quickly replace damaged components during use.

[0217] Figure 20 This is a flowchart of an operation method for a portable cleaner according to another embodiment of the present disclosure.

[0218] like Figure 20As shown, the operation method of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the mobile cleaner disclosed herein allows for adjustment of the height of the brush roller component of the aforementioned mobile cleaner.

[0219] The operation method of the mobile cleaner includes: S7010, outputting torque from the drive unit 320 in a first direction or a second direction; S7020, always transmitting torque to the brush roller component 312 to maintain its rotation and cleaning function; S7030, conditionally transmitting torque to the adjustment unit 330 according to the direction of the drive unit 320; and S7040, activating the adjustment unit 330 with the conditionally transmitted torque to adjust the distance between the brush roller component 312 and the surface to be cleaned, thereby optimizing performance without interrupting cleaning.

[0220] In other words, the brush roller component 312 of this disclosure can always rotate during the lifting and lowering process. Therefore, as long as the brush roller component 312 is in contact with the surface to be cleaned, the cleaning operation on the surface to be cleaned can be achieved.

[0221] In one embodiment, the operation of the mobile cleaner further includes switching the state of the clutch 350 when the direction of the drive device 320 changes, so as to enable or disable the activation of the adjustment unit 330.

[0222] For example, when the drive unit 320 rotates in the first direction, it can drive the brush roller component 312 to rotate, and at the same time, it can engage the clutch device 350 to activate the adjustment unit 330, and adjust the position of the brush roller component 312 through the adjustment unit. On the other hand, when the drive unit 320 rotates in the second direction, it can drive the brush roller component 312 to rotate, at which time the clutch device 350 disengages to disable the adjustment unit 330, and the brush roller component 312 will be held in the current position.

[0223] In some embodiments, the operation of the mobile cleaner further includes distributing torque via an intermediate gear 344 to simultaneously support the rotation of the brush roller assembly 312 and the potential activation of the adjustment unit 330.

[0224] In some embodiments, the operation of the mobile cleaner further includes modulating torque using a reduction mechanism to match the needs of the brush roller component 312 and the adjustment unit 330. This reduction mechanism can be implemented via a transmission assembly 333. In other words, the brush roller component 312 requires a high rotational speed during cleaning to agitate dust on the surface to be cleaned. However, when the brush roller component 312 rises or falls, a faster speed is not required. At this time, a first-stage reduction mechanism can be achieved through the cooperation of the worm gear 332 and the transmission assembly 333, and a second-stage reduction mechanism can be achieved through the transmission assembly 333. Thus, the brush roller component 312 of this disclosure can rise or fall at a preset speed.

[0225] In this disclosure, the operation method of the mobile cleaner further includes: after adjusting the distance between the brush roller component 312 and the surface to be cleaned, reversing the direction of the drive device 320 to lock the adjusted distance and continuing cleaning.

[0226] In other words, the drive device 320 first rotates in the first direction. After the position of the brush roller component 312 is adjusted, the drive device 320 switches its rotation direction to the second direction. In addition, when the position of the brush roller component 312 needs to be changed again, the rotation direction of the drive device 320 can be switched back from the second direction to the first direction.

[0227] In some embodiments, the operation of the mobile cleaner further includes coordinating the rotation and adjustment activation of the brush roller component 312 to achieve dynamic adaptation to different surfaces. In other words, since the brush roller component 312 of this disclosure can be controlled at multiple heights, i.e., the distance between the brush roller component 312 and the surface to be cleaned is continuously adjustable, the mobile cleaner of this disclosure can adapt to surfaces of different materials to be cleaned.

[0228] Figure 21 This is a flowchart of an operation method for a portable cleaner according to yet another embodiment of the present disclosure.

[0229] like Figure 21 As shown, the operation method of the mobile cleaner disclosed herein can be implemented based on the aforementioned mobile cleaner. In other words, the operation method of the mobile cleaner disclosed herein allows for adjustment of the height of the brush roller component of the aforementioned mobile cleaner.

[0230] The operation method of the mobile cleaner includes: S8010, inputting the torque of the drive device 320 to the input end of the power input shaft 331 to drive the power input shaft 331 to rotate around its rotation axis; S8010, receiving and transmitting the torque to the output shaft of the transmission assembly 333 through the meshing of the worm gear 332 and the transmission assembly 333; S8010, driving the eccentric wheel 334 to rotate while keeping the outer circumference of the eccentric wheel 334 slidingly against the flat portion 110 on the chassis assembly 100 of the mobile cleaner; S8010, during the rotation of the eccentric wheel 334, causing the eccentric wheel 334 to rotate from 0 to 180° to change the lift of the brush roller assembly 312 relative to the chassis assembly 100 of the mobile cleaner.

[0231] In some embodiments, the operation of the mobile cleaner further includes: causing the outer periphery of the eccentric wheel 334 to slide against the planar portion 110 of the chassis assembly 100, and adjusting the rotational position of the eccentric wheel 334 to change the distance from the rotation axis to the planar portion 110.

[0232] In some embodiments, the method of operating the portable cleaner further includes: adjusting the maximum lift and the minimum lift respectively via the first outer peripheral section 334A and the second outer peripheral section 334B. In some embodiments, the method of operating the portable cleaner further includes: adjusting the intermediate lift via the third outer peripheral section 334C, wherein the intermediate lift is located between the maximum lift and the minimum lift.

[0233] In some embodiments, the operation of the mobile cleaner further includes: at least one position during the rotational change of the eccentric wheel 334 from 0 to 180°, triggering the trigger 120 to send a signal to the control unit to cut off or transmit the torque from the self-driving device 320 to the power input shaft 331.

[0234] In some embodiments, the operation method of the mobile cleaner further includes: when the drive device 320 outputs torque in the second direction, cutting off the torque transmitted from the drive device 320 to the power input shaft 331 through the clutch device 350; and when the drive device 320 outputs torque in the first direction, transmitting the torque from the drive device 320 to the power input shaft 331 through the clutch device 350.

[0235] In some embodiments, the operation of the mobile cleaner further includes: at the maximum or minimum lift position, cutting off the torque from the self-driving device 320 to the power input shaft 331 in response to a signal. In some embodiments, the operation of the mobile cleaner further includes: at an intermediate lift position, cutting off the torque from the self-driving device 320 to the power input shaft 331 in response to a signal. Wherein, when the brush roller component 312 is at its maximum lift, the brush roller component 312 is disengaged from the surface to be cleaned. When the brush roller component 312 is at its minimum lift and / or intermediate lift, the brush roller component 312 is in contact with the surface to be cleaned.

[0236] In some embodiments, the operation of the mobile cleaner further includes: multi-stage adjustment of the lift of the brush roller component 312 by rotating the eccentric wheel 334.

[0237] During the sliding contact between the eccentric wheel 334 and the chassis assembly 100, the outer periphery of the eccentric wheel 334 dynamically adapts to the planar portion 110 of the chassis assembly 100 of the mobile cleaner to ensure the stability of the lift adjustment.

[0238] When the eccentric wheel 334 rotates to the predetermined position, the torque input of the drive unit 320 is automatically switched to lock the current lift, thereby restricting the brush roller component 312 to the preset position.

[0239] Automatically switching the torque input of the drive unit 320 includes cutting off the torque input of the drive unit 320 or stopping the torque output of the drive unit 320. In a preferred embodiment, cutting off the torque input of the drive unit 320 includes cutting off the torque from the drive unit 320 to the power input shaft 331 via the clutch device 350.

[0240] In the description of this specification, the references to terms such as "one embodiment / mode," "some embodiments / modes," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment / mode or example is included in at least one embodiment / mode or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment / mode or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments / modes or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments / modes or examples described in this specification, as well as the features of different embodiments / modes or examples.

[0241] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0242] Those skilled in the art should understand that the above embodiments are merely for illustrating the present disclosure and are not intended to limit the scope of the disclosure. Those skilled in the art can make other changes or modifications based on the above disclosure, and these changes or modifications still fall within the scope of the present disclosure.

Claims

1. An adjustment unit for a mobile cleaner, for adjusting the distance between the brush roller component of the brush roller unit of the mobile cleaner and the surface to be cleaned, characterized in that, include: A power input shaft, which receives torque input and rotates about its axis of rotation; The worm gear portion is disposed on the portion of the power input shaft other than the input end; A transmission assembly, rotatably disposed on the brush roller unit and configured to mesh with the worm gear portion; as well as An eccentric wheel is connected to the output shaft of the transmission assembly, configured to be fixed relative to the output shaft, and arranged to slidably abut against the chassis assembly of the mobile cleaner when rotating; During the rotation of the power input shaft, the eccentric wheel rotates to change the lift of the brush roller component relative to the chassis assembly of the mobile cleaner.

2. The adjustment unit according to claim 1, characterized in that, The eccentric wheel includes a rotation axis, and the rotation axis of the eccentric wheel is the same as the rotation axis of the output shaft of the transmission assembly.

3. The adjustment unit according to claim 2, characterized in that, The vertical distance between the rotation axis of the eccentric wheel and the outer circumference of the eccentric wheel is between 5 mm and 12 mm.

4. The adjustment unit according to claim 2, characterized in that, The vertical distance between the rotation axis of the eccentric wheel and the outer circumference of the eccentric wheel varies linearly.

5. The adjustment unit according to claim 2, characterized in that, The projection of the eccentric wheel onto a plane perpendicular to the axis of rotation is approximately elliptical.

6. The adjustment unit according to claim 2, characterized in that, The outer circumference of the eccentric wheel is defined by at least a first outer circumferential segment and a second outer circumferential segment, wherein the first outer circumferential segment is at the greatest distance from the rotation axis and the second outer circumferential segment is at the smallest distance from the rotation axis.

7. The adjustment unit according to claim 6, characterized in that, When either the first outer peripheral section or the second outer peripheral section is configured to abut against the chassis assembly of the mobile cleaner, the eccentric wheel can trigger the controller of the mobile cleaner to stop driving the input end of the power input shaft.

8. The adjustment unit according to claim 6, characterized in that, At least one of the first outer peripheral segment and the second outer peripheral segment comprises a planar or near-planar curved surface.

9. The adjustment unit according to claim 6, characterized in that, At least one third outer peripheral segment is defined on the outer periphery of the eccentric wheel. The third outer peripheral segment is located between the first outer peripheral segment and the second outer peripheral segment. The distance of the third outer peripheral segment from the rotation axis is between the distance of the first outer peripheral segment from the rotation axis and the distance of the second outer peripheral segment from the rotation axis.

10. The adjustment unit according to claim 9, characterized in that, When the third outer peripheral section is configured to abut against the chassis assembly of the mobile cleaner, it triggers the controller of the mobile cleaner to stop driving the input end of the power input shaft.

11. The adjustment unit according to claim 9, characterized in that, The third outer peripheral segment is a planar or near-planar curved surface.

12. The adjustment unit according to claim 1, characterized in that, The transmission assembly includes a first transmission gear and a second transmission gear. The first transmission gear is configured to mesh with a worm gear, the second transmission gear is connected to the first transmission gear, and the eccentric wheel is fixedly connected to the second transmission gear.

13. The adjustment unit according to claim 12, characterized in that, The first transmission gear includes an upper transmission gear and a lower transmission gear that are coaxially and integrally supported. The outer diameter of the upper transmission gear is larger than the outer diameter of the lower transmission gear. The upper transmission gear is configured to mesh with the worm gear portion, and the lower transmission gear is configured to mesh with the second transmission gear.

14. The adjustment unit according to claim 13, characterized in that, The outer diameter of the upper transmission gear is basically the same as the outer diameter of the second transmission gear.

15. The adjustment unit according to claim 1, characterized in that, The rotational change of the eccentric wheel includes a rotational change of 0 to 180°, or a rotational change of 0 to at least 180°.

16. A portable cleaner, characterized in that, Includes the adjustment unit as described in any one of claims 1-15.

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